Visual imaging monitoring device for laser processing

Abstract

According to the laser processing visual imaging monitoring device, the light absorption device is arranged at the position where the laser is reflected by the mirror surface of the beam combining mechanism, the light reflected by the beam combining mirror is absorbed through the light absorption device, heat dissipation is carried out, and the situation that the light reflected by the beam combining mirror generates heat in the shell is avoided; therefore, the laser focus position offset caused by the thermal lens effect is avoided, and the laser processing effect is guaranteed.

Description

Technical Field

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

[0002] Laser processing technology, as an advanced manufacturing technology, is based on the unique interaction between laser beam and material to achieve precise cutting, welding, surface treatment, drilling and micro-processing of materials. Laser processing equipment is usually composed of multiple key components such as optical path system, imaging system and motion system. Among them, the imaging system is particularly critical. It can capture the image of the surface of the workpiece to be processed in real time during the processing process, and accurately calculate the position of the feature points in the image through sophisticated software algorithms, thereby realizing the visual positioning of the workpiece and real-time monitoring of the surface quality of the workpiece.

[0003] In laser processing, especially in the field of laser precision processing, the integration of laser processing technology and visual inspection technology has become an inevitable trend in the development of the industry. This mainly includes two methods: paraxial visual inspection processing and coaxial visual inspection processing. Among them, in coaxial visual inspection, when the laser light path and the visual light path are coupled together through the beam combiner, since the laser cannot be guaranteed to pass through the beam combiner completely, a small part of the light will still be reflected to the shell, causing the temperature to rise. This temperature rise will produce a thermal lens effect, causing the optical components to expand due to heat, resulting in the position of the laser focus to shift, which seriously affects the processing effect. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a laser processing visual imaging monitoring device to solve the problem of existing coaxial visual detection, in which the temperature rises and a thermal lens effect is generated due to the reflection of part of the light to the shell by the beam combiner, thus affecting the laser processing effect.

[0005] A laser processing visual imaging monitoring device provided in an embodiment of the present application includes an imaging device, a beam combining mechanism and a light absorbing device;

[0006] The beam combining mechanism comprises a beam combining upper shell, a beam combining mirror and a beam combining lower shell; the beam combining mirror is arranged at a certain angle to the horizontal direction, and the beam combining upper shell and the beam combining lower shell surround the beam combining mirror;

[0007] The top of the beam combining mechanism is used to inject laser light, and the laser light is reflected to one side of the beam combining mechanism by the mirror surface of the beam combining mirror. A light absorbing device is arranged on the same side of the beam combining mechanism, and the light absorbing device is used to absorb the light reflected by the beam combining mirror and dissipate heat;

[0008] An imaging device is arranged on a side of the beam combining mechanism away from the light absorbing device.

[0009] In the above technical solution, a light absorbing device is arranged at the position where the mirror of the beam combining mechanism reflects the laser. The light reflected by the beam combining mirror is absorbed by the light absorbing device, and heat is dissipated to prevent the light reflected by the beam combining mirror from generating heat in the shell, thereby avoiding the laser focus position deviation caused by the thermal lens effect and ensuring the laser processing effect.

[0010] In some optional embodiments, the light absorbing device includes a light absorbing structure and a heat dissipating device;

[0011] The front side of the light absorbing structure is arranged close to the beam combining mirror, and the back side of the light absorbing structure is provided with a heat dissipation device.

[0012] In the above technical solution, the front side of the light absorbing structure is arranged close to the beam combiner, which can directly and effectively absorb the laser light reflected by the beam combiner. The heat dissipation device installed on the back side of the light absorbing structure can quickly and effectively dissipate the heat energy converted from the absorbed laser energy, thereby avoiding the temperature rise of the laser processing visual imaging monitoring device.

[0013] In some optional embodiments, the front side of the light absorbing structure includes a plurality of V-shaped grooves, and the angle of the V-shaped grooves is greater than 60 degrees and less than 120 degrees.

[0014] In the above technical solution, the V-shaped groove increases the surface area of ​​the light-absorbing structure, and when the laser light reflected by the beam combiner irradiates the front of the light-absorbing structure, most of the light energy is directly absorbed by the light-absorbing structure, and a small part of the light energy is reflected from one side of the V-shaped groove to the other side and then absorbed by the light-absorbing structure, thereby improving the light absorption efficiency.

[0015] In some optional embodiments, the heat dissipation device includes a water-cooling water channel; the water-cooling water channel includes a water inlet and a water outlet.

[0016] In the above technical solution, water cooling is adopted. The water cooling water channel absorbs and takes away the heat generated by the light absorbing structure through circulating water, thereby achieving efficient heat dissipation. Water has good thermal conductivity and can quickly take away the heat from the light absorbing structure. In addition, the water cooling method has higher heat dissipation efficiency and lower noise, which is more in line with the requirements of modern industrial production for environmental protection and energy saving.

[0017] In some optional embodiments, the light absorption device also includes a water-cooling water channel cover plate, which connects the water inlet pipe and the water outlet pipe of the water-cooling circulation machine, the water outlet pipe of the water-cooling circulation machine is connected to the water inlet of the water-cooling water channel, and the water inlet pipe of the water-cooling circulation machine is connected to the water outlet of the water-cooling water channel.

[0018] In the above technical solution, the heat generated by the light-absorbing structure can be continuously and efficiently removed by continuously circulating cooling water through the water-cooling circulation machine. The water-cooling water channel cover plate is a key component connecting the water-cooling circulation machine and the water-cooling water channel, ensuring that the cooling water can flow in and out smoothly, thereby greatly improving the heat dissipation efficiency. The water-cooling circulation machine, the water-cooling water channel cover plate and the water-cooling water channel together constitute a closed cooling circulation system. This design can effectively prevent external dust, impurities, etc. from entering the cooling water channel, keep the water channel clean, and thus improve the stability and reliability of the system.

[0019] In some optional embodiments, the heat dissipation device includes a fan.

[0020] In the above technical solution, the fan can quickly generate wind flow to effectively remove the heat on the heat sink, thereby achieving efficient heat dissipation. In addition, the cost of the fan heat sink is relatively low. The fan itself has a simple structure, and the manufacturing and maintenance costs are low. At the same time, its efficient heat dissipation performance also enables the device to save energy during operation, further reducing costs.

[0021] In some optional embodiments, the imaging device includes a camera, a pressing block and a reflecting mechanism; the lens of the camera is detachably connected to the reflecting mechanism via the pressing block.

[0022] In the above technical solution, the imaging device includes a camera, a clamping block and a reflection mechanism. The imaging light reflected by the beam combiner reaches the camera after passing through the reflector, thereby realizing that the visual detection optical path is independent of the processing laser optical path. In addition, the imaging device is vertically arranged to utilize the space in the z-axis direction, making the space occupancy of the entire device more reasonable.

[0023] In some optional implementations, the pressing block is sleeved on the lens of the camera; a plurality of fixing screws are evenly arranged on the edge of the pressing block, and the pressing block is installed on the reflection mechanism through the plurality of fixing screws.

[0024] In the above technical solution, the clamping block is a ring that is mounted on the camera lens, and a plurality of fixing screws are evenly arranged on the edge of the clamping block, for example, a fixing screw is arranged every 90 degrees on the clamping block, and a total of four fixing screws are arranged. The clamping block is mounted on the reflection mechanism through these fixing screws, and the clamping block is mounted on the camera, thereby realizing the connection between the camera and the reflection mechanism.

[0025] Furthermore, it also includes a fixed top screw, which acts on the camera lens to fix the rotation angle of the camera lens around its axis to prevent the camera lens from rotating during use. The fixed top screw is a fastener, usually used between the shaft and the sleeve to prevent the shaft and the sleeve from changing position during use. Its working principle is mainly based on the fastening principle of screws. The fixed top screw is mainly used for the shaft hole, and it can prevent the shaft from moving back and forth by holding it up, thereby playing a positioning role.

[0026] In some optional embodiments, the reflection mechanism includes: a reflector housing, a reflector, a reflector pad, a corrugated spring pad, and a reflector cover plate;

[0027] The reflector housing and the reflector cover plate surround the reflector, the reflector pad and the corrugated spring pad;

[0028] The reflector is placed on a reflector pad, and the back of the reflector contacts the reflector pad; the reflector pad contacts the reflector cover through a corrugated spring pad.

[0029] In the above technical solution, the reflector is placed on the reflector pad, and the position of the reflector can be adjusted by moving the reflector on the reflector pad. The corrugated spring washer provides a buffer and a pressing effect between the reflector pad and the reflector cover. After the reflector cover is installed, the corrugated spring washer is used to press the reflector on the reflector pad to prevent the reflector from sliding on the reflector pad during processing. The reflector housing and the reflector cover tightly surround the reflector, the reflector pad and the corrugated spring washer to form a solid structure. This design can effectively prevent the reflector from being affected by external vibration or impact during laser processing, and ensure the stability and accuracy of the reflector.

[0030] In some optional embodiments, the reflection mechanism further comprises: a steel ball, a first adjusting ball screw, and a second adjusting ball screw;

[0031] The steel ball serves as a fixed fulcrum and is in point contact with the reflector, and the first adjusting ball screw and the second adjusting ball screw are both in point contact with different positions of the reflector.

[0032] In the above technical solution, a steel ball is used to press against a point on the reflector, and the pitch and elevation angles of the reflector are adjusted respectively by the first adjusting ball screw and the second adjusting ball screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the exploded structure of the laser processing visual imaging monitoring device provided in an embodiment of the present application;

[0035] Figure 2 Schematic diagram of the laser processing visual imaging monitoring device provided in an embodiment of the present application.

[0036] Icon: 1-camera, 2-pressing block, 3-reflector housing, 4-fixing top screw, 5-steel ball, 6-reflector, 7-reflector pad, 8-corrugated spring washer, 9-reflector cover, 10-first adjusting ball screw, 11-second adjusting ball screw, 12-light absorbing structure, 13-water-cooling water channel cover, 14-water pipeline, 15-beam-combining upper housing, 16-beam-combining mirror, 17-beam-combining lower housing. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0038] Please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 The structure diagram of a laser processing visual imaging monitoring device provided in an embodiment of the present application includes an imaging device, a beam combining mechanism and a light absorbing device. The beam combining mechanism has an optical path channel for an incident laser beam to be injected, such as Figure 2 As shown. During laser processing, a condenser is set just below the beam combining mechanism. The condenser is used to focus the laser light emitted by the beam combining mechanism to a point, thereby significantly enhancing the brightness and energy density of the light. When the laser beam passes through the condenser, due to the difference in the curvature of the lens and the refractive index of the material, the light will be refracted and focused to the focal point. This focusing effect allows the laser beam to form a high-energy-density light spot on the target object, thereby achieving the high precision and high efficiency required for laser processing.

[0039] The beam combining mechanism includes a beam combining upper shell 15, a beam combining mirror 16 and a beam combining lower shell 17; the beam combining mirror 16 is an optical element, usually composed of a lens or a reflector, and its main function is to combine two or more wavelengths of light into one optical path through transmission and reflection. In this embodiment, the laser optical path and the imaging optical path are coupled together through the beam combining mirror 16. The beam combining mirror 16 is set at a certain angle to the horizontal direction, and the beam combining upper shell 15 and the beam combining lower shell 17 surround the beam combining mirror 16; the upper part of the beam combining mechanism is used to inject laser light, and the laser light is reflected to one side of the beam combining mechanism through the mirror surface of the beam combining mirror 16. A light absorbing device is set on the same side of the beam combining mechanism, and the light absorbing device is used to absorb the light reflected by the beam combining mirror 16 and dissipate heat; an imaging device is set on the side of the beam combining mechanism away from the light absorbing device.

[0040] Specifically, the light absorbing device has two functions: absorbing light and dissipating heat. The structure for absorbing light can be made of black or dark materials. Generally speaking, black or dark materials have a strong ability to absorb light because they can absorb light of multiple wavelengths, including lasers. The structure for absorbing light can also be made of metal materials, such as aluminum, titanium, tungsten, copper, etc. These metals can usually absorb laser energy and convert it into heat energy. Their high thermal conductivity and electrical conductivity help to quickly transfer and dissipate heat, protecting the surface of the protected object. The structure for absorbing light can also be made of carbon-based materials, such as carbon fiber and certain types of carbon black. These materials also have a strong ability to absorb lasers. The structure for dissipating heat can be a heat sink, or an active heat dissipation device, such as an air-cooled or water-cooled heat dissipation device.

[0041] In an embodiment of the present application, a light absorbing device is provided at the position where the mirror of the beam combining mechanism reflects the laser. The light reflected by the beam combining mirror 16 is absorbed by the light absorbing device, and heat is dissipated to prevent the light reflected by the beam combining mirror 16 from generating heat in the shell, thereby avoiding the laser focus position offset caused by the thermal lens effect and ensuring the laser processing effect.

[0042] In some optional embodiments, the light absorbing device includes a light absorbing structure 12 and a heat dissipation device;

[0043] The front side of the light absorbing structure 12 is arranged close to the beam combining mirror 16 , and the back side of the light absorbing structure 12 is provided with a heat dissipation device.

[0044] In the embodiment of the present application, the front side of the light absorbing structure 12 is arranged close to the beam combining mirror 16, and can directly and effectively absorb the laser light reflected by the beam combining mirror 16. The heat dissipation device installed on the back side of the light absorbing structure 12 can quickly and effectively dissipate the heat energy converted from the absorbed laser energy, thereby avoiding the temperature rise of the laser processing visual imaging monitoring device.

[0045] In some optional embodiments, the front surface of the light absorbing structure 12 includes a plurality of V-shaped grooves, and the angle of the V-shaped grooves is greater than 60 degrees and less than 120 degrees, for example, 75 degrees, 90 degrees, 105 degrees, etc.

[0046] In the embodiment of the present application, the V-shaped groove increases the surface area of ​​the light absorbing structure 12, and when the laser light reflected by the beam combiner 16 irradiates the front of the light absorbing structure 12, most of the light energy is directly absorbed by the light absorbing structure 12, and a small part of the light energy is reflected from one side of the V-shaped groove to the other side and then absorbed by the light absorbing structure 12, thereby improving the light absorption efficiency.

[0047] In some optional embodiments, the heat dissipation device includes a water-cooled water channel; the water-cooled water channel includes a water inlet and a water outlet. In the embodiment of the present application, a water-cooled heat dissipation method is adopted, and the water-cooled water channel absorbs and takes away the heat generated by the light-absorbing structure 12 through circulating water, thereby achieving an efficient heat dissipation effect. Water has good thermal conductivity and can quickly take away heat from the light-absorbing structure 12. In addition, the water-cooled cooling method has higher heat dissipation efficiency and lower noise, which is more in line with the requirements of modern industrial production for environmental protection and energy saving.

[0048] In some optional embodiments, the light absorption device also includes a water-cooling water channel cover plate 13, which connects the water inlet pipe and the water outlet pipe of the water-cooling circulation machine, the water outlet pipe of the water-cooling circulation machine is connected to the water inlet of the water-cooling water channel, and the water inlet pipe of the water-cooling circulation machine is connected to the water outlet of the water-cooling water channel.

[0049] In the embodiment of the present application, the heat generated by the light absorbing structure 12 can be continuously and efficiently removed by continuously circulating cooling water through a water-cooling circulation machine. The water-cooling waterway cover plate 13 is a key component connecting the water-cooling circulation machine and the water-cooling waterway channel, ensuring that the cooling water can flow in and out smoothly, thereby greatly improving the heat dissipation efficiency. The water-cooling circulation machine, the water-cooling waterway cover plate 13 and the water-cooling waterway channel together constitute a closed cooling circulation system. This design can effectively prevent external dust, impurities, etc. from entering the cooling waterway, keep the waterway clean, and thus improve the stability and reliability of the system.

[0050] In some optional embodiments, the heat dissipation device includes a fan. In the embodiment of the present application, the fan can quickly generate wind flow to effectively remove the heat on the heat dissipation device, thereby achieving an efficient heat dissipation effect. In addition, the cost of the fan heat dissipation device is relatively low. The fan itself has a simple structure, and the manufacturing and maintenance costs are low. At the same time, its efficient heat dissipation performance also enables the device to save energy during operation, further reducing costs.

[0051] In some optional embodiments, the imaging device includes a camera 1 , a pressing block 2 , and a reflecting mechanism; the lens of the camera 1 is detachably connected to the reflecting mechanism via the pressing block 2 .

[0052] In the embodiment of the present application, the imaging device includes a camera 1, a clamping block 2 and a reflection mechanism. The imaging light reflected by the beam combiner 16 reaches the camera 1 after passing through the reflector 6, so that the visual detection optical path is independent of the processing laser optical path. In addition, the imaging device is vertically arranged to utilize the space in the z-axis direction, so that the space occupancy of the entire device is more reasonable.

[0053] In some optional implementations, the pressing block 2 is sleeved on the lens of the camera 1 ; a plurality of fixing screws are evenly arranged on the edge of the pressing block 2 , and the pressing block 2 is mounted on the reflection mechanism through the plurality of fixing screws.

[0054] In the embodiment of the present application, the clamping block 2 is a ring that is mounted on the lens of the camera 1. A plurality of fixing screws are evenly arranged on the edge of the clamping block 2. For example, a fixing screw is arranged every 90 degrees on the clamping block 2, and a total of four fixing screws are arranged. The clamping block 2 is mounted on the reflection mechanism through these fixing screws, and the clamping block 2 is mounted on the camera 1, thereby realizing the connection between the camera 1 and the reflection mechanism.

[0055] Furthermore, it also includes a fixed top screw 4, which acts on the camera 1 lens to fix the rotation angle of the camera 1 lens around its axis to prevent the camera 1 lens from rotating during use. The fixed top screw 4 is a fastener, usually used between the shaft and the sleeve to prevent the shaft and the sleeve from changing position during use. Its working principle is mainly based on the fastening principle of screws. The fixed top screw 4 is mainly used for the shaft hole, and by holding the shaft, it cannot move back and forth, thereby playing a positioning role.

[0056] This embodiment can realize the field of view rotation adjustment, and the specific adjustment method is: loosen all the fixing screws on the clamping block 2, and loosen the fixed top screw 4, then rotate a certain angle around the central axis of the camera to achieve the desired field of view direction. After adjusting the field of view direction, keep the camera still, lock all the fixing screws on the clamping block 2, and tighten the fixed top screw 4 to complete the field of view direction adjustment.

[0057] In some optional embodiments, the reflection mechanism includes: a reflector housing 3, a reflector 6, a reflector pad 7, a corrugated spring pad 8 and a reflector cover plate 9;

[0058] The reflector housing 3 and the reflector cover plate 9 surround the reflector 6, the reflector pad 7 and the corrugated spring pad 8;

[0059] The reflector 6 is placed on the reflector pad 7 , and the back of the reflector 6 is in contact with the reflector pad 7 ; the reflector pad 7 is in contact with the reflector cover plate 9 through the corrugated spring pad 8 .

[0060] In the embodiment of the present application, the reflector 6 is placed on the reflector pad 7, and the position of the reflector 6 can be adjusted by moving the reflector 6 on the reflector pad 7. The corrugated spring pad 8 provides a buffer and a pressing effect between the reflector pad 7 and the reflector cover 9. After the reflector cover 9 is installed, the corrugated spring pad 8 is used to press the reflector 6 on the reflector pad 7 to prevent the reflector 6 from sliding on the reflector pad 7 during the processing. The reflector housing 3 and the reflector cover 9 tightly surround the reflector 6, the reflector pad 7 and the corrugated spring pad 8 to form a solid structure. This design can effectively prevent the reflector 6 from being affected by external vibration or impact during the laser processing process, and ensure the stability and accuracy of the reflector 6.

[0061] In some optional embodiments, the reflection mechanism further includes: a steel ball 5, a first adjusting ball screw 10 and a second adjusting ball screw 11;

[0062] The steel ball 5 serves as a fixed fulcrum and is in point contact with the reflector 6 , and the first adjusting ball screw 10 and the second adjusting ball screw 11 are both in point contact with different positions of the reflector 6 .

[0063] In the embodiment of the present application, a steel ball 5 is used to press against a point on the reflector 6, and the pitch and elevation angles of the reflector 6 are adjusted respectively by a first adjusting ball screw 10 and a second adjusting ball screw 11.

[0064] This embodiment can achieve field of view centering adjustment, and the specific adjustment method is: loosening or tightening the first adjustment ball screw 10 and the second adjustment ball screw 11 drives the angle deviation of the reflector 6 to achieve field of view centering.

[0065] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0066] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0067] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0068] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0069] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A laser processing visual imaging monitoring device, characterized in that: It includes an imaging device, a beam combining mechanism and a light absorbing device; The beam combining mechanism comprises a beam combining upper shell, a beam combining mirror and a beam combining lower shell; the beam combining mirror is arranged at a certain angle to the horizontal direction, and the beam combining upper shell and the beam combining lower shell surround the beam combining mirror; The top of the beam combining mechanism is used to inject laser light, and the laser light is reflected to one side of the beam combining mechanism by the mirror surface of the beam combining mirror. The light absorbing device is arranged on the same side of the beam combining mechanism, and the light absorbing device is used to absorb the light reflected by the beam combining mirror and perform heat dissipation; The imaging device is arranged on a side of the beam combining mechanism away from the light absorbing device.

2. The laser processing visual imaging monitoring device according to claim 1, characterized in that: The light absorbing device comprises a light absorbing structure and a heat dissipating device; The front side of the light absorbing structure is arranged close to the beam combining mirror, and the back side of the light absorbing structure is provided with the heat dissipation device.

3. The laser processing visual imaging monitoring device according to claim 2, characterized in that: The front side of the light absorbing structure includes a plurality of V-shaped grooves, and the angle of the V-shaped grooves is greater than 60 degrees and less than 120 degrees.

4. The laser processing visual imaging monitoring device according to claim 2, characterized in that: The heat dissipation device comprises a water-cooling water channel; the water-cooling water channel comprises a water inlet and a water outlet.

5. The laser processing visual imaging monitoring device according to claim 4, characterized in that: The light absorbing device also includes a water-cooling water channel cover plate, which is connected to the water inlet pipe and the water outlet pipe of the water-cooling circulation machine. The water outlet pipe of the water-cooling circulation machine is connected to the water inlet of the water-cooling water channel, and the water inlet pipe of the water-cooling circulation machine is connected to the water outlet of the water-cooling water channel.

6. The laser processing visual imaging monitoring device according to claim 2, characterized in that: The heat dissipation device includes a fan.

7. The laser processing visual imaging monitoring device according to claim 1, characterized in that: The imaging device comprises a camera, a pressing block and a reflecting mechanism; the lens of the camera is detachably connected to the reflecting mechanism via the pressing block.

8. The laser processing visual imaging monitoring device according to claim 7, characterized in that: The pressing block is sleeved on the lens of the camera; a plurality of fixing screws are evenly arranged on the edge of the pressing block, and the pressing block is installed on the reflecting mechanism through the plurality of fixing screws.

9. The laser processing visual imaging monitoring device according to claim 7, characterized in that: The reflecting mechanism comprises: a reflector housing, a reflector, a reflector pad, a corrugated spring pad and a reflector cover plate; The reflector housing and the reflector cover plate surround the reflector, the reflector pad and the corrugated spring pad; The reflector is placed on the reflector pad, and the back of the reflector is in contact with the reflector pad; the reflector pad is in contact with the reflector cover through the corrugated spring pad.

10. The laser processing visual imaging monitoring device according to claim 9, characterized in that: The reflection mechanism also includes: a steel ball, a first adjusting ball screw and a second adjusting ball screw; The steel ball serves as a fixed fulcrum and is in point contact with the reflector, and the first adjusting ball screw and the second adjusting ball screw are both in point contact with different positions of the reflector.

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