Laser marking equipment

Abstract

The laser marking equipment comprises a main driving roller assembly, a tension control assembly, a laser marking assembly and a coding roller assembly which are sequentially arranged in the belt conveying direction, the coding roller assembly is used for detecting the rear-section belt conveying speed of a material belt, and the main driving roller assembly controls the front-section belt conveying speed of the material belt according to the rear-section belt conveying speed. The tension control assembly comprises a tension control module and a tension detection module, the tension detection module is used for detecting the tension of the material belt, and the tension control module adjusts the tension of the material belt at the next moment according to the tension of the material belt. According to the technical scheme, in the laser marking process of the laser marking assembly, the material belt runs stably, the belt conveying speed is stable, the laser marking pattern is clear, and the information of the pattern can be rapidly and accurately obtained when the coiled material is used next time.

Description

Technical Field

[0001] The present application relates to the field of laser marking technology, and in particular to a laser marking device. Background Art

[0002] In the field of coil manufacturing technology, in order to meet the needs of marking and identifying defective NG materials in the process from front-end feeding to product molding and manufacturing, it is necessary to use laser to mark the coil after the coil manufacturing is completed, so as to facilitate the subsequent process to identify and record the finished coil information.

[0003] Labeling machines and laser marking machines are two commonly used marking equipment. Labeling machines use label paper for marking; this method has the following defects: single label type, little product information that can be marked, impact on the use of finished products, inability to classify and trace, waste of label paper each time, mechanical label paper accuracy error > 20mm, easy to fall off, etc. Laser marking machines use high-energy-density lasers to partially irradiate the workpiece, vaporize the surface material or cause a chemical reaction that changes color, thereby leaving a permanent mark.

[0004] For the laser marking of coiled materials, tension control is currently mainly achieved through the speed difference between the reeling and unreeling motors. Affected by the weight and inertia of the coiled material, the tension and speed of the tape fluctuate greatly, which is not conducive to laser marking on the surface of the tape and affects the success rate of marking. Utility Model Content

[0005] The main purpose of the present application is to provide a laser marking device, which aims to improve the problem that the existing laser marking equipment may cause unclear laser marking patterns due to various factors.

[0006] To achieve the above-mentioned purpose, the laser marking device proposed in the present application comprises a main drive roller assembly, a tension control assembly, a laser marking assembly and an encoding roller assembly which are sequentially arranged along the belt running direction;

[0007] Wherein, the encoding roller assembly is used to detect the running speed of the rear section of the material belt, and the main driving roller assembly controls the running speed of the front section of the material belt according to the running speed of the rear section;

[0008] The tension control component includes a tension control module and a tension detection module. The tension detection module is used to detect the tension of the material strip. The tension control module adjusts the size of the material strip tension at the next moment according to the material strip tension.

[0009] In some embodiments of the present application, the main drive roller assembly includes a main drive roller, a first pressure wheel and a first cylinder, the first pressure wheel is arranged on the outer periphery of the main drive roller, the first pressure wheel is arranged on the first cylinder, and the first cylinder is used to drive the first pressure wheel to move toward the main drive roller to press the material strip onto the main drive roller.

[0010] In some embodiments of the present application, a side plate is provided on the periphery of the main drive roller, a guide column is provided on the side plate, a roller seat is provided on the guide column, the first pressure wheel is provided on the roller seat, the body of the first cylinder is provided on the side plate, and the output shaft of the first cylinder is connected to the roller seat.

[0011] In some embodiments of the present application, the tension control module includes a rotating shaft, a swing roller, a swing rod, and a low-friction cylinder, the swing roller is connected to the rotating shaft through the swing rod, and the low-friction cylinder is connected to the rotating shaft through a connecting rod;

[0012] When the swing roller swings under the action of the material belt, the low-friction cylinder applies an anti-swinging force to the swing roller through the connecting rod, the rotating shaft and the swing rod.

[0013] In some embodiments of the present application, the encoding roller assembly includes an encoding roller, an encoder, a second pressure wheel and a second cylinder; the encoder is coaxially connected to the encoding roller; the second pressure wheel is arranged on the periphery of the encoding roller, the second pressure wheel is arranged on the second cylinder, and the second cylinder is used to drive the second pressure wheel to move toward the encoding roller to press the material tape onto the encoding roller.

[0014] In some embodiments of the present application, a first detection component is provided on the feeding side of the laser marking component for detecting defects in the material strip.

[0015] In some embodiments of the present application, a second detection component is provided on the discharge side of the laser marking component for detecting the marking condition of the material strip.

[0016] In some embodiments of the present application, a cleaning component is provided between the feeding side of the second detection component and the laser marking component for cleaning the material tape.

[0017] In some embodiments of the present application, the cleaning component is any one of a brush component, a magnetic rod component and an air knife component.

[0018] In some embodiments of the present application, both the first detection component and the second detection component are visual detection devices.

[0019] This application adopts the above technical solution, the encoding roller assembly is used to detect the speed of the rear section of the material belt, the main drive roller assembly controls the speed of the front section of the material belt according to the speed of the rear section, the tension control assembly includes a tension control module and a tension detection module, the tension detection module is used to detect the tension of the material belt, and the tension control module adjusts the size of the material belt tension at the next moment according to the tension of the material belt. In this way, the tension control module adjusts the size of the material belt tension at the next moment to ensure the stability of the material belt tension, so that the main drive roller assembly drives the material belt to run stably and the surface is flat. At the same time, the main drive roller assembly can adjust the front section of the material belt according to the information, thereby changing the overall speed of the material belt and reducing the fluctuation of the speed of the belt, so that the laser marking assembly can run stably and the belt speed is stable during the laser marking process, and the laser marked pattern is clear, and the coil can quickly and accurately obtain the information of the pattern when it is used next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of an embodiment of a laser marking device of the present application;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the middle main drive roller assembly;

[0023] Figure 3 for Figure 1 Schematic diagram of the structure of the tension control module;

[0024] Figure 4 for Figure 1 Another structural diagram of the tension control module from another perspective;

[0025] Figure 5 for Figure 1 The structural diagram of the coding roller assembly;

[0026] Figure 6 for Figure 1 Schematic diagram of the structure of the medium tension detection module.

[0027] Description of Figure Numbers:

[0028] 100. Laser marking equipment; 10. Main drive roller assembly; 11. Main drive roller; 12. First pressure roller; 13. First cylinder; 14. Side plate; 15. Guide column; 16. Roller seat; 20. Tension control assembly; 21. Tension control module; 211. Rotating shaft; 212. Swing roller; 213. Swing rod; 214. Low friction cylinder; 215. Connecting rod; 22. Tension detection module; 221. Driven roller; 222. Mounting plate; 223. Tension detector; 30. Laser marking assembly; 40. Encoding roller assembly; 41. Encoding roller; 42. Encoder; 43. Second pressure roller; 44. Second cylinder; 50. First detection assembly; 60. Second detection assembly; 70. Cleaning assembly.

[0029] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0033] The utility model proposes a laser marking device 100, which is applied to coil production and manufacturing. It uses a high-energy-density laser beam to mark the material strip to achieve the purpose of marking the material strip and record the production information of the material strip. The production information can be the production date, production conditions, material strip defect information, etc. Specifically, a QR code, bar code, etc. can be printed on the material strip to record the production information. Please refer to Figure 1 In the embodiment of the utility model, the laser marking device 100 includes a main driving roller assembly 10, a tension control assembly 20, a laser marking assembly 30 and an encoding roller assembly 40 which are sequentially arranged along the belt running direction.

[0034] The encoding roller assembly 40 is used to detect the speed of the rear section of the material belt, and the main drive roller assembly 10 controls the speed of the front section of the material belt according to the speed of the rear section of the material belt. The main drive roller assembly 10 is used to drive the material belt to flow in a predetermined direction, so as to flow through various positions of the laser marking device 100 in sequence to complete different processes.

[0035] It can be understood that the main drive roller assembly 10 controls the front section tape speed of the material belt according to the rear section tape speed, which means that the main drive roller assembly 10 can obtain the information of the front section tape speed, and the main drive roller assembly 10 can adjust the front section tape speed of the material belt according to the information, thereby changing the overall tape speed of the material belt, so as to realize the closed-loop control of the tape speed by the main drive roller assembly 10 and the encoding roller assembly 40, and reduce the fluctuation of the tape speed.

[0036] Among them, the main drive roller assembly 10 can be communicatively connected with the encoding roller assembly 40 to directly obtain the information of the rear-end tape speed detected by the encoding roller assembly 40. The laser marking equipment 100 can also include a controller. The main drive roller assembly 10 and the encoding roller assembly 40 are communicatively connected, and the main drive roller assembly 10 can indirectly obtain the detection information of the encoding roller assembly 40 through the controller.

[0037] The tension control assembly 20 includes a tension control module 21 and a tension detection module 22. The tension detection module 22 is used to detect the tension of the material strip, and the tension control module 21 adjusts the magnitude of the material strip tension at the next moment according to the material strip tension.

[0038] The tension control assembly 20 is located in the middle of the main drive roller assembly 10 and the encoding roller assembly 40 in the tape running direction. The tension detection module 22 can detect the tension of the material tape after passing through the main drive roller assembly 10. The information on the material tape tension can better reflect the real-time state of the material tape. The tension control module 21 adjusts the size of the material tape tension at the next moment according to the information on the material tape tension to achieve closed-loop control of the material tape tension and reduce fluctuations in the material tape tension.

[0039] In the present application, the encoding roller assembly 40 is used to detect the tape running speed of the rear section of the material belt, the main drive roller assembly 10 controls the tape running speed of the front section of the material belt according to the tape running speed of the rear section, and the tension control assembly 20 includes a tension control module 21 and a tension detection module 22. The tension detection module 22 is used to detect the tension of the material belt, and the tension control module 21 adjusts the size of the material belt tension at the next moment according to the material belt tension. In this way, the tension control module 21 adjusts the size of the material belt tension at the next moment to ensure that the material belt tension is stable, so that the main drive roller assembly 10 drives the material belt to run stably and the surface is flat. At the same time, the main drive roller assembly 10 can adjust the tape running speed of the front section of the material belt according to the information, thereby changing the overall tape running speed of the material belt and reducing the fluctuation of the tape running speed, so that the laser marking assembly 30 can run stably and the tape running speed is stable during the laser marking process, and the laser marking pattern is clear, and the coil can quickly and accurately obtain the information of the pattern when it is used next time.

[0040] In some examples, such as Figure 1 and Figure 2 As shown, the main drive roller assembly 10 includes a main drive roller 11, a first pressure wheel 12 and a first cylinder 13. The first pressure wheel 12 is arranged on the periphery of the main drive roller 11, and the first pressure wheel 12 is arranged on the first cylinder 13. The first cylinder 13 is used to drive the first pressure wheel 12 to move toward the main drive roller 11 to press the material strip onto the main drive roller 11.

[0041] With such an arrangement, the first pressure wheel 12 presses the material belt against the main drive roller 11, which can avoid insufficient friction between the main drive roller 11 and the material belt, thereby preventing the material belt from slipping and affecting the main drive roller assembly 10 driving the material belt flow, thereby improving the accuracy of the main drive roller assembly 10 in controlling the front-end tape speed of the material belt according to the rear-end tape speed, and ensuring the detection accuracy of the tension detection module 22.

[0042] In some examples, such as Figure 1 and Figure 2 As shown, a side plate 14 is provided on the outer periphery of the main driving roller 11, a guide column 15 is provided on the side plate 14, a roller seat 16 is provided on the guide column 15, the first pressure wheel 12 is provided on the roller seat 16, the body of the first cylinder 13 is provided on the side plate 14, and the output shaft of the first cylinder 13 is connected to the roller seat 16.

[0043] With such arrangement, under the action of the guide column 15, the first pressure wheel 12 can move accurately and stably toward the main drive roller 11, so as to better press the material belt against the peripheral side of the main drive roller 11, so as to further improve the accuracy of the main drive roller assembly 10 in controlling the front section running speed of the material belt according to the rear section running speed.

[0044] In some examples, such as Figure 3 and Figure 4As shown, the tension control module 21 includes a rotating shaft 211, a swing roller 212, a swing rod 213 and a low-friction cylinder 214. The swing roller 212 is connected to the rotating shaft 211 through the swing rod 213, and the low-friction cylinder 214 is connected to the rotating shaft 211 through a connecting rod 215. When the swing roller 212 swings under the action of the material belt, the low-friction cylinder 214 applies an anti-swinging force to the swing roller 212 through the connecting rod 215, the rotating shaft 211 and the swing rod 213.

[0045] With such arrangement, the low-friction cylinder 214 is used to ensure that the tension provided by the tension control module 21 is stable. When the tension detection module 22 detects that the tension of the material strip is insufficient, the low-friction cylinder 214 applies an anti-swinging force to the swing roller 212 through the connecting rod 215, the rotating shaft 211 and the swing rod 213, thereby providing sufficient tension for the material strip to ensure stable tension of the material strip.

[0046] In some examples, such as Figure 5 As shown, the encoding roller assembly 40 includes an encoding roller 41, an encoder 42, a second pressure wheel 43 and a second cylinder 44; the encoder 42 is coaxially connected to the encoding roller 41; the second pressure wheel 43 is arranged on the outer periphery of the encoding roller 41, and the second pressure wheel 43 is arranged on the second cylinder 44, and the second cylinder 44 is used to drive the second pressure wheel 43 to move toward the encoding roller 41 to press the material tape onto the encoding roller 41.

[0047] In this configuration, the second pressure wheel 43 presses the material belt against the encoding roller 41, which can avoid the insufficient friction between the encoding roller 41 and the material belt, so as to prevent the material belt from slipping and affecting the relative motion relationship between the encoding roller 41 and the material belt. The encoder 42 can obtain the actual running speed of the material belt by detecting the rotation information of the encoding roller 41, that is, the encoding roller assembly 40 can measure the running speed more accurately to reduce the fluctuation of the running speed.

[0048] In some examples, such as Figure 6 As shown, the tension detection assembly includes a driven roller 221, a mounting plate 222 and a tension detector 223. Both ends of the driven roller 221 are rotatably mounted on the mounting plate 222 through the tension detector 223. The driven roller 221 abuts against the material belt. The tension detector 223 is used to measure the force of the material belt acting on the driven roller 221 to detect the tension of the material belt.

[0049] With such an arrangement, the force exerted by the material belt on the driven roller 221 can be detected in real time by the tension detector 223, so as to detect the tension of the material belt in real time, aiming to improve the detection accuracy of the tension detection component in real-time monitoring the tension of the material belt, thereby feeding back more accurate data to the main drive roller assembly 10, indirectly improving the accuracy of the closed-loop control of the tension.

[0050] In some examples, such as Figure 1As shown, a first detection component 50 is provided on the feeding side of the laser marking component 30 for detecting defects of the material strip.

[0051] There are many types of the first detection component 50, and the first detection component 50 includes but is not limited to an optical detection device, an X-ray detection device, a magnetic particle detection device, and an ultrasonic detection device. When the first detection component 50 includes an optical detection device, the surface of the material strip can be scanned by a high-resolution camera or a laser scanner to detect defects such as scratches, bubbles, particles, etc. When the first detection component 50 includes an X-ray detection device, X-rays can be used to penetrate the material strip, and defects such as foreign matter and uneven density can be identified by detecting the attenuation of the X-rays. When the first detection component 50 includes a magnetic particle detection device, magnetic powder can be applied to the surface, and the magnetic powder aggregation under the guidance of the magnetic field can be used to detect defects such as cracks and pores. When the first detection component 50 includes an ultrasonic detection device, the characteristics of ultrasonic waves propagating inside the material strip can be used to detect defects inside the coil, such as bubbles and interlayers.

[0052] With such arrangement, the first detection component 50 can detect defects of the material strip to obtain defect information of the material strip, and the information can be transmitted to the laser marking component 30, which records the information on the surface of the material strip by laser marking.

[0053] In some examples, such as Figure 1 As shown, considering that the laser marking component 30 may miss marking or make marking errors, a second detection component 60 is provided on the discharge side of the laser marking component 30 to detect the marking condition of the material strip. With such a configuration, the marking condition can be detected by the second detection component 60. When abnormal marking is found, re-marking can be performed in the subsequent process of the second detection device, or an alarm can be issued to shut down the machine for maintenance.

[0054] In some examples, such as Figure 1 As shown, a cleaning component 70 is provided between the feeding side of the second detection component 60 and the laser marking component 30 for cleaning the material belt. In this way, the material belt can be cleaned by the cleaning component 70 so that the surface of the material belt is clean, thereby avoiding the influence of dirt on the second detection component 60, and indirectly improving the accuracy of the second detection component 60.

[0055] Preferably, the cleaning assembly 70 is any one of a brush assembly, a magnetic rod assembly and an air knife assembly.

[0056] In some examples, the first detection component 50 and the second detection component 60 are both visual detection devices. The visual sensor includes but is not limited to a laser scanner, a linear array and a planar array CCD camera, a TV camera, etc. With such a configuration, it is possible to determine whether the material strip has defects and marks through the image information of the material strip.

[0057] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A laser marking device, characterized in that: The laser marking device comprises a main drive roller assembly, a tension control assembly, a laser marking assembly and an encoding roller assembly which are sequentially arranged along the belt running direction; Wherein, the encoding roller assembly is used to detect the running speed of the rear section of the material belt, and the main driving roller assembly controls the running speed of the front section of the material belt according to the running speed of the rear section; The tension control component includes a tension control module and a tension detection module. The tension detection module is used to detect the tension of the material strip. The tension control module adjusts the size of the material strip tension at the next moment according to the material strip tension.

2. The laser marking device according to claim 1, characterized in that: The main drive roller assembly includes a main drive roller, a first pressure wheel and a first cylinder, wherein the first pressure wheel is arranged on the outer periphery of the main drive roller, the first pressure wheel is arranged on the first cylinder, and the first cylinder is used to drive the first pressure wheel to move toward the main drive roller to press the material strip onto the main drive roller.

3. The laser marking device according to claim 2, characterized in that: The outer periphery of the main driving roller is provided with a side plate, the side plate is provided with a guide column, a roller seat is provided on the guide column, the first pressure wheel is provided on the roller seat, the body of the first cylinder is provided on the side plate, and the output shaft of the first cylinder is connected to the roller seat.

4. The laser marking device according to claim 1, characterized in that: The tension control module includes a rotating shaft, a swing roller, a swing rod and a low-friction cylinder, wherein the swing roller is connected to the rotating shaft through the swing rod, and the low-friction cylinder is connected to the rotating shaft through a connecting rod; When the swing roller swings under the action of the material belt, the low-friction cylinder applies an anti-swinging force to the swing roller through the connecting rod, the rotating shaft and the swing rod.

5. The laser marking device according to claim 1, characterized in that: The encoding roller assembly includes an encoding roller, an encoder, a second pressure wheel and a second cylinder; the encoder is coaxially connected to the encoding roller; the second pressure wheel is arranged on the periphery of the encoding roller, the second pressure wheel is arranged on the second cylinder, and the second cylinder is used to drive the second pressure wheel to move toward the encoding roller to press the material tape onto the encoding roller.

6. The laser marking device according to any one of claims 1 to 5, characterized in that: The feeding side of the laser marking assembly is provided with a first detection assembly for detecting defects of the material strip.

7. The laser marking device according to claim 6, characterized in that: A second detection component is provided on the discharge side of the laser marking component for detecting the marking condition of the material strip.

8. The laser marking device according to claim 7, characterized in that: A cleaning component is provided between the feeding side of the second detection component and the laser marking component for cleaning the material belt.

9. The laser marking device according to claim 8, characterized in that: The cleaning component is any one of a brush component, a magnetic rod component and an air knife component.

10. The laser marking device according to claim 7, characterized in that: The first detection component and the second detection component are both visual detection devices.

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