Welding and laser scanning alternating line connecting device

Abstract

The invention discloses a welding and laser scanning alternate line connecting device, and relates to the technical field of welding and laser scanning alternate line connecting. The device comprises a device fixing bottom plate, a first air cylinder support is arranged at the top of the device fixing bottom plate, a left feeding rodless air cylinder is arranged on the side face of the first air cylinder support, and a first connecting plate is fixedly connected to the top of the left feeding rodless air cylinder. Through the arrangement of the device fixing bottom plate, the first air cylinder support and the left feeding rodless air cylinder, the left feeding rodless air cylinder can drive the first connecting plate and follow-up components to stably and horizontally move, then the precise feeding action of the product left positioning tool is achieved, basic power support is provided for circulation of products in the device, and the production efficiency is improved. The stability and reliability of the whole feeding process are guaranteed, and the alternate translation function of the product right positioning tool and the product left positioning tool is achieved through cooperative work of the right feeding rodless air cylinder and the left feeding rodless air cylinder.

Description

Technical Field

[0001] This invention relates to the field of alternating welding and laser scanning technology, specifically to a welding and laser scanning alternating connection device. Background Technology

[0002] The existing method for removing surface oxide layers using laser scanning involves transferring materials to the laser scanning process after welding, followed by manual loading, laser scanning of the oxide layer, and manual unloading. Alternatively, product positioning fixtures can be used to position the product, and laser scanning equipment can be used to remove the surface oxide layer.

[0003] The existing production process involves waste due to multiple product handling and placement actions, logistics waste, and personnel waste. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a welding and laser scanning alternating connection device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding and laser scanning alternating connection device, comprising a device fixing base plate, a cylinder bracket 1 disposed on the top of the device fixing base plate, a left feeding rodless cylinder disposed on the side of the cylinder bracket 1, a connecting plate 1 fixedly connected to the top of the left feeding rodless cylinder, a lifting cylinder 1 disposed on the side of the connecting plate 1, a connecting plate 2 fixedly connected to the top of the lifting cylinder 1, a product left positioning fixture fixedly connected to the side of the connecting plate 2, a product disposed on the top of the product left positioning fixture, a cylinder bracket 2 disposed on the top of the device fixing base plate, a right feeding rodless cylinder disposed on the side of the cylinder bracket 2, and the right feeding rodless cylinder... A connecting plate three is fixedly connected to the top. A transition plate is provided on the side of the connecting plate three. A product right positioning fixture is provided on the top of the transition plate. A material feeding base plate is provided on the top of the device fixing base plate. A fixing bracket is fixedly connected to the top of the material feeding base plate. A rodless material feeding cylinder is provided on the side of the fixing bracket. A connecting plate four is fixedly connected to the side of the material feeding cylinder. A lifting cylinder two is provided on the side of the connecting plate four. A connecting plate five is fixedly connected to the bottom of the lifting cylinder two. A gripper cylinder is provided on the side of the connecting plate five. A connecting plate six is ​​fixedly connected to the bottom of the gripper cylinder. A contour gripper is provided on the side of the connecting plate six. A main control box and a solenoid valve manifold are provided on the side of the device fixing base plate.

[0006] According to the above technical solution, the main control box is electrically connected to the left feeding rodless cylinder, the right feeding rodless cylinder, the unloading rodless cylinder, the lifting cylinder one, the lifting cylinder two, and the gripper cylinder. The left feeding rodless cylinder and the right feeding rodless cylinder can alternately operate according to a preset program to achieve precise transfer of the product between the product left positioning fixture and the product right positioning fixture.

[0007] According to the above technical solution, the air circuits of the left feeding rodless cylinder and the right feeding rodless cylinder are interlocked. The left positioning fixture and the right positioning fixture are configured to move alternately. The two positioning fixtures will not move at the same time, thereby avoiding the problem of collision or inaccurate positioning of the product during the transfer process, and improving the operational stability of the whole device and the precision of product processing.

[0008] According to the above technical solution, the top of the product left positioning fixture and the product right positioning fixture are provided with six product receiving slots. The design of six product receiving slots can simultaneously position and process multiple products, which greatly improves production efficiency and meets the needs of mass production.

[0009] According to the above technical solution, an auxiliary positioning device is provided on the top of the gripper cylinder. The auxiliary positioning device includes an auxiliary mounting plate, which is fixedly connected to the top of the gripper cylinder. An air pipe is slidably connected through the top of the auxiliary mounting plate. A nozzle is fixedly connected to one end of the air pipe, and an air guide pipe is fixedly connected to the other end of the air pipe away from the nozzle. A buffer plate is fixedly connected to the circumferential surface of the air pipe, and a spring is fixedly connected to the top of the buffer plate. An air inlet is fixedly connected to the other end of the air guide pipe away from the air pipe. This ensures the relative positional accuracy between the nozzle and the product, and positions the two outermost parts, thereby ensuring the stable clamping of the entire part.

[0010] According to the above technical solution, the end of the spring away from the buffer plate is fixedly connected to the bottom of the auxiliary mounting plate, and the top of the product is located on the displacement trajectory of the bottom of the nozzle. The elasticity of the spring can buffer the impact of the air tube when it is subjected to external force, ensure the stability of the nozzle during the positioning process, and avoid affecting the positioning accuracy due to vibration or external force interference.

[0011] According to the above technical solution, the number of air tubes, nozzles, buffer plates and springs is set to several, in pairs, and symmetrical to each other along the vertical central axis of the auxiliary mounting plate, which improves the stability and accuracy of clamping, and is especially suitable for products with more complex shapes or requiring multi-point positioning.

[0012] According to the above technical solution, a pre-cleaning device is provided on the top of the device's fixed base plate. The pre-cleaning device includes a negative pressure plate, which is fixedly connected to the top of the device's fixed base plate. A filter screen is snapped into the top of the negative pressure plate. An air jet seat is fixedly connected to the top of the device's fixed base plate. A universal nozzle is connected through and fixedly to the top of the air jet seat. An air suction pipe is connected through and fixedly to the circumference of the negative pressure plate. The pre-cleaning device sprays high-pressure gas through the universal nozzle to blow away dust, impurities, and other contaminants from the product surface. The negative pressure plate generates negative pressure through the air suction pipe, drawing the blown-down contaminants into the negative pressure plate. The filter screen filters the intake air to prevent contaminants from re-entering the working environment.

[0013] According to the above technical solution, an air inlet valve is provided on the side of the universal nozzle, and there are two universal nozzles and air jet seats, which are internally interconnected. The two universal nozzles can thoroughly clean the product surface from different angles, ensuring that all parts are effectively cleaned.

[0014] According to the above technical solution, the top of the filter screen is provided with a round hole, and the air outlet of the universal nozzle is located above the left positioning fixture of the product, so that the high-pressure gas sprayed by the universal nozzle can directly act on the product surface to achieve efficient purging, which can be manually adjusted.

[0015] This invention provides a device for alternating welding and laser scanning. It has the following advantages: (1) The present invention, through the setting of the device fixed base plate, cylinder bracket 1 and left feeding rodless cylinder, enables the left feeding rodless cylinder to drive the connecting plate 1 and subsequent components to move horizontally smoothly, thereby realizing the precise feeding action of the left positioning fixture of the product, providing basic power support for the flow of the product in the device. The cylinder bracket 1 provides a stable installation base for the left feeding rodless cylinder, ensuring that it will not shift or shake due to force during operation, thus ensuring the stability and reliability of the entire feeding process. Through the coordinated work of the right feeding rodless cylinder and the left feeding rodless cylinder, the alternating translation function of the right positioning fixture and the left positioning fixture of the product is realized.

[0016] (2) The present invention enables the auxiliary positioning device to play a key role when the gripper cylinder clamps the product. The auxiliary mounting plate serves as a basic support structure, providing a stable installation position for components such as the air pipe. The air pipe runs through and is slidably connected to the top of the auxiliary mounting plate. The nozzle connected to one end can accurately position the product. When the nozzle contacts the product, if it is impacted by an external force, the air pipe will move accordingly. At this time, the buffer plate on the circumference of the air pipe and the spring fixedly connected to the top of the buffer plate begin to play their role. The elastic deformation of the spring can buffer the external force and prevent the nozzle from deviating from the correct position due to vibration or external interference, thereby ensuring the relative positional accuracy between the nozzle and the product. This allows the gripper cylinder to clamp the product stably and accurately, which is mainly for products with complex shapes or requiring multi-point positioning.

[0017] (3) By setting up a pre-cleaning device, the present invention enables a comprehensive and efficient cleaning process for the product before welding and laser scanning. The negative pressure plate is fixed on the top of the device base plate, providing a stable negative pressure environment for the entire cleaning process. The filter screen attached to the top can effectively filter the intake air and prevent pollutants from re-entering the working environment, ensuring the cleanliness of the working environment. The jet seat fixedly connected to the top of the device base plate and the universal nozzle fixed through it can spray high-pressure gas from different angles to blow and clean the product surface in all directions, removing dust, impurities and other pollutants. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall side view structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the main control box of the present invention; Figure 5 This is a schematic diagram of the structure of the top of the fixed base plate of the device of the present invention; Figure 6 This is a schematic diagram of the auxiliary positioning device of the present invention; Figure 7 This is a schematic diagram of the early cleaning device of the present invention.

[0019] In the diagram: 1. Device base plate; 2. Cylinder bracket one; 3. Left feeding rodless cylinder; 4. Connecting plate one; 5. Lifting cylinder one; 6. Connecting plate two; 7. Left positioning fixture for the product; 8. Product; 9. Cylinder bracket two; 10. Right feeding rodless cylinder; 11. Contouring gripper; 12. Connecting plate six; 13. Gripper cylinder; 14. Connecting plate five; 15. Lifting cylinder two; 16. Solenoid valve manifold; 17. Connecting plate four; 18. Unloading rodless cylinder; 19. Fixed bracket; 20. Feeding base plate; 21. Connecting plate three; 22. Adapter plate; 23. Right positioning fixture for product; 24. Main control box; 25. Auxiliary positioning device; 251. Auxiliary mounting plate; 252. Air pipe; 253. Nozzle; 254. Air guide pipe; 255. Buffer plate; 256. Spring; 257. Air inlet; 26. Pre-cleaning device; 261. Negative pressure plate; 262. Filter screen; 263. Air jet seat; 264. Universal nozzle; 265. Suction pipe; 27. Air inlet valve. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Please see Figures 1-7 One embodiment of the present invention is as follows: A welding and laser scanning alternating connection device includes a device fixing base plate 1. A cylinder bracket 1 2 is provided on the top of the device fixing base plate 1. A left feeding rodless cylinder 3 is provided on the side of the cylinder bracket 1 2. A connecting plate 1 4 is fixedly connected to the top of the left feeding rodless cylinder 3. A lifting cylinder 1 5 is provided on the side of the connecting plate 1 4. A connecting plate 2 6 is fixedly connected to the top of the lifting cylinder 1 5. A product left positioning fixture 7 is fixedly connected to the side of the connecting plate 2 6. A product 8 is provided on the top of the product left positioning fixture 7. A cylinder bracket 2 9 is provided on the top of the device fixing base plate 1. A right feeding rodless cylinder 10 is provided on the side of the cylinder bracket 2 9. A connecting plate 3 21 is fixedly connected to the top of the right feeding rodless cylinder 10. A transition plate 22 is provided on the side of the device 1. A product right positioning fixture 23 is provided on the top of the transition plate 22. A feeding base plate 20 is provided on the top of the device fixing base plate 1. A fixed bracket 19 is fixedly connected to the top of the feeding base plate 20. A feeding rodless cylinder 18 is provided on the side of the fixed bracket 19. A connecting plate four 17 is fixedly connected to the side of the feeding rodless cylinder 18. A lifting cylinder two 15 is provided on the side of the connecting plate four 17. A connecting plate five 14 is fixedly connected to the bottom of the lifting cylinder two 15. A gripper cylinder 13 is provided on the side of the connecting plate five 14. A connecting plate six 12 is fixedly connected to the bottom of the gripper cylinder 13. A contour gripper 11 is provided on the side of the connecting plate six 12. A main control box 24 and a solenoid valve manifold 16 are provided on the side of the device fixing base plate 1.

[0022] The main control box 24 is electrically connected to the left feeding rodless cylinder 3, the right feeding rodless cylinder 10, the unloading rodless cylinder 18, the lifting cylinder 1 5, the lifting cylinder 2 15 and the gripper cylinder 13. The left feeding rodless cylinder 3 and the right feeding rodless cylinder 10 can alternately move according to a preset program to realize the precise transfer of product 8 between the product left positioning fixture 7 and the product right positioning fixture 23.

[0023] The air circuits of the left feeding rodless cylinder 3 and the right feeding rodless cylinder 10 are interlocked. The left positioning fixture 7 and the right positioning fixture 23 are designed to move alternately. The two positioning fixtures will not move at the same time, thereby avoiding the problem of collision or inaccurate positioning of product 8 during the transfer process, and improving the operational stability of the whole device and the precision of product processing.

[0024] The top of the left positioning fixture 7 and the right positioning fixture 23 are provided with six product receiving slots. The design of six product receiving slots can position and process multiple products at the same time, which greatly improves production efficiency and meets the needs of mass production.

[0025] In operation, the welding operator places six welded products 8 sequentially onto the left positioning fixture 7 and clicks the start button on the main control box 24. The device then begins operation. The lifting cylinder 5 extends, lowering the left positioning fixture 7 to a suitable height. Then, the slider of the left feeding rodless cylinder 3 moves, smoothly transporting the left positioning fixture 7 along with the six products 8 to the laser scanning station. Upon reaching the designated position, the lifting cylinder 5 retracts, raising the left positioning fixture 7 to a suitable height so that the laser scanning equipment can accurately scan the products 8. The welding operator then places the remaining six welded products 8 onto the right positioning fixture 23 and clicks the start button on the main control box 24. The slider of the right feeding rodless cylinder 10 moves, transporting the right positioning fixture 23 and the products 8 to the laser scanning station. Here, the air circuits of the left feeding rodless cylinder 3 and the right feeding rodless cylinder 10 form an interlocking mechanism, ensuring that the two positioning fixtures do not move simultaneously. This avoids potential collisions or inaccurate positioning of product 8 during transfer, greatly improving the stability of the entire device and the processing accuracy of product 8. After the laser scanning operation is completed, the unloading rodless cylinder 18 starts working, driving the contour gripper 11 to move to the laser scanning station. Then, the lifting cylinder 15 extends, allowing the gripper cylinder 13 to reach the appropriate height to clamp product 8. The contour gripper 11 firmly holds product 8, completing the gripping action of product 8. Afterward, the lifting cylinder 15 retracts, the unloading rodless cylinder 18 moves product 8 to the unloading position, and finally, the lifting cylinder 15 extends again, the gripper cylinder 13 releases, and product 8 is successfully unloaded. The entire process is executed cyclically. Through the coordinated operation of various components, efficient operation of alternating welding and laser scanning is achieved, meeting the needs of mass production.

[0026] Please see Figure 1-7 Based on the above embodiments, in another embodiment of the present invention, an auxiliary positioning device 25 is provided on the top of the gripper cylinder 13. The auxiliary positioning device 25 includes an auxiliary mounting plate 251, which is fixedly connected to the top of the gripper cylinder 13. An air pipe 252 is slidably connected through the top of the auxiliary mounting plate 251. A nozzle 253 is fixedly connected to one end of the air pipe 252. An air guide pipe 254 is fixedly connected to the other end of the air pipe 252 away from the nozzle 253. A buffer plate 255 is fixedly connected to the circumferential surface of the air pipe 252. A spring 256 is fixedly connected to the top of the buffer plate 255. An air inlet 257 is fixedly connected to the other end of the air guide pipe 254 away from the air pipe 252. This ensures the relative positional accuracy between the nozzle 253 and the product 8, and positions the two outermost parts, thereby ensuring the stable clamping of the entire part.

[0027] The end of the spring 256 away from the buffer plate 255 is fixedly connected to the bottom of the auxiliary mounting plate 251. The top of the product 8 is located on the displacement trajectory of the bottom of the nozzle 253. The elasticity of the spring 256 can buffer the impact of the air tube 252 when it is subjected to external force, ensure the stability of the nozzle 253 during the positioning process, and avoid affecting the positioning accuracy due to vibration or external force interference.

[0028] The number of air tubes 252, nozzles 253, buffer plates 255 and springs 256 is set in pairs and symmetrical to each other along the vertical central axis of the auxiliary mounting plate 251, which improves the stability and accuracy of clamping, and is especially suitable for products with more complex shapes or requiring multi-point positioning.

[0029] A pre-cleaning device 26 is installed on the top of the device base plate 1. The pre-cleaning device 26 includes a negative pressure plate 261, which is fixedly connected to the top of the device base plate 1. A filter screen 262 is snapped into the top of the negative pressure plate 261. An air jet seat 263 is fixedly connected to the top of the device base plate 1. A universal nozzle 264 is fixedly connected through the top of the air jet seat 263. An air suction pipe 265 is fixedly connected through the circumference of the negative pressure plate 261. The pre-cleaning device 26 sprays high-pressure gas through the universal nozzle 264 to blow and remove dust, impurities and other contaminants from the surface of the product 8. The negative pressure plate 261 generates negative pressure through the air suction pipe 265, which sucks the blown-down contaminants into the negative pressure plate 261. The filter screen 262 filters the sucked-in air to prevent contaminants from re-entering the working environment.

[0030] An air inlet valve 27 is provided on the side of the universal nozzle 264. There are two universal nozzles 264 and air jet seat 263, which are internally interconnected. The two universal nozzles 264 can thoroughly clean the surface of the product 8 from different angles, ensuring that all parts are effectively cleaned.

[0031] The filter screen 262 has a round hole at the top, and the air outlet of the universal nozzle 264 is located above the left positioning fixture 7 of the product, so that the high-pressure gas ejected by the universal nozzle 264 can directly act on the surface of the product 8 to achieve efficient purging. It can be manually adjusted.

[0032] In use, when the lifting cylinder 15 drives the contour gripper 11 to grasp the product 8 and prepare to place it at the corresponding workstation, the air pipe 252 in the auxiliary positioning device 25, under the elastic action of the spring 256, first drives the nozzle 253 to move to the appropriate position. When the lifting cylinder 15 descends, the nozzle 253 first contacts the top of the product 8. Utilizing the buffering effect of the spring 256, the nozzle 253 can tightly fit the surface of the product 8. At the same time, the air pipe 252 slides on the auxiliary mounting plate 251 to ensure the relative positional accuracy between the nozzle 253 and the product 8, thus performing preliminary positioning of the product 8. The contour gripper 11, driven by the lifting cylinder 15... The device continues to descend, accurately clamping product 8. At this point, the auxiliary positioning device 25 and the contour gripper 11 work together to stably clamp product 8 from multiple points, preventing the product from shaking or shifting during transfer. The product 8 to be cleaned is then placed on the left positioning fixture 7, and the air inlet valve 27 is opened. High-pressure gas enters the jet seat 263 through the air inlet valve 27 and is then ejected through the universal nozzle 264, powerfully blowing away dust, impurities, and other contaminants from the product surface. Simultaneously, the negative pressure plate 261 generates negative pressure through the suction pipe 265, rapidly drawing the blown-down contaminants into the negative pressure plate 261. The inhaled air is filtered through the filter screen 262, trapping contaminants on the filter screen while clean air is discharged, effectively preventing contaminants from re-entering the working environment. This ensures the continuous and efficient operation of the entire cleaning process, providing a clean product surface for subsequent alternating welding and laser scanning operations, ensuring processing quality.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding and laser scanning alternating connection device, comprising a device fixing base plate (1), characterized in that: The top of the device fixed base plate (1) is provided with a cylinder bracket 1 (2), the side of the cylinder bracket 1 (2) is provided with a left feeding rodless cylinder (3), the top of the left feeding rodless cylinder (3) is fixedly connected with a connecting plate 1 (4), the side of the connecting plate 1 (4) is provided with a lifting cylinder 1 (5), the top of the lifting cylinder 1 (5) is fixedly connected with a connecting plate 2 (6), the side of the connecting plate 2 (6) is fixedly connected with a product left positioning fixture (7), the top of the product left positioning fixture (7) is provided with a product (8), the top of the device fixed base plate (1) is provided with a cylinder bracket 2 (9), the side of the cylinder bracket 2 (9) is provided with a right feeding rodless cylinder (10), the top of the right feeding rodless cylinder (10) is fixedly connected with a connecting plate 3 (21), the side of the connecting plate 3 (21) is provided with a transition plate (22), the transition plate ( The top of the device is provided with a right positioning fixture (23). The top of the device is provided with a feeding base plate (20). The top of the feeding base plate (20) is fixedly connected with a fixed bracket (19). The side of the fixed bracket (19) is provided with a feeding rodless cylinder (18). The side of the feeding rodless cylinder (18) is fixedly connected with a connecting plate four (17). The side of the connecting plate four (17) is provided with a lifting cylinder two (15). The bottom of the lifting cylinder two (15) is fixedly connected with a connecting plate five (14). The side of the connecting plate five (14) is provided with a gripper cylinder (13). The bottom of the gripper cylinder (13) is fixedly connected with a connecting plate six (12). The side of the connecting plate six (12) is provided with a contour gripper (11). The side of the device is provided with a main control box (24) and a solenoid valve manifold (16).

2. The welding and laser scanning alternating connection device according to claim 1, characterized in that: The main control box (24) is electrically connected to the left feeding rodless cylinder (3), the right feeding rodless cylinder (10), the unloading rodless cylinder (18), the lifting cylinder one (5), the lifting cylinder two (15), and the gripper cylinder (13).

3. The welding and laser scanning alternating connection device according to claim 2, characterized in that: The air circuits of the left feeding rodless cylinder (3) and the right feeding rodless cylinder (10) are interlocked, and the left product positioning fixture (7) and the right product positioning fixture (23) are configured to move alternately.

4. The welding and laser scanning alternating connection device according to claim 3, characterized in that: The top of the product left positioning fixture (7) and the product right positioning fixture (23) are provided with six product receiving slots.

5. The welding and laser scanning alternating connection device according to claim 4, characterized in that: An auxiliary positioning device (25) is provided on the top of the gripper cylinder (13). The auxiliary positioning device (25) includes an auxiliary mounting plate (251). The auxiliary mounting plate (251) is fixedly connected to the top of the gripper cylinder (13). An air pipe (252) is slidably connected through the top of the auxiliary mounting plate (251). A nozzle (253) is fixedly connected to one end of the air pipe (252). An air guide pipe (254) is slidably connected through the end of the air pipe (252) away from the nozzle (253). A buffer plate (255) is fixedly connected to the circumferential surface of the air pipe (252). A spring (256) is fixedly connected to the top of the buffer plate (255). An air inlet (257) is slidably connected through the end of the air guide pipe (254) away from the air pipe (252).

6. The welding and laser scanning alternating connection device according to claim 5, characterized in that: The end of the spring (256) away from the buffer plate (255) is fixedly connected to the bottom of the auxiliary mounting plate (251), and the top of the product (8) is located on the displacement trajectory of the bottom of the nozzle (253).

7. The welding and laser scanning alternating connection device according to claim 6, characterized in that: The number of air tubes (252), nozzles (253), buffer plates (255) and springs (256) is set in several pairs, and they are symmetrical to each other along the vertical central axis of the auxiliary mounting plate (251).

8. The welding and laser scanning alternating connection device according to claim 7, characterized in that: The top of the device fixing base plate (1) is provided with a pre-cleaning device (26), which includes a negative pressure plate (261). The negative pressure plate (261) is fixedly connected to the top of the device fixing base plate (1). A filter screen (262) is snapped onto the top of the negative pressure plate (261). A jet seat (263) is fixedly connected to the top of the device fixing base plate (1). A universal nozzle (264) is fixedly connected through the top of the jet seat (263). An air suction pipe (265) is fixedly connected through the circumferential surface of the negative pressure plate (261).

9. The welding and laser scanning alternating connection device according to claim 8, characterized in that: An air intake valve (27) is provided on the side of the universal nozzle (264). There are two universal nozzles (264) and jet seat (263), and they are interconnected internally.

10. The welding and laser scanning alternating connection device according to claim 9, characterized in that: The filter screen (262) has a round hole at the top, and the air outlet of the universal nozzle (264) is located above the left positioning fixture (7) of the product.

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