JPS6229227B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method of manufacturing a construction board member which is made of a surface member and a foam and has interlocking connecting portions on both side edges of the surface member.

(Prior art and problems) Conventionally, as shown in FIG.
A surface made of a metal plate of an appropriate length formed by integrally bending and forming upright portions 2 and 3 on both sides of the edge toward the back side, and plug-in connecting portions 4 and 5 extending therefrom in a direction parallel to the surface portion 1. member 6;
The void formed between the surface portion 1 and the rising portions 2 and 3 is filled with a foam 7 forming a heat insulating material, and a flexible backing material 8 is layered on top of the foam 7. Architectural board members constructed by integrally combining these are known, and are used as exterior wall materials for houses.

In such construction board members, the foam 7 is usually fed while the facing material 6 is turned over and fed in one direction.
It is manufactured by a method in which a raw material is supplied, a backing material 8 is then layered thereon, the material is placed in a caterpillar type mold, and the material is foamed in the mold to form a predetermined shape. These building materials are manufactured in single strips, and if you try to manufacture multiple strips at the same time to increase productivity, you will need multiple sets of manufacturing equipment, which will require a large amount of space to set up the production line. It becomes necessary.

(Objective of the Invention) The present invention enables high efficiency manufacturing by simultaneously forming two architectural board members in parallel, and requires less space for the manufacturing line compared to the case where two sets of manufacturing lines are installed in parallel. The object of the present invention is to provide a method for manufacturing a construction board member.

(Structure of the Invention) In the present invention, a method for manufacturing a board member for construction includes forming a protruding portion projecting upward in the center portion along the length direction of the surface member, and bending the projecting portion upwardly in both side edges. After filling the void formed between the protruding piece and both bent pieces with a foam, the central part of the protruding piece is filled in the longitudinal direction. By cutting and subjecting the cut portion to the necessary bending process to form a two-strip member with an interlocking connection portion to the bent piece portion, and further cutting this into a predetermined length, Achieved the purpose.

(Example) Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view of a manufacturing device used to carry out the present invention, in which a flat strip-shaped surface member 6 is wound around a reel 9, is continuously fed out, and first bent by a bending device 10. . As shown in FIG. 2, this bending process forms an upwardly protruding piece part 11 in the center part in the length direction of the surface member 6, and a rising part 3, on both side edges. 3
Further, bending piece parts 12, 12 consisting of insert-type connecting parts 5, 5 extending horizontally therefrom are formed by bending.

Next, the bent surface member 6 is placed on a conveyor 13 consisting of a large number of trochanters and sent in the length direction at a constant speed, and if necessary, after preheating with a preheating device (not shown), piece part 12,
A raw material is supplied from a raw material supply device 15 in order to make a foam in the spaces 14, 14 formed between the two. The raw material supply device 15 has tanks 16 and 17 each containing raw materials for making the foam 7 made of a two-component reactive resin such as urethane resin, and a tank 18 containing inorganic aggregate for improving physical constitution. It consists of a connected mixer 19 and its nozzle 20, and these can be provided in two sets corresponding to the two cavities 14, 14, or the tanks 16, 17, 18 and the mixer 19 as the case may be. It is constructed by branching out a common nozzle 20, and the nozzles 20, 20 are located above the center of each cavity 14, 14.

A fixed amount of liquid raw material is continuously injected under pressure from each nozzle 20, as shown by the two-dot chain line in FIG. Both end portions of the spread of the raw material are bent piece portions 12, 12 which serve as female connecting portions 5 on both end side edges.
and thinly attached to the upward facing surface of the central projecting piece 11.

A reel 21 wound with a backing material 8 made of paper, tar felt, asbestos paper, metal foil, synthetic resin film, or a laminated combination of these as appropriate is arranged behind the raw material supply device 15. Two parallel lining materials 8 that have been fed out,
8 are superimposed and bonded to the connecting portion 5 and the protruding piece portion 11 of the surface member 6 using the raw material as an adhesive.

A heating furnace 23 having a heating air inlet 22a and an outlet 22b is arranged behind the reel 21,
The surface member 6 supplied with the raw material and overlaid with the backing material 8 is introduced into the heating furnace 23 . Heating furnace 23
There are two mold members 24 and 25 placed one above the other, which face each other one after another to form a mold 26 that moves in one direction on a substantially horizontal plane. The raw material foams inside the surface member 6 that moves together with the foam body 7.

The mold members 24 and 25 are made of stainless steel or carbon steel, and have an anti-rust or anti-corrosion plating layer on the surface, if necessary.
Drums 27, 28, 29, and 30 are composed of flat endless belts with flat surfaces and provided with a protective layer such as a silicone resin layer that has good sliding and peeling properties for molded products, and are arranged in the front and rear, respectively. is wrapped around. In the direction of movement of the mold 26, the front drums 27, 29 are driven by a prime mover (not shown), and the rear drums 28, 30 are supported by movable shaft supports, so that the tension of the mold members 24, 25 can be adjusted. It's becoming like that.

Each drum 27, 28, 29, 30 is a mold member 2
It has a length slightly larger than the width of 4.25 mm and is made of medium height. That is, as shown in FIG. 3, both ends are tapered to gradually become smaller in diameter, and both ends 32 are made smaller in diameter than the central part 31, or the whole is shaped like a drum, and there is a gap between the front and rear drums. In the portion where the mold 26 is to be formed, restraining members 33 and 34 consisting of a group of rolls are arranged to support the upper and lower mold members 24 and 25 horizontally and in parallel.

In addition, injection pipes 35 and 36 are arranged to blow heated air on the back surfaces of the mold members 24 and 25 toward the part where the mold 26 is to be formed, and in the center of the mold member 26 further below, a heat-resistant rubber tube is arranged. A protrusion 37 made of an elastic material such as the above is attached over the entire length or partially, and the raised portions 2, 2 of the central protruding piece 11 of the surface member 6 sandwich this protrusion 37 to prevent displacement in the width direction. It is maintained so that it does not occur.

The surface member 6 and the backing material 8 are sandwiched between upper and lower mold members 25 and 26, which face each other at a distance approximately equal to the height of the connecting portion 4, that is, the protruding piece portion 11, at the molding die 26, and move together with them. The raw material is heated and foamed to fill the void surrounded by the surface member 6 and the backing material 8 to form the foam 7, and the mold members 24, 25 are inverted along the drums 27, 29. sent out from between.

Next, the protruding piece 11 is cut in the length direction at the center by a slitter 38, and the cut part is subjected to the necessary bending process by a bending device 39, thereby forming a plug-in connecting part 5 formed on the bent piece 12. A connecting portion 4 is formed.

Then, by cutting this into a predetermined length, a construction board member is obtained.

In FIG. 3, the holding member 34 of the lower mold member 25 has approximately the same length as the drums 29, 30 so as to completely support the mold member 25, which has a width larger than the width of the two integrated surface members 6, 6. The holding member 33 of the upper mold member 24 is placed in the center of the uniform diameter of the drums 27, 28 so as to support the mold member 24 closer to the center than the connecting portions 5, 5 of the female molds at both ends. It is constituted by a roll having approximately the same length as the section 31.

In addition, it goes without saying that a plurality of nozzles 20 of the raw material supply device 15 can be arranged in parallel on one surface member 6, and the shape can be arbitrarily formed such as a round hole or a long hole, or the raw material can be sprayed or It may also be supplied by means such as gravity flow. Furthermore, the heating furnace 23 and either or both of the upper and lower injection pipes 35, 36 may be omitted, and the foam 7 may be formed at room temperature and pressure.

Further, the foamed body 7 of the plate member manufactured by the method of the present invention is desirably composed of thermoplastic synthetic resin among polymeric substances, and in particular, urethane resin is used for the backing material 8 and asbestos paper. When using , excess polyether remains in the urethane resin on the contact surface, which makes the surface layer of the urethane resin flexible, and even if slippage occurs between the mold member 20 and the mold member 20, it is buffered and absorbed, and the backing material 8 There is no possibility of damaging the foam or causing cracks in the foam 7. Furthermore, as the aggregate to be added as necessary, borates such as borax and meta-borax soda, silicates such as sodium silicate and sodium meta-silicate, phosphates such as dibasic sodium phosphate and sodium meta-phosphate, and other foams. Inorganic substances that foam and expand when heated to a temperature below the heat-resistant temperature of 7, or inorganic substances that do not have foaming and expansion properties such as aluminum hydroxide, alumina, silica sand, soda carbonate, and silica, as well as glass fibers and rock wool. Examples include inorganic short fibers such as pearlite particles, foamed inorganic particles such as cellular glass, and other known flame retardants, and one or more of these may be used as appropriate.

Furthermore, in this embodiment, the vertical distance between both side edges of the mold member can be increased in the portion where the mold is formed according to the medium-height shaped drum, so that the surface member 6 can be introduced into the mold. It is possible to manufacture the product by directly making the difference in height between the two connecting portions correspond to the difference in the interval between the upper and lower mold members.

(Effects of the Invention) As described above, the present invention forms a protruding piece at the center and a bent piece at both side edges in the length direction of the surface member, and then forms the protruding piece on the side edges. After filling the void formed between the projecting piece and both bent pieces with foam, the center of the protruding piece is cut in the length direction to make two pieces. By simply applying bending, filling, etc. to the strip-shaped surface member, it is possible to manufacture two members at the same time, which not only makes it possible to reduce the width of the surface member and the width of the device, but also
Since a conventional power source is sufficient, it is economical and can improve productivity, and also has various effects such as requiring less space on the production line.

[Brief explanation of the drawing]

Figure 1 is a schematic side view showing an embodiment of the present invention, Figures 2 and 3 are the - line and Y- line in Figure 1.
FIG. 4 is an enlarged cross-sectional view taken along the Y line and a vertical cross-sectional view of a construction board member manufactured according to the present invention. 1... Surface portion, 2, 3... Rising portion, 4, 5...
...Connecting portion, 6... Surface member, 7... Foam, 8...
...Backing material, 10...Bending device, 11...Protruding piece part, 12...Bending piece part, 14...Vacancy, 38...
...Sleeta, 39...Bending processing equipment.

Claims (1)

[Claims] 1. Forming a protruding piece that protrudes upward in the center part over the length direction of the surface member, and forming bent pieces that bend upward on both side edges, and then forming the protruding piece and both bent pieces. After filling the void formed between the bent piece and the foam, the center of the protruding piece is cut in the length direction, and the cut part is subjected to the necessary bending process to form the bent piece. 1. A method of manufacturing a board member for construction, comprising the steps of: forming a two-striped member with an interlocking connection portion formed thereon; and cutting the member into a predetermined length.