JPH0449457B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention involves discharging an unfoamed synthetic resin foam raw material between a surface material with a gutter-like cross section and a sheet-like back material, reacting the raw material in a cure oven, The present invention relates to a composite plate manufacturing apparatus that can foam and bond front and back materials together, and can continuously form a foam that serves as a core material and a heat insulating material. (Conventional technology) As a conventional technology, for example,
As shown in Japanese Patent Publication No. 58-44468, an unfoamed synthetic resin raw material is discharged between the surface material and the back material, and it is placed in a predetermined position via a caterpillar type or steel belt type mold member. There is a manufacturing device for composite plates that continuously manufactures shapes. (Problems to be Solved by the Invention) Conventional devices, especially when a steel belt is used as a shape material, have a weak point that the composite plate cannot be stably conveyed in one direction unless the front and back surfaces of the composite plate are flat as a whole. Caterpillar type equipment is larger and has a conveying speed of 10 to 20 m/min, compared to 30 to 40 m/min for steel belts.
Not only was the speed slower, but when a continuous band was used as the surface material, it was unable to absorb the speed difference with other devices, causing damage to the surface material. (Means for Solving the Problems) In order to solve these problems, the present invention includes a group of conveying rollers corresponding to the decorative surface of the surface material and a group of regulating rollers that guide the surface material in one direction. A group of lower rollers arranged alternately in the traveling direction of the surface material and an upper roller group that guides the back surface material, contacts the back surface of the surface material, and guides the composite board horizontally by being held between the lower roller group. , a cure oven in which these rollers are housed in a heated atmosphere, a conveyor that guides the surface material to the cure oven, and guide rollers that guide the back material to the back surface of the surface material. (Function) According to this configuration, the composite plate is conveyed and heated while regulating the volume of the foam in a line contact state by a group of rollers arranged corresponding to the shapes of the front and back surfaces. (Example) An embodiment of the composite plate manufacturing apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing the apparatus according to the invention, and FIG. 2 is a plan view thereof. . In the figure, 1 is a conveyor, 9 is a guide roller, 10 is a cure oven, 29 is a foam raw material feeder (hereinafter simply referred to as a mixer), 30,
31 is a motor, 32 is a running cutter, 33 is a front material, 34 is a back material, and 35 is a foam. To explain further, the conveyor 1 transfers the surface material 33 to the mixer 29.
Main shafts 7 and 8 are equipped with transport rollers 2 and 3 for guiding and transporting the curing oven 10 to the entrance of the cure oven 10, and regulating rollers 4, 5 and 6 having a free roller structure. Conveyance rollers 2, 3
are either driven or of a free roller structure, and each decorative surface 33a, 3 of the surface material 33
A cylindrical roller having a diameter corresponding to 3b is used to place the surface material 33 as shown in FIG. This is to prevent the material 33 from being displaced in the left-right direction while it is moving and from leaving the conveyance path. In addition, the conveyance rollers 2 and 3 and the regulation roller 4,
5 and 6 alternately with respect to the advancing direction of the surface material 33,
Alternatively, it may be placed at an appropriate position. Also,
The guide roller 9 guides the back material 34 to the back surface of the surface material 33 laminated with the unfoamed foam raw material 35a, and can displace the support position up and down or front and back to cope with the reaction system of the foam 35. It was set up like this. In addition, Cure Oven 10
are arranged in series immediately after the exit of the conveyor 1 , and reactions occur mainly between the front material 33 and the back material 34.
The foam raw material 35a in the middle of foaming is held between them, conveyed, molded, cured, and sent out as a continuous composite belt as shown in FIG. 4 at the exit. Its structure is as shown in FIGS. 1, 2, and 4 a and b. The lower roller 1 has a drive roller 12 and a free roller 13 coaxially attached to a main shaft 11.
Regulation rollers 16, 17, 1 are arranged between the transport roller group 15 and the lower roller 14 arranged in the form of a ladder, and guide the left and right side edges and step portions of the surface material 33.
8 supported on a support shaft 19 in a free roller structure and the lower rollers 14 of the conveying roller group 15 exist.
3 and 34 are held and conveyed, and the composite plate 36
The inside of the cure oven 10 is connected to an upper roller group 22 in which upper rollers 21 having a drive roller structure that regulates the thickness of the material and horizontally guides the backing material 34 are arranged in a ladder shape.
Heater 24 and heater 24 that heat to about 30 to 150℃
and a cover 25 that surrounds the heated gas to prevent it from leaking to the outside. To explain further, the main shaft 11 is connected to the surface material 33 as shown in FIG. 4a.
A cylindrical drive roller 1 is mounted on the decorative surfaces 33a and 33b of the
2. The free roller 13 is tilted and supported on a pedestal (not shown) so that the outer periphery of the free roller 13 contacts with no difference in circumferential speed. In particular, the reason why all of the lower rollers 14 were not used as drive rollers is that, as is clear from the figure, there is a difference in diameter between the drive roller 12 and the free roller 13, and the resulting difference in frictional resistance on the decorative surfaces 33a and 33b is The surface material 33 can be easily transported in one direction without being twisted, and
This is to prevent damage to the decorative surfaces 33a and 33b.
Further, the upper roller 21 is fixed to the main shaft 23, and the cover 25 has openings at its exit and entrance that are large enough to allow the composite plate to pass through.
Furthermore, the main shafts 11 and 23 of the conveyance roller group 15 and the upper roller group 22 are driven by transmission shafts 26 and 27, respectively, through gears 28 or belts (not shown) so as to have the same speed. It is. The mixer 29 mixes each component of the foam raw material 35a and then discharges it onto the back surface of the surface material 33, and the running cutter 32 cuts the composite strip into regular lengths. In addition, the surface material 33 is a metal plate (Fe, Al, Cu)
A cross section with a stepped decorative surface, for example, Fig. 5a
It is molded as shown in ~h, and the back material 3
4 functions as a member of a noncombustible sheet, a waterproof membrane, a heat shield sheet, a water absorption sheet, a soundproof sheet, a release sheet, a packing material, a reinforcing sheet, etc., such as asbestos paper, kraft paper, asphalt felt, metal foil ( (Al, Pb, Fe), synthetic resin sheets, rubber sheets, cloth sheets, glass cloth, or a combination of one or more of these, or such sheets are treated with waterproofing, flame retardant, etc. It consists of things that have been done. The foam raw material 35a includes, for example, a resin for polyurethane foam, a resin for polyisocyanurate foam, a resin for resol type benzyl ether type phenol foam, and flame retardants, flame retardant aids (borax, sodium metaborate, carbonic acid). Calcium, aluminum hydroxide, antimony trioxide, bentonite, pearlite grains, shirasu balloon 1
It consists of things with added seeds or more. Next, the operation will be explained. Now, the surface material 33 is a colored steel plate, thickness 0.27.
mm, aluminum and asbestos paper are prepared as the backing material 34, polyisocyanurate foam raw material is prepared as the foam raw material 35a, and it is assumed that a composite plate 36 as shown in FIG. 6 is manufactured continuously at a speed of 30 m/min. . Therefore, when the surface material 33 is molded into the cross-sectional shape shown in FIG . do. On the way, mixer 29 is installed in the gutter-like part of surface material 33.
An unfoamed foam raw material 35a is discharged from the chamber.
In this case, since the surface material 33 is supplied in a continuous band from a molding machine (not shown), the conveyance rollers 2 and 3 are supported by the main shaft 7 in a free roller structure. Next, the back material 34 is guided to the back surface of the surface material 33 via the guide roller 9 to cover the opening of the gutter-like portion. Then, the raw material 35a, which is undergoing reaction and foaming, is interposed between the front and back materials 33 and 34, and moves straight in line contact within the interval defined by the conveying roller group 15 and the upper roller group 22. Of course, the front material 33 and the back material 34 are conveyed while being held between the drive roller 12 and the upper roller 21. While passing through the cure oven 10, the foam raw material 35a reacts and foams, fixing the front and back materials 33 and 34 together and forming a foam 35. Next, the composite belt sent out from the outlet of the cure oven 10 is fed to the traveling cutter 3.
2 to a regular length. What has been described above is only one embodiment of the composite plate manufacturing apparatus according to the present invention, and the regulating rollers 4, 5, 16, and 17 are formed in a cylindrical shape as shown in FIG. 7a, or as shown in FIG. 7b. It can be installed in a reverse tapered shape like this,
As shown in FIG. 8, the conveyance rollers 2 and 3 can also be formed into a tapered shape. Also, Figure 9a
As shown in the guide roller 9 and cure oven 1
A spreading roller 9a is arranged between the entrances of the
As shown in figure b, the backing material 33 is guided as shown in the figure, and the foam raw material 35a is discharged along the way,
The foam raw material 35a can also be discharged to a position where the guide roller 9 and the surface material 33 face each other, as shown in FIG. In addition, as shown by the two-dot chain line in FIG. 1, the heater 24 may be extended over the upper roller group 22, the cover 25 may be extended to a portion including the guide roller 9, or the pressure roller 2a may be provided on the conveyance roller 2. You can also do that. Furthermore, the main shaft 11 may be horizontal, the main shaft 23 may be inclined, and cylindrical rollers may be attached to each of the main shafts 23. (Effects of the Invention) As described above, according to the composite board manufacturing apparatus according to the present invention, it is possible to smoothly transport a composite board that has a step that could not be manufactured with a conventional apparatus and also has an inclined decorative surface part. It has the characteristics that there is no damage to the cosmetic surface and it can be manufactured at high speed. Also,
The horizontal back surface of the composite plate is held and conveyed between the upper roller group arranged on the same horizontal plane and the drive roller that comes into contact with a part of the decorative surface, so even if the foam raw material reacts and foams, it is regulated to a predetermined thickness. However, it has the characteristic of being able to be transported stably. Furthermore, the foam raw material sufficiently reacts and foams between the front and back materials heated by the cure oven, and is transferred to the conveyor roller group and upper roller group without leaking to the outside from between the front and back materials. Since the material is sandwiched in this way, it has the advantage of being able to produce a large amount of composite plates in which the raw material is effectively foamed with a homogeneous foam structure.

[Brief explanation of the drawing]

FIGS. 1 and 2 are a side view and a plan view showing an embodiment of the composite board manufacturing apparatus according to the present invention, and FIGS. 3a and 3b are
is a cross-sectional view taken along line A-A and line B-B in Figure 2,
4a and 4b are cross-sectional views taken along lines C-C and D-D in FIG. A perspective view showing an example of a composite board manufactured by the apparatus, FIGS. 7a and 7b, FIGS. be. 1 ... Conveyance machine, 2, 3... Conveyance roller, 4,
5, 6...Regulation roller, 9...Guide roller, 1
0...Cure oven, 15...Transport roller group,
20...Regulation roller group, 22...Upper roller group.

Claims (1)

[Claims] 1. In an apparatus that continuously manufactures a composite board in which a foam body is integrally interposed between a surface material having a gutter-like cross section and a sheet-like back material with a stepped portion parallel to the longitudinal direction between inclined decorative surfaces, The conveyor roller and side edges that come into contact with the decorative surface of the surface material laminated with foam raw materials,
The cure oven is equipped with a conveyor including a regulation roller that guides the stepped portion, a guide roller that guides the backing material so as to cover the laminated foam raw material, and a cure oven arranged in series with the conveyor. A cylindrical drive roller in contact with one of the decorative surfaces and a cylindrical free roller in contact with the other decorative surface are mounted on a main shaft supported at an angle corresponding to the inclination of the decorative surface. placed in
A lower roller group with the above-mentioned regulating roller interposed between the lower rollers, an upper roller group consisting of a drive roller that corresponds to the roller and horizontally guides the backing material, a heater that heats the inside of the cure oven, and a heated gas. A composite plate manufacturing device comprising: a cover that suppresses leakage to the outside;