JPS6149109B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat insulating panel in which the core material is foam-filled and a method for manufacturing the same.

Generally, as shown in Fig. 1, this type of insulation panel is assembled with frame members 1, 1' and a surface plate 2, set in a foaming device 3, and filled with a foamable material such as urethane into the internal space. It is manufactured by
In a heat insulating panel having such a structure, the frame material 1,
1' is manufactured by extruding a synthetic resin such as vinyl chloride to a thickness of about 3 to 4 mm and is used as a frame in Luo Dok.

In such a heat insulating panel, since the thick frames 1 and 1' form a heat bridge connecting both the front panels 2, it is desirable that they be as thin as possible. Also, from the point of view of cost, thinning is advantageous.

However, as the frame members 1 and 1' become thinner, their strength and rigidity against bending and torsion decrease, which causes problems in handling during transportation, setting in the foaming device 3, and deformation due to foaming pressure. Become. Furthermore, if a defective product occurs due to the collapse of the frame members 1, 1' during the foaming process, the entire heat insulating panel will be discarded, resulting in great damage.

For this purpose, conventionally, during the foaming process of the insulation panel, molds 4 and 4' are placed outside the thin frames 1 and 1', and the inner surfaces of these molds are shaped to complement the outer surfaces of the frame materials. , 1' were prevented from deforming. It has also become necessary to provide suitable clamping means for setting and holding the frame members 1, 1' in the molds 4, 4'. However, it is not preferable to incorporate all of these measures into the foaming process of the heat insulating panel because it complicates the work in the foaming process. Moreover, since the handleability of the thinned frame members 1, 1' itself is not improved in any way, the thinner the frame members 1, 1' are made, the worse the workability becomes. Furthermore, the problem of damage caused by defective products remains unsolved. Furthermore, conventionally, as in JP-A-52-121853, female and male edge members made of foamed plastic are used as frames, but the outer surfaces are easily scratched and damaged, and the connections between the panels are difficult. There were problems that it became difficult and the insulation properties deteriorated.

In view of the current situation, it is an object of the present invention to provide a heat insulating panel configured to promote thinning of the frame material and a method for manufacturing the same.

A feature of the present invention is the use of a frame made of a thin synthetic resin frame with a thickness of approximately 1 mm or less and a foamed material adhered to the frame. In other words, in contrast to the conventional concept of handling the frame material alone, the present invention is characterized in that the foam portion is brought into close contact with the frame material in advance to form a frame with excellent strength and rigidity, and this frame is used. shall be. With this new concept, a heat insulating panel with an extremely thin frame material can be realized without any manufacturing problems, and the above-mentioned problems can be solved.

Embodiments of the present invention will be described below with reference to FIGS. 2 to 5.

The embodiment shown in FIG. 2 is a frame material 1 having a thickness of approximately 1 mm or less and having the same shape as the heat insulating panel shown in FIG. 1.
1, 11', but the difference is that foam parts 12, 12' made of foamable synthetic resin such as hard urethane are adhered to the inner surfaces of the frame members 11, 11' in advance. The core material 13 is formed by injecting and foaming a foamable synthetic resin such as urethane into the internal space formed by the frames 10, 10' and the surface plate 2. Frame material 11,1
Concave grooves are formed on both side edges of the surface plate 1' as usual, and assembly with the frames 10, 10' is achieved by fitting the bent portions formed at the edges of the surface plate 2 into these concave grooves. will be held. The foam parts 12, 12' and the core 13 can be of the same or different materials.

The frame members 11, 11' are formed by extrusion processing of synthetic resin such as vinyl chloride, and can be formed into any of various commonly used frame shapes. Further, it is desirable that the foam parts 12, 12' be brought into close contact with the frame members 11, 11' by foaming, but it is also possible to form them separately and then bond them together. The strength and rigidity of the frames 10 and 10' are the same as those of the frames 11 and 10'.
Even if 11' is set to 1 mm or less, it is possible to obtain practically sufficient strength to withstand the foaming pressure of the core material 13 by selecting the material and dimensions of the foam portions 12, 12' that are in close contact with it.

The production of such frames 10, 10' can be accomplished by, for example, as shown in FIG.
1 and 11', fill the interior with a foamable material and foam, and then cut along the line A-A. Of course, it can also be made in other ways. The manufacturing method of the frames 10, 10' is basically the same as the foaming process of the core material 13 in the insulation panel in that the foam parts 12, 12' are formed by foaming, but the target dimensions to be manufactured are the same as those of the insulation panel. Since it is significantly smaller in comparison and easier to set, work efficiency is significantly improved and the occurrence of defective products is minimized.

In the heat insulating panel having such a structure, since the frames 10 and 10' have high rigidity, the manufacturing process, particularly the foaming process of the core material 13, can be manufactured using a simple foaming device 20 as shown in FIG.

That is, the foaming device 20 shown in FIG. 4 includes a pair of restraining plates 21 such as plywood, bolts and nuts 22 as restraining means, and spacers 2 arranged outside the frames 10 and 10' to set the distance between the restraining plates 21.
3, a foamable material injection device 24, and in particular, the spacer 23 is a conventional mold (4, 4' in FIG. 1).
It is not necessary to have an inner surface complementary to the frame material surface. Furthermore, since the frame members 10, 10' themselves are formed as blocks, there is no risk of them tilting, and no clamping means or the like is required.

Using such a foaming device 20, as shown in FIG. 4, the frames 10, 10', which have been formed in advance with the frame members 11, 11' and the foam parts 12, 12' in close contact with each other, are set together with the surface plate 2, and the core material is 13 is injected and foamed in the usual manner.

Depending on the insulation panel, the edge or frame material 11
A hook for connecting the panels may be provided at any position along the . In such a case, as shown in FIG. 5A, for example, a groove 30 for attaching the hook may be formed in advance in the frame material 11, and after the hook 31 is slid and attached, the foam portion 12 may be formed by foaming. can be easily installed. This greatly improves the workability of providing hooks to the heat insulating panels. Also, as shown in Figure B,
A long hole is bored in the frame 10, and the hook 31 is attached to the frame 1.
It may be inserted from the first side.

As explained above, according to the present invention, the productivity of insulation panels is improved by using a frame, and at the same time, it is possible to make the wall thickness of the frame as thin as 1 mm or less, and the insulation of panel connection parts is improved. In addition to improving the durability, it is protected without being scratched or damaged, there is no problem in connection work, and overall, significant effects such as a significant cost reduction can be achieved. In addition, the thin frame material bends and is given rigidity and strength without deforming due to flexure, improving handling during manufacturing, making it easier to assemble with the surface plate and set between restraint plates, and improve accuracy. It is possible to obtain effects such as being able to prevent the application of too much pressure.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a conventional heat insulating panel and its manufacturing state, FIG. 2 is a cross-sectional view of a heat insulating panel according to the present invention, and FIG. FIG. 4 is a cross-sectional view showing the manufacturing state of the heat insulating panel according to the present invention, and FIGS. 5A and 5B are cross-sectional views showing a frame provided with a hook. 2... Surface plate, 10, 10'... Frame, 11,
11'... Frame material, 12, 12'... Foam part, 1
3... Heart material, 14, 14'... Mold, 15, 20
... Foaming device, 21 ... Restriction plate, 22 ... Bolt nut, 23 ... Spacer, 24 ... Injection device, 30 ... Hook attachment groove, 31 ... Hook.

Claims (1)

[Scope of Claims] 1. A heat insulator consisting of a thin synthetic resin frame material with a plate thickness of approximately 1 mm or less, which has concave portions on both side edges into which the bent portions of the surface plate fit, and a synthetic resin foam material that is in close contact with the frame material. A heat-insulating frame body is arranged along the periphery of the panel, and a face plate is attached to the concave portion of each heat-insulating frame body from both sides of the panel by fitting the bent portion thereof, and the face plate is integrated with each heat-insulating frame body. A heat insulating panel made by filling the space surrounded by synthetic resin with foam. 2 Place one of the top plates between a pair of restraining plates, and place a heat insulating frame consisting of a synthetic resin frame with a thickness of approximately 1 mm or less and a synthetic resin foam tightly attached to the top plate. The other surface plate is assembled and arranged on the periphery, the other surface plate is faced and similarly fitted into the heat insulating frame, spacers are appropriately arranged around these, and the restraining plate is placed in a restrained state, and the heat insulating A method of manufacturing a heat insulating panel in which synthetic resin foam is injected into the space surrounded by the frame and the surface plate.