Tool for welding pole of battery cover plate

Abstract

The invention relates to the technical field of tools for welding, in particular to a tool for welding a battery cover plate pole. Comprising a base, a connecting frame is fixedly connected to the base, the connecting frame is rotationally connected with a fixing frame, second motors which are symmetrically distributed are fixedly connected to the base, output shafts of the second motors are fixedly connected with an adjusting frame, an electric lifting frame is installed on the adjusting frame, and a guide rod is arranged on the electric lifting frame; the guide rod is slidably connected with an extrusion rod, a spring is fixedly connected between the extrusion rod and the guide rod, the extrusion rod is slidably connected with a supporting shell, the supporting shell is hinged to a rotating frame distributed in the circumferential direction, the rotating frame is provided with a threaded rod, and the threaded rod is fixedly connected with a positioning frame. Before the battery cover plate and the pole are pressed, the rotating frame drives the positioning frame to move, so that the positioning frame is in contact with the adjacent positions of the pole and the cover plate mounting groove at the same time, the relative positions of the pole and the cover plate are adjusted, and the center of the pole is aligned with the center of the cover plate mounting groove.

Description

Technical Field

[0001] The present invention relates to the technical field of welding tooling, and in particular to a tooling for welding a battery cover plate pole. Background Art

[0002] The battery cover consists of a cover, a terminal, and a sealing ring. The sealing ring is located between the terminal and the cover to seal them together. During the battery cover assembly process, the sealing ring must be placed in place first, and then the terminal is placed into the corresponding mounting groove of the cover body. The terminal and the cover body are then pressed together using a welding tool to ensure a tight fit between the adjacent contact areas. Finally, welding is performed using a welding device.

[0003] To facilitate the placement of the pole into the mounting groove of the cover body, the aperture of the mounting groove in existing designs is usually slightly larger than the diameter of the pole, forming a certain assembly gap. The existence of this assembly gap makes it easy for the pole to shift in position due to vibration and inertia during subsequent transportation or handling, resulting in misalignment between the pole and the cover body.

[0004] However, the existing welding tooling lacks an effective guiding or positioning mechanism, and is unable to fully correct the position of the offset pole during the pressing process. This results in the offset pole and the cover body being unable to be completely concentric or aligned in the welding area, which in turn causes uneven compression of the sealing ring in the circumferential direction. This unevenness makes it easier for the high temperature generated during the welding process to be transferred to the sealing ring through the close contact area, causing local melting and damage to the sealing ring, and ultimately destroying the sealing performance between the pole and the cover body. Summary of the Invention

[0005] The present invention provides a tool for welding a battery cover plate pole, which is used to solve the problems raised in the above background.

[0006] The technical implementation scheme of the present invention is: a tool for welding a battery cover plate pole, comprising a base, a connecting frame fixed on the base, a first motor fixed in the base, the output shaft of the first motor passing through the connecting frame, the connecting frame rotatably connected to a fixed frame fixed to the output shaft of the first motor, a symmetrically distributed second motor fixed on the base, the output shaft of the second motor fixed to an adjustment frame rotatably connected to the connecting frame, the adjustment frame is installed with an electric lifting frame, the electric lifting frame is provided with a guide rod, the guide rod is slidably connected to an extrusion rod, and a spring is fixed therebetween, the extrusion rod is slidably connected to a support shell, the support shell is hinged with a circumferentially distributed rotating frame, a threaded rod is provided on the rotating frame, the threaded rod is fixed to a positioning frame, the positioning frame is used to adjust the position of the cover plate and the pole, the guide rod is provided with circumferentially distributed adjustment components and the same number as the adjacent rotating frames, the adjustment components are used to drive the adjacent rotating frames to rotate, and the fixed frame is provided with a fixing component for limiting the moving distance of the rotating frame.

[0007] Further description, the positioning frame is provided with a first guide surface and a second guide surface, the first guide surface is located on the side of the positioning frame away from the support shell, and the first guide surface is used to push the cover plate to move, and the second guide surface is located on the side of the positioning frame close to the support shell, and the second guide surface is used to push the pole to move.

[0008] Further description, the adjustment assembly includes an extrusion plate, which is fixed to the adjacent guide rod, and the extrusion plate is provided with a rectangular hole. The upper part of the rotating frame is fixed with a transmission plate, and the upper part of the transmission plate is deflected toward the axial direction of the adjacent extrusion rod. The upper part of the transmission plate is located in the adjacent rectangular hole. The extrusion plate is used to push the transmission plate to rotate. A torsion spring is fixed between the rotating frame and the adjacent support shell, and the extrusion plate is slidably connected to the adjacent support shell.

[0009] It is further explained that the lower portion of the extrusion plate contacts the adjacent transmission plate to limit the rotation of the transmission plate.

[0010] Further description, the fixing assembly includes support rings distributed in a rectangular shape, all of the support rings are fixed to the fixing frame, the support rings are used to support the cover plate, the lower part of the rotating frame is fixed with a support block, the support block is located above the adjacent support rings, and the support block is used to limit the movement distance of the adjacent rotating frames.

[0011] It is further explained that circumferentially distributed guide balls are provided on one side of the positioning frame close to the axis of the adjacent guide rod.

[0012] It is further explained that the rotating frame is threadedly connected to the adjacent threaded rod, and the axis of the threaded rod is deflected from top to bottom toward the direction of the axis of the extrusion rod.

[0013] Further explanation, it also includes symmetrically distributed limit components, which are respectively arranged on adjacent electric lifting frames. The limit components are used to limit the position of the electric lifting frames and the adjacent guide rods. The limit components include a circular plate, which is rotatably connected to the guide rod. A tension spring is fixed between the circular plate and the adjacent electric lifting frames. Circumferentially distributed splines are fixed on the guide rod, and the splines slide along the adjacent electric lifting frames. The guide rod is slidably and rotatably connected to the electric lifting frames.

[0014] It is further explained that the elastic coefficient of the tension spring is greater than the elastic coefficient of the spring.

[0015] Further explanation, it also includes a positioning component, which is arranged on the base, and the positioning component is used to limit the position of the sealing ring between the battery cover and the pole. The positioning component includes an electric push rod, which is fixed to the base, and the telescopic end of the electric push rod is slidably connected to the connecting frame. The telescopic end of the electric push rod is fixed to a support plate, and the support plate is used to support the fixing frame. The support plate is fixed with symmetrically distributed positioning rods, and the fixing frame is provided with rectangularly distributed through holes, which are used for the positioning rods to pass through the fixing frame, and the positioning rods are used to limit the position of the sealing ring.

[0016] The advantages and positive effects of the present invention compared with the prior art are: 1. Before pressing the battery cover and the pole, the present invention drives the positioning frame to move by the rotating frame, so that the positioning frame contacts the adjacent positions of the pole and the cover installation groove at the same time, and then adjusts the relative position of the pole and the cover so that the center of the pole is aligned with the center of the cover installation groove, thereby reducing the position deviation between the pole and the cover installation groove, ensuring the sealing performance after the sealing ring is installed, and improving the quality of welding of the pole and the cover.

[0017] 2. In the process of pressing the battery cover and the pole, the present invention fixes the transmission plate by the extrusion plate, so that the positions of the rotating frame and the positioning frame remain stable. At the same time, the pole is guided by the guide ball to ensure that the position of the pole will not be offset due to the deformation of the sealing ring during the pressing process, thereby further improving the quality of the welding between the cover and the pole.

[0018] 3. The present invention drives the positioning rod to move upward through the support plate, so that the positioning rod enters the sealing ring, adjusts and fixes the position of the sealing ring, thereby reducing the probability of the sealing ring being displaced due to the movement of the pole during the process of adjusting the position of the pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the first motor, the fixing frame and the second motor of the present invention;

[0021] Figure 3 Schematic diagram of the three-dimensional structure of the electric push rod, support plate and positioning rod of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the adjustment frame, the electric lifting frame and the guide rod of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the circular plate, tension spring and spline of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the extrusion plate, transmission plate and torsion spring of the present invention;

[0025] Figure 7 A three-dimensional structural cross-sectional view of the rotating frame, positioning frame and transmission plate of the present invention;

[0026] Figure 8 It is an exploded view of the three-dimensional structure of the support shell, support ring and tension spring of the present invention.

[0027] The markings of the components in the accompanying drawings are as follows: 1-base, 2-connecting frame, 3-first motor, 4-fixed frame, 5-second motor, 6-adjusting frame, 7-electric lifting frame, 8-guide rod, 9-extrusion rod, 10-spring, 11-support shell, 12-rotating frame, 13-threaded rod, 14-positioning frame, 141-first guide surface, 142-second guide surface, 15-extrusion plate, 151-rectangular hole, 16-transmission plate, 17-torsion spring, 18-support ring, 181-support block, 19-guide ball, 20-circular plate, 21-tension spring, 22-spline, 23-electric push rod, 24-support plate, 25-positioning rod. DETAILED DESCRIPTION

[0028] The above scheme is further described below with reference to specific examples. It should be understood that these examples are intended to illustrate the present application and are not intended to limit the scope of the present application. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer. The implementation conditions not specified are generally those used in routine experiments.

[0029] Example 1: A battery cover plate pole welding tool, such as Figures 1-8As shown, it includes a base 1, a connecting frame 2 is fixed on the base 1, a first motor 3 is fixed in the base 1, the output shaft of the first motor 3 passes through the connecting frame 2, the connecting frame 2 is rotatably connected to a fixed frame 4 fixed to the output shaft of the first motor 3, a symmetrically distributed second motor 5 is fixed on the base 1, the output shaft of the second motor 5 is fixed to an adjusting frame 6 rotatably connected to the connecting frame 2, the adjusting frame 6 is installed with an electric lifting frame 7, the electric lifting frame 7 is provided with a guide rod 8, the guide rod 8 is slidably connected to an extrusion rod 9, and a spring 10 is fixed therebetween, the extrusion rod 9 is slidably connected to a supporting shell 11, the supporting shell 11 is hinged with a circumferentially distributed rotating frame 12, the rotating frame 12 is provided with a threaded rod 13, the threaded rod 13 is fixed to a positioning frame 14, the positioning frame 14 is used to adjust the position of the cover and the pole, the guide rod 8 is provided with circumferentially distributed adjusting components and the same number as the adjacent rotating frames 12, the adjusting components are used to drive the adjacent rotating frames 12 to rotate, and the fixed frame 4 is provided with a fixing component for limiting the moving distance of the rotating frame 12.

[0030] Further, such as Figure 6 and Figure 7 As shown, a first guide surface 141 and a second guide surface 142 are provided on the positioning frame 14. The first guide surface 141 is located on a side of the positioning frame 14 away from the support shell 11. The first guide surface 141 is used to push the cover plate to move. The second guide surface 142 is located on a side of the positioning frame 14 close to the support shell 11. The second guide surface 142 is used to push the pole to move.

[0031] The above scheme provides a way to adjust the position of the pole and the cover before welding, improve the welding accuracy and reduce the probability of damage to the sealing ring; the connecting frame 2 is located in the middle of the upper side of the base 1, the first motor 3 is located on the right side of the base 1, and the fixing frame 4 is located on the right side of the connecting frame 2 and rotates. There are two cover fixing positions on the fixing frame 4, and the two fixing positions are symmetrically distributed. When welding a group of cover plates and poles, the staff can simultaneously place a new group of cover plates and poles on the other side of the fixing frame 4. The first motor 3 is used to drive the fixing frame 4 to rotate and adjust the position of the two cover fixing positions on the fixing frame 4; there are two second motors 5, both located on the left side of the base 1, and the electric lifting frame 7 It is L-shaped, and the right part of its upper end is located above the adjacent pole mounting groove on the cover plate. The electric lifting frame 7 is an existing device, and the specific structure will not be described in detail. The electric lifting frame 7 is used to drive the guide rod 8 to move up and down. In this embodiment, the electric lifting frame 7 and the adjacent guide rod 8 can be regarded as fixedly connected. The extrusion rod 9 is located at the lower part of the guide rod 8. The lower part of the guide rod 8 is provided with a step surface for limiting the moving distance of the extrusion rod 9. The lower end of the extrusion rod 9 is provided with a pressure plate structure for increasing the contact area between it and the pole. The pressure plate structure is used to provide uniform pressure to the pole. The spring 10 is used to push the extrusion rod 9 to reset, and the spring 10 is always in a stored force state.

[0032] When not working, the support shell 11 is located at the lower part of the extrusion rod 9, and the outer diameter of the support shell 11 is smaller than the diameter of the upper side of the pole, which is used to make the lower side of the support shell 11 completely contact with the pole. In this article, the number of rotating frames 12 on the same support shell 11 is four, and the number of rotating frames 12 can be adjusted according to actual conditions when in use. When not working, the upper part of the rotating frame 12 is in a horizontal state, and the upper part of the rotating frame 12 is in contact with the upper side of the support shell 11, which is used to increase the stability of the position of the rotating frame 12. In this embodiment, the rotating frame 12 and the threaded rod 13 are fixedly connected, and there is no relative movement between the rotating frame 12 and the threaded rod 13. The positioning frame 14 is in a U-shape with an opening downward. Taking the shape of the right positioning frame 14 as an example, the right part of the positioning frame 14 The lower side of the positioning frame 14 is higher than the lower side of its left part, and is used to ensure that the positioning frame 14 contacts the pole and then contacts the mounting groove on the cover during the downward movement of the positioning frame 14. The positioning frame 14 is used to adjust the position of the battery cover and the pole. A guide rod 8 has four adjustment components. During the downward movement of the positioning frame 14, when the first guide surface 141 contacts the mounting groove on the cover, the first guide surface 141 squeezes the mounting groove to adjust the position of the cover in the fixed position on the fixing frame 4, so that the center of the mounting groove on the cover is aligned with the center of the guide rod 8, ensuring the uniform position of the cover. When the second guide surface 142 contacts the pole, the second guide surface 142 pushes the pole to move so that the center of the pole is aligned with the center of the guide rod 8.

[0033] Further, such as Figure 5-Figure 8 As shown, the adjustment assembly includes an extrusion plate 15, which is fixed to the adjacent guide rod 8. The extrusion plate 15 is provided with a rectangular hole 151. The upper part of the rotating frame 12 is fixed with a transmission plate 16. The upper part of the transmission plate 16 is tilted toward the axial direction of the adjacent extrusion rod 9. The upper part of the transmission plate 16 is located in the adjacent rectangular hole 151. The extrusion plate 15 is used to push the transmission plate 16 to rotate. A torsion spring 17 is fixed between the rotating frame 12 and the adjacent support shell 11, and the extrusion plate 15 is slidably connected to the adjacent support shell 11.

[0034] Further, such as Figure 6-Figure 8 As shown, the lower portion of the extrusion plate 15 contacts the adjacent transmission plate 16 to limit the rotation of the transmission plate 16 .

[0035] The above solution provides a method for making the rotating frame 12 no longer block the position of the welding point between the pole and the cover after the position of the pole is adjusted; the extrusion plate 15 is located at the lower end of the guide rod 8, and the support shell 11 is provided with four vertical slots. When not in operation, the lower part of the extrusion plate 15 is located in the adjacent vertical slots on the support shell 11, and the transmission plate 16 is located on the left side of the rotating frame 12 ( Figure 7For example), the transmission plate 16 is composed of a vertical plate and an inclined plate. The inclined plate of the transmission plate 16 is inclined to the upper left. The inclined plate of the transmission plate 16 is located in the rectangular hole 151. When not working, the lower part of the extrusion plate 15 is in contact with the transmission plate 16. The extrusion plate 15 limits the rotation of the transmission plate 16 to fix the position of the rotating frame 12. When the extrusion plate 15 moves downward, the extrusion plate 15 squeezes the inclined surface of the transmission plate 16, so that the transmission plate 16 drives the rotating frame 12 to rotate 90 degrees, thereby causing the rotating frame 12 to drive the parts on it to rotate. To avoid, an avoidance groove is provided on the support shell 11, which is used to vacate the position of the inclined plate on the transmission plate 16, and the torsion spring 17 is used to drive the rotating frame 12 to rotate and reset, and the torsion spring 17 is always in a stored force state; the lower part of the extrusion plate 15 is in contact with the transmission plate 16 to limit the adjacent transmission plate 16 during the process of pressing the cover plate and the pole, so that the position of the rotating frame 12 will not change, and the positioning frame 14 will always position and guide the pole during the process of pressing the pole and the cover plate, ensuring that the position of the pole will not shift.

[0036] Further, such as Figure 4-Figure 8 As shown, the fixing assembly includes support rings 18 distributed in a rectangular shape. All support rings 18 are fixed to the fixing frame 4. The support rings 18 are used to support the cover plate. The lower part of the rotating frame 12 is fixed with a support block 181. The support block 181 is located above the adjacent support rings 18. The support block 181 is used to limit the movement distance of the adjacent rotating frames 12.

[0037] Further, such as Figure 6-Figure 8 As shown, a circumferentially distributed guide ball 19 is provided on one side of the positioning frame 14 close to the axis of the adjacent guide rod 8 .

[0038] The above scheme provides a way to support the rotating frame 12 and stabilize the position of the positioning frame 14 in the process of pushing the pole to move downward; there are four support rings 18, and the four support rings 18 are all located on the upper side of the fixed frame 4. The inner diameter of the support ring 18 is larger than the outer diameter of the mounting groove on the cover plate. The support ring 18 is used to support the adjacent area outside the mounting groove on the cover plate. When not working, the support block 181 is parallel to the horizontal plane, and the support block 181 is located above the adjacent support ring 18. After the rotating frame 12 drives the support block 181 to move downward and contact the cover plate, the support ring 18 supports the support block 181 on the cover plate. The guide ball 19 is located on the inner side of the adjacent positioning frame 14. The guide ball 19 is used to separate the pole and the positioning frame 14. In the process of the extrusion rod 9 pushing the pole to move downward, the guide ball 19 is driven to rotate by the pole to reduce the friction between the pole and the positioning frame 14 when it moves downward.

[0039] Workflow: The following content takes the cover plate deflecting to the left and the pole offset to the right as an example. When using this tool to weld the battery cover plate and the pole, the staff first combines the cover plate, the sealing ring and the pole through the existing device, and then places the combined "battery cover plate" in the right fixed position on the fixing frame 4. The two mounting grooves of the cover plate are respectively located in the adjacent support rings 18. After the "battery cover plate" is placed, the staff starts the first motor 3, and the output shaft of the first motor 3 drives the fixing frame 4 to rotate. When the fixing frame 4 drives the "battery cover plate" to rotate 180°, the first motor 3 automatically turns off. At this time, the "battery cover plate" moves to the bottom of the two electric lifting frames 7. The staff starts the electric lifting frame 7, and the electric lifting frame 7 drives the guide rod 8 to move downward. The guide rod 8 drives the extrusion rod 9 and other parts thereon to move downward. The extrusion rod 9 drives the support shell 11 to move synchronously close to the pole in the corresponding position.

[0040] During the downward movement of the support shell 11, the support shell 11 drives the rotating frame 12 to move downward, and the rotating frame 12 drives the positioning frame 14 to move downward close to the "battery cover" through the threaded rod 13. At the same time, the rotating frame 12 drives the support block 181 thereon to move downward. When the second guide surface 142 on the right positioning frame 14 contacts the pole, the second guide surface 142 pushes the pole to move left to adjust the position of the pole. Until the second guide surface 142 separates from the pole, the positioning frame 14 completes the adjustment of the pole position. At this time, the four positioning frames 14 are all in contact with the pole. As the positioning frame 14 moves downward, the guide ball 19 contacts the pole. The pole drives the guide ball 19 to rotate and reduces the friction force when the positioning frame 14 and the pole move relative to each other. As the positioning frame 14 continues to move downward, when the first guide surface 141 on the right side contacts the mounting groove of the cover plate, the first guide surface 141 adjusts the position of the cover plate by squeezing the mounting groove of the cover plate, so that the cover plate is in the specified position. Until the four first guide surfaces 141 are in contact with the mounting groove of the cover plate, the cover plate position adjustment is completed, the positioning frame 14 stops moving, and since the lower part of the extrusion plate 15 contacts the transmission plate 16, the support shell 11 stops moving, so the rotating frame 12 stops moving and cannot rotate. At this time, the support shell 11 and the extrusion rod 9 are in contact with the upper side of the pole.

[0041] After the support shell 11 stops moving, the guide rod 8 drives the extrusion rod 9 to continue to move downward through the spring 10, so that the extrusion rod 9 pushes the pole to move downward relative to the support shell 11 and close to the battery cover. The lower part of the extrusion plate 15 gradually separates from the transmission plate 16. When the lower side of the pole contacts the battery cover, the two are pressed together, and the extrusion rod 9 stops moving. At this time, the lower part of the extrusion plate 15 separates from the transmission plate 16 and the limit is released. The upper side of the rectangular hole 151 contacts the transmission plate 16. As the guide rod 8 continues to move downward, the extrusion plate 15 squeezes the transmission plate 16, and the transmission plate 16 drives the adjacent rotating frame 12 to rotate counterclockwise ( Figure 6, viewed from the front to the back) and the torsion spring 17 further stores force, the rotating frame 12 drives the threaded rod 13 and the support block 181 to rotate synchronously, and the threaded rod 13 drives the positioning frame 14 to rotate synchronously away from the pole. In this process, as the rotating frame 12 rotates, the support block 181 moves away from the corresponding support ring 18 area below its initial position, and the rotating frame 12 and its support block 181 no longer provide initial support and positioning for the support shell 11. The rotating frame 12 no longer supports the support shell 11, and the support shell 11 is under the action of gravity and the extrusion force of the extrusion plate 15. The lower part drives the parts on it to move downward until the support shell 11 contacts the upper side of the pole, and the support shell 11 stops moving downward. During this process, the rotating frame 12 continues to rotate. As the guide rod 8 continues to move downward, the extrusion plate 15 continues to squeeze the transmission plate 16 until the transmission plate 16 rotates 90° and the transmission plate 16 cannot rotate. The extrusion plate 15 stops moving downward, the guide rod 8 and the parts on it stop moving, the electric lifting frame 7 stops moving, and the rotating frame 12 stops moving, so that the parts on it complete the avoidance of the cover plate and the pole welding point.

[0042] The staff starts the existing welding module to weld the cover and the pole. During the welding process, when the welding module needs to be avoided, the second motor 5 is started, and the output shaft of the second motor 5 drives the electric lifting frame 7 to rotate through the adjusting frame 6, and the electric lifting frame 7 drives the parts on it to rotate to avoid the welding module. When the welding of the cover and the pole is completed, the second motor 5 drives the adjusting frame 6 and the parts on it to rotate in the opposite direction and reset, and the electric lifting frame 7 drives the parts on it to move upward and reset, the spring 10 pushes the extrusion rod 9 to reset, the extrusion force of the extrusion plate 15 on the transmission plate 16 is reduced, and the torsion spring 17 drives the rotating frame 12 to rotate in the opposite direction and reset. After that, the staff takes out the welded "battery cover" and repeats the above process to fix other "battery covers".

[0043] Example 2: Based on Example 1, Figure 5-Figure 8 As shown, the rotating frame 12 is threadedly connected to the adjacent threaded rod 13, and the axis of the threaded rod 13 is deflected from top to bottom toward the direction of the axis of the extrusion rod 9.

[0044] In this embodiment, the rotating frame 12 is threadedly connected to the adjacent threaded rod 13. The staff can adjust the position of the positioning frame 14 by rotating the threaded rod 13, so that the distance between the positioning frame 14 and the adjacent rotating frame 12 increases as the distance between the positioning frame 14 and the axis of the adjacent guide rod 8 decreases, thereby positioning poles of different sizes and shapes. When rotating the threaded rod 13, the staff rotates the threaded rod 13 a full circle to adjust the position of the positioning frame 14, ensuring that the orientation of the positioning frame 14 does not change.

[0045] Example 3: Based on Example 2, Figure 4-Figure 6 and Figure 8As shown, it also includes symmetrically distributed limit components, which are respectively arranged on adjacent electric lifting frames 7. The limit components are used to limit the position of the electric lifting frames 7 and the adjacent guide rods 8. The limit components include a circular plate 20, which is rotatably connected to the guide rod 8. A tension spring 21 is fixed between the circular plate 20 and the adjacent electric lifting frames 7. Circumferentially distributed splines 22 are fixed to the guide rod 8. The splines 22 slide along the adjacent electric lifting frames 7. The guide rod 8 is slidably and rotatably connected to the electric lifting frames 7.

[0046] Further, such as Figure 6 and Figure 8 As shown, the elastic coefficient of the tension spring 21 is greater than the elastic coefficient of the spring 10 .

[0047] The above solution provides a method for separating the electric lifting frame 7 from the guide rod 8 when adjusting the position of the electric lifting frame 7 to avoid the moving path of the existing welding module, thereby increasing the position stability of the guide rod 8; the circular plate 20 is located at the upper end of the guide rod 8, and a circular ring is provided in the middle of the guide rod 8. The circumferentially distributed splines 22 are located between the circular ring of the guide rod 8 and the circular plate 20. When not in operation, the splines 22 are located inside the electric lifting frame 7, and the distance between the lower side of the splines 22 and the circular ring on the guide rod 8 is not less than the thickness of the right part of the electric lifting frame 7. After the electric lifting frame 7 moves downward and separates from the spline 22, the electric lifting frame 7 contacts the ring on the guide rod 8 and stops moving. At this time, the electric lifting frame 7 and the guide rod 8 can rotate relative to each other. The lower part of the spline 22 is provided with a chamfer, which facilitates the spline 22 to re-enter the electric lifting frame 7 when the electric lifting frame 7 moves upward. The ratio of the elastic coefficients of the tension spring 21 and the spring 10 is used to make the guide rod 8 and the extrusion rod 9 move relative to each other first, ensuring that the electric lifting frame 7 and the guide rod 8 do not rotate relative to each other when the pole and the cover are pressed together.

[0048] Working process: During the downward movement of the electric lifting frame 7, the electric lifting frame 7 drives the circular plate 20 to move downward through the tension spring 21, and the circular plate 20 drives the guide rod 8 to move downward, so that the guide rod 8 drives the extrusion rod 9 to move downward, and the extrusion rod 9 drives the support shell 11 to move downward, so that the positioning frame 14 moves downward and repeats the above process to adjust the position of the cover plate and the pole until the support block 181 contacts the cover plate, the support shell 11 stops moving, the guide rod 8 continues to move downward and drives the extrusion rod 9 to move downward through the spring 10 to press the cover plate and the pole until the two are pressed together, the extrusion rod 9 stops moving downward, the guide rod 8 continues to drive the parts on it to move downward and compress the spring 10, the extrusion plate 15 squeezes the transmission plate 16 to rotate the frame 12 and The parts on it rotate until the transmission plate 16 can no longer rotate, and the guide rod 8 stops moving. The electric lifting frame 7 moves downward relative to the guide rod 8 along the spline 22 and stretches the tension spring 21. When the electric lifting frame 7 is separated from the spline 22, the spline 22 releases the limit on the electric lifting frame 7, allowing the electric lifting frame 7 and the guide rod 8 to rotate relative to each other until the electric lifting frame 7 contacts the circular ring on the guide rod 8, and the electric lifting frame 7 stops moving downward. The above process is then repeated to weld the cover plate and the pole. When it is necessary to avoid the welding module, the adjusting frame 6 drives the electric lifting frame 7 to rotate. The electric lifting frame 7 only drives the circular plate 20 to rotate through the tension spring 21, thereby reducing the circumferential force applied by the electric lifting frame 7 to the guide rod 8 and increasing the stability of the pole position.

[0049] Example 4: Based on Example 3, Figure 3 As shown, it also includes a positioning component, which is arranged on the base 1. The positioning component is used to limit the position of the sealing ring between the battery cover and the pole. The positioning component includes an electric push rod 23, which is fixed to the base 1. The telescopic end of the electric push rod 23 is slidably connected to the connecting frame 2. The telescopic end of the electric push rod 23 is fixed to a support plate 24, which is used to support the fixing frame 4. The support plate 24 is fixed with symmetrically distributed positioning rods 25. The fixing frame 4 is provided with through holes distributed in a rectangular shape. The through holes are used for the positioning rods 25 to pass through the fixing frame 4. The positioning rods 25 are used to limit the position of the sealing ring.

[0050] The above scheme provides a way to adjust and fix the position of the sealing ring to prevent the sealing ring from being misplaced when adjusting the position of the pole; the electric push rod 23 is located on the left part of the upper side of the base 1. When not working, the telescopic end of the electric push rod 23 is in a retracted state, and the telescopic end of the electric push rod 23 drives the support plate 24 to move upward, so that the upper side of the support plate 24 contacts the left part of the fixing frame 4, thereby supporting the force-bearing area of ​​the fixing frame 4 and reducing the probability of deformation of the fixing frame 4. In this embodiment, the support plate 24 has two positioning rods 25 symmetrically distributed front and back, and the upper end of the positioning rod 25 is provided with a chamfer to facilitate the positioning rod 25 to enter the hole of the sealing ring when it moves upward, adjust the position of the sealing ring, and ensure that the sealing ring is located in the center of the pole.

[0051] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A battery cover plate pole welding tool, characterized in that: The invention comprises a base (1), a connecting frame (2) is fixedly connected to the base (1), a first motor (3) is fixedly connected inside the base (1), an output shaft of the first motor (3) passes through the connecting frame (2), the connecting frame (2) is rotatably connected to a fixing frame (4) fixedly connected to the output shaft of the first motor (3), a symmetrically distributed second motor (5) is fixedly connected to the base (1), the output shaft of the second motor (5) is fixedly connected to an adjusting frame (6) rotatably connected to the connecting frame (2), the adjusting frame (6) is equipped with an electric lifting frame (7), the electric lifting frame (7) is provided with a guide rod (8), and the guide rod (8) is slidably connected to an extrusion rod ( 9), and a spring (10) is fixedly connected between the two, the extrusion rod (9) is slidably connected to a support shell (11), the support shell (11) is hinged with a circumferentially distributed rotating frame (12), the rotating frame (12) is provided with a threaded rod (13), the threaded rod (13) is fixedly connected to a positioning frame (14), the positioning frame (14) is used to adjust the position of the cover plate and the pole, the guide rod (8) is provided with circumferentially distributed adjustment components and the same number as the adjacent rotating frames (12), the adjustment components are used to drive the adjacent rotating frames (12) to rotate, and the fixed frame (4) is provided with a fixing component for limiting the moving distance of the rotating frame (12).

2. A battery cover plate electrode welding tool according to claim 1, characterized in that: The positioning frame (14) is provided with a first guide surface (141) and a second guide surface (142), wherein the first guide surface (141) is located on a side of the positioning frame (14) away from the support shell (11), and the first guide surface (141) is used to push the cover plate to move, and the second guide surface (142) is located on a side of the positioning frame (14) close to the support shell (11), and the second guide surface (142) is used to push the pole to move.

3. A battery cover plate electrode welding tool according to claim 2, characterized in that: The adjustment assembly includes an extrusion plate (15), which is fixed to the adjacent guide rod (8). The extrusion plate (15) is provided with a rectangular hole (151). The upper part of the rotating frame (12) is fixed with a transmission plate (16). The upper part of the transmission plate (16) is tilted toward the axial direction of the adjacent extrusion rod (9). The upper part of the transmission plate (16) is located in the adjacent rectangular hole (151). The extrusion plate (15) is used to push the transmission plate (16) to rotate. A torsion spring (17) is fixed between the rotating frame (12) and the adjacent support shell (11). The extrusion plate (15) is slidably connected to the adjacent support shell (11).

4. A battery cover plate electrode welding tool according to claim 3, characterized in that: The lower portion of the extrusion plate (15) contacts the adjacent transmission plate (16) to limit the rotation of the transmission plate (16).

5. A battery cover plate electrode welding tool according to claim 3, characterized in that: The fixing assembly includes support rings (18) distributed in a rectangular shape, all of the support rings (18) are fixed to the fixing frame (4), the support rings (18) are used to support the cover plate, the lower part of the rotating frame (12) is fixed with a support block (181), the support block (181) is located above the adjacent support rings (18), and the support block (181) is used to limit the moving distance of the adjacent rotating frame (12).

6. A battery cover plate electrode welding tool according to claim 2, characterized in that: A circumferentially distributed guide ball (19) is provided on one side of the positioning frame (14) close to the axis of the adjacent guide rod (8).

7. A battery cover plate electrode welding tool according to claim 5, characterized in that: The rotating frame (12) is threadedly connected to the adjacent threaded rod (13), and the axis of the threaded rod (13) deflects from top to bottom toward the direction of the axis of the extrusion rod (9).

8. A battery cover plate electrode welding tool according to claim 3, characterized in that: The invention also includes symmetrically distributed limiting components, which are respectively arranged on adjacent electric lifting frames (7). The limiting components are used to limit the position of the electric lifting frames (7) and the adjacent guide rods (8). The limiting components include a circular plate (20), which is rotatably connected to the guide rods (8). A tension spring (21) is fixed between the circular plate (20) and the adjacent electric lifting frames (7). Circumferentially distributed splines (22) are fixed to the guide rods (8), and the splines (22) slide along the adjacent electric lifting frames (7). The guide rods (8) are slidably and rotatably connected to the electric lifting frames (7).

9. A battery cover plate electrode welding tool according to claim 8, characterized in that: The elastic coefficient of the tension spring (21) is greater than the elastic coefficient of the spring (10).

10. A battery cover plate electrode welding tool according to claim 5, characterized in that: The invention also includes a positioning assembly, which is arranged on the base (1) and is used to limit the position of the sealing ring between the battery cover and the pole. The positioning assembly includes an electric push rod (23), which is fixed to the base (1). The telescopic end of the electric push rod (23) is slidably connected to the connecting frame (2). The telescopic end of the electric push rod (23) is fixed to a support plate (24), and the support plate (24) is used to support the fixing frame (4). The support plate (24) is fixed with symmetrically distributed positioning rods (25). The fixing frame (4) is provided with rectangularly distributed through holes, which are used for the positioning rods (25) to pass through the fixing frame (4). The positioning rods (25) are used to limit the position of the sealing ring.

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