JP3193625B2 - Insulation wall manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a heat insulating wall used for a device having heat insulating properties, such as a showcase for storing goods such as frozen or refrigerated foods.

[0002]

2. Description of the Related Art Conventionally, as a heat insulating wall used for a showcase or the like, as shown in FIGS. 7 and 8, a foam insulating heat insulating wall is provided between a pair of an outer plate 10 and an inner plate 11 facing each other at a predetermined interval. A material filled with a material 12 is known. The heat insulating wall holds the outer plate 10 and the inner plate 11 at a fixed interval by a spacer (not shown), and closes an end face between the outer plate 10 and the inner plate 11 with a sheet 13 for preventing leakage. It is formed by fixing the inner plate 11 to a jig, injecting a heat insulating material 12 between the outer plate 10 and the inner plate 11 and foaming the same. An elastically deformable seal member 14 made of rubber or the like is attached to one surface of the peripheral end of the heat insulating wall. When a plurality of heat insulating walls are joined to each other, the end surfaces of the heat insulating wall are brought into contact with each other with the seal member 14 interposed therebetween. In contact. In some cases, instead of the sheet 13, wood or the like also serving as a spacer is disposed at an end between the outer plate 10 and the inner plate 11.

[0003]

However, conventionally, after injection and foaming of the heat insulating material 12, the seal member 14 must be separately adhered to the end face of the heat insulating wall with an adhesive or the like, which increases the number of work steps and increases productivity. There was a problem of lowering.
When a plurality of heat insulating walls are joined, the thickness of the sealing member 14 interposed between the heat insulating walls at the time of compression is not constant.
There is also a problem that an error occurs in the dimensions of the heat insulating walls in the joining direction.

The present invention has been made in view of the above problems, and has as its object to provide a heat insulating wall which does not require a separate sealing member to be attached to an end surface of the heat insulating wall, and a method of manufacturing the same. It is in. It is another object of the present invention to provide a method of manufacturing a heat insulating wall which does not cause an error in dimensions in a joining direction even when a plurality of heat insulating walls are joined, in addition to the above object. .

[0005]

According to the present invention, in order to achieve the above object, a foam insulating material is filled between a pair of exterior plates facing each other at a predetermined distance from each other, and at least one surface of a peripheral end is filled. In the method of manufacturing a heat insulating wall to be brought into contact with an arbitrary joining partner, a gap at a predetermined interval extending in a width direction of each exterior plate is formed on at least one surface of the peripheral end, and the gap between each exterior plate is set so as to face this gap. After disposing an elastically deformable seal member from the inside and closing between the edges of each exterior plate from the outside, a heat insulating material is injected between each exterior plate so that the seal member is compressed from the inside, and heat insulation is performed. After the hardening of the material, the closure between the edges of each armor plate is released.

[0006] Thereby , a separate seal is provided on the joint end face of the heat insulating wall.
There is no need to attach a screw member. In addition, since the seal member swells outward by applying pressure due to the injection and foaming of the heat insulating material, the number of steps does not increase in the swelling formation of the seal member.

[0007]

1 to 6 show one embodiment of the present invention. FIG. 1 is an overall perspective view of a heat insulating wall, and FIG.
FIG. 6 to FIG. 6 are side sectional views of the main part.

The heat insulating wall has a pair of an outer plate 1 and an inner plate 2 forming an outer plate, and a space between the outer plate 1 and the inner plate 2 is filled with a foaming heat insulating material 3. The outer plate 1 and the inner plate 2 are made of a metal plate, and are provided with vertical pieces 1a and 2a at their peripheral edges, each of which has an edge bent vertically. An elastically deformable sealing member 4 is provided on one surface of the peripheral end, which swells outside the outer plate 1 and the inner plate 2 by the pressure of the heat insulating material 3 injected into the outer plate 1 and the inner plate 2. .

When manufacturing the heat insulating wall, as shown in FIG. 3, the outer plate 1 is located between the vertical pieces 1a, 2a of the outer plate 1 and the inner plate 2.
The outer plate 1 and the inner plate 2 are opposed to each other so as to form a gap A extending in the width direction of the inner plate 2, and the sealing member 4 is placed from the inside of the outer plate 1 and the inner plate 2 so as to face the gap A. The jig 5 closes the space between the edges of the outer plate 1 and the inner plate 2 from the outside, and injects the heat insulating material 3 between the outer plate 1 and the inner plate 2 to foam. As a result, as shown in FIG. 4, the sealing member 4 is compressed by the pressure caused by the injection and foaming of the heat insulating material 3, so that the jig 5 is removed after the heat insulating material 3 is hardened, and the ends of the outer plate 1 and the inner plate 2 are removed. When the closure between the edges is released, the seal member 4 is restored by elastic deformation and swells outward from between the outer plate 1 and the inner plate 2 as shown in FIG.

When the heat insulating wall constructed as described above is joined to another heat insulating wall, the end face provided with the sealing member 4 is closed at the end face of the other heat insulating wall, that is, the end face closed only by the sheet 6 for preventing leakage. , The seal member 4 is compressed by elastic deformation, and the seal member 4 seals between the heat insulating walls. In this case, since the sealing member 4 is compressed by the jig 5 at the time of manufacture in a state where the edges of the outer plate 1 and the inner plate 2 are closed, the outer plate 1 and the inner plate are brought into contact by another heat insulating wall. It is possible to compress up to two edges.

As described above, according to the heat insulating wall of this embodiment, the outer surface of the outer plate 1 and the inner plate 2 is expanded by the pressure of the heat insulating material 3 injected into the outer plate 1 and the inner plate 2 on one surface of the peripheral end. Since the elastically deformable sealing member 4 is provided, there is no need to separately attach a sealing member to the joint end surface, and the labor of the operation can be greatly reduced. Further, since the seal member 4 is formed so as to be compressible to the edges of the outer plate 1 and the inner plate 2, the edges of the outer plate 1 and the inner plate 2 can be directly brought into contact with the joining partner, and the dimension in the joining direction Errors can be reliably prevented. Furthermore, since the sealing member 4 is caused to bulge outward by applying pressure due to the injection and foaming of the heat insulating material 3, the bulging of the sealing member 4 can be performed without increasing the number of steps, It is very advantageous in manufacturing.

[0012]

As described above, according to the present invention ,
Since there is no need to separately attach a seal member to the joint end surface of the heat insulating wall, the labor of the operation can be greatly reduced, and the productivity can be improved. Moreover, the Ru can be done without causing an increase in the number of steps the bulge forming sealing member
This is extremely advantageous in production.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a heat insulating wall showing one embodiment of the present invention.

FIG. 2 is a sectional side view of a main part of a heat insulating wall.

FIG. 3 is a sectional side view of a main part of the heat insulating wall showing a manufacturing process.

FIG. 4 is a cross-sectional side view of a main part of a heat insulating wall showing a manufacturing process.

FIG. 5 is a sectional side view of a main part of the heat insulating wall showing a manufacturing process.

FIG. 6 is a cross-sectional side view of a main part of the heat insulating wall showing a state where the end faces are in contact with each other.

FIG. 7 is an overall perspective view of a heat insulating wall showing a conventional example.

FIG. 8 is a sectional side view of a main part of a conventional heat insulating wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Outer board, 2 ... Inner board, 3 ... Heat insulation material, 4 ... Seal member.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 60-28382 (JP, U) Japanese Utility Model Showa 36-13398 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) F25D 23/08 A47F 3/04

Claims (1)

(57) [Claims] 1. A method of manufacturing a heat insulating wall , comprising filling a foaming heat insulating material between a pair of exterior plates facing each other at a predetermined distance from each other.
In the method , at least one surface of the peripheral end extends in the width direction of each exterior plate.
A gap is formed, and it can be elastically deformed from the inside between each exterior plate so as to face this gap.
Function seal members are placed between the edges of each panel from outside.
After closing, the seal member is compressed from the inside between the respective exterior plates.
A method of manufacturing a heat-insulating wall , comprising: injecting a heat-insulating material into a heat-insulating material ;