Double-head laser paint remover

Abstract

The invention discloses a double-head laser paint removing machine, relates to the technical field of motor manufacturing and electronic element processing, and aims to solve the problems of low efficiency, poor precision, weak universality and environmental pollution of traditional paint removing equipment. The paint remover comprises a rack unit, a machining station bearing module, a double-laser machining module, a double-screen control system and a closed protective outer cover. The machining station bearing module integrates a multi-station rotating clamp, an air pressure flow divider and a synchronous transmission assembly, and accurate positioning and synchronous rotation of a coil can be achieved. The double-laser processing module realizes flexible operation through a multi-axis movement mechanism, and supports independent or cooperative processing. The mode of double-laser-head parallel machining and multi-station synchronous operation is adopted, the machining efficiency is improved by 100% or above compared with that of single-head equipment, the paint removing uniformity reaches 98% or above, the device is suitable for coils of various specifications, chemical pollution is avoided, the environment-friendly production requirement is met, the device is suitable for batch coil end paint removing machining scenes, and the production and machining requirements can be met.

Description

[0001] This invention relates to the fields of motor manufacturing and electronic component processing, specifically a dual-head laser stripping machine for stripping the enamel coating from the ends of enameled coils. It is particularly suitable for efficient and precise stripping of multi-station batch coils and belongs to the field of coil surface treatment technology. Background Technology

[0002] In the production and assembly of electromagnetic components such as motors, transformers, and inductors, removing the insulating varnish from the ends of enameled coils is an indispensable and crucial process. Its purpose is to create conductive connections at the coil ends, facilitating subsequent welding, wiring, and other assembly operations. Currently, the mainstream varnish removal methods in the industry mainly include chemical stripping, mechanical scraping, and single-head laser stripping. All three methods have significant technical drawbacks, as detailed below: 1. Chemical stripping method: This method involves soaking the coil in strong acids, strong alkalis, or specialized chemical strippers to dissolve the insulating varnish through a chemical reaction. This method has the following problems: First, the stripping waste liquid contains a large amount of harmful substances, easily causing soil and water pollution, resulting in high environmental treatment costs and failing to meet current green production policies. Second, the stripping uniformity is poor, easily leading to incomplete stripping in certain areas or excessive corrosion of the coil substrate, affecting the coil's conductivity and service life. Third, the coil needs to be cleaned and dried after stripping, a cumbersome process with low production efficiency.

[0003] 2. Mechanical Scraping Method: This method involves manually or mechanically grinding the coil ends to forcibly remove the insulating varnish. The drawbacks of this method are: manual scraping is extremely inefficient and labor-intensive, suitable only for small-batch processing; mechanical scraping easily damages the coil conductors (e.g., conductor deformation, breakage), and has poor scraping precision, making it difficult to guarantee the flatness of the conductive surface at the coil ends, thus hindering subsequent welding quality control; furthermore, mechanical scraping generates a large amount of varnish dust, posing a health hazard to operators, and the equipment wears out quickly, resulting in high maintenance costs.

[0004] 3. Existing single-head laser paint stripping machines: These machines use a single laser head to strip paint from coils station by station. While this solves the problems of chemical contamination and mechanical damage, it still has the following shortcomings: First, the processing efficiency is low, as a single laser head needs to complete the processing of multiple stations sequentially, resulting in long processing times during mass production. Second, the multi-station clamping and positioning accuracy is poor, and adjacent coils are prone to inconsistent spacing and axial misalignment, leading to deviations in the laser scanning path and uneven paint stripping. Third, the coil rotation synchronization is insufficient. Existing equipment mostly uses independent single-station drives or simple transmission structures, resulting in large deviations in the rotation speed of multi-station coils, causing uneven circumferential paint stripping thickness at the coil ends, and even localized ablation. Fourth, the equipment has weak versatility. For coils of different diameters and lengths, the entire set of fixtures needs to be replaced, resulting in long changeover times and failing to meet the needs of flexible production.

[0005] In view of the shortcomings of the existing technology, there is an urgent need for a high-efficiency, precise, environmentally friendly and versatile coil stripping equipment to solve the current pain points in the industry, improve the quality and efficiency of coil stripping processing, and reduce production costs. Summary of the Invention

[0006] Therefore, it is necessary to provide a dual-head laser paint stripping machine to address the above problems.

[0007] A dual-head laser paint stripper includes a frame unit comprising a base with adjustable support legs and casters at the bottom, a middle operating table, and a lower storage cabinet. The multi-station support module includes multiple sets of rotating clamp units arranged in parallel, a pneumatic splitter assembly, and a drive mechanism. The dual-laser processing module comprises two independent laser processing heads, each connected to a multi-axis motion mechanism. The multi-axis motion mechanism includes a vertical lifting component and a horizontal traversing component. The vertical lifting component uses ball screw drive, while the horizontal traversing component uses linear guides and synchronous belt drive. The dual-screen control system includes at least two human-computer interaction interfaces. It also includes a closed protective cover, which is set on the upper part of the frame unit to form a safe processing space.

[0008] In one embodiment, the multi-station bearing module is provided with rotary processing groups on both sides, and each rotary processing group includes at least 8 parallel rotary fixture units, each of which is equipped with a positioning center column and an elastic clamping block.

[0009] In one embodiment, the pneumatic splitter assembly includes a pressure splitting rod that can slide along the length of the workstation, the pressure splitting rod having a positioning groove corresponding to the position of the coil.

[0010] In one embodiment, the drive mechanism includes a synchronous transmission assembly, which includes a drive base, a drive motor, a synchronous wheel, a slide rail, and a sliding base.

[0011] In one embodiment, the dual-screen control system supports independent control and coordinated linkage control of the two laser processing heads.

[0012] In one embodiment, each of the laser processing heads is connected to an independent exhaust duct, which is connected to an external exhaust system via a flexible corrugated pipe.

[0013] In one embodiment, the two laser processing heads can simultaneously perform paint stripping on coils at different workstations, or work together to simultaneously strip paint from both ends of the same coil.

[0014] In one embodiment, the enclosed protective cover is made of an aluminum profile frame and a transparent protective panel, and has a protective door with a safety interlock on the side.

[0015] In one embodiment, the multi-station bearing module is provided with a wheel cover; the multi-axis motion mechanism also includes a laser head calibration component.

[0016] In one embodiment, the central operating table is also provided with a button box; the adjustable support legs of the frame unit adopt a spiral lifting structure, and the casters have a self-locking function; and a laser shield is also provided on one side of the frame unit.

[0017] Compared with the prior art, the present invention has the following significant advantages: 1. High efficiency: Parallel processing with dual laser heads + synchronous rotation at multiple stations, at least 8 coils can be processed in a single batch, which is 2 to 3 times more efficient than traditional single-head laser paint stripping machines and 4 to 5 times more efficient than chemical paint stripping methods, greatly reducing the time required for mass production; 2. Precision: The airflow pressure divider achieves precise control of coil spacing through positioning grooves (spacing deviation ≤ ±0.1mm), and the synchronous transmission component ensures that the multi-station speed deviation is ≤ ±1%. Combined with the high-precision positioning of the multi-axis motion mechanism (positioning accuracy ±0.01mm), the uniformity of paint removal at the coil end reaches more than 98%, and the conductive surface after paint removal has good flatness, requiring no subsequent polishing. 3. Flexible adaptability: The elastic clamping wheel of the rotary fixture unit can adapt to coil diameters of φ0.5~φ5mm, the pressure bar positioning groove can be adjusted to adapt to coil lengths of 50~300mm, and the quick-change base frame supports rapid switching of different station numbers, adapting to flexible production of various coil specifications, and reducing changeover time to less than 10 minutes. 4. Safety and environmental protection: The enclosed protective cover and safety interlock design can effectively prevent laser leakage (laser protection level reaches IPG67), and the smoke exhaust system discharges paint residue and smoke in real time (purification efficiency ≥95%), with no chemical pollution, and complies with GB / T28948-2012 "Safety Requirements for Laser Processing Machinery" and environmental emission standards. 5. Stability and maintainability: The modular design allows for independent disassembly and assembly of each component, facilitating maintenance and repair; the synchronous transmission components use wear-resistant materials and precision bearings, ensuring a continuous operating life of ≥8000 hours and reducing maintenance costs by more than 30% compared to existing equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the central operating platform of the present invention; Figure 3This is a schematic diagram of the rotary machining assembly and pneumatic splitter assembly of the present invention; Figure 4 This is a schematic diagram of the overall structure of the drive mechanism of the present invention; Figure 5 This is a schematic diagram of the drive seat structure of the present invention; Figure 6 This is a schematic diagram of the multi-axis motion mechanism of the present invention.

[0019] 1. Frame unit; 11. Support legs; 12. Casters; 13. Base; 14. Central operating table; 15. Lower storage cabinet; 2. Multi-station support module; 201. Rotary machining group; 21. Rotary clamping unit; 211. Positioning column; 212. Elastic clamping block; 22. Pneumatic distributor assembly; 221. Pressure dividing rod; 23. Drive mechanism; 231. Synchronous transmission assembly; 2311. Drive base; 2312. Drive motor; 2313. Synchronous... 1. Wheel; 2314. Slide rail; 2315. Sliding base; 3. Dual laser processing module; 31. Laser processing head; 32. Multi-axis motion mechanism; 321. Vertical lifting assembly; 3211. Ball screw; 322. Horizontal traverse assembly; 3221. Linear guide rail; 3222. Synchronous belt; 4. Dual-screen control system; 41. Human-machine interface; 5. Enclosed protective cover; 6. Smoke exhaust pipe; 7. Protective door; 8. Laser cover; 9. Button box; 10. Wheel cover. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described in detail below. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] As used herein, the terms “prepared from” and “comprising” are synonymous. The terms “comprising,” “including,” “having,” “containing,” or any other variations thereof, as used herein, are intended to cover non-exclusive inclusion. For example, a composition, step, method, article, or apparatus that includes the listed elements is not necessarily limited to those elements, but may include other elements not expressly listed or elements inherent to such composition, step, method, article, or apparatus.

[0022] When a quantity, concentration, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pair of any upper or preferred value with any lower or preferred value, regardless of whether the range is disclosed individually. For example, when the range “1 to 5” is disclosed, the described range should be interpreted as including the ranges “1 to 4”, “1 to 3”, “1 to 2”, “1 to 2 and 4 to 5”, “1 to 3 and 5”, etc. When numerical ranges are described herein, unless otherwise stated, the range is intended to include its endpoints and all integers and fractions within that range.

[0023] Furthermore, the indefinite articles “a” and “an” preceding the elements or components of this invention do not impose any limitation on the quantity requirement (i.e., the number of times) of the elements or components. Therefore, “an” or “a” should be interpreted as including one or at least one, and the singular form of an element or component also includes the plural form, unless the quantity clearly refers to the singular form.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] A dual-head laser paint stripping machine includes a frame unit 1, comprising a base 13 with adjustable support feet 11 and casters 12, a central operating table 14, and a lower storage cabinet 15. The frame unit 1 is welded from high-strength aluminum alloy and steel plate, with overall dimensions (length × width × height) of 1800mm × 800mm × 1200mm and a weight of approximately 300kg. Its specific structure is as follows: 1. Base 13: Each of the four corners of the bottom is equipped with one set of spiral lifting support feet 11 and one set of self-locking casters 12. The support feet 11 adopt an M16 spiral structure with a lifting stroke of 50mm. A level is installed on the top (accuracy 0.02mm / m). The level of the equipment can be adjusted by rotating the support feet 11 (level deviation ≤0.1mm / m). The casters 12 are made of polyurethane material with a load capacity ≥500kg and are equipped with a mechanical self-locking device, which can realize the rapid movement and fixed positioning of the equipment. 2. Work surface: Made of 304 stainless steel, 10mm thick, with sandblasted anti-slip treatment, wear-resistant and easy to clean. The center of the work surface has a reserved mounting slot (800mm×400mm) for the processing position support module, which is fixedly connected to the support module by T-bolts. 3. Storage Cabinet: Located at the bottom of rack unit 1, it is divided into two areas, left and right. The left side is a double-door electrical control cabinet (400mm×300mm×600mm), which houses electrical components such as PLC controller, servo driver, and laser power supply. The cabinet is equipped with a cooling fan (airflow ≥200m³ / h) and a dust filter to ensure stable operation of the electrical components. The right side is a drawer-type storage space (400mm×300mm×600mm) for storing clamping parts, cleaning tools, and other items. The drawer has a load-bearing capacity of ≥50kg and is equipped with a limit device to prevent accidental slippage.

[0026] The multi-station support module 2 includes multiple sets of rotating clamp units 21 arranged in parallel, a pneumatic splitter assembly 22, and a drive mechanism 23. This module is the core component for achieving precise coil positioning and synchronous rotation. It is installed in the center of the operating table, with overall dimensions of 800mm × 400mm × 200mm and a weight of approximately 80kg. It comprises four main sub-components: rotating clamp units 21, pneumatic splitter assembly 22, synchronous transmission assembly 231, and a modular base frame. The specific structure is as follows: The rotary clamping unit 21 has a total of 8 symmetrical parallel stations, evenly arranged along the length of the bearing module, with a station spacing of 15mm. Each rotary clamping unit 21 includes a pair of clamping wheels, a clamping cylinder, and a bearing seat. The specific parameters are as follows: 1. Clamping wheel: Made of polyurethane elastic wear-resistant material, 50mm in diameter, 10mm in width, Shore A85 hardness, with V-shaped positioning grooves machined on the surface (groove width 2~5mm, suitable for coils of different diameters). The clamping wheel is coaxially connected to the drive shaft, and the rotational runout is ≤0.01mm. 2. Clamping cylinder: A small pen-shaped cylinder (model CDJ2B16-30) is used, with a working pressure of 0.4~0.6MPa and an output thrust of 100N. The clamping wheel is opened and closed by the cylinder piston rod. The clamping force can be adjusted by the pressure regulating valve (adjustment range 5~20N) to achieve adaptive clamping of coils of different diameters and avoid damage to the coil by rigid clamping. 3. Bearing housing: Made of cast iron, with built-in deep groove ball bearing (model 6204), bearing precision grade P5, capable of withstanding radial load ≥200N, ensuring smooth rotation of the drive shaft, reducing friction loss, and extending service life.

[0027] The dual-laser processing module 3 includes two independent laser processing heads 31, each connected to a multi-axis motion mechanism 32. The multi-axis motion mechanism 32 includes a vertical lifting component 321 and a horizontal traversing component 322. The vertical lifting component 321 is driven by a ball screw 3211, and the horizontal traversing component 322 is driven by a linear guide rail 3221 and a synchronous belt 3222. The equipment is equipped with two independent laser processing heads 31, symmetrically installed on both sides of the processing position support module. Each laser processing head 31 includes a laser source, a multi-axis motion mechanism 32, and a smoke exhaust pipe 6. The specific structure is as follows: 1. Laser source: A 1064nm fiber laser (model IPG YLR-200) is used, with a power range of 50~200W continuously adjustable, power stability of ±2%, laser spot diameter adjustable from 0.1 to 0.5mm, and focusing distance of 100mm. It can achieve rapid vaporization and removal of insulating varnish without damaging the coil substrate. 2. Multi-axis motion mechanism 32 (corresponding to claim 5): adopts an XYZ three-axis linear motion + rotary axis angle adjustment structure, and the parameters of each axis are as follows: (1) Vertical lifting assembly 321 (Z-axis): It adopts ball screw 3211 transmission (model SFU1605), with a stroke of 300mm, positioning accuracy of ±0.01mm, repeatability of ±0.005mm, and drive motor 2312 is a 57 stepper motor (torque 1.2N·m). (2) Horizontal transverse component 322 (X-axis): It adopts linear guide rail 3221 + synchronous belt 3222 transmission (guide rail model MGN20, synchronous belt 3222 pitch 5mm), stroke 800mm, positioning accuracy ±0.02mm, repeatability ±0.01mm, drive motor 2312 is 57 stepper motor (torque 1.2N·m); The dual-screen control system 4 includes at least two human-machine interfaces 41, installed on the right side of the operating table of the rack unit 1. It consists of both hardware and software components, realizing the overall control and operation of the equipment, as detailed below: 1. Hardware Components: Equipped with two 10-inch color human-machine interfaces 41 (HMI, model Weintek MT8102iE), a PLC controller (model Siemens S7-200 SMART SR40), a servo driver (model MR-J4-10A), a laser power controller, and input / output modules; the two HMIs control two laser processing heads 31 respectively, supporting Ethernet communication (communication rate 100Mbps), enabling independent parameter setting and synchronous status display; the equipment is equipped with emergency stop buttons, start buttons, reset buttons, and other operating elements, installed on the front of the control panel for easy and quick operation by the operator; 2. Software: Employs ladder logic programming, supports switching between two machining modes (independent machining / cooperative machining), and includes the following functions: (1) Parameter setting function: The laser power, scanning speed (50~500mm / s), paint removal path (spiral scanning / linear scanning), number of scans (1~5 times), and rotation speed (10~100rpm) of the rotating fixture unit 21 can be set separately for the two laser heads. (2) Status monitoring function: Real-time display of processing progress, laser power, rotation speed, and equipment operating status (normal / fault). If a fault occurs (such as abnormal laser source, excessive rotation speed deviation, or opening of protective door 7), an audible and visual alarm will be triggered immediately (alarm sound level ≥ 85dB) and the fault code will be displayed. (3) Data storage function: It can store 100 sets of processing parameter formulas, support parameter calling and modification, and facilitate batch processing of coils of different specifications; (4) Manual operation function: It supports manual control of the XYZ axis movement of the laser head, angle adjustment, laser spot shooting, and start and stop of the rotating fixture, which facilitates equipment debugging and troubleshooting.

[0028] It also includes a closed protective cover 5, which is set on the upper part of the frame unit 1 to form a safe processing space.

[0029] The enclosed protective cover 5 is installed on the upper part of the frame unit 1, with overall dimensions of 1800mm×800mm×800mm. It is constructed by splicing an aluminum profile frame (profile cross-section 40×40mm) with an acrylic transparent protective plate (thickness 8mm). The protective plate has a light transmittance of ≥90%, facilitating observation of the processing status. The specific structure is as follows: 1. Protective door 7: A double protective door 7 is provided on the front, with a door size of 800mm×600mm. It is connected to the frame by hinges. A safety interlock switch (model AZ-1601) is installed on the door. When the protective door 7 is opened, the switch immediately sends a signal to the control system, and the equipment automatically cuts off the laser output and triggers an emergency stop to prevent laser leakage from injuring people. 2. Lighting and heat dissipation: Two LED light strips (12W power, 6000K color temperature) are installed on the top, with adjustable brightness for easy observation of processing details; heat dissipation holes (100×100mm) are reserved on the side of the frame, and dust filters are installed to ensure air circulation inside the outer casing and prevent overheating from affecting equipment operation; 3. Smoke exhaust ports: Two φ60mm smoke exhaust ports are reserved at the top and connected to the smoke exhaust pipe 6 of the laser processing head 31 to ensure that the smoke is discharged smoothly.

[0030] Furthermore, the multi-station support module 2 is provided with rotary processing groups 201 on both sides, and each rotary processing group 201 includes at least 8 parallel rotary clamping units 21. Each rotary clamping unit 21 is equipped with a positioning center column 211 and an elastic clamping block 212. These are used to clamp the end of the coil and drive the coil to rotate around its own axis.

[0031] Furthermore, the airflow pressure divider assembly includes a pressure dividing rod 221 that can slide along the length of the workstation, and the pressure dividing rod 221 is provided with a positioning groove corresponding to the coil position. Through pneumatic drive and a precise positioning structure, uniform spacing and coaxial positioning of multi-station coils are achieved, ensuring the accuracy and efficiency of subsequent processing steps such as laser paint stripping. It is used to position and separate multiple sets of coils, ensuring consistent coil spacing.

[0032] Furthermore, the drive mechanism 23 includes a synchronous transmission assembly 231, which comprises a drive base 2311, a drive motor 2312, a synchronous wheel 2313, a slide rail 2314, and a sliding base 2315. This drives the clamping wheels of all rotating clamping units 21 to rotate synchronously, ensuring the coil rotates at a uniform speed during laser paint removal, thus achieving uniform circumferential paint removal from the coil ends.

[0033] Furthermore, the dual-screen control system 4 supports independent and coordinated control of the two laser processing heads 31. Laser power, scanning speed, and paint removal path parameters can be set separately, and the processing status can be displayed in real time.

[0034] Furthermore, each laser processing head 31 is connected to an independent exhaust duct 6, which is connected to an external exhaust system via a flexible corrugated pipe. Exhaust duct 6: Each laser processing head 31 is connected to a φ50mm flexible corrugated pipe (1.5m in length) on its side. One end of the corrugated pipe is fixed to the laser head via a quick connector, and the other end is connected to the external exhaust system interface. The exhaust system has an airflow of ≥1000m³ / h, which can discharge the smoke and paint residue generated during the laser paint stripping process in real time, preventing contamination of the optical lenses and the production environment.

[0035] Furthermore, the two laser processing heads 31 can simultaneously perform paint removal processing on coils at different workstations, or collaboratively perform simultaneous paint removal on both ends of the same coil. This helps improve processing efficiency.

[0036] Furthermore, the enclosed protective cover 5 is constructed from an aluminum profile frame and a transparent protective panel, with a protective door 7 equipped with a safety interlock on the side. When the protective door 7 is opened, the equipment automatically triggers an emergency stop and cuts off the laser output.

[0037] Furthermore, the multi-station support module 2 is equipped with a wheel cover 10; the multi-axis motion mechanism 32 also includes a laser head calibration assembly. The initial position and angular deviation of the laser processing head 31 can be automatically calibrated through visual positioning or mechanical positioning.

[0038] Furthermore, the central operating table 14 is also equipped with a button box 9; the adjustable support legs 11 of the frame unit 1 adopt a spiral lifting structure, and the casters 12 have a self-locking function; and a laser guard 8 is also provided on one side of the frame unit 1. This enables rapid positioning and horizontal adjustment of the equipment.

[0039] Workflow: The workflow of the dual-head laser paint stripping machine of this invention is based on modular collaborative control, and is divided into five steps: equipment initialization, coil clamping and positioning, processing parameter setting, laser paint stripping, and processing completion and unloading. The specific operation and control logic of each step is as follows (corresponding to the collaborative work of each core component, adapted to batch coil processing scenarios): Step 1: Device Initialization (Preparation Phase) 1. Operators inspect the equipment's appearance, confirming that all components (laser processing head 31, rotary fixture, air pressure distributor, and exhaust pipe 6) are properly connected, without looseness or damage; clean the paint residue and dust from the processing station's support module to ensure the workstation is clean; 2. Turn on the main power supply of the equipment (located on the side of rack unit 1). The control system will automatically start the self-test program, sequentially checking the working status of components such as the laser source, servo motor, air pressure system, safety interlock switch, and speed sensor. If the self-test passes, the HMI will display "Equipment Ready" and the audible and visual alarm will sound (3 short beeps). If the self-test fails, the HMI will display fault codes (such as "E01 - Laser Source Abnormal" or "E02 - Insufficient Air Pressure"). The operator needs to troubleshoot the problem according to the fault code, fix it, and restart the self-test. 3. Adjust the adjustable support feet 11 of the frame unit 1, observe the level, and ensure that the equipment is level (horizontal deviation ≤ 0.1 mm / m). Then, lock the self-locking device of the movable casters 12 to fix the position of the equipment. 4. Start the external smoke exhaust system, set the smoke exhaust air volume to 800m³ / h through the HMI, check whether the smoke exhaust pipe 6 is unobstructed and free from leaks or blockages; turn on the LED lighting strip inside the enclosed protective cover 5 and adjust the brightness to a suitable level for observation.

[0040] Step 2: Coil clamping and positioning (workpiece preparation stage) This step takes processing an enameled coil with a diameter of 2mm and a length of 150mm as an example. Since the multi-station bearing module 2 has rotary processing groups 201 on both sides, and each rotary processing group 201 contains at least 8 parallel rotary fixture units 21, the processing is carried out in two groups, and a total of 16 coils can be processed. The specific operation is as follows: 1. When the operator presses the "Release Clamping Block" button on the HMI, the control system sends a signal to the clamping cylinder of the rotary clamping unit 21. The cylinder piston rod retracts, and the elastic clamping block 212 retracts. At the same time, the pneumatic cylinder of the pneumatic distributor drives the pressure distribution rod 221 to retract (to the initial position, away from the workstation). 2. Open the double protective door 7 of the closed protective cover 5 (the safety interlock switch is triggered, the equipment enters standby mode, and laser output is prohibited). Place the 16 coils to be stripped one by one on the rotating clamp unit 21 of the two sets of rotating processing groups 201. Specifically, they are fitted onto the positioning column 211, so that the end of the coil extends 20mm beyond the outside of the clamping wheel (the stripping area), ensuring that the coil is placed stably without deviation. 3. Press the "Clamping Start" button on the HMI. The pneumatic cylinder of the pneumatic splitter drives the pressure splitting rod 221 to slide forward along the sliding guide rail (sliding speed 100mm / s). The positioning groove of the pressure splitting rod 221 is precisely engaged with the coil, and the 16 coils are evenly separated at a preset interval of 15mm to achieve coil spacing and positioning. At the same time, the clamping cylinder of the rotating clamping unit 21 is activated, the piston rod extends, the elastic clamping block 212 closes, and the coil is adaptively clamped (clamping force set to 10N). After clamping, the HMI displays "Clamping Complete". 4. The operator visually inspects the positioning and clamping status of all coils to confirm that the coil spacing is consistent, the clamping is firm, and there is no looseness or offset; after the inspection is completed, the protective door 7 is closed, the safety interlock switch is reset, and the equipment sends a "ready to process" signal to the HMI.

[0041] Step 3: Setting Processing Parameters (Control Parameter Configuration Stage) The operator sets the processing parameters through the dual-screen control system 4. In this embodiment, a "cooperative processing" mode is adopted. First, the paint is removed from the processing group on one side of the multi-station support module 2. The two laser heads process the coils of the four stations respectively. The specific parameter settings are as follows: 1. HMI parameter settings on the left (corresponding to laser head 1): laser power 120W, scanning speed 200mm / s, paint removal path is spiral scanning (scanning radius 1mm, number of circles 3), number of scans 2, corresponding to processing stations 1~4; 2. HMI parameter settings on the right (corresponding to laser head 2): laser power 100W, scanning speed 180mm / s, paint removal path is linear scanning (scanning length 20mm, scanning interval 0.1mm), number of scans 2, corresponding to processing stations 5~8; 3. Common parameter settings: Through the "Common Parameters" interface of the HMI, set the rotation speed of the rotary fixture unit 21 to 60 rpm (circumferential linear velocity of the coil ≈ 3.77 mm / s), the processing delay to 10 s (reserving time for laser head positioning), and automatic reset after processing; 4. After setting the parameters, press the "Save Parameters" button on the HMI to save the current parameters as a recipe (recipe number 001) for easy reference in subsequent processing of similar coils; press the "Confirm Parameters" button to control the system to verify the rationality of the parameters (such as whether the power and speed are within the rated range). After the verification is passed, the system will enter the processing standby state.

[0042] Step 4: Laser paint stripping (core processing stage) 1. Once the operator confirms that all preparations have been completed, press the "Processing Start" button on the control panel, and the equipment will officially enter the processing stage; 2. Positioning of laser processing head 31: The multi-axis motion mechanism 32 of the dual laser processing module 3 starts according to the preset path. Laser head 1 moves along the horizontal transverse component 322 (X-axis) to above station 1 (positioning accuracy ±0.02mm). The vertical lifting component 321 (Z-axis) adjusts the height of the laser head so that the laser is focused 5mm above the end of the coil (focusing accuracy ±0.01mm). At the same time, laser head 2 moves along the X-axis to above station 5 to complete the height adjustment. The two laser heads are positioned synchronously. 3. The control system sends a laser output signal, and both laser processing heads 31 simultaneously trigger laser output, scanning and removing paint from the coil ends according to a preset path; laser head 1 scans and removes paint from coils at stations 1-4, and laser head 2 scans and removes paint from coils at stations 5-8. After laser head 1 completes the paint removal at station 1, it moves along the X-axis to station 2 and repeats the positioning and scanning paint removal process, sequentially completing the processing of stations 1-4; laser head 2 simultaneously completes the processing of stations 5-8. The two laser heads work together until all stations are processed; first, the side facing the laser port is laser-removed. At this time, the exhaust pipe 6 absorbs the fumes generated during the laser paint removal process and discharges them through the exhaust pipe. Pipe 6 enters the external exhaust system. After the paint removal step on the current side is completed, the synchronous transmission component 231 is started, and the servo motor starts at the preset speed. It drives the active synchronous pulley to rotate through the coupling. The drive motor 2312 operates and drives the 8 rotating fixture units to rotate through the synchronous pulley 2313 and the toothed synchronous belt. Each rotation angle is 90°, that is, rotating to the side that has not yet been painted. When the paint removal of each side of the coil front end is completed, the drive seat 2311 rotates 180° horizontally to align the 8 rotating fixture units 21 of the second set of rotating processing group 201 with the laser processing head 31. The above paint removal work is repeated to complete the paint removal of 16 coils.

[0043] 4. Process Monitoring: During processing, the HMI displays the processing progress (e.g., "3 / 8 coils processed"), laser power, rotation speed, and the working status of the smoke extraction system in real time. If any abnormality occurs (e.g., protective door 7 is open, laser power is abnormal, coil slippage), the control system will immediately trigger an emergency stop, cut off the laser output, stop the synchronous transmission component 231, and the audible and visual alarm will emit a continuous alarm sound (sound level ≥ 85dB). The HMI will display a fault code, and the operator must press the "emergency stop" button (red), troubleshoot the problem, and restart the equipment. Step 5: Processing completion and unloading (subsequent processing stage) 1. When all 16 coils have completed the paint removal process, the control system sends a processing completion signal, the laser source stops outputting, the servo motor of the synchronous transmission component 231 stops working, and the multi-axis motion mechanism 32 drives the two laser heads to reset to the initial safe position; 2. Clean the processing station: Use a brush to clean the residual paint residue and dust on the processing station support module to ensure the station is clean; check the working status of the rotary fixture, air pressure distributor, and exhaust pipe 6, and clean it in time if there is any paint residue attached; 3. Press the "Equipment Reset" button on the HMI to return the equipment to its initial ready state and wait for the next batch of coil processing; if no further processing is required, turn off the main power supply of the equipment and tidy up the tools and materials on site.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A dual-head laser paint stripping machine, characterized in that, Includes a rack unit, comprising a base with adjustable support legs and casters, a central work surface, and a lower storage cabinet; The multi-station support module includes multiple sets of rotating clamp units arranged in parallel, a pneumatic splitter assembly, and a drive mechanism. The dual-laser processing module includes two independent laser processing heads, each of which is connected to a multi-axis motion mechanism. The multi-axis motion mechanism includes a vertical lifting component and a horizontal traversing component. The vertical lifting component uses ball screw transmission, and the horizontal traversing component uses linear guide rail and synchronous belt transmission. A dual-screen control system, comprising at least two human-computer interaction interfaces; It also includes a closed protective cover, which is set on the upper part of the frame unit to form a safe processing space.

2. The dual-head laser paint stripping machine according to claim 1, characterized in that, The multi-station bearing module is provided with rotary processing groups on both sides, and each rotary processing group includes at least 8 parallel rotary fixture units, each of which is equipped with a positioning center column and an elastic clamping block.

3. A dual-head laser paint stripping machine according to claim 2, characterized in that, The airflow pressure divider assembly includes a pressure dividing rod that can slide along the length of the workstation, and the pressure dividing rod is provided with a positioning groove corresponding to the position of the coil.

4. A dual-head laser paint stripping machine according to claim 3, characterized in that, The drive mechanism includes a synchronous transmission assembly, which includes a drive base, a drive motor, a synchronous wheel, a slide rail, and a sliding base.

5. A dual-head laser paint stripping machine according to claim 1, characterized in that, The dual-screen control system supports independent control and coordinated linkage control of the two laser processing heads.

6. A dual-head laser paint stripping machine according to claim 1, characterized in that, Each of the laser processing heads is connected to an independent exhaust pipe, which is connected to an external exhaust system via a flexible corrugated pipe.

7. A dual-head laser paint stripping machine according to claim 1, characterized in that, The two laser processing heads can simultaneously remove the paint from coils at different workstations, or work together to simultaneously remove the paint from both ends of the same coil.

8. A dual-head laser paint stripping machine according to claim 1, characterized in that, The enclosed protective cover is made of an aluminum profile frame and a transparent protective panel, and has a protective door with a safety interlock on the side.

9. A dual-head laser paint stripping machine according to claim 2, characterized in that, The multi-station bearing module is equipped with wheel covers; the multi-axis motion mechanism also includes a laser head calibration component.

10. A dual-head laser paint stripping machine according to claim 1, characterized in that, The central operating table is also equipped with a button box; the adjustable support legs of the frame unit adopt a spiral lifting structure, and the casters have a self-locking function; and a laser shield is also provided on one side of the frame unit.

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