JPS60244366A - Apparatus for forming decorative surface having embossed pattern - Google Patents

Abstract

PURPOSE:To obtain a decorative surface rich in three-dimensional feeling and having a film free from cracks, by specifying the arrangement of the titled apparatus to a sheet like material to be processed and applying multi-stage emboss-processing, printing and a three-dimensional feeling promoting pattern to the bent part of an embossed pattern. CONSTITUTION:A material to be processed, for example, a thin metal plate 2 is fed out to a loop part 5 from a feed-out part 1 and stored therein before smoothly fed to a printing part 8. In this printing part 8, the plate 2 receives the printing of monochromatic or multi-color patterns on the surface thereof and guided to an emboss-processing machine 17 to receive the shallow emboss-processing of embossed patterns B', C' coincided with the printed pattern and, at the same time, a three-dimensional feeling promoting pattern 2a is adhered to the bent part of said plate 2. Next, the plate 2 is sent to an emboss-processing machine 21 to receive deep emboss-processing to form patterns B, C coincided with the patterns B', C'. Subsequently, the plate 2 is sent to a leveller 25 where the residual strain thereof at the time of emboss-processing is corrected by a pulling pinch roller 29 and a top clear coat is applied to the plate 2 by an applicator 30 while the coated plate 2 is baked in an over 32 and fed out.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is a method for printing shading and shading on 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 an apparatus for forming a decorative surface with an uneven pattern by applying painting and enhosing to arbitrary positions to produce a workpiece with a decorative surface that has 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 Unexamined Patent Publication No. 53-90347. The decorative surface of the thin metal plate processed with this type of equipment is embossed with a deep uneven pattern in one step.
Because embossing is forcibly applied to the decorative paint film that has already been completed before the embossing process, cracks and peeling often occur 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 a deep embossment, resulting in a simple appearance of an uneven surface.
It was not possible to create a sufficient three-dimensional effect.

(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 workpiece has a decorative surface with an uneven pattern that is weather resistant, productive, and has a three-dimensional effect, without cracking or peeling of the decorative coating on the parts, or deforming the pattern due to embossing. This invention was invented for the purpose of providing an apparatus for manufacturing (hereinafter simply referred to as an Enphos apparatus).

(Structure of the Invention) In order to achieve this object, the embossing device 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. A pilot embossing machine that forms a pattern consisting of light and shade to enhance the impression using one type of paint, ink, etc., and a deeper uneven pattern that matches the enhanced pattern on the workpiece sent out from this pilot embossing machine. The embossing machine that performs the embossing process, the printing section, the Viloft embossing machine, the same t1m mechanism that synchronizes the rotation of the embossing machine, the leveler arranged after the above-mentioned processing machine, and the top clear applied to the decorative surface sent from the leveler. It is characterized by a configuration in which a coating machine for applying the coating and an oven for baking the coating are arranged in series.

(Function) According to this configuration, an arbitrary pattern is printed on the decorative surface of the workpiece in the printing section, and the printed workpiece is guided to the embossing machine by the pilot embossing machine, and the above-mentioned The pattern is shallowly embossed to match the same pattern, and a pattern to enhance the three-dimensional effect is formed on at least one of the top surface, bottom surface, side wall, and bent portion of the uneven pattern.Next, The workpiece thus formed is then embossed with the same pattern as above by an embossing machine in accordance with the above-mentioned shallow uneven pattern, and further embossed at a predetermined depth to a predetermined depth from this workpiece by a leveler. The residual distortion is removed without erasing the uneven pattern, the material is flattened and sent to a coating machine that applies a top clear coat, and this top/knob coat is then baked and sent to the next process. .

(Example) Next, an example of the Enphos device according to the present invention will be described with reference to the drawings. In Fig. 1, the upper part is the feeding part, the part is the loop part, 7 is the pinch roller, the part is the printing 91 (, ■ is the pilot embossing machine (hereinafter simply referred to as the front embossing machine), ■ is the embossing machine, 29 is a coating machine, and 32 is an open baking machine.Moreover, as shown in FIG. , a primer steel plate, an aluminum plate, a copper plate, paper, or a synthetic resin is mounted on an uncoiler 3, and the uncoiler 3 is fed to the next process via a pinch roller 4.

In addition, on the loop part, as shown in FIG. 3, for example, a plurality of openings and holes 6 are arranged so as to be movable up and down to store the workpiece 2, so that the workpiece 2 can be easily pinched at all times. It functions as a relief part for sending out to the next process via the roller 7. Furthermore, the main printing section consists of a washing machine 9 and a one-stage or multiple-stage printing machine 10 (two stages in the figure), and prints a pattern A, for example, as shown in FIG. 4, on the decorative surface of the workpiece 2. It is printed in one color or in multiple colors. The printing is gravure printing, off-cent printing, screen printing,
Printing is done by either letterpress printing or planographic printing. Note that printing is performed by making full use of techniques such as shading and shading to enhance the three-dimensional effect on any desired surface of the decorative surface. An example of one set of the printing press 10 is a gravure offset printing machine as shown in FIG. It is.

In addition, as shown in FIG. 6, the front embossing machine H is used in the printing department to produce a workpiece 2 on which a pattern A as shown in FIG. 4 is printed.
An enhancer roll 18, an elastic roll 19, and a plate cylinder 2 each having the same pattern as the printed pattern A engraved on its outer periphery.
0 and the uneven pattern B1C of the embossing roll 18 is synchronized with the printed pattern A printed on the workpiece 2 via a fountain roll, a doctor, etc. (not shown), and
As shown in Fig. 7(b), embossing is performed to a depth shallower than the final embossing depth, and at least part of the top, bottom, and bent portions of the uneven patterns B and C on the workpiece 2, for example, Fig. 7(b).
In this case, a pattern 2a for promoting a three-dimensional effect that promotes shading is formed on the bent portion using paint, ink, or the like. As shown in FIG. 8, the Enhos processing machine 2 engraves the same pattern as the printed pattern A on the upper and lower male and female Enphos rolls 22 and 23, thereby removing the unfinished irregularities on the workpiece 2. Patterns B and C are number 9
As shown in the figure, it is embossed more deeply. In addition, the printing machine 10, the front Enhos processing machine H, and the Enhos processing machine ■ have rolls of the same diameter and rotate synchronously.
This is controlled by a synchronization mechanism 24 such as a marking device, a chain, a coaxial shaft, a belt, and an electronic control device so that no deviation occurs in the printed pattern. The leveler sword corrects residual strain existing in the embossed workpiece 2. As shown in FIG. 10, the configuration includes upper roller groups 26a, 26b, 26c 1. .

,,26n, lower roller group 27a, 27b 1. ,,
．． They are arranged in a zigzag pattern like 27n, and the gap 28 can be controlled.

Reference numeral 29 is a tensioning pinch roller, which is provided as necessary, and is mainly designed to rotate faster than the embossing/processing machine Gen 2.
The workpiece 2 is passed through the steps of the front embossing machine H and the embossing machine 2 in a stretched state (under tension). Further, the applicator 30 is used to bake a tonneau 31 onto the decorative surface of the embossed workpiece 2 using an oven 32.

Next, the operation of the embossing device according to the present invention will be briefly explained. First, a workpiece 2 made of a primer steel plate mounted on a feeding section is fed to a loop section through a pinch roller 4. 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 in the loop under a certain allowable tension. It will be sent to Then, the workpiece 2 is fed from the loop portion to the main printing section via the pin narrow rough. The main printing department prints a pattern as shown in Fig. 4 on the surface of the workpiece 2 with ink, dries this ink, and sends it to the front embossing roll H. At the same time, the uneven patterns B' and C' matching the pattern shown in FIG. 7 (al, (bl) are formed as shown in FIG.
Attach a.

Note that the uneven patterns B' and C' at this time are the final uneven patterns B,
Approximately 80% size and depth of C, so-called ΔW = 0.8W,
ho, sH position. Further, ΔW and W are the widths 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 υ.

Then, embossing is performed to a depth as shown in FIG. 9, matching the uneven patterns B' and C' on the workpiece 2. Note that the embossing on the workpiece 2 at this time is performed under tension. Then, the workpiece 2 sent out from the embossing machine 2 is stretched by a tension pinch roller 29 to correct the residual strain during embossing by a reherer, and is sent to the next process (not shown). It is something that will be done. Furthermore, the workpiece 2 between the pinch roller 7 and the tensioning pinch roller 29
The rotation of the pinch roller 7 is slow and the tensioning pinch roller 29 is fast, based on the rotation of the embossing roll ■.
In this embodiment, the embossing and uneven patterns B and C are flattened without erasing them, and the residual strain is removed. As a result, the workpiece 2 will no longer form a mountain in the above-mentioned area, will not move in a twisted manner, will no longer flop around at the entrance of the front embossing machine H1 embossing fi21, and will no longer be distorted during embossing. This will prevent the image from becoming unclear or being double-clicked.

In addition, since a tension is applied in one direction when peeling with a reshape, flattening can be easily achieved and residual strain can be easily released.

Of course, the tension in the above region is within the range of forces that do not change the enphos pattern. Furthermore, the workpiece 2
After being flattened with a leveler, a top clear coat 31 is applied to the entire decorative surface using a coating machine 30, and this is baked in an oven 32 and sent to the next process, for example, a molding machine 33. be.

Next, a comparison will be made between the test piece (2) embossed using the above-mentioned device and the test piece (2) embossed using a conventionally used device.

The inspection methods include (1) the apparent number of pekokki present per 201 meters of workpiece material, (2) the distribution state of pekokki, and (3) the height difference of pekokki (designed irregularities). (differences between the bottom and top surfaces and the actual bottom and top surfaces), and (4) observations regarding the overall appearance.

Regarding the appearance of (4), furthermore, in terms of weather resistance, the conventional workpiece material has a rating of 15-00
Cracks and blisters were observed in the coating film during the salt spray test, but these were not observed at all in the workpiece processed using the embossing device according to the present invention. What has been described above is only one example of the apparatus according to the present invention. ) can also be installed. Moreover, the uneven patterns B and C can also be formed as shown in FIGS. 11(al) and (b).

(Effects of the Invention) According to the embossing processing apparatus according to the present invention, (1) processing is performed by matching the printed pattern and the embossed pattern, 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 if 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 reshader. ■During embossing, a pattern to enhance the three-dimensional effect can be printed, painted, or filmed 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 the mechanism does not apply excessive force to the workpiece, allowing for smooth and high-speed embossing. It has the following characteristics.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an example of an apparatus for forming a decorative surface with an uneven pattern according to the present invention, FIGS. 2, 3, 5, and 6.
, FIG. 8, and FIG. 10 are explanatory diagrams showing specific examples of each part of the above-mentioned apparatus, and FIG. 4 is a plan view showing an example of a printed pattern.
Fig. 7(a), (bl is an enlarged end view showing a part of the uneven pattern formed by the pilot embossing machine, Fig. 9
FIGS. 11(a) and 11(fb) are end views showing an enlarged part of the completed uneven pattern. Top... Sending section, l... Loop section, ■... Printing section,
V... Pilot embossing machine, ■... Embossing machine, 25...-Leveler, A... Print pattern, B, C
, B', C'... uneven pattern, 2a... pattern for promoting three-dimensional effect.萬 / Picture name Z Picture number 3 Picture number 3 Picture number 4 picture you S Picture name ro pushi 7 Ro ('l) 7 13 Picture number 7 L8

Claims (1)

[Claims] (1) A delivery part to which a workpiece made of a sheet-like material such as a thin metal plate is attached; a loop part that stores the workpiece fed from the delivery part and always sends it out to the next process without any difficulty; A printing section that directly prints an arbitrary pattern of one color or multiple colors on the surface of the workpiece sent out from the loop section, and a printing section that guides the workpiece sent out from the printing section and synchronizes with the pattern. At the same time, a first shallow embossing process is performed, and at the same time, a pattern to enhance the three-dimensional effect is painted to create a shadow on at least a portion of the bent part, top surface, bottom surface, and side wall of the unfinished uneven pattern formed by the embossing process. , a pilot embossing machine that embosses a pattern with one type of ink, etc.; an embossing machine that embosses a deeper uneven pattern on a workpiece sent out from the pilot embossing machine in accordance with the embossed pattern; and the processing. A leveler arranged after the leveler, a pulling pinch roller provided at the outlet of the leveler, a coating machine that applies top clear to the decorative surface of the workpiece sent from the roller, and a baking machine that burns the top clear. is a device for forming a decorative surface with an uneven pattern, which is characterized by arranging ovens in series.