Key information

Title: METHOD FOR MANUFACTURING AN INSULATING FOR A BASIN ASSEMBLY
Application number: 20170231
Case type: National
Status: 10.09.2018 Patent meddelt (B1)
Filed: 15.02.2017
Divided to: 20172024 (343102)
Priority: 10.04.2016 NO 20160582
Effective date: 15.02.2017
Publicly available: 11.10.2017
Next annual fee due: 28.02.2027
Applicant: WDF ISOLASJON AS (NO)
Owner: WDF ISOLASJON AS (NO)
Inventor: Werner Krath (NO)
Agent: ACAPO ONSAGERS AS (NO)
Granted: 10.09.2018
Patent number: 342946
Expiry date: 15.02.2037

Abstract and drawing

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content.

The invention concerns a method for manufacturing an insulating element for a basin assembly having at least an outer surface with a conical configuration. The method comprises the following steps -providing a double walled mould by arranging an inner mould structure releasably connected to an outer mould structure to provide an essentially closed mould cavity in between the inner and outer mould structures and providing access to the mould cavity through a filling opening, -filling pourable foam through the filling opening into the mould cavity, -forming the insulating element by curing the foam within the mould cavity while the inner mould structure and outer mould structure are connected in a closed position, -releasing the inner mould structure from the outer mould structure, -removing the inner mould structure from the outer mould structure, wherein the removing occurs with moulded insulating element attached to the inner mould structure, -separating the moulded insulating element from the inner mould structure. The invention also concerns an insulating element for a basin assembly.

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Date

Date	Doc. No.	Process	Case number	In/Out	Journal description	To/from
04.01.2019	10-01	Saksbehandling	20170231	UT	PT Varsel om betaling av første årsavgift (3317) (PT20170231)
11.09.2018	09-01	Saksbehandling	20170231	UT	PT Registreringsbrev Nasjonal Patent (15)
01.08.2018	08-01	Saksbehandling	20170231	UT	PT Meddelelse om patent	ONSAGERS AS
10.04.2018	07-05	Saksbehandling	20170231	INN	Hovedbrev	ONSAGERS AS
10.04.2018	07-04	Saksbehandling	20170231	INN	Beskrivelse merket	ONSAGERS AS
10.04.2018	07-03	Saksbehandling	20170231	INN	Beskrivelse ren	ONSAGERS AS
10.04.2018	07-02	Saksbehandling	20170231	INN	Krav	ONSAGERS AS
10.04.2018	07-01	Saksbehandling	20170231	INN	Korrespondanse (Hovedbrev inn)	ONSAGERS AS
22.03.2018	06-01	Saksbehandling	20170231	UT	Realitet patent	ONSAGERS AS
21.12.2017	05-05	Saksbehandling	20170231	INN	Beskrivelse ME	Onsagers AS
21.12.2017	05-04	Saksbehandling	20170231	INN	Krav	Onsagers AS
21.12.2017	05-03	Saksbehandling	20170231	INN	Beskrivelse	Onsagers AS
21.12.2017	05-02	Saksbehandling	20170231	INN	Hovedbrev	Onsagers AS
21.12.2017	05-01	Saksbehandling	20170231	INN	Korrespondanse (Hovedbrev inn)	Onsagers AS
03.07.2017	04-02	Saksbehandling	20170231	UT	PT report 01:49:39
03.07.2017	04-01	Saksbehandling	20170231	UT	Realitet patent	Onsagers AS
24.04.2017	02-01	Overdragelse av søknad/rettighet	2017/04881	UT	GH Forespørsel	Onsagers AS
11.04.2017	03-06	Saksbehandling	20170231	INN	Overdragelsesdokument	Onsagers AS
11.04.2017	03-05	Saksbehandling	20170231	INN	Overdragelse eller navne- adresseendring	Onsagers AS
11.04.2017	03-04	Saksbehandling	20170231	INN	Erklæring Søkers rett til oppfinnelse	Onsagers AS
11.04.2017	03-03	Saksbehandling	20170231	INN	Hovedbrev	Onsagers AS
11.04.2017	03-02	Saksbehandling	20170231	INN	Fullmakt	Onsagers AS
11.04.2017	03-01	Saksbehandling	20170231	INN	Korrespondanse (Hovedbrev inn)	Onsagers AS
11.04.2017	01-02	Overdragelse av søknad/rettighet	2017/04881	INN	Fullmakt	Onsagers AS
11.04.2017	01-01	Overdragelse av søknad/rettighet	2017/04881	INN	Generell henvendelse	Onsagers AS
21.02.2017	02-01	Saksbehandling	20170231	UT	Formalia 1	Onsagers AS
15.02.2017	01-03	Saksbehandling	20170231	INN	Beskrivelse	Onsagers AS
15.02.2017	01-02	Saksbehandling	20170231	INN	Tegninger	Onsagers AS
15.02.2017	01-01	Saksbehandling	20170231	INN	Søknadsskjema Patent	Onsagers AS

Description, claims and drawings

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content.

Description

TECHNICAL FIELD

The present invention relates to the field of insulation of basins that houses water valves, fittings and equipment for connection of water pipe lines. More specifically, the invention relates to a method for manufacturing an insulating element for a water basin.

A water basin or a catch basin is typically provided as a concrete riser and has the customary arrangement of a man hole for permitting access to the lower structure of the basin and the conduit network, couplings, valves, fittings and equipment as housed in the basin.

The majority of riser elements employed at top part of the concrete riser have a conical configuration, usually produced in an eccentric or concentric shape. In an eccentric design, the top access hole is placed to one side. In a centric or concentric basin, the cone shape tapers uniformly outwards in its height direction from manhole towards the ground.

BACKGROUND

Water pipe lines are usually located at a frost-free depth, and in addition a preventive flow of water is let through the water lines to avoid freezing the waterlines. The water basin is considered the critical point as parts of the water basin are positioned above the frost-free ground and thus is exposed to frost. The configuration of the basin may act as a funnel. When the temperature drops below zero and the funnel effect directs the cold air down to the lower structure there is a risk that the freezing of the equipment housed in the water basin may occur. The problem seems especially explicit in end basins.

During the previous winter seasons the problem of frosting has been even more distinctive as long periods of unusual low temperature have been occurring in parts of the country where such cold periods have been quite uncommon. The cold has resulted in damages to equipment and periods without water being delivered to the consumer.

Based on these reoccurring problems the need for providing frost protection for the waters basins has risen as a current topic that needs to be addressed.

In accordance with prior art several attempts have been made to provide a sufficient solution to the problem. One approach includes letting the water run to maintain the circulation and avoid freezing. In accordance with another approach an arrangement for insulation has been provided to isolate the cold from entering the basin. The basin has been insulated from the outside by the use of plates for instance xps (extruded polysturen) that need to be shaped to fit with the basin.

The idea when insulating the exterior of the basin is to maintain the warmth from the ground within the basin and to prevent the cold from entering the equipment accommodated in the basin. For adequate insulating it is thus necessary to provide a tight- fitting insulation structure that encloses the basin. The use of plate structures for insulation demands straps wounded circumferentially onto the basin to keep the plate structures in place. This is a cumbersome procedure to complete without gaps occurring between neighbouring plates. When using this method of insulating the risk of cold brigdes is present and experience has shown that the capacity for insulation is thus not satisfactory.

The need for insulation of basins that have a conical configuration has proven especially demanding and a need has arisen for providing a solution that is capable of sufficient insulation of basin having an outer configuration where parts or all of the basin has a conical shape.

WO 2015/117801 concerns the form- shaping of an insulation element by foam moulding, however the insulation element does not display a conical configuration.

NO 20045027 suggests a solution for insulation of concrete ring elements to be mounted on site to build a basin. The insulation is moulded directly onto the individual concrete rings and to avoid leakage in between the rings, some kind of joining material needs to be applied in situ. The publication suggests applying a foaming material in the joints between the rings. However, the prior art as presented in the publication has several disadvantages, firstly joining the insulation rings by applying foam in the between the rings has proven to produce a non satisfactory result. Further the actual foaming can not be carried out in the cold as the foaming demands a certain warm habitat for the foaming to occur and thus this procedure is not a reliable method to be employed through all seasons. As the insulation as described in NO 20045027 is to be applied on the concrete rings before installation in situ, the system of NO 20045027 can not be employed for existing water basins, only for the once planning to be installed.

Further prior art documents include DE 202011051521 U1, US 5608998 A and SE 521157 C.

An object of the present invention is to solve, or at least substantially alleviate, the above-described disadvantages of the prior art insulation structures and methods.

The invention is applicable both on existing basins and basins to be build, and would be especially suited for installation on basins having at least an outer surface with a conical configuration.

SUMMARY

The invention concerning a method for manufacturing an insulating element..

Further additional features are set forth in the dependent claims.

In accordance with the invention a method is provided for manufacturing an insulating element for a basin assembly having at least an outer surface with a conical configuration. The method comprises the following steps;

-providing a double walled mould by arranging an inner mould structure releasably connected to an outer mould structure to provide an essentially closed mould cavity in between the mould structures and providing access to the mould cavity through a filling opening,

-filling pourable foam through the filling opening into the mould cavity -forming the insulating element by curing the foam within the mould cavity while the inner mould structure and outer mould structure are connected in a closed position,

-releasing the inner mould structure from the outer mould structure

- removing the inner mould structure from the outer mould structure, wherein the the moulded insulating element is attached to the inner mould structure,

-separating the moulded insulating element from the inner mould structure, wherein the separating comprises shifting the moulded insulating element away from the inner mould structure by a detachment device which is movably arranged relative to the inner mould structure.

An insulating element is to be manufactured by the aforementioned method. The insulating element may be provided for a basin assembly having at least an outer surface with a conical configuration. The insulating element may have the shape of a sleeve with

-an inner configuration provided by an inner surface and formed complementary to be matable with the configuration of the conical shape of the outer surface of the basin assembly,

-an outer configuration provided by an outer surface with a conical configuration, wherein the insulating element is provided as a one piece moulded foam article being configured for removable arrangement onto the basin assembly in an installation position.

The insulating element may be arranged independent of the basin assembly. The insulating element may optionally later be removed from the basin assembly. The insulating element is provided to be placed onto the basin assembly such as in a one step installation procedure which then makes up the entire/complete installation procedure for the insulating element.

The insulating element may be installed by simply placing the insulating element on to the basin assembly. No additional steps or procedures are necessary other than positioning the insulating element for inserting the basin assembly into the insulating element and placing the insulating element so that the inner configuration of the insulating element accommodates the basin assembly.

The inner conical configuration of the insulating element may define a throughgoing hollow comprising a first opening and second opening. The first opening and second opening may be arranged at axially opposite end portions of the hollow. The second opening may be enlarged in comparison to the first opening. The through going hollow may be prepared for accommodating the conical shaped basin assembly so that a top portion of the conical shaped basin assembly fits into the first opening of the insulating element.

The end portion of the insulating element surrounding the first opening of the element may be provided as a first projecting cylindrical shaped annular element. The end portion surrounding the second opening of the element may be provided as a second projecting cylindrical shaped annular element.

The insulating element may be removably arranged. The insulating element is mountable over various basins and equipment projecting from the ground. The insulating element may provided as having a closed or open top portion to either cover the basin completely or to expose parts of the basin when in installed position. If the top portion is open some part of the basin or equipment may be visible when the insulating element is installed. In the latter case an additional cover element may be provided to complete the insulation of the basin by closing off the interior of the insulating element. If the need arises, the insulating element is easily removed from the installation site. For instance to be replaced by another insulating element, or the insulating element may be removed from the installation position for other reasons.

The insulating element is suitable for basin assemblies of various configuration, but is especially suitable for basin assemblies shaped with an outer surface having a conical configuration. The outer surface may comprise a portion of the outer surface of the basin assembly or allof the outer surfaces. The insulating element may also be suitable for basin assemblies where at least a portion of the outer surface is curved or double curved. The insulating element may be suitable for a conical shaped basin assembly housing water equipment such as valves and fittings, whether it is arranged for removably arranged installment or not.

As mentioned initially, insulation of conical shaped basins, both eccentric and concentrically shaped basins is a challenging problem to solve satisfactorily, and the provision of a solution producing a moulded one piece insulation element article facilitates the task of insulating the basins and provides a simple insulating element that is easy to install on site and ensures that the basins are insulated properly and frosting is avoided.

However, the invention may also be suitable for other installations that require protection from the cold, as the invention may provided custom build and may offer tight contact or a gapped accommodation for the equipment or installation to be insulated.

The double walled mould which is build as mentioned above by arranging an inner mould structure releasably connected to an outer mould structure to provide an essentially closed mould cavity may in one aspect by provided by

-arranging the inner mould structure conical shaped for defining the inner surface of the insulating element, and

- arranging the outer mould structure conical shaped for defining the outer surface of the insulating element.

In accordance with this aspect the inner conical shaped mould structure and outer conical shaped mould are assembled and a space between the structures is formed as a conical shaped mould cavity.

The distance between the inner mould structure and outer mould conical shape may be adjusted to set the size of the annulus circumferential dimension of the mould cavity to determine the material thickness between the inner and outer surface of the insulation element to be manufactured. If the insulation element is conically shaped, the set size determines the wall thickness of the sleeve as seen in the radial direction of the cone.

In accordance with the method for manufacturing an insulating element, the step of providing a double walled mould may include connecting the inner mould structure to the outer mould structure by attachment means such as for instance a threaded bar or other suitable means to position and fixate central portions of the inner and outer mould structures relative to each other. The main object of the attachment means is to provide a simple and easy workable principle for connection for instance for obtaining the closed position of the inner mould structure and outer mould structure and the later disconnection of the inner and outer mould structure. The attachment means should at the same time be capable of providing an effective holding force to keep the inner and outer mould structure in secure position relative to each other.

In accordance with a method for manufacturing an insulating element, the step of providing a double walled mould may comprise positioning a cover flange of the inner mould structure to cover and close off the mould cavity and/or connecting the inner mould structure to the outer mould structure. Locking means may be arranged at the outer circumference of the inner and outer mould structures to connect the inner mould structure to the outer mould structure to obtain the closed position of the the inner mould structure and outer mould structure. The cover flange of inner mould structure may be arranged at a top position of the double walled mould, when the inner and outer mould structures are assembled making up the double walled mould, and then covers the mould cavity to be filled with pourable foam.

The cover flange may be releasably connected for instance by clamping for attachment to the outer mould structure by the locking means engaging the cover flange in closed position onto the outer circumference area of the outer mould structure.

The locking means may comprise a locking pin fixed to the exterior of the outer mould structure and may be arranged to engage a locking bracket provided for instance at the cover flange. The locking nut may be used to lock the locking pin to the locking bracket or the locking action may be provided otherwise. One or plural locking means which may each comprise locking pin, locking bracket and possibly additional locking means such as a locking nut, may be positioned around the circumference of the double walled mould.

The outer mould structure may be provided with a bottom flange to close off the mould cavity which may be arranged as an integrated part of the outer mould structure or as an additional part to be attached to the outer mould structure. In the case where the insulation element to be produced has a through-going opening or hollow, the outer mould structure may also have a configuration of a through going hollow or opening. In order to produce the insulation element, the inner mould structure is then arranged in the outer mould structure so that the inner surface of the outer mould structure, the outer surface of the inner mould structure and the cover flange and bottom flange in combination provides the closed mould cavity. The outer mould structure may have no through going hollow or opening, ie it has a closed end portion. It may then be suitable for manufacturing an insulating element with a closed end or top portion. Alternatively the inner mould structure and outer mould structure may be have certain portions to be engaged in contact with each other to make up a closed off mould cavity also able to produce an insulating element with a trough going hole or hollow.

The inner mould structure may have a conical configuration with a first and a second open end portion. The outer mould structure may also have a conical configuration with a first and a second open end portion. The inner mould structure is dimensioned for fitting into the outer mould structure so that the first opening of the inner mould structure is essentially planar or aligned with the first opening of the outer mould structure, and the second opening of the inner mould structure is planar or aligned with the second opening of the outer mould structure to define the mould cavity with the cover flange and the bottom flange ensuring that the mould cavity is closed off. In an assembled state the double walled mould then has a through going opening or hollow. The bottom flange may have an annular outlay or any other configuration depending on the configuration of the insulation element to be manufactured.

In accordance with a method for manufacturing an insulating element, the step of providing a double walled mould may comprise arranging the filling opening in the cover flange of the inner mould structure. Then carrying out the step of filling pourable foam through the filling opening, while the inner mould structure and outer mould structure are connected in the closed position. It is of course also possible to fill the cavity with pourable foam otherwise, for instance the foam may be filled into the mould cavity before closing off the cavity. When the cover flange is attached to the inner mould structure, the most feasible way of filling the mould cavity is to provide an opening in the cover flange. If the cover flange is releasably attached to the inner mould structure (and the outer mould structure), the filling may occur before attachment of the cover flange. The filling opening may be arranged with a lid to open and close the filling opening, the lid may have a locking device to ensure that the lid is maintained in its closed position. The lid in its locked closed position ensures that the mould cavity is closed off.

Before filling the mould cavity with the foamable material, the double walled mould may be preheated to approximately 45°C, and a liner may be applied to the interior of the mould cavity, before filling the mould cavity with pourable foam. The foam is expanding in the closed off mould cavity at a relatively high pressure ensuring that the expanding foam fills the mould cavity within the boundaries of the mould cavity.

In one aspect the method for manufacturing an insulating element may comprise filling the mould cavity with the foamable material comprising foamable polyurethane which is foaming and expanding and then assumes the set or cured state thereby producing the foamed insulating element. The insulating element comprises pourable foam for instance foamable polyurethane which sets or cures to form the insulating element.

In accordance with a method for manufacturing an insulating element, the step of forming the insulating element may comprise forming a temporary attachment between the moulded insulating element and the inner mould structure by an anchorage member which is arranged in connection to the inner mould structure, for instance to the cover flange. By forming a temporary attachment between the article to be formed ie the moulded insulating element and the inner mould structure, it is ensured that the moulded insulating element follows the inner mould structure, when removing the inner mould structure from the outer mould structure. This arrangement ensures a simple release of the manufactured insulating element. If the moulded insulating element does not follow the inner mould structure it may be very cumbersome to remove the insulating element from the outer mould structure. The anchorage member for instance a plug element may have one end connected for instance to the cover flange. The other end of the anchorage member or the plug element is inserted into the mould cavity and will be brought into engagement with foam filled into the mould cavity. As the foam is setting or curing the anchorage member or the plug element is moulded into the insulation element. The insulation element is then removed from the outer mould structure along with the inner mould structure, and is later to be released from the inner mould structure.

When the forming of the insulating element is completed, the step of releasing the inner mould structure from the outer mould structure may comprise disengaging the attachment means (if present) between the central portions of inner and outer mould structure, for instance releasing nuts from the threaded bar, and releasing the locking means(if present) to release the circumferential portions of the outer and inner mould structure from engagement with each other.

In accordance with a method for manufacturing an insulating element, in preparation for the step of removing the inner mould structure from the outer mould structure, may include a step comprising applying a force to separate the inner mould structure (with the insulating element) away from the outer mould structure. The method may comprise a step of exerting a separating force by displacement means to split the inner mould structure with the insulating element from the outer mould structure. The displacement means may comprise jack means or any suitable means capable of providing a separating force preferably in a vertical direction to press the inner mould structure with the insulating element away from the outer mould structure. The displacement means for instance jack means is arranged with a movable part and a stationary part of the displacement means provided for engagement with the inner mould structure and the outer mould structure. The stationary part of the displacement means may be arranged in engagement with for instance a frame structure connected to the inner mould structure. The movable part of the displacement means maybe arranged to be brought into engagement with for instance a frame structure connected to the outer mould structure. When applying a separating force to the inner and outer mould structure by the displacement means the inner and outer mould structures split and the inner mould structure with the insulating element moves away from the outer mould structure.

When properly separated the inner mould structure with the insulating element is then ready to be removed for instance by lifting from the outer mould structure, such as by using a crane mechanism.

After the removal of the inner mould structure with the insulating element from the outer mould structure, the insulating element needs to be separated from the inner mould structure. The insulating element may be separated from the inner mould structure by applying a release force between the insulating element and the inner mould structure for instance by a detachment device. As mentioned previously , the step of separating the moulded insulating element from the inner mould structure comprises shifting the moulded insulating element away from the inner mould structure by a detachment device which is movably arranged relative to the inner mould structure and may have a connection to the inner mould structure. The detachment device may be movably arranged relative to flange cover. The detachment device may comprise a plate structure connected to a threaded bar. The threaded bar may be movably connected to the flange cover and may have an initial position where the plate structure is positioned near the flange cover at the side facing the mould cavity when assembled. When moving the detachment device, eg the threaded bar, in direction into the mould cavity, the plate structure urges the insulating element away from the inner mould structure to separate the insulating element away from the inner mould structure. One or several detachment devices may be provided for the separation of the insulating element from the inner mould structure. After the separation of the insulating element from the inner mould structure, the inner mould structure is yet again ready to be assembled with the outer mould structure for further manufacturing of insulating elements.

These and other characteristics of the invention will be clear from the following description of an exemplary embodiment, given as a non-restrictive example, with reference to the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic illustration of one embodiment of an insulating element.

Fig. 2 is an overall schematic illustration of one embodiment of a double walled mould for forming an eccentric conical shaped insulating element.

Fig 3. is an enlarged section of the double walled mould as illustrated in fig 2, showing a filling opening in larger detail.

Fig 4 shows an example of an inner mould structure for assembling with an outer mould structure to make up an double walled mould with an eccentric conical design, wherein

Fig 5 shows an example of the outer inner mould structure having an eccentric conical design.

Fig 6 shows a detail of the double walled mould of fig 2, as seen from above the double walled mould viewing down into the exterior of the inner mould structure.

Fig 7 shows a detail of the double walled mould of fig 2, showing a part of the as exterior of the outer mould structure.

Fig. 1 shows an example of an insulating element 1 for a basin assembly 2 here shown with an eccentric cone shaped basin assembly projecting from the ground. The insulating element 1 is shown with a complementary eccentric conical shape to fit onto the basin assembly 2. The basin assembly 2 houses water valves, fittings and equipment for connection of water pipe lines and is to be insulated by the insulating element 1, and after the installment of the insulating element 1, gravel and soil is heaped on to the the insulating element 1 mounted on the basin assembly 2 for burying in the ground.

The insulating element 1 has at least an outer surface with a conical configuration and in fig 1 the insulating element 1 is shown shaped as a sleeve. As illustrated an inner surface of the insulating element 1 has a configuration that is formed complementary to be matable with the configuration of the conical shape of the outer surface 20 of the basin assembly 1. The insulating element 1 is shown with an outer surface 11 that has an eccentric conical configuration. The insulating element is provided as a one piece moulded foam article prepared for installment on the basin assembly 2. The insulating element is fitted removably arranged onto the basin assembly 2. Optionally the insulating element may later be removed from the basin assembly. The insulating element 1 is installed by simply placing the insulating element on to the basin assembly 2. No additional steps or procedures are necessary other than positioning the insulating element 1 for inserting the basin assembly 2 into the insulating element 1 and then placing the insulating element 1 so that inner surface of the insulating element 1 accommodates the outer surface 20 of the basin assembly 2. In the illustrative example the inner configuration of the insulating element 1 defines a throughgoing hollow and has a first opening 12 and second opening 13. As seen in fig 1 the second opening 13 is enlarged in comparison to the first opening 12. The through going hollow is prepared for insert on to the shaped basin assembly 2 so that a top portion of the basin assembly fits into the first opening.

A first projecting cylindrical shaped annular element 14 is arranged surrounding the first opening 12, and a second projecting cylindrical shaped annular element 115 is arranged surrounding the second opening 13 of the insulating element 1.

Fig 2. shows the principle of a double walled mould 15 to be used for manufacture of an insulating element. The double walled mould 15 as shown in fig. 2 is shown resting in a support frame 50. The double walled mould 15 is provided for producing a concentric insulating element, but the principle build up for a double walled mould for the manufacture of an eccentric insulating element as the one shown in fig. 1 is essentially the same. Fig. 4 shows an illustration of an inner mould structure 56 with eccentric conical shape and fig 5 shows an illustration of an outer mould structure 57 with eccentric conical shape. The inner mould structure 56 and the outer mould structure 57 may be assembled following the principle of the double walled mould 15 as illustrated in fig 2. The inner mould structure 56 and the outer mould structure 57 of fig 4 and 5 may be used for manufacture of the insulating element as illustrated in fig 1.

The double walled mould 15 as shown in fig. 2 comprises an inner mould structure 16 that is releasably connected to an outer mould structure 17. An essentially closed mould cavity 38 is provided in between the inner and outer mould structures 16, 17. Attachment means 18 such as a threaded bar 30 and a nut mechanism 31 is provided to position and fixate central portions of the inner and outer mould structures relative to each other. A cover flange 25 of the inner mould structure 16 closes off the mould cavity 38. Locking means 26 is arranged at the outer circumference of the inner and outer mould structures to clamp the cover flange 25 of the inner mould structure 16 to the outer mould structure 17 in order to close off the mould cavity 38. Each locking means is shown comprising a locking pin 27 fixed to the exterior of the outer mould structure 17 and arranged to engage a locking bracket 28 connected to the cover flange 25 as illustrated in fig 3. A locking nut 29 is provided to lock the locking pin 27 to the locking bracket 28 and thereby close off the mould cavity 38 by clamping engagement between the cover flange 25 and the outer mould structure 17.

The outer mould structure 17 may be provided with a bottom flange 80 to close off the mould cavity which may be arranged as an integrated part of the outer mould structure 17 or as an additional part to be attached to the outer mould structure 17.

A filling opening 32 is arranged in the cover flange 25 for filling pourable foam into the mould cavity 38, see fig 3. The filling opening 32 is arranged with a lid 33 to open and close the filling opening. A locking device 34 is provided to maintain the lid 33 in its closed position by bringing a locking hook 36 of the locking device into a counter hook 35 to bolt the lid 33 to ensure that the mould cavity 38 is closed off.

When manufacturing an insulating element a pourable foam is filled through the filling opening into the mould cavity. The foam expands in the mould cavtity 17 and the insulating element is being formed by curing the foam within the mould cavity 38 while the inner mould structure 16 and outer mould structure 17 are connected in a closed position as shown in fig 2 and 3.

An anchorage member 60, see fig 2 and fig 3, is connected to cover flange 25 of the inner mould structure 16 . The anchorage member 60 which may be provided as plug element having one end connected to the cover flange and other end inserted into the mould cavity (not shown). When the foam as filled into the mould cavity is setting or curing the anchorage member 60 or the plug element is moulded into the insulation element. By use of the anchorage member 60 a temporary attachment has been formed between the moulded insulating element and the inner mould structure 16 in order to later ensure that the moulded insulating element follows the inner mould structure 16 , when removing the inner mould structure from the outer mould structure.

After the forming of the insulating element is completed, the inner mould structure 16 and the outer mould structure 17 are released from one another by disengaging the attachment means 18 and the locking means 26. The nut mechanism 31 is released from the threaded bolt 30 and the locking bolts 27 is disengaged from the locking brackets 28 to relieve the fixation of the inner mould structure from the outer mould structures. The inner mould structure 16 and outer mould structure 17 are ready then for disengagement.

Displacement means 64 may be provided as an hydraulically operated jack mechanism as shown in fig 1 and 6 and is arranged for exerting a force capable of splitting the inner mould structure 16 (with the insulating element attached to the inner mould structure) from the outer mould structure 17. The displacement means 64 rests on a support platform 90 which also has a couple of spring elements 91 attached. The other end of the springs 91 are attached to the frame structure 63 of the inner mould structure structure 16. The support platform 90 is arranged with a guide part 93 which is accommodated in a guiding structure 92, in fig 6 illustrated having the shape of a through going sleeve. The guiding structure 92 is attached to the frame structure 63 of the inner mould structure 16.

The outer mould structure 17 has a frame structure 65 as illustrated in fig 6 and the outer mould structure 17 is also illustrated by its bottom flange 80 and additional circumferential flange 81. The displacement means 64 comprises a stationary part 68 and a movable part 69. When the displacement means 64 is actuated, the movable part 68 moves away from the stationary part 69. A vertical force is then directed upwards against the frame structure 63. The movable part 69 moves the support platform 90 and the guide part 93 downwards until the guide part 93 engages the inner frame 65 of the outer mould structure 17. (The guide part 93 is dimensioned to fit into the guiding structure 92 and with a length adjusted so that it is capable of engagement with inner frame 65). In the engaged position with the inner frame 65, the displacement means 64 applies a force such as an axial lifting force in between the inner frame 65 of the outer mould structure 17 and the inner frame 63 of the inner mould structure 16, to displace the inner mould structure 16 with the insulating element away from the outer mould structure 16.

When the inner mould structure is split from the outer mould structure, the inner mould structure 16 is ready to be removed from the outer mould structure 17 by lifting the inner mould structure 16 vertically upwards from the outer mould structure 17, for instance by lifting the inner mould structure 16 by lifting means such as a crane connected to a hook 61a d attached to the inner mould structure 16. The temporary attachment as provided by the anchorage member 60 ensures that the moulded insulating element follows the inner mould structure 16 when being removed from the from the outer mould structure 17.

Fig 1 and fig 7 shows a detachment device 70 that is connected to the flange cover 25 and is movably arranged relative to flange cover for applying a release force between the insulating element and the inner mould structure 16. The applied release force is employed to separate the moulded insulating element from the inner mould structure 16 after the removal of the inner mould structure 16 from the outer mould structure 17. The detachment device 70 in accordance with the embodiment shown in fig 1 and fig 7, comprises a threaded bar 71 and a plate structure (not shown) connected to the threaded bar 71. The threaded bar 71 is to be movably arranged in the flange cover 25 and may have an initial position where the plate structure is positioned near the flange cover at the side facing the inside of the mould cavity 38. When moving the threaded bar 71 and thereby the plate structure further into the mould cavity 38, the plate structure urges the insulating element away from the inner mould structure 16 to separate the insulating element away from the inner mould structure 16.

In the above detailed description, various aspects of the method and system have been described with reference to the illustrated exemplary embodiment. Various modifications and variations of the exemplary embodiment, as well as other embodiments of the method, are considered to lie within the scope of the present invention as defined in the claims.

Claims

CLAIMS

1. Method for manufacturing an insulating element (1) for a basin assembly (2) having at least an outer surface (20) with a conical configuration, c h a r a c t e r i z e d i n t h a t themethod comprises the following steps

-providing a double walled mould (15) by arranging an inner mould structure (16) releasably connected to an outer mould structure (17) to provide an essentially closed mould cavity (38) in between the inner and outer mould structures (16,17) and providing access to the mould cavity through a filling opening (32), -filling pourable foam through the filling opening (32) into the mould cavity (38), -forming the insulating element (1) by curing the foam within the mould cavity (38) while the inner mould structure (16) and outer mould structure (17) are connected in a closed position,

-releasing the inner mould structure (16) from the outer mould structure (17), -removing the inner mould structure (16) from the outer mould structure (17), wherein the removing occurs with moulded insulating element (1) attached to the inner mould structure (16),

-separating the moulded insulating element (1) from the inner mould structure (16), wherein the separating comprises shifting the moulded insulating element (1) away from the inner mould structure (16) by a detachment device (70) which is movably arranged relative to the inner mould structure (16).

2. Method for manufacturing an insulating element in accordance with claim 1, c h a r a c t e r i z e d i n t h a t

said steps of providing a double walled mould (15) includes connecting the inner mould structure (16) to the outer mould structure (17) by attachment means (18) to position and fixate central portions of the inner and outer mould structures relative to each other.

3. Method for manufacturing an insulating element in accordance with claim 1 or 2 c h a r a c t e r i z e d i n t h a t

said step of providing a double walled mould (15 )comprises positioning a cover flange (25) of the inner mould structure (16) to cover and close off the mould cavity (38) and/or connecting the inner mould structure (16) to the outer mould structure (17) by locking means arranged at the outer circumference of the inner and outer mould structures (16, 17).

4. Method for manufacturing an insulating element in accordance with one of the claims 1-3,

c h a r a c t e r i z e d i n t h a t said step of providing a double walled mould (15) comprises arranging the filling opening (32) in the cover flange (25) of the inner mould structure (16), wherein carrying out the step of filling pourable foam through the filling opening (32), while the inner mould structure (16) and outer mould structure (17) are connected in the closed position.

5. Method for manufacturing an insulating element in accordance with one of the claims 1-4,

c h a r a c t e r i z e d i n t h a t

in preparation to the step of removing the inner mould structure (16) from the outer mould structure (17) exerting a force by displacement means (64) to split the inner mould structure (16) with the insulating element from the outer mould structure (17).

6. Method for manufacturing an insulating element in accordance with one of the claims 1-5, c h a r a c t e r i z e d i n t h a t the step of forming the insulating element (1) comprising forming a temporary attachment between the moulded insulating element and the inner mould structure (16) by an anchorage member (60) connectly arranged to the inner mould structure (16).

KRAV

1. Fremgangsmåte for å fremstille et isolasjonselement (1) for en kumsammenstilling (2) som har minst en ytre overflate (20) med en konisk konfigurasjon, k a r a k t e r i s e r t v e d a t

fremgangsmåten omfatter følgende trinn

- tilveiebringe en dobbeltvegget støpeform (15) ved å anordne en indre støpeformstruktur (16) frigjørbart forbundet med en ytre støpeformstruktur (17) for å tilveiebringe et i det vesentligste lukket støpehulrom (38) mellom de indre og ytre støpeformstrukturene (16,17) og tilveiebringe tilgang til støpehulrommet (38) gjennom en påfyllingsåpning (32),

- fylle hellbart skum gjennom påfyllingsåpningen (32) inn til støpehulrommet (38), - forme isolasjonselementet (1) ved å herde skummet inne i støpehulrommet (38) mens den indre støpeformstrukturen (16) og den ytre støpeformstrukturen (17) er forbundet i en lukket posisjon,

- frigjøre den indre støpeformstrukturen (16) fra den ytre støpeformstrukturen (17), - fjerne den indre støpeformstrukturen (16) fra den ytre støpeformstrukturen (17), hvori fjerningen foregår med det støpte isolasjonselementet (1) festet til den indre støpeformstrukturen (16),

- separere det støpte isolasjonselementet (1) fra den indre støpeformstrukturen (16), hvori separeringen omfatter å forskyve det støpte isolasjonselementet (1) bort fra den indre støpeformstrukturen (16) ved en fraskillelsesinnretning (70) som er bevegbart anordnet relativt til den indre støpeformstrukturen (16).

2. Fremgangsmåte for å fremstille et isolasjonselement i følge krav 1,

k a r a k t e r i s e r t v e d a t nevnte trinn for å tilveiebringe en dobbeltvegget støpeform (15) inkluderer å forbinde den indre støpeformstrukturen (16) til den ytre støpeformstrukturen (17) ved festemidler (18) for å posisjonere og feste sentrale partier av den indre og ytre støpeformstrukturen (16, 17) relativt til hverandre.

3. Fremgangsmåte for å fremstille et isolasjonselement i følge krav 1 eller 2, k a r a k t e r i s e r t v e d a t nevnte trinn for å tilveiebringe en dobbeltvegget støpeform (15) omfatter å posisjonere en lokkflens (25) av den indre støpeformstrukturen (16) for å dekke og lukke av støpehulrommet (38) og/eller forbinde den indre støpeformstrukturen (16) til den ytre støpeformstrukturen (17) ved låsemidler som er anordnet ved den ytre omkretsen av de indre og den ytre støpeformstrukturene (16, 17).

4. Fremgangsmåte for å fremstille et isolasjonselement i følge et av kravene 1-3, k a r a k t e r i s e r t v e d a t nevnte trinn for å tilveiebringe en dobbeltvegget støpeform (15) omfatter å anordne påfyllingsåpningen (32) i den indre støpeformstrukturens (16) lokkflens (25), hvori trinnet å fylle hellbart skum gjennom påfyllingsåpningen (32) utføres, mens den indre støpeformstrukturen (16) og den ytre støpeformstrukturen (17) er forbundet i lukket posisjon.

5. Fremgangsmåte for å fremstille et isolasjonselement i følge et av kravene 1-4, k a r a k t e r i s e r t v e d a t i forberedelse til trinnet å fjerne den indre støpeformstrukturen (16) fra den ytre støpeformstrukturen (17), å utøve en kraft ved forflytningsmidler (64) for å dele den indre støpeformstrukturen (16) med isolasjonselementet fra den ytre støpeformstrukturen (17).

6. Fremgangsmåte for å fremstille et isolasjonselement i følge et av kravene 1-5, k a r a k t e r i s e r t v e d a t trinnet å forme isolasjonselementet (1) omfatter å forme en midlertidig innfestning mellom det støpte isolasjonselementet og den indre støpeformstrukturen (16) ved et forankringselement (60) som er festbart anordnet til den indre støpeformstrukturen (16).

Drawings

Priority

10.04.2016 NO 20160582

Patent classes

IPC classes

B29C 44/02

E02D 29/12

CPC classes

B29C 44/02

E02D 29/12

E02D 29/128

Citations

WO 2015/117801 A1 (A1)

DE 202011051521 U1 (U1)

NO 20045027 A (A)

US 5608998 A (A)

SE 521157 C2 (C2)

Applicants, owners and inventors

Owners

WDF ISOLASJON AS

Opplandsveien 17

4877 GRIMSTAD

NO (GRIMSTAD Municipality, Agder county)

Org. number: 917329486

Inventors

Werner Krath

Alvildesvei 18

4879 GRIMSTAD

NO (GRIMSTAD Municipality, Agder county)

Agent

ACAPO ONSAGERS AS

Edvard Griegs vei 1

5059 BERGEN

NO (BERGEN Municipality, Vestland county)

Org. number: 932214636

Reference: P25192NO00

Status history

Payment history

Oppositions and appeals

No oppositions or appeals

Administrative limitation

No administrative limitation

Liens and licences

No liens or licenses registered

Gazette entries

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Only events from 2024.03.04 and onwards are shown.

METHOD FOR MANUFACTURING AN INSULATING FOR A BASIN ASSEMBLY