JPS6229228B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing a construction board member comprising a facing material, a backing material and a foam, and having interlocking joints on both side edges of the facing material. It is something.

(Prior Art and Problems) As already shown in FIG. 4, there is a surface portion 1 of an appropriate width, rising portions 2 and 3 standing upright toward the back side of both side edges thereof, and extending from them in a direction parallel to the surface portion 1. A surface material 6 made of a metal plate of an appropriate length formed by integrally bending the plug-in connecting parts 4 and 5, and a synthetic resin filled in the void surrounded by the surface part 1 and the rising parts 2 and 3. A construction board member is known that is constructed by integrally combining a foam 7 and a flexible backing material 8 overlaid on the foam 7. Such construction members usually have rising portions 2 and 3 extending along the length of a flat strip-shaped surface material 6 and having the above-mentioned plug-type connecting portions 4 and 5 formed outwardly at both end edges thereof. The bent pieces 9 and 10 are formed, and the surface material 6 is turned over and fed in one direction while the raw material for the foam 7 is supplied to the void formed by both bent pieces 9 and 10, and then It is manufactured by a method in which the backing material 8 is stacked and placed in a caterpillar type mold, and the raw material is foamed in the mold to form a predetermined shape.

These architectural board members 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, and that will require a large space to install the production line. Further, there was a problem in that both the bent pieces 9, 10, that is, the connecting parts 4, 5, and the backing material 8 had to be adhered after molding.

(Objective of the Invention) The present invention enables high efficiency manufacturing by simultaneously forming two architectural board members in parallel, and requires fewer manufacturing lines than when 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 in which the bending pieces 9 and 10 and the backing material 8 are bonded together at the time of foaming.

(Structure of the Invention) In the present invention, a method for manufacturing a construction board member is provided in which an upwardly projecting piece portion is formed in the center portion of the surface material in the length direction, and an upwardly projecting piece portion is formed on both side edge portions. A bent piece is formed, and then a foamed synthetic resin raw material is spread over the space formed between this protruding piece and both bent pieces, both bent pieces, and the protruding pieces. After the raw material was foamed by layering the backing material on top of the foam, the central part of the protruding piece was cut in the length direction to form two members, which were further cut into a predetermined length. This achieved its 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 material 6 is wound around a reel 11, is continuously fed out, and first bent by a bending device 12. . That is, the second
As shown in the figure, an upwardly protruding piece 13 is formed in the central portion of the surface material 6 in the length direction by a protruding process, and rising portions 3 and 3 extending horizontally from both edges are formed. a plug-in type connecting portion 5 extending to;
5 are formed by bending.

Next, the bent surface material 6 is placed on a conveyor 15 consisting of a large number of trochanters and sent in the length direction at a constant speed, and if necessary, after being preheated with a preheating device (not shown), the bent surface material 6 is placed on a conveyor 15 consisting of a large number of trochanters, and after being preheated with a preheating device (not shown), Piece part 14,1
The raw material for making the foam 7 is supplied from the raw material supply device 17 so as to extend over the cavities 16, 16 formed between the foam body 4, both bent pieces 14, 14, and the protruding piece 13. . The raw material supply device 17 includes tanks 18 and 19 each containing raw materials for making the foam 7 made of a two-component reactive resin such as urethane resin, and a tank 20 containing inorganic aggregate for improving physical constitution. It consists of a connected mixer 19 and its nozzle 22, which are connected to two cavities 16, 1.
6 or two sets corresponding to tanks 18 and 1.
9, 20 and, in some cases, a mixer 21 are common, and the nozzle 22 is branched, and each cavity 16,
Nozzles 22, 22 are located above the center of 16.

A fixed amount of liquid raw material is continuously injected under pressure from each nozzle 22 and is diffused into a conical shape as shown by the two-dot chain line in FIG.
4, 14 and the protruding piece part 13, and at that time, both end portions of the spread of the raw material are bent piece parts 14, 14 which become female connecting parts 5 on both side edges.
and thinly attached to the upward facing surface of the central protruding piece 13.

A reel 23 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 17. Two parallel lining materials 8 that have been fed out,
8 are laminated and adhered to the connecting portion 5 and the protruding piece portion 13 of the surface material 6 using the raw material as an adhesive.

A heating furnace 25 having a heating air inlet 24a and an outlet 24b is arranged behind the reel 23,
The facing material 6 to which raw materials have been supplied and overlaid with the backing material 8 is introduced into the heating furnace 25 . Two mold members 26 and 27 are disposed above the heating furnace 25, and these mold members 26 and 27 face each other in order to form a mold 28 that moves in one direction on a substantially horizontal plane.
The raw material foams inside the surface material 6, which is narrowed by the surfaces 6 and 27 and moves together with them, to form a foamed body 7.

The mold members 26 and 27 are made of stainless steel or carbon steel, and their surfaces are coated with anti-rust and anti-corrosion plating layers, if necessary.
The drums 29, 30, 31, and 32 are made up of endless flat belts with a smooth surface and are provided with a protective layer such as a silicone resin layer that has good sliding and releasability for molded products, and other protective layers. It is wrapped. In the direction of movement of the mold 28, the front drums 29, 31 are driven by a prime mover (not shown), and the rear drums 30, 32 are supported by movable bearings so that the tension of the mold members 26, 27 can be adjusted. It's getting old.

Each drum 29, 30, 31, 32 is a mold member 2
It has a length slightly larger than the width of 6 and 27, 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 34, 34 are made smaller in diameter than the central part 33, or the whole is shaped like a drum, and the front and back of these parts are tapered. Holding members 35 and 36 consisting of a group of rolls are arranged between the drums at the portion where the mold 28 is to be formed, and support the upper and lower mold members 26 and 27 horizontally and in parallel.

In addition, injection pipes 37 and 38 are arranged to blow heated air on the back surfaces of the mold members 26 and 27 toward the part where the mold 28 is to be formed, and in the center of the mold member 27 further below, a heat-resistant rubber tube is arranged. A protrusion 39 made of an elastic material such as the above is attached over the entire length or partially, and the rising portions 2, 2 of the central projecting piece 13 narrow this protrusion 39 to prevent it from shifting in the width direction. is maintained.

The surface material 6 and the backing material 8 are sandwiched between upper and lower mold members 27 and 28 which face each other at a distance approximately equal to the height of the connecting portion 4 of the male mold, that is, the height of the protruding piece portion 13, in the molding die 28. The mold member 26 is moved together, the raw materials are heated and foamed to fill the void surrounded by the facing material 6 and the backing material 8 to form the foam 7, and the mold member 26 is inverted along the drums 29, 31. , 27.

The member configured by integrally combining the foam 7 between the surface material 6 and the backing material 8 as described above is cut in the length direction at the center of the protruding piece portion 13 using the slitter 40, Further, a bending device 41 performs necessary bending on this cut portion to form a connecting portion 4 to a plug-in type connecting portion 5 formed on the bent piece portion 14.

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

In this embodiment, since it is possible to widen the vertical distance between both side edges of the mold member in the part where the mold is formed according to the medium-height shaped drum, the surface material 6 can be introduced into the mold and both connecting parts can be widened. It is possible to manufacture the mold by directly making the difference in height correspond to the difference in the interval between the upper and lower mold members.

In addition, in FIG. 3, the holding member 36 of the lower mold member 28 has a length approximately equal to that of the drums 31 and 32 so as to completely support the mold member 27, which has a width larger than the width of the two integrated surface materials 6. The holding member 35 of the upper mold member 26 is formed of a roll, and the uniform diameter central portion 33 of the drums 29, 30 supports the mold member 26 closer to the center than the female connecting portions 5, 5 at both ends. It consists of rolls of approximately equal length.

Furthermore, it goes without saying that a plurality of nozzles 22 of the raw material supply device 17 can be arranged in parallel for one surface material 6, and the shape can be arbitrarily formed such as a round hole or a long hole, or the raw material can be It may also be supplied by means such as gravity flow. Furthermore, the heating furnace 25 and either or both of the upper and lower injection pipes 37, 38 may be omitted, and the foam 7 may be formed at room temperature and pressure.

Further, it is preferable that the foam 7 of the plate member manufactured by the method of the present invention is composed of a thermoplastic synthetic resin among polymer materials, and in particular, urethane resin is used for the backing material 8 and asbestos paper. When using the lining material 8, excess polyether remains in the urethane resin at the contact surface, which makes the surface layer of the urethane resin flexible, and even if slippage occurs between the mold member 26 and the mold member 26, it is buffered and absorbed. There is no possibility of damaging the foam or causing cracks in the foam 7. Furthermore, as aggregates to be added as necessary, borates such as borax and sodium metaborate, silicates such as sodium silicate and sodium metasilicate, phosphates such as dibasic sodium phosphate and sodium metaphosphate, 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.

(Effects of the Invention) As described above, the present invention includes forming a protruding piece in the center along the length of the surface material, forming bent pieces on both side edges, and then forming a protruding piece on both side edges. After supplying and foaming the raw material for the foamed synthetic resin over the space formed between the two bent pieces, both bent pieces, and the protruding piece, the center of the protruded piece is cut into a length. Since the material is cut in two directions,
Two strips of material can be manufactured at the same time by simply bending or filling a single strip of surface material. Not only can the width of the surface material and the width of the equipment be reduced, but the power source can also be used as a conventional method. It is economical and productivity can be improved because only one piece is required, and the space on the production line is also small. Since they are bonded together, there is no need to bond them again, and the number of steps can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing an embodiment of the present invention, and FIGS. 2 and 3 are X-X lines and Y-X lines in FIG. 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 material, 7 ... Foam, 8, 9
...Bending piece part, 10... Backing material, 12... Bending device, 13... Projecting piece part, 14... Bending piece part,
16... Blank space, 40... Sleater, 41... Bending device.

Claims (1)

[Claims] 1. An upwardly projecting piece is formed in the center along the length of the surface material, and upwardly bending pieces are formed on both side edges, and then this projecting piece and both bending pieces are formed. After supplying the raw material for the foamed synthetic resin over the space formed between the parts, the bent pieces, and the protruding piece, and then layering the backing material on top of it, the raw material is foamed. 1. A method of manufacturing a board member for construction, which comprises cutting the central part of the projecting piece part in the length direction to obtain two members, which are further cut into a predetermined length.