A cylindrical battery cap vertical welding apparatus

Abstract

A cylindrical battery cap vertical welding device comprises a rack, a battery positioning mechanism arranged on the rack, a cap feeding assembly and a welding mechanism, the cap feeding assembly is used for vertically feeding a cap to a tab of a battery positioned on the battery positioning mechanism; the cap feeding assembly, the welding mechanism and the battery positioning mechanism are arranged in sequence from top to bottom, and the cap feeding assembly feeds the cap to the tab of the battery from top to bottom. The positions of the battery positioning mechanism, the cap feeding assembly and the welding mechanism are reasonably arranged, specifically in the vertical direction, the vertical space is fully utilized, the area occupation in the horizontal plane is reduced, and the application of the welding device in a factory building with a smaller area is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cylindrical battery welding, in particular to a cylindrical battery cap vertical welding equipment. BACKGROUND

[0002] The cylindrical battery is mainly composed of a shell, a cap, a positive electrode and a negative electrode, the positive electrode and the negative electrode are respectively connected with a positive electrode lug and a negative electrode lug, the positive electrode is welded with the cap through the positive electrode lug, the negative electrode is welded with the bottom of the shell through the negative electrode lug, and the cap is tightly capped at the opening of the shell.

[0003] In the process of welding the positive electrode lug and the cap, the lug is generally in an upright state, the cap is vertically sent to the lug position and is in close contact with the lug, and then the lug and the cap are welded together by a welding device. Such a welding method prevents the cap and the positive electrode from being welded together. If the cap and the positive electrode are welded together, the cap is connected with the positive electrode and the lug at the same time, which causes a short circuit. After the lug and the cap are welded together, the whole composed of the lug and the cap is moved to make the cap cap the opening of the shell.

[0004] At present, in the industry, the cap and the lug are welded together by using a cap welding device. The cap welding device generally has a battery positioning mechanism, a feeding assembly and a welding mechanism. The battery positioning mechanism is used to limit the battery. The feeding assembly vertically sends the battery cap to the lug position of the battery core. The welding mechanism welds the cap and the lug together.

[0005] In the current cap welding device, the positions of the battery positioning mechanism, the feeding assembly and the welding mechanism are not reasonable. The whole cap welding device occupies a large area on the horizontal plane and has a small space utilization in the vertical direction. Such a structure is obviously not reasonable. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides a cylindrical battery cap vertical welding equipment, which can further utilize the vertical space and reduce the area occupation on the horizontal plane, thereby improving the application of the welding equipment in a factory with a small area.

[0007] A cylindrical battery cap vertical welding equipment includes a rack, a battery positioning mechanism, a cap feeding assembly and a welding mechanism arranged on the rack. The cap feeding assembly is used to vertically send the cap to the lug of the battery positioned on the battery positioning mechanism. The cap feeding assembly, the welding mechanism and the battery positioning mechanism are arranged in sequence from top to bottom, and the cap feeding assembly sends the cap to the lug of the battery from top to bottom.

[0008] The technical scheme is reasonable in arrangement of positions of the battery positioning mechanism, the cap feeding assembly and the welding mechanism, and is arranged in a vertical direction, fully utilizes the vertical space, reduces the area occupation in a horizontal plane, and improves the application of the welding equipment in a factory with a small area.

[0009] The battery positioning mechanism, the cap feeding assembly and the welding mechanism are all in the area covered by the rack in the width direction.

[0010] Preferably, the welding mechanism is in the area covered by the cap feeding assembly in the width direction; and the battery positioning mechanism is in the area covered by the cap feeding assembly in the width direction.

[0011] Preferably, the welding mechanism is a resistance welding structure, which comprises a fixed electrode, a feeding electrode, a moving part for mounting the feeding electrode and capable of moving the feeding electrode close to or away from the fixed electrode, and a moving part driving structure for driving the moving part to move.

[0012] Preferably, the moving part driving structure is arranged vertically.

[0013] Preferably, the moving part driving structure comprises a lifting block and a lifting cylinder connected with the lifting block, and a driving slope is arranged on the lifting block, the driving slope is inclined downward with the moving part close to the driving slope, and the driving slope drives the moving part to move.

[0014] Preferably, the moving part driving structure further comprises a reset mechanism for resetting the moving part; the reset mechanism comprises a spring, one end of the spring is connected with the moving part, and the other end of the spring is connected with the rack.

[0015] Preferably, the moving part driving structure further comprises a position sensor for detecting the moving position of the moving part.

[0016] Preferably, the cap feeding assembly feeds the cap to the battery tab from top to bottom; the cap feeding assembly comprises a feeding rack, a channel body with a feeding channel is arranged on the feeding rack, and a feeding turntable is arranged on the feeding rack and below the feeding channel and has a receiving port; a positioning mechanism one is arranged on the feeding turntable and used for limiting the cap in the receiving port; the feeding turntable can rotate in a vertical plane with a straight line perpendicular to the vertical plane as a center axis, and the cap can be rotated and conveyed to the battery tab. In the technical scheme, the cap is conveyed by the rotation of the feeding turntable, and the damage to the cap is smaller than that in the prior art in which the cap is directly pushed in the cap conveying channel, so that the final qualified rate of the battery is improved.

[0017] Preferably, the positioning mechanism one is a suction mechanism, and a mounting hole for mounting the suction mechanism is arranged in the receiving port.

[0018] Preferably, the suction mechanism comprises an electromagnet.

[0019] Preferably, the number of material receiving ports is multiple, and the multiple material receiving ports are distributed on the feeding turntable in a circle and at equal angles a with the center axis of the feeding turntable as the center axis, and any material receiving port with a cap is correspondingly provided with an empty material receiving port rotating to be directly below the discharging channel when the cap is rotated and conveyed.

[0020] Preferably, the feeding turntable conveys the cap by rotating through an angle a each time.

[0021] Preferably, the feeding frame is further provided with a second positioning structure, which comprises a positioning head and a positioning head driving mechanism for driving the positioning head to horizontally approach or move away from the material receiving port.

[0022] The positioning head is provided with a magnetic attraction structure capable of attracting the cap and a positioning pin capable of cooperating with a positioning groove pre-provided at a center position of the cap; and a side surface of the feeding turntable close to the positioning head is communicated with the material receiving port.

[0023] Preferably, the discharging channel is provided with a discharging control mechanism for controlling the discharging progress; the discharging control mechanism comprises a blocking piece laterally penetrating into the discharging channel and a blocking piece driving mechanism connected with the blocking piece and capable of driving the blocking piece to exit the discharging channel.

[0024] Preferably, the channel body is connected with a material sensor for monitoring whether the discharging channel contains the cap.

[0025] Preferably, the application further comprises a cap waste recycling assembly provided on the frame; the cap waste recycling assembly is located in an area covered by the frame in the width direction; and the cap waste recycling assembly comprises a recycling box, a screw rod mechanism and a driving motor, the recycling box is installed on a screw rod sliding table of the screw rod mechanism, and the driving motor drives a screw rod in the screw rod mechanism.

[0026] In summary, the application has the following beneficial effects:

[0027] 1: The application rationally arranges the positions of the battery positioning mechanism, the cap feeding assembly and the welding mechanism in the vertical direction, fully utilizes the vertical space, reduces the area occupation in the horizontal plane, and improves the application of the welding equipment in a factory with a smaller area.

[0028] 2: The application selects resistance welding structure as the specific welding mechanism, so that the overall size of the welding mechanism, battery positioning mechanism and cap feeding assembly in the width direction is not too large, and the width size of the rack is not required to be too large, at the same time, the resistance welding structure only exists the movement of the feeding electrode, the movement path is simple, the wire bundle of the feeding electrode swings small, the swing path is simple, and the wire bundle of the feeding electrode is not prone to winding and wear, so as to ensure the service life of the whole welding equipment, and correspondingly, the small swing amplitude of the wire bundle does not require the rack to be wide to provide enough swing space.

[0029] 3: The application feeds the cap to the battery tab from top to bottom through the feeding assembly, and the feeding path is reasonable, unlike the feeding assembly that feeds the cap to the tab laterally and occupies a large area on the horizontal plane.

[0030] 4: By arranging the positioning structure two, wherein the positioning structure two comprises a positioning head, a positioning head driving mechanism for driving the positioning head to horizontally approach or move away from the material receiving port, a magnetic attraction structure capable of attracting the cap on the positioning head, and a positioning pin capable of cooperating with the positioning groove prearranged at the center position of the cap, so that each cap can obtain a reasonable height, and the whole formed by the tab and the cap after welding can completely cover the opening of the shell after being moved, thereby improving the qualified rate of welding.

[0031] 5: The application releases only one cap when the idle material receiving port rotates to below the discharging channel through the arrangement of the discharging control mechanism, so as to ensure the feeding quality of the vertical feeding mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the cap vertical welding equipment;

[0033] Figure 2 It is an installation schematic diagram of the fixed electrode on the rack;

[0034] Figure 3 It is an installation schematic diagram of the feeding electrode;

[0035] Figure 4 It is a structural schematic diagram of the feeding assembly;

[0036] Figure 5 It is a partial enlarged view of the feeding assembly;

[0037] Figure 6 It is a structural schematic diagram of the positioning structure two;

[0038] Figure 7 It is a structural schematic diagram of the positioning head;

[0039] Figure 8A schematic view of the structure of the cap waste recycling assembly. DETAILED DESCRIPTION

[0040] The application will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] Embodiment: A cylindrical battery cap vertical welding device, as shown in the figure, includes a rack 1, a battery positioning mechanism 2 arranged on the rack 1, a cap feeding assembly 5, and a welding mechanism 3. The cap feeding assembly 5 is used to vertically feed the cap to the tab of the battery positioned on the battery positioning mechanism 2. The cap feeding assembly 5, the welding mechanism 3, and the battery positioning mechanism 2 are arranged in sequence from top to bottom, and the cap feeding assembly 5 feeds the cap to the tab of the battery from top to bottom. Figures 1-3

[0042] This technical solution rationally arranges the positions of the battery positioning mechanism 2, the cap feeding assembly 5, and the welding mechanism 3, specifically in the vertical direction, fully utilizes the vertical space, reduces the area occupation in the horizontal plane, and improves the application of the welding device in a factory with a smaller area.

[0043] This embodiment is further improved: the battery positioning mechanism 2, the cap feeding assembly 5, and the welding mechanism 3 are all within the area covered by the rack 1 in the width direction, which can reduce the width of the entire welding device as much as possible and further reduce the area occupation of the welding device in the horizontal plane. Specifically, the rack 1 includes a frame body, and the frame body includes a front plate 11 and a rear plate 12 in the width direction. The battery positioning mechanism 2, the cap feeding assembly 5, and the welding mechanism 3 are between the front plate 11 and the rear plate 12.

[0044] In this embodiment, the welding mechanism 3 is within the area covered by the cap feeding assembly 5 in the width direction, and the battery positioning mechanism 2 is within the area covered by the cap feeding assembly 5 in the width direction. Such arrangement can make the overall width of the welding mechanism 3, the battery positioning mechanism 2, and the cap feeding assembly 5 as small as possible in the width direction, further reducing the area occupation of the welding device in the horizontal plane.

[0045] ​On this basis, the embodiment selects the resistance welding structure as the specific welding mechanism 3, which includes a fixed electrode 31, a feeding electrode 32, a moving piece 33 for mounting the feeding electrode 32 and capable of making the feeding electrode 32 close to or away from the fixed electrode 31, a moving piece driving structure 34 for driving the moving piece 33 to move, and the rack 1 is provided with an electrode power supply piece 37 connected with the fixed electrode 31, the electrode power supply piece 37 is a metal piece, and the surface of the electrode power supply piece 37 is provided with an insulating layer to prevent electric shock, and the rack 1 is further provided with a guide rail fixing block 381, the guide rail fixing block 381 is fixed with a guide rail 382, and the moving piece 33 is slidingly arranged on the guide rail 382 and can move on the guide rail 382.

[0046] The working principle of the resistance welding structure is that when the cap feeding assembly 5 sends the cap to the tab, the moving piece driving structure 34 acts to make the feeding electrode 32 close to the fixed electrode 31 and press the cap and the tab on the fixed electrode 31, at this time, the feeding electrode 32 and the fixed electrode 31 can weld the cap and the tab together after being powered.

[0047] By adopting the resistance welding structure, the structure size is extremely small, in this case, the overall width of the welding mechanism 3, the battery positioning mechanism 2 and the cap feeding assembly 5 is not too large, which does not require a large width of the rack 1, at the same time, the resistance welding structure only has the movement of the feeding electrode 32, the movement path is simple, the wire bundle of the feeding electrode 32 has a small swing range and a simple swing path, which does not cause the wire bundle of the feeding electrode 32 to be wound and worn, thereby ensuring the service life of the whole welding equipment, and correspondingly, the small swing range of the wire bundle does not require the rack 1 to be wide enough to provide enough space for the swing.

[0048] In the above resistance welding structure, the moving piece driving structure 34 is vertically arranged, which can further reduce the area occupied on the horizontal plane, specifically, the moving piece driving structure 34 includes a lifting block 341 and a lifting cylinder 342 connected with the lifting block 341, the rack 1 is fixedly connected with a vertical guide rail 341-1 for mounting the lifting block 341, the lifting block 341 is provided with a driving slope 3411, the driving slope 3411 is inclined downward as it approaches the moving piece 33, and the driving slope 3411 drives the moving piece 33 to move. Preferably, the moving piece 33 is provided with a roller 33-1 in rolling contact with the driving slope 3411, and when the driving slope 3411 drives the moving piece 33 to move, the roller 33-1 rolls on the driving slope 3411.

[0049] After welding is completed, the movable part 33 needs to be reset. For this purpose, the vertical welding equipment in this embodiment also includes a reset mechanism 35 for resetting the movable part 33. The reset mechanism 35 includes a spring, one end of which is connected to the movable part 33, and the other end is connected to the frame 1, specifically connected to the guide rail fixing block 381 of the frame 1.

[0050] During the movement of the moving part 33, the moving distance of the moving part 33 needs to be accurately determined so that the feeding distance of the feeding electrode 32 is appropriate. For this purpose, a position sensor 36 for detecting the moving position of the moving part 33 is also included. The position sensor 36 can be an infrared sensor. The position sensor 36 can be set on the frame 1. In this embodiment, it is set on the guide rail fixing block 381.

[0051] In this embodiment, the cap feeding component 5, such as Figures 4-7 As shown, the device includes a loading frame 50, on which a channel body 51 with a discharge channel is provided. The discharge channel provides a movement path for the caps and restricts the caps to fall vertically. The loading frame 50 is also equipped with a feeding turntable 52, which is located below the discharge channel and has a receiving port 521. The receiving port 521 is used to receive the caps falling vertically from the discharge channel. The feeding turntable 52 is equipped with a positioning mechanism 53 for restricting the caps in the receiving port 521. After the receiving port 521 is aligned with the discharge channel and receives the caps, the positioning mechanism 53 is activated to restrict the caps in the receiving port 521. Then, the feeding turntable 52 rotates and rotates in the vertical plane with a straight line perpendicular to the vertical plane as its central axis, rotating and conveying the caps to the battery tabs of the pre-clamped batteries. The feeding turntable 52 can achieve precise angle rotation by a control motor such as a servo motor. Positioning mechanism 53 keeps the cap in the receiving port 521 while the feeding turntable 52 rotates, preventing the cap from falling out of the receiving port 521.

[0052] This vertical feeding assembly utilizes a rotating feeding turntable 52 for conveying. Compared to the existing technology that directly pushes upright caps into the cap conveying channel, it causes less damage to the caps, thereby improving the final pass rate of the batteries.

[0053] In this embodiment, the positioning mechanism 53 adopts a suction mechanism, which is preferably an electromagnet. The receiving port 521 is provided with a mounting hole 522 for installing the suction mechanism, and the mounting hole 522 is oriented radially outward.

[0054] In this embodiment, the number of material receiving ports 521 is multiple, and the multiple material receiving ports 521 are distributed on the feeding turntable 52 at equal angles a around the center axis of the feeding turntable 52, and any material receiving port 521 with a cap is rotated to directly below the discharging channel while rotating the caps, and there is an empty material receiving port 521 rotating to directly below the discharging channel. The advantage is that during the rotation of the caps, the empty material receiving port 521 is sent to directly below the discharging channel for loading, without the need for special action to rotate the empty material receiving port 521 to directly below the discharging channel, so it is not necessary to spend special time to rotate the empty material receiving port 521 to directly below the discharging channel, which greatly improves the working efficiency of the vertical feeding assembly. The feeding turntable 52 rotates by an angle a each time to transport the caps, so that in the case of multiple material receiving ports 521 distributed at equal angles a, the maximum transportation efficiency is achieved in the shortest time, and the power input required for each transportation of a cap is less, which saves energy.

[0055] The material receiving port 521 described above is adapted to the shape of the cap and has a size appropriately larger than that of the cap to smoothly receive the cap. After the cap is rotated and transported to the positive tab of the battery by the feeding turntable 52, the positioning mechanism two 53 using an electromagnet is a rough positioning of the cap, which only ensures that the cap will not fall from the material receiving port 521. At this time, if the tab and the cap are directly welded together by a welding device, it is easy to cause unreasonable welding position, which is usually manifested as the cap being welded too high or too low. At this time, moving the tab and the cap as a whole is likely to cause the cap to not completely cover the opening of the shell, which is a defective product or waste product.

[0056] Therefore, the feeding rack 50 is also provided with a positioning structure two 56, which includes a positioning head 561 and a positioning head driving mechanism 562 for driving the positioning head 561 to approach the material receiving port 521 corresponding to the battery tab. The positioning head driving mechanism 562 can be a pneumatic cylinder, which is preferably a sliding table pneumatic cylinder. The positioning head 561 is connected to the positioning head driving mechanism 562 through a positioning head mounting block 563. The feeding rack 50 is provided with a mounting plate 560 for mounting the positioning head driving mechanism 562. The positioning head 561 is provided with a magnetic attraction structure 5611 capable of attracting the cap and a positioning pin 5612 capable of cooperating with a positioning groove pre-provided at the center of the cap. The magnetic attraction structure 5611 is an electromagnet, which can be directly arranged in the positioning pin 5612 or beside the positioning pin 5612. The side of the feeding turntable 52 close to the positioning head 561 is communicated with the material receiving port 521 and forms a clearance for the positioning pin 5612.

[0057] The working principle of the positioning structure two 56 is that when the cap is conveyed, the positioning head driving mechanism 562 is actuated to make the positioning pin 5612 inserted into the positioning groove at the center position of the cap, at this time, the magnetic attraction structure 5611 adopting the electromagnet is energized, the positioning mechanism one 53 adopting the electromagnet is de-energized, and the cap is attracted, so that each cap can obtain a reasonable height, and the whole formed by the tab and the cap after welding can be completely attached to the opening of the shell after being flattened, thereby improving the qualified rate of welding, when the welding between the cap and the battery tab is completed, the positioning head driving mechanism 562 drives the positioning head 561 to reset, and waits for the next positioning of the new cap.

[0058] Preferably, the discharging channel is provided with a discharging control mechanism 54 for controlling the discharging progress; the discharging control mechanism 54 comprises a blocking piece laterally penetrating into the discharging channel, and a blocking piece driving mechanism 542 connected with the blocking piece and capable of driving the blocking piece to exit the discharging channel, the blocking piece can be a rod, and the blocking piece cannot be seen in the drawing due to the angle of view, the blocking piece driving mechanism 542 can adopt a pneumatic cylinder, which is installed on the channel body 51, when the idle material receiving port 521 is rotated to below the discharging channel, the blocking piece driving mechanism 542 is actuated to make the blocking piece exit the discharging channel and release a cap. If multiple caps are released at a time, the multiple caps will be stacked together, resulting in low cap feeding quality.

[0059] Preferably, the channel body 51 is connected with a material sensor 55 for monitoring whether the discharging channel contains caps, the material sensor 55 is installed on the channel body 51 through a support 551, the channel body 51 is provided with a detection port 552, and the material sensor 55 faces the detection port 552 and monitors whether the discharging channel contains caps.

[0060] In the embodiment, as shown in Figure 2 The battery positioning mechanism 2 comprises a lifting rod 21, a positioning table 22 fixedly connected to the top of the lifting rod 21, and a lifting cylinder 23 connected with the lifting rod 21, and the upper surface of the positioning table 22 can be provided with vertical positioning holes for positioning the battery.

[0061] The cap vertical welding equipment in the application, as shown in Figure 1 , Figure 8As shown, the cap waste recycling assembly 4 is arranged on the frame 1, and is located within the area covered by the frame 1 in the width direction. The cap waste recycling assembly 4 comprises a recycling box 41, a screw rod mechanism 42, and a driving motor 43. The recycling box 41 is mounted on the screw rod slide of the screw rod mechanism 42, and the driving motor 43 is mounted on the frame 1. The driving motor 43 drives the screw rod in the screw rod mechanism 42 to rotate, so as to drive the screw rod slide to move the recycling box 41. The driving motor 43 can directly drive the screw rod, or can drive the screw rod to rotate through a belt wheel transmission structure as shown in the drawings.

[0062] The above-described embodiments are only used to describe the preferred embodiments of the present application, and are not used to limit the concept and scope of the present application. Any modification and improvement of the technical solutions of the present application made by those skilled in the art without departing from the design concept of the present application shall fall within the protection scope of the present application. The technical content of the present application claimed for protection has been fully recorded in the claims.

Claims

1. A cylindrical battery cap vertical welding device, comprising a rack (1), a battery positioning mechanism (2) arranged on the rack (1), a cap feeding assembly (5), and a welding mechanism (3), wherein the cap feeding assembly (5) is used for vertically feeding a cap to a tab of a battery positioned on the battery positioning mechanism (2); characterized in that, The cap feeding assembly (5), the welding mechanism (3) and the battery positioning mechanism (2) are arranged in sequence from top to bottom. The cap feeding assembly (5) feeds the cap to the battery tab from top to bottom; the cap feeding assembly (5) comprises a feeding rack (50), the feeding rack (50) is provided with a channel body (51) with a discharging channel, and further comprises a feeding turntable (52) provided on the feeding rack (50), the feeding turntable (52) is arranged below the discharging channel and is provided with a receiving port (521), and the feeding turntable (52) is provided with a positioning mechanism I (53) for limiting the cap in the receiving port (521); the feeding turntable (52) can rotate in a vertical plane with a straight line perpendicular to the vertical plane as the center axis, so as to rotate and convey the cap to the battery tab. The positioning mechanism I (53) is a suction mechanism, and the receiving port (521) is provided with a mounting hole (522) for mounting the suction mechanism; the suction mechanism comprises an electromagnet. The feeding rack (50) is further provided with a positioning structure II (56), and the positioning structure II (56) comprises a positioning head (561) and a positioning head driving mechanism (562) for driving the positioning head (561) to approach the receiving port (521) corresponding to the battery tab. The positioning head (561) is provided with a magnetic attraction structure (5611) capable of attracting the cap and a positioning pin (5612) capable of cooperating with a positioning groove prearranged at the center position of the cap; and the side surface of the feeding turntable (52) close to the positioning head (561) is communicated with the receiving port (521).

2. A cylindrical battery cap vertical welding apparatus according to claim 1, wherein The battery positioning mechanism (2), the cap feeding assembly (5) and the welding mechanism (3) are all arranged in the area covered by the rack (1) in the width direction.

3. A cylindrical battery cap vertical welding apparatus according to claim 1, wherein The welding mechanism (3) is arranged in the area covered by the cap feeding assembly (5) in the width direction; and the battery positioning mechanism (2) is arranged in the area covered by the cap feeding assembly (5) in the width direction.

4. A cylindrical battery cap vertical welding apparatus according to claim 3, wherein The welding mechanism (3) is a resistance welding structure, comprising a fixed electrode (31), a feeding electrode (32), a moving part (33) for mounting the feeding electrode (32) and capable of making the feeding electrode (32) approach or move away from the fixed electrode (31), and a moving part driving structure (34) for driving the moving part (33) to move.

5. A cylindrical battery cap vertical welding apparatus according to claim 4, wherein The moving part driving structure (34) is arranged vertically.

6. A cylindrical battery cap vertical welding apparatus according to claim 5, wherein The moving part driving structure (34) comprises a lifting block (341) and a lifting cylinder (342) connected with the lifting block (341), and the lifting block (341) is provided with a driving inclined surface (3411) which inclines downward with the approach of the moving part (33), and the driving inclined surface (3411) drives the moving part (33) to move.

7. A cylindrical battery cap vertical welding apparatus according to claim 6, wherein Further comprising a reset mechanism (35) for resetting the moving part (33); the reset mechanism (35) comprises a spring, one end of the spring is connected with the moving part (33), and the other end is connected with the rack (1).

8. A cylindrical battery cap vertical welding apparatus according to claim 4, wherein Further comprising a position sensor (36) for detecting the moving position of the moving part (33).

9. A cylindrical battery cap vertical welding apparatus according to claim 1, wherein The number of the material receiving ports (521) is multiple, the multiple material receiving ports (521) are distributed on the feeding turntable (52) in a circle and an equal angle α around the center axis of the feeding turntable (52), and any material receiving port (521) with a cover is rotated to directly below the discharging channel when the cover is rotated and conveyed. The feeding turntable (52) rotates by an angle α each time to convey the cover.

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