JPH0378152B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is a composite board, for example, a composite plate, for example, a foamable synthetic resin is sandwiched between two base materials, and the decorative surface of at least one of the base materials is Printing, uneven patterns, so-called printing to promote design and three-dimensionality, and embossing are performed in two or more steps, and the base material is formed into a gutter shape, and the gutter-shaped portion is foamed. After discharging a synthetic resin raw material, the so-called foamable reaction mixture, other base materials are laminated and fed to a mold, and these constituent materials are integrally bonded while passing through the mold to produce a composite board. This relates to manufacturing equipment. (Prior Art) Embossing of workpieces such as metal sheets, paper, and synthetic resins is well known. One example is an apparatus for embossing a printed or painted workpiece, such as that disclosed in Japanese Patent Laid-Open No. 53-90347. The decorative surface of the thin metal sheet processed with this type of equipment is embossed with a deep uneven pattern in one step, and the decorative coating film that has already been completed is forced to be embossed before embossing. Cracks and peeling often occurred in the coating film at the bends. In addition, with conventional devices of this type, the required embossing process is completed in one step, so it is not possible to form a decorative surface with multiple steps or deep embossed surfaces without cracks, resulting in a simple appearance of an uneven surface, which is insufficient. I was unable to create a three-dimensional effect. Furthermore, there is Japanese Patent Publication No. 58-21584 as an apparatus for manufacturing a composite plate by discharging a foamable synthetic resin raw material between face materials. (Objective of the Invention) The present invention solves the above-mentioned problems by performing multi-stage embossing and printing on the workpiece, and by forming a pattern to enhance the three-dimensional effect on the bent part of the uneven pattern. A workpiece material that has a decorative surface with a concave-convex pattern that is highly weather resistant, highly productive, and has a three-dimensional effect, without cracking or peeling of the decorative coating on the surface, or deforming the pattern due to embossing. Provided is a composite board manufacturing device capable of continuously manufacturing a sanderch panel in which a surface material is used as a surface material, a core material and a back surface material are laminated on the back surface, and these constituent materials are bonded together by the self-adhesive property of the core material. The purpose is to (Structure of the Invention) In order to achieve this object, a composite plate manufacturing apparatus according to the present invention includes a delivery section on which a workpiece made of a sheet-like material such as a thin metal plate is mounted, and a workpiece that is fed from the delivery section. a loop section that stores and always sends out to the next process without strain, a printing section that directly prints an arbitrary pattern consisting of one color or multiple colors on the surface of the workpiece sent out from this loop section, and this printing section. In addition to guiding the workpiece sent out from the section, the first shallow embossing is performed in synchronization with the above-mentioned pattern, and at the same time, the bent part, top surface, and bottom surface of the unfinished uneven pattern formed by the embossing are , a pilot embossing machine that forms a three-dimensional effect-enhancing pattern that becomes a shadow on at least all or part of the side wall using one type of paint, ink, etc.; An embossing machine that embosses a deeper uneven pattern that matches the pattern, a leveler that removes residual distortion that occurs during embossing, and a tension and guide that performs printing, embossing, and distortion correction on the workpiece under tension. A pinch roller, a molding machine that molds the processed material sent out from this roller, the so-called surface material, into a predetermined shape, and a discharge of a foamable synthetic resin raw material that supplies the core material as a raw material to the back side of the molded surface material. A curing oven that laminates a backing material on top of the discharged raw material, forming and curing it with a core sandwiched between the front and backing materials, and a cutter that cuts the continuous strip sent out from the curing oven into regular lengths. It is characterized by its composition. (Function) According to this configuration, the printing unit prints an arbitrary pattern on the decorative surface of the workpiece, and the printed workpiece is guided to the embossing machine by the pilot embossing machine, and the printed workpiece is guided to the embossing machine by the pilot embossing machine. shallowly embossed in accordance with the same pattern, and at least one of the top surface, bottom surface, side wall, and bent portion of the uneven pattern.
It is possible to form a pattern to enhance the three-dimensional effect at certain points. Next, the workpiece formed in this way is embossed with the same pattern more deeply using an embossing machine to match the above-mentioned shallow uneven pattern, and then the workpiece is made uneven by using a leveler. This method removes residual distortion without erasing the pattern, flattens it, and supplies it to the next process. moreover,
The workpiece formed in this way is molded into a predetermined shape, the raw material for the core material is discharged onto it, the backing material is laminated, and these constituent materials are bonded together during the reaction foaming of the raw material to form a composite. A composite plate can be manufactured continuously by forming a plate and cutting it into regular lengths. (Example) Next, an example of the composite board manufacturing apparatus according to the present invention will be described using the drawings. In Figure 1, 1
1 is a sending section, 5 is a loop section, 8 is a printing section, 18 is a pilot embossing machine (hereinafter simply referred to as a front embossing machine), 23 is an embossing machine, 27 is a leveler, 31 is a pinch roller for pulling and guiding,
32 is a molding machine, 33 is a discharge section, 34 is a cure oven, and 48 is a cutter. To explain further,
As shown in FIG. 2, the delivery unit 1 is configured to process a workpiece 2 made of a sheet-like material such as a thin metal plate, such as a surface-treated steel plate, a primer steel plate, an aluminum plate, a copper plate, etc.
One type of paper or synthetic resin is mounted on the uncoiler 3, and the uncoiler 3 is used to feed the uncoiler to the next process via the pinch roller 4. Further, the loop portion 5 is, for example, a third
As shown in the figure, a plurality of rollers 6 are arranged so as to be movable up and down to store the workpiece 2, and function as a relief part to constantly and easily send the workpiece 2 to the next process. It is. Further, the pinch roller 7 is used to reliably feed the workpiece 2 to the printing section 8 , and the printing section 8 is connected to the washing machine 9 and the washing machine 1.
It consists of a stage or multiple stage printing machine 10 and a baking oven 11 provided as necessary, and prints a printed pattern A in one color or in multiple colors, for example, as shown in FIG. 4, on the decorative surface of the workpiece 2. It is printed with . The printing is performed by any one of gravure printing, offset printing, screen printing, letterpress printing, and planographic printing. In addition,
Printing is performed on any decorative surface. An example of one set of the printing machines 10 is a gravure offset printing machine as shown in FIG.
2, Offset roll 13, Plate cylinder 14, Fountain roll 15, Shimeshi roll 16, Doctor 17
It consists of. Further, the front embossing machine 18, as shown in FIG. 6, prints a workpiece 2 on which a printing pattern A as shown in FIG.
an embossing roll 19, an elastic roll 20, a plate cylinder 21, and a fountain roll (not shown), each of which has a pattern identical to the printed pattern A engraved on its outer periphery.
The uneven pattern of the embossing roll 19 is synchronized with the printed pattern A printed on the workpiece 2 through a doctor or the like, and embossing is performed to a depth shallower than the final embossing depth as shown in FIG. 7a. At least part of the top surface, bottom surface, and bent portions of the uneven films B' and C' on the workpiece 2, for example, in FIG.
It is formed using ink or the like. The heaters 22 are arranged as necessary to dry and bake the paint, ink, etc. Further, as shown in FIG. 8, the embossing machine 23 engraves the same pattern of the printed pattern A on the upper and lower male and female embossing rolls 24 and 25, and prints the same pattern on the unfinished workpiece 2. As shown in FIG. 9, the uneven patterns B' and C' are embossed more deeply. In addition, printing machine 1
0, front embossing machine 18 and embossing machine 23
are rolls of the same diameter and rotate synchronously,
A marking device, chain, coaxial shaft, belt, etc. (not shown) are used to prevent misalignment of the printed pattern.
It is controlled by a tuning mechanism 26 such as an electronic control device. The leveler 27 corrects residual strain existing in the embossed workpiece 2. As shown in FIG. 10, the structure is arranged in a zigzag pattern as shown in FIG. This is how it was done. Reference numeral 31 denotes a tension/guide pinch roller, which is mainly rotated faster than the embossing machine 23 , and when the workpiece 2 is pulled (under tension), the front embossing machine 18 ,
It is made to pass through the process of an embossing machine 23 . The molding machine 32 molds the workpiece 2 through multiple stages of rolls as shown in FIGS. (simply referred to as raw materials)
33a is discharged onto the back surface of the molded workpiece 2. In addition, the cure oven 34 is equipped with a backing material 35 and has a supply section 3 that guides it onto the raw material 33a.
6, a roller 37 that guides it, an upper and lower belt, or a roller conveyor (not shown) 38, 3
9, heating devices 40, 41, roller 42 and cover 4
3, a driving wheel 44 and a driven wheel 4 to which the belt is attached.
5 and type 46. Note that in FIG. 12, the parts indicated by one-dot chain lines are detectors, preheaters, etc., and are provided as necessary. In addition, the cure oven 34 has a surface material 2 and a back material 35.
A composite band 47 is produced by interposing the raw material 33a in between and reacting and foaming in a mold 46 to bond them together. In addition, the cutter 48 is a continuous composite band 47.
This is for cutting to a regular length. Next, to briefly explain the operation of the composite board manufacturing apparatus according to the present invention, first, the workpiece 2 made of a primer steel plate attached to the uncoiler 3 of the delivery section 1 is fed to the loop section 5 via the pinch roller 4. be done. At this time, even when the workpiece 2 is pulled by the pinch roller 4, the uncoiler 3 is equipped with a brake device (not shown), so the workpiece 2 is pulled under a certain allowable tension. It is fed to the loop section 5 . The workpiece 2 is then fed from the loop section 5 to the printing section 8 via the pinch roller 7. In the printing section 8 , a printing pattern A as shown in Fig. 4 is printed on the surface of the workpiece 2 using ink, and a transparent resin (acrylic resin) is applied thereon as a clear material, and after this clear has dried, a pre-emboss is applied. is fed to the processing machine 18 , and a concave-convex pattern B' matching the printed pattern A shown in FIG. 4 is formed on the workpiece 2;
C' is formed as shown in FIGS. 7a and 7b, and at the same time, a pattern D for enhancing the three-dimensional effect is attached to its bent portion. Incidentally, the uneven patterns B' and C' at this time are about 80% of the size and depth of the final uneven patterns B and C, so-called ΔW=0.8W, h=0.8H. Also, ΔW, W
is the width of the top surface of the convex pattern C', and h and H are the embossing depths. Next, the workpiece 2 is fed to the embossing machine 23 , and is embossed to a depth as shown in FIG. 9, matching the printed pattern A on the workpiece 2. Note that the embossing on the workpiece 2 at this time is performed with tension applied. Then, the workpiece 2 sent out from the embossing machine 23 is corrected by the leveler 27 in a state in which residual strain during embossing is corrected by the tensioning and guiding pinch roller 31, and then sent to the forming machine 32. and formed as shown in FIG. 11a. Next, a polyisocyanurate foam raw material 33a is discharged from the discharge section 33 immediately after mixing on the back surface of this workpiece 2, and a back surface material 35 made of a sheet-like material such as kraft paper or aluminum foil is laminated thereon. The raw material 33a is fed to the cure oven 34 , where the raw material 33a is reacted and foamed, and the workpiece 2 and the back material 35 are pressed together and molded, and then sent out as a composite band 47 from the outlet.
This is cut into a predetermined shape using a cutter 48 to obtain a composite plate 49 as shown in FIG. Note that when the force relationship between the pinch roller 7 and the tension/guide pinch roller 31 on the workpiece 2 is based on the rotation of the embossing rolls 19, 24, and 25, the rotation of the pinch roller 7 is slow, and the tension/guide pinch roller 31 is The rotation speed of the pinch roller 31 is set to be fast so that the workpiece 2 is embossed and flattened without erasing the uneven patterns B and C while the workpiece 2 is in tension, and residual strain is removed. This is what I did. As a result, the workpiece 2 will no longer become mountain-like, twist, move, or flap at the entrances of the front embossing machine 18 and the embossing machine 23 within the above-mentioned area, and will not shift during embossing. The pattern will no longer be unclear or double-printed. Further, since the leveler 27 is in a state where tension is applied in one direction, it can be easily flattened and residual strain can be easily released. Of course, the tension within the above range is within the range of force that does not change the embossed pattern. In the front embossing machine 18 , it is possible to form the rolls only from steel, and the rolls can also be constructed by sliding the frame vertically and horizontally. Next, a test piece embossed using the above-mentioned apparatus will be compared with a test piece embossed using a conventionally used apparatus. In addition, as for the inspection method, (1) is the apparent number of pekotsuki existing per 1 meter of the workpiece material 2,
(2) The distribution of Pekotsuki, (3) the height difference of Pekotsuki (difference between the bottom and top of the designed irregularities and the actual bottom and top), and (4) the overall appearance. . [Table] (a) Appearance at the bent part of the uneven pattern,
(b) Change in uneven pattern, (c) Three-dimensional effect.
Furthermore, in terms of weather resistance, conventional workpiece materials
Although cracks and blisters were observed in the coating film during the 1,500-hour salt spray test, these were not observed at all when processed using the composite board manufacturing apparatus according to the present invention. In addition, since the process from forming the surface material to the composite board was formed on an integrated line, the composite board was produced continuously. (Effects of the Invention) According to the composite board manufacturing apparatus according to the present invention, since the embossed patterns of the printed patterns are processed to match,
A three-dimensional effect is promoted. Immediately after heating, embossing is performed in two or more stages, so even if deep embossing is performed, the coating will not crack or peel off. By using multiple stages of embossing rolls, it is possible to form an uneven pattern with steep angles. It has little residual distortion and can be easily corrected with a leveler. During embossing, it is possible to print or paint a three-dimensional effect on any part of the uneven pattern, so the three-dimensional effect is greatly enhanced due to the cubic synergistic effect. The lines are arranged in a straight line and the mechanism does not apply unreasonable force to the workpiece, allowing for smooth and high-speed embossing.
Since the inside of the mold is sealed, heat retention is improved,
It has the characteristic of reducing the leakage of harmful gases and combustion gases into the working environment, greatly improving worker safety and hygiene. Since a base material formed into a gutter shape is used, no side molding material is required. printing, embossing,
It is possible to continuously supply the raw material for the core material to the back side and to stack the base materials, so it is possible to do this at low cost.
It can be produced homogeneously and in large quantities. It has the following characteristics.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing an example of a composite board manufacturing apparatus according to the present invention, FIGS. 2, 3, 5, and 6.
8 and 10 are explanatory diagrams showing specific examples of each part of the above-mentioned apparatus, FIG. 4 is a plan view showing an example of a printed pattern, and FIGS. 7 a and b are formed by a pilot embossing machine. 9 is an enlarged end view showing a part of the completed uneven pattern, FIG. 9 is an explanatory view showing an enlarged part of the completed uneven pattern, FIG. 10 is an explanatory view showing an example of a leveler, and FIGS. 11 a to r 12 is an explanatory view showing an example of molding a workpiece, FIG. 12 is an explanatory view showing the equipment before and after the cure oven, and FIG. 13 is a perspective view showing an example of a composite plate manufactured by the apparatus according to the present invention. be. 1 ... Delivery section, 5 ... Loop section, 7 ... Printing section, 18 ... Pilot embossing machine, 23 ...
... Embossing machine, 27 ... Leveler, 32 ... Molding machine, 34 ... Cure oven, 48 ... Katsuta, A ... Print pattern, B', C', B, C ... Uneven pattern, D ... Three-dimensional A pattern for promoting emotion.

Claims (1)

[Claims] 1 Workpiece material consisting of a sheet-like material such as a thin metal plate 2
A delivery section 1 equipped with a feed-out section 1, a loop section 5 that stores the workpiece 2 fed from the delivery section 1 and always sends it out to the next process without difficulty, and a workpiece 2 sent out from the loop section 5 . A printing section 8 directly prints an arbitrary pattern of one color or multiple colors on the surface of the paper, and a printing section 8 that guides the workpiece 2 sent out from the printing section 8 and prints the first pattern in synchronization with the above pattern. At the same time as shallow embossing is performed, a pattern to enhance the three-dimensional effect that creates a shadow on at least part of the bent portion, top surface, bottom surface, and side walls of the unfinished uneven pattern formed by the embossing is applied with one type of paint, ink, etc. a pilot embossing machine 18 for forming a pattern, an embossing machine 23 for embossing a deeper uneven pattern on the workpiece sent out from the pilot embossing machine 18 in accordance with the emboss pattern, and a chemical processing machine 23.
A leveler 27 arranged after the leveler 27 and a tension/guide pinch roller 31 arranged at the outlet of the leveler 27 .
, a molding machine 32 that molds the workpiece 2 fed from the roller 31 into an arbitrary shape, and a discharge unit 33 for a foamable synthetic resin raw material that discharges the raw material state onto the back surface of the molded workpiece 2. A curing oven 34 that laminates a backing material on the raw material discharged onto the workpiece 2 and cures the raw material in a sandwiched state between the backing material and the workpiece 2, and a composite strip delivered from the curing oven 34 . and a cutter 48 for cutting the composite board into a regular length.