A laser welding machine protective lens auxiliary operation device

Abstract

A kind of laser welding machine protective lens auxiliary operating device, including outer frame, the outer frame outer side sliding connection two sealing plates, two sealing plates are sealed to outer frame on the outside, outer frame inner side sliding connection moving frame, moving frame inner side sliding connection lens holder, spring is connected between moving frame and lens holder, outer frame lower portion connects clamping device, clamping device includes clamping seat, clamping seat interior sliding connection drive seat, clamping seat and drive seat are connected between connecting link and clamping plate, clamping plate controls the connection and disconnection of moving frame, lens holder and outer frame, the device laser welding machine auxiliary operating device, prevent pollutants from entering laser welding machine lens working cavity, ensure that the use and replacement process lens is clean, replace laser welding machine protective lens efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laser welding machine, especially to a kind of laser welding machine protective lens auxiliary operation device. BACKGROUND

[0002] Laser welding machine protective lens is the consumable of laser welding machine, and it needs to be replaced frequently during the use of laser welding machine, which not only affects the use efficiency of laser welding machine, but also increases the use cost of laser welding machine. The reason for replacing the laser welding machine protective lens is that the protective lens is contaminated and ablated by foreign matter during use. Therefore, the protective lens must be kept clean as much as possible during use and replacement. The existing replacement and use process of protective lens has the following problems: first, the use process is contaminated due to the unsealed lens mounting seat; second, during the replacement process of protective lens, contaminants enter the lens mounting seat; third, the replacement of protective lens is relatively inefficient, which not only affects the work efficiency, but also causes contaminants to enter the lens mounting part. SUMMARY

[0003] In view of the above problems in the prior art, the present application provides a kind of laser welding machine protective lens auxiliary operation device, which prevents contaminants from entering the lens working cavity of laser welding machine, ensures the cleanliness of protective lens during use and replacement, and improves the efficiency of replacing laser welding machine protective lens.

[0004] The purpose of the present application is achieved by the following technical solutions:

[0005] The utility model provides a kind of laser welding machine protective lens auxiliary operation device, including outer frame, two sealing plates are slidably connected outside the outer frame, two sealing plates are sealed to the outer frame outside, the inner side of outer frame is slidably connected with moving frame, the inner side of moving frame is slidably connected with lens holder, spring is connected between moving frame and lens holder, the lower portion of outer frame is connected with clamping device, clamping device includes clamping seat, driving seat is slidably connected inside clamping seat, connecting link and clamping plate are connected between clamping seat and driving seat, clamping plate controls the connection and disconnection of moving frame, lens holder and outer frame.The outer frame is the box-like structure of side and upper portion opening, outer frame upper portion is equipped with two support plates that are left and right symmetrical, the middle of each side support plate is equipped with middle groove, the front and rear of each side support plate is equipped with symmetrical side groove, side groove is divided into inclined groove and straight groove, the middle of front and rear of outer frame is equipped with spring plate, the inner side of each side support plate is equipped with sealing plate, sealing plate is right angle structure, the lower portion of each side sealing plate is slidably connected with corresponding side groove respectively by sealing plate pin, the outer side of each sealing plate is slidably connected with corresponding middle groove by guide strip, the front and rear of each sealing plate and outer frame is equipped with No.

[0006] The rear side of driving seat is equipped with rear seat, the middle of rear seat is equipped with rear seat groove, the side of rear seat is equipped with inclined waist groove, the upper portion of waist groove is inclined to the side of clamping seat by a certain angle, clamping plate is C-shaped structure, one side of clamping plate is equipped with hook, the other side of clamping plate is equipped with clamping plate pin shaft, the inflection point of one side of clamping plate pin shaft is equipped with clamping plate hinge pin, rear seat passes through the bottom groove of clamping seat, driving seat is placed in rear seat groove, clamping plate hinge pin is hinged with hinge seat, clamping plate pin shaft is slidably connected with waist groove.

[0007] Beneficial effects: When the device is not installed with protective lenses, the sealing plates on both sides will block the opening at the upper part of the frame under the action of the second spring, preventing pollutants from entering the inside of the frame. After the moving frame and the lens seat are installed, the step block at the lower part of the moving frame and the opening of the limiting plate form a seal, the sealing plate resets under the action of the second spring, and the sealing plate blocks the moving frame on the outside, further forming a seal, effectively preventing pollutants from entering the limiting plate during work, ensuring the cleanliness of the inside of the frame, preventing pollutants from polluting the lenses and causing damage to the lenses, and the clamping device and the moving frame and the lens seat cooperate with each other, so that the moving frame can be simply pushed and pressed when the moving frame and the lens seat are installed and disassembled, improving the efficiency of replacing the protective lenses of the laser welding machine. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 The auxiliary operation device structure diagram of the protective lens of the laser welding machine is described in the application.

[0009] Figure 2 The structure diagram when installing protective lenses is described in the application.

[0010] Figure 3 The internal structure diagram of the auxiliary operation device structure diagram of the protective lens of the laser welding machine is described in the application.

[0011] Figure 4 The internal structure diagram when installing protective lenses is described in the application.

[0012] Figure 5 The structure diagram when the clamping device 200 and the moving frame 130 are connected is described in the application.

[0013] Figure 6 The structure diagram when the clamping device 200 and the moving frame 130 are disconnected is described in the application.

[0014] Figure 7 The structure diagram of the frame is described in the application.

[0015] Figure 8 The structure diagram of the sealing plate is described in the application.

[0016] Figure 9 The structure diagram of the moving frame is described in the application.

[0017] Figure 10 The structure diagram of the lens seat is described in the application.

[0018] Figure 11 The rear side structure diagram of the lens seat is described in the application.

[0019] Figure 12 The structure diagram when the clamping device works is described in the application.

[0020] Figure 13 The structure diagram of the clamping device of the present application.

[0021] Figure 14 The structure diagram of the clamping device of the present application.

[0022] Figure 15 The structure diagram of the clamping device of the present application.

[0023] Figure 16 The structure diagram of the clamping device of the present application.

[0024] Figure 17 The structure diagram of the clamping device of the present application.

[0025] Figure 18 The structure diagram of the clamping device of the present application.

[0026] Figure 19 The structure diagram of the clamping device of the present application.

[0027] Figure 20 The structure diagram of the clamping device of the present application.

[0028] Figure 21 The structure diagram of the clamping device of the present application.

[0029] Figure 22 The structure diagram of the clamping device of the present application.

[0030] Figure 23 The structure diagram of the clamping device of the present application.

[0031] Figure 24 The structure diagram of the clamping device of the present application.

[0032] In the figure: 110, outer frame; 111, limiting plate; 112, limiting plate slot; 113, support plate; 114, middle slot; 115, side slot; 116, inclined slot; 117, straight slot; 118, spring plate; 120, sealing plate; 121, guide bar; 122, sealing plate pin; 130, moving frame; 131, step block; 132, guide shaft; 133, frame; 134, top plate; 150, lens seat; 151, lens seat guide hole; 152, lens seat slot; 153, through hole; 154, counterbore; 155, clamping plate; 160, No. 1 spring; 170, No. 2 spring; 180, cover plate; 190, nut; 200, clamping device; 210, clamping seat; 211, inner cavity; 212, bottom slot; 213, hinge seat; 214, clamping seat hole; 215, clamping seat spring pin; 216, hinge hole; 220, drive seat; 221, drive seat pin; 222, rear seat; 223, rear seat slot; 224, waist slot; 225, drive seat spring pin; 226, drive slot; 2261, No. 1 slot; 2262, No. 2 slot; 2263, No. 3 slot; 2264, No. 4 slot; 2265, No. 5 slot; 2266, No. 6 slot; 2267, No. 1 inflection point; 2268, No. 2 inflection point; 2269, No. 3 inflection point; 230, connecting rod; 231, connecting rod hinge pin; 232, connecting rod pin shaft; 240, clamping plate; 241, clamping hook; 242, clamping plate pin shaft; 243, clamping plate hinge pin; 250, No. 3 spring. DETAILED DESCRIPTION

[0033] The application will be further described in detail below with reference to the accompanying drawings and embodiments:

[0034] Reference Figures 1 to 6 A laser welding machine protective lens auxiliary operation device, comprising an outer frame 110, the outer frame 110 is slidably connected with two sealing plates 120 outside, the two sealing plates 120 form a seal outside the outer frame 110, the inner side of the outer frame 110 is slidably connected with a moving frame 130, the inner side of the moving frame 130 is slidably connected with a lens seat 150, springs are connected between the moving frame 130 and the lens seat 150, a clamping device 200 is connected to the lower part of the outer frame 110, the clamping device 200 comprises a clamping seat 210, the clamping seat 210 is slidably connected with a drive seat 220 inside, the clamping seat 210 and the drive seat 220 are connected with a connecting rod 230 and a clamping plate 240, the clamping plate 240 controls the connection and disconnection of the moving frame 130, the lens seat 150 and the outer frame 110.

[0035] Reference Figures 7 to 8The outer frame 110 is a box-shaped structure with open sides and upper part, and the upper part of the outer frame 110 is provided with two symmetrical support plates 113, the middle of each side of the support plate 113 is provided with a middle groove 114, and the front and rear sides of each side of the support plate 113 are provided with symmetrical side grooves 115, the side grooves 115 are divided into inclined grooves 116 and straight grooves 117, the middle of the front and rear sides of the outer frame 110 is provided with spring plates 118, the inner side of each side of the support plate 113 is provided with sealing plates 120, the sealing plates 120 are right-angled structures, the lower sides of each sealing plate 120 are provided with sealing plate pins 122 which are respectively connected to the corresponding side grooves 115, the outer sides of each sealing plate 120 are provided with guide strips 121 which are respectively connected to the corresponding middle grooves 114, the front and rear sides of each sealing plate 120 and the outer frame 110 are provided with No. 2 springs 170, the two sides of the No. 2 springs 170 are respectively connected to the corresponding spring plates 118 and sealing plate pins 122, and the side openings of the outer frame 110 are fixedly connected with cover plates 180. The sealing plates 120 are made of rubber, plastic elastic material to ensure sealing. The two sealing plates 120 close and open the upper part of the outer frame 110 under the action of the side grooves 115, when the two sealing plates 120 are at the lower part of the straight grooves 117, the two sealing plates 120 close the upper part of the outer frame 110, when the sealing plates 120 slide to the upper part of the inclined grooves 116, the sealing plates 120 are opened in the middle to provide a passage for the movement of the moving frame 130 and the lens seat 150, the No. 2 springs 170 can ensure that the two sealing plates 120 are always closed, no matter whether there is a moving frame 130 and a lens seat 150 in the outer frame 110, the two sealing plates 120 close the upper part of the outer frame 110, which ensures that pollutants cannot enter the inside of the outer frame 110 in the working state, and ensures that pollutants cannot enter the inside of the outer frame 110 when the protective lens is replaced, which ensures the cleanliness of the inside of the outer frame 110 and prevents the lens from being damaged by pollutants. The device 200, the moving frame 130 and the lens seat 150 cooperate with each other, so that when the moving frame 130 and the lens seat 150 are installed and removed, it is only necessary to push the moving frame 130, which improves the efficiency of replacing the protective lens of the laser welding machine.

[0036] Reference Figure 7 , Figures 9 to 11The lower part of the moving frame 130 is provided with a step block 131, the lower end surface of the step block 131 is provided with two symmetrical guide shafts 132, the lower part of the moving frame 130 is provided with a rectangular frame 133, the end surface is provided with two symmetrical lens seat guide holes 151, the two sides of the lens seat 150 are provided with two symmetrical lens seat grooves 152, the two lens seat guide holes 151 of the lens seat 150 pass through the two guide shafts 132 from the lower part, the lens seat guide hole 151 is slidably connected with the guide shaft 132, the lower part of the guide shaft 132 is connected with a nut 190, two first springs 160 are arranged between the moving frame 130 and the lens seat 150, the first spring 160 is sleeved outside the guide shaft 132, the upper and lower sides of the first spring 160 abut against the moving frame 130 and the lens seat 150 respectively, the two sides of the frame 133 pass through the lens seat grooves 152 on the two sides of the lens seat 150, and the lens seat 150 is slidably connected with the inner side of the outer frame 110.

[0037] With reference to Figure 7 , Figures 9 to 11 The middle of the limiting plate 111 is provided with a limiting plate groove 112, the two sides of the frame 133 pass through the limiting plate groove 112, and the lowermost position of the lens seat 150 is positioned on the limiting plate 111. The step block 131 is made of rubber, plastic elastic material, so as to ensure the sealing property. The cover plate 180 and the inner side of the outer frame 110 form a rectangular space, the step block 131 is connected with the rectangular space formed by the cover plate 180 and the outer frame 110, a seal is formed between the step block 131 and the outer frame 110, so that when the device works, the working cavity of the protective lens is further prevented from being polluted.

[0038] With reference to Figures 12 to 24 The clamping seat 210 is a box-shaped structure with an open side, the bottom of the cavity of the clamping seat 210 is provided with a bottom groove 212, the rear side of the bottom groove 212 is provided with a hinge seat 213, the lower part of the cavity of the clamping seat 210 is provided with a clamping seat spring pin 215, the upper part of the cavity of the clamping seat 210 is provided with a clamping seat hole 214, the upper part of the driving seat 220 is provided with a driving seat pin 221, the lower part of the driving seat 220 is provided with a driving seat spring pin 225, the driving seat 220 is slidably connected with the cavity of the clamping seat 210, the driving seat pin 221 is slidably connected with the clamping seat hole 214, and the third spring 250 is arranged between the driving seat 220 and the clamping seat 210. The upper and lower sides of the third spring 250 are fixedly connected with the clamping seat spring pin 215 and the driving seat spring pin 225 respectively.

[0039] With reference to Figures 12 to 24The rear side of the driving seat 220 is provided with a rear seat 222, the middle of the rear seat 222 is provided with a rear seat groove 223, the side of the rear seat 222 is provided with an inclined waist groove 224, the upper part of the waist groove 224 is inclined to one side of the clamping seat 210 by a certain angle, the clamping plate 240 is a C-shaped structure, one side of the clamping plate 240 is provided with a clamping hook 241, the other side of the clamping plate 240 is provided with a clamping plate pin shaft 242, the inflection point of one side of the clamping plate pin shaft 242 is provided with a clamping plate hinge pin 243, the rear seat 222 passes through the bottom groove 212 of the clamping seat 210, the driving seat 220 is placed in the rear seat groove 223, the clamping plate hinge pin 243 is hinged to the hinge seat 213, and the clamping plate pin shaft 242 is slidingly connected to the waist groove 224.

[0040] With reference to Figures 12 to 24 The end surface of the driving seat 220 is provided with a driving groove 226, the driving groove 226 is a rhombus mechanism with a recess in the upper part, the edges of the driving groove 226 are a first groove 2261, a second groove 2262, a third groove 2263, a fourth groove 2264, a fifth groove 2265, and a sixth groove 2266, the connection between the fourth groove 2264 and the fifth groove 2265 forms a recess and a first inflection point 2267 and a second inflection point 2268, the first inflection point 2267 and the second inflection point 2268 are staggered in the up-down direction, the first groove 2261 and the second groove 2262 form a third inflection point 2269, a connecting rod 230 is arranged between the driving seat 220 and the clamping seat 210, the connecting rod hinge pin 231 at the lower part of the connecting rod 230 is hinged to the hinge hole 216 of the lower end surface of the clamping seat 210, and the connecting rod pin shaft 232 at the upper part of the connecting rod 230 is slidingly connected to the driving groove 226.

[0041] With reference to Figures 1 to 6 The driving seat pin 221 at the upper part of the driving seat 220 is connected with the top plate 134 at the lower part of the frame 133, and the clamping hook 241 at one side of the clamping plate 240 is connected with the lower part of the frame 133.

[0042] The method for using the auxiliary device for the laser welding machine protective lens, the driving seat 220 has a tendency to move upward under the action of the third spring 250, when the moving frame 130 and the lens seat 150 are not installed, the connecting rod pin shaft 232 of the connecting rod 230 stops at the third inflection point 2269, at this time the driving seat 220 is at the top of the clamping seat 210, the clamping hook 241 on the upper part of the clamping plate 240 is away from the clamping seat 210, when the moving frame 130 is pushed down in the inner cavity of the outer frame 110, the top plate 134 on the lower part of the moving frame 130 contacts the upper end surface of the driving seat pin 221, the driving seat 220 is pushed to move downward, the third spring 250 is compressed, and at the same time the first spring 160 between the moving frame 130 and the lens seat 150 is compressed, when the top plate 134 on the lower part of the frame 133 contacts the upper end surface of the driving seat pin 221, the driving seat 220 is pushed downward, the connecting rod pin shaft 232 slides from the third inflection point 2269 along one side of the driving groove 226, when the connecting rod pin shaft 232 slides to the inflection point of the third groove 2263 and the fourth groove 2264 or the inflection point of the sixth groove 2266 and the fifth groove 2265, the moving frame 130 is blocked, at this time the moving frame 130 is loosened, the driving seat 220 moves upward under the action of the third spring 250, the connecting rod pin shaft 232 stops at the second inflection point 2268, at this time the driving seat 220 is stably stopped at the current position, when the moving frame 130 and the driving seat 220 move downward, the inclined waist groove 224 drives the clamping plate 240 to rotate, when the lower part of the frame 133 passes the clamping hook 241, the clamping hook 241 continues to rotate, the clamping hook 241 will pass the inner side of the frame 133, when the position of the driving seat 220 is stable, the clamping hook 241 hooks the lower part of the frame 133, at this time the position of the moving frame 130 is fixed, under the action of the first spring 160, the lens seat 150 is positioned on the limiting plate 111 on both sides, the moving frame 130 and the lens seat 150 are installed, when the moving frame 130 and the lens seat 150 need to be disassembled, the moving frame 130 is pressed downward, because the first inflection point 2267 and the second inflection point 2268 are staggered with each other, the guide shaft 132 slides along the fifth groove 2265, when the connecting rod pin shaft 232 slides to the inflection point of the fifth groove 2265 and the sixth groove 2266, the moving frame 130 is loosened, the driving seat 220 moves upward under the action of the third spring 250, at this time the connecting rod pin shaft 232 slides along the sixth groove 2266 and the first groove 2261 to the third inflection point 2269, the driving seat 220 moves upward, the clamping hook 241 is disengaged from the moving frame 130, the moving frame 130 and the lens seat 150 are ejected under the action of the driving seat 220, the diamond-shaped driving groove 226 ensures that the connecting rod pin shaft 232 can smoothly ascend and descend without being blocked. The clamping device 200 cooperates with the moving frame 130 and the lens seat 150, so that when the moving frame 130 and the lens seat 150 are installed and disassembled, it is only necessary to simply push and press the moving frame 130, thereby improving the efficiency of replacing the laser welding machine protective lens.

[0043] When the device is not installed with the protective lens, the sealing plates 120 on both sides will block the opening at the upper part of the outer frame 110 under the action of the second spring 170, preventing contaminants from entering the inside of the outer frame 110. When the protective lens is installed, first lift the sealing plates 120 upwards. After the sealing plates 120 are lifted, an opening is formed in the middle of the sealing plates 120 on both sides. Insert the moving frame 130 and the lens seat 150 from the opening formed in the middle of the sealing plates 120 and the opening at the upper part of the limiting plate 111, and press them downwards. When the moving frame 130 is blocked, release the moving frame 130. The moving frame 130 will move a certain distance upwards and stabilize at the current position. The moving frame 130 is hooked by the hook 241. The lower part of the lens seat 150 is positioned on the limiting plate 111 under the action of the first spring 160, ensuring the working position of the lens seat 150. The step block 131 at the lower part of the moving frame 130 and the opening at the limiting plate 111 form a seal. The sealing plates 120 are reset under the action of the second spring 170. The sealing plates 120 block the moving frame 130 on the outside, further forming a seal, effectively preventing contaminants from entering the limiting plate 111 during work. When disassembling the moving frame 130 and the lens seat 150, press the sealing plates 120 downwards on the outside. The sealing plates 120 move the moving frame 130 and the lens seat 150 downwards. When the moving frame 130 is blocked, release the sealing plates 120. The moving frame 130 will be ejected. The moving frame 130 and the lens seat 150 can be directly pulled out. After the moving frame 130 and the lens seat 150 are pulled out, the sealing plates 120 again close the outlet of the limiting plate 111.

[0044] When the device is not installed with the protective lens, the sealing plates 120 on both sides will block the opening at the upper part of the outer frame 110 under the action of the second spring 170, preventing contaminants from entering the inside of the outer frame 110. When the protective lens is installed, first lift the sealing plates 120 upwards. After the sealing plates 120 are lifted, an opening is formed in the middle of the sealing plates 120 on both sides. Insert the moving frame 130 and the lens seat 150 from the opening formed in the middle of the sealing plates 120 and the opening at the upper part of the limiting plate 111, and press them downwards. When the moving frame 130 is blocked, release the moving frame 130. The moving frame 130 will move a certain distance upwards and stabilize at the current position. The moving frame 130 is hooked by the hook 241. The lower part of the lens seat 150 is positioned on the limiting plate 111 under the action of the first spring 160, ensuring the working position of the lens seat 150. The step block 131 at the lower part of the moving frame 130 and the opening at the limiting plate 111 form a seal. The sealing plates 120 are reset under the action of the second spring 170. The sealing plates 120 block the moving frame 130 on the outside, further forming a seal, effectively preventing contaminants from entering the limiting plate 111 during work. When disassembling the moving frame 130 and the lens seat 150, press the sealing plates 120 downwards on the outside. The sealing plates 120 move the moving frame 130 and the lens seat 150 downwards. When the moving frame 130 is blocked, release the sealing plates 120. The moving frame 130 will be ejected. The moving frame 130 and the lens seat 150 can be directly pulled out. After the moving frame 130 and the lens seat 150 are pulled out, the sealing plates 120 again close the outlet of the limiting plate 111.

Claims

1. An auxiliary operating device for a protective lens of a laser welding machine, characterized in that: The device includes an outer frame (110), with two sealing plates (120) slidably connected to the outer side of the outer frame (110), forming a seal between the two sealing plates (120) and the outer frame (110). A movable frame (130) is slidably connected to the inner side of the outer frame (110), and a lens mount (150) is slidably connected to the inner side of the movable frame (130). A spring connects the movable frame (130) and the lens mount (150). A snap-fit ​​device (200) is connected to the lower part of the outer frame (110). The snap-fit ​​device (200) includes a snap-fit ​​seat (210), with a drive seat (220) slidably connected inside the snap-fit ​​seat (210). A connecting rod (230) and a snap-fit ​​plate (240) connect the snap-fit ​​seat (210) and the drive seat (220). The snap-fit ​​plate (240) controls the movement of the lens mount. The connection and disconnection of the moving frame (130), lens mount (150) and outer frame (110); the upper part of the outer frame (110) is provided with two symmetrical support plates (113), each support plate (113) has a central groove (114) in the middle, and each support plate (113) has symmetrical side grooves (115) on the front and rear sides. The side grooves (115) are divided into inclined grooves (116) and straight grooves (117). The middle of the front and rear sides of the outer frame (110) is provided with spring plates (118). The inner side of each support plate (113) is provided with sealing plates (120). The sealing plate pins (122) on both sides of the lower part of each sealing plate (120) are slidably connected to the corresponding side grooves (115). The guide strips (121) on the outer side of each sealing plate (120) are provided. The sliding connection corresponds to the middle groove (114). A second spring (170) is provided between the front and rear sides of each sealing plate (120) and the outer frame (110). The two sides of the second spring (170) are respectively connected to the corresponding spring plate (118) and the sealing plate pin (122). The cover plate (180) is fixedly connected to the side opening of the outer frame (110). The lower part of the movable frame (130) is provided with a step block (131). The lower end face of the step block (131) is provided with two symmetrical guide shafts (132). The lower part of the movable frame (130) is provided with a rectangular frame (133). The end face is provided with two symmetrical lens mount guide holes (151). The two sides of the lens mount (150) are provided with two symmetrical lens mount grooves (152). The lens mount guide hole (151) passes through two guide shafts (132) from the bottom. The lens mount guide hole (151) is slidably connected to the guide shafts (132). The lower part of the guide shafts (132) is connected to the nut (190). Two No. 1 springs (160) are provided between the moving frame (130) and the lens mount (150). The No. 1 spring (160) is sleeved on the outside of the guide shaft (132). The upper and lower sides of the No. 1 spring (160) abut against the moving frame (130) and the lens mount (150) respectively. The frame (133) passes through the lens mount grooves (152) on both sides of the lens mount (150). The lens mount (150) is slidably connected to the inner side of the outer frame (110). The step block 131 at the bottom of the moving frame 130 and the opening of the outer frame 110 form a seal.The outer frame (110) is provided with a limiting plate (111), and the limiting plate (111) has a limiting plate groove (112) in the middle. The frame (133) passes through the limiting plate groove (112) on both sides, and the lens mount (150) is positioned on the limiting plate (111). The snap-fit ​​seat (210) is a box-shaped structure with a side opening. The bottom of the cavity of the snap-fit ​​seat (210) is provided with a bottom groove (212), and a hinge seat (213) is provided on the rear side of the bottom groove (212). The lower part of the cavity of the snap-fit ​​seat (210) is provided with a snap-fit ​​seat spring pin (215). The upper part of the cavity is provided with a snap-fit ​​seat hole (214), the upper part of the drive seat (220) is provided with a drive seat pin (221), the lower part of the drive seat (220) is provided with a drive seat spring pin (225), the drive seat (220) slides to connect the frame snap-fit ​​seat (210) cavity, the drive seat pin (221) slides to connect the snap-fit ​​seat hole (214), a No. 3 spring (250) is provided between the drive seat (220) and the snap-fit ​​seat (210), and the upper and lower sides of the No. 3 spring (250) are respectively fixed to the snap-fit ​​seat spring pin (215) and the drive seat spring pin (225); The drive seat (220) has a rear seat (222) on its rear side. The rear seat (222) has a rear seat groove (223) in the middle. The side of the rear seat (222) has an inclined waist groove (224). The upper part of the waist groove (224) is inclined towards the snap-fit ​​seat (210). The snap-fit ​​plate (240) has a C-shaped structure. The snap-fit ​​plate (240) has a snap hook (241) on one side and a snap-fit ​​plate pin (242) on the other side. A snap-fit ​​plate hinge pin (243) is provided at the inflection point on one side of the snap-fit ​​plate pin (242). The rear seat (222) passes through the bottom groove (212) of the snap-fit ​​seat (210). The drive seat (220) is placed in the rear seat groove (223). The snap-fit ​​plate hinge pin (243) The hinge seat (213) and the snap-fit ​​pin (242) are slidably connected to the waist groove (224); the end face of the drive seat (220) is provided with a drive groove (226), which is a diamond-shaped mechanism with a recess in the upper part. The sides of the drive groove (226) are groove 1 (2261), groove 2 (2262), groove 3 (2263), groove 4 (2264), groove 5 (2265), and groove 6 (2266) in sequence. A recess is formed at the connection between groove 4 (2264) and groove 5 (2265), forming inflection point 1 (2267) and inflection point 2 (2268). Inflection point 1 (2267) and inflection point 2 (2268) are staggered in the vertical direction.

2. The auxiliary operating device for protective lenses of a laser welding machine according to claim 1, characterized in that: The first slot (2261) and the second slot (2262) form the third inflection point (2269). A connecting rod (230) is provided between the drive seat (220) and the snap-fit ​​seat (210). The connecting rod pin (231) at the lower part of the connecting rod (230) is hinged to the hinge hole (216) at the lower end face of the snap-fit ​​seat (210). The connecting rod pin (232) at the upper part of the connecting rod (230) is slidably connected to the drive slot (226).

3. The auxiliary operating device for protective lenses of a laser welding machine according to claim 1, characterized in that: The drive seat pin (221) on the upper part of the drive seat (220) is connected to the top plate (134) on the lower part of the frame (133), and the hook (241) on one side of the snap plate (240) is connected to the lower part of the frame (133).

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