JPS60244369A - Apparatus for preparing panel provided with decorative surface having embossed pattern - Google Patents

Abstract

PURPOSE:To obtain a panel rich in three-dimensional feeling and having a film free from cracks, by applying multi-stage emboss-processing, printing and a three-dimensional feeling promoting pattern to the bent part of an embossed pattern of a sheet like material to be processed while feeding out the processed material before applying roll molding thereto. CONSTITUTION:A material to be processed, for example, a thin metal plate 2 is fed to a printing part 8 from a feed-out part 1 through a loop part 5 and a pattern A is printed on the surface of the plate 2 and a clear coat is applied thereto. Next, the plate 2 is sent to an emboss-processing machine 18 to receive shallow emboss-processing of embossed patterns B', C' coincided with the pattern A and, at the same time, a three-dimensional feeling promoting pattern D is adhered to the bent part of the plate 2. Next, the plate 2 is backed and dried, and sent to an emboss-processing machine 23 to receive the deep emboss-processing of embossed patterns B, C in the same way as mentioned above. The printer 10 and the processing machines 18, 23 are regulated by a tuning mechanism 26 so as not to generate non-coincidence between patterns. Subsequently, the plate 2 is fed out by pulling pinch rollers 31 through a leveller 27 and receives roll molding by a molding machine 32 to be formed to a panel.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention applies printing, painting, and embossing to the decorative surface of a workpiece made of a sheet-like material such as a thin metal plate, paper, or synthetic resin. The present invention relates to a manufacturing apparatus for a panel having a decorative surface with a concavo-convex pattern, which manufactures a processed material having a decorative surface with a more three-dimensional effect.

(Prior Art) Embossing of workpieces such as metal sheets, paper, and synthetic resins is well known. For example, there is an apparatus for embossing a printed or painted workpiece, such as that disclosed in Japanese Patent Application 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 paint film at the bends. In addition, with conventional devices of this kind, the required embossing process is completed in one step, so it is not possible to form a decorative surface with multiple steps, a decorative surface with no cranks, and deep embossments, resulting in a mere uneven surface appearance, which is insufficient. It was not possible to create a three-dimensional effect. Furthermore, since the embossing is recoiled and re-molded after embossing, excessive force is applied during recoil, transportation, and unpacking, which has the disadvantage of causing cracks and scratches on the decorative surface.

(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. The decorative coating on the parts does not crack or peel off, or the pattern is deformed due to embossing, and the decorative surface has an uneven pattern that is weather resistant, productive, and has a three-dimensional effect. This invention was invented for the purpose of providing a panel manufacturing apparatus (hereinafter simply referred to as a panel manufacturing apparatus) that continuously forms a workpiece into a predetermined shape using a workpiece having no surface cracks.

(Structure of the Invention) In order to achieve this object, the panel 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 the material and always sends it 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 the loop section, and In addition to guiding the workpiece sent out from the printing section,
A first shallow embossing process is performed in synchronization with the above pattern, and at the same time, a three-dimensional shape that becomes a shadow on at least all or a part of the bent part, top surface, bottom surface, and side wall of the unfinished uneven pattern formed by the embossing process. Paint the pattern to enhance the feeling,
A pilot embossing machine that forms with one type of ink, etc., a heater that dries the pattern to enhance the three-dimensional effect applied to the workpiece sent out from the pilot embossing machine, and the workpiece sent out from the heater. an embossing machine for embossing a deeper uneven pattern in accordance with the embossed pattern, a leveler arranged after the above-mentioned processing machine, and a tensioning pinch roller arranged at the exit of the embossing machine, and
This machine is characterized by being comprised of a printing section, a biloft embossing machine, a synchronization mechanism for synchronizing the embossing machines, and a molding machine for molding a workpiece into a predetermined shape.

(effect) According to this configuration, for the decorative surface of the workpiece.

An arbitrary pattern is printed in the printing section, and the printed workpiece is guided to the embossing machine by the Viloft embossing machine, where it is shallowly embossed to match the same pattern as above, and the uneven pattern is top, bottom, side walls,
A pattern for promoting a three-dimensional effect is formed at at least one part of the bent part. Next, the workpiece thus formed is embossed with the same pattern more deeply by an embossing machine in accordance with the above-mentioned shallow uneven pattern,
A leveler removes residual strain from the workpiece without erasing the uneven pattern, flattens it, and sends it to the molding machine.In order to carry out such processing under tension, a pinch roller is used to pull the workpiece to flatten it and flatten it without erasing the uneven pattern. This makes it possible to manufacture panels with reduced distortion.

(Example) Next, an example of the panel manufacturing apparatus according to the present invention will be described using the drawings. In Fig. 1, the upper part is the delivery section;
l is the loop section, 7 is the pinch roller, the main is the printing section, ■ is the pilot embossing machine (hereinafter simply referred to as the front embossing machine), 22 is the heater, kawa is the embossing machine, 26 is the tuning mechanism, r is the leveler , 31 is a tensioning pinch roller;
32 is a molding machine.

To explain further, a workpiece 2 made of a sheet-like material such as a thin metal plate, such as a surface-treated steel plate, a primer, a steel plate, an aluminum plate, a copper plate, paper, or a synthetic resin, is attached to the uncoiler 3 on the delivery part. This is for feeding this to the next process via the pinch roller 4. In addition, as shown in FIG. 3, for example, Loop Tori stores the workpiece 2 by arranging a plurality of rollers 6 so that they can move up and down, and always sends the workpiece 2 to the next process without difficulty. It functions as a relief part for To explain further, the printing section l
It consists of a washing machine 9, a printing machine 10, a top clear coater 11, and a baking oven (not shown), which are provided as necessary. In particular, the printing machine 10 may be composed of one stage or multiple stages. be. The printing department prints, for example, a pattern A as shown in FIG. 4 on the decorative surface of the workpiece 2 in one color or in multiple colors. The printing is performed by any one of gravure printing, offset printing, screen printing, letterpress printing, and lithographic printing. Note that printing is performed on any decorative surface. An example of one set of the printing press 1o is a gravure offset printing machine as shown in FIG. It is. The entire printing unit 1 is placed on a frame, and the positional relationship with the front embossing machine J can be finely adjusted in units of 0.1 m. In addition, for the front embossing machine, in addition to guiding the workpiece 2 on which the pattern A shown in Fig. 4 is printed and baked in the printing department, there is also an embossed material with the same pattern as the printed pattern A engraved on the outer periphery. A printed pattern A is printed on the workpiece 2 via the roll 19, the elastic roll 20, the plate cylinder 21, a fountain roll (not shown), a doctor, etc.
synchronizing the uneven pattern of the embossing roll 19, and
As shown in Figure 7 (al), embossing is performed to a depth shallower than the final embossing depth, and the uneven pattern
At least part of the top, bottom, and bent portions of ' and C', for example, in FIG. 7(b), a pattern is formed with paint, ink, etc. on the bent portion to promote shading and to enhance the three-dimensional effect. . Further, the front embossing machine side is constructed with a mechanism that allows the frame on which this type of roll is attached to be slid vertically and horizontally depending on the position of the workpiece 2. The heater 22 is used to dry or bake the patterned paint to enhance the three-dimensional effect applied by the previous embossing machine (2), and in the heated state, the embossing process is carried out to perform deeper embossing. It is.

That is, as shown in FIG. 8, in the embossing line, the same pattern as the printing pattern A is engraved on the upper and lower male and female embossing rolls 24 and 25, and the unfinished unevenness on the workpiece 2 is engraved. Patterns B' and C' are completed as shown in FIG. The printing machine 10, the pre-embossing excavation, and the embossing transport have the same diameter and the same rotation, and are synchronized using a marking device (not shown), a chain, a belt, an electronic control machine, etc. to avoid discrepancies between patterns. It is controlled by a mechanism 26. The leveler blade is used to correct residual strain existing in the embossed workpiece 2. Its structure is as shown in FIG.
, lower roller group 29a, 29b 1. ,,． They are arranged in a zigzag pattern like 29n, and the gap 30 can be controlled. 31 is a pinch roller for pulling, which rotates faster than the rotation for conveying the embossing process.
The workpiece 2 is passed through the pre-emboss drilling and embossing front processes in a stretched state B (under tension) to prevent the workpiece 2 from loosening and to prevent uneven patterns B and C from shifting during the embossing process. This is for the purpose of achieving this goal. 32 is formed by roll forming in a molding machine as shown in FIGS. 11(a) to 11(a), and the coating film is peeled off immediately under a heated condition immediately after printing and embossing. ,
It is roll-formed in a way that does not cause cranking and further releases the residual strain caused by embossing to form a panel poem.

Next, the operation of the embossing device according to the present invention will be briefly described. First, a workpiece 2 made of, for example, a primer steel plate mounted on a feeding section is fed into a loop via a pinch roller 4. At this time, even if the workpiece 2 is pulled by the pinch roller 4, the uncoiler 3
is equipped with a braking device (not shown), so that the workpiece 2 is fed onto the loop section under a certain permissible tension. The workpiece 2 is then fed from above the loop section to the printing section via a pinch roller 7 that also serves as a guide. In the printing section (■), a pattern as shown in Fig. 4 is printed on the surface of the workpiece 2 using ink, a clear resin (acrylic resin) is applied on top of the pattern, and after this clear is dried and baked, the pre-emboss is applied. The workpiece material 2 is fed to the roll 18.
Concave and convex patterns B' and C that match the pattern shown in FIG.
' is formed as shown in FIG. 7+a), 1tl), and at the same time, a pattern θ for enhancing the three-dimensional effect is attached to the bent portion. Note that 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 = 0.8.
W, A=0.8)-1st place. Further, ΔW, W is the width of the top surface of the convex pattern C, /l, )-1 is the embossing depth.

Next, the workpiece 2 is fed to the front embossing machine, where it is embossed to a depth as shown in FIG. 7, matching the printed pattern A-1 on the workpiece 2. . Note that the embossing on the workpiece 2 at this time is embossing with tension applied. Then, 2. is dried with a heater 22 and sent to the embossing line, where the concavo-convex patterns B and C of the final depth as shown in FIG. 9 are embossed. The workpiece 2 sent out from embossing and processing is corrected by a leveler 27 for residual strain during embossing while being stretched by a tensioning pinch roller 31, and then fed to a molding machine 32. Furthermore, when the force relationship between the pinch roller 7 and the tensioning pinch roller 31 on the workpiece 2 is based on the rotation of the embossing roll, the 0 rotation of the vinyl roller 9 is slow and the rotation of the tensioning pinch roller 3 is slow. By setting a fast speed relationship, the embossing and uneven patterns B and C are flattened without erasing them while the workpiece 2 is under tension, and residual strain is removed. As a result, the workpiece 2 will no longer tilt or twist in the above-mentioned area, will no longer flutter at the entrance for embossing, and will no longer shift during embossing. The pattern may become unclear, or
No more biting into it. In addition, since the leveler nail is under tension in one direction, it can be easily flattened and residual strain can be easily released. Of course, the tension in the above region is within the range of force that does not change the embossed pattern.

Next, test piece I embossed using the above-mentioned device will be compared with test piece I embossed using a conventionally used device.

In addition, the inspection methods include (1) the apparent number of pekokki present per meter of the workpiece 2, (2) the distribution state of pekokki, and (3) the height difference of pekokki (design irregularities). Difference between the bottom and top surfaces of the shaped part and the actual bottom and top surfaces) (4) Observations about the overall appearance are shown.

Regarding the appearance of (4), regarding weather resistance, conventional workpieces had cracks and blisters in the coating film after 1500 hours of salt spray testing, but when processed using the panel manufacturing equipment of the present invention, , these were not seen at all. Further, the bent portion of the molded panel according to the present invention had no scratches or twists, and was beautifully molded.

(Effects of the Invention) According to the embossing apparatus according to the present invention, (1) the printed pattern and the embossed pattern are matched to each other for processing, thereby promoting a three-dimensional effect. ■Since the embossing process is performed in two or more stages, the paint film will not crack or peel off even when deep embossing is performed.

■By using multiple stages of forming rolls, it is possible to form an uneven pattern with steep angles. ■Less residual distortion and can be easily corrected with a leveler. ■During embossing, a pattern to enhance the three-dimensional effect can be printed and painted on any part of the uneven pattern, resulting in a cubic synergistic effect that greatly enhances the three-dimensional effect. ■The lines are arranged in a straight line and embossing is performed using a machine that does not apply excessive force to the workpiece, so embossing can be performed smoothly and at high speed. ■
A pattern to enhance the three-dimensional effect is added using the front embossing machine, and this is dried and embossed, so the three-dimensional effect is further enhanced and the pattern does not peel off. ■Since the embossing process is performed while being stretched between the printing section and the embossing machine using a pinch roller, there is no misalignment between the printed pattern and the uneven pattern. ■The molded panels have accurate bends and can be manufactured continuously without distortion or cracks. It has the following characteristics.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an example of a panel manufacturing apparatus having a decorative surface with an uneven pattern according to the present invention, FIGS. 2, 3, and 5.
6, 8, and 10 are explanatory diagrams showing specific examples of each part of the above device, FIG. 4 is a plan view showing an example of a printed pattern, and FIG. 7 T8), (b) is a pilot FIG. 9 is an enlarged end view showing a part of the uneven pattern formed by the embossing machine; FIG. 9 is an enlarged end view showing a part of the completed uneven pattern;
FIGS. 11(a) to 11(?) are end views showing an example of a panel formed from a processed material. 1... Sending section, Engineering... Loop section, ■... Printing section,
■... Pilot embossing machine, profit... embossing machine, nail... leveler, tension... tension pinch roller, A... printed pattern, B, C, B', C'...・Uneven pattern, D...Pattern to enhance the three-dimensional effect. 1 Figure 82 Figure L−−−−−−+−−1−−−−−−−−−−−−−j
fear 4 round 5 close b figure 7 figure a) force Z figure leopard q figure 87ρ figure /l figure'-1111 bow L

Claims (1)

[Scope of Claims] (11) A delivery section to which a workpiece made of a sheet-like material such as a thin metal plate is attached, and the workpiece sent from the delivery section is stored and always sent to the next process without difficulty. A loop part, a pin that reliably feeds the workpiece sent out from the loop part to the next process, a pinch roller, and an arbitrary color consisting of one color or multiple colors on the surface of the workpiece sent out from the pinch roller. A printing section that directly prints the pattern, and a printing section that guides the workpiece sent out from the printing section, and performs the first shallow embossing by matching the uneven pattern that is the same as the above pattern, and embossing. Bends, top surfaces, and bottom surfaces with uneven patterns that were not completed during processing.
Contributes to shading on at least a portion of the side wall. A pilot embossing machine that forms a pattern to enhance the three-dimensional effect using one type of paint, ink, etc., and a pilot embossing machine that bakes and dries the undried paint, ink, etc. on the workpiece sent from the Viloft embossing machine. a heater, an embossing machine that embosses deeper an uneven pattern that matches the embossed pattern on a workpiece sent out from the heater; rotation of the embossing machine, a pilot embossing machine, and a printing section;
A synchronization mechanism that synchronizes the printed pattern and the uneven pattern, a leveler arranged after the embossing machine, a pulling pinch roller disposed at the outlet of the leveler, and a workpiece sent out from the pinch roller to form the material. 1. A manufacturing device for a panel having a decorative surface with an uneven pattern, characterized in that the device is comprised of a molding machine for producing a decorative surface with an uneven pattern.