A welding gun assembling device based on double-layer circulation conveying

Abstract

The present application relates to the technical field of welding gun assembly, and discloses a welding gun assembly equipment based on double-layer circulating conveying, which comprises: upper-layer conveying belts and lower-layer conveying belts with opposite advancing directions, a plurality of assembly stations are sequentially arranged on the upper-layer conveying belts along the advancing direction, and the upper-layer conveying belts and the lower-layer conveying belts are used for bearing assembly workbenches; first elevators and second elevators arranged on both sides of the assembly stations are used for transferring the assembly workbenches between the upper-layer conveying belts and the lower-layer conveying belts; lifting platforms are arranged on the first elevators and the second elevators, and automatic positioning units are adaptively arranged on the lifting platforms and the assembly workbenches. The welding gun assembly equipment adopts the double-layer circulating conveying mode to realize automatic backflow of the assembly workbenches, does not need manual carrying, reduces the occupied space of the equipment through the upper-and-lower double-layer design, and realizes joint control of the conveying belts and the elevators, so that the assembly workbenches are automatically positioned during the transfer process, the positioning accuracy during the circulation of the assembly workbenches is improved, and the accuracy of the position during the welding gun assembly process is ensured.

Description

Technical Field

[0001] This invention relates to the field of welding torch assembly technology, and more specifically, to a welding torch assembly device based on a double-layer circulating conveyor. Background Technology

[0002] During the production of welding torches, various components need to be assembled. Existing technology, such as Chinese Patent Publication No. CN210060915U, discloses an assembly fixture for an integrated resistance spot welding torch, including a fixed base, a fixed plate, a positioning block, and a clamping mechanism. The positioning block is placed within the suspension holes of the welding torch components to suspend them, and the clamping mechanism is used to clamp the welding torch components at the suspension hole positions. By clamping and fixing the welding torch components onto this assembly fixture, workers can more easily assemble the welding torch components by simply following the clamping reference of the fixture.

[0003] However, in actual use, the existing air-cooled welding gun assembly process includes steps such as locking the gun head, welding the switch, thermoplastic wrapping with heat shrink tubing, and tightening the screws on the gun head handle. During assembly, the assembly workbench needs to be moved between workstations for each assembly step. Using the aforementioned simple assembly fixture, manual transfer is required during the assembly process, and repositioning is necessary after moving between workstations, resulting in low assembly efficiency and inability to guarantee positioning accuracy during assembly.

[0004] Therefore, it is necessary to propose a welding torch assembly device based on a double-layer circulating conveyor to at least partially solve the problems existing in the prior art. Summary of the Invention

[0005] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, the present invention provides a welding torch assembly device based on a double-layer circulating conveyor, comprising:

[0007] The upper and lower conveyor belts travel in opposite directions. The upper conveyor belt has multiple assembly stations set up sequentially along the travel direction. The upper and lower conveyor belts are used to support the assembly workbench.

[0008] The first and second elevators, located on either side of the assembly station, are used to transfer the assembly workbench between the upper and lower conveyor belts. The first and second elevators are equipped with lifting platforms, and automatic positioning units are adapted to be installed on the lifting platforms and the assembly workbench.

[0009] Preferably, the assembly station includes a gun head locking station, a switch welding station, a thermoplasticizing station, and a screw-locking station arranged in sequence.

[0010] Preferably, the first elevator includes:

[0011] Two drive screws are symmetrically arranged inside the first elevator. The top of the drive screw is connected to the transmission box, which is installed on the inner wall of the first elevator. Two threaded sleeves are provided at one end of the lifting platform, and the two threaded sleeves are screwed onto the drive screws respectively.

[0012] A drive shaft is connected to two transmission boxes at both ends, and a first pulley is installed in the middle of the drive shaft.

[0013] The lifting motor is installed at the bottom of the first lifting machine. The output shaft of the lifting motor is connected to a second pulley, which is connected to the first pulley via a synchronous belt.

[0014] Preferably, the first elevator further includes:

[0015] A transverse conveyor belt is installed on both sides of the lifting platform, and the width of the transverse conveyor belt is equal to that of the upper and lower conveyor belts.

[0016] Preferably, the automatic positioning unit includes:

[0017] Positioning posts are connected to the bottom of the assembly workbench and are set horizontally.

[0018] The positioning seat is connected to the top of the lifting platform, and the positioning column is inserted into the positioning seat.

[0019] Preferably, the positioning seat is connected to a first arc-shaped positioning element and a second arc-shaped positioning element at its center. The two first arc-shaped positioning elements are symmetrically arranged at the center of the positioning seat. The second arc-shaped positioning element is nested inside the first arc-shaped positioning element. A spring connects the first arc-shaped positioning element and the second arc-shaped positioning element. The side of the second arc-shaped positioning element near the assembly workbench is provided with an outwardly expanding transition surface. The positioning post is inserted into the second arc-shaped positioning element.

[0020] Preferably, the side of the second arc-shaped positioning component away from the assembly worktable is provided with multiple arc-shaped extension components, and the arc-shaped extension components are provided with plug-in sleeves. The plug-in sleeves on the multiple arc-shaped extension components are nested and slide relative to each other. The inner ring of the arc-shaped extension component is provided with multiple friction pads, and the positioning post contacts the friction pads.

[0021] Preferably, a magnetic positioning element is also provided at the center of the positioning seat. The magnetic positioning element is arc-shaped and symmetrically arranged inside the positioning seat. The magnetic positioning element is located on the outside of the arc-shaped extension. A first magnetic block is uniformly arranged on the inner wall of the magnetic positioning element. A second magnetic block is uniformly arranged on the outer wall of the arc-shaped extension. The first magnetic block and the second magnetic block are positioned correspondingly and have a repulsive force.

[0022] Preferably, the magnetic positioning component is equipped with a distance sensor, and the arc-shaped extension component is equipped with multiple sensing points. The distance sensor is used to detect the distance to the arc-shaped extension component.

[0023] Preferably, the inner wall of the arc-shaped extension is provided with multiple sets of friction frames. The friction frame includes a bending frame, a ball seat, and a friction pad. One end of the bending frame is connected to the inner wall of the arc-shaped extension, and the other end is bent away from the assembly workbench. The ball seat is connected to the bending frame, and a cavity is provided inside the ball seat. The friction pad is set as an airbag pad, and the air inlet end of the friction pad is connected to the ball seat cavity. An air pump is installed on the positioning seat, and the air pump is connected to the air inlet end of the ball seat cavity through an air supply pipe.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] This invention provides a welding gun assembly device based on a double-layer circulating conveyor. The double-layer circulating conveyor allows the assembly workbench to move with the upper conveyor belt during welding gun assembly. After assembly, the finished product is removed at the elevator and transferred to the lower conveyor belt under the elevator's drive. The lower conveyor belt's movement enables automatic return of the assembly workbench, eliminating the need for manual handling. The double-layer design reduces the equipment's space requirements. The conveyor belt and elevator are jointly controlled, automatically positioning the assembly workbench during transfer, improving its positioning accuracy and ensuring the precision of the welding gun assembly process.

[0026] The welding torch assembly equipment based on double-layer circulating conveying described in this invention will have other advantages, objectives and features that will be apparent in part from the following description, and in part from what those skilled in the art will understand through study and practice of the invention. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the first elevator in this invention;

[0030] Figure 3 This is a schematic diagram of the lifting platform in this invention;

[0031] Figure 4 This is a schematic diagram of the positioning seat and positioning post in this invention;

[0032] Figure 5 This is a partial structural diagram of one side of the positioning seat in this invention;

[0033] Figure 6 This is a schematic diagram of the arc-shaped extension member in this invention;

[0034] Figure 7 This is a partial structural diagram of the friction frame in this invention.

[0035] In the diagram: 1. Upper conveyor belt; 2. Lower conveyor belt; 3. Assembly workbench; 4. First elevator; 5. Second elevator; 6. Lifting platform; 10. Screw tightening station; 11. Gun head locking station; 12. Switch welding station; 13. Thermoplastic station; 14. Transmission screw; 15. Transmission box; 16. Transmission shaft; 17. Synchronous belt; 18. Lifting motor; 19. Screw sleeve; 21. Transverse conveyor belt; 22. Positioning column; 23. Positioning seat; 24. First arc-shaped positioning component; 25. Second arc-shaped positioning component; 26. Spring; 27. Transition surface; 28. Arc-shaped extension component; 29. ​​Insert sleeve; 31. Magnetic positioning component; 32. First magnetic block; 33. Second magnetic block; 34. Bending frame; 35. Ball seat; 36. Friction pad; 37. Air pump; 38. Air supply pipe. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0037] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0038] Example 1:

[0039] like Figures 1-3 As shown, the present invention provides a welding torch assembly device based on a double-layer circulating conveyor, comprising:

[0040] The upper conveyor belt 1 and the lower conveyor belt 2 travel in opposite directions. The upper conveyor belt 1 is set with multiple assembly stations in sequence along the travel direction. The upper conveyor belt 1 and the lower conveyor belt 2 are used to support the assembly workbench 3.

[0041] The first elevator 4 and the second elevator 5, located on both sides of the assembly station, are used to transfer the assembly workbench 3 between the upper conveyor belt 1 and the lower conveyor belt 2. The first elevator 4 and the second elevator 5 are equipped with lifting platforms 6, and automatic positioning units are adapted to be installed on the lifting platforms 6 and the assembly workbench 3.

[0042] The assembly station includes a gun head locking station 11, a switch welding station 12, a thermoplastic station 13, and a screw locking station 10, which are arranged in sequence.

[0043] The working principle and beneficial effects of the above technical solution are as follows:

[0044] This invention provides a welding gun assembly device based on a double-layer circulating conveyor. During assembly, the welding gun components to be assembled are placed on the assembly workbench 3, which is placed on the lifting platform 6 of the first elevator 4. The first elevator 4 transfers the assembly workbench 3 to the upper conveyor belt 1. As the upper conveyor belt 1 moves, the assembly workbench 3 passes sequentially through the gun head locking station 11, the switch welding station 12, the thermoplastic station 13, and the screw-locking station 10, completing the welding gun assembly. The assembled welding gun is placed on the assembly workbench 3, and the upper conveyor belt 1 transfers the assembly workbench 3 to the lifting platform 6 of the second elevator 5. The worker can then remove the assembled welding gun. The second elevator 5 drives the lifting platform 6 to descend so that it faces the lower conveyor belt 2, transferring the assembly workbench 3 onto the lower conveyor belt 2. Finally, the assembly workbench 3 is transported back to the first elevator 4 along with the lower conveyor belt 2, completing the cycle.

[0045] Through the above structural design, a double-layer circulating conveyor system is adopted, so that the assembly workbench 3 moves with the upper conveyor belt 1 to assemble the welding guns. After assembly, the finished product is taken out at the elevator and transferred to the lower conveyor belt 2 under the drive of the elevator. The assembly workbench 3 is automatically returned with the movement of the lower conveyor belt 2, eliminating the need for manual handling. The upper and lower double-layer design reduces the space occupied by the equipment. The conveyor belt and the elevator are jointly controlled and automatically positioned during the transfer process, improving the positioning accuracy of the assembly workbench 3 during circulation and ensuring the accuracy of the position of the welding gun during the assembly process.

[0046] Example 2:

[0047] like Figure 2 , Figure 3 As shown, based on the above embodiment 1, the first elevator 4 includes:

[0048] Two drive screws 14 are symmetrically arranged inside the first elevator 4. The top of the drive screw 14 is connected to the transmission box 15, and the transmission box 15 is installed on the inner wall of the first elevator 4. Two threaded sleeves 19 are provided at one end of the lifting platform 6, and the two threaded sleeves 19 are respectively screwed onto the drive screw 14.

[0049] A drive shaft 16 is connected to two transmission boxes 15 at both ends, and a first pulley is installed in the middle of the drive shaft 16.

[0050] The lifting motor 18 is installed at the bottom of the first lifting machine 4. The output shaft of the lifting motor 18 is connected to a second pulley, which is connected to the first pulley via a synchronous belt 17.

[0051] The working principle and beneficial effects of the above technical solution are as follows:

[0052] When the first elevator 4 is in use, the elevator motor 18 is started, driving the second pulley to rotate. The second pulley, through the synchronous belt 17, forms a belt drive with the first pulley, causing the drive shaft 16 to rotate synchronously. The drive shaft 16, through the power conversion of the transmission boxes 15 on both sides, drives the transmission screw 14 to rotate, thereby moving the elevator platform 6 vertically. The elevator platform 6 rises and falls by the forward and reverse rotation of the elevator motor 18, allowing the elevator platform 6 to move between the upper conveyor belt 1 and the lower conveyor belt 2. The second elevator 5 has the same structure as the first elevator 4.

[0053] Example 3:

[0054] like Figure 2 , Figure 3 As shown, based on the above embodiment 2, the first elevator 4 further includes:

[0055] A transverse conveyor belt 21 is installed on both sides of the lifting platform 6. The width of the transverse conveyor belt 21 is equal to that of the upper conveyor belt 1 and the lower conveyor belt 2.

[0056] The working principle and beneficial effects of the above technical solution are as follows:

[0057] A transverse conveyor belt 21 is installed on the first elevator 4. When the assembly workbench 3 moves to the edge of the upper conveyor belt 1, the first elevator 4 moves the lifting platform 6 to the position of the upper conveyor belt 1, aligning the top of the transverse conveyor belt 21 with the top of the upper conveyor belt 1. The transverse conveyor belt 21 moves forward, transporting the assembly workbench 3 onto the upper conveyor belt 1, achieving horizontal loading and transverse movement of the assembly workbench 3. After assembly, the lifting platform 6 of the second elevator 5 is moved to the position of the upper conveyor belt 1, aligning the top of the transverse conveyor belt 21 with the top of the upper conveyor belt 1. The upper conveyor belt 1 moves, transporting the assembly workbench 3 onto the transverse conveyor belt 21. Then, the lifting platform 6 is lowered and transferred to the lower conveyor belt 2.

[0058] By using the transverse conveyor belt 21 in conjunction with the conveyor belt, the assembly workbench 3 can be moved transversely between the lifting platform 6 and the conveyor belt, ensuring the normal flow of the assembly workbench 3 and preventing the finished product from piling up at the outlet assembly workbench 3.

[0059] Example 4:

[0060] like Figure 3 , Figure 4 As shown, based on the above embodiment 3, the automatic positioning unit includes:

[0061] Positioning post 22 is connected to the bottom end of the assembly workbench 3 and is set horizontally;

[0062] Positioning seat 23 is connected to the top of the lifting platform 6, and positioning column 22 is inserted into the positioning seat 23.

[0063] The working principle and beneficial effects of the above technical solution are as follows:

[0064] The lifting platform 6 and the assembly workbench 3 are equipped with corresponding automatic positioning units. When the assembly workbench 3 moves to the lifting platform 6, it gradually enters the lifting platform 6 under the drive of the transverse conveyor belt 21. The positioning column 22 at the bottom of the assembly workbench 3 gradually inserts into the positioning seat 23. The two are inserted and cooperate to realize the positioning of the assembly workbench 3 and the lifting platform 6, reduce the shaking of the assembly workbench 3 during the lifting process, and ensure that the position is accurate when it cooperates with another layer of conveyor belt after lifting, thereby ensuring the position accuracy of the assembly process.

[0065] Example 5:

[0066] like Figures 4-7 As shown, based on the above embodiment 4, the center of the positioning base 23 is connected to a first arc-shaped positioning member 24 and a second arc-shaped positioning member 25. The two first arc-shaped positioning members 24 are symmetrically arranged at the center of the positioning base 23, and the two second arc-shaped positioning members 25 are respectively nested inside the two first arc-shaped positioning members 24. A spring 26 is connected between the first arc-shaped positioning member 24 and the second arc-shaped positioning member 25. The side of the second arc-shaped positioning member 25 near the assembly workbench 3 is provided with an outwardly expanding transition surface 27, and the positioning post 22 is inserted into the second arc-shaped positioning member 25.

[0067] The working principle and beneficial effects of the above technical solution are as follows:

[0068] The positioning base 23 has a nested first arc-shaped positioning element 24 and a second arc-shaped positioning element 25 at its center, connected by a spring 26. The positioning elements are symmetrically arranged at the center of the positioning base 23. When the assembly worktable 3 moves onto the lifting platform 6 and the positioning column 22 is inserted into the positioning base 23, the two second arc-shaped positioning elements 25 can be clamped on both sides of the positioning column 22. When the position of the assembly worktable 3 shifts, causing a deviation between the positioning column 22 and the positioning base 23, the positioning column 22 can slide along the transition surface 27 to the center of the two second arc-shaped positioning elements 25. At the same time, under the action of the spring 26, the second arc-shaped positioning elements 25 can deform slightly to adapt to the position of the positioning column 22, facilitating the insertion of the positioning column 22 between the two second arc-shaped positioning elements 25. Through the above structural design, two nested arc-shaped positioning components are used. The first arc-shaped positioning component 24 is used to fix the second arc-shaped positioning component 25 and limit the deformation of the second arc-shaped positioning component 25. The second arc-shaped positioning component 25 can accommodate the small-amplitude swing of the positioning post 22, making it easier to insert the positioning post 22. After insertion, under the elastic force of the spring 26, the second arc-shaped positioning component 25 is pushed towards the center, which promotes the positioning post 22 to move towards the center of the first arc-shaped positioning component 24, and corrects the position of the positioning post 22.

[0069] Example 6:

[0070] like Figures 4-7 As shown, based on the above embodiment 5, the second arc-shaped positioning member 25 is provided with a plurality of arc-shaped extension members 28 on the side away from the assembly workbench 3. The arc-shaped extension members 28 are provided with plug-in sleeves 29. The plug-in sleeves 29 on the plurality of arc-shaped extension members 28 are nested and slide relative to each other. The inner ring of the arc-shaped extension members 28 is provided with a plurality of friction pads 36, and the positioning post 22 contacts the friction pads 36.

[0071] The working principle and beneficial effects of the above technical solution are as follows:

[0072] Multiple arc-shaped extension members 28 are interlocked. As the distance from the second arc-shaped positioning member 25 increases, the diameter of the insertion sleeve 29 gradually decreases. The insertion sleeves 29 on each arc-shaped extension member 28 are sequentially inserted without separation. A friction pad 36 is provided on the inner side of the arc-shaped extension member 28. When the positioning post 22 is inserted to the center of the second arc-shaped positioning member 25, the positioning post 22 contacts the friction pad 36, and the friction force drives the arc-shaped extension member 28 to move. As the insertion depth of the positioning post 22 increases, the multiple arc-shaped extension members 28 are fully unfolded. The arc-shaped extension members 28 remain coaxially unfolded with the connection of the insertion sleeves 29.

[0073] Through the above structural design, the friction pads 36 of the arc-shaped extension members 28 at each position are in full contact with the positioning posts 22. During the insertion process of the positioning posts 22, the inertial force of the positioning posts 22 when they stop is converted into a driving force on the arc-shaped extension members 28. The friction pads 36 dampen the positioning posts 22, reducing the impact on the assembly workbench 3 when it moves into place, and achieving a stable stop. When the arc-shaped extension members 28 unfold, the position of the positioning posts 22 is corrected and positioned multiple times. The positioning posts 22 are located at the center of the arc-shaped extension members 28 and the second arc-shaped positioning member 25. When the second arc-shaped positioning member 25 resets to the center of the first arc-shaped positioning member 24, it drives the positioning posts 22 as a whole to be positioned towards the center of the positioning seat 23, reducing the local deformation of the positioning posts 22 at the second arc-shaped positioning member 25 and improving the positioning accuracy.

[0074] Example 7:

[0075] like Figures 4-7 As shown, based on the above embodiment 6, a magnetic positioning element 31 is also provided at the center of the positioning base 23. The magnetic positioning element 31 is arc-shaped and symmetrically arranged inside the positioning base 23. The magnetic positioning element 31 is located outside the arc-shaped extension 28. A first magnetic block 32 is uniformly arranged on the inner wall of the magnetic positioning element 31. A second magnetic block 33 is uniformly arranged on the outer wall of the arc-shaped extension 28. The first magnetic block 32 and the second magnetic block 33 are positioned correspondingly and have a repulsive force.

[0076] The working principle and beneficial effects of the above technical solution are as follows:

[0077] A magnetic positioning element 31 is centrally located on the positioning base 23. During the insertion of the positioning post 22, multiple arc-shaped extension elements 28 unfold and pass through the center of the magnetic positioning element 31. The magnetic positioning element 31 and the arc-shaped extension elements 28 generate a repulsive force, which reduces the moving speed of the positioning post 22 and achieves a shock absorption effect. On the other hand, the magnetic force on the magnetic positioning element 31 is uniform in all directions, and the force exerted on the arc-shaped extension elements 28 is equal at all points. When the arc-shaped extension elements 28 pass through the magnetic positioning element 31, they push the arc-shaped extension elements 29 towards the center of the magnetic positioning element 31, positioning each arc-shaped extension element 29 and the positioning post 22 to the center of the positioning base 23, realizing the correction of the positioning post 22 at various positions. Continuous magnetic correction can improve the automatic positioning effect of the positioning post 22 and prevent the post from shifting again after correction. The positioning method using a combination of magnetic positioning and friction pad 36 can reduce the collision and wear of the positioning post 22 during the positioning process and extend the service life of the positioning components.

[0078] Example 8:

[0079] like Figures 4-7 As shown, based on the above embodiment 7, a distance sensor is provided on the magnetic positioning member 31, and multiple sensing points are provided on the arc-shaped extension member 28. The distance sensor is used to detect the distance to the arc-shaped extension member 28.

[0080] The working principle and beneficial effects of the above technical solution are as follows:

[0081] A distance sensor is installed on the magnetic positioning component 31. When the arc-shaped extension component 28 passes the magnetic positioning component 31, the distance sensor identifies the sensing point, detects the distance to the arc-shaped extension component 28 at that point, and transmits the distance detection data to the controller. When the difference between the distance detection results on both sides is within a preset range, it indicates that the positioning of the positioning column 22 is effective and the position is accurate; when the difference between the distance detection results on both sides exceeds the preset range, it indicates that the positioning position of the positioning column 22 is deviated and further adjustment is required. This effectively realizes real-time monitoring of the positioning process and ensures effective positioning.

[0082] Example 9:

[0083] like Figure 7 As shown, based on the above embodiment 8, the inner wall of the arc-shaped extension member 28 is provided with multiple sets of friction frames. The friction frames include a bending frame 34, a ball seat 35 and a friction pad 36. One end of the bending frame 34 is connected to the inner wall of the arc-shaped extension member 28, and the other end is bent away from the assembly workbench 3. The ball seat 35 is connected to the bending frame 34, and a cavity is provided inside the ball seat 35. The friction pad 36 is set as an airbag pad, and the air inlet end of the friction pad 36 is connected to the cavity of the ball seat 35. An air pump 37 is installed on the positioning seat 23, and the air pump 37 is connected to the air inlet end of the cavity of the ball seat 35 through an air supply pipe 38.

[0084] The working principle and beneficial effects of the above technical solution are as follows:

[0085] An arc-shaped bend 34 is provided on the arc-shaped extension 28. The bending direction of the bend 34 is consistent with the moving direction of the positioning post 22, forming an inwardly constricted section to improve the contact effect between the friction pad 36 and the positioning post 22. During the positioning process, the air pump 37 is started to supply gas into the ball seat 35 through the air supply pipe 38, causing the friction pad 36 to expand and contact the positioning post 22, generating sufficient friction to ensure that the positioning post 22 drives the arc-shaped extension 28. The magnitude of the friction can be adjusted by adjusting the gas supply through the air pump 37. When the assembly workbench 3 is removed from the lifting platform 6, the pressure of the friction pad 36 is maintained first to allow the positioning post 22 to drive the arc-shaped extension 28 to move and reset, ensuring accurate positioning during the removal process; after the arc-shaped extension 28 is reset, the pressure in the ball seat 35 cavity is released, the friction pad 36 contracts and separates from the positioning post 22, allowing the positioning post 22 to move freely out.

[0086] Through the above structural design, the air pressure of the friction pad 36 can be effectively adjusted, and the friction connection between the friction pad 36 and the positioning post 22 can be realized during the positioning process. This ensures the synchronous unfolding and retraction of the arc-shaped extension piece 28 and improves the stability of the assembly workbench 3 during the process of moving into and out of the upgrade platform 6.

[0087] When the distance sensor detects a deviation in the positioning position of the positioning post 22, the pressure inside the cavities of the ball seats 35 on both sides can be adjusted to make the pressure of the friction pads 36 on both sides unequal, thereby adjusting the relative position of the positioning post 22 within the arc-shaped extension member 28, realizing secondary positioning adjustment of the positioning post 22, and improving the positioning effect.

[0088] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0089] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0090] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A welding torch assembly device based on a double-layer circulating conveyor, characterized in that, include: The upper conveyor belt (1) and the lower conveyor belt (2) travel in opposite directions. The upper conveyor belt (1) is set with multiple assembly stations in sequence along the travel direction. The upper conveyor belt (1) and the lower conveyor belt (2) are used to support the assembly workbench (3). The first elevator (4) and the second elevator (5) are set on both sides of the assembly station to transfer the assembly workbench (3) between the upper conveyor belt (1) and the lower conveyor belt (2); the first elevator (4) and the second elevator (5) are equipped with lifting platforms (6), and the lifting platforms (6) and the assembly workbench (3) are adapted to be equipped with automatic positioning units. The automatic positioning unit includes: Positioning post (22) is connected to the bottom of the assembly workbench (3) and is set horizontally; Positioning seat (23) is connected to the top of the lifting platform (6), and positioning column (22) is inserted into the positioning seat (23); the center of the positioning seat (23) is connected to a first arc-shaped positioning piece (24) and a second arc-shaped positioning piece (25), the two first arc-shaped positioning pieces (24) are symmetrically arranged at the center of the positioning seat (23), the second arc-shaped positioning piece (25) is nested inside the first arc-shaped positioning piece (24), a spring (26) is connected between the first arc-shaped positioning piece (24) and the second arc-shaped positioning piece (25), and the side of the second arc-shaped positioning piece (25) near the assembly workbench (3) is provided with an outwardly expanding transition surface (27), and positioning column (22) is inserted into the second arc-shaped positioning piece (25); The second arc-shaped positioning component (25) has multiple arc-shaped extension components (28) on the side away from the assembly workbench (3). The arc-shaped extension components (28) are provided with plug-in sleeves (29). The plug-in sleeves (29) on the multiple arc-shaped extension components (28) are nested and slide relative to each other. The inner ring of the arc-shaped extension component (28) is provided with multiple friction pads (36). The positioning post (22) contacts the friction pads (36). A magnetic positioning element (31) is also provided at the center of the positioning seat (23). The magnetic positioning element (31) is set in an arc shape and symmetrically arranged inside the positioning seat (23). The magnetic positioning element (31) is located outside the arc-shaped extension (28). A first magnetic block (32) is uniformly arranged on the inner wall of the magnetic positioning element (31). A second magnetic block (33) is uniformly arranged on the outer wall of the arc-shaped extension (28). The first magnetic block (32) and the second magnetic block (33) are in corresponding positions and have a repulsive force.

2. The welding torch assembly equipment based on double-layer circulating conveying according to claim 1, characterized in that, The assembly station includes the gun head locking station (11), the switch welding station (12), the thermoplastic station (13), and the screw locking station (10), which are arranged in sequence.

3. The welding torch assembly equipment based on double-layer circulating conveying according to claim 1, characterized in that, The first elevator (4) includes: Two drive screws (14) are symmetrically arranged inside the first elevator (4). The top of the drive screw (14) is connected to the transmission box (15), which is installed on the inner wall of the first elevator (4). Two threaded sleeves (19) are provided at one end of the lifting platform (6), and the two threaded sleeves (19) are screwed onto the drive screws (14) respectively. The drive shaft (16) is connected to two transmission boxes (15) at both ends, and a first pulley is installed in the middle of the drive shaft (16). The lifting motor (18) is installed at the bottom of the first lifting machine (4). The output shaft of the lifting motor (18) is connected to the second pulley, which is connected to the first pulley via a synchronous belt (17).

4. The welding torch assembly equipment based on double-layer circulating conveying according to claim 3, characterized in that, The first elevator (4) also includes: A transverse conveyor belt (21) is set on both sides of the lifting platform (6). The width of the transverse conveyor belt (21) is equal to that of the upper conveyor belt (1) and the lower conveyor belt (2).

5. The welding torch assembly equipment based on double-layer circulating conveying according to claim 1, characterized in that, A distance sensor is provided on the magnetic positioning component (31), and multiple sensing points are provided on the arc-shaped extension component (28). The distance sensor is used to detect the distance to the arc-shaped extension component (28).

6. The welding torch assembly equipment based on double-layer circulating conveying according to claim 1, characterized in that, The inner wall of the arc-shaped extension (28) is provided with multiple sets of friction frames, including a bending frame (34), a ball seat (35) and a friction pad (36). One end of the bending frame (34) is connected to the inner wall of the arc-shaped extension (28), and the other end is bent away from the assembly workbench (3). The ball seat (35) is connected to the bending frame (34), and a cavity is provided inside the ball seat (35). The friction pad (36) is set as an airbag, and the air inlet end of the friction pad (36) is connected to the cavity of the ball seat (35). An air pump (37) is installed on the positioning seat (23), and the air pump (37) is connected to the air inlet end of the cavity of the ball seat (35) through the air supply pipe (38).

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