JPS60244368A - 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 certainly fed to a printing part 8 by pinch rollers 7. In this printing part 8, the plate 2 receives the printing of a pattern A on the surface thereof and coated with a clear coat by a coater 11 and receives shallow emboss-processing of embossed patterns B', C' coincided with the pattern A by an emboss-processing machine 18 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 sent to a heater 22 where a paint is baked and dried, and sent to an emboss- processing machine 23 to receive deep emboss-processing of embossed patterns B, C in the same way as mentioned above. The printer 10 and the processing machine 18, 23 are same in a diameter and rotation, and regulated by a tuning mechanism 26 so as not to generate non-coincidence between patterns. The plate 2 is corrected by a leveller 27 and fed out by pulling pinch rollers 31.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention applies printing, painting, and enhancement processing to the decorative surface of a workpiece made of a sheet-like material such as a thin metal plate, paper, or synthetic resin. This invention relates to an apparatus for forming a decorative surface with an uneven pattern 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.
Since embossing is forcibly applied to a decorative coating film that has already been completed before embossing, the coating film often cracks or peels off 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.

(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 surface will not crack, peel off, or the pattern will be deformed due to embossing, and the decorative surface has an uneven pattern that is weather resistant, highly productive, and has a three-dimensional effect.
This invention was invented for the purpose of providing an apparatus (hereinafter simply referred to as an embossing apparatus) for producing a workpiece without pecks.

(Structure of the Invention) In order to achieve this object, the embossing device according to the present invention G 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 fed from the delivery section. A loop section that stores processed material and always sends it to the next process without strain,
a printing unit that directly prints an arbitrary pattern of one color or multiple colors on the surface of the workpiece sent out from the loop unit;
In addition to guiding the workpiece sent out from this printing section, the first shallow embossing is performed in synchronization with the above-mentioned pattern, and at the same time, the bent portions and top surfaces of the unfinished uneven pattern formed by the embossing are , at least all of the bottom and side walls,
Alternatively, there is a pilot embossing machine that forms a pattern to enhance the three-dimensional effect by using one type of paint, ink, etc., and a pattern to enhance the three-dimensional effect that is applied to the workpiece sent from the pilot embossing machine. A heater for drying the pattern, an embossing machine for embossing a deeper uneven pattern matching the embossed pattern on the workpiece sent out from the heater, a leveler arranged after the above-mentioned processing machine, and a leveler arranged at the exit of the embossing machine. The present invention is characterized in that it is composed of tensioning pinch rollers arranged in series, and a synchronization mechanism for synchronizing the printing section, the pilot embossing machine, and the embossing machine.

(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 Hapiloft embossing machine, and the above-mentioned 1. The top surface of the uneven pattern is shallowly embossed in accordance with the same pattern. A pattern for promoting a three-dimensional effect is formed on at least one of the bottom surface, side wall, and bent portion. Next, the workpiece formed in this way is embossed with the same pattern more deeply by an embossing machine so as to match the above-mentioned shallow uneven pattern, and the uneven pattern is erased by using a repeller on the workpiece. This process is carried out under tension by removing any residual strain and flattening the material before sending it to the next process by pulling it with a pinch roller to reduce the residual strain caused by the process.

(Example) Next, an example of the embossing device according to the present invention will be described using the drawings. In Fig. 1, 1 is the delivery section, ] is the loop section, 7 is the pinch roller, the main is the printing section, kawa is the pilot embossing machine (hereinafter simply referred to as the front embossing machine), 22 is the heater, and 刹 is the embossing machine. 26 is a tuning mechanism, the nail is a leveler, and 31 is a tensioning pinch roller.

To explain further, a workpiece 2 made of a sheet-like material such as a thin metal plate, for example, one type of surface-treated steel plate, primer steel plate, aluminum plate, copper plate, paper, or synthetic resin, is attached to the uncoiler 3 on the delivery part. This is for feeding the material to the next process via the pinch roller 4.

In addition, for example, as shown in FIG.
The workpiece 2 is arranged so that it can move up and down.
It functions as a relief part for storing the workpiece 2 and always sending the workpiece 2 smoothly to the next process. To explain further, the main printing section consists of a washing machine 9, a printing machine 10, a top clear coater 11, and an oven (not shown) for baking provided as necessary. It consists of: 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 machines 10 is a gravure offset printing machine as shown in FIG.
2, an offset roll 13, a plate cylinder 14, a fountain roll 15, a shim roll 16, and a doctor 17.

In addition, the printing department staff placed the whole thing on the frame and set the positional relationship with the front embossing machine 0. Fine adjustment can be made in IN units. In addition, the former Enhos Processing Machine publication is the 4th edition in Printing Department 1.
Workpiece material 2 on which pattern A is printed and baked as shown in the figure
An embossing roll 19, an elastic roll 20, and a plate cylinder 2 each having 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 fountain roll, a doctor, etc. (not shown), and the final embossing process is performed as shown in FIG. 7 (al). In addition to embossing shallower than the depth, at least part of the top surface, bottom surface, and bent portion of the uneven patterns b' and C' on the workpiece 2, for example, FIG. 7(b)
In this method, a pattern is formed using paint, ink, etc. on the bent portion to promote shading and to enhance the three-dimensional effect.

In addition, the pre-emboss transport is constructed with a mechanism that allows the frame on which this type of roll is mounted to be slid vertically and horizontally depending on the position of the workpiece 2. The heater 22
The embossing machine υ is used to dry or bake the patterned paint applied by the previous embossing machine to enhance the three-dimensional effect, and in this heated state, the embossing machine υ performs deeper embossing. . That is, as shown in FIG. 8, the embossing machine case engraves the same pattern as the printed pattern A on the upper and lower male and female embossing rolls 24 and 25.
The unfinished uneven patterns B' and C' on the workpiece 2 are completed as shown in FIG. In addition, the printing machine 10, the front embossing transport, and the embossing line should have the same diameter and the same rotation, and should be separated from marking devices, chains, belts, electronic control machines, etc. (not shown) to avoid discrepancies between patterns. It is controlled by a tuning mechanism 26. The leveler nail is an embossed workpiece 2
This is to correct the residual distortion that exists in the . Its structure is as shown in FIG. 10, with upper roller groups 28a and 21? b,
28c1,,,. 28n, lower roller group 2'la, 2
'? b1. ,,． They are arranged in a zigzag pattern like 29n, and the gap 30 can be controlled. Reference numeral 31 denotes a tensioning pinch roller, which rotates faster than the embossing line, and allows the workpiece 2 to pass through the process of the pre-embossing conveyance and embossing machine casing in a stretched state (under tension). This is to prevent the uneven patterns B and C from becoming loose during the embossing process.

Next, the operation of the embossing device according to the present invention will be briefly explained. First, a workpiece 2 made of, for example, a primer steel plate mounted on a feeding section is fed to a loop section i via a pinch roller 4. Oh, at this time, workpiece material 2
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 fed to the loop part i under a certain allowable 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. The printing department prints a pattern as shown in Figure 4 on the surface of the workpiece 2 with ink, coats it with clear resin (acrylic resin), dries and bakes this clear, and then prints the pre-emboss. roll", and the uneven pattern B' matching the pattern shown in FIG. 4 is applied to the workpiece 2.
C' is formed as shown in Fig. 7 (al, (bl), and at the same time, a pattern p for enhancing the three-dimensional effect is attached to the bent part. At this time, the uneven patterns B' and C' are the final uneven pattern. Approximately 80% size and depth of B and C, so-called Δw = o, s
w,/l=0.8)-1st place. Further, ΔW and W are the widths of the top surface of the convex pattern C, and J′l and H are the embossing depths.

Next, the workpiece 2 is fed to the front embossing machine,
Embossing is performed to a depth as shown in FIG. 7, matching the printed pattern C◇' on the workpiece 2. At this time, the workpiece 2 is dried by engraving and sent to a row of embossing machines, where the uneven patterns B and C having the final depth as shown in FIG. 9 are embossed. The workpiece 2 sent out from the embossing machine row is corrected by a leveling machine to remove residual strain during embossing while being stretched by a tensioning pinch roller 31, and then sent to the next process (not shown). It is. 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 rotation speed of the pinch roller 7 is slow and the rotation speed of the tensioning pinch roller 31 is fast. By setting the relationship, the embossing and uneven patterns B and C are flattened without erasing them while the workpiece 2 is under tension, and the residual strain is removed. As a result, the workpiece 2 will no longer be twisted or twisted in the above-mentioned area, nor will it flap around at the entrance of the front embossing machine or the embossing machine, and the pattern will shift during embossing. This will prevent the image from becoming unclear or being double-clicked. Further, since tension is applied in one direction between the levelers, 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 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 method is +11: the apparent number of pekokki present per 1 meter of workpiece material 2, (2) distribution state of pekokki, (3) 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), (c) W4* feeling.

Furthermore, in terms of weather resistance, conventional workpieces had cracks and blisters in the coating film after 1500 hours of salt spray testing, but when processed with the embossing device of the present invention,
These were not seen at all.

Note that the pre-enhos processing mechanism can also be formed with an iron roll.

(Effects of the Invention) According to the embossing apparatus according to the present invention, (1) the printed pattern and the embossed pattern are processed by matching, so that a three-dimensional effect is promoted. ■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.

■Since the embossing process is performed using multiple rolls, it is possible to form an uneven pattern with steep angles. ■Less residual distortion and can be easily corrected with a repeller. ■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. ■ Embossing can be carried out smoothly and at high speed because the lines are arranged in a straight line and embossing is performed using a machine that does not apply excessive force to the workpiece. (2) 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. It has the following characteristics.

[Brief explanation of drawings]

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.
, 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 FIG. 7 (al, mountain) is formed by a pilot embossing machine. FIG. 9 is an enlarged end view showing a part of the completed uneven pattern. FIG. 9 is an enlarged end view showing a part of the completed uneven pattern. Top...Delivery section, 5 -'-Loop section, ■...Printing section, ■...Pilot embossing machine,% Embossing machine, 27--Leveler, 3 No.... Pinch roller for tension, A...Printed pattern, B, C, B', C'.
...Uneven pattern, D...Pattern to enhance three-dimensional effect. 7 Figure name 8 Inae° 7 Figure brother 10 Figure 1A-

Claims (1)

[Claims] (1) A delivery part equipped with a workpiece made of a sheet-like material such as a thin metal plate, and a loop part that stores the workpiece fed from the delivery part and sends it out to the next process without difficulty. A pinch roller that reliably feeds the workpiece sent out from the loop section to the next process, and an arbitrary pattern consisting of one color or multiple colors is directly printed on the surface of the workpiece sent out from the pinch roller. A printing section that guides the workpiece sent out from the printing section, performs the first shallow embossing by matching the same uneven pattern as the above pattern, and also removes unfinished unevenness during embossing. Contributes to shading on at least a portion of the bend, top, bottom, and side walls of the pattern. 7) A pilot embossing machine that forms a pattern to enhance the three-dimensional effect using one type of paint, ink, etc.; an embossing machine that embosses a concavo-convex pattern more deeply that matches the embossing pattern of the workpiece sent out from the heater, the embossing machine, the biloft embossing machine, and the rotation of the printing section;
A decorative surface with an uneven pattern, characterized by comprising a synchronizing mechanism for synchronizing the printed pattern and the uneven pattern, a leveler arranged after the embossing machine, and a pulling pinch roller disposed at the outlet of the leveler. Forming device. .