Welding gun assembling equipment based on double-layer circulating conveying

Abstract

The invention relates to the technical field of welding gun assembling, and discloses welding gun assembling equipment based on double-layer circulating conveying, which comprises an upper-layer conveying belt and a lower-layer conveying belt with opposite advancing directions, the upper-layer conveying belt is sequentially provided with a plurality of assembling stations along the advancing direction, and the upper-layer conveying belt and the lower-layer conveying belt are used for bearing an assembling workbench; the first lifting machine and the second lifting machine are arranged on the two sides of the assembling station and used for transferring the assembling workbench between the upper-layer conveying belt and the lower-layer conveying belt; lifting platforms are arranged on the first lifting machine and the second lifting machine, and automatic positioning units are adaptively arranged on the lifting platforms and the assembling workbench. Automatic backflow of the assembly workbench is achieved in a double-layer circulation conveying mode, manual carrying is not needed, the occupied space of equipment is reduced through the upper-lower double-layer design, the conveying belt and the lifting machine are jointly controlled, automatic positioning is achieved in the transferring process, the positioning precision of the assembly workbench during circulation is improved, and the position accuracy of the welding gun in the assembly process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of welding gun assembly, and more particularly to welding gun assembly equipment based on double-layer circulation conveying. Background Art

[0002] Welding gun production requires the assembly of various components. Prior art, such as Chinese Patent Publication No. CN210060915U, discloses an integrated resistance spot welding gun assembly fixture. The fixture comprises a fixed base, a fixed plate, a positioning block, and a clamping mechanism. The positioning block is positioned within a hanging hole in the welding gun component to suspend the welding gun component, while the clamping mechanism is used to clamp the welding gun component within the hanging hole. By clamping the welding gun component to the assembly fixture, workers can more easily assemble the welding gun components by following the fixture's clamping guidelines.

[0003] However, in actual use, the assembly steps of existing air-cooled welding guns include locking the gun head, soldering the switch, thermoplastic wrapping the heat shrink tubing, and screwing the gun head handle. During the assembly process, the assembly workbench needs to be moved between various workstations to perform each assembly step. Using this simple assembly tool requires manual transfer during the assembly process, and repeated positioning after moving between workstations, resulting in low assembly efficiency and uncertain positioning accuracy during assembly.

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

[0005] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential 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 gun assembly device based on double-layer circulation conveying, comprising:

[0007] An upper conveyor belt and a lower conveyor belt running in opposite directions, wherein a plurality of assembly stations are sequentially arranged on the upper conveyor belt along the running direction, and the upper conveyor belt and the lower conveyor belt are used to carry the assembly workbench;

[0008] The first elevator and the second elevator are arranged on both sides of the assembly station, and are used to transfer the assembly workbench between the upper conveyor belt and the lower conveyor belt; the first elevator and the second elevator are provided with a lifting platform, and the lifting platform and the assembly workbench are adapted to be provided with automatic positioning units.

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

[0010] Preferably, the first elevator comprises:

[0011] Transmission screws, two transmission screws are symmetrically arranged in the first elevator, the top ends of the transmission screws are connected to the transmission box, and the transmission box is installed on the inner wall of the first elevator; two screw sleeves are provided at one end of the lifting platform, and the two screw sleeves are respectively screwed on the transmission screws;

[0012] The transmission shaft has two ends connected to the two transmission boxes at the same time, and the middle of the transmission shaft is equipped with a first pulley;

[0013] The lifting motor is installed at the bottom end of the first elevator. The output shaft of the lifting motor is connected to a second pulley, and the second pulley is connected to the first pulley through a synchronous belt.

[0014] Preferably, the first elevator further comprises:

[0015] Transverse conveyor belt: The transverse conveyor belt is arranged on both sides of the lifting platform. The width of the transverse conveyor belt is equal to that of the upper conveyor belt and the lower conveyor belt.

[0016] Preferably, the automatic positioning unit comprises:

[0017] The positioning column is connected to the bottom end of the assembly workbench and is 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, a first arc-shaped positioning member and a second arc-shaped positioning member are connected to the center of the positioning seat, the two first arc-shaped positioning members are symmetrically arranged at the center of the positioning seat, the second arc-shaped positioning member is nested inside the first arc-shaped positioning member, a spring is connected between the first arc-shaped positioning member and the second arc-shaped positioning member, and an outward-expanding transition surface is provided on the side of the second arc-shaped positioning member close to the assembly workbench, and the positioning column is inserted into the second arc-shaped positioning member.

[0020] Preferably, a plurality of arc-shaped extension members are provided on the side of the second arc-shaped positioning member away from the assembly workbench, and a plug-in sleeve is provided on the arc-shaped extension member. The plug-in sleeves on the plurality of arc-shaped extension members are nested and slide relative to each other; a plurality of friction pads are provided on the inner ring of the arc-shaped extension member, and the positioning column is in contact with the friction pad.

[0021] Preferably, a magnetic positioning part is also provided in the center of the positioning seat. The magnetic positioning part is arranged in an arc shape and symmetrically arranged in the positioning seat. The magnetic positioning part is located on the outside of the arc-shaped extending part; the inner wall of the magnetic positioning part is evenly provided with a first magnetic block; the outer wall of the arc-shaped extending part is evenly provided with a second magnetic block, and the first magnetic block and the second magnetic block correspond in position and have a repulsive force.

[0022] Preferably, a distance sensor is provided on the magnetic positioning member, and a plurality of sensing points are provided on the arc-shaped extension member, and the distance sensor is used to detect the distance from the arc-shaped extension member.

[0023] Preferably, multiple groups of friction frames are provided on the inner wall of the arc-shaped extension member, and the friction frames include a bent frame, a ball seat and a friction pad. One end of the bent frame is connected to the inner wall of the arc-shaped extension member, and the other end is bent toward the side away from the assembly workbench; the ball seat is connected to the bent frame, and a cavity is provided in the ball seat; the friction pad is provided 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 pipe.

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

[0025] The present invention provides a welding gun assembly equipment based on double-layer circular conveying. The double-layer circular conveying method is adopted, so that the assembly workbench moves along with the upper conveyor belt to assemble the welding gun. After the assembly is completed, the finished product is taken out at the elevator and transferred to the lower conveyor belt under the drive of the elevator. The automatic reflow of the assembly workbench is realized with the movement of the lower conveyor belt, and no manual handling is required. 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, thereby improving the positioning accuracy of the assembly workbench during circulation and ensuring the accuracy of the position during the welding gun assembly process.

[0026] The welding gun assembly equipment based on double-layer circulation conveying described in the present invention, other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technical personnel in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 Schematic diagram of the structure of the first elevator in the present invention;

[0030] Figure 3 Schematic diagram of the structure of the lifting platform in the present invention;

[0031] Figure 4 It is a structural schematic diagram of the positioning seat and the positioning column in the present invention;

[0032] Figure 5 It is a schematic diagram of the partial structure of one side of the positioning seat in the present invention;

[0033] Figure 6 Schematic diagram of the structure of the arc-shaped extension member in the present invention;

[0034] Figure 7 It is a schematic diagram of the local structure of the friction frame in the present invention.

[0035] In the figure: 1. Upper conveyor belt; 2. Lower conveyor belt; 3. Assembly workbench; 4. First elevator; 5. Second elevator; 6. Lifting platform; 10. Screw locking station; 11. Gun head locking station; 12. Switch welding station; 13. Thermoplastic station; 14. Drive screw; 15. Drive box; 16. Drive 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 member; 25. Second arc-shaped positioning member; 26. Spring; 27. Transition surface; 28. Arc-shaped extension member; 29. ​​Plug sleeve; 31. Magnetic positioning member; 32. First magnetic block; 33. Second magnetic block; 34. Bending frame; 35. Ball seat; 36. Friction pad; 37. Air pump; 38. Air pipe. DETAILED DESCRIPTION

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

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

[0038] Example 1:

[0039] like Figure 1-Figure 3 As shown, the present invention provides a welding gun assembly device based on double-layer circulation conveying, comprising:

[0040] An upper conveyor belt 1 and a lower conveyor belt 2 running in opposite directions, wherein the upper conveyor belt 1 is provided with a plurality of assembly stations in sequence along the running direction, and the upper conveyor belt 1 and the lower conveyor belt 2 are used to carry an assembly workbench 3;

[0041] The first elevator 4 and the second elevator 5 arranged 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 provided with a lifting platform 6, and the lifting platform 6 and the assembly workbench 3 are adapted to be provided with automatic positioning units.

[0042] The assembly stations include 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:

[0044] The present invention provides a welding gun assembly equipment based on double-layer circular conveying. During assembly, the welding gun structural parts to be assembled are placed on the assembly workbench 3, the assembly workbench 3 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, and as the upper conveyor belt 1 moves, the assembly workbench 3 passes through the gun head locking station 11, the switch welding station 12, the thermoplastic station 13 and the screw locking station 10 in sequence to complete the assembly of the welding gun; the assembled welding gun is placed on the assembly workbench 3, the upper conveyor belt 1 transfers the assembly workbench 3 to the lifting platform 6 of the second elevator 5, and the staff can take out the assembled welding gun; the second elevator 5 drives the lifting platform 6 to descend so that it is opposite to the lower conveyor belt 2, transfers the assembly workbench 3 to the lower conveyor belt 2, and finally moves with the lower conveyor belt 2 to transport the assembly workbench 3 back to the first elevator 4 to realize circulation.

[0045] Through the above structural design, a double-layer circular conveying method is adopted, so that the assembly workbench 3 moves along with the upper conveyor belt 1 to assemble the welding gun. After the assembly is completed, the finished product is taken out at the elevator and transferred to the lower conveyor belt 2 under the drive of the elevator. The automatic reflow of the assembly workbench 3 is realized as the lower conveyor belt 2 moves, and no manual handling is required. 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, thereby improving the positioning accuracy of the assembly workbench 3 during circulation and ensuring the accuracy of the position of the welding gun 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] Transmission screws 14, two transmission screws 14 are symmetrically arranged in the first elevator 4, the top of the transmission 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 screw sleeves 19 are provided at one end of the lifting platform 6, and the two screw sleeves 19 are respectively screwed on the transmission screws 14;

[0049] The transmission shaft 16 has two ends connected to the two transmission boxes 15 at the same time, and a first pulley is installed in the middle of the transmission shaft 16;

[0050] The lifting motor 18 is installed at the bottom end of the first elevator 4. The output shaft of the lifting motor 18 is connected to a second pulley, and the second pulley is connected to the first pulley through a synchronous belt 17.

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

[0052] When the first elevator 4 is in use, the lift motor 18 is activated to rotate the second pulley. This second pulley forms a belt drive with the first pulley via a timing belt 17, causing the drive shaft 16 to rotate synchronously. Drive shaft 16, after power conversion via the transmission boxes 15 on both sides, drives the drive screw 14 to rotate, thereby driving the lift platform 6 in the vertical direction. The lift platform 6 is raised and lowered by rotating the lift motor 18 in both directions, moving it 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] The transverse conveyor belt 21 is arranged on both sides of the lifting platform 6. The transverse conveyor belt 21 has the same width as the upper conveyor belt 1 and the lower conveyor belt 2.

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

[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 is moved forward to transport the assembly workbench 3 to the upper conveyor belt 1, achieving horizontal loading and transverse movement of the assembly workbench 3. After assembly is completed, 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 is moved to transport the assembly workbench 3 to the transverse conveyor belt 21. The lifting platform 6 is then lowered and transferred to the lower conveyor belt 2.

[0058] By cooperating with the transverse conveyor belt 21 and 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 assembly workbench 3 from piling up at the finished product outlet.

[0059] Example 4:

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

[0061] A positioning column 22 is connected to the bottom end of the assembly workbench 3 and is arranged horizontally;

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

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

[0064] The lifting platform 6 and the assembly workbench 3 are provided 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, and the positioning column 22 at the bottom of the assembly workbench 3 is gradually inserted into the positioning seat 23. The two are plugged into each other 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 cooperating with another layer of conveyor belt after lifting, thereby ensuring the accuracy of the position during the assembly process.

[0065] Example 5:

[0066] like Figure 4-Figure 7 As shown, on the basis of the above-mentioned embodiment 4, the center of the positioning seat 23 is connected to the first arc-shaped positioning member 24 and the second arc-shaped positioning member 25, the two first arc-shaped positioning members 24 are symmetrically arranged at the center of the positioning seat 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, and the second arc-shaped positioning member 25 is provided with an outward-expanding transition surface 27 on the side close to the assembly workbench 3, and the positioning column 22 is inserted into the second arc-shaped positioning member 25.

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

[0068] A first arc-shaped locating member 24 and a second arc-shaped locating member 25 are nested and connected at the center of the locating seat 23 via a spring 26. The locating members are symmetrically arranged at the center of the locating seat 23. When the assembly workbench 3 is moved onto the lifting platform 6 and the locating post 22 is inserted into the locating seat 23, the two second arc-shaped locating members 25 can be clamped on either side of the locating post 22. If the position of the assembly workbench 3 shifts, causing the locating post 22 to deviate from the position of the locating seat 23, the locating post 22 can slide along the transition surface 27 to the center of the two second arc-shaped locating members 25. Simultaneously, under the action of the spring 26, the second arc-shaped locating member 25 can deform slightly to adapt to the position of the locating post 22, facilitating the insertion of the locating post 22 between the two second arc-shaped locating members 25. Through the above-mentioned structural design, two nested arc-shaped positioning members are adopted, and the first arc-shaped positioning member 24 is used to fix the second arc-shaped positioning member 25, thereby limiting the deformation of the second arc-shaped positioning member 25; the second arc-shaped positioning member 25 can adapt to the small swing of the positioning column 22, making the positioning column 22 easier to plug in. After plugging in, under the elastic force of the spring 26, the second arc-shaped positioning member 25 is pushed toward the center, thereby promoting the positioning column 22 to move toward the center of the first arc-shaped positioning member 24, thereby correcting the position of the positioning column 22.

[0069] Example 6:

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

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

[0072] Multiple arc-shaped extensions 28 are interlocked. As the distance from the second arc-shaped positioning member 25 increases, the diameter of the insertion sleeve 29 gradually decreases, allowing the insertion sleeves 29 on each arc-shaped extension 28 to be sequentially inserted and prevented from separating. A friction pad 36 is positioned inside each arc-shaped extension 28. When the positioning post 22 is inserted into the center of the second arc-shaped positioning member 25, the post 22 contacts the friction pad 36, driving the arc-shaped extension 28 under friction. As the insertion depth of the positioning post 22 increases, the multiple arc-shaped extensions 28 are fully extended. Connected by the insertion sleeve 29, the arc-shaped extensions 28 remain coaxially extended.

[0073] Through the above-described structural design, the friction pads 36 of the arc-shaped extension member 28 at each position fully contact the positioning column 22. During the insertion process of the positioning column 22, the inertial force of the positioning column 22 when it stops is converted into a driving force for the arc-shaped extension member 28. The friction pads 36 dampen the positioning column 22, reducing the impact on the assembly workbench 3 when it is moved into position, and achieving a stable stop. When the arc-shaped extension member 28 is deployed, the position of the positioning column 22 is corrected and positioned multiple times. The positioning column 22 is located at the center of the arc-shaped extension member 28 and the second arc-shaped positioning member 25. When the second arc-shaped positioning member 25 returns to the center of the first arc-shaped positioning member 24, it drives the positioning column 22 as a whole to the center of the positioning seat 23, reducing local deformation of the positioning column 22 at the second arc-shaped positioning member 25 and improving positioning accuracy.

[0074] Example 7:

[0075] like Figure 4-Figure 7 As shown, on the basis of the above-mentioned embodiment 6, a magnetic positioning member 31 is further provided at the center of the positioning seat 23. The magnetic positioning member 31 is configured to be arc-shaped and symmetrically arranged in the positioning seat 23. The magnetic positioning member 31 is located on the outside of the arc-shaped extension member 28. The inner wall of the magnetic positioning member 31 is evenly provided with a first magnetic block 32. The outer wall of the arc-shaped extension member 28 is evenly provided with a second magnetic block 33. The first magnetic block 32 and the second magnetic block 33 correspond in position and have a repulsive force.

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

[0077] A magnetic locator 31 is positioned at the center of the positioning seat 23. During the insertion of the positioning post 22, the multiple curved extensions 28 are driven to unfold and pass through the center of the magnetic locator 31. This repulsive force between the magnetic locator 31 and the curved extensions 28 reduces the movement speed of the positioning post 22, providing a shock-absorbing and buffering effect. Furthermore, the magnetic force on the magnetic locator 31 is uniform in all directions, exerting equal force on all parts of the curved extensions 28. As the curved extensions 28 pass through the magnetic locator 31, the curved extensions 29 are pushed toward the center of the magnetic locator 31, positioning each curved extension 29 and the positioning post 22 at the center of the positioning seat 23, achieving deviation correction for each position of the positioning post 22. Continuous magnetic correction can improve the automatic positioning of the positioning post 22 and prevent further deviation after correction. The combined positioning method of magnetic positioning and friction pad 36 can minimize collision and wear on the positioning post 22 during the positioning process, extending the service life of the positioning components.

[0078] Example 8:

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

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

[0081] A distance sensor is mounted on the magnetic positioning member 31. When the curved extension member 28 passes the magnetic positioning member 31, the distance sensor identifies the sensing point, measures the distance to the curved extension member 28 at that point, and transmits the distance detection data to the controller. When the difference between the two distance detection results is within a preset range, the positioning column 22 is effectively positioned and accurately positioned. When the difference between the two distance detection results exceeds the preset range, the positioning column 22 is deviating and requires further adjustment. This effectively enables real-time monitoring of the positioning process, ensuring effective positioning.

[0082] Example 9:

[0083] like Figure 7 As shown, on the basis of the above-mentioned embodiment 8, a plurality of friction frames are provided on the inner wall of the arc-shaped extension member 28, and the friction frames include a bent frame 34, a ball seat 35 and a friction pad 36. One end of the bent frame 34 is connected to the inner wall of the arc-shaped extension member 28, and the other end is bent toward the side away from the assembly workbench 3; the ball seat 35 is connected to the bent frame 34, and a cavity is provided in the ball seat 35; the friction pad 36 is provided 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 pipe 38.

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

[0085] An arc-shaped bend 34 is provided on the arc-shaped extension member 28. The bend 34 curves in the same direction as the positioning post 22 and forms an inwardly directed contraction to improve contact between the friction pad 36 and the positioning post 22. During the positioning process, an air pump 37 is activated to deliver gas into the ball seat 35 through the air 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 member 28. The friction force can be adjusted by adjusting the gas supply from the air pump 37. When the assembly workbench 3 is removed from the lifting platform 6, pressure on the friction pad 36 is maintained to allow the positioning post 22 to move and reset the arc-shaped extension member 28, ensuring accurate positioning during removal. Once the arc-shaped extension member 28 is reset, the pressure in the ball seat 35 is relieved, causing the friction pad 36 to contract and separate from the positioning post 22, allowing the positioning post 22 to move freely.

[0086] Through the above-mentioned 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 column 22 can be achieved during the positioning process, thereby ensuring the synchronous expansion and contraction of the arc-shaped extension member 28 and improving the stability of the assembly workbench 3 during the process of moving in and out of the upgrade platform 6.

[0087] When the distance sensor detects the positioning position deviation of the positioning column 22, the pressure in the cavity of the ball seat 35 on both sides can be adjusted to make the pressure of the friction pads 36 on both sides unequal, and the relative position of the positioning column 22 in the arc-shaped extension member 28 can be adjusted to achieve secondary positioning adjustment of the positioning column 22 and improve the positioning effect.

[0088] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0089] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0090] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A welding gun assembly device based on double-layer circulation conveying, characterized in that: include: An upper conveyor belt (1) and a lower conveyor belt (2) running in opposite directions, the upper conveyor belt (1) being provided with a plurality of assembly stations in sequence along the running direction, and the upper conveyor belt (1) and the lower conveyor belt (2) being used to carry an assembly workbench (3); A first elevator (4) and a second elevator (5) are arranged on both sides of the assembly station and are used to transfer the assembly workbench (3) between the upper conveyor belt (1) and the lower conveyor belt (2); a lifting platform (6) is arranged on the first elevator (4) and the second elevator (5), and an automatic positioning unit is adapted to be arranged on the lifting platform (6) and the assembly workbench (3).

2. The welding gun assembly equipment based on double-layer circulation conveying according to claim 1 is characterized in that: The assembly station comprises 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.

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

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

5. The welding gun assembly equipment based on double-layer circulation conveying according to claim 4 is characterized in that: The automatic positioning unit includes: A positioning column (22), the positioning column (22) is connected to the bottom end of the assembly workbench (3), and the positioning column (22) is horizontally arranged; The positioning seat (23) is connected to the top of the lifting platform (6), and the positioning column (22) is inserted into the positioning seat (23).

6. The welding gun assembly equipment based on double-layer circulation conveying according to claim 5 is characterized in that: A first arc-shaped positioning piece (24) and a second arc-shaped positioning piece (25) are connected to the center of the positioning seat (23); 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); a transition surface (27) that expands outward is provided on a side of the second arc-shaped positioning piece (25) close to the assembly workbench (3); and the positioning column (22) is inserted into the second arc-shaped positioning piece (25).

7. The welding gun assembly equipment based on double-layer circulation conveying according to claim 6 is characterized in that: A plurality of arc-shaped extension members (28) are provided on a side of the second arc-shaped positioning member (25) away from the assembly workbench (3), and a plug-in sleeve (29) is provided on the arc-shaped extension member (28). The plug-in sleeves (29) on the plurality of arc-shaped extension members (28) are nested and slide relatively; a plurality of friction pads (36) are provided on the inner ring of the arc-shaped extension member (28), and the positioning column (22) contacts the friction pad (36).

8. The welding gun assembly equipment based on double-layer circulation conveying according to claim 7 is characterized in that: A magnetic positioning member (31) is further provided at the center of the positioning seat (23). The magnetic positioning member (31) is arranged in an arc shape and is symmetrically arranged in the positioning seat (23). The magnetic positioning member (31) is located outside the arc-shaped extension member (28). First magnetic blocks (32) are evenly provided on the inner wall of the magnetic positioning member (31). Second magnetic blocks (33) are evenly provided on the outer wall of the arc-shaped extension member (28). The first magnetic blocks (32) and the second magnetic blocks (33) are positioned correspondingly and have a repulsive force.

9. The welding gun assembly equipment based on double-layer circulation conveying according to claim 8 is characterized in that: A distance sensor is provided on the magnetic positioning member (31), and a plurality of sensing points are provided on the arc-shaped extension member (28). The distance sensor is used to detect the distance from the arc-shaped extension member (28).

10. The welding gun assembly equipment based on double-layer circulation conveying according to claim 7, characterized in that: The inner wall of the arc-shaped extension member (28) is provided with a plurality of friction frames, the friction frames including a bent frame (34), a ball seat (35) and a friction pad (36), one end of the bent frame (34) is connected to the inner wall of the arc-shaped extension member (28), and the other end is bent toward a side away from the assembly workbench (3); the ball seat (35) is connected to the bent frame (34), and a cavity is provided in the ball seat (35); the friction pad (36) is provided as an airbag pad, and the air inlet end of the friction pad (36) is communicated with the cavity of the ball seat (35); an air pump (37) is installed on the positioning seat (23), and the air pump (37) is communicated with the air inlet end of the cavity of the ball seat (35) through an air pipe (38).

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