Cap butt joint device for lithium battery forming

Abstract

The invention relates to the technical field of lithium batteries, in particular to a cap butt joint device for lithium battery forming. The invention provides a cap butt joint device for lithium battery forming, which comprises a main body structure base, and a plurality of cylindrical placing pieces are fixedly connected to the base and are used for placing lithium battery cylindrical cells; supporting frames which are symmetrically distributed along the placing piece are connected to the base in a sliding mode, and clamping springs which are symmetrically distributed are connected between each supporting frame and the base. According to the invention, through the fixing piece, the rotating piece, the guiding piece, the second wedge-shaped block and the like, the charging interfaces of several caps face the same direction before the caps are installed, and through a lifting transmission chain formed by an electric push rod, a telescopic rod, a connecting piece and a nail-shaped sliding rod, the caps with the same direction can be installed on a cylindrical battery cell; the installation process can be simplified, installation errors and debugging time caused by inconsistent directions are reduced, the automation degree of a production line can be improved, and therefore the overall production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a cap docking device for lithium battery molding. Background Art

[0002] With the continuous advancement of technology, more and more lithium batteries have begun to support Type-C interface charging. Due to its high efficiency and convenience, the Type-C interface is increasingly used in lithium batteries. The Type-C interface supports forward and reverse insertion, has fast data transmission speed, and can support larger current and power, which significantly improves the charging efficiency and convenience of lithium batteries.

[0003] The Type-C interface lithium battery consists of a cylindrical cell, a Type-C charging protection board, a plastic cap, a stainless steel integrated cap, an insulating gasket and a gold-plated contact. The side wall of the stainless steel integrated cap has a charging port. The existing stainless steel integrated cap is generally installed on the cylindrical cell by laser welding or mechanical clips, but these fixing methods are difficult to ensure the consistency of the direction of the charging port during docking. This results in the subsequent assembly process, workers need to spend extra time and energy to adjust the direction of each battery to ensure that they can be correctly connected to the charging device or other related components, which not only increases the difficulty of assembly, but may also lead to a significant reduction in production efficiency.

[0004] Based on the above situation, the present invention proposes a cap docking device for lithium battery molding. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art that the charging interface of the stainless steel integrated cap is difficult to maintain consistent direction during docking, resulting in complicated subsequent assembly steps and reduced production efficiency, the technical problem of the present invention is to provide a cap docking device for lithium battery molding.

[0006] Technical solution: A cap docking device for lithium battery molding, including a main structure base, on which are fixedly connected a plurality of cylindrical placement pieces for placing cylindrical lithium battery cells; a support frame symmetrically distributed along the placement pieces is slidably connected to the base, symmetrically distributed clamping springs are connected between each support frame and the base, each clamping spring is wound around the base to ensure that the support frame can slide stably, a plurality of semicircular connectors are fixedly connected to each support frame, two connectors along the longitudinal direction are arranged facing each other, and they can form a complete circle, each connector is slidably connected to a symmetrically distributed extrusion piece, a force storage spring is connected between the extrusion piece and the adjacent connector, each force storage spring is wound around the adjacent extrusion piece, each extrusion piece is arc-shaped, and a lifting component for controlling the inward and outward movement of the connector is provided on the base.

[0007] In addition, it is particularly preferred that the jacking assembly includes a first telescopic member. A plurality of first telescopic members are fixedly connected to the base, and the plurality of first telescopic members are symmetrically distributed along the placing member. A lifting frame is connected between the telescopic ends of the plurality of first telescopic members. The lifting frame is provided with a plurality of wedge-shaped blocks on the side close to the first telescopic member, and the inclined surfaces of the wedge-shaped blocks are all arranged inward. In addition, the lifting frame is also provided with symmetrically distributed convex columns, and the base is slidably connected with symmetrically distributed placing tables on the side close to the convex columns.

[0008] In addition, it is particularly preferred that the tops of the symmetrically distributed placing tables are arranged in an inclined surface, and rubber blocks for increasing friction are provided on the inclined surface.

[0009] In addition, it is particularly preferred that each support frame is rotatably connected with symmetrically distributed rollers on the side close to the lifting frame, and the rollers are in contact with the wedge-shaped blocks of the lifting frame.

[0010] In addition, it is particularly preferred that a connecting column is fixedly connected to the base, an electric push rod is installed at the top of the connecting column, a connecting member is fixedly connected to the telescopic end on the lower side of the electric push rod, and a clamping assembly for aligning the stainless steel integrated cap with the cylindrical battery cell is provided on the connecting member. A fixing cylinder is fixedly connected to the side of the base close to the connecting column. A nail-shaped sliding rod is slidably connected in the fixing cylinder. A first spring is connected between the nail-shaped sliding rod and the fixing cylinder, and the first spring is wound around the nail-shaped sliding rod. A telescopic rod is connected between the top of the nail-shaped sliding rod and the bottom of the connecting member. A second spring is connected between the top of the nail-shaped sliding rod and the connecting member, and the second spring is wound around the telescopic rod. The electric push rod, the telescopic rod, the connecting member, and the nail-shaped sliding rod together constitute a transmission chain for lifting movement.

[0011] In addition, it is particularly preferred that the clamping assembly includes a plurality of second telescopic members connected to the bottom of the connecting member. A screw rod is fixedly connected to the bottom of each second telescopic member, a clamping member is fixedly connected to the bottom of the screw rod, symmetrically distributed first wedge-shaped blocks are slidably connected to the inner side of each clamping member, a return spring is connected between each first wedge-shaped block and the adjacent clamping member, and each return spring is wound around the adjacent first wedge-shaped block. Each clamping member clamps a cap through the adjacent first wedge-shaped block. A charging interface is opened on each cap, and a round hole is opened on the top wall of each cap. An adjusting mechanism for making the charging interfaces of the caps face in the same direction is provided on the nail-shaped sliding rod.

[0012] In addition, it is particularly preferred that the elastic coefficient of the first spring is much larger than that of the second spring.

[0013] In addition, it is particularly preferred that the adjustment mechanism includes a connecting frame connected to a nail-shaped sliding rod. The connecting frame is provided with uniformly distributed round holes. Round card slots are provided on the outer walls of the round holes and the clamping members. Rotating rings are rotatably connected between each round hole and the adjacent clamping member. The bottom of each rotating ring is connected with an annular frame. A blocking member is fixedly connected to each annular frame. A sliding rod is slidably connected to each blocking member. A pressure spring is connected between each sliding rod and the adjacent blocking member. Each pressure spring is wound around the adjacent sliding rod. A second wedge-shaped block is fixedly connected to each sliding rod.

[0014] In addition, it is particularly preferred that inclined surfaces are provided on both the top and bottom sides of each second wedge-shaped block. The cap is in extrusion fit with the inclined surfaces of the adjacent second wedge-shaped blocks. Arc surfaces are provided on the sides of the second wedge-shaped blocks away from the sliding rods.

[0015] In addition, it is particularly preferred that a rotating member is threadedly connected to each screw rod. A fixing member is fixedly connected to each rotating member. The fixing member is fixedly connected to the telescopic end of the adjacent second telescopic member. Symmetrically distributed guiding members are fixedly connected to each rotating ring. The rotating member slides on the adjacent guiding members.

[0016] The beneficial effects are as follows: Through components such as the fixing member, rotating member, guiding member, and second wedge-shaped block, the charging interfaces of several caps can be made to face the same direction before installation in the present invention. Then, through the transmission chain of the lifting motion composed of the electric push rod, telescopic rod, connecting member, and nail-shaped sliding rod, the caps with the same direction can be installed on the cylindrical battery cells. This can not only simplify the installation process, reduce installation errors and debugging time caused by inconsistent directions, but also improve the automation degree of the production line, thereby enhancing the overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 is a three-dimensional structural schematic diagram of components such as the base, placing member, and cylindrical battery cell of the present invention.

[0019] Figure 3 is a three-dimensional structural schematic diagram of components such as the first telescopic member, lifting frame, and support frame of the present invention.

[0020] Figure 4 is a cross-sectional view of the energy storage spring, extrusion member, and three-dimensional structure of the present invention.

[0021] Figure 5 is a three-dimensional structural schematic diagram of components such as the connecting column, electric push rod, and fixed cylinder of the present invention.

[0022] Figure 6 For the present invention Figure 5 the enlarged view at A.

[0023] Figure 7 This is a three-dimensional structural sectional view of the second telescopic member, screw rod, clamping member and other components of the present invention.

[0024] Figure 8 This is a three-dimensional structural schematic diagram of the connecting frame, fixed cylinder, connecting member and other components of the present invention.

[0025] Figure 9 This is a three-dimensional structural schematic diagram of the connecting frame, rotating ring, annular frame and other components of the present invention.

[0026] Figure 10 This is a three-dimensional structural sectional view of the sliding rod, second wedge block, blocking member and other components of the present invention.

[0027] The markings of each component in the drawings are as follows: 1: base, 11: cylindrical battery cell, 12: placing member, 13: first telescopic member, 14: lifting frame, 141: convex column, 15: placing table, 16: support frame, 161: clamping spring, 17: roller, 18: energy storage spring, 19: pressing member, 110: connecting body, 2: cap, 21: connecting column, 22: electric push rod, 23: fixed cylinder, 231: nail-shaped sliding rod, 24: first spring, 25: second spring, 26: telescopic rod, 27: connecting member, 28: second telescopic member, 29: screw rod, 210: clamping member, 211: return spring, 212: first wedge block, 3: connecting frame, 31: rotating ring, 32: annular frame, 33: sliding rod, 34: pressure spring, 35: blocking member, 36: second wedge block, 37: rotating member, 38: guiding member, 39: fixing member. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1: Refer to the attached Figures 1-4 , a cap docking device for lithium battery forming, including a main structure base 1, on which several cylindrical placing members 12 are fixedly connected. The placing members 12 are used to place the cylindrical battery cells 11 of the lithium battery. The several placing members 12 are arranged in a row in the horizontal direction. When the stainless steel integrated cap is installed on the cylindrical battery cell 11, the positive electrode of the cylindrical battery cell 11 is placed upward into the placing member 12.

[0030] During the installation of the stainless steel integrated cap, in order to ensure that the stainless steel integrated cap can be correctly stuck on the positive end of the cylindrical battery cell 11, the cylindrical battery cell 11 must be kept vertically placed to ensure smooth installation and product quality. If the cylindrical battery cell 11 is skewed, the stainless steel integrated cap cannot be smoothly aligned and stuck in, and the installer needs to spend more time and energy to adjust it, thereby reducing the overall efficiency of the production line. Therefore, this embodiment clamps and positions the cylindrical battery cell 11 during the installation of the stainless steel integrated cap.

[0031] Specifically, the base 1 is slidably connected to a support frame 16 symmetrically distributed along the placement piece 12, and symmetrically distributed clamping springs 161 are connected between each support frame 16 and the base 1. Each clamping spring 161 is wound around the base 1, and each support frame 16 is fixed with a plurality of semicircular connectors 110. The two connectors 110 along the longitudinal direction are arranged opposite to each other. When the connectors 110 move inward with the support frame 16 until they come into contact with the cylindrical battery cell 11 of the lithium battery, they can combine into a complete circle and apply force to the cylindrical battery cell 11 from the front and rear directions, so that the cylindrical battery cell 11 remains in a vertically fixed state, and the clamping springs 161 will deform.

[0032] In order for the connector 110 to fit tightly with the cylindrical battery core 11 , the inner diameter of the circle formed by the connector 110 matches the size of the cylindrical battery core 11 .

[0033] Since different types of cylindrical cells 11 may have different size specifications, these specifications not only affect the thickness of the cell, but are also closely related to its capacity, usage occasions and other characteristics. If a cap is installed on a thin cylindrical cell 11, and the diameter of the thin cylindrical cell 11 is slightly smaller than the inner diameter of the synthetic circle of the connector 110, in order to enable the connector 110 to still fix the thin cylindrical cell 11, each connector 110 is also provided with a reinforcement component.

[0034] Reference Figures 3-4 Specifically, the reinforcement assembly includes an extrusion piece 19, and each connector 110 is slidably connected to a symmetrically distributed extrusion piece 19, and a force storage spring 18 is connected between the extrusion piece 19 and the adjacent connector 110, and each force storage spring 18 is wound around the adjacent extrusion piece 19, and each extrusion piece 19 is arc-shaped. When the arc-shaped extrusion pieces 19 move inward with the connector 110, they will be adaptively adjusted according to the thickness of the lithium battery cylindrical cell 11.

[0035] For thin cylindrical cells 11, the extrusion piece 19 will contact the cells and clamp the thin cylindrical cells 11 along the circumference, while the component connector 110 will not directly contact the thin cylindrical cells 11; for thick cylindrical cells 11, the extrusion piece 19 will slide outward to be flush with the inner wall of the connector 110, thereby strengthening the fixation of the thick cylindrical cells 11 under the elastic force of the storage spring 18. In this way, it can not only ensure that the cylindrical cells 11 remain in a vertical state during the installation process, improve the smoothness of the installation of the stainless steel integrated cap, but also adapt to cylindrical cells 11 of different sizes, increasing the application rate of the device.

[0036] In this embodiment, the inward and outward movement of the two connectors 110 to clamp and release the cylindrical battery core 11 is controlled by the lifting assembly. Specifically, the lifting assembly includes a first telescopic member 13, a plurality of first telescopic members 13 are fixed to the base 1, and the plurality of first telescopic members 13 are symmetrically distributed along the placement member 12. Each first telescopic member 13 is composed of two small square columns, and the arrangement order of these small sections from bottom to top is gradually tapered. This is a prior art and will not be described in detail.

[0037] A lifting frame 14 is connected between the telescopic ends of the multiple first telescopic members 13. The lifting frame 14 is provided with multiple wedge blocks on a side close to the first telescopic members 13, and the inclined surfaces of the wedge blocks are all facing inward. In addition, the lifting frame 14 is also provided with symmetrically distributed protrusions 141. A symmetrically distributed placement platform 15 is slidably connected to a side of the base 1 close to the lifting frame 14. The top of the symmetrically distributed placement platform 15 is set in an inclined surface, and a rubber block for increasing friction is provided on the inclined surface.

[0038] The support frame 16 is rotatably connected to a side of the lifting frame 14 with symmetrically distributed rollers 17, and the rollers 17 are in contact with the wedge blocks of the lifting frame 14. When the cylindrical battery cell 11 needs to be clamped and positioned, the placement platform 15 is pushed backward, and the inclined surface of the placement platform 15 pushes the convex column 141 of the lifting frame 14 upward, and the first telescopic member 13 extends upward accordingly, and the wedge blocks on the lifting frame 14 squeeze the rollers 17, and the rollers 17 slide quickly on the wedge blocks and drive the support frame 16 to move inward, thereby driving the connector 110 and the extrusion piece 19 to move inward to clamp the cylindrical battery cell 11, and the clamping spring 161 is deformed until the placement platform 15 cannot be pushed anymore. A placement groove is provided on the top of the placement platform 15, and the lifting frame 14 will be placed on the placement groove. The placement platform 15 will keep supporting the lifting frame 14, so that the connector 110 and the extrusion piece 19 can keep clamping and positioning the cylindrical battery cell 11, thereby improving the subsequent cap installation effect.

[0039] Conversely, when it is necessary to loosen the connecting body 110 from the cylindrical battery cell 11, the placement table 15 is pushed forward to disengage it from the convex post 141 of the lifting frame 14. Under the action of the self-gravity of the lifting frame 14 and the elastic force of the clamping spring 161, the lifting frame 14 moves downward to reset. At the same time, the first telescopic member 13 contracts synchronously, and the support frame 16 drives the connecting body 110 and the pressing member 19 to loosen the cylindrical battery cell 11.

[0040] Refer to the appendix Figures 5-7 In this embodiment, to improve the installation efficiency of the stainless steel integrated cap, a plurality of stainless steel caps need to be installed on the corresponding number of cylindrical battery cells 11 synchronously. Specifically, a connecting column 21 is fixedly connected to the base 1, and an electric push rod 22 is installed at the top of the connecting column 21. A connecting member 27 is fixedly connected to the telescopic end on the lower side of the electric push rod 22, and a clamping component for aligning the stainless steel cap with the cylindrical battery cell 11 is provided on the connecting member 27. Here, the electric push rod 22 serves as a lifting drive component, and drives the connecting member 27 to move up and down through the telescopic movement of its telescopic end.

[0041] A fixed cylinder 23 is fixedly connected to one side of the base 1 close to the connecting column 21. A nail-shaped sliding rod 231 is slidably connected in the fixed cylinder 23. A first spring 24 is connected between the nail-shaped sliding rod 231 and the fixed cylinder 23. The first spring 24 is wound around the nail-shaped sliding rod 231. Here, the first spring 24 serves as an elastic connecting component and provides a certain elastic force.

[0042] At the same time, a telescopic rod 26 is connected between the top of the nail-shaped sliding rod 231 and the bottom of the connecting member 27. A second spring 25 is connected between the top of the nail-shaped sliding rod 231 and the connecting member 27. The second spring 25 is wound around the telescopic rod 26. The electric push rod 22, the telescopic rod 26, the connecting member 27, and the nail-shaped sliding rod 231 together form a transmission chain for the lifting movement.

[0043] Specifically, the elastic coefficient of the first spring 24 is much larger than that of the second spring 25.

[0044] Refer to the appendix Figure 7 Specifically: The clamping component includes a plurality of second telescopic members 28 connected to the bottom of the connecting member 27. The number of the second telescopic members 28 corresponds to the number of the cylindrical battery cells 11. A screw rod 29 is fixedly connected to the bottom of each second telescopic member 28. A clamping member 210 is fixedly connected to the bottom of the screw rod 29. A symmetrically distributed first wedge-shaped block 212 is slidably connected to the inner side of each clamping member 210. A return spring 211 is connected between each first wedge-shaped block 212 and the adjacent clamping member 210. Each return spring 211 is wound around the adjacent first wedge-shaped block 212. Each clamping member 210 clamps a cap 2 through the adjacent first wedge-shaped block 212. A charging interface is opened on each cap 2, and a round hole is opened on the top wall of each cap 2.

[0045] When the cap 2 needs to be installed on the cylindrical battery cell 11, first push each cap 2 with the top facing up towards the engaging member 210. During the upward movement of the cap 2, the top wall of the cap 2 will squeeze the first wedge-shaped block 212 to move it inward, and the return spring 211 will deform. When the cap 2 passes over the first wedge-shaped block 212, under the elastic force of the return spring 211, the first wedge-shaped block 212 will move outward to abut against the inner wall of the cap 2. At this time, the charging interface orientations of the caps 2 cannot be made consistent. Therefore, in this embodiment, an adjustment mechanism for adjusting the charging interface orientations of the caps 2 is provided.

[0046] Embodiment 2: Refer to the appendix Figures 8-10 Specifically, the adjustment mechanism includes a connecting frame 3 connected to the nail-shaped sliding rod 231. The connecting frame 3 is provided with uniformly distributed round holes, and circular card slots are opened inside the round holes. Rotating rings 31 are rotatably connected in each circular card slot. The bottom of each rotating ring 31 is connected with an annular frame 32. A blocking member 35 is fixedly connected to each annular frame 32. A sliding rod 33 is slidably connected to each blocking member 35. The sliding rod 33 passes through the adjacent annular frame 32. A compression spring 34 is connected between the sliding rod 33 and the adjacent blocking member 35. Each compression spring 34 is wound around the adjacent sliding rod 33. A second wedge-shaped block 36 is fixedly connected to each sliding rod 33. Inclined surfaces are provided on both the top and bottom sides of each second wedge-shaped block 36.

[0047] When the cap 2 is upwardly clamped between the two first wedge-shaped blocks 212, the top wall of the cap 2 will contact the bottom inclined surface of the second wedge-shaped block 36, and the cap 2 will squeeze the second wedge-shaped block 36 to drive the sliding rod 33 to slide backward, and the compression spring 34 will be compressed. When the top wall of the cap 2 passes over the second wedge-shaped block 36, under the elastic force of the compression spring 34, the sliding rod 33 will drive the second wedge-shaped block 36 to slide forward. At this time, the sliding rod 33 will abut against the outer wall of the cap 2, and the compression spring 34 is still in a slightly compressed state. As the cap 2 moves upward to contact the bottom of the engaging member 210, if the charging interface on the cap 2 is completely aligned with the second wedge-shaped block 36, under the elastic force of the compression spring 34, the second wedge-shaped block 36 will extend into the cap 2 from the charging interface of the cap 2. However, this is a small probability situation. In most cases, when the cap 2 is clamped between the first wedge-shaped blocks 212, the charging interface on the cap 2 is not completely aligned with the second wedge-shaped block 36. Therefore, after the cap 2 is clamped, the second wedge-shaped block 36 will probably still abut against the outer wall of the cap 2.

[0048] Refer to the appendix Figure 10, therefore, it is necessary to enable the second wedge block 36 to rotate around the cap 2 for one circle so that the second wedge block 36 can extend into the charging interface and drive the cap 2 to rotate together, thereby making the orientations of the charging interfaces of multiple caps 2 consistent. Specifically: arc surfaces that fit the cap 2 are provided on the front sides of the second wedge blocks 36, so that when the second wedge blocks 36 rotate around the cap 2, the cap 2 stuck between the first wedge blocks 212 can maintain a stable state. At the same time, a rotating member 37 is threadedly connected to each screw rod 29, a fixing member 39 is fixedly connected to each rotating member 37, the fixing member 39 is fixedly connected to the telescopic ends of the adjacent second telescopic members 28, symmetrically distributed guiding members 38 are fixedly connected to each rotating ring 31, and the rotating member 37 slides on the adjacent guiding members 38.

[0049] As described above, the electric push rod 22, the telescopic rod 26, the connecting member 27, and the nail-shaped sliding rod 231 together form a transmission chain for the lifting movement. When the electric push rod 22 drives the connecting member 27 to move downward, the telescopic rod 26 and the second telescopic member 28 contract downward accordingly, and the second spring 25 will deform. Since the elastic coefficient of the first spring 24 is much larger than that of the second spring 25, the nail-shaped sliding rod 231, the connecting frame 3, the rotating ring 31, the annular frame 32, the sliding rod 33, and the second wedge block 36 remain relatively stationary in the vertical direction, so that the guiding member 38, the clamping member 210, and the screw rod 29 also remain relatively stationary. However, the downward contraction of the second telescopic member 28 causes the fixing member 39 to drive the rotating member 37 to move downward. Since the rotating member 37 is threadedly connected to the screw rod 29, the rotating member 37 will rotate forward while moving downward, thereby driving the rotating ring 31, the annular frame 32, the sliding rod 33, and the second wedge block 36 to rotate around the cap 2 for one circle through the guiding member 38. When the rotating second wedge block 36 aligns with the charging interface on the cap 2, under the elastic force of the compression spring 34, the second wedge block 36 will extend into the charging interface and drive the cap 2 to rotate together. Since the movement trajectory of the second wedge block 36 is a circle, when the second wedge block 36 returns to the starting point, the charging interfaces of all caps 2 are oriented in the same direction.

[0050] When the telescopic rod 26 is compressed to the shortest, the second spring 25 is also compressed to the limit. Continuing to control the electric push rod 22 to drive the connecting piece 27 to move downward, the nail-shaped slide rod 231 also drives the connecting frame 3, the rotating ring 31, the clamping piece 210, the cap 2, etc. to move downward together. The nail-shaped slide rod 231 will extend downward into the fixed cylinder 23, and the first spring 24 will be compressed. When the cap 2 moves downward to be clamped on the cylindrical battery cell 11, then control the electric push rod 22 to drive the connecting piece 27 to return upward to its original position. The second spring 25 and the first spring 24 return to their original lengths, and the telescopic rod 26 and the second telescopic member 28 extend upward and reset accordingly. At the same time, the rotating member 37 will rotate reversely while moving upward, and the rotating member 37 drives the rotating ring 31, the annular frame 32, the sliding rod 33, the second wedge-shaped block 36, etc. to rotate reversely for one circle through the guiding member 38.

[0051] In this embodiment, through the fixing member 39, the rotating member 37, the guiding member 38, the second wedge-shaped block 36, etc., it is possible to make the charging interfaces of several caps 2 face the same direction before the cap 2 is installed. Then, through the transmission chain of the lifting movement composed of the electric push rod 22, the telescopic rod 26, the connecting piece 27, and the nail-shaped slide rod 231, the caps 2 with the same direction can be installed on the cylindrical battery cell 11. This can not only simplify the installation process, reduce installation errors and debugging time caused by inconsistent directions, but also improve the automation degree of the production line, thereby enhancing the overall production efficiency.

[0052] Those skilled in the art of this industry should understand that the above embodiments do not limit the present invention in any form. Any technical solutions obtained by using equivalent replacements or equivalent transformations fall within the protection scope of the present invention.

Claims

1. A cap docking device for lithium battery molding, comprising a main structural base (1), on which a plurality of cylindrical placement members (12) are fixedly connected, characterized in that: A support frame (16) symmetrically distributed along the placement piece (12) is slidably connected to the base (1), and symmetrically distributed clamping springs (161) are connected between the support frame (16) and the base (1), and the clamping springs (161) are wound around the base (1). A plurality of semicircular connectors (110) are fixedly connected to the support frame (16), and two connectors (110) along the longitudinal direction are arranged opposite to each other, and the connectors (110) can be combined into a complete circle. The connectors (110) are slidably connected to symmetrically distributed extrusion pieces (19), and a force storage spring (18) is connected between the extrusion piece (19) and the adjacent connector (110), and the force storage spring (18) is wound around the adjacent extrusion piece (19), and the extrusion piece (19) is arc-shaped. A lifting component for controlling the inward and outward movement of the connector (110) is provided on the base (1).

2. A cap docking device for lithium battery molding according to claim 1, characterized in that: The lifting assembly comprises a first telescopic member (13), a plurality of first telescopic members (13) are fixedly connected to the base (1), the plurality of first telescopic members (13) are symmetrically distributed along the placement member (12), a lifting frame (14) is connected between the telescopic ends of the plurality of first telescopic members (13), the lifting frame (14) is provided with a plurality of wedge blocks on a side close to the first telescopic member (13), the inclined surfaces of the wedge blocks are all arranged inwardly, the lifting frame (14) is also provided with symmetrically distributed protruding columns (141), and the base (1) is slidably connected with a symmetrically distributed placement platform (15) on a side close to the protruding columns (141).

3. A cap docking device for lithium battery molding according to claim 2, characterized in that: The top of the symmetrically distributed placement platform (15) is arranged in an inclined surface, and a rubber block for increasing friction is arranged on the inclined surface.

4. A cap docking device for lithium battery molding according to claim 1, characterized in that: The support frame (16) is rotatably connected to symmetrically distributed rollers (17) on one side close to the lifting frame (14), and the rollers (17) are in contact with the wedge blocks of the lifting frame (14).

5. A cap docking device for lithium battery molding according to any one of claims 1 to 4, characterized in that: A connecting column (21) is fixedly connected to the base (1), an electric push rod (22) is installed on the top of the connecting column (21), a connecting piece (27) is fixedly connected to the telescopic end of the lower side of the electric push rod (22), and a clamping assembly is provided on the connecting piece (27) for aligning the stainless steel integrated cap with the cylindrical battery core (11), a fixing cylinder (23) is fixedly connected to one side of the base (1) close to the connecting column (21), a nail-shaped sliding rod (231) is slidably connected in the fixing cylinder (23), and the nail-shaped sliding rod (231) and the fixing cylinder (23) are connected to each other. A first spring (24) is connected, the first spring (24) is wound around a nail-shaped slide bar (231), a telescopic stick (26) is connected between the top of the nail-shaped slide bar (231) and the bottom of a connecting piece (27), a second spring (25) is connected between the top of the nail-shaped slide bar (231) and the connecting piece (27), the second spring (25) is wound around the telescopic stick (26), and the electric push rod (22), the telescopic stick (26), the connecting piece (27), and the nail-shaped slide bar (231) together constitute a transmission chain for lifting motion.

6. A cap docking device for lithium battery molding according to claim 5, characterized in that: The clamping assembly comprises a plurality of second telescopic members (28) connected to the bottom of the connecting member (27), the bottom of each of the second telescopic members (28) is fixedly connected with a screw rod (29), the bottom of each of the screw rods (29) is fixedly connected with a clamping member (210), the inner side of each of the clamping members (210) is slidably connected with symmetrically distributed first wedge blocks (212), a return spring (211) is connected between each of the first wedge blocks (212) and the adjacent clamping members (210), the return spring (211) is wound around the adjacent first wedge blocks (212), the clamping members (210) are clamped with a cap (2) through the adjacent first wedge blocks (212), the cap (2) is provided with a charging interface, the top wall of the cap (2) is provided with a round hole, and the nail-shaped sliding rod (231) is provided with an adjustment mechanism for making the charging interface of the cap (2) face in the same direction.

7. A cap docking device for lithium battery molding according to claim 5, characterized in that: The elastic coefficient of the first spring (24) is much greater than the elastic coefficient of the second spring (25).

8. A cap docking device for lithium battery molding according to claim 6, characterized in that: The adjustment mechanism comprises a connecting frame (3) connected to a nail-shaped sliding rod (231), the connecting frame (3) is provided with evenly distributed circular holes, circular grooves are provided in the circular holes and on the outer wall of the clamping member (210), a rotating ring (31) is rotatably connected between the circular hole and the adjacent clamping member (210), an annular frame (32) is connected to the bottom of the rotating ring (31), a blocking member (35) is fixedly connected to the annular frame (32), a sliding rod (33) is slidably connected to the blocking member (35), a pressure spring (34) is connected between the sliding rod (33) and the adjacent blocking member (35), the pressure spring (34) is wound around the adjacent sliding rod (33), and a second wedge block (36) is fixedly connected to the sliding rod (33).

9. A cap docking device for lithium battery molding according to claim 8, characterized in that: The top and bottom sides of the second wedge block (36) are both provided with inclined surfaces, the cover cap (2) is pressed and matched with the inclined surfaces adjacent to the second wedge block (36), and the side of the second wedge block (36) away from the sliding rod (33) is provided with an arc surface.

10. A cap docking device for lithium battery molding according to any one of claims 6 to 8, characterized in that: The screw rod (29) is threadedly connected with a rotating member (37), each rotating member (37) is fixedly connected with a fixing member (39), the fixing member (39) is fixedly connected to the telescopic end of the adjacent second telescopic member (28), the rotating ring (31) is fixedly connected with symmetrically distributed guide members (38), and the rotating member (37) slides on the adjacent guide members (38).

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