An automatic laser marking machine

Abstract

The application relates to the technical field of marking equipment, in particular to an automatic laser marking machine which comprises a first rack, a cabinet and a second rack which are sequentially connected, and further comprises a unwinding mechanism and a soaking mechanism which are borne on the first cabinet, a laser marking mechanism and a control system which are built in the cabinet, and a tensioning mechanism and a winding mechanism which are borne on the second rack; the unwinding mechanism and the winding mechanism are both connected with a first driving assembly, and the cabinet is respectively provided with a material pulling mechanism which is driven by a second driving assembly at the front and the back; cloth starts from the unwinding mechanism, a wet layer is formed on the surface of the coiled material in the liquid storage tank of the soaking mechanism, the wet layer can quickly absorb laser heat and evaporate, temperature is reduced, and thermal damage is reduced; then the cloth sequentially passes through two material pulling mechanisms, the laser marking mechanism, the tensioning mechanism and the winding mechanism, a circuitous material transportation path is formed, and processing and recycling are completed. The application has the characteristics of guaranteeing product quality.

Description

Technical Field

[0001] This application relates to the field of marking equipment technology, and in particular to an automatic laser marking machine. Background Technology

[0002] The core function of a laser marking machine is to evaporate the surface of materials using laser energy to form clear, wear-resistant patterns or text. In manufacturing, it is primarily used to mark production dates, product numbers, brand logos, and other information on various roll materials, enabling product traceability and brand anti-counterfeiting. Due to its advantages such as non-contact, high precision, and permanent marking, it has been widely used in industries such as electronics, packaging, and automobiles.

[0003] In related technologies, automatic laser marking machines typically consist of an unwinding mechanism, a marking mechanism, a rewinding mechanism, and a control system. After the roll material is released by the unwinding mechanism, it is directly conveyed to the marking mechanism for laser marking. After marking, the rewinding mechanism rewinds the material. However, for most heat-sensitive roll materials, such as fabrics, high-energy lasers can easily cause localized high temperatures on the material surface, leading to thermal damage (such as yellowing edges, scorch marks, or even carbonization). Existing solutions include reducing laser power or slowing down the marking speed, but this sacrifices marking efficiency and clarity. Even using cooling airflow for assisted cooling has limited effectiveness for continuously conveyed roll materials, making it difficult to completely avoid yellowing edges and scorching.

[0004] Existing laser marking machines suffer from the following problems: Dry marking equipment directly burns the surface of the rolled material with a laser. Although the structure is simple, it is prone to thermal damage, which not only affects the appearance quality and market competitiveness of the product, but may also damage the material structure, leading to a decline in subsequent performance and causing economic losses to enterprises. Furthermore, existing cooling methods cannot achieve both high efficiency and no thermal damage, thus restricting high-speed, high-quality production. Summary of the Invention

[0005] To ensure product quality, this application provides an automatic laser marking machine.

[0006] The automatic laser marking machine provided in this application adopts the following technical solution: An automatic laser marking machine includes a first frame, a cabinet, and a second frame connected in sequence. It is characterized by further including an unwinding mechanism and an immersion mechanism mounted on the first cabinet, a laser marking mechanism and a control system built into the cabinet, and a tensioning mechanism and a rewinding mechanism mounted on the second frame. Both the unwinding mechanism and the rewinding mechanism are connected to a first drive assembly. A material pulling mechanism driven by a second drive assembly is respectively arranged at the front and rear of the cabinet. The fabric starts from the unwinding mechanism, forms a wet layer on the surface of the roll in the liquid storage tank of the immersion mechanism, and then sequentially passes through the two material pulling mechanisms, the laser marking mechanism, the tensioning mechanism, and the rewinding mechanism, forming a tortuous material transport path and completing the processing and recycling.

[0007] By adopting the above technical solution, the immersion mechanism imparts a wet layer to the fabric surface that can quickly absorb and evaporate the heat generated by the laser, effectively reducing the temperature of the processing area and minimizing heat damage at the source. This ensures clean marking edges without scorch marks. Combined with the meandering material transport path and the coordinated action of multiple drive, tension, and pulling mechanisms, the stability of material transport and the processing accuracy of laser marking are improved. All mechanisms are integrated into the frame and cabinet structure, and the control system coordinates the automated and continuous laser marking and recycling of fabric rolls, improving production efficiency while ensuring product quality.

[0008] Preferably, a web-correcting component is connected below the unwinding mechanism. The web-correcting component includes a position sensor, a slide rail structure, and a web-correcting motor. The position sensor is used to monitor the edge position of the roll material in real time. The slide rail structure includes two parallel linear guide rails. The web-correcting motor slides left and right between the two linear guide rails through a connector and is connected to the outer frame of the unwinding mechanism through a lead screw structure. The bottom of the outer frame of the unwinding mechanism is provided with a slider that slides and cooperates with the linear guide rails.

[0009] By adopting the above technical solution, when the roll material deviation is detected, the correction motor drives the lead screw structure, which in turn drives the outer frame of the unwinding mechanism. With the help of the sliding cooperation between the bottom slider of the frame and the parallel linear guide rail, the unwinding mechanism can be smoothly adjusted left and right, and the roll material conveying deviation can be corrected in time. This ensures that the roll material is accurately conveyed along the preset path, reduces problems such as subsequent marking misalignment, material waste or equipment jamming caused by deviation, and ensures the stability of the overall processing flow and the marking accuracy.

[0010] Preferably, the liquid storage tank is a cuboid structure with a sloping transition at the top, the sloping surface facing the material pulling mechanism; the soaking assembly further includes a guide roller group, the guide roller group including multiple guide rollers, wherein at least one of the guide rollers is located above the liquid storage tank, fixed to the inner wall of the liquid storage tank, and can slide up and down along the first frame; a liquid level sensor and a circulation filtration system are also provided at the bottom of the liquid storage tank.

[0011] By adopting the above technical solutions, the inclined transition structure of the liquid storage tank facilitates the smooth introduction of the fabric from the soaking area into the feeding mechanism, reducing the scratching damage to the fabric edges; the guide roller group, through different position layouts, can not only allow the fabric to be fully immersed in the liquid to form a wet layer, but also flexibly adjust the soaking depth and conveying tension of the fabric through the sliding guide rollers, adapting to the wetting needs of fabrics of different thicknesses and materials; the liquid level sensor monitors the liquid level in real time, and works with the circulating filtration system to circulate and filter the liquid in the liquid storage tank, maintaining stable liquid level and liquid cleanliness, and reducing the impact of uneven soaking or impurities.

[0012] Preferably, the material pulling mechanism includes a drive roller and a driven roller rotatably connected to the first frame, and a spring-type pressure adjusting component is connected between the drive roller and the driven roller. The spring-type pressure adjusting component is used to adjust the roller spacing to change the bonding pressure applied to the fabric.

[0013] By adopting the above technical solution, the active roller provides conveying power and forms a clamping structure with the driven roller to drive the fabric forward. By flexibly adjusting the spring-type pressure regulating component, the damage and deformation of the fabric caused by excessive pressure can be reduced, or the fabric can slip, be delayed or shifted due to insufficient pressure. This allows the fabric to move smoothly at a preset speed in the meandering conveying path, providing a reliable material conveying guarantee for the precise processing of subsequent laser marking processes.

[0014] Preferably, the first drive component includes a first reducer and a first servo motor that are connected by transmission, and the second drive component includes a second reducer and a second servo motor that are connected by transmission; the output torque of the first drive component is greater than that of the second drive component.

[0015] By adopting the above technical solutions, the first drive component outputs greater torque, which is suitable for the large load requirements of the unwinding and rewinding mechanism to drive the start, stop and rewind of the roll material, ensuring smooth unwinding and tight rewinding of the roll material; the second drive component outputs less torque, so as to accurately match the light load requirements of the material pulling mechanism that only clamps and conveys the fabric, and finely control the fabric conveying speed and rhythm.

[0016] Preferably, the laser marking mechanism includes a laser marking head and a cross-shaped moving module, wherein the laser marking head moves left and right and rises and falls up and down inside the cabinet via the cross-shaped moving module.

[0017] By adopting the above technical solution, the cross-shaped moving module drives the laser marking head to move left and right and up and down in the cabinet to adapt to fabric rolls of different widths, align the marking area of ​​the fabric, and flexibly adjust the distance between the marking head and the fabric surface. This ensures the laser focal length is accurate and guarantees the clarity and precision of the marking pattern, realizing multi-dimensional precise positioning and flexible processing of the laser marking head.

[0018] Preferably, a dust collection mechanism is provided next to the working area of ​​the laser marking mechanism. The dust collection mechanism connects the inside and outside of the cabinet. Its filtration system adopts a membrane filter cartridge structure and forms a vortex airflow path through multiple sets of built-in guide plates.

[0019] By adopting the above technical solution, the dust collection mechanism can efficiently capture the dust and hot smoke generated by the laser marking fabric, and use the filtration system with a membrane filter cartridge structure to perform high-precision filtration of the inhaled dust and particles before expelling the filtered clean air. This not only protects the precision components in the cabinet from dust and smoke pollution and ensures clear optical path and stable operation of the equipment, but also improves the workshop environment, reduces the harm of dust to operators, and reduces the frequency of equipment cleaning and maintenance.

[0020] Preferably, the tensioning mechanism includes a plurality of tensioning rollers rotatably connected to the second frame, the plurality of tensioning rollers forming an S-shaped material transfer channel with the winding mechanism, and at least one tensioning roller can slide up and down along the second frame.

[0021] By adopting the above technical solutions, the contact path between the fabric and the roller is extended, friction is increased, and slippage during conveying is reduced, thereby ensuring the synchronous conveying of the fabric and the winding mechanism. The tension roller, which can slide up and down, can flexibly adjust its position according to the real-time tension changes of the fabric, achieving adaptive tension balance and reducing the occurrence of fabric stretching deformation and breakage due to excessive tension, or fabric wrinkling and conveying deviation due to insufficient tension. It provides stable and controllable tension support for the fabric winding process, ensuring that the wound material is tight, flat, and free of looseness after winding.

[0022] Preferably, the cabinet has an adjustment window on the outer wall facing the laser marking mechanism. The upper edge of the adjustment window is hinged to a structurally matching flip cover. The upper surface of the flip cover is fixed with a handle and connected to the cabinet by a pneumatic strut. The second frame is also provided with an adjustment station in front of the adjustment window. The adjustment station is raised so that the operator can naturally reach into the adjustment window and have their line of sight level with it.

[0023] By adopting the above technical solution, the debugging window provides a direct operating channel for the maintenance and parameter adjustment of the laser marking mechanism. The flip cover is hinged and supported by a pneumatic strut, and can be easily opened and closed and positioned at any angle with the handle. The height of the height-adjusted debugging station is precisely matched with the height of the debugging window, which meets the requirements of ergonomics, reduces fatigue operations such as bending over and raising hands, and improves the comfort and safety of debugging operations.

[0024] Preferably, the control system includes a control panel and a computer. The control panel is embedded in the side wall of the cabinet and close to the debugging window. The computer is fixed to one side of the control panel by a mounting bracket and can rotate relative to the mounting bracket.

[0025] By adopting the above technical solutions, convenient control, real-time debugging, and human-machine-friendly operation of laser marking operations are achieved. Operators can complete parameter settings, start-stop control, and other operations from the control panel at the debugging station without frequent movement. The computer can be rotated and adjusted by mounting bracket, which can flexibly adapt to the viewing angle and operating habits of different operators, ensuring that the display interface is clear and the operation is convenient, effectively improving the efficiency of equipment operation.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The soaking mechanism imparts a wet layer to the fabric surface, which can quickly absorb and evaporate the heat generated by the laser, effectively reducing the temperature of the processing area and minimizing heat damage at the source. This ensures clean marking edges without scorch marks. Combined with the meandering material transport path and the coordinated action of multiple drive, tension, and pulling mechanisms, it improves the stability of material transport and the accuracy of laser marking. All mechanisms are integrated into the frame and cabinet structure, and the control system coordinates the automated and continuous laser marking and recycling of fabric rolls, improving production efficiency while ensuring product quality. 2. The inclined transition structure of the liquid storage tank facilitates the smooth introduction of the fabric from the soaking area into the feeding mechanism, reducing scratch damage to the fabric edges; the guide roller assembly, through different position layouts, not only allows the fabric to be fully immersed in the liquid to form a wet layer, but also allows for flexible adjustment of the fabric soaking depth and conveying tension through sliding guide rollers, adapting to the wetting needs of fabrics of different thicknesses and materials; the liquid level sensor monitors the liquid level in real time, and works with the circulating filtration system to circulate and filter the liquid in the storage tank, maintaining stable liquid level and liquid cleanliness, reducing the impact of uneven soaking or impurities; 3. The dust collection mechanism can efficiently capture dust and hot smoke generated by laser marking fabric, and use a filtration system with a membrane filter cartridge structure to perform high-precision filtration of the inhaled dust and particles before expelling the filtered clean air; this not only protects the precision components in the cabinet from dust and smoke pollution, ensuring clear optical path and stable operation of the equipment, but also improves the workshop environment, reduces the harm of dust to operators, and reduces the frequency of equipment cleaning and maintenance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram illustrating the cooperative relationship between the winding mechanism and the correction component in an embodiment of this application; Figure 3 This is a schematic diagram illustrating the cooperation relationship between the soaking mechanism and the material pulling mechanism in the embodiments of this application; Figure 4 This is a schematic diagram of the overall structure of the laser marking mechanism in the embodiments of this application; Figure 5 This is a schematic diagram illustrating the cooperation relationship between the material pulling mechanism, the tensioning mechanism, and the winding mechanism in the embodiments of this application.

[0028] Figure 6 This is a schematic diagram of the overall structure of the cabinet in the embodiments of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. First frame; 2. Second frame; 21. Debugging station; 3. Cabinet; 31. Debugging window; 32. Flip-top cover; 321. Handle; 33. Pneumatic strut; 4. Unwinding mechanism; 41. Slider; 5. Correction assembly; 51. Slide rail structure; 52. Correction motor; 53. Connector; 54. Screw structure; 6. First drive assembly; 7. Second drive assembly; 8. Immersion mechanism; 81. Guide roller group; 82. Liquid storage tank; 821. Inclined surface; 9. Material pulling mechanism; 91. Driving roller; 92. Driven roller; 93. Pressure regulating assembly; 10. Laser marking mechanism; 101. Laser marking head; 102. Cross moving module; 11. Dust extraction mechanism; 12. Control system; 121. Control panel; 122. Computer; 13. Tensioning mechanism; 14. Rewinding mechanism. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0031] This application discloses an automatic laser marking machine. (Refer to...) Figure 1An automatic laser marking machine includes a first frame 1, a cabinet 3, and a second frame 2 connected in sequence. The bottom of the first frame 1, cabinet 3, and second frame 2 are evenly distributed with feet and casters. It also includes an unwinding mechanism 4 and an immersion mechanism 8 supported on the first cabinet 3, a laser marking mechanism 10 and a control system 12 built into the cabinet 3, and a tensioning mechanism 13 and a winding mechanism 14 supported on the second frame 2. The unwinding mechanism 4 and the winding mechanism 14 are both connected to a first drive assembly 6. The front and rear of the cabinet 3 are respectively fixed with material pulling mechanisms 9 driven by a second drive assembly 7. The fabric starts from the unwinding mechanism 4, forms a wet layer on the surface of the roll in the liquid storage tank 82 of the immersion mechanism 8, and then passes through the two material pulling mechanisms 9, the laser marking mechanism 10, the tensioning mechanism 13, and the winding mechanism 14 in sequence, forming a tortuous material transport path and completing the processing and recycling.

[0032] Correspondingly, the first frame 1, cabinet 3, and second frame 2 provide stable installation support for their respective mechanisms, ensuring the assembly accuracy and operational stability of each mechanism. Cabinet 3 integrates core processing components, optimizes the overall equipment layout, saves workshop space, and protects the laser marking mechanism 10, reducing the impact of external dust and debris on marking accuracy. The unwinding mechanism 4, powered by the first drive assembly 6, achieves stable and controllable unwinding of the fabric roll. The unwinding rate can be adjusted synchronously according to subsequent processing speed, reducing slack, pulling, or jamming during unwinding and ensuring the initial stability of material transport. The soaking mechanism 8 forms a uniform wet layer on the fabric surface through the liquid storage tank 82, effectively addressing the thermal damage problem during laser marking. The pulling mechanism 9, driven by the second drive assembly 7, forms bidirectional traction in front of and behind cabinet 3, providing continuous and stable tension to the fabric.

[0033] Furthermore, under the control of the control system 12, the laser marking mechanism 10 completes diverse marking process requirements, achieving clear and permanent marking of text, patterns, QR codes, and other identifiers. The tensioning mechanism 13 can actively adjust the tension of the fabric in the later stages of conveying to offset tension fluctuations during unwinding, rewinding, and conveying, ensuring that the material is smoothly recovered by the rewinding mechanism 14. As the core control unit of the equipment, the control system 12 is responsible for coordinating the actions of all mechanisms, including unwinding, pulling, marking, tensioning, and rewinding, achieving speed synchronization and action linkage among the mechanisms, reducing manual intervention, improving the automated processing efficiency of the equipment, and precisely controlling key parameters such as marking intensity and conveying speed.

[0034] Therefore, this device realizes the integrated operation of automated continuous laser marking and recycling of fabric rolls. The wet layer on the fabric surface, provided by the soaking mechanism 8, can quickly absorb and evaporate the heat generated by the laser, effectively reducing the temperature of the processing area and reducing heat damage at the source. This ensures that the marked edges are clean and free of scorch marks. Combined with the tortuous material transport path and the synergistic effect of multiple drive, tension, and pulling mechanisms 9, the stability of material transport and the accuracy of laser marking are improved. All mechanisms are integrated into the integrated structure of the frame and cabinet 3 and coordinated by the control system 12, which greatly improves the automation level and production efficiency of fabric marking, while ensuring product quality and enhancing product market competitiveness and corporate image.

[0035] Specifically, refer to Figure 2 Below the unwinding mechanism 4 is a correction component 5. The correction component 5 includes a position sensor, a slide rail structure 51 and a correction motor 52. The position sensor is installed on the first frame 1 (not shown in the figure) to monitor the edge position of the roll material in real time. The slide rail structure 51 includes two parallel linear guide rails. The correction motor 52 slides left and right between the two linear guide rails through the connector 53 and is connected to the outer frame of the unwinding mechanism 4 through the lead screw structure 54. The bottom of the outer frame of the unwinding mechanism 4 is fixed with a slider 41 that slides and cooperates with the linear guide rails.

[0036] Correspondingly, the position sensor provides precise offset signals to the control system 12, providing data for the correction action. The slide rail structure 51 utilizes dual guide rails to ensure the stability and structural rigidity of the guiding system, providing precise linear guidance for the left and right sliding of the unwinding mechanism 4. This reduces the likelihood of swaying, jamming, or trajectory deviation during the unwinding mechanism 4's sliding process, ensuring the trajectory accuracy of the correction action. The correction motor 52, as the correction power source, outputs rotational power, providing timely and appropriate driving force for the position adjustment of the unwinding mechanism 4.

[0037] Furthermore, the lead screw structure 54 performs the function of converting rotary motion into linear motion, accurately and efficiently converting the rotary power output by the correction motor 52 into a linear driving force that drives the unwinding mechanism 4 to slide left and right. Its high transmission precision allows for micro-displacement adjustments of the unwinding mechanism 4, ensuring that the edge of the roll material is accurately corrected to the preset conveying path, effectively improving correction accuracy. The slider 41 forms a precise sliding fit with the linear guide rail, stably supporting the weight of the unwinding mechanism 4 and the roll material, and reducing the frictional resistance when the unwinding mechanism 4 slides along the guide rail, making the sliding operation smoother and without jamming. Simultaneously, it ensures the fit between the unwinding mechanism 4 and the guide rail, further enhancing guiding accuracy and reducing looseness. The connector 53 not only securely connects the correction motor 52 to the lead screw structure 54, enabling the motor's rotational power to be transmitted to the lead screw without loss, thus ensuring the effectiveness of power transmission; it also adapts and connects the correction motor 52 to the linear guide rail, allowing the motor to slide synchronously between the two linear guide rails according to the transmission requirements of the lead screw, ensuring the coordination between power transmission and mechanism movement, and reducing mechanical interference between components.

[0038] Therefore, when a roll material deviation is detected, the correction motor 52 drives the lead screw structure 54, which in turn drives the outer frame of the unwinding mechanism 4. With the help of the sliding cooperation between the bottom slider 41 of the frame and the parallel linear guide rail, the unwinding mechanism 4 can be smoothly adjusted left and right, correcting the roll material feeding deviation in a timely manner. This ensures that the roll material is accurately fed along the preset path, reducing problems such as subsequent marking misalignment, material waste, or equipment jamming caused by deviation, and ensuring the stability and marking accuracy of the overall processing flow.

[0039] Specifically, refer to Figure 3 In this embodiment, the liquid storage tank 82 is a cuboid structure with a slope 821 transitioning at the top, and the slope 821 faces the material pulling mechanism 9; the soaking assembly also includes a guide roller group 81, which includes five guide rollers, of which two guide rollers are located above the liquid storage tank 82, two guide rollers are fixed to the inner walls on both sides of the liquid storage tank 82, and one guide roller can slide up and down along the first frame 1; a liquid level sensor and a circulation filtration system (not shown in the figure) are also installed at the bottom of the liquid storage tank 82.

[0040] Correspondingly, the inclined surface 821 of the liquid storage tank 82 facilitates the smooth introduction of the fabric from the soaking area into the pulling mechanism 9, reducing scratch damage to the fabric edges. The guide roller group 81, through its different positional layout, allows the fabric to be fully immersed in the liquid to form a wet layer, and the immersion depth and conveying tension of the fabric can be flexibly adjusted by sliding the guide rollers to adapt to the wetting needs of fabrics of different thicknesses and materials. The wet layer temporarily softens and adheres the fibers on the fabric surface, reducing the problems of blurred marking patterns and rough edges caused by fluffy and curled fibers in the dry state. It allows the laser energy to act more stably on the fabric surface, reducing uneven pattern depth caused by fiber reflection and uneven energy absorption. Simultaneously, it adheres dust and lint to the fabric surface, effectively suppressing dust. Furthermore, the friction of the wetted fabric surface increases moderately, and the softened and adhered fibers better fit with the pulling and tensioning mechanism 13, improving the stability of material conveying and reducing deviation and jamming.

[0041] Furthermore, the liquid level sensor at the bottom of the liquid storage tank 82 monitors the liquid level in real time to ensure a stable soaking liquid volume and reduce uneven soaking caused by insufficient liquid level; the circulating filtration system circulates and filters the liquid in the liquid storage tank 82 to maintain the cleanliness of the liquid, reduce the impact of impurities on the wet layer of the fabric, extend the service life of the soaking liquid, and reduce consumable costs.

[0042] In summary, this device automates and controls the soaking process, ensuring a uniform and consistent wetted layer on the fabric, thus providing reliable support for subsequent laser marking to prevent scorching and improve accuracy.

[0043] On the other hand, the material pulling mechanism 9 includes an active roller 91 and a driven roller 92 rotatably connected to the first frame 1. A spring-type pressure adjusting component 93 is connected between the active roller 91 and the driven roller 92. The spring-type pressure adjusting component 93 is used to adjust the roller spacing to change the bonding pressure applied to the fabric.

[0044] Therefore, the driving roller 91, as the core power actuator of the material pulling mechanism 9, outputs continuous and stable traction power through its own rotation, directly driving the fabric clamped between the rollers to be smoothly conveyed forward at the preset speed of the equipment. The driven roller 92 and the driving roller 91 form an upper and lower clamping structure, closely fitting the upper surface of the fabric, effectively increasing the contact friction between the fabric and the roller body, reducing the phenomenon of relative sliding and free rotation between the fabric and the roller body during the conveying process, efficiently transmitting the output power of the driving roller 91, and effectively ensuring the reliability of the traction conveying effect.

[0045] Furthermore, the spring-type pressure regulating component 93, utilizing the elastic extension and contraction characteristics of the spring, can flexibly and conveniently adjust the roller gap between the driving roller 91 and the driven roller 92, thereby precisely changing the clamping pressure of the two rollers on the fabric. Operators can adaptively adjust the pressure according to the different thicknesses, hardness, and other characteristics of the fabric, which reduces the risk of fabric damage and deformation caused by excessive pressure, and also reduces the occurrence of fabric slippage, conveying lag, or positional deviation caused by insufficient pressure. This ensures that the two rollers provide sufficient clamping force to complete the traction and conveying of the fabric, thereby increasing the adaptability and processing compatibility of the material pulling mechanism 9, and providing a reliable material conveying guarantee for the precise processing of subsequent laser marking processes.

[0046] Furthermore, the first drive assembly 6 includes a first reducer and a first servo motor that are connected by transmission, and the second drive assembly 7 includes a second reducer and a second servo motor that are connected by transmission; and the output torque of the first drive assembly 6 is greater than that of the second drive assembly 7.

[0047] Correspondingly, the first drive component 6 outputs greater torque, adapting to the heavy load requirements of the unwinding and rewinding mechanism 14 in starting, stopping, and winding the roll material, ensuring smooth unwinding and tight rewinding, and reducing slippage and roll accumulation caused by insufficient torque. The second drive component 7 outputs less torque, precisely matching the light load requirements of the material pulling mechanism 9, which only clamps and conveys the fabric, and finely controlling the fabric conveying speed and rhythm to achieve stable traction and synchronous material transport, while meeting the conveying accuracy requirements of the marking process. Both drive components use the transmission cooperation of motors and reducers to convert the high-speed, low-torque motor into low-speed, high-torque, and output differentiated power to different mechanisms, thereby ensuring the controllability and continuity of fabric-related conveying actions.

[0048] In the process described above, refer to Figure 4 The laser marking mechanism 10 includes a laser marking head 101 and a cross-shaped moving module 102. The laser marking head 101 moves left and right and moves up and down within the cabinet 3 via the cross-shaped moving module 102. The left and right movement allows the marking head to adapt to fabric rolls of different widths, ensuring precise alignment with the marking area. The up and down movement flexibly adjusts the distance between the marking head and the fabric surface, ensuring accurate laser focus and guaranteeing the clarity and precision of the marked pattern. The cross-shaped moving module 102 can quickly adjust the position of the marking head according to processing needs, meeting diverse marking patterns and fabric processing requirements, providing flexible and precise hardware support for continuous laser marking operations.

[0049] Specifically, a dust collection mechanism 11 is also installed next to the working area of ​​the laser marking mechanism 10. The dust collection mechanism 11 connects the inside and outside of the cabinet 3. Its filtration system adopts a membrane filter cartridge structure and forms a vortex airflow path through multiple built-in guide plates (not shown in the attached figure).

[0050] Correspondingly, the dust collection mechanism 11, utilizing a vortex airflow path formed by multiple sets of guide vanes, can efficiently capture dust and hot smoke generated by laser marking fabric using centrifugal force. This allows pollutants to quickly gather and be sucked in with the vortex airflow, improving pollutant collection efficiency. The filtration system with a membrane filter cartridge structure can perform high-precision filtration of the sucked-in fine fiber dust and smoke particles, effectively intercepting pollutants and reducing their dispersion. Simultaneously, the dust collection mechanism 11 connects the inside and outside of the cabinet 3, expelling filtered clean air. This reduces dust and smoke contamination of the precision components inside the cabinet 3, ensuring clear optical paths and operational stability, while also improving the working environment of the external workshop, reducing the impact of dust on operators, and lowering the frequency of equipment cleaning and maintenance.

[0051] Specifically, refer to Figure 5 In this embodiment, the tensioning mechanism 13 includes three tensioning rollers rotatably connected to the second frame 2. The three tensioning rollers are arranged vertically and horizontally at intervals, forming an S-shaped material transfer channel with the winding mechanism 14. One tensioning roller can slide up and down along the second frame 2.

[0052] Therefore, the S-shaped material conveying channel formed by multiple tension rollers extends the contact path between the fabric and the rollers. By increasing the contact length and contact area between the fabric and the tension rollers, the friction between the rollers and the fabric is effectively improved, thereby reducing slippage during conveying and ensuring the synchronization and stability of the fabric conveying with the winding mechanism 14. The S-shaped conveying path can provide continuous guidance and stretching for the fabric, gradually releasing the local stress generated during the initial conveying and marking process, and ultimately balancing the overall tension of the fabric. Combined with the multi-point support of the fabric by the spaced rollers, it reduces excessive sagging of the fabric due to its own weight and maintains the flatness of the fabric during the conveying process, laying the foundation for the subsequent winding process.

[0053] Furthermore, the sliding tension roller can flexibly adjust its position according to real-time changes in fabric tension, achieving adaptive tension balance: when the fabric tension becomes excessive due to fluctuations in unwinding and rewinding speeds or material deviations, the excessive tension will push the tension roller upwards, causing it to rise along the frame, thereby increasing the fabric's conveying path length, releasing excess tension, and reducing the risk of fabric stretching deformation and damage due to overload, or marking pattern misalignment and blurring due to excessive local stress; when the fabric tension is too low, the tension roller will slide downwards under its own weight or the action of auxiliary elastic components, shortening the fabric's conveying path length, re-tensioning the loose fabric, and reducing problems such as wrinkles, stacking, and tangling. Its dynamic adjustment characteristics can meet the requirements of fabrics with different thicknesses and elastic moduli, as well as different conveying speeds, achieving flexible tension control and ensuring that the fabric is in an ideal state of uniform tension and flat surface before rewinding, improving the regularity and quality of the finished roll material, and facilitating subsequent storage, transportation, and use.

[0054] On the other hand, refer to Figure 6 The cabinet 3 has an adjustment window 31 on the outer wall facing the laser marking mechanism 10. The upper edge of the adjustment window 31 is hinged to a structurally matching flip cover 32. The upper surface of the flip cover 32 is fixed with a handle 321 and connected to the cabinet 3 by a pneumatic strut 33. The second frame 2 is also equipped with an adjustment station 21 in front of the adjustment window 31. The adjustment station 21 is raised so that the operator can naturally reach into the adjustment window 31 and have a line of sight at the same level.

[0055] Correspondingly, the debugging window 31 on the outer wall of the cabinet 3 provides a direct operating channel for the maintenance and parameter adjustment of the laser marking mechanism 10. The flip cover 32 is hinged and supported by a pneumatic strut 33, and with the handle 321, it can be easily opened and closed and positioned at any angle. When closed, it can seal and protect the precision components inside the cabinet 3, reducing the entry of dust and debris. The height of the height-adjusted debugging station 21 is precisely matched with the debugging window 31. When the operator stands on it, his / her hands can naturally reach into the window and his / her line of sight is level with the work area, which meets the requirements of ergonomics, reduces fatigue from bending over and raising his / her hands, effectively improves the accuracy and comfort of debugging operations, and ensures the safety of operation during the debugging process. It comprehensively realizes convenient, safe and accurate mechanism debugging and maintenance, and improves the human-machine friendliness and efficiency of equipment debugging operations.

[0056] In addition, the control system 12 includes a control panel 121 and a computer 122. The control panel 121 is embedded in the side wall of the cabinet 3 and close to the debugging window 31. The computer 122 is fixed to one side of the control panel 121 by a mounting bracket and can rotate relative to the mounting bracket.

[0057] Therefore, operators can conveniently complete parameter settings, start / stop control, and other operations from the debugging station 21 via the control panel 121 without frequent movement, achieving seamless integration of debugging and operation. The computer 122 is rotatable and adjustable via a mounting bracket, flexibly adapting to different operators' perspectives and operating habits, ensuring a clear display interface and convenient operation. Both are integrated and arranged next to the cabinet 3, forming a collaborative operating area with the debugging window 31 and debugging station 21, optimizing the operational flow. The embedded and bracket-fixed design saves equipment space, making the overall layout more compact and organized, providing efficient and comfortable control support for daily operation, parameter debugging, and operational monitoring. The layout and structural design of this control system 12 enables convenient operation, real-time debugging, and human-machine interface for laser marking, contributing to improved equipment operating efficiency.

[0058] The implementation principle of an automatic laser marking machine according to an embodiment of this application is as follows: This device realizes the integrated operation of automated continuous laser marking processing and recycling of fabric rolls. The wet layer on the surface of the fabric, provided by the soaking mechanism 8, can quickly absorb the heat generated by the laser and evaporate, effectively reducing the temperature of the processing area and reducing heat damage from the source, ensuring that the marking edges are clean and free of scorch marks. Combined with the tortuous material transport path and the synergistic effect of multiple sets of drive, tension, and pulling mechanisms 9, the stability of material transport and the processing accuracy of laser marking are improved. All mechanisms are integrated into the integrated structure of the frame and cabinet 3 and are coordinated by the control system 12, which greatly improves the automation level and production efficiency of fabric marking processing, while ensuring product quality and enhancing product market competitiveness and corporate image.

[0059] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0060] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic laser marking machine, comprising a first frame (1), a cabinet (3), and a second frame (2) connected in sequence, characterized in that, It also includes an unwinding mechanism (4) and an soaking mechanism (8) mounted on the first cabinet (3), a laser marking mechanism (10) and a control system (12) built into the cabinet (3), and a tensioning mechanism (13) and a winding mechanism (14) mounted on the second frame (2); the unwinding mechanism (4) and the winding mechanism (14) are both connected to a first drive assembly (6), and the cabinet (3) is provided with a material pulling mechanism (9) driven by a second drive assembly (7) at the front and back respectively; the fabric starts from the unwinding mechanism (4), forms a wet layer on the surface of the roll in the liquid storage tank (82) of the soaking mechanism (8), and then passes through the two material pulling mechanisms (9), the laser marking mechanism (10), the tensioning mechanism (13) and the winding mechanism (14) in sequence, forming a tortuous material transport path and completing the processing and recycling.

2. The automatic laser marking machine according to claim 1, characterized in that, The unwinding mechanism (4) is connected to a correction component (5) below. The correction component (5) includes a position sensor, a slide rail structure (51) and a correction motor (52). The position sensor is used to monitor the edge position of the roll material in real time. The slide rail structure (51) includes two parallel linear guide rails. The correction motor (52) slides left and right between the two linear guide rails through a connector (53) and is connected to the outer frame of the unwinding mechanism (4) through a screw structure (54). The bottom of the outer frame of the unwinding mechanism (4) is provided with a slider (41) that slides and cooperates with the linear guide rails.

3. An automatic laser marking machine according to claim 1, characterized in that, The liquid storage tank (82) has a cuboid structure with a slope (821) transitioning at the top, and the slope (821) faces the material pulling mechanism (9); the soaking assembly also includes a guide roller group (81), which includes multiple guide rollers, wherein at least one of the guide rollers is located above the liquid storage tank (82), fixed to the inner wall of the liquid storage tank (82), and can slide up and down along the first frame (1); a liquid level sensor and a circulation filtration system are also provided at the bottom of the liquid storage tank (82).

4. An automatic laser marking machine according to claim 1, characterized in that, The material pulling mechanism (9) includes an active roller (91) and a driven roller (92) rotatably connected to the first frame (1). A spring-type pressure adjusting assembly (93) is connected between the active roller (91) and the driven roller (92). The spring-type pressure adjusting assembly (93) is used to adjust the roller spacing to change the bonding pressure applied to the fabric.

5. An automatic laser marking machine according to claim 1, characterized in that, The first drive assembly (6) includes a first reducer and a first servo motor connected by transmission, and the second drive assembly (7) includes a second reducer and a second servo motor connected by transmission; the output torque of the first drive assembly (6) is greater than that of the second drive assembly (7).

6. An automatic laser marking machine according to claim 1, characterized in that, The laser marking mechanism (10) includes a laser marking head (101) and a cross-shaped moving module (102). The laser marking head (101) moves left and right and rises and falls up and down inside the cabinet (3) through the cross-shaped moving module (102).

7. An automatic laser marking machine according to claim 1, characterized in that, A dust collection mechanism (11) is provided on the side of the working area of ​​the laser marking mechanism (10). The dust collection mechanism (11) connects the inside and outside of the cabinet (3). Its filtration system adopts a membrane filter cartridge structure and forms a vortex airflow path through multiple built-in guide plates.

8. An automatic laser marking machine according to claim 1, characterized in that, The tensioning mechanism (13) includes a plurality of tensioning rollers rotatably connected to the second frame (2), and the plurality of tensioning rollers form an S-shaped material transfer channel with the winding mechanism (14), and at least one tensioning roller can slide up and down along the second frame (2).

9. An automatic laser marking machine according to claim 1, characterized in that, The cabinet (3) has an adjustment window (31) on the outer wall facing the laser marking mechanism (10). The upper edge of the adjustment window (31) is hinged to a structurally matching flip cover (32). The upper surface of the flip cover (32) is fixed with a handle (321) and connected to the cabinet (3) by a pneumatic strut (33). The second frame (2) is also provided with an adjustment station (21) in front of the adjustment window (31). The adjustment station (21) is raised so that the operator can naturally reach into the adjustment window (31) and have their line of sight level with it.

10. An automatic laser marking machine according to claim 9, characterized in that, The control system (12) includes a control panel (121) and a computer (122). The control panel (121) is embedded in the side wall of the cabinet (3) and close to the debugging window (31). The computer (122) is fixed to one side of the control panel (121) by a mounting bracket and can rotate relative to the mounting bracket.

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