JPS5938902B2 - sandwich board manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sandwich board manufacturing apparatus in which a core material made of a foamable reaction mixture having self-adhesive properties is integrally interposed between two base materials such as front and back materials.

Recently, embossing has been used as a method to meet the demands for the design of interior and exterior materials of buildings. However, since this embossing process is carried out by coil manufacturers after the coil is manufactured, not only does the volume of each coil increase, but the surface is damaged during winding, causing problems such as rust. . In addition, when using a foamable reaction mixture, for example, a synthetic resin raw material such as polyurethane resin, the formation of the foam involves a chemical reaction that is greatly affected by various factors such as temperature, so it is necessary to set uniform conditions and have a certain degree of temperature change. It was hoped that a device would emerge that could handle this. Furthermore, when manufacturing sandwich boards using this type of raw material, the raw material is discharged only onto either the facing surface of the front or back material, and another surface material is laminated during the reaction and foaming. It was a device that was a method of integration. The adhesion strength of this type of raw material varies greatly depending on the state of reaction and foaming, so the surface material laminated later may peel off from the core material after foaming, or the spreading of the raw material may differ from the reaction or foaming timing. There was a drawback that the sagging caused areas where no core material was present, so-called boards, which could be seen even when viewed from the face material side. In order to eliminate such drawbacks, the present invention provides an embossed pattern at the time of manufacturing the sandwich board, and
Sandwich board manufacturing equipment that simultaneously brings the base material and the foaming reaction mixture into contact with each other to significantly improve adhesion and reduce board size, making it possible to mass-produce sandwich boards with a uniform foam structure at low cost and on a batch line. It provides:

EMBODIMENT OF THE INVENTION Below, one Example of the sandwich board manufacturing apparatus based on this invention is demonstrated in detail using drawing.

FIG. 1 is a schematic configuration diagram of the above-mentioned apparatus, and 1 is a lower base material delivery section, which is composed of an uncoiler 2 and a pinch roller 3 equipped with a thin metal plate, which is the so-called lower base material A. This is for attaching A and continuously feeding it to the next process. To explain further, the uncoiler 2 is for mounting the lower base material A, and the pinch roller 3 is for feeding the lower base material A at a constant speed and serving as a guide section.
Reference numeral 4 denotes an embossing machine, which has a configuration in which upper and lower rolls 5 and 6 are supported according to the thickness of the lower base material A and the depth of unevenness, and the outer peripheral surfaces of the rolls 5 and 6 are provided with mutually biting parts. It has a matching uneven pattern.

7 is a foamable reaction mixture P (having self-adhesive properties) at the discharge part.
Hereinafter, the mixture (hereinafter simply referred to as a mixture) is sprayed using either an air or an airless spray gun so that it adheres to the opposing surfaces of the lower substrate A1 and the upper substrate B at the same time.

To explain further, the spray gun is arranged at an angle such that the total discharge amount of the mixture P is 1/2 and adheres to the opposing surfaces of the upper and lower substrates A and B, and the sprayed mixture P is ,
This is to prevent the mixture P from adhering to surfaces other than the lower substrates A and B, and to averagely adhere the mixture P to the opposing surfaces of the upper and lower substrates A and B. 8 is an upper base material delivery section where an upper base material B such as asbestos paper, aluminum foil, plastic sheet, asphalt felt,
A composite sheet material made by laminating one or more of these materials is laminated, and a detector is installed to detect the presence or absence of the upper base material B, and the upper base material B draws a slope-like trajectory toward the entrance of the mold to be described later. A group of guide rollers 1 that guide the
It is composed of 2.

To explain further, the upper base material B is attached to an uncoiler (not shown), and the presence or absence of the upper base material B is detected by one of electricity, light, tension, and magnetism, and the signal is detected. The configuration is such that the discharge section 7 is stopped by.
In addition, as an example of the detector 1, a plurality of phototubes 10 corresponding to the entire width of the upper base material B are disposed intermittently on a straight line, and photodetectors 11 are disposed correspondingly on the opposite surface thereof. , its output end is connected to a switch for operating the discharge section 7, and the supply of the mixture P is immediately stopped when the upper base material B is cut or the like. The guide roller group 12 also guides the upper base material B onto the lower base material A, and also adjusts the timing for the upper base material B to contact the mixture P depending on the state of the mixture P. It has the function of averaging the dispersion unevenness and preventing scattering of the dispersion. Its structure consists of a plurality of guide rollers and rollers, for example, arranged so that the locus of the upper base material B draws a slope as shown in FIG. A void is formed in front of the mold described below, and the mixture P is placed on top of the mold.
It is configured so that it adheres evenly and simultaneously to the opposing surfaces of the lower substrates A and B. [ ] is the upper and lower base material A of the mold
, B to convey the mixture P with it interposed between them, react and foam the mixture P well, and form it into a sanderch plate S having a predetermined thickness. Specifically, for example, a steel belt or a caterpillar is engaged between the driving wheels 14, 15 and the driven wheels 16, 17, and then the lower die member 1
Reinforcing rollers 20, 21 are arranged on the back surfaces of the reinforcing rollers 8, 19, and heating devices 22, 23 are arranged on the back surfaces of the reinforcing rollers 20, 21. To explain further, the reinforcing rollers 20, 2
1 prevents the upper and lower mold members 18, 19 from deforming due to the foaming pressure of the mixture P; heating devices 22, 23;
is useful for keeping the inside of the mold at a temperature of 50 to 90°C, completing the reaction of the mixture P within a predetermined time, and exhibiting predetermined physical properties. 24 uses a cover to keep the inside of the mold warm and to prevent the release of trichloromonofluoromethane released during the reaction of mixture P, or carbon dioxide gas, carbon monoxide, etc. released from the heating device into the working environment for safety and hygiene reasons. ,
And, this is to obtain a more effective heat retention effect.

Next, the operation of the apparatus according to the present invention will be briefly explained together with the method for manufacturing a sanderch board.

Now, as the lower base material A, a colored steel plate having a thickness of 0.277 Bm and a width of 940 cm and a length of 1000 meters is wound around a bobbin and is attached to the uncoiler 2. On the other hand, as the upper base material B, asbestos paper laminated with aluminum foil was wound 2000 m into a coil shape and prepared for an uncoiler. Then, polyurethane resin (liquid temperature 20°C) was supplied as the mixed reactant P serving as the core material to the discharge part 7 (spray gun), and the upper and lower mold members 18 and 19 were
Assume that the cover 24 is rotated at a speed of /Gil, and the inside of the cover 24 is maintained at 50°C. Then, the starting end of the lower base material A is guided to the embossing machine 4 via the pinch roller 3.
The spray gun is supported on an extension line of the center line of the angle between the upper and lower base materials A and B. Next, embossing machine 4
Then, a pattern as shown in FIG. 2 is continuously applied to the lower base material A, and the lower base material A is sent to the next process. On the other hand, the upper base material B is the detector 1
through the guide roller group 12 to the entrance 12a of the mold 1
are guided by. Therefore, when the lower base material A reaches the discharge range of the discharge part 7, the polyurethane resin raw material mixed with the components is sprayed from the spray gun into the gap with the sloped cross section formed by the upper and lower base materials A and B. The discharged mixture P is discharged so that most of the discharged amount adheres to the opposing surfaces of the upper and lower substrates A and B at a ratio of about 1:1. Then, the discharged mixture P reacts with the upper and lower substrates A.
, B are fed to the mold L3 at the time when foaming starts from the opposing surfaces of the foams to the opposing surfaces of the molds L3. In the mold [3], the polyurethane resin is kept warm until the so-called cream time → gel time → rice time is completed, and during that time it is molded into a predetermined shape that matches the mold. Of course, at this time, the base materials A and B are fixed together by the self-adhesive properties of the polyurethane resin. Then, it is continuously sent out as a sandwich plate S from the outlet of the above-mentioned mold 1, and is cut into a predetermined length by various means. What has been described above is only one embodiment of the sandwich plate manufacturing apparatus according to the present invention, and as shown in FIG.
It is also possible to provide side mechanisms λ5 as shown in FIG. 4 on both sides of the open end of the mold member 9 to prevent the mixture P pressed by the upper and lower mold members 18 and 19 from leaking to the outside. .

That is, an endless belt (made of rubber, coated with a releasable material) 26 is driven and engaged between driven wheels 27 and 28,
It is formed to rotate in synchronization with the rotation of the upper and lower die members. Of course, although not shown, a plurality of rolls may be arranged and the sheet material may be wound and rotated thereon. Furthermore, it is also possible to provide a preheating means at the position indicated by the two-dot chain line in FIG. 1, thereby increasing the temperature of the upper and lower substrates A and B, thereby favorably affecting the reaction of the mixture P. . As described above, according to the sandwich board manufacturing apparatus according to the present invention, approximately 1/2 of the discharged amount of the mixture is deposited on the opposing surfaces of the upper and lower base materials 5 and fed to the mold. The adhesion between the upper and lower base materials and the mixture serving as the core material is good, and the core material and the upper and lower base materials do not peel off.

8. Any embossed pattern can be continuously formed on the decorative surface of commercially available base materials, such as surface-treated steel plates such as colored steel plates, aluminum plates, copper plates, etc., and it can be fed to the next process without being wound up. It has the characteristics that there is little damage to the decorative surface and there is no need to coil it.

Since the mixture is first attached to the upper and lower substrates, even if a board occurs in the center of the core material, it will not be exposed and has the advantage of good yield. Since all four materials are manufactured on a straight line, the product can be produced uniformly and in large quantities at low cost.

Since the inside of mold 5 is sealed, it improves heat retention and reduces leakage of harmful gases and combustion gases into the working environment, greatly improving worker safety and hygiene.

1 detector, there is no need to stop the device due to foamable reaction mixture adhering to the mold, etc., and there is an advantage that the device can be operated with peace of mind.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram showing one embodiment of the sander-chip board manufacturing apparatus according to the present invention, Fig. 2 is a perspective view showing an example of an embossed pattern, and Fig. 3 is a longitudinal cross-section of main parts showing another embodiment of the above-mentioned apparatus. The top view and FIG. 4 are perspective views showing an example of the side mechanism. DESCRIPTION OF SYMBOLS 1... Lower base material delivery part, A... Embossing machine, 7... Discharge part, 8... Upper base material delivery part, L3. ...Type, A...Lower base material, B...Upper base material.

Claims (1)

[Claims] 1. A lower base material delivery unit consisting of an uncoiler that attaches the lower base material and a pinch roller that transports the lower base material from the uncoiler to the next process, and upper and lower rolls to form irregularities in an arbitrary pattern on the lower base material. an embossing machine that embosses the embossing by interlocking them; a discharge unit that supplies a foaming reaction mixture having self-adhesive properties to the back surface of the lower base material; , Repeat the process of continuously forming voids with the upper base material delivery part to be laminated and continuously dissolving them after a certain period of time, sandwiching the foamable mixture between the upper and lower base materials, and heating. , a mold that moves in a certain direction while pressurized, and a cover that covers a space containing the mold and seals it so that almost no gas in the space leaks to the outside, and the upper base material delivery section has a plurality of A guide roller is disposed so that the upper base material traces a sloped trajectory toward the mold entrance, and the discharge section discharges fluid into a gap having a sloped cross section formed by the upper and lower base materials. 1/2 of the total discharge amount of the foamable reaction mixture is applied to the opposing surfaces of the upper and lower substrates, respectively.
A sandwich board manufacturing device characterized in that the device is arranged at an angle such that the adhesion occurs at a rate of .