A laser cleaning device for cleaning the inner wall of a workpiece

Abstract

A laser cleaning device for cleaning the inner wall of a workpiece includes a clamping assembly and a displacement assembly connected to the upper side of a worktable. A base is connected to the output end of the displacement assembly via a positioning assembly. A laser emitter and a light guide tube are connected to the upper side of the base. One end of the light guide tube is positioned relative to the emitting end of the laser emitter, and the other end is located inside the workpiece. A rotating assembly is installed on the outer side of the light guide tube. A vision inspection system is installed at the other end of the light guide tube. A control system is connected to the vision inspection system, the displacement assembly, the laser emitter, and the rotating assembly. This design uses the clamping assembly to hold the workpiece in place, while the laser emitter emits a laser beam. The laser beam enters the workpiece through the light guide tube to perform laser cleaning on the inner wall. The displacement and rotating assemblies allow the laser beam to move and rotate along the circumference of the workpiece, thus achieving overall cleaning of the inner wall. Combined with the vision inspection system, the cleaning effect can be observed in real time.

Description

Technical Field

[0001] This utility model relates to the field of laser processing technology, and in particular to a laser cleaning device for cleaning the inner wall of a workpiece. Background Technology

[0002] Laser cleaning is a relatively new cleaning method that has emerged in recent years. A laser head emits a laser beam, which is then directed through an optical fiber to a collimating lens. The collimated beam then illuminates a galvanometer lens, and the reciprocating vibration of the lens causes the laser beam to oscillate. The beam is then focused into a cleaning line by a planar field lens. The workpiece is placed on the cleaning line, and the line is moved to sweep across the surface to complete the cleaning process.

[0003] Traditional laser cleaning is mainly used for surface cleaning of workpieces. For cleaning the inner wall of a workpiece, the cleaning head is usually inserted into the inner wall and the laser head is rotated to reach the inner wall of the cleaning chamber. During the cleaning process, the position of the finished product needs to be changed multiple times to clean the entire inner wall. However, the coverage area of ​​laser cleaning equipment is small and the structure is relatively fixed, which leads to inconsistent cleaning degree of the inner wall and poor cleaning quality. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects and problems of poor cleaning effect in the existing technology, and to provide a laser cleaning device for cleaning the inner wall of a workpiece with better structural cleaning effect.

[0005] To achieve the above objectives, the technical solution of this utility model is: a laser cleaning device for cleaning the inner wall of a workpiece, comprising a worktable, a clamping assembly for clamping the workpiece, a base, a light guide tube, a displacement assembly, a laser emitter, a vision inspection system, and a control system. The clamping assembly and the displacement assembly are respectively connected to the upper side of the worktable. The base is connected to the output end of the displacement assembly through a positioning assembly. The laser emitter and the light guide tube are respectively connected to the upper side of the base. The emitting end of the laser emitter is arranged relative to one end of the light guide tube, and the other end of the light guide tube is located inside the workpiece. A rotating assembly is installed on the outer side of the light guide tube. The vision inspection system is installed at the other end of the light guide tube. The control system is connected to the vision inspection system, the displacement assembly, the laser emitter, and the rotating assembly.

[0006] The displacement component is used to drive the laser emitter and the light guide tube to move along the axial direction of the workpiece;

[0007] The laser emitter is used to emit laser light;

[0008] The rotating component is used to drive the light guide tube to rotate circumferentially;

[0009] The visual inspection system is used to observe the cleaning effect of laser on the inner wall of the workpiece in real time.

[0010] The control system is used to control the operation of the displacement component and the rotation component according to the cleaning effect of the laser, so that the laser cleans the inner wall of the workpiece.

[0011] The clamping assembly includes a first support and a second support. The first support and the second support are both connected to the upper side of the worktable and are located at both ends of the workpiece. A chuck is connected to the upper side of the first support and is engaged with one end of the workpiece. A center frame is connected to the upper side of the second support. Multiple limiting bolts are arranged circumferentially on the outer peripheral surface of the center frame. The multiple limiting bolts are threaded to the center frame and their bottom ends pass through the center frame and abut against the outer peripheral surface of the other end of the workpiece.

[0012] A sliding assembly is provided on the upper side of the worktable along the length of the workpiece. The sliding assembly includes a slide rail and multiple sliders. The multiple sliders are slidably connected to the slide rail. The second support is slidably connected to the slide rail via sliders. The displacement assembly is slidably connected to the slide rail via sliders.

[0013] The displacement assembly includes a guide rail, a slide, a stepper motor, and a ball screw. The guide rail is connected to the upper side of the slider. The ball screw is rotatably connected inside the guide rail. The stepper motor is mounted on one end of the guide rail, and its output end passes through the guide rail and is connected to one end of the ball screw. The slide is threaded to the ball screw and slidably connected to the upper side of the guide rail along its length. The positioning assembly is connected to the upper side of the slide. The control system is connected to the stepper motor.

[0014] The positioning assembly includes multiple screws, a base plate, and a mounting plate. The upper ends of the multiple screws are threaded to the lower side of the base, and a turntable is fitted on the outer circumferential surface of each screw. The upper ends of the multiple screws are threaded to the mounting plate, and the mounting plate is threaded to the upper side of the base plate by fixing bolts. A sliding groove is formed on the upper side of the base plate in the left-right direction, and a receiving block is slidably connected in the sliding groove. The receiving block is connected to the lower side of the mounting plate.

[0015] An auxiliary sliding component is installed on the clamping assembly. The auxiliary sliding component includes an auxiliary slide block, an auxiliary slider, and a sliding plate. The auxiliary slide block is connected to the clamping assembly. The lower part of the auxiliary slider is slidably connected to the auxiliary slide block. The sliding plate is sleeved on the upper part of the auxiliary slider and is connected to one side of the laser emitter.

[0016] The laser emitter includes a laser generator, a focusing lens, a mounting bracket, a reflector, and a base. The base is connected to the upper side of the base, and the laser generator is connected to the upper side of the base. One end of the light guide tube is mounted on the mounting bracket, and the reflector is mounted on the other end of the light guide tube. The focusing lens, the mounting bracket, and the reflector are arranged sequentially at intervals along the laser emission direction of the laser generator. The control system is connected to the laser generator.

[0017] The rotating assembly includes a rotating motor, a driving gear, and a driven gear. The rotating motor is mounted on the mounting bracket. The driving gear is connected to the output end of the rotating motor. The driven gear is sleeved on the light guide tube and meshes with the driving gear. The control system is connected to the rotating motor.

[0018] The visual inspection system includes a flow guide sleeve, a camera, and the other end of the light guide tube is installed on the flow guide sleeve. The camera is installed on the flow guide sleeve and an endoscope is installed on the camera. The endoscope is arranged relative to the inner wall of the workpiece. The control system is connected to the camera.

[0019] The laser cleaning device also includes an adapter, which includes a ferrule and a positioning cylinder. The ferrule is engaged with the other end of the workpiece and detachably connected to one end of the positioning cylinder. The positioning cylinder is coaxially arranged on the outside of the light guide tube.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. This utility model discloses a laser cleaning device for cleaning the inner wall of a workpiece. The workpiece is held in place by a clamping assembly, while a laser emitter emits a laser beam that enters the workpiece through a light guide tube to clean its inner wall. A displacement and rotation assembly allows the laser beam to move and rotate along the circumference of the workpiece, achieving comprehensive cleaning of the inner wall. Combined with a vision inspection system, the cleaning effect can be observed in real time, ensuring that the laser beam scanning trajectory covers the entire inner wall of the workpiece. Therefore, this utility model provides a superior cleaning effect.

[0022] 2. In this utility model, a laser cleaning device for cleaning the inner wall of a workpiece, the workpiece can be laid flat for cleaning via a first support and a second support. A chuck can clamp one end of the workpiece, and tightening the limiting bolts secures the other end, thus fixing the workpiece and preventing it from loosening during laser cleaning, which could lead to a decrease in cleaning effectiveness. After cleaning, loosening the limiting bolts and chuck allows for quick removal of the workpiece. Therefore, this utility model offers high stability and ease of use.

[0023] 3. In this utility model, a laser cleaning device for cleaning the inner wall of a workpiece utilizes a slider and a slide rail to adjust the position of the second support, thus accommodating workpieces of different lengths. A stepper motor drives a ball screw to rotate, which in turn causes the slide to slide along the length of the guide rail, achieving synchronous movement of the laser emitter and the light guide tube. This allows the laser beam to clean along the axial direction of the workpiece. Simultaneously, the guide rail can be adjusted via the slider, enabling the light guide tube to move to the bottom of the workpiece for cleaning. Gear transmission drives the light guide tube to rotate, thus achieving laser beam cleaning along the circumferential direction of the workpiece's inner wall. Therefore, this utility model has a wide range of applications and provides excellent cleaning results.

[0024] 4. In this utility model, a laser cleaning device for cleaning the inner wall of a workpiece utilizes a turntable to rotate a screw, which drives the base to rise and fall via screw transmission. This not only allows for vertical movement but also enables leveling of the base. The left-right position of the base can be adjusted by sliding the receiving block left and right within the groove. This adjustment ensures that the light guide tube is concentric with the workpiece, thus keeping the laser focus on the inner wall surface for better cleaning results. An adapter clamps the end of the light guide tube to prevent wobbling during rotation due to its excessive length. The auxiliary slide and auxiliary slider provide additional support for the left-right movement of the laser emitter, making the entire movement process smoother. Therefore, this utility model offers better cleaning results and more stable operation.

[0025] 5. In this utility model, a laser cleaning device for cleaning the inner wall of a workpiece uses a reflector that extends into the workpiece through a light guide tube to clean the inner wall. The reflector is much smaller than a conventional cleaning head, making it suitable for cleaning the inner walls of workpieces with small inner diameters. By using a condenser lens, the focused beam travels along the inside of the light guide tube, ensuring that the laser scanning focal point always falls on the inner wall of the workpiece. The inclusion of a camera and a CCD camera allows for real-time monitoring of the cleaning effect and laser output during the cleaning process, enabling timely adjustment of cleaning parameters and improving production efficiency and yield. The ferrule is detachably connected to the positioning cylinder, allowing for the selection of a ferrule matching the workpiece diameter before connection to the positioning cylinder, thus accommodating workpieces of different diameters. Therefore, this utility model is convenient to use, provides good cleaning results, and has a wide range of applications. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is a structural schematic diagram of the worktable, sliding component, displacement component, and clamping component in this utility model.

[0028] Figure 3 yes Figure 2Enlarged diagram of point A in the middle.

[0029] Figure 4 This is a schematic diagram of the positioning component in this utility model.

[0030] Figure 5 This is a schematic diagram of the structure of the laser emitter, light guide tube, and vision inspection system in this utility model.

[0031] Figure 6 yes Figure 5 Enlarged diagram of point B in the middle.

[0032] Figure 7 This is a partial cross-sectional schematic diagram of the laser emitter and vision inspection system in this utility model.

[0033] Figure 8 This is a partial cross-sectional schematic diagram of the light guide tube and vision inspection system in this utility model.

[0034] Figure 9 This is a schematic diagram of the displacement component in this utility model.

[0035] Figure 10 This is a cross-sectional schematic diagram of the displacement component in this utility model.

[0036] Figure 11 This is a connection block diagram of the control system in this utility model.

[0037] In the diagram: 1. Worktable; 2. Sliding assembly; 21. Slide rail; 22. Slider; 3. Clamping assembly; 31. First support; 32. Second support; 33. Chuck; 34. Center frame; 35. Limit bolt; 4. Base; 5. Positioning assembly; 51. Screw; 52. Turntable; 53. Base plate; 54. Slide groove; 55. Mounting plate; 56. Fixing bolt; 57. Receiving block; 6. Rotating assembly; 61. Rotating motor; 62. Drive gear; 63. Driven gear; 7. Displacement assembly; 71. Guide rail seat; 72. Slide seat; 73. Stepper motor; 74. Ball screw; [The last part is incomplete and likely refers to a different component, possibly a light source.] 75. Electrical switch, 76. Sensor plate, 8. Laser emitter, 81. Laser generator, 82. Focusing lens, 83. Mounting bracket, 84. Reflector, 85. Base, 9. Adapter, 91. Sleeve, 92. Positioning cylinder, 10. Auxiliary sliding assembly, 101. Auxiliary slide, 102. Auxiliary slider, 103. Slide plate, 11. Workpiece, 12. Light guide tube, 13. Vision inspection system, 131. Flow guide sleeve, 132. Camera, 133. Endoscope, 134. Mounting base, 135. CCD camera, 136. Light-transmitting reflector, 14. Control system. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1:

[0040] See Figures 1 to 11 A laser cleaning device for cleaning the inner wall of a workpiece includes a worktable 1, a clamping assembly 3 for clamping the workpiece 11, a base 4, a light guide tube 12, a displacement assembly 7, a laser emitter 8, a vision inspection system 13, and a control system 14. The clamping assembly 3 and the displacement assembly 7 are respectively connected to the upper side of the worktable 1. The base 4 is connected to the output end of the displacement assembly 7 through a positioning assembly 5. The laser emitter 8 and the light guide tube 12 are respectively connected to the upper side of the base 4. The emitting end of the laser emitter 8 is arranged relative to one end of the light guide tube 5. The other end of the light guide tube 12 is located inside the workpiece 11. A rotating assembly 6 is installed on the outer side of the light guide tube 5. The vision inspection system 13 is installed at the other end of the light guide tube 5. The control system 14 is connected to the vision inspection system 13, the displacement assembly 7, the laser emitter 8, and the rotating assembly 6.

[0041] The displacement component 7 is used to drive the laser emitter 8 and the light guide tube 12 to move along the axial direction of the workpiece 11;

[0042] The laser emitter 8 is used to emit laser light;

[0043] The rotating component 6 is used to drive the light guide tube 5 to rotate circumferentially;

[0044] The visual inspection system 13 is used to observe the dirt on the inner wall of the workpiece 11 and the cleaning effect in real time.

[0045] The control system 14 is used to control the operation of the displacement component 7 and the rotation component 6 according to the dirt and cleaning effect, so that the laser cleans the inner wall of the workpiece.

[0046] In this embodiment, a displacement sensor and an angle sensor are also provided. The displacement sensor is installed on the displacement component 7 and is used to measure the moving distance of the displacement component 7. The angle sensor is installed on the rotation component 6 and is used to measure the rotation angle of the light guide tube 12.

[0047] During cleaning, the workpiece 11 to be cleaned is first placed on the clamping assembly 3. After being clamped by the clamping assembly 3, the position of the laser emitter 8 and the light guide tube 12 is adjusted by the positioning assembly 5. Then, the displacement assembly 7 drives the light guide tube 12 into the inner wall of the workpiece 11, and the control system 14 controls the laser emitter 8 to emit laser light. The focusing of the laser and the cleaning effect of the laser are observed by the vision inspection system 13. The position of the laser emitter 8 and the light guide tube 12 is adjusted again by the positioning assembly 5 to achieve the best laser cleaning effect. Then, the condition of dirt inside the workpiece is observed by the vision inspection system 13. After the rotating assembly 6 rotates one revolution, the laser beam cleans one circumference of the inner wall of the workpiece 11. The displacement component 7 moves one revolution, and then the rotation component 6 rotates another revolution, repeating this process to thoroughly clean the inner wall of the workpiece 11. The travel route is planned based on the size of the dirt. If the dirt only exists in a part of the area, a back-and-forth scanning method can be used for cleaning. That is, the size of the dirt is observed by the vision inspection system 13, and the required rotation angle of the rotation component 6 is calculated by the control system 14. Then, the rotation component 6 is controlled to rotate the corresponding angle. When the angle detected by the angle sensor reaches the calculated rotation angle, the displacement component 7 is controlled to move a certain distance, which is the width range of laser cleaning. Then, the rotation component 6 is controlled to rotate in the opposite direction. This repetitive operation is used to clean the dirt area.

[0048] Example 2:

[0049] The basic content is the same as in Example 1, except that:

[0050] See Figure 2 and Figure 3The clamping assembly 3 includes a first support 31 and a second support 32. Both the first support 31 and the second support 32 are connected to the upper side of the worktable 1 and are located at both ends of the workpiece 11. A chuck 33 is connected to the upper side of the first support 31, and the chuck 33 engages with one end of the workpiece 11. A center frame 34 is connected to the upper side of the second support 32. Multiple limiting bolts 35 are circumferentially arranged on the outer periphery of the center frame 34. These limiting bolts 35 are threaded onto the center frame 34, and their bottom ends pass through the center frame 34 and abut against the outer periphery of the other end of the workpiece 11. The upper side of the worktable 1... A sliding assembly 2 is provided along the length of the workpiece 11. The sliding assembly 2 includes a slide rail 21 and a plurality of sliders 22. The plurality of sliders 22 are slidably connected to the slide rail 21. The second support 32 is slidably connected to the slide rail 21 through the sliders 22. The displacement assembly 7 is slidably connected to the slide rail 21 through the sliders 22. The laser cleaning device also includes an adapter 9. The adapter 9 includes a retainer 91 and a positioning cylinder 92. The retainer 91 is snapped onto the other end of the workpiece 11 and is detachably connected to one end of the positioning cylinder 92. The positioning cylinder 92 is coaxially arranged on the outside of the light guide tube 12.

[0051] In this embodiment, the positions of the second support 32 and the displacement component 7 are first adjusted according to the length of the workpiece 11. Then, the workpiece 11 is placed horizontally, one end of the workpiece 11 is fixed by the chuck 33, and the other end of the workpiece 11 passes through the center frame 34. The limiting bolt 35 is then tightened to fix the other end of the workpiece 11. Then, the ferrule 91 is installed on the other end of the workpiece 11. When the light guide tube 12 moves, it enters the interior of the workpiece 11 through the positioning cylinder 92 and the ferrule. The sliding component 2 may include an electric cylinder. The electric cylinder is connected to the slider 22. The extension and retraction of the electric cylinder can be controlled by the control system 14. Combined with the displacement sensor, the automatic adjustment of the position of the second support 32 and the displacement component 7 is realized.

[0052] Example 3:

[0053] The basic content is the same as in Example 1, except that:

[0054] See Figure 9 and Figure 10The displacement component 7 includes a guide rail seat 71, a slide 72, a stepper motor 73, and a ball screw 74. The guide rail seat 71 is connected to the upper side of the slider 22. The ball screw 74 is rotatably connected to the guide rail seat 71. The stepper motor 73 is installed at one end of the guide rail seat 71, and its output end passes through the guide rail seat 71 and is connected to one end of the ball screw 74. The slide 72 is threaded to the ball screw 74 and is slidably connected to the upper side of the guide rail seat 71 along the length direction of the guide rail seat 71. The positioning component 5 is connected to the upper side of the slide 72. The control system 14 is connected to the stepper motor 73.

[0055] In this embodiment, the displacement component 7 further includes a photoelectric switch 75 and a sensing plate 76. The sensing plate 76 is mounted on the slide 72 and is L-shaped. The vertical part is used to pass through the photoelectric switch 75. The photoelectric switch 75 includes a zero-position photoelectric switch and an end-position photoelectric switch. The zero-position photoelectric switch and the end-position photoelectric switch are respectively mounted at the beginning and end of the guide rail 71. The control system 14 controls the stepper motor 73 to work through the controller. After the device is powered on, it is initialized and the stepper motor 73 is driven to rotate, thereby driving the slide 72 and the sensing plate 76 to move towards the zero-position photoelectric switch. When the sensing plate 76 moves to the zero-position photoelectric switch, it stops, and the device initialization is completed. When the displacement component 7 is working, the control system 14 controls the stepper motor 73 to rotate through the controller, thereby driving the slide 72 and the sensing plate 76 to move towards the end-position photoelectric switch. When the sensing plate 76 moves to the end-position photoelectric switch, it stops.

[0056] Example 4:

[0057] The basic content is the same as in Example 1, except that:

[0058] See Figure 3 and Figure 4 The positioning component 5 includes multiple screws 51, a base plate 53, and a mounting plate 55. The upper ends of the multiple screws 51 are threaded to the lower side of the base 4, and a turntable 52 is sleeved on the outer circumferential surface of each screw 51. The upper ends of multiple screws 51 are threaded to the mounting plate 55. The mounting plate 55 is threaded to the upper side of the base plate 53 by fixing bolts 56. The upper side of the base plate 53 is provided with a sliding groove 54 in the left-right direction. A receiving block 57 is slidably connected in the sliding groove 54. The receiving block 57 is connected to the lower side of the mounting plate 55. An auxiliary sliding assembly 10 is installed on the clamping assembly 3. The auxiliary sliding assembly 10 includes an auxiliary slide block 101, an auxiliary slider 102, and a sliding plate 103. The auxiliary slide block 101 is connected to the clamping assembly 3. The lower part of the auxiliary slider 102 is slidably connected to the auxiliary slide block 101. The sliding plate 103 is sleeved on the upper part of the auxiliary slider 102 and is connected to one side of the laser emitter 8.

[0059] In this embodiment, when it is necessary to adjust the left and right direction of the laser emitter 8, the fixing bolt 56 is loosened, and then the receiving block 57 is moved until it reaches the set position. At this time, the auxiliary slider 102 slides synchronously on the auxiliary slide block 101. Then the fixing bolt 56 is tightened. When it is necessary to adjust the height of the laser emitter 8, the turntable 52 is rotated at the same time, so that the base 4 moves up and down along the external thread of the screw 51.

[0060] Example 5:

[0061] The basic content is the same as in Example 1, except that:

[0062] See Figure 5 and Figure 8 The laser emitter 8 includes a laser generator 81, a focusing lens 82, a mounting bracket 83, a reflector 84, and a base 85. The base 85 is connected to the upper side of the base 4, and the laser generator 81 is connected to the upper side of the base 85. One end of the light guide tube 12 is mounted on the mounting bracket 83, and the reflector 84 is mounted on the other end of the light guide tube 12. The focusing lens 82, the mounting bracket 83, and the reflector 84 are arranged sequentially at intervals along the laser emission direction of the laser generator 81. The control system 14 is connected to the laser generator 81.

[0063] In this embodiment, the base 85 can adopt a six-dimensional adjustment platform. The six-dimensional adjustment platform is equipped with a first X-axis rotation adjustment knob, a first Y-axis rotation adjustment knob, a first Z-axis rotation adjustment knob, a first X-axis axial adjustment knob, a first Y-axis axial adjustment knob, and a first Z-axis axial adjustment knob, which respectively control the rotation direction and axial direction of the X, Y, and Z axes. Through these six adjustment knobs, the six-dimensional adjustment platform can adjust the position of the laser emitter 8 so that the emitted laser is concentric with the light guide tube 12. For its specific structure and principle, please refer to the six-dimensional adjustment platform in the laser cleaning device for the inner wall paint of a flat-tail large shaft disclosed in Chinese Patent CN116727365A.

[0064] A collimating lens is also provided on the focusing lens 82. The focal point of the collimating lens coincides with the output end of the laser generator 81. The focusing lens 82 is set opposite to the collimating lens and is located on the side of the collimating lens away from the laser generator 81. The focal length of the focusing lens 82 matches the size of the workpiece 11. The focal length of the focusing lens 82 must be greater than or equal to the sum of the length of the workpiece 11 and the maximum inner wall radius of the workpiece 11.

[0065] Example 6:

[0066] The basic content is the same as in Example 1, except that:

[0067] See Figure 6 The rotating assembly 6 includes a rotating motor 61, a driving gear 62, and a driven gear 63. The rotating motor 61 is mounted on the mounting bracket 83. The driving gear 62 is connected to the output end of the rotating motor 61. The driven gear 63 is sleeved on the light guide tube 12 and meshes with the driving gear 62. The control system 14 is connected to the rotating motor 61.

[0068] In this embodiment, the control system 14 controls the rotating motor 61 to work through the controller, the angle sensor is used to obtain the rotation angle of the drive gear 62, and calculates the rotation angle of the light guide tube 12 according to the gear ratio. The rotation cleaning or back-and-forth scanning cleaning of the inside of the workpiece 11 is realized by rotating the light guide tube 12.

[0069] Example 7:

[0070] The basic content is the same as Example 5, except that:

[0071] See Figure 7 and Figure 8 The visual inspection system 13 includes a flow guide sleeve 131 and a camera 132. The flow guide sleeve 131 is installed with the other end of the light guide tube 12. The camera is installed on the flow guide sleeve 131 and an endoscope 133 is installed on the camera 131. The endoscope 133 is arranged relative to the inner wall of the workpiece 11. The control system 14 is connected to the camera 132.

[0072] In this embodiment, the visual inspection system 13 also includes a mounting base 134, a CCD camera 135, and a light-transmitting reflector 136. The mounting base 134 is installed at the emitting end of the laser generator 81, the light-transmitting reflector 136 is installed inside the mounting base 134, and the CCD camera 135 is installed on the mounting base 134 and arranged relative to the light-transmitting reflector 136. The endoscope 133 has its own illumination source. When the cleaning operation begins, the laser emitted by the laser generator 81 is reflected by the reflector 84 and focused onto the inner wall of the workpiece 11 through the opening. The cleaned inner wall appears metallic bright, while the uncleaned inner wall remains... The paint is red. After the camera 132 collects these images through the endoscope 133, it is transmitted to the external control system 14. The operator can adjust the parameters in real time according to the product cleaning status. At the same time, part of the laser emitted by the laser generator 81 is reflected by the reflector 84 to the reflective surface of the light-transmitting reflector 136, and then reflected to the CCD camera 135. After the CCD camera 135 collects these images, it is transmitted to the external control system 14. The operator can see whether the laser is off-center and the laser intensity based on the images transmitted back by the CCD camera 135, and adjust the parameters in real time.

Claims

1. A laser cleaning device for cleaning the inner wall of a workpiece, characterized in that: The system includes a worktable (1), a clamping assembly (3) for clamping a workpiece (11), a base (4), a light guide tube (12), a displacement assembly (7), a laser emitter (8), a vision inspection system (13), and a control system (14). The clamping assembly (3) and the displacement assembly (7) are respectively connected to the upper side of the worktable (1). The base (4) is connected to the output end of the displacement assembly (7) through a positioning assembly (5). The laser emitter (8) and the light guide tube (12) are respectively connected to the upper side of the base (4). The emitting end of the laser emitter (8) is arranged relative to one end of the light guide tube (12). The other end of the light guide tube (12) is located inside the workpiece (11). A rotating assembly (6) is installed on the outside of the light guide tube (12). The vision inspection system (13) is installed on the other end of the light guide tube (12). The control system (14) is connected to the vision inspection system (13), the displacement assembly (7), the laser emitter (8), and the rotating assembly (6). The displacement component (7) is used to drive the laser emitter (8) and the light guide tube (12) to move along the axial direction of the workpiece (11); The laser emitter (8) is used to emit laser light; The rotating component (6) is used to drive the light guide tube (12) to rotate circumferentially; The visual inspection system (13) is used to observe the dirt on the inner wall of the workpiece (11) and the cleaning effect in real time; The control system (14) is used to control the operation of the displacement component (7) and the rotation component (6) according to the dirt and cleaning effect, so that the laser cleans the inner wall of the workpiece.

2. The laser cleaning device for cleaning the inner wall of a workpiece according to claim 1, characterized in that: The clamping assembly (3) includes a first support (31) and a second support (32). The first support (31) and the second support (32) are both connected to the upper side of the worktable (1) and are located at both ends of the workpiece (11). A chuck (33) is connected to the upper side of the first support (31). The chuck (33) is engaged with one end of the workpiece (11). A center frame (34) is connected to the upper side of the second support (32). A plurality of limiting bolts (35) are provided on the outer peripheral surface of the center frame (34) along the circumferential direction. The plurality of limiting bolts (35) are threaded to the center frame (34) and their bottom ends pass through the center frame (34) and abut against the outer peripheral surface of the other end of the workpiece (11).

3. The laser cleaning device for cleaning the inner wall of a workpiece according to claim 2, characterized in that: A sliding assembly (2) is provided on the upper side of the worktable (1) along the length direction of the workpiece (11). The sliding assembly (2) includes a slide rail (21) and a plurality of sliders (22). The plurality of sliders (22) are slidably connected to the slide rail (21). The second support (32) is slidably connected to the slide rail (21) through the sliders (22). The displacement assembly (7) is slidably connected to the slide rail (21) through the sliders (22).

4. A laser cleaning device for cleaning the inner wall of a workpiece according to claim 3, characterized in that: The displacement component (7) includes a guide rail seat (71), a slide (72), a stepper motor (73), and a ball screw (74). The guide rail seat (71) is connected to the upper side of the slider (22). The ball screw (74) is rotatably connected to the guide rail seat (71). The stepper motor (73) is installed at one end of the guide rail seat (71), and its output end passes through the guide rail seat (71) and is connected to one end of the ball screw (74). The slide (72) is threaded to the ball screw (74) and slides along the length of the guide rail seat (71) on the upper side of the guide rail seat (71). The positioning component (5) is connected to the upper side of the slide (72). The control system (14) is connected to the stepper motor (73).

5. A laser cleaning device for cleaning the inner wall of a workpiece according to claim 1, characterized in that: The positioning component (5) includes multiple screws (51), a base plate (53), and a mounting plate (55). The upper ends of the multiple screws (51) are threaded to the lower side of the base (4). A turntable (52) is fitted on the outer circumferential surface of the screws (51). The upper ends of the multiple screws (51) are threaded to the mounting plate (55). The mounting plate (55) is threaded to the upper side of the base plate (53) by fixing bolts (56). A sliding groove (54) is opened on the upper side of the base plate (53) in the left-right direction. A receiving block (57) is slidably connected in the sliding groove (54). The receiving block (57) is connected to the lower side of the mounting plate (55).

6. A laser cleaning apparatus for cleaning the inner wall of a workpiece according to claim 5, characterized in that: An auxiliary sliding assembly (10) is installed on the clamping assembly (3). The auxiliary sliding assembly (10) includes an auxiliary slide (101), an auxiliary slider (102), and a sliding plate (103). The auxiliary slide (101) is connected to the clamping assembly (3). The lower part of the auxiliary slider (102) is slidably connected to the auxiliary slide (101). The sliding plate (103) is sleeved on the upper part of the auxiliary slider (102) and is connected to one side of the laser emitter (8).

7. A laser cleaning device for cleaning the inner wall of a workpiece according to claim 1, characterized in that: The laser emitter (8) includes a laser generator (81), a focusing lens (82), a mounting bracket (83), a reflector (84), and a base (85). The base (85) is connected to the upper side of the base (4), and the laser generator (81) is connected to the upper side of the base (85). One end of the light guide tube (12) is mounted on the mounting bracket (83), and the reflector (84) is mounted on the other end of the light guide tube (12). The focusing lens (82), the mounting bracket (83), and the reflector (84) are arranged sequentially at intervals along the laser emission direction of the laser generator (81). The control system (14) is connected to the laser generator (81).

8. A laser cleaning apparatus for cleaning the inner wall of a workpiece according to claim 7, characterized in that: The rotating assembly (6) includes a rotating motor (61), a driving gear (62), and a driven gear (63). The rotating motor (61) is mounted on the mounting bracket (83). The driving gear (62) is connected to the output end of the rotating motor (61). The driven gear (63) is sleeved on the light guide tube (12) and meshed with the driving gear (62). The control system (14) is connected to the rotating motor (61).

9. A laser cleaning apparatus for cleaning the inner wall of a workpiece according to claim 7, characterized in that: The visual inspection system (13) includes a flow guide sleeve (131) and a camera (132). The flow guide sleeve (131) is installed on the other end of the light guide tube (12). The camera (132) is installed on the flow guide sleeve (131). An endoscope (133) is installed on the camera (132). The endoscope (133) is arranged relative to the inner wall of the workpiece (11). The control system (14) is connected to the camera (132).

10. A laser cleaning device for cleaning the inner wall of a workpiece according to claim 1, characterized in that: The laser cleaning device also includes an adapter (9), which includes a sleeve (91) and a positioning cylinder (92). The sleeve (91) is snapped onto the other end of the workpiece (11) and detachably connected to one end of the positioning cylinder (92). The positioning cylinder (92) is coaxially arranged on the outside of the light guide tube (12).

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