JPS6149108B2 - - Google Patents

Description

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

Conventionally, in this type of heat insulation panel, frame members 1 and 1', which are formed into a desired shape by extruding synthetic resin such as vinyl chloride and have a thickness of about 3 to 4 mm, are used as shown in Fig. 1. ing. This frame material 1,
A heat insulating panel is manufactured by assembling the surface plates 2, 2' to 1', setting it in the foaming device 3, and injecting a foaming substance such as urethane into the internal space to cause foaming.

In such a heat insulating panel, the thick frame members 1 and 1' form a heat bridge connecting the front panels 2 and 2', so it is desirable that the panels be as thin as possible. The same is true from the point of view of cost.

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

For this purpose, conventionally, molds 4, 4' are placed outside the frame materials 1, 1' during the foaming process of the insulation panel.
Depending on the shape of the frame material, for example, the inner surface of the mold 4' is formed to complement the outer surface of the frame material 1'. It was also necessary to provide suitable clamping means (for example, concave-convex fitting) so that the frame members 1, 1' could be attached to the molds 4, 4'. However, it is not preferable to incorporate such measures into the foaming process of the heat insulating panel because it complicates the work. Moreover, since the handling of the frame material itself is not improved in any way, the workability is extremely deteriorated. Furthermore, damage caused by defective products is not resolved.
Furthermore, conventionally, as in Japanese Patent Application Laid-open No. 52-121853, female and male edge members made of foamed plastic, which are the same as the core material of the insulation panels used as wall materials, have been used; They are easily damaged and damaged, and the joints between wall materials actually reduce their insulation properties, making it difficult to fit them together.

The present invention has been made in view of the current situation, and is easy to handle and set in a foaming device, does not require a mold or clamping means in the foaming process as a heat insulating panel, and can be used to create a wide and thin frame material. The object of the present invention is to provide a heat insulating frame body that can be easily manufactured and a method for manufacturing the same.

The heat insulating frame according to the present invention is characterized by a structure in which a foam portion made of a foamable material is closely attached to a frame material formed by extruding a synthetic resin having a thickness of 1 mm or less. In other words, in contrast to the conventional concept in which only the frame material is used as the frame, a new concept has been developed in which the frame is formed by adhering the foam portion to the frame material in advance, thereby increasing strength and rigidity. It solves the problems that have arisen. The production of such a heat insulating frame is basically done in the same way as the production of heat insulating panels.
Due to its small overall size, it is easy to manufacture and can be manufactured in large numbers at once. When considered as a whole, this makes it possible to manufacture heat insulating panels with high efficiency, reduce the possibility of producing defective products, and achieve cost reductions.

The present invention will be explained below with reference to FIGS. 2 to 11 by way of example.

The heat insulating frames 10, 10' shown in FIG. 2 are each composed of frame members 11, 11' and foam portions 12, 12' in close contact with the frame members 11, 11'. Frame material 1
1 and 11' are made by extrusion of synthetic resin such as vinyl chloride and have a thickness of 1 mm or less. Although a pair of frame members having a protrusion 11A and a recess 11'A that engage with each other are shown here, it goes without saying that the frame member 1 may have any desired shape, such as the frame member 1 shown in FIG. The foam parts 12, 12' are made of foamable synthetic resin such as urethane, and the frame parts 11, 1
It is preferable that the foam parts 12, 12' are foamed to bring them into close contact with each other. However, it is also possible to form them separately and glue them together. Foam part 1
The width dimensions W and W' of the frame members 2 and 12' are appropriately selected so that the frame members 11 and 11' have sufficient strength and rigidity against bending and torsion when integrated with the frame members 11 and 11'. . Therefore, the thickness of the frame members 11, 11' can be made as thin as possible, for example, about 1 mm or less, and the frame members 10, 1
0', that is, the adverse effects of heat bridge due to the frame members 11, 11' can be improved as much as possible.

Such heat insulating frames 10, 10 are easily manufactured as shown in FIGS. 3 to 5. For example, according to the method shown in FIG. 3, molds 13 and 1 each have a protrusion 11A and a recess 11'A of the frame members 11 and 11', and a complementary recess 13A and a protrusion 13'A.
3' is used. After arranging the frame materials 11 and 11' and covering them with a restraining plate P, a foaming substance such as urethane is injected and foamed inside to form the foam portion 1.
2 and 12' are formed into an integral shape, and then cut along the dashed line A to form individual frames 10 and 1.
Finish to 0'. After the foam parts 12, 12' are integrally foamed and solidified, in order to remove the integrated frames 10, 10' from the molds 13, 13', an appropriate mold release agent R is applied to the molds in advance. Apply it to 13 and 13'.

FIG. 4 shows a method for simultaneously manufacturing a large number of integral frames 10, 10' formed in FIG. 3.
In this method, a mold 14 having a protrusion 14A and a recess 14B on each side is placed between upper and lower restraining plates 15.
They are placed at appropriate intervals between them, and urethane or the like is injected and foamed into each space. Thereafter, it is cut in the same manner to obtain individual frames 10, 10'. In this method, a spacer 16 is installed between the frame members 11, 11' using grooves 11B, 11'B for engagement with the surface plate in order to determine the thickness dimension of the foam parts 12, 12'. This is desirable, and thereby prevents the grooves 11B and 11'B from being filled with urethane or the like. In this case, a mold release agent R is applied to the inner surface of the spacer 16.

5A and 5B use a material 17 obtained by extruding a frame material (here 11) into a horizontally continuous shape, and after setting it on a mold 18 having a complementary inner surface, a foaming material is applied in the same way. A method of foaming and solidifying is shown. The integrally solidified formed body 19 (FIG. 4B) is then cut at predetermined positions using a rotary saw 20 to obtain individual frames 10.

According to the method shown in FIG. 5, the space in the groove 11B may be collapsed due to the foaming pressure. In particular, the thinner the frame material is, the more easily it collapses. For this purpose, as shown in FIG. 6, the frame material portion 11C forming the groove 11B is previously formed into a medium-height shape to resist the foaming pressure, and the frame material portion 11C is deformed by the foaming pressure to have an almost parallel width. It can be made to have a groove. Alternatively, as shown in FIG. 7, as shown in FIG.
A slit 11D is previously formed in the frame material portion 11C that forms B at a position that will be cut later, and the T-bar 21 is fitted using this slit 11D to prevent the groove 11B from collapsing due to foaming pressure. can.

As shown in FIGS. 8A and 8B, a hollow member with a rectangular cross section having frame portions 31, 31' and 41 on four sides is extruded and filled with synthetic resin foam portions 32 and 42, respectively. It is something. In Figure A, first cut along the dashed-dotted line at the position of the double portion 31A for forming a groove for fitting with the surface plate, and then cut the central part along the dashed-double-dotted line. 4 frames 30, 30,
Obtain 30', 30'. In addition, in FIG. 4B, four frames 4 are formed by filling a hollow member with a square cross section with a foam portion 42 and then cutting it along the diagonal.
We get 0,40,40,40. The frames 30, 30' and 40 thus formed are used in a heat insulating panel as shown in FIGS. 9A and 9B, respectively. In particular, the frame 40 shown in FIG. 8B and FIG. 9B
According to this method, there is an advantage that the contact area with the core material 43 of the heat insulating panel increases and that the core material 43 and the entire surface of the surface plate 44 can be bonded in the foaming process of the core material 43. This is extremely advantageous compared to any of the other frames described above which require a butt bonding means for joining to the edge of the face plate.

Moreover, FIG. 10 shows still another method.
By assembling the grooved template 50 onto the frame members 51, 51' and filling the foam portion 52, the surface area of the foam portion relative to the insulation panel core material is increased and the cutting size is reduced. The template may have the structure shown in FIG. 4B, and may be formed from a steel or aluminum plate by bending, welding, etc., or by extrusion of aluminum. Such a frame body 53,5
3' is also incorporated into the heat insulating panel as shown in FIG.

In this way, the frame according to the present invention can be manufactured very easily, and even if the frame material becomes thinner, no particular difficulties arise in manufacturing or operation.

FIG. 11 shows another embodiment of the frame. This frame body 60 includes a frame member 61 and a foam portion 62, and in particular, the frame member 61 is provided with hooks 63 for connecting the heat insulating panels to each other. In order to attach this hook 63, a mounting groove 64 is previously formed in the frame member 61, and an opening 65 is formed at a predetermined position in the longitudinal direction. The hook 63 moves along the mounting groove 64 and is positioned at a predetermined position. In this state, the foam portion 62 is formed by foaming by the method described above. By providing the hook 63 on the frame in this way,
It becomes possible to install the heat insulation panel much more easily than the step of providing the hook.

As explained above, the frame according to the present invention can promote thinning of the frame material and improve the heat insulation properties of the heat insulating panel.Moreover, since the edges of the panel are covered with the synthetic resin frame material, There is no risk of damage or damage compared to synthetic resin foam with exposed core material. It is possible to achieve great effects such as improving the productivity of the insulation panel as a whole, achieving cost reduction, and minimizing damage caused by defective products caused by incorrectly setting the frame material. Furthermore, according to the insulating frame according to the present invention,
The thin synthetic resin frame material can be prevented from warping, bending, or bending.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the manufacturing state of a conventional heat insulating panel, Fig. 2 A and B are sectional views showing a frame for a heat insulating panel according to the present invention, and Figs. FIGS. 6 and 7 are sectional views showing a method for preventing the surface plate fitting groove from collapsing in the frame material, and FIGS. 9 is a cross-sectional view showing an example of the manufacturing method; FIG. 9 is a cross-sectional view showing how the frame shown in FIG. 8 is used in a heat insulating panel; FIGS. 11A and 11B are schematic cross-sectional views showing still another embodiment of the frame body. 10, 10', 30, 30', 40, 53, 60
...Frame body, 11, 11', 31, 31', 41, 5
1, 51', 61... frame material, 12, 12', 32,
42, 52, 62...foam portion, 14, 18...
...Mold, 63...Hook.

Claims (1)

[Scope of Claims] 1. A heat insulating frame for a heat insulating panel consisting of a thin synthetic resin frame with a thickness of 1 mm or less and a synthetic resin foam part that is in close contact with the frame. 2. A heat insulating frame for a heat insulating panel according to claim 1, wherein the frame material is made of hard vinyl chloride. 3. The heat insulating frame for a heat insulating panel according to claim 1 or 2, wherein the frame member has a protrusion for connecting with an adjacent panel. 4. A heat insulating frame for a heat insulating panel according to claim 1 or 2, wherein the frame member has a recess for connecting with an adjacent panel. 5. A heat insulating frame for a heat insulating panel according to any one of claims 1 to 4, wherein a hook for connecting panels is attached to the frame material and is embedded and held in a foam portion. 6 At least one thin synthetic resin panel with a thickness of 1 mm or less is covered with a synthetic resin foam material on the inside surface.
Insulation that is formed by injecting and foaming into a recess or hollow space formed by using another frame material or mold on its side or opposing surface, and then foaming and solidifying the foam as necessary, together with the frame material, or by cutting only the foam. Method of manufacturing a frame body.