JPH04312813A - Manufacture of heat insulation material - Google Patents

Abstract

PURPOSE:To prevent the occurrence of a swelling in recessed parts by manufacturing a heat insulation plate such that non-restrictive rollers are made to about on respective recessed parts on the front side of a metallic hoop material worked into a trapezoidal form in its lower surface, to thereby pressure weld, slide, and transport it. CONSTITUTION:A lower surface metallic hoop 4 forming the lower surface is worked into a recession and protrusion by means of trapezoidal rollers 7 and the trapezoidally worked metallic hoop material 4A moves over non-restrictive rollers 3 being in press-contact with respective recessed parts. The non-restrictive rollers are placed on the lower surface endless conveyor 1. The non-restrictive rollers are made to press-contact and slide with the parts of recessed parts 4B in the metallic hoop material 4A trapezoidally worked in its lower surface, thereby reducing the foam pressure of synthetic resin stirring liquid injection-dispersed on the metallic hoop material 4A trapezoidally worked in its lower surface and preventing the occurrence of a swelling in the recessed parts 4B.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a method for producing heat insulating materials used for roofing members, wall members, and flooring materials in buildings.

0002

[Prior Art] Conventionally, as seen in Japanese Patent Publication No. 63-63367, a supporting convex portion for supporting the valley bottom on the side of the convex veins is provided on the outer periphery of a conveyor that conveys the metal hoop material on which the convex veins are formed. There is a way. In other words, it was manufactured by press-welding the upper and lower metal hoops containing synthetic resin foam between the upper and lower conveyors of an endless conveyor and the upper and lower conveyors of an endless conveyor equipped with branch convex portions that support the valley bottoms on the sides of the convex veins.

0003

The concave portions and convex portions on the front side of the trapezoidal metal hoop material swell due to the foaming pressure and internal heat generation of the synthetic resin foam. In order to prevent this, in Japanese Patent Publication No. 63-63367, a support convex part is provided on the outer periphery of the conveyor that conveys the metal hoop material on which the convex veins are formed, to support the valley bottoms on the sides of the convex veins. If the heat insulating board is thin, the method described in Japanese Patent Publication No. 63-63367 can solve the problem of concave deformation on the front side of the metal hoop material, but if the heat insulating material is thick, that is, if the foaming pressure and internal heat generation temperature are high, trapezoidal vein processing is required. The concave and convex parts of the metal hoop material bulge,
The concave press-contact support portion in contact with the trapezoidal metal hoop material applies a large pressure to the conveyor, which places an excessive load on the driving force of the conveyor. This causes local deformation of the conveyor.

0004

[Means for Solving the Problems] As a result of intensive research to solve the above problems, we have arrived at the present invention. That is, in the present invention, a lower metal hoop material is continuously supplied to continuously form trapezoidal veins using a trapezoidal vein forming roll, and an upper metal hoop material is continuously supplied to form the trapezoidal veins. The lower metal hoop material and the upper metal hoop material are transported vertically facing each other, and synthetic resin liquid is injected from a synthetic resin liquid stirrer onto the concave and convex portions on the back side of the trapezoidal veins of the lower metal hoop material. In the method of manufacturing a heat insulating material by scattering, the upper metal hoop material is pressed into contact with an endless conveyor on the upper surface after the synthetic resin stirring liquid is injected, and the upper metal hoop material is pressed into each concave part of the trapezoidal veined front side of the lower metal hoop material. A heat insulating material characterized by having a plurality of unrestrained rollers fixed at both ends to side end plates and arranged at predetermined intervals, placed on an endless conveyor on the bottom surface, and sliding under pressure from the time the synthetic resin agitation liquid is injected until the completion of foaming. On the other hand, a plurality of unrestrained rollers, both ends of which are fixed to the side edges and arranged at predetermined intervals, are placed on a stopped bottom endless conveyor, and the rollers are connected to the bottom metal hoop material. The lower metal hoop material is conveyed by pressing and sliding it into each recessed part of the trapezoidally processed front side, and the synthetic resin foam in the recessed parts and convex parts of the lower metal hoop material is prevented from swelling due to the foaming pressure. It is something. The invention will be explained with reference to the drawings.

FIG. 1 is a cross-sectional view showing the expansion of a recessed portion of a heat insulating board due to foaming pressure according to a conventional manufacturing method. The metal hoop material 5A whose side edges on the upper surface have been processed is pressed against the endless conveyor 2 on the upper surface, so that the surface thereof is flat. However, the convex portion 4C of the metal hoop material 4A processed with trapezoidal veins on the lower surface is flat because it is in pressure contact with the endless conveyor 1 on the lower surface, but the concave portion 4B "bulges" due to the foaming pressure of the injected synthetic resin stirring liquid. occurs.

FIG. 2 is an example of a schematic diagram showing a method of manufacturing a heat insulating material according to the present invention. Metal hoop material 5 forming the upper surface
is conveyed by being pressed against the endless conveyor 2 on the upper surface, with both ends processed by a plurality of presser rollers 6 facing upward and downward. On the other hand, the metal hoop material 4 on the lower surface forming the lower surface is processed into irregularities by a trapezoidal vein roller 7, and the trapezoidal vein processed metal hoop material 4A is transferred onto the unrestrained roller 3 which is pressed against the concave portion of each surface. Note that the unrestricted roller is placed on the endless conveyor 1 on the bottom surface. The unrestrained roller 3
is the concave portion 4 of the metal hoop material 4A processed with trapezoidal veins on the lower surface.
By sliding in pressure contact with part B, the foaming pressure of the synthetic resin stirring liquid injected and sprayed onto the trapezoidal veined metal hoop material 4A on the lower surface is reduced, thereby preventing "bulging" of the concave portion 4B. Therefore, the side end plate 11A (see FIG. 3) or the side end portion 11B (see FIG. 4) that fixes both ends of the unrestrained roller 3
is required as long as the length of the bottom endless conveyor 1 in the traveling direction. On the other hand, synthetic resin is injected and dispersed from a synthetic resin stirrer 8 into the concave portions and convex portions on the back side where the trapezoidal veins have been processed on the lower metal hoop material. Although only one agitator is shown in the drawing, if the unevenness is large, multiple agitators are used to control the amount of foam in the heat insulating board. Metal hoop material 4 with trapezoidal vein processing on the lower surface
The rollers 3 sliding in pressure contact with the respective recesses on the front side of A may be arranged closely until the synthetic resin agitation liquid is foamed, and may be arranged loosely after the foaming is completed. After passing through the endless conveyor, the heat insulating board is transported on conveying rollers 9 and cut into desired dimensions by a cutter 10.

FIG. 3 is an example of a cross-sectional view showing a method of manufacturing a heat insulating board. The heat insulating plate A is conveyed while being pressed against the metal hoop material 5A whose upper surface side edges are processed and the endless conveyor 2 on the upper surface. Synthetic resin agitation liquid is injected and dispersed into the irregularities on the back side of the trapezoidal veined metal hoop material 4A on the lower surface, and unrestrained rollers are placed on the endless conveyor 1 on the lower surface and fixed at both ends with the side end plates 11A. The metal hoop material 4A slides in pressure contact with each of the recesses 4B on the front side of the lower trapezoidal vein-processed metal hoop material 4A, thereby creating a heat insulating plate A without "bulges". In addition, since the synthetic resin stirred liquid foams and protrudes from the side edges during manufacturing of the heat insulating board, in order to prevent this, a protrusion prevention block 12 is installed in advance. The endless conveyor 1 on the lower surface and the endless conveyor 2 on the upper surface rotate at the same speed, so the unrestrained roller 3 and the endless conveyor on the lower surface are interlocked, and the uneven portions on the back side of the trapezoidal veined metal hoop material 4A on the lower surface are rotated. The unrestrained roller presses and slides on each concave portion 4B on the opposite side (surface) where the synthetic resin agitation liquid is injected and sprayed, and conveys it. By pressing, sliding, and conveying the trapezoidal grooves of the metal hoop material on the lower surface of the unrestricted roller 3, a heat insulating board without "bulges" can be manufactured.

FIG. 4 is a sectional view showing a method of manufacturing a heat insulating board, which is another example of the present invention. The heat insulating plate A is conveyed while being pressed against the metal hoop material 5A whose upper surface side edges are processed and the endless conveyor 2 on the upper surface. Synthetic resin agitation liquid is injected and sprayed into the uneven parts on the back side of the metal hoop material processed with trapezoidal veins on the lower surface, and the recessed part 4B on the front side of the lower metal hoop material 4A is connected to the gutter placed on the endless conveyor 1 on the lower surface. The heat insulating board is conveyed by pressing and sliding unrestrained rollers 3 whose both ends are fixed to the side ends 11B of the conveyor protection frame board 11. In principle, the endless conveyor 1 on the bottom is stopped. In other words, the trapezoidal vein-processed metal on the lower surface of the unrestrained roller 3 whose both ends are fixed to the side ends of the gutter-shaped conveyor protection frame plate placed on the endless conveyor 2 on the upper surface and the endless conveyor 1 on the lower surface. Pressure-weld to each of the recesses 4B on the front side of the hoop material.
It prevents "bulge" by sliding. That is, the upper endless conveyor and the unrestrained roller are conveyed while exhibiting interlocking behavior with the upper and lower metal hoops interposed therebetween. Therefore, a gap is provided in advance between the bottom 11C of the conveyor protection frame plate 11 and the unrestrained roller so that there is no resistance.

[0009]

Effects of the Invention: When a heat insulating board was manufactured by pressing, sliding, and conveying the unrestrained roller of the present invention into contact with each concave portion on the front side of a metal hoop material whose lower surface was treated with trapezoidal veins, it was found that Although the recessed portions were swollen due to the foaming pressure of the synthetic resin stirring liquid, the recessed portions of the heat insulating board according to the present invention were flat.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the swelling of the recessed portion of a metal hoop material whose lower surface has been processed into trapezoidal veins due to the foaming pressure of a synthetic resin stirred liquid in the recessed portion of a heat insulating board according to a conventional manufacturing method.

FIG. 2 is an example of a schematic diagram showing a method for manufacturing a heat insulating material according to the present invention.

FIG. 3 is an example showing a method of manufacturing a heat insulating board according to the present invention, in which pressure contact and sliding are performed by interlocking speed with an endless conveyor on the lower surface of unrestrained rollers that contact the recesses of a metal hoop material processed with trapezoidal veins on the lower surface. FIG.

FIG. 4 is another example showing the method for manufacturing a heat insulating board according to the present invention, in which a concave portion of a metal hoop material processed with trapezoidal veins on the bottom surface for manufacturing a heat insulating board with the endless conveyor on the bottom surface stopped; FIG. 3 is a cross-sectional view showing the relationship between the unrestrained rollers that come into contact with each other and a conveyor protection frame plate that holds the unrestrained rollers and protects the endless conveyor on the lower surface.

[Explanation of symbols]

1 Endless conveyor on the bottom surface 2 Endless conveyor on the top surface 3 Unrestrained roller 4 Metal hoop material on the bottom surface 4A Trapezoidal vein processed metal hoop material on the bottom surface 4B Recessed part 4C on the front side of the trapezoidal vein processed metal hoop material on the bottom surface 4C Trapezoidal vein processed metal on the bottom surface Convex portion on the front side of the hoop material 5 Metal hoop material on the top surface 5A Metal hoop material with side edge processing on the top surface 6 Side edge processing roller of the metal hoop material on the top surface 7 Trapezoidal vein processing roller on the bottom surface 8 Synthetic resin liquid agitator 9 Heat insulating board conveyance roller 10 Insulation board cutting machine 11 Conveyor protection frame board 11A Side end plate for fixing unrestrained roller 11B Side end part for fixing unrestrained roller of conveyor protection frame board 11C Bottom part of conveyor protection frame board 12 Side edge extrusion of synthetic resin foam Prevention block A
insulation board

Claims (2)

[Claims] 1. A lower metal hoop material and an upper metal hoop material in which the trapezoidal veins are formed by continuously supplying the lower metal hoop material and continuously supplying trapezoidal veins using a trapezoidal vein forming roll. In a method of producing a heat insulating material, the metal hoop material is conveyed vertically facing each other, and a synthetic resin liquid is injected and sprayed from a synthetic resin liquid stirrer onto the concave portions and convex portions on the back side of the trapezoidal veins of the lower metal hoop material, After the synthetic resin agitation liquid is injected, the upper metal hoop material is pressed into contact with the endless conveyor on the upper surface, and both ends are fixed to the side end plates in each concave part of the trapezoidal vein-processed front side of the lower metal hoop material, and are arranged at predetermined intervals. A method for manufacturing a heat insulating material, characterized in that a plurality of unrestrained rollers are placed on an endless conveyor on the lower surface, and the rollers are pressed and slid from after injection of a synthetic resin stirring liquid until completion of foaming. [Claim 2] When the lower metal hoop material is continuously supplied and conveyed using a trapezoidal vein forming roll, a plurality of The lower metal hoop material is conveyed by placing an unrestrained roller on an endless conveyor whose lower surface is stopped, and pressing and sliding the roller into each concave portion of the trapezoidal vein-processed front side of the lower metal hoop material. The method for manufacturing a heat insulating material according to claim 1, characterized in that: