A winding device

Abstract

The utility model relates to a winding device, including a needle winding mechanism and a mold locking mechanism, the needle winding mechanism includes a first outer needle winding mechanism and a second outer needle winding mechanism that are relatively arranged, the first outer needle winding mechanism can be relatively close to or away from the second outer needle winding mechanism; the mold locking mechanism includes a mold locking connecting component and a mold locking component, the mold locking component is adapted to the needle winding mechanism and can be driven close to or away from the mold locking connecting component; the mold locking connecting component is provided with a locking recess, and the mold locking component is provided with a locking protrusion adapted to the locking recess; the mold locking component switches between a first position and a second position arranged along the axial direction of the needle winding mechanism, when the mold locking component is in the first position, the mold locking component cooperates with the needle winding mechanism, and the locking protrusion is separated from the locking recess; when the mold locking component is in the second position, the mold locking component is separated from the needle winding mechanism, and the locking protrusion is matched with the locking recess. The utility model has high diameter changing accuracy, good diameter changing effect, high product quality, and is suitable for the production of small-sized battery cells.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery automation equipment, in particular to a winding device. Background Art

[0002] The cell of a lithium battery includes a tab, a separator, an anode sheet, and a cathode sheet. In the production process of a lithium-ion cell, taking a wound cell as an example, the pole sheets and separators are stacked in a certain order to form a strip through a winding device, and the strip is wound to a fixed length and affixed with a stop glue to obtain a finished cell. The tab is set in the cell to lead the positive and negative electrodes out of the cell.

[0003] Due to various errors in the production process, the tabs in the finished battery cells are misaligned, which affects the quality of the battery cells. Therefore, a winding needle mechanism that can change the outer circumference of the winding needle is required in the battery cell winding equipment to adjust the tab position by adjusting the circumference of the winding needle.

[0004] In the prior art, there are many winding needle mechanisms that can change the outer circumference of the winding needle. However, most of the winding equipment using such winding needle mechanisms is used to produce large-sized battery cells, such as power battery cells. Due to the difference in battery cell specifications, when producing smaller-sized battery cells such as mobile phone battery cells, the winding equipment in the prior art is difficult to meet the production requirements of small-sized battery cells, and the product quality is poor. Summary of the invention

[0005] To this end, the technical problem to be solved by the utility model is to overcome the problem that existing winding equipment is difficult to be compatible with the production of small-sized battery cells and the product quality is poor, and to provide a winding equipment with high diameter changing accuracy, good diameter changing effect, high product quality, and suitable for the production of small-sized battery cells.

[0006] The utility model provides a winding device, a winding needle mechanism, comprising a first outer winding needle and a second outer winding needle arranged opposite to each other, the first outer winding needle can be relatively close to or relatively far away from the second outer winding needle; a locking mechanism, comprising a locking connection component and a locking component, the locking component is adapted to the winding needle mechanism and can be driven close to or away from the locking connection component; wherein a locking recess is provided on the locking connection component, and a locking protrusion adapted to the locking recess is provided on the locking component; the locking component switches between a first position and a second position arranged along the axial direction of the winding needle mechanism, when the locking component is in the first position, the locking component cooperates with the winding needle mechanism, and the locking protrusion is separated from the locking recess; when the locking component is in the second position, the locking component is separated from the winding needle mechanism, and the locking protrusion is matched with the locking recess.

[0007] In one embodiment of the utility model, the free end of the first outer curling needle is provided with a first outer needle connecting bevel; an outer needle ring groove is recessed on the locking component, and the outer needle ring groove is used to accommodate the free end of the first outer curling needle and the free end of the second outer curling needle, and a second outer needle connecting bevel adapted to the first outer needle connecting bevel is provided on the outer needle ring groove.

[0008] In one embodiment of the utility model, the outer needle ring groove includes a accommodating area and a limiting area, the accommodating area is used to accommodate the free end of the first outer curling needle and the free end of the second outer curling needle, and the limiting area is used to form the limitation of the free end of the first outer curling needle and the free end of the second outer curling needle.

[0009] In one embodiment of the utility model, the mold locking mechanism also includes a mold locking moving component and a mold locking rotating component, the mold locking moving component is movably arranged relative to the mold locking connecting component, the mold locking rotating component is rotationally connected to the mold locking moving component, the mold locking component is connected to the mold locking rotating component, the mold locking moving component is provided with a first abutting portion, and the mold locking connecting component is provided with a second abutting portion; the mold locking mechanism also includes a mold locking elastic component, and both ends of the mold locking elastic component respectively abut the first abutting portion and the second abutting portion.

[0010] In one embodiment of the utility model, it also includes a variable diameter positioning mechanism, which includes a variable diameter positioning drive assembly and a variable diameter positioning abutment component. The driving end of the variable diameter positioning drive assembly is connected to the variable diameter positioning abutment component. The variable diameter positioning drive assembly is used to drive the variable diameter positioning abutment component to be relatively close to or relatively away from the clamping mechanism and drive the clamping component to move.

[0011] In one embodiment of the utility model, it also includes a winding needle adjustment mechanism, which includes a first adjustment moving component, an adjustment rotating component, a second adjustment moving component, a limit component and a second outer needle adjustment component; the first adjustment moving component is capable of moving; the adjustment rotating component is rotationally connected to the first adjustment moving component, and the adjustment rotating component is connected to the winding needle mechanism; the second adjustment moving component is movably connected to the adjustment rotating component; the limit component is used to block the second adjustment moving component during the movement of the first adjustment moving component; the second outer needle adjustment component is connected to the second adjustment moving component; the winding needle mechanism also includes a first outer needle adjustment component, the first outer needle adjustment component is connected to the first outer winding needle, and the first outer needle adjustment component abuts against the second outer needle adjustment component.

[0012] In one embodiment of the utility model, the needle winding mechanism also includes a first inner winding needle, a second inner winding needle and a first inner needle adjustment component, the first inner winding needle and the second inner winding needle are both arranged between the first outer winding needle and the second outer winding needle, the first inner winding needle and the second inner winding needle are relatively arranged, and the first inner winding needle can be relatively close to or relatively far away from the second inner winding needle, and the first inner needle adjustment component is connected to the first inner winding needle; the needle winding adjustment mechanism also includes a second inner needle adjustment component, the second inner needle adjustment component is adapted to the first inner needle adjustment component, and the second inner needle adjustment component is abutted against the first inner needle adjustment component.

[0013] In one embodiment of the present invention, the second outer needle adjustment component and the second inner needle adjustment component are both configured as cams, and the first outer needle adjustment component and the first inner needle adjustment component both have inclined surfaces that match the corresponding cams.

[0014] In one embodiment of the utility model, it also includes a turret device, which is rotatable, and is provided with a winding work station, a gluing work station and a blanking work station, and the winding work station, the gluing work station and the blanking work station are provided with the winding needle mechanism and the locking mechanism.

[0015] In one embodiment of the utility model, two variable diameter positioning mechanisms are provided, and the two variable diameter positioning mechanisms are respectively arranged corresponding to the winding operation station and the gluing operation station; wherein, the two variable diameter positioning abutment components are spliced ​​around the axis of the turret device to form an annular portion, and the annular portion includes a first end, a second end and an abutment end face, and positioning guide inclined surfaces are provided on the first end and the second end.

[0016] The above technical solution of the utility model has the following advantages compared with the prior art:

[0017] The winding device of the utility model is provided with a clamping mechanism that can perform follow-up compensation as the outer winding needle of the winding needle mechanism changes diameter, thereby effectively improving the diameter change accuracy and ensuring a good final diameter change effect. It can be better applied to the winding molding of small-sized battery cells and ensure high product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein:

[0019] Figure 1 This is one of the structural schematic diagrams of the winding device in the preferred embodiment of the utility model;

[0020] Figure 2This is a structural schematic diagram of the needle winding mechanism in the preferred embodiment of the utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the mold locking component in a preferred embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the mold locking component in the preferred embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the mold locking mechanism in the preferred embodiment of the utility model;

[0024] Figure 6 This is one of the structural schematic diagrams of the variable diameter positioning mechanism in the preferred embodiment of the utility model;

[0025] Figure 7 This is the second structural schematic diagram of the winding device in the preferred embodiment of the utility model;

[0026] Figure 8 This is a schematic structural diagram of a variable diameter positioning abutment component in a preferred embodiment of the utility model;

[0027] Fig. 9 This is the second structural schematic diagram of the variable diameter positioning mechanism in the preferred embodiment of the utility model.

[0028] Explanation of the reference numerals in the specification: 10, needle winding mechanism; 11, first outer needle winding; 111, first outer needle connecting bevel; 12, second outer needle winding; 13, first outer needle adjusting component; 14, first inner needle winding; 141, first inner needle connecting bevel; 15, second inner needle winding; 16, first inner needle adjusting component; 20, mold locking mechanism; 21, mold locking moving component; 211, first abutment portion; 212, mold locking abutment roller; 22, mold locking rotating component; 221, locking convex portion; 23, mold locking component; 231, outer needle ring groove; 2311, second outer needle connecting bevel; 2312, accommodating area; 2313, limiting area; 232, inner needle groove; 2321, second inner needle connecting bevel Surface; 24, locking mold connecting component; 241, locking recess; 242, second abutment portion; 25, locking mold elastic component; 30, winding needle adjustment mechanism; 31, first adjustment moving component; 32, adjustment rotating component; 33, second adjustment moving component; 331, second outer needle adjustment component; 332, second inner needle adjustment component; 34, limit assembly; 40, variable diameter positioning mechanism; 41, variable diameter positioning driving component; 42, variable diameter positioning abutment component; 421, abutment end face; 422, first end; 423, second end; 424, positioning guide inclined surface; 50, turret device; 511, winding operation station; 512, gluing operation station; 513, unloading operation station. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0030] Reference Figure 1 As shown, the utility model discloses a winding device, including a winding needle mechanism 10 and a clamping component 23.

[0031] Reference Figure 2 As shown, the winding needle mechanism 10 is used to realize the winding and forming of the material strip. Specifically, the winding needle mechanism 10 includes a first outer winding needle 11 and a second outer winding needle 12 that are relatively arranged. The first outer winding needle 11 can be relatively close to or relatively far away from the second outer winding needle 12 to realize the diameter adjustment of the outer winding needle. The first outer winding needle 11 and the second outer winding needle 12 are both prior arts. Those skilled in the art can set their specific shapes and sizes according to actual needs, which will not be repeated. Those skilled in the art can set the specific diameter adjustment method of the first outer winding needle 11 and the second outer winding needle 12 according to actual needs, which will not be repeated.

[0032] Reference Figure 5 As shown, the clamping mechanism 20 is used to provide support for the free end of the outer winding needle, increase the stability of the equipment during the winding process of the battery core, and ensure the high quality of the final product. Specifically, the clamping mechanism 20 includes a clamping connection component 24 and a clamping component 23. The clamping component 23 is adapted to the winding needle mechanism 10 and can be driven close to or away from the clamping connection component 24. Through the setting of the clamping mechanism 20, on the one hand, the clamping component 23 can provide support and increase stability for the free end of the outer winding needle during winding, thereby ensuring the quality of the finished battery core. On the other hand, when the error data of the pole ear has been confirmed and the diameter change of the outer winding needle is adjusted accordingly, the relative movement of the clamping component 23 is used to achieve the follow-up compensation of the diameter change. The diameter change accuracy is effectively improved and the final diameter change effect is ensured. Those skilled in the art can set the specific structure of the clamping component 23 according to actual needs to achieve adaptation with the free end of the outer winding needle.

[0033] Among them, a locking recess 241 is provided on the mold locking connecting part 24, and a locking protrusion 221 adapted to the locking recess 241 is provided on the mold locking part 23; the mold locking part 23 switches between the first position and the second position set along the axial direction of the needle winding mechanism 10. When the mold locking part 23 is in the first position, the mold locking part 23 cooperates with the needle winding mechanism 10, and the locking protrusion 221 is separated from the locking recess 241; when the mold locking part 23 is in the second position, the mold locking part 23 is separated from the needle winding mechanism 10, and the locking protrusion 221 is matched with the locking recess 241. This structure can accurately realize the positioning of the mold locking part 23, and prevent the mold locking part 23 from being offset when the material is unloaded and the needle is pulled out.

[0034] In the winding device described in the utility model, when winding, the needle winding mechanism 10 rotates and drives the mold locking component 23 to rotate to wind the material strip. After completing the winding of a battery cell, the tab misalignment data is obtained and the diameter change data of the outer needle winding is obtained accordingly. Then the first outer needle winding 11 is relatively close to or relatively far away from the second outer needle winding 12, changing the circumference of the outer needle winding in the needle winding mechanism 10 and realizing the diameter change adjustment of the outer needle winding. Correspondingly, the first outer needle winding 11 moves, so that the mold locking component 23 moves axially synchronously to realize follow-up compensation.

[0035] As you can imagine, smaller battery cells require higher precision during production than larger ones. Due to the difference in specifications, errors of the same size may meet the precision requirements for larger battery cells, while smaller ones fall far short of the precision requirements. For this reason, existing winding equipment for larger battery cells is often difficult to directly apply to the winding production of smaller battery cells, making it difficult to ensure product quality.

[0036] The winding device of the utility model is provided with a clamping mechanism 20 that can perform follow-up compensation as the outer winding needle of the winding needle mechanism 10 changes diameter, thereby effectively improving the diameter change accuracy and ensuring a good final diameter change effect. It can be better applied to the winding molding of small-sized battery cells and ensure high product quality.

[0037] Reference Figure 3 and Figure 4 As shown, in some embodiments of the winding device described in the utility model, the free end of the first outer winding needle 11 is provided with a first outer needle connection bevel 111. An outer needle ring groove 231 is formed on the locking component 23, and the outer needle ring groove 231 is used to accommodate the free end of the first outer winding needle 11 and the free end of the second outer winding needle 12. The outer needle ring groove 231 is provided with a second outer needle connection bevel 2311 adapted to the first outer needle connection bevel 111. By setting the first outer needle connection bevel 111 and the second outer needle connection bevel 2311, it can be ensured that the locking component 23 and the first outer winding needle 11 can directly achieve more smooth docking and diameter adjustment, thereby improving production efficiency and further improving stability. It should be noted that those skilled in the art can set the shape of the specific outer needle connection bevel according to actual needs, for example, setting its cross-sectional shape to a straight structure or an arc structure to adapt to different docking requirements.

[0038] Further, see Figure 5As shown, in some embodiments of the winding device described in the utility model, the outer needle ring groove 231 includes a receiving area 2312 and a limiting area 2313, the receiving area 2312 is used to receive the free end of the first outer winding needle 11 and the free end of the second outer winding needle 12, and the limiting area 2313 is used to form the limit of the free end of the first outer winding needle 11 and the free end of the second outer winding needle 12. It should be noted that the limiting area 2313 is not necessarily formed by depression, but can also be formed by depression to form only the receiving area 2312, and the rest of the part is used as the limiting area 2313. By setting the limiting area 2313, the stability of the outer winding needle during the winding process can be effectively ensured, thereby improving product quality.

[0039] Further, see Figure 5 and Figure 6 As shown, in some embodiments of the winding device described in the utility model, the mold locking mechanism 20 also includes a mold locking moving component 21 and a mold locking rotating component 22. The mold locking moving component 21 is movably arranged relative to the mold locking connecting component 24, the mold locking rotating component 22 is rotationally connected to the mold locking moving component 21, and the mold locking component 23 is connected to the mold locking rotating component 22. Those skilled in the art can set the specific components of the mold locking moving component 21 and the mold locking rotating component 22 according to actual needs to achieve corresponding axial movement and rotation, such as a ball structure, a bearing structure, etc., which will not be repeated. By setting this structure, the mold locking component 23 can be rotated with the winding needle mechanism 10 to achieve winding. When the locking protrusion 221 is separated from the locking recess 241, the mold locking rotating component 22 can rotate; when the locking protrusion 221 cooperates with the locking recess 241, the mold locking rotating component 22 will be prevented from rotating, which can prevent the mold locking component 23 from deviating during the separation process from the outer winding needle. It can be imagined that although the setting of the limiting area 2313 can improve the stability during the winding process, when unloading and pulling out the needle, the needle winding mechanism 10 moves along its own axis and the outer needle is separated from the clamping part 23. In this process, regardless of whether the turret device 50 is provided, there will be a certain offset between the outer needle and the accommodating area 2312. The existence of the offset means that when the material is fed and the needle is threaded, the accommodating area 2312 needs to be repositioned to achieve the docking of the outer needle and the accommodating area 2312. To this end, the setting of the locking protrusion 221 and the locking recess 241 effectively ensures that the clamping part 23 will not be offset during the separation process from the outer needle. It can save the time of repositioning and improve production efficiency.

[0040] The mold locking moving component 21 is provided with a first abutting portion 211, and the mold locking connecting component 24 is provided with a second abutting portion 242; the mold locking mechanism 20 also includes a mold locking elastic component 25, and the two ends of the mold locking elastic component 25 respectively abut the first abutting portion 211 and the second abutting portion 242. The mold locking elastic component 25 includes a first elastic state and a second elastic state. When the mold locking elastic component 25 is in the first elastic state, the mold locking elastic component 25 drives the mold locking moving component 21 to move axially and causes the mold locking mechanism 20 to enter a locked state from a free state; when the mold locking elastic component 25 is in the second elastic state, the first abutting portion 211 and the second abutting portion 242 compress the locking elastic component and cause the mold locking mechanism 20 to enter a free state from a locked state. The setting of the mold locking elastic component 25 provides elastic force for the mold locking moving component 21, effectively ensuring that when the mold locking component 23 is separated from the outer winding needle, the locking protrusion 221 and the locking recess 241 can be docked and locked to prevent the displacement caused by the rotation of the mold locking component 23, thereby saving the time of repositioning and improving production efficiency. The structure is simple and effective, and the space utilization rate is high.

[0041] Reference Figure 6 As shown, the winding device described in the utility model, in some embodiments, also includes a variable diameter positioning mechanism 40, the variable diameter positioning mechanism 40 includes a variable diameter positioning drive component 41 and a variable diameter positioning abutment component 42, the driving end of the variable diameter positioning drive component 41 is connected to the variable diameter positioning abutment component 42, and the variable diameter positioning drive component 41 is used to drive the variable diameter positioning abutment component 42 to be relatively close to or relatively far away from the clamping mechanism 20, and drive the clamping component 23 to move axially. By setting the variable diameter positioning mechanism 40, the clamping moving component 21 is provided with axial positioning support during winding molding, which effectively avoids its axial movement during the winding process and improves the production quality. At the same time, it can also cooperate with the clamping elastic component 25 to achieve the follow-up compensation of the clamping component 23, with high space utilization and good effect. Those skilled in the art can set the variable diameter positioning drive component 41 according to actual needs, such as the combination of a motor, a screw rod and a guide column, etc., which will not be repeated.

[0042] Reference Figure 1As shown, in some embodiments of the winding device described in the utility model, the winding needle adjustment mechanism 30 further includes a first adjustment moving component 31, an adjustment rotating component 32, a second adjustment moving component 33, a stopper component 34 and a second outer needle adjustment component 331. The first adjustment moving component 31 can move along its own axial direction, the adjustment rotating component 32 is connected to the first adjustment moving component 31, and the adjustment rotating component 32 can rotate around its own axis, the adjustment rotating component 32 is connected to the winding needle mechanism 10, the second adjustment moving component 33 is connected to the adjustment rotating component 32, and the second adjustment moving component 33 can move along its own axial direction relative to the adjustment rotating component 32, and the stopper component 34 is used to block the second adjustment moving component 33 during the movement of the first adjustment moving component 31; the second outer needle adjustment component 331 is connected to the second adjustment moving component 33, and the second outer needle adjustment component 331 abuts against the first outer needle adjustment component 13. The needle winding mechanism 10 also includes a first outer needle adjustment component 13, which is connected to the first outer needle 11, and a second outer needle adjustment component 331 is in contact with the first outer needle adjustment component 13. The first outer needle adjustment component 13 is used to cooperate with the second outer needle adjustment component 331 to achieve variable diameter adjustment for the outer needle, and different outer needle adjustment components can be set according to actual needs, as long as variable diameter adjustment can be achieved. Through this structure, variable diameter adjustment of the needle winding mechanism 10 can be effectively achieved. At the same time, the needle insertion and extraction action of the needle winding mechanism 10 can also be achieved through the first adjustment moving component 31, which has high space utilization, small and compact size, and is more compatible with the production of small-sized battery cells. Those skilled in the art can set the first adjustment moving component 31, the adjustment rotating component 32, the second adjustment moving component 33 and the limit component 34 according to actual needs to achieve the functions of movement, rotation and limitation. Preferably, the first adjusting moving component 31 is set as a combination of components such as a motor, a screw and a housing, the adjusting rotating component 32 is set as a combination of components such as a direct drive motor, a bearing and a housing, the second adjusting moving component 33 is set as a combination of components such as a spring, a guide column and a housing, and the limiting component 34 is set as a combination of a cylinder and a limiting plate.

[0043] Further, see Figure 2 and Figure 3As shown, in some embodiments of the winding device described in the utility model, the winding needle mechanism 10 also includes a first inner winding needle 14, a second inner winding needle 15 and a first inner needle adjustment component 16. The first inner winding needle 14 and the second inner winding needle 15 are both arranged between the first outer winding needle 11 and the second outer winding needle 12. The first inner winding needle 14 and the second inner winding needle 15 are arranged relatively to each other, and the first inner winding needle 14 can be relatively close to or relatively far away from the second inner winding needle 15. The first inner needle adjustment component 16 is connected to the first inner winding needle 14. The first inner winding needle 14 and the second inner winding needle 15 are both prior art. Those skilled in the art can set their specific shapes and sizes according to actual needs, which will not be repeated. The winding needle adjustment mechanism 30 also includes a second inner needle adjustment component 332. The second inner needle adjustment component 332 is adapted to the first inner needle adjustment component 16, and the second inner needle adjustment component 332 is in contact with the first inner needle adjustment component 16. The first inner needle adjustment component 16 is used to cooperate with the second inner needle adjustment component 332 to achieve the opening and closing needle adjustment of the inner winding needle. Different inner needle adjustment components can be set according to actual needs, as long as the opening and closing needle adjustment can be achieved. When in use, the winding needle adjustment mechanism 30 drives the winding needle mechanism 10 to move, and the second inner needle adjustment component 332 cooperates with the first inner needle adjustment component 16 to drive, so that the first inner winding needle 14 is relatively close to or relatively far away from the second inner winding needle 15, and the opening and closing of the inner winding needle is achieved, thereby achieving the clamping or loosening of the material belt. Preferably, the second inner needle adjustment component 332 is also connected to the second adjustment moving component 33 to save energy consumption and improve space utilization.

[0044] Furthermore, in some embodiments of the winding device described in the present invention, the second outer needle adjustment component 331 and the second inner needle adjustment component 332 are both configured as cams, and the first outer needle adjustment component 13 and the first inner needle adjustment component 16 both have inclined surfaces that match the corresponding cams. The specific inclination angle of the inclined surface can be set according to actual needs to meet the diameter change requirements, which will not be described in detail.

[0045] Further, see Figure 3 As shown, in some embodiments of the winding device described in the utility model, the free end of the first inner winding needle 14 is provided with a first inner needle connection bevel 141. An inner needle groove 232 is formed on the clamping part 23, and the inner needle groove 232 is used to accommodate the free end of the first inner winding needle 14. The inner needle groove 232 is provided with a second inner needle connection bevel 2321 adapted to the first inner needle connection bevel 141. The setting of the inner needle groove 232 effectively provides support for the inner winding needle and improves stability. At the same time, the setting of the first inner needle connection bevel 141 and the second inner needle connection bevel 2321 ensures that the inner winding needle can enter the inner needle groove 232 more easily.

[0046] Reference Figure 7As shown, the winding equipment described in the utility model, in some embodiments, further includes a turret device 50, the turret device 50 can rotate around its own axis, and at least a winding work station 511, a gluing work station 512 and a material unloading work station 513 are provided on the turret device 50, and the winding work station 511, the gluing work station 512 and the material unloading work station 513 are arranged around the axis of the turret device 50 in sequence, and the winding work station 511, the gluing work station 512 and the material unloading work station 513 are all provided with a winding needle mechanism 10, a clamping mechanism 20 and a winding needle adjustment mechanism 30. The winding work station 511 is used for winding and forming the battery cell, the gluing work station 512 is used for applying tape to the wound battery cell, and the material unloading work station 513 is used for unloading the battery cell with the tape unloaded. The turret device 50 is a prior art, and those skilled in the art can set its specific structure according to actual needs, and will not be repeated.

[0047] Further, see Figure 7 , Figure 8 and Fig. 9 As shown, in some embodiments of the winding device described in the utility model, two variable diameter positioning mechanisms 40 are provided, and the two variable diameter positioning mechanisms 40 are respectively provided corresponding to the winding operation station 511 and the gluing operation station 512. Since the clamping component 23 of the blanking operation station 513 does not need to be docked with the winding needle mechanism 10, the variable diameter positioning mechanism 40 can be omitted to save cost and space. The variable diameter positioning abutment component 42 is provided as an annular plate structure, and the two variable diameter positioning abutment components 42 are arranged in sequence along the circumferential direction around the axis of the turret device 50 to form an annular portion. The annular portion includes an abutment end face 421, a first end 422 and a second end 423. The abutment end face 421 is used to form a limit of the clamping moving component 21, and the first end 422 and the second end 423 are both provided with a positioning guide inclined surface 424. The provision of two variable diameter positioning mechanisms 40 avoids interference between one of them and the other during the variable diameter adjustment.

[0048] Furthermore, the mold locking moving assembly 21 includes a mold locking abutting roller 212, which is rotatably arranged at one end of the mold locking moving assembly 21 close to the variable diameter positioning abutting component 42, and when the mold locking abutting roller 212 contacts the abutting end surface 421, the mold locking abutting roller 212 can roll along the abutting end surface 421. The arrangement of the positioning guide inclined surface 424 facilitates the docking of the mold locking abutting roller 212 and improves production efficiency.

[0049] Working principle:

[0050] At the winding operation station 511, the first adjustment moving assembly 31 drives the winding needle mechanism 10 to thread the needle. After the inner winding needle clamps the material strip, the winding needle mechanism 10 rotates under the drive of the adjustment rotating assembly 32 to perform winding molding of the battery cell. During the molding process, the clamping component 23 provides support for the inner and outer winding needles.

[0051] After winding is completed, the turret device 50 drives the corresponding winding needle mechanism 10, the clamping mechanism 20 and the winding needle adjustment mechanism 30 to rotate to the gluing operation station 512 for tape application. After tape application is completed, the turret device 50 drives the corresponding winding needle mechanism 10, the clamping mechanism 20 and the winding needle adjustment mechanism 30 to rotate to the unloading operation station 513 for unloading. According to the error data of the battery cell tab, the outer winding needle is adjusted in diameter and the clamping component 23 is compensated for accordingly to ensure the production quality of the subsequent battery cells.

[0052] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A winding device, characterized in that: include: The needle winding mechanism comprises a first outer winding needle and a second outer winding needle arranged opposite to each other, wherein the first outer winding needle can be relatively close to or relatively far from the second outer winding needle; A mold locking mechanism, comprising a mold locking connecting component and a mold locking component, wherein the mold locking component is adapted to the needle winding mechanism and can be driven to move closer to or away from the mold locking connecting component; Wherein, a locking recess is provided on the locking mold connecting component, and a locking protrusion adapted to the locking recess is provided on the locking mold component; the locking mold component switches between a first position and a second position arranged along the axial direction of the winding needle mechanism, and when the locking mold component is in the first position, the locking mold component cooperates with the winding needle mechanism, and the locking protrusion is separated from the locking recess; when the locking mold component is in the second position, the locking mold component is separated from the winding needle mechanism, and the locking protrusion is matched with the locking recess.

2. The winding device according to claim 1, characterized in that: The free end of the first outer curling needle is provided with a first outer needle docking bevel; The locking component is recessed to form an outer needle ring groove, which is used to accommodate the free ends of the first outer curling needle and the second outer curling needle. The outer needle ring groove is provided with a second outer needle connection bevel that is adapted to the first outer needle connection bevel.

3. The winding device according to claim 2, characterized in that: The outer needle ring groove includes a accommodating area and a limiting area, the accommodating area is used to accommodate the free end of the first outer curling needle and the free end of the second outer curling needle, and the limiting area is used to form the limitation of the free end of the first outer curling needle and the free end of the second outer curling needle.

4. The winding device according to claim 3, characterized in that: The mold locking mechanism also includes a mold locking moving component and a mold locking rotating component. The mold locking moving component is movably arranged relative to the mold locking connecting component. The mold locking rotating component is rotationally connected to the mold locking moving component. The mold locking component is connected to the mold locking rotating component. The mold locking moving component is provided with a first abutting portion, and the mold locking connecting component is provided with a second abutting portion. The mold locking mechanism also includes a mold locking elastic component, and two ends of the mold locking elastic component respectively abut the first abutting portion and the second abutting portion.

5. The winding device according to claim 1, characterized in that Also includes: The variable diameter positioning mechanism comprises a variable diameter positioning drive assembly and a variable diameter positioning abutment component. The driving end of the variable diameter positioning drive assembly is connected to the variable diameter positioning abutment component. The variable diameter positioning drive assembly is used to drive the variable diameter positioning abutment component to be relatively close to or relatively away from the clamping mechanism and drive the clamping component to move.

6. The winding device according to claim 1, characterized in that It also includes a needle winding adjustment mechanism, which includes a first adjustment moving component, an adjustment rotating component, a second adjustment moving component, a limit component and a second outer needle adjustment component; the first adjustment moving component is movable; the adjustment rotating component is rotationally connected to the first adjustment moving component, and the adjustment rotating component is connected to the needle winding mechanism; the second adjustment moving component is movably connected to the adjustment rotating component; the limit component is used to block the second adjustment moving component during the movement of the first adjustment moving component; the second outer needle adjustment component is connected to the second adjustment moving component; The needle winding mechanism further includes a first outer needle adjusting component, the first outer needle adjusting component is connected to the first outer needle winding, and the first outer needle adjusting component is in abutment with the second outer needle adjusting component.

7. The winding device according to claim 6, characterized in that: The needle winding mechanism also includes a first inner winding needle, a second inner winding needle and a first inner needle adjusting component, the first inner winding needle and the second inner winding needle are both arranged between the first outer winding needle and the second outer winding needle, the first inner winding needle and the second inner winding needle are arranged opposite to each other, and the first inner winding needle can be relatively close to or relatively far away from the second inner winding needle, and the first inner needle adjusting component is connected to the first inner winding needle; The needle winding adjustment mechanism further includes a second inner needle adjustment component, the second inner needle adjustment component is adapted to the first inner needle adjustment component, and the second inner needle adjustment component abuts against the first inner needle adjustment component.

8. The winding device according to claim 7, characterized in that: The second outer needle adjusting component and the second inner needle adjusting component are both configured as cams, and the first outer needle adjusting component and the first inner needle adjusting component both have inclined surfaces that match the corresponding cams.

9. The winding device according to any one of claims 1 to 8, characterized in that Also includes: A turret device, the turret device is rotatably arranged, a winding work station, a gluing work station and a material unloading work station are provided on the turret device, and the winding work station, the gluing work station and the material unloading work station are provided with the needle winding mechanism and the clamping mechanism.

10. The winding device according to claim 9, characterized in that: There are two variable diameter positioning mechanisms, which are respectively arranged corresponding to the winding operation station and the gluing operation station; wherein, two variable diameter positioning abutment components are spliced ​​around the axis of the turret device to form an annular portion, and the annular portion includes a first end, a second end and an abutment end face, and positioning guide inclined surfaces are arranged on the first end and the second end.

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