Embossing roller laser engraving machine

Abstract

The utility model discloses an embossing roller laser engraving machine which comprises a machine table, a first clamping and fixing seat, a second clamping and fixing seat, a laser engraving device and a cleaning device. Chucks are rotatably mounted on the opposite surfaces of the first clamping and fixing seat and the second clamping and fixing seat, and a driver for driving the chucks to rotate is fixed on the first clamping and fixing seat; the laser engraving device comprises a Z-axis linear driving seat and a laser generator; the laser generator comprises a laser generator body, a laser engraving head and a protective cover; the cleaning device comprises a fixing support, an air cylinder and a pneumatic cleaning brush head, and the pneumatic cleaning brush head makes contact with the surface of the embossing roller so as to clean dust and scraps generated in the laser etching process. According to the laser engraving machine for the embossing roller, the surface of the embossing roller is directly engraved through high-power laser, no cutter is used, and compared with a black glue engraving machine, the laser engraving machine for the embossing roller is simpler in process step and more environmentally friendly.

Description

Technical Field

[0001] This utility model relates to the field of laser engraving technology, and in particular to a laser engraving machine for embossing rollers. Background Technology

[0002] Embossing rollers, also known as pattern rollers, are molds with patterns and designs engraved on their circumferential surface. They are used to press patterns and designs onto surfaces such as fur, wallpaper, aluminum foil, and plastic. During the manufacturing process, the surface of the embossing roller is first polished, and then the surface texture is processed to give it patterns and designs.

[0003] Currently, the surface textures of embossing rollers are mainly engraved using equipment such as CNC rotary engraving machines and vinyl engraving machines. When using a CNC rotary engraving machine, the processing speed is slow, frequent tool changes are required, and tool wear is significant. When using a vinyl engraving machine, black glue is first applied to the surface of the embossing roller, then the glue is ablated with a laser to create the texture. Next, acid is used to corrode the roller surface not covered by the glue, so that the portion left after the glue is ablated is corroded by the acid to form concave textures. Afterward, the embossing roller is removed from the acid bath and cleaned, and finally, the glue is washed away to obtain the finished embossing roller. This method is relatively complex, and the glue, generally an organic substance, easily produces carbon powder and other organic compounds after laser ablation, which can easily pollute the processing environment. Furthermore, the amount of acid used to corrode the embossing roller is large, especially for processing rollers with deep textures. After acid processing, the embossing roller also requires environmental treatment, which is very costly. Utility Model Content

[0004] The purpose of this invention is to provide a laser engraving machine for embossing rollers. This machine uses a high-power laser to directly engrave the surface of the embossing roller without using any cutting tools. Compared with a black vinyl engraving machine, the process is simpler and more environmentally friendly.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides a laser engraving machine for embossing rollers, comprising:

[0007] Machine tool;

[0008] A first clamping and fixing seat and a second clamping and fixing seat are respectively disposed on the surface of the machine tool, and chucks are rotatably mounted on opposite surfaces. The embossing roller to be processed is fixed between the pair of chucks. A driver for driving the chucks to rotate is fixed on the first clamping and fixing seat.

[0009] The laser engraving device comprises a Z-axis linear driving base and a laser generator; the Z-axis linear driving base is fixed to the surface of the machine table and parallel to the axis of the embossing roller; the laser generator comprises a laser generator body, a laser engraving head and a protective cover; the laser generator body is installed on the Z-axis linear driving base; the laser engraving head is arranged at the front end of the laser generator body and faces the embossing roller; and the protective cover is arranged outside the laser generator body.

[0010] The cleaning device comprises a fixed support, a cylinder and a pneumatic cleaning brush head; the fixed support is installed on the Z-axis linear driving base; the cylinder is installed obliquely downward on the fixed support; the pneumatic cleaning brush head is fixed to the piston rod of the cylinder and located above the laser engraving head; and the pneumatic cleaning brush head is in contact with the surface of the embossing roller to clean the dust and debris generated in the laser etching process.

[0011] Further, the surface of the machine table is also provided with a pair of linear guide rails, and the second clamping fixed seat is slidably arranged on the pair of linear guide rails.

[0012] Further, the driver is a motor.

[0013] Further, the chuck is a four-jaw chuck.

[0014] Further, the laser engraving device further comprises an X-axis linear driving base fixed to the Z-axis linear driving base, and the laser generator is installed on the X-axis linear driving base.

[0015] Further, a motor support plate is installed on the Z-axis linear driving base, and the X-axis linear driving base and the fixed support are both installed on the motor support plate.

[0016] Further, the laser generator is a high-power laser generator with a power of 1000-3000W.

[0017] Further, the spot diameter of the laser engraving head is 0.01mm, 0.03mm or 0.05mm.

[0018] Further, the distance between the laser engraving head and the surface of the embossing roller is 2-4cm.

[0019] Further, the Z-axis linear driving base is a linear motor, and the linear motor is provided with a magnetic scale.

[0020] Further, at least one mounting hole is arranged on the protective cover, and a polishing head and / or a sandblasting head are detachably installed in the mounting hole.

[0021] Further, a proofing machine is detachably mounted on the pair of linear guides.

[0022] Compared with the prior art, the utility model can realize at least the following technical effects:

[0023] 1. The embossing roller laser engraving machine directly engraves the surface of the embossing roller by using high-power laser to form a predetermined pattern. Compared with the existing black glue engraving machine process of glue spraying-laser ablation-acid corrosion-glue removal, the embossing roller laser engraving machine only needs one-step laser direct engraving to complete the pattern processing, greatly simplifies the processing steps, improves the processing speed, reduces the cost, and is more environmentally friendly.

[0024] 2. Compared with the existing CNC roll engraving machine, the embossing roller laser engraving machine of the utility model does not need to use any tool, and does not need to replace the tool during processing, so the processing speed is faster, and the dust generated is less.

[0025] 3. The embossing roller laser engraving machine of the utility model is provided with a pneumatic cleaning brush head above the laser generator, and the pneumatic cleaning brush head is in contact with the surface of the embossing roller. Through the physical cleaning effect of the pneumatic cleaning brush head, the dust and debris generated during laser etching can be effectively removed, ensuring the subsequent processing and engraving precision. BRIEF DESCRIPTION OF DRAWINGS

[0026] The technical scheme and other beneficial effects of the utility model will be apparent from the following detailed description of the specific embodiments of the utility model combined with the drawings.

[0027] Figure 1 Fig. 1 is a structural schematic view of the embossing roller laser engraving machine of the utility model;

[0028] Figure 2 Fig. 3 is a structural schematic view of the laser generator;

[0029] Figure 3 Fig. 4 is a structural schematic view of the laser engraving device and the cleaning device;

[0030] Figure 4 Fig. 5 is a schematic view of the proofing machine mounted on the embossing roller laser engraving machine;

[0031] MARKS:

[0032] 100, machine table; 110, first clamping fixed seat; 120, second clamping fixed seat; 130, chuck; 140, linear guide rail;

[0033] 200, laser engraving device; 210, Z-axis linear drive seat; 211, motor support plate; 220, X-axis linear drive seat; 230, laser generator; 231, laser generator body; 232, laser engraving head; 233, protective cover;

[0034] 300, cleaning device; 310, fixed support; 320, air cylinder; 330, pneumatic cleaning brush head;

[0035] 400, proofing press; 410, rubber roller. DETAILED DESCRIPTION

[0036] In order to make the purposes, technical solutions and beneficial effects of the present application clearer, the present application is further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described in the present specification are only for the purpose of explaining the present application, and are not intended to limit the present application.

[0037] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0038] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0040] As described in the background, in the prior art, the surface pattern of the embossing roller is mainly engraved by CNC roll engraving machine, black glue engraving machine and other equipment. However, both of these two types of engraving processing equipment have many defects. When using CNC roll engraving machine for engraving, the processing speed is slow, the tool needs to be replaced frequently, and the tool loss is large. When using black glue engraving machine for engraving, black glue needs to be coated on the surface of the embossing roller first, then the black glue is ablated by laser, the roller surface not covered by black glue is etched by acid, and finally the black glue on the embossing roller needs to be washed off to get the finished product of the embossing roller. The process of this method is relatively complex, and the black glue is generally an organic matter, which is easy to produce carbon powder and some organic compounds after laser ablation, which is easy to pollute the processing environment. In addition, a large amount of acid liquid is needed to etch the embossing roller, especially for the processing of embossing roller with deep pattern. The acid liquid needs to be treated after processing the embossing roller, which costs a lot.

[0041] In view of this technical problem, the inventors combine the traditional CNC roll engraving machine, black glue engraving machine and laser cutting machine, and invent a laser engraving machine for embossing roller which directly processes the surface pattern of the embossing roller by laser. By using the mature process of the laser cutting head on the laser cutting machine and combining with the self-developed control software, various pattern patterns can be engraved on the embossing roller. Compared with the traditional CNC roll engraving machine and black glue engraving machine, the laser engraving machine of the present application does not use any tool, and the processing steps are simple, the processing speed is fast, and it is more environmentally friendly.

[0042] Specifically, please refer to Figure 1 The laser engraving machine for embossing roller provided by the present application is composed of a machine table 100, a pair of clamping and fixing seats, a laser engraving device 200 and a cleaning device 300. The structure of each part of the laser engraving machine is described in detail below.

[0043] Please refer to Figure 1A pair of clamping fixing bases are oppositely mounted on the surface of the machine table 100, which are used for fixing the embossing roller to be processed. Specifically, a chuck 130 is rotatably mounted on the surface of each of the pair of clamping fixing bases, and the two ends of the embossing roller to be processed are fixed on the chucks 130. The chuck 130 is preferably a four-jaw chuck, which can adapt to embossing rollers of different diameters and achieve better clamping and fixing effect. Of course, in other embodiments, other clamping and fixing devices can be used instead of the four-jaw chuck, and the utility model is not limited thereto.

[0044] In the utility model, the pair of clamping fixing bases comprises a first clamping fixing base 110 and a second clamping fixing base 120, wherein a driver such as a motor is fixed on the first clamping fixing base 110 for driving the chuck 130 on the first clamping fixing base 110 to rotate, thereby driving the embossing roller to rotate and realizing engraving processing. During the processing of the embossing roller, the rotation speed thereof is preferably controlled to be 50-300 r / min.

[0045] In some embodiments, the first clamping fixing base 110 can be fixedly mounted on the machine table 100, and the second clamping fixing base 120 can be slidably mounted on the machine table 100, so that the device can adapt to embossing rollers of different lengths. Specifically, in some embodiments, a pair of linear guides 140 are further mounted on the surface of the machine table 100, and the second clamping fixing base 120 is slidably arranged on the pair of linear guides 140, so that the clamping and fixing of embossing rollers of different lengths can be realized by adjusting the position of the second clamping fixing base 120 on the linear guides 140.

[0046] Please refer to Figures 1-2 The laser engraving device 200 comprises a Z-axis linear driving base 210 and a laser generator 230, wherein the Z-axis linear driving base 210 is fixed on the surface of the machine table 100 and is parallel to the axis of the embossing roller. The laser generator 230 is arranged on the Z-axis linear driving base 210 and can move along the Z-axis linear driving base 210, so that the processing of each part of the embossing roller can be realized. The Z-axis linear driving base 210 can be various linear driving mechanisms, and is preferably a linear motor. The linear motor has independent linear rail support, so that the stability of the linear motor when driving the laser engraving device 200 to move is higher, and the mechanical strength is higher.

[0047] In the preferred embodiments, the linear motor is provided with a magnetic scale, so that the positioning accuracy of the linear motor can be improved, and the positioning accuracy is as high as ±0.005 / 300 mm.

[0048] The laser generator 230 comprises a laser generator body 231, a laser engraving head 232 and a protective cover 233, wherein the laser generator body 231 is mounted on the Z-axis linear drive seat 210, the laser engraving head 232 is arranged at the front end of the laser generator body 231 and faces the embossing roller, and the protective cover 233 is arranged on the outer side of the laser generator body 231.

[0049] Unlike the laser generator in the black rubber engraving machine, the laser generator 230 in the utility model is a high-power laser generator, and the power is 1000-3000W, for example, can be 1000W, 2000W, 3000W and the like. The laser generator 230 with this power can directly engrave and process the surface of the metal embossing roller to form a predetermined pattern. Moreover, compared with the black rubber engraving machine, the distance between the laser engraving head 232 and the surface of the embossing roller in the equipment of the utility model is closer. The inventor finds that, in the process of processing, the distance between the laser engraving head 232 and the surface of the embossing roller needs to be controlled at 2-4cm, so that better laser engraving effect can be achieved.

[0050] In the utility model, the laser engraving head 232 can adopt an existing laser cutting head, and the laser cutting head is internally provided with an oxygen pipe for combustion-supporting blowing slag and high-pressure air heat dissipation. In addition, the laser engraving head 232 can be selected with different spot diameters, which are used for processing different sizes and depths of lines on the surface of the embossing roller. For example, in some embodiments, the spot diameter can be selected as 0.01mm, 0.03mm or 0.05mm.

[0051] In some embodiments of the utility model, the laser engraving device 200 further comprises an X-axis linear drive seat 220 fixedly arranged on the Z-axis linear drive seat 210, and the laser generator 230 is mounted on the X-axis linear drive seat 220. The X-axis linear drive seat 220 can drive the laser generator 230 to approach or move away from the embossing roller, so as to facilitate the adjustment of the distance between the laser engraving head 232 and the surface of the embossing roller. The X-axis linear drive seat 220 preferably adopts a linear slide module. Preferably, a motor support plate 211 is mounted on the Z-axis linear drive seat 210, and the X-axis linear drive seat 220 is mounted on the motor support plate 211.

[0052] The cleaning device 300 comprises a fixed support 310, a gas cylinder 320 and a pneumatic cleaning brush head 330, wherein the fixed support 310 is mounted on the motor support plate 211, the gas cylinder 320 is obliquely downwardly mounted on the fixed support 310, and the pneumatic cleaning brush head 330 is fixed to the piston rod of the gas cylinder 320 and is located above the laser engraving head 232. The pneumatic cleaning brush head 330 is in contact with the surface of the embossing roller to clean the dust and debris generated in the laser etching process.

[0053] In the process of laser engraving, the surface of the embossing roller is ablated to produce a large amount of dust debris, if not cleaned in time, not only makes the subsequent processing difficult to carry out, and affects the engraving accuracy of the surface of the embossing roller. The inventor found that only using air blowing cannot achieve good cleaning effect, therefore, in the utility model, a special cleaning device 300 is arranged to clean the dust debris.

[0054] In the utility model, the advantage of adopting the pneumatic cleaning brush head 330 lies in that the deslagging pressure is adjustable, for different depth of the pattern, the brush head can be made to enter the gap of the pattern through adjusting the pressure, so as to achieve the effect of deep cleaning, and ensure the subsequent processing and the engraving accuracy.

[0055] In some preferred embodiments, at least one mounting hole is arranged on the protective cover close to the laser engraving head 232. According to the need, a grinding head and a sand blasting head (not shown in the figure) can be selected and mounted in the mounting hole, and the grinding head and the sand blasting head are detachable. Since the surface of the embossing roller will be blackened after laser ablation, the part after engraving can be polished by arranging the grinding head, so as to improve the smoothness and brightness of the part. The sand blasting head can be used to perform sand blasting treatment on the part after polishing, so as to further improve the cleanliness of the part.

[0056] Please refer to Figure 4 In some preferred embodiments, a proofing machine 400 is detachably mounted on a pair of linear guide rails on the machine, and a rubber roller 410 is mounted on the proofing machine 400. When the embossing roller is engraved, it needs to be tested. In the embodiment, when the embossing roller is engraved and processed, the proofing machine 400 is mounted on the laser engraving machine, so that the embossing roller can be tested on the machine, which greatly simplifies the testing process of the embossing roller and saves time.

[0057] In summary, the utility model provides a novel embossing roller laser engraving machine, which directly engraves and processes the surface of the embossing roller by using high-power laser to form a predetermined pattern. Meanwhile, a pneumatic cleaning brush head is arranged above the laser generator, and the pneumatic cleaning brush head is in contact with the surface of the embossing roller. Through the physical cleaning effect of the pneumatic cleaning brush head, the dust debris generated in the laser etching process can be effectively removed, so as to ensure the subsequent processing and the engraving accuracy. Compared with the existing black rubber engraving machine, the embossing roller laser engraving machine only needs one-step laser direct engraving to complete the pattern processing, which greatly simplifies the processing steps, improves the processing speed, reduces the cost, and is more environmentally friendly. Compared with the existing CNC roll engraving machine, the embossing roller laser engraving machine of the utility model does not need to use any tool, and the tool does not need to be replaced during processing, so the processing speed is faster, and the dust generated is less.

[0058] To sum up, although the utility model has disclosed above with preferred embodiment, the preferred embodiment above is not used to limit the utility model, ordinary skilled in the art can make various changes and decorations without departing from the spirit and scope of the utility model, therefore the protection scope of the utility model is accurate with the range defined by claim.

Claims

1. An embossing roller laser engraver characterized by, include: Machine tool; A first clamping and fixing seat and a second clamping and fixing seat are respectively disposed on the surface of the machine tool, and chucks are rotatably mounted on opposite surfaces. The embossing roller to be processed is fixed between the pair of chucks. A driver for driving the chucks to rotate is fixed on the first clamping and fixing seat. A laser engraving device includes a Z-axis linear drive base and a laser generator. The Z-axis linear drive base is fixed to the surface of the machine table and parallel to the axis of the embossing roller. The laser generator includes a laser generator body, a laser engraving head, and a protective cover. The laser generator body is mounted on the Z-axis linear drive base. The laser engraving head is located at the front end of the laser generator body and faces the embossing roller. The protective cover covers the outside of the laser generator body. The cleaning device includes a fixed bracket, a cylinder, and a pneumatic cleaning brush head; the fixed bracket is mounted on the Z-axis linear drive seat, the cylinder is mounted obliquely downward on the fixed bracket, and the pneumatic cleaning brush head is fixed on the piston rod of the cylinder and located above the laser engraving head; the pneumatic cleaning brush head contacts the surface of the embossing roller to clean the dust and debris generated during the laser etching process.

2. A laser engraver for embossing rollers according to claim 1, characterized in that, The surface of the machine tool is also equipped with a pair of linear guide rails, and the second clamping and fixing seat is slidably disposed on the pair of linear guide rails.

3. The laser engraver for embossing rollers according to claim 1, characterized in that, The driver is a motor; and / or, The chuck is a four-jaw chuck.

4. The laser engraver for embossing rollers according to claim 1, characterized in that, The laser engraving device also includes an X-axis linear drive base fixed on the Z-axis linear drive base, and the laser generator is mounted on the X-axis linear drive base.

5. A laser engraver for embossing rollers according to claim 4, characterized in that A motor support plate is mounted on the Z-axis linear drive base, and both the X-axis linear drive base and the fixed bracket are mounted on the motor support plate.

6. The laser engraver for embossing rollers according to claim 1, characterized in that, The laser generator is a high-power laser generator with a power of 1000~3000W.

7. The laser engraver for embossing rollers according to claim 1, characterized in that, The laser engraving head has a spot diameter of 0.01mm, 0.03mm, or 0.05mm; and / or, The distance between the laser engraving head and the surface of the embossing roller is 2-4 cm.

8. The laser engraver for embossing rollers according to claim 1, characterized in that, The Z-axis linear drive unit is a linear motor, and the linear motor is equipped with a magnetic scale.

9. The laser engraver for embossing rollers according to claim 1, characterized in that, The protective cover is also provided with at least one mounting hole, in which a grinding head and / or a sandblasting head can be detachably mounted.

10. The laser engraver for embossing rollers according to claim 2, characterized in that, A prototyping machine can also be detachably mounted on the pair of linear guides.

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