An automatic copper welding equipment for an air conditioner stop valve

Abstract

The present invention belongs to the technical field of welding, and provides an automatic copper welding device for an air conditioner stop valve, including a base. A turntable is arranged on the base, and a first rotary power member for driving the turntable to rotate is fixedly installed on the base. A plurality of first brackets and second brackets are fixedly installed on the turntable and are distributed in a circumferential array around the axis of the turntable, so as to solve the technical problem in the prior art that the precise positioning of the copper pipe cannot be carried out, resulting in the deformation of the copper pipe. In the present invention, the stop valve is placed and positioned by a placement plate, and the copper pipe is placed and positioned by a support rod and a positioning plate, so as to ensure the accuracy of the positioning of the copper pipe and the stop valve. Moreover, the staff can change the angle of the lifting frame by rotating the dial, so as to change the placement angle of the copper pipe. The present invention can be widely applied to the operation scenarios of pipeline connection.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding, and particularly relates to an automatic copper welding device for an air conditioner stop valve. Background Art

[0002] The stop valve is a joint installed on the outdoor unit of the air conditioner, and this joint is used for connecting the outdoor unit and the indoor unit of the air conditioner. The stop valve generally consists of a valve seat, a valve core, a cap, and a connecting pipe. Among them, the material of the valve seat is generally brass, and the material of the connecting pipe is generally red copper. In the actual production process, the connecting pipe made of red copper material needs to be welded to the valve seat made of brass material.

[0003] During the welding process, there are requirements for the angle and direction between the connecting pipe and the valve seat. However, due to the unreasonable design of the existing welding device, the angle between the valve seat and the connecting pipe is often welded incorrectly. For the above technical problems, the Chinese patent with the patent publication number CN104816121B, after fixing the valve seat of the stop valve during use, then inserts one end of the connecting pipe into the valve seat, and the other end is placed on the support plate of the positioning device. The angle of the connecting pipe is adjusted by moving the moving column arranged on the support plate. However, when in use, one end of the red copper pipe is inserted into the valve seat manually, and the red copper pipe cannot be positioned. Therefore, when the red copper pipe is inserted into the valve seat, it cannot be ensured that the connecting hole of the red copper pipe and the valve seat are coaxially arranged. Furthermore, when the red copper pipe is inserted into the valve seat, it will collide with the inner wall of the connecting hole of the valve seat, causing the deformation of the red copper pipe and affecting the connection quality between the red copper pipe and the valve seat. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic copper welding device for an air conditioner stop valve, aiming to solve the technical problem that the red copper pipe cannot be accurately positioned in the prior art, resulting in the deformation of the red copper pipe.

[0005] The present invention is realized as follows: An automatic copper welding device for an air conditioner stop valve includes a base. A turntable is arranged on the base, and a first rotating power component for driving the turntable to rotate is fixedly installed on the base. A plurality of first brackets and second brackets are fixedly installed on the turntable and are circumferentially and arrayedly distributed around the axis of the turntable. Two groups of symmetrically distributed placing plates are slidably installed on the first brackets. The end of the placing plate far from the turntable is of an L-shaped structure. A positioning column is fixedly installed on the horizontal section of the placing plate. A second elastic component is fixedly installed on the placing plate, and the end of the second elastic component far from the placing plate is fixedly connected to the middle of the first bracket. A plurality of welding components corresponding to the positions of the first brackets are arranged on the base;

[0006] The second bracket corresponds to the first bracket in position, and a lifting plate is slidably mounted on the second bracket. A lifting frame is arranged on the lifting plate. A support rod is fixedly mounted on the side of the vertical section of the lifting frame. A third telescopic member is fixedly mounted on the horizontal section of the lifting frame. A first pressing plate is arranged at the output end of the third telescopic member. A positioning plate is slidably mounted on the vertical section of the lifting frame. One end of the positioning plate is provided with a V-shaped structure. A screw rod for driving the positioning plate to move is rotatably mounted on the vertical section of the lifting frame.

[0007] Further technical solution: A clamping block is slidably mounted on the horizontal section of the placing plate. The clamping block is located between the positioning column and the vertical section at the top of the placing plate. A first elastic member is fixedly mounted on the side of the clamping block. One end of the first elastic member away from the clamping block is fixedly connected to the vertical section at the top of the placing plate. A guide rod for guiding the clamping block is slidably mounted on the vertical section at the top of the placing plate. A bevel structure is arranged on the side of the clamping block close to the positioning column, and the bevel structure is located at the top of the clamping block.

[0008] Further technical solution: A second telescopic member is fixedly mounted on the side of the first bracket. Two groups of first stay wires are fixedly connected to the output end of the second telescopic member. One end of the first stay wire away from the second telescopic member is fixedly connected to the placing plate on the same side. A guide shaft for changing the moving direction of the first stay wire is fixedly mounted on the first bracket.

[0009] Further technical solution: The symmetry plane of the V-shaped structure on the positioning plate coincides with the symmetry plane of the corresponding placing plate. The axis of the support rod is located on the symmetry plane of the V-shaped structure on the positioning plate.

[0010] Further technical solution: The welding assembly includes a gear ring. The gear ring is rotatably mounted on the turntable, and the corresponding first bracket is located inside the gear ring. The rotation axis of the gear ring is located in the symmetry plane of the placing plate. A side plate is fixedly mounted on the gear ring. A first telescopic member is fixedly mounted on the top of the side plate. A welding torch is fixedly mounted at the output end of the first telescopic member. A second rotary power member for driving the gear ring to rotate is arranged on the turntable.

[0011] Further technical solution: The lifting frame is rotatably mounted at the end of the lifting plate through a rotating shaft. A scale disk is fixedly mounted on the top of the rotating shaft, and a fixing screw is threadedly mounted on the scale disk.

[0012] Further technical solution: A second pressing plate is arranged on the first pressing plate. The second pressing plate and the first pressing plate are connected by a plurality of telescopic rods. The telescopic rods are rotatably connected to both the first pressing plate and the second pressing plate. A third elastic member is arranged on the telescopic rod. Both ends of the third elastic member are fixedly connected to both ends of the telescopic rod. A third stay wire is fixedly connected to the first pressing plate. The third stay wire is fixedly connected to the second pressing plate. When the third stay wire is in a vertical state, the telescopic rod is in an inclined state.

[0013] Further technical solution: Through grooves are formed at both ends of the second pressing plate. Two groups of symmetrically distributed clamping plates are rotatably installed in the through grooves. A counterweight block is arranged at one end of the clamping plate far from its rotation axis. A plurality of second stay wires corresponding to the positions of the clamping plates are fixedly connected to the second pressing plate. The second stay wires are connected to the corresponding clamping plates. When the second stay wires are in a straight state, the clamping plates form an angle with the vertical plane.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The stop valve is placed and positioned by the placing plate, and the copper pipe is placed and positioned by the support rod and the positioning plate, so as to ensure the accuracy of the positioning of the copper pipe and the stop valve. And the staff can change the angle of the lifting frame by rotating the dial, so as to change the placing angle of the copper pipe, so as to adjust the angle after the copper pipe is connected to the stop valve. After the adjustment is completed, it is fixed by screws, so that the angle of the copper pipe can be adjusted before the copper pipe is connected to the stop valve and the accurate positioning of the copper pipe and the stop valve can be ensured, the accuracy of the connection between the copper pipe and the stop valve is ensured, and the quality of subsequent welding is improved.

[0016] 2. When the staff places the stop valve, the end of the installation part of the stop valve will contact the inclined surface of the clamping block. When the stop valve moves downward, the installation part of the stop valve will push the clamping block away from the positioning column through the inclined surface and compress the first elastic member. Finally, the end surface of the installation part of the stop valve will contact the vertical end surface of the clamping block. At this time, the first elastic member is in a compressed state and will exert a thrust on the clamping block, and then exert a thrust on the installation part of the stop valve, so as to clamp and fix the stop valve under the action of the thrust, further improving the stability of the stop valve during placement, ensuring that the lower surface of the installation part of the stop valve is in close contact with the horizontal section of the placing plate, avoiding tilting of the stop valve during placement, ensuring the accuracy of the hole position positioning on the valve body, and improving the quality of subsequent connection and welding between the valve body and the pipeline.

[0017] 3. When the third telescopic member drives the first pressing plate to move downward, the clamping plate first contacts the copper pipe. Since a counterweight block is arranged at the lower end of the clamping plate, when the second pressing plate moves downward, the clamping plate can exert a thrust on the copper pipe from both sides of the copper pipe, so as to ensure that the axis of the horizontal section of the copper pipe and the axis of the support rod are on the same horizontal plane, further improving the accuracy of the position of the copper pipe during placement and ensuring the accuracy of the positioning of the copper pipe;

[0018] 4. After the second pressing plate contacts the upper surface of the copper tube, the first pressing plate continues to descend. Since the telescopic rod is in an inclined state, when the first pressing plate descends, it will shorten the telescopic rod and compress the third elastic member. After the third elastic member is compressed, it will exert a thrust on the second pressing plate. Thus, the second pressing plate will exert a thrust on the copper tube towards the vertical section of the lifting frame, enabling the vertical section of the copper tube to closely adhere to the V-shaped structure of the positioning plate, further improving the positioning accuracy when placing the copper tube and ensuring the accuracy of the subsequent connection between the copper tube and the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall first perspective structure of the present invention.

[0020] Figure 2 is a schematic diagram of the overall first perspective structure of the present invention.

[0021] Figure 3 is a schematic diagram of the structure of the welding assembly in the present invention.

[0022] Figure 4 is a schematic diagram of the structure of the placement plate in the present invention.

[0023] Figure 5 is Figure 4 an enlarged schematic diagram of area A1 in

[0024] Figure 6 is a schematic diagram of the structure of the lifting frame in the present invention.

[0025] Figure 7 is Figure 6 an enlarged schematic diagram of area A2 in

[0026] In the drawings: 1. Base; 2. Turntable; 3. First rotating power member; 4. Gear ring; 5. Gear; 6. Second rotating power member; 7. Side plate; 8. First telescopic member; 9. Welding torch; 10. First bracket; 11. Placement plate; 12. Positioning post; 13. Block; 14. First elastic member; 15. Second telescopic member; 16. First wire; 17. Guide shaft; 18. Second elastic member; 19. Second bracket; 20. Lifting plate; 21. Servo module; 22. Lifting frame; 23. Support rod; 24. Third telescopic member; 25. First pressing plate; 26. Second pressing plate; 27. Telescopic rod; 28. Third elastic member; 29. Limit post; 30. Through groove; 31. Clamping plate; 32. Second wire; 33. Positioning plate; 34. Screw; 35. Dial; 36. Third wire; 37. Welding assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] The following describes in detail the specific implementation of the present invention in conjunction with specific embodiments.

[0029] As Figures 1 - 7 shown, an automatic copper welding device for an air conditioner stop valve provided by the present invention includes a base 1, a turntable 2 is arranged on the base 1, and a first rotating power member 3 for driving the turntable 2 to rotate is fixedly installed on the base 1. A plurality of first brackets 10 and second brackets 19 are fixedly installed on the turntable 2 and are distributed in a circumferential array around the axis of the turntable 2. Two groups of symmetrically distributed placement plates 11 are slidably installed on the first bracket 10. The end of the placement plate 11 away from the turntable 2 is an L-shaped structure. A positioning column 12 is fixedly installed on the horizontal section of the placement plate 11. A second elastic member 18 is fixedly installed on the placement plate 11. The end of the second elastic member 18 away from the placement plate 11 is fixedly connected to the middle of the first bracket 10. The second elastic member 18 is distributed along the horizontal section of the first bracket 10. A second telescopic member 15 is fixedly installed on the side of the first bracket 10. The output end of the second telescopic member 15 is fixedly connected to two groups of first wire ropes 16. The end of the first wire rope 16 away from the second telescopic member 15 is fixedly connected to the placement plate 11 on the same side. A guide shaft 17 for changing the moving direction of the first wire rope 16 is fixedly installed on the first bracket 10. A plurality of welding assemblies 37 corresponding to the positions of the first brackets 10 are arranged on the base 1;

[0030] The second bracket 19 corresponds to the position of the first bracket 10, and a lifting plate 20 is slidably installed on the second bracket 19. A lifting frame 22 is arranged on the lifting plate 20. The lifting frame 22 is rotatably installed at the end of the lifting plate 20 through a rotating shaft. A scale disk 35 is fixedly installed at the top of the rotating shaft, and a fixing screw is threadedly installed on the scale disk 35. A support rod 23 is fixedly installed on the side of the vertical section of the lifting frame 22. A third telescopic member 24 is fixedly installed on the horizontal section of the lifting frame 22. The output end of the third telescopic member 24 is provided with a first pressing plate 25. A positioning plate 33 is slidably installed on the vertical section of the lifting frame 22. One end of the positioning plate 33 is a V-shaped structure. The symmetry plane of the V-shaped structure on the positioning plate 33 coincides with the symmetry plane of the corresponding placement plate 11. The axis of the support rod 23 is located on the symmetry plane of the V-shaped structure on the positioning plate 33. A screw rod 34 for driving the positioning plate 33 to move is rotatably installed on the vertical section of the lifting frame 22.

[0031] In practical application of this embodiment, according to the model of the globe valve to be welded, the second telescopic member 15 extends to drive the first cable 16 to move. When the first cable 16 moves, it drives the two placing plates 11 to move inwards and compress the second elastic member 18, so that the distance between the two positioning columns 12 is within the range of the distance between the two through holes on the mounting part of the globe valve. Then, the staff places the globe valve body on the placing plates 11, makes the mounting part of the globe valve contact with the placing plates 11, and the positioning columns 12 are located in the through holes of the mounting part of the globe valve. Then, the second telescopic member 15 resets. At this time, under the action of the second elastic member 18, the placing plates 11 move away from each other, and thus the positioning columns 12 will contact the inner sides of the through holes on the mounting part of the globe valve and complete the clamping and fixing of the globe valve;

[0032] According to the diameter of the copper pipe, the screw 34 drives the positioning plate 33 to move, so that when the vertical section of the copper pipe contacts the V-shaped structure of the positioning plate 33, its vertical section is coaxially arranged with the connection hole on the globe valve seat. After the adjustment is completed, the staff inserts the horizontal section of the copper pipe on the support rod 23. Under the action of gravity, the vertical section of the copper pipe will point vertically downward. Push the copper pipe to move until the vertical section of the copper pipe contacts the V-shaped structure of the positioning plate 33. At this time, the vertical section of the copper pipe is coaxially arranged with the connection hole on the globe valve seat. Then, the third telescopic member 24 drives the first pressing plate 25 to move downward to press the copper pipe tightly on the support rod 23, and thus the fixing of the copper pipe can be completed;

[0033] Subsequently, the servo module 21 drives the lifting frame 22 to move downward through the lifting plate 20 until the vertical section of the copper pipe is inserted into the connection hole on the globe valve and then stops. At this time, the connection between the copper pipe and the globe valve can be completed. The staff can rotate the dial 35 to change the angle of the lifting frame 22, so as to change the placement angle of the copper pipe, and thus adjust the angle after the copper pipe is connected to the globe valve. After the adjustment is completed, it is fixed by screws, so that the angle of the copper pipe can be adjusted before the copper pipe is connected to the globe valve and the accurate positioning of the copper pipe and the globe valve can be ensured, the accuracy of the connection between the copper pipe and the globe valve can be guaranteed, and the quality of subsequent welding can be improved;

[0034] After the connection between the purple copper pipe and the stop valve is completed, the first rotating power member 3 drives the turntable 2 to rotate by a set angle, so that the next set of placing plates 11 rotates to the working position of the staff. At this time, the staff can continue with the feeding operation. At the same time, the purple copper pipe that has completed feeding in the previous group and the valve body are welded by the welding assembly 37. After the welding is completed, the second telescopic member 15 extends again to drive the two positioning columns 12 to approach, thereby releasing the clamping and fixing of the installation part of the stop valve. Then, the lifting plate 20 rises to drive the welded purple copper pipe and the stop valve to rise together. When the welded purple copper pipe and the stop valve rotate to the working position of the staff again, the third telescopic member 24 drives the first pressing plate 25 to move upward to release the fixing of the purple copper pipe. At this time, the staff quickly removes the purple copper pipe and the stop valve and installs a new purple copper pipe and stop valve, realizing the rapid blanking of the purple copper pipe and the stop valve.

[0035] In an example of this embodiment, the first rotating power member 3 is a first motor. Of course, it can also be other components such as a hydraulic motor that can output rotational power. The turntable 2 is driven to rotate by the first motor. The second telescopic member 15 and the third telescopic member 24 are respectively a first electric telescopic rod and a third electric telescopic rod. Of course, it can also be other components such as a hydraulic cylinder that can actively change the length. The two placing plates 11 are driven to move synchronously by the first electric telescopic rod, and the first pressing plate 25 is driven to move up and down by the third electric telescopic rod.

[0036] As Figure 3 、 Figure 4 shown, an automatic copper welding device for an air conditioner stop valve provided by the present invention. A block 13 is slidably installed on the horizontal section of the placing plate 11. The block 13 is located between the positioning column 12 and the vertical section at the top of the placing plate 11. A first elastic member 14 is fixedly installed on the side of the block 13. One end of the first elastic member 14 away from the block 13 is fixedly connected to the vertical section at the top of the placing plate 11. A guide rod for guiding the block 13 is slidably installed on the vertical section at the top of the placing plate 11. A slope structure is provided on the side of the block 13 close to the positioning column 12, and the slope structure is located at the top of the block 13.

[0037] In actual application of this embodiment, when the staff places the globe valve, the end of the installation part of the globe valve will contact the inclined surface of the clamping block 13. When the globe valve moves downward, the installation part of the globe valve will push the clamping block 13 to move away from the positioning column 12 through the inclined surface and compress the first elastic member 14. Eventually, the end face of the installation part of the globe valve will contact the vertical end face of the clamping block 13. At this time, the first elastic member 14 is in a compressed state and will exert a thrust on the clamping block 13, and then exert a thrust on the installation part of the globe valve, so as to clamp and fix the globe valve under the action of the thrust, further improving the stability of the globe valve when placed, ensuring that the lower surface of the installation part of the globe valve is in close contact with the horizontal section of the placement plate 11, avoiding tilting of the globe valve when placed, ensuring the accuracy of the hole position positioning on the valve body, and improving the quality of subsequent connection and welding between the valve body and the pipeline.

[0038] In an example of the present invention, the first elastic member 14 is a first spring. Of course, it can also be other elastic components such as elastic balls. The first spring exerts a thrust on the clamping block 13, thereby realizing the clamping and fixing of the valve body.

[0039] As Figure 3 、 Figure 4 As shown in

[0040] In actual application of this embodiment, after the globe valve is docked with the copper pipe, the first telescopic member 8 drives the welding torch 9 to move. After the end of the welding torch 9 contacts the connection part of the globe valve and the copper pipe, it stops. At this time, the second rotary power member 6 drives the gear ring 4 to rotate through the gear 5, so that the welding torch 9 can rotate around the connection part of the globe valve and the copper pipe for one week for welding, realizing the full welding of the connection part of the globe valve and the copper pipe. After welding is completed, the first telescopic member 8 drives the welding torch 9 to reset.

[0041] In an example of the present invention, the second rotary power member 6 is a second motor. Of course, it can also be other components that can output rotary power such as hydraulic motors. The second motor drives the welding torch 9 to rotate. The first telescopic member 8 is a first electric telescopic rod. Of course, it can also be other components that can actively change in length such as hydraulic cylinders. The first electric telescopic rod drives the welding torch 9 to move.

[0042] As Figure 6 、 Figure 7As shown in the figure, an automatic copper welding device for an air conditioner stop valve provided by the present invention. A second pressing plate 26 is arranged on a first pressing plate 25. The second pressing plate 26 and the first pressing plate 25 are connected by a plurality of telescopic rods 27. The telescopic rods 27 are rotatably connected to both the first pressing plate 25 and the second pressing plate 26. A third elastic member 28 is arranged on the telescopic rod 27. Both ends of the third elastic member 28 are fixedly connected to both ends of the telescopic rod 27. A third pulling wire 36 is fixedly connected to the first pressing plate 25. The third pulling wire 36 is fixedly connected to the second pressing plate 26. When the third pulling wire 36 is in a vertical state, the telescopic rod 27 is in an inclined state.

[0043] Specifically, through grooves 30 are formed at both ends of the second pressing plate 26. Two groups of symmetrically distributed clamping plates 31 are rotatably installed in the through grooves 30. A counterweight is arranged at one end of the clamping plate 31 far from its rotation axis. A plurality of second pulling wires 32 corresponding to the positions of the clamping plates 31 are fixedly connected to the second pressing plate 26. The second pulling wires 32 are connected to the corresponding clamping plates 31. When the second pulling wires 32 are in a straight state, the clamping plates 31 form an angle with the vertical plane.

[0044] In actual application of this embodiment, when the third telescopic member 24 drives the first pressing plate 25 to move downward, the clamping plate 31 first contacts the copper tube. Since a counterweight is arranged at the lower end of the clamping plate 31, when the second pressing plate 26 moves downward, the clamping plate 31 can apply a thrust to the copper tube from both sides of the copper tube, so as to ensure that the axis of the horizontal section of the copper tube and the axis of the support rod 23 are on the same horizontal plane, further improving the accuracy of the position of the copper tube when placed and ensuring the accuracy of the positioning of the copper tube.

[0045] After that, the second pressing plate 26 contacts the upper surface of the copper tube. At this time, the first pressing plate 25 continues to descend. Since the telescopic rod 27 is in an inclined state, when the first pressing plate 25 descends, it will cause the telescopic rod 27 to shorten and compress the third elastic member 28. After the third elastic member 28 is compressed, it will apply a thrust to the second pressing plate 26. Thus, the second pressing plate 26 will apply a thrust to the copper tube towards the vertical section of the lifting frame 22, so that the vertical section of the copper tube can be closely attached to the V-shaped structure of the positioning plate 33, further improving the accuracy of the positioning of the copper tube when placed and ensuring the accuracy of the subsequent connection between the copper tube and the valve body. When the limit post 29 contacts the second pressing plate 26, at this time, the copper tube can be pressed tightly on the support rod 23, and the position where the second pressing plate 26 contacts the copper tube corresponds to the support rod 23, avoiding deformation of the copper tube caused by clamping and fixing.

[0046] In an example of the present invention, the third elastic member 28 is a third spring. Of course, it can also be other elastic components such as elastic balls. A lateral thrust is applied to the second pressing plate 26 by compressing the third spring.

[0047] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

[0048] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic brazing device for an air conditioning stop valve, comprising a base (1), characterized in that: A turntable (2) is arranged on the base (1), and a first rotating power member (3) for driving the turntable (2) to rotate is fixedly mounted on the base (1); a plurality of first brackets (10) and second brackets (19) are fixedly mounted on the turntable (2) and are distributed in a circular array around the axis of the turntable (2); two groups of symmetrically distributed placement plates (11) are slidably mounted on the first bracket (10); the end of the placement plate (11) away from the turntable (2) is an L-shaped structure; a positioning column (12) is fixedly mounted on the horizontal section of the placement plate (11); a second elastic member (18) is fixedly mounted on the placement plate (11); the end of the second elastic member (18) away from the placement plate (11) is fixedly connected to the middle part of the first bracket (10); and a plurality of welding components (37) corresponding to the position of the first bracket (10) are arranged on the base (1); The second bracket (19) corresponds to the first bracket (10) in position, and a lifting plate (20) is slidably mounted on the second bracket (19), a lifting frame (22) is arranged on the lifting plate (20), a support rod (23) is fixedly mounted on the side of the vertical section of the lifting frame (22), a third telescopic member (24) is fixedly mounted on the horizontal section of the lifting frame (22), a first pressing plate (25) is arranged at the output end of the third telescopic member (24), a positioning plate (33) is slidably mounted on the vertical section of the lifting frame (22), one end of the positioning plate (33) is arranged in a V-shaped structure, and a screw rod (34) for driving the positioning plate (33) to move is rotatably mounted on the vertical section of the lifting frame (22); The horizontal section of the placement plate (11) is slidably mounted with a block (13), the block (13) being located between the positioning column (12) and the vertical section at the top of the placement plate (11), a first elastic member (14) being fixedly mounted on the side of the block (13), an end of the first elastic member (14) away from the block (13) being fixedly connected to the vertical section at the top of the placement plate (11), a guide rod for guiding the block (13) being slidably mounted on the vertical section at the top of the placement plate (11), a slope structure being arranged on the side of the block (13) close to the positioning column (12), the slope structure being located at the top of the block (13); The lifting frame (22) is rotatably mounted on the end of the lifting plate (20) via a rotating shaft, a dial (35) is fixedly mounted on the top of the rotating shaft, and a fixing screw is threadedly mounted on the dial (35).

2. The automatic brazing equipment for air conditioning stop valve according to claim 1 is characterized in that: A second telescopic member (15) is fixedly mounted on the side of the first bracket (10); two groups of first pull wires (16) are fixedly connected to the output end of the second telescopic member (15); one end of the first pull wire (16) away from the second telescopic member (15) is fixedly connected to the placement plate (11) on the same side; and a guide shaft (17) for changing the moving direction of the first pull wire (16) is fixedly mounted on the first bracket (10).

3. The automatic brazing equipment for air conditioning stop valve according to claim 1 is characterized in that: The symmetry plane of the V-shaped structure on the positioning plate (33) coincides with the symmetry plane of the corresponding placement plate (11), and the axis of the support rod (23) is located on the symmetry plane of the V-shaped structure on the positioning plate (33).

4. The automatic brazing equipment for air conditioning stop valve according to claim 1, characterized in that: The welding assembly (37) comprises a gear ring (4), the gear ring (4) is rotatably mounted on a turntable (2) and a corresponding first bracket (10) is located inside the gear ring (4), the rotation axis of the gear ring (4) is located within a symmetric plane of a placement plate (11), a side plate (7) is fixedly mounted on the gear ring (4), a first telescopic member (8) is fixedly mounted on the top of the side plate (7), a welding gun (9) is fixedly mounted on the output end of the first telescopic member (8), and a second rotating power member (6) for driving the gear ring (4) to rotate is provided on the turntable (2).

5. The automatic brazing equipment for air conditioning stop valve according to claim 1 is characterized in that: A second pressing plate (26) is arranged on the first pressing plate (25), and the second pressing plate (26) is connected to the first pressing plate (25) via a plurality of telescopic rods (27). The telescopic rods (27) are rotatably connected to the first pressing plate (25) and the second pressing plate (26). A third elastic member (28) is arranged on the telescopic rod (27), and two ends of the third elastic member (28) are fixedly connected to two ends of the telescopic rod (27). A third pull wire (36) is fixedly connected to the first pressing plate (25), and the third pull wire (36) is fixedly connected to the second pressing plate (26). When the third pull wire (36) is in a vertical state, the telescopic rod (27) is in an inclined state.

6. The automatic brazing equipment for air conditioning stop valve according to claim 5, characterized in that: Both ends of the second pressure plate (26) are provided with through grooves (30), and two groups of symmetrically distributed clamping plates (31) are rotatably mounted in the through grooves (30). A counterweight block is arranged at one end of the clamping plate (31) away from its rotation axis. A plurality of groups of second pull wires (32) corresponding to the positions of the clamping plates (31) are fixedly connected to the second pressure plate (26), and the second pull wires (32) are connected to the corresponding clamping plates (31). When the second pull wires (32) are in a straight line state, an angle is arranged between the clamping plates (31) and the vertical plane.

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