JPH0148876B2 - - Google Patents

Abstract

PURPOSE:To improve productivity and obtain the heat insulating panel with high dimensional accuracy by a method wherein hotpress operation is applied under employing a lower movement preventing jig, having protuberances for stoppers, and the upper movement preventing jig, having hanging down rims, for the operation. CONSTITUTION:The lower movement preventing jig 6 is provided with a base board 61, the protuberances 62 for stopping, which prevents the shifting movement of a lower surface plate 3 and peripheral frames 63, located at the periphery of the protuberances 62 and being projected upwardly to specify the thickness of the heat insulating panel. On the other hand, the upper movement preventing jig 5 is formed into a shallow box type provided with a top plate section 51, having the same configuration and size as the upper surface board 2, and the lower hanging down rims 52, bent downwardly from the peripheral rim of the jig. The lower surface plate 3, the heat insulating base member 1, the heat exchanger 4 and the upper surface board 2 are superposed on the lower movement preventing jig 6 while the upper mevement preventing jig 5 is put thereon. Then, the whole of them are hotpressed from upper and lower directions thereof under such combined condition by a hot and cold press method.

Description

[Detailed Description of the Invention] This invention provides heat insulating panels, such as floor heating panels, ceiling heating panels, wall panels for large refrigerators, etc., with heat medium circulation pipes, heat pipes, etc. buried inside, if necessary. The present invention relates to a method of manufacturing a panel configured to be equipped with a heat exchanger.

This type of heat insulating panel is generally a laminate, as shown in Fig. 1, in which upper and lower surface plates 2 and 3 made of metal plates etc. are integrally bonded to both sides of a heat insulating base material 1 made of foamed synthetic resin etc. In addition, in the case of a floor heating panel with a heat exchanger, at least one of the metal surface plates 2 on the front and back surfaces is used as a heat dissipation plate, and the heat insulating base material 1 is in contact with the metal surface plate 2 on both the front and back surfaces. A heat exchange pipe 4 such as a hot water pipe or a heat pipe is embedded and fixed in the pipe.

By the way, when manufacturing the above-mentioned heat-insulating panel, when bonding both the upper and lower surface plates 2 and 3 to the heat-insulating base material 1 using adhesive, the application process is troublesome and reduces productivity. bad. Therefore, recently, heat-adhesive expanded polystyrene (styrene maleic anhydride copolymer resin) is used as the heat-insulating base material 1, and surface plates 2 and 3 are stacked on both sides, followed by heat-pressing. Attempts have been made to directly fuse and integrate the surface plates 2 and 3 onto the heat insulating base material 1 by utilizing the adhesive force based on the melting of the surface portion of the material 1.

However, when such an adhesive processing method is used, the melted styrene foam on the surface of the heat insulating base material 1 acts as a lubricant during the heat-pressing step, causing the surface plate 2,
3 becomes very slippery, and this causes problems such as being glued out of position, making it difficult to produce products with high dimensional accuracy. For this purpose, in the past, the heat insulating base material and the surface plate were partially bonded to the assembled state before the heat-pressing operation, and then set in the hot-cold press, but the pre-assembly required many man-hours. However, they had to accept the disadvantages of increasing the number of parts and increasing the degree of processing of the parts.

The present invention aims to solve the above-mentioned problems and provide a method for manufacturing a heat-insulating panel that allows easy and accurate bonding between a heat-insulating base material and a face plate bonded to its surface. It is something to do.

In the embodiment shown in FIGS. 2 and 3, 1
is a heat-insulating base material made of heat-adhesive expanded polystyrene;
2 and 3 are upper and lower surface plates made of metal such as aluminum or iron, 4 is a heat exchange tube, and 5 and 6 are upper and lower two movement prevention plates used to assemble the above members together. It is a jig.

The lower movement prevention jig 6 has a flat base plate 61.
, a stopper protrusion 62 that surrounds the lower surface plate 3 placed thereon and prevents it from shifting laterally, and a stopper protrusion 62 that is located around the protrusion 62 and protrudes upward. The height dimension of the insulation panel,
That is, the circumferential frame portion 6 for regulating the thickness.
3. The protruding portion 62 and the peripheral frame portion 63 do not necessarily need to be manufactured in a continuous form, and may be formed in a segmented manner in the circumferential direction.

On the other hand, the upper movement prevention jig 5
a top plate portion 51 of the same shape and size as that which is stacked on top;
It is formed into a shallow box shape with a lower hanging edge 52 bent downward from the periphery. Of course, the lower hanging edges 52 do not need to be continuous in the circumferential direction as shown in the drawings, and may be provided in one or more segments on each of the four circumferential sides of the top plate portion 51.

In the above, when manufacturing a heat-insulating panel, the lower surface plate 3, the heat-insulating base material 1, the heat exchange tube 4, and the upper surface plate 2 are sequentially stacked on the lower movement prevention jig 6 as shown in FIG. They are arranged in a mating manner and covered with the upper movement prevention jig 5 from above. Then, in this assembled state, the whole is heated and pressurized from above and below using a hot cold press P. Then, due to the heat applied to the heat insulating base material 1 via the jigs 5 and 6 and the top plates 2 and 3, the surface portion thereof is partially melted, and this serves as an adhesive to bond the top plates 2 and 3 together. At this time, both the upper and lower surface plates 2 and 3 are
When the surface portions of the jigs are melted, they tend to slide and move, but the movement is prevented by the movement-preventing protrusions 62 and the lower hanging edges 52 of the jigs 5 and 6, respectively, and the jigs are held in the correct position. is glued to. Further, the thickness of the heat insulating base material 1 can be reduced by heating and pressurizing, but the amount of compression is regulated by the press hot plate coming into contact with the thickness regulating peripheral frame part 63, so that the thickness is reduced by a predetermined thickness. It is possible to produce a heat insulating panel as shown in FIG. 1 with uniform dimensions.

Note that when manufacturing a heat insulating panel that does not require a function as a heat exchanger, such as for use as a regular wall panel of a large refrigerator, the arrangement of the heat exchange tubes 4 can of course be omitted. It is. Although not shown in the drawings, in order to form a recess for panel bonding on the circumferential side of the heat insulating panel, a frame material such as a channel-shaped cross section is provided on the circumferential side of the heat insulating base material 1, sandwiched between both surface plates 2 and 3. may also be placed.

According to this invention, as described above, on both the upper and lower surfaces of the heat-insulating base material 1 made of heat-adhesive expanded polystyrene,
The upper and lower surface plates 2 and 3 made of metal or the like are stacked together and subjected to a heat-pressing operation in a unified manner, thereby melting the surface portion of the heat insulating base material 1 and converting the face plates 2 and 3 into the heat insulating base material 1. When fusion-bonding the base plate 61 and
A lower movement prevention jig 6 having a stopper convex strip 62 that surrounds the lower surface plate 3 placed on the base plate and prevents it from shifting laterally, and a lower surface plate 3 placed on the upper surface plate 2. An upper movement prevention jig 5 having a hanging edge 52 for a stopper to prevent the upper surface plate 2 from shifting laterally is used around the periphery of the top plate portion 51, and a heat insulating base material is used between the two jigs 5 and 6. 1
Since the heat-pressing operation is performed after the upper and lower surface plates 2 and 3 are arranged in a stacked manner, there is no need to temporarily assemble the heat insulating base material and the surface plate in advance to prevent relative movement during the bonding operation. By simply arranging the jigs 5 and 6 in a laminated manner and applying heat and pressure as they are, both the upper and lower surface plates can be adhered to the heat insulating base material in the correct position while preventing them from sliding. be able to. Therefore, it is possible to simplify the manufacturing process of a heat insulating panel, save labor, improve productivity, and obtain a heat insulating panel with high dimensional accuracy.

[Brief explanation of drawings]

FIG. 1 is a partially exploded perspective view showing an example of a heat insulating panel manufactured according to the present invention, and FIG. 2 is a perspective view showing the panel components and jig used in its manufacture in a separated state. FIG. 3 is a partially omitted cross-sectional view showing a state in which the above-mentioned members and the jig are assembled together before being subjected to a heat-pressing operation. DESCRIPTION OF SYMBOLS 1... Heat insulation base material, 2... Upper surface plate, 3... Lower surface plate, 4... Heat exchange tube, 5... Upper movement prevention jig, 6... Lower movement prevention jig, 51... ...Top plate part, 52...Descent edge, 61...Bed plate, 62...
Convex part.

Claims (1)

[Claims] 1. Top and bottom surface plates made of metal or the like are stacked on both the upper and lower surfaces of a heat-insulating base material made of heat-adhesive polystyrene foam, and heat-pressing is applied collectively to melt the surface portion of the heat-insulating base material. When the above-mentioned surface plate is fused and bonded to the heat insulating base material, the method includes a base plate and a stopper protrusion that surrounds the lower surface plate placed on the base plate and prevents it from shifting laterally. A jig for preventing lower movement and a jig for preventing upper movement having a hanging edge on the periphery of the top plate portion stacked on the upper surface plate for a stopper to prevent the upper surface plate from shifting laterally, 1. A method for producing a heat-insulating panel, comprising arranging a heat-insulating base material and both upper and lower surface plates in an overlapping manner between jigs, and then subjecting the heat-pressing operation to the heat-pressing operation.