JPH0564082B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention involves embossing a surface material, such as a thin metal plate, and then discharging a foamable synthetic resin raw material between the formed surface material and back material. This invention relates to a composite plate manufacturing apparatus that continuously forms sandwich structural plate bands by reacting and foaming raw materials in a moving mold, and then cutting them into regular lengths to continuously manufacture composite plates. [Prior Art] This type of device has a structure as shown in Japanese Patent Publication No. 17675/1983. In other words, the above-mentioned apparatus includes a delivery section for a coiled metal plate, a molding machine that forms the metal plate into an arbitrary shape, a discharge section that discharges the foamable synthetic resin raw material onto the back surface of the formed metal plate, and a A curing oven that transfers the raw material with it interposed between the back material supplying machine and the front and back materials, foams and molds the raw material, and delivers the raw material after the apparent foaming is almost completed; It consisted of a fed-out traveling cutter and a secondary forming machine installed as needed. [Problems to be solved by the invention] However, this device is a device that manufactures metal plates wound into a coil with a length of 3000 m one by one, and cannot continuously produce composite plates. . Therefore, in order to increase productivity, it is necessary to turn the line on and off every time the coil is replaced, and there is also the disadvantage that the beginning and end of the composite belt may be defective. [Means for Solving the Problems] In order to eliminate such drawbacks, the present invention provides two surface material delivery sections for delivering surface materials such as metal plates, above and below, or in front and back, and The surface material attached to one of these delivery sections is processed by each embossing machine, and just before one coiled surface material is used up, the surface material that was being fed from the other surface material delivery section is processed. The starting end of the material is polymerized and connected to the terminal end of the surface material via a connecting machine, while a loop section is provided in front of the primary forming machine so that the line after the primary forming machine does not stop during this time, and the running This is a composite plate manufacturing apparatus in which a continuous composite strip is fed to a direction changing machine via a secondary forming machine provided as necessary after the cutter, and then transported to a packaging line. [Function] In the composite plate manufacturing apparatus according to the present invention, the surfacing material delivery section is composed of an uncoiler and a pinch roller in order to continuously feed the surfacing material at a constant speed, and the coupling machine is configured to feed the surfacing material at the end of the surfacing material. In a polymerized state, several parts are instantly fixed in positions that will not interfere with the primary forming machine, and the surface material is continuous, so that the surface material is fed to the primary forming machine without stopping when connected. A loop portion is provided in the wafer, and the backing material wound into a coil shape is instantly bonded and fed, thereby making it possible to continuously manufacture composite plates. Also,
The embossing machine embosses the surface material before the connection process, so that the connection part does not adversely affect the processing machine during embossing of the surface material. [Example] An example of the composite plate manufacturing apparatus according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic configuration diagram of the above-mentioned device, where 1 is two surface material delivery parts arranged front and back as shown in FIG.
For example, this device is composed of an uncoiler 2 equipped with a thin metal plate and a pinch roller 3, and continuously feeds the surface materials A and A' to the next process under constant tension. Reference numeral 4 denotes two embossing machines, which are composed of upper and lower embossing rolls 5 and 6 of male and female structure, a leveler 7, and a preheater 8 provided as necessary. In addition,
The embossing rolls 5 and 6 are cylinders or cylindrical bodies with arbitrary uneven patterns engraved on the outer periphery, and the uneven patterns are fitted like male and female shapes to form a 0.3
It embosses an uneven pattern with a depth of about 1.0 mm at a speed of 5 to 40 m/min. The preheater 8 is effective in softening the coating film of the surface material A and preventing cracks from appearing during embossing. The temperature varies depending on the plate of surface material A, the temperature characteristics of the coating film, the depth of the uneven pattern, and the pattern. In particular, since distortion tends to appear on the decorative surface in embossing, the surface material A is stretched and the embossing is instantaneously performed on the same parallel line using a perfectly circular embossing roller. 9 and 10 are guide parts in which a plurality of rollers 11 are arranged in a ladder shape, and
Guide pieces 12 are provided on both sides with a width slightly wider than the width of the surface material A. Note that the guide section 10
In this example, a pressing roller 13 is provided to prevent the surface material A' from separating from the guide portion 10 . Reference numeral 14 denotes a coupling machine, which is composed of a coupling blade 15 and a stopper portion 16, as shown in Japanese Patent Publication No. 58-58232, for example. 17 is a loop part with surface material A or
A' is stored, and the purpose is to supply the surface material A to the primary forming machine 18 without stopping even at the moment when the surface materials A and A' are connected. . The primary forming machine 18 is a surface material A,
This is an apparatus for forming A', for example, as shown in FIGS. 3a to 3d. 19 is a discharge machine, for example, Fig. 4 a to d.
As shown in the figure, the spray gun 19a and the nozzle 19
b, a mixer 19c, and a foamable synthetic resin raw material (hereinafter simply referred to as raw material B);
For example, polyurethane foam, polyisocyanurate foam, phenol foam is used as surface material A,
Alternatively, it is a device for supplying back material C, or between the front and back materials A and C by spraying or the like.
Reference numeral 20 denotes a backing material feeder, which has two uncoilers 21 installed in parallel as shown in FIG. The pressure roller 23 is separated as shown in the figure except when pressing. Of course, the backing material C can also be arranged as shown in FIG. 5b. 24
A guide roller is used to guide the back material C to a predetermined position on the surface material A. Reference numeral 25 denotes a spreading machine, which has rollers 25a arranged side by side on a slope as shown in FIGS. Note that the spreading method may be such that the distance Δt between the front and back materials A and C changes from small to large, or from large to small. 26 is a curing oven in which raw material B is reacted and foamed with raw material B interposed between surface material A and back material C as shown in FIG. Continuous composite band D as a core material (hereinafter simply referred to as composite band D)
This is a device for manufacturing. Its composition is steel, rubber,
Endless upper and lower mold members 27 and 28 made of one or more types of nonwoven fabric are faced to each other with the thickness of the composite band D to continuously form a mold 29, and this mold 29 is continuously dissolved after a certain period of time has passed. It is a device that repeats the process. Further, on the back surfaces of the upper and lower mold members 27 and 28, a back up roller 30 is provided.
heater 31, cover 32, exhaust port 3
3 and 34, the heater 31 is the upper and lower mold material 2.
7,28 can be heated to about 30-110℃, cover 3
Reference numeral 2 is provided with exhaust ports 33 and 34 for preventing the hot air inside the cure oven 26 from coming out into the working environment and for releasing combustion gas to the outside air. Of course, when curing with steam, no combustion gas is present in the curing oven 26 , so only the blowing agent and water vapor are exhausted from the exhaust ports 33 and 34. Of course, the upper and lower mold members 27 and 28 may be a steel belt, a belt made of non-woven fabric, or a heat-resistant rubber belt, and the lower mold member 28 may be a Catapira (registered trademark), a roller, or the upper and lower mold members 27,
28 may be arranged in reverse, or the rollers may be placed on the upper and lower mold material 2.
7 and 28, or a belt is wound around these rollers. 35
The rotational speed of the lower mold material 28, the moving speed of the composite band D, or both speeds are measured with a measuring device, and the composite band D is cut into a predetermined length using a traveling cutter 36. The traveling cutter 36 cuts the composite band D in a direction perpendicular to the traveling direction with a rotary saw blade, or with a cutter mechanism that combines a guillotine, a comb blade, and a rotary cutter. 3
7 is a secondary forming machine for finally forming the composite plate D' as shown in Fig. 7 a to c, and the surface material A as shown in Fig. 3 c and d is , b. Reference numeral 38 is a direction changing device for transferring the composite plate D' to the stacking section 39, which rotates the composite plate D' by 90 degrees using a ladder-shaped conveying roller and one end as a fulcrum, and returns it repeatedly using an air cylinder or the like. It consists of a
Reference numeral 40 denotes a device for packing 5 to 10 composite plates D' at a time in a packing section. Next, a method for manufacturing a composite board using the apparatus according to the present invention will be briefly explained using FIG.
Now, as surface material A, we are using a thin metal plate with a thickness of 0.27 mm (width 94 mm).
cm) was wound on a bobbin for 3000 m and set in uncoiler 2. On the other hand, the backing material C is made of asbestos paper laminated with aluminum foil.
Back material supply machine 2 that feeds out a coiled material with m turns
Prepared to 0. As raw material B, it is assumed that polyurethane resin is supplied to the discharge machine 19, that the upper and lower mold members 27 and 28 consisting of conveyor belts rotate at a speed of 30 m/min, and that the inside of the cover 32 is maintained at 80°C. . Therefore, surface material A is uncoiler 2,
It is fed to a pinch roller 3 and an embossing machine 4 . In the embossing machine 4 , the surface material A is heated to approximately 30 to 80°C by a preheater 8, and is fed between the upper and lower embossing rolls 5 and 6, and then delivered to the leveler 7 to form an arbitrary pattern of 30 m. Emboss at a speed of /min. At this time, the surface material A is embossed while being stretched between the pinch roller 3 and the leveler 7. The embossed surface material A is fed to the primary forming machine 18 via the coupling machine 14 and the loop section 17, where it is formed as shown in FIG. Nozzle 19b as shown in a
Dispense unfoamed polyurethane foam raw material B in a wide width and film form either facing the direction of movement of the surface material A or following it,
The backing material C is placed on the discharged raw material B by the guide roller 2.
4. The sheets are laminated via a spreading machine 25 and sent to a cure oven 26 . In the cure oven 26 , the front and back materials A and C are transported, raw material B is reacted and foamed, and the void between the front and back materials A and C is filled and molded with foam to complete the apparent foaming. The composite band D is sent out from the outlet. This is cut into a fixed length using a traveling cutter 36, and then the secondary molding machine 3
Divide it in half at step 7 and bend the ends to obtain the final product. This is conveyed, reversed through the direction changer 38, and transferred to either the left or right direction, sent through the stacking section 39 to the packing section 40, and multiple composite plates D' are packed in cardboard or the like. It is completed by When the feeding of the surface material A approaches the end, the surface material A' that has already been prepared is passed through the pinch roller 3, the embossing machine 4 disposed above, the guide section 10 , and the presser roller 13 in this order. At the same time, the V-shaped connecting blade 15 is instantly dropped and pushed up, and at the same time, the stopper part 16 is pressed down. The roller 16a also works together with the back up roller R to pinch the end portion of the surface material A other than the overlapping portion, thereby stopping the transfer. Of course, at this time, the presser roller 16a is used for the surface material A,
The clamping of the surface material A is released at the same time as A' is connected. Note that there is a speed difference between the steps before and after the loop portion 17, and the surface material A or
A' is set so that it is always looped in the loop section 17. When one coiled backing material C approaches the end, tape material E is pasted to the starting end of the other backing material C', and this portion is instantly activated by pressing roller 23 to remove backing material C,
C' is stuck together and fed continuously to the guide roller 22. Note that the surface materials A and A' are wound on the uncoiler 2 with their decorative surfaces facing up, or with their decorative surfaces facing up. This is determined depending on whether the cross-sectional shape sent out from the primary molding machine 18 is concave or square. Although not shown, a cutter and a detector (light, electricity, magnet) can also be installed at any location. Furthermore, as shown in FIG. 8, the cure oven 26 is divided into a molding part 26a and a curing part 26b, and the molding part 26a is a combination of steel belt type, Catapira (registered trademark name) type, roller type, and curing part 26b. is a roller type or something like a belt wrapped around a roller, and the temperature is either the same on both sides or there is a temperature difference (high -
(low). Particularly, with this configuration, the molding part 26a can be set to a considerably shorter length than before, and the cure part 26b is smaller than the molding part 26a and can be produced at a lower cost. Also,
A preheater F may be provided to heat the raw material B of the surface material A and the back surface material C before they come into contact with each other. As mentioned above, according to the composite plate manufacturing apparatus according to the present invention, since the front and back materials can be fed continuously, it is possible to operate all day long, and there is no need to turn on and off each coil as before. Approximately 40% more than when
It has the feature of improving the position utilization rate. Only 2 to 3 defective products are produced at the beginning and end of the work day, which is a significant reduction compared to before. It has the advantage that the surface material flows in a straight line, and there is no deformation due to bending or twisting, allowing for smooth conveyance, molding, etc.
It is easier to attach heavy surface materials to the uncoiler than before, has less danger, and is highly efficient. After molding, surface material A is heated to 50 to 90°C and filled with raw material B to be foamed and hardened.
In order to foam the surface material A, the deformation and distortion of the surface material A are somewhat corrected by the above-mentioned temperature and foaming pressure, and dimensional changes are suppressed. By surrounding the mold with a cover, heat retention is improved, and leakage of harmful gases and combustion gases into the working environment is reduced, greatly improving worker safety and hygiene. Since the surface material is formed into a gutter shape, there is no need for side molding materials. It is possible to form any embossed pattern on the decorative surface of commercially available surface materials, such as surface-treated steel plates such as colored steel plates, aluminum plates, copper plates, etc., and it also has the characteristics of being able to immediately produce composite plates with a high design quality. Since embossing can be applied only to the required width of the surface material, distortion and deformation of the surface material can be minimized. Immediately after embossing, it is formed into a gutter shape, allowing strain and deformation caused by embossing to escape in the width and length directions, thereby reducing dimensional deformation, unevenness, etc. due to residual strain. Since the embossing machine is installed in two lines in front of the surface material coupling machine in the integrated line, it has the feature that production can be carried out smoothly without any hindrance to the embossing machine in the surface material coupling machine.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing the configuration of an embodiment of the composite plate manufacturing apparatus according to the present invention, Fig. 2 is an explanatory diagram showing the surface material delivery section and the embossing machine, and Fig. 3 a
- d are explanatory diagrams showing examples of molding of the surface material, Fig. 4 a -
d is an explanatory diagram showing the discharge machine and its discharge state; FIGS. 5 a and b are explanatory diagrams showing the supply state of the backing material; FIG. 6 is a schematic diagram of the structure of the cure oven and the running cutter portion; FIGS. 7 a to c is a sectional view showing an example of a composite board,
FIG. 8 is an explanatory diagram showing another embodiment of the cure oven. 1 ... Surface material delivery section, 14 ... Connecting machine, 17...
...Loop section, 19...Discharge machine, 20...Back material supply machine, 25...Spreading machine, 26 ...Cure oven, 29...Mold, 36...Traveling cutter.

Claims (1)

[Claims] 1. Two surface material delivery units arranged one above the other or one above the other, two embossing machines that process arbitrary patterns on each coiled surface material delivered from the delivery units, and a machine that processes the embossed surface material. A connecting machine that instantaneously connects the ends of the coil, a loop section that stores the surface material, a primary forming machine that forms the surface material into an arbitrary shape, and a self-containing machine that attaches to the back side of the surface material fed from the molding machine. A discharge machine that supplies a foamable synthetic resin raw material, which is a raw material for a synthetic resin foam having adhesive properties, and a 2 that continuously supplies a backing material that covers the discharged raw material.
a mold for continuously transferring the foamable synthetic resin raw material in a sandwiched state between the surface material and the back material, facing each other at a predetermined interval; and the back surface material. A guide roller that guides the back material to be laminated at a predetermined position on the surface material is provided between the material delivery section and the mold entrance, and a space containing the mold is provided.
A synthetic resin foam is integrally interposed between the cover, which can be heated to 30 to 110℃, and prevents the gas in the space from leaking to the outside from other than the exhaust port, and the mold material, or the front and back materials. 1. A composite board manufacturing apparatus comprising: a measuring device for measuring the moving speed of a continuous composite strip; and a traveling cutter that instantaneously cuts the continuous composite strip into a fixed length.