Winding needle and battery cell winding machine
By designing a rolling needle with a movable inner clamping needle and a groove structure, the problem of cumbersome needle insertion and needle insertion in the battery cell winding machine is solved, and efficient clamping and pin insertion of the material belt is achieved, which improves processing efficiency and reduces costs.
Patent Information
- Application Number
- CN202421568877.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-04
AI Technical Summary
During the winding process of the existing battery cell winding machine, the needle insertion and needle insertion are complicated, resulting in low processing efficiency.
A rolling needle is designed, including the first and second half needle assemblies, and a groove is provided on the clamping surface of the inner clamping needle, and the pushing member can move in the groove, so as to realize the synchronous pushing and clamping of the material belt, and reduce the telescopic movement of the rolling needle.
By simplifying the movement of the needle roll, the efficiency of the tape clamping and pin insertion is improved, the cost of the needle roll is reduced, and the overall processing efficiency of the battery cell winding machine is improved.
Smart Images
Figure CN222826450U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of winding equipment, and in particular to a winding needle and a battery cell winding machine. Background Art
[0002] The battery cell winding machine is a device used to wind the diaphragm, pole piece and other material strips on the winding needle according to a preset rule to make the battery cell. In the process of winding the material strip on the winding needle, the smooth winding of the winding needle is very important.
[0003] In order to make the winding needle start rolling smoothly, it is necessary to ensure that the material strip can smoothly enter the gap of the winding needle to complete the needle insertion action. Before the needle insertion action, it is necessary to ensure that the winding needle is retracted. When the needle is inserted, the winding needle needs to be extended so that the material strip can just enter the gap of the winding needle through the opening connected to the gap, and then it can be rolled. However, this type of needle insertion method has many auxiliary actions (such as winding needle retraction and extension actions), which makes the efficiency of the battery cell winding machine in processing batteries low. Utility Model Content
[0004] The present application discloses a winding needle and a battery cell winding machine, which can improve the efficiency of processing battery cells.
[0005] In order to achieve the above objectives, in a first aspect, the present application discloses a winding needle, comprising:
[0006] Needle coil holder;
[0007] A first half needle assembly, the first half needle assembly is arranged on the needle winding seat, the first half needle assembly comprises a first inner clamping needle and a first outer winding needle; and,
[0008] a second half needle assembly, the second half needle assembly being disposed on the needle winding seat and being opposite to the first half needle assembly along a first direction, the second half needle assembly comprising a second inner clamping needle and a second outer winding needle, at least one of the first inner clamping needle and the second inner clamping needle being movable in a direction away from or close to the other along the first direction, so that the clamping surface of the first inner clamping needle and the clamping surface of the second inner clamping needle are moved away from each other to form a gap for the material tape to enter or are moved close to each other to clamp the material tape, the first outer winding needle and the second outer winding needle jointly form a winding peripheral wall, and the winding peripheral wall is used for the material tape to be wound thereon;
[0009] Wherein, a groove is provided on the clamping surface of the first inner clamping needle and / or the clamping surface of the second inner clamping needle, and the groove is used to accommodate a pushing member that pushes the material strip into the gap.
[0010] Optionally, there are multiple grooves, and the multiple grooves are arranged at intervals along the axial direction of the winding peripheral wall.
[0011] Optionally, the groove provided on the clamping surface of the first inner clamping needle penetrates the first inner clamping needle along a direction parallel to the clamping surface and perpendicular to the axial direction of the winding peripheral wall, and / or the groove provided on the clamping surface of the second inner clamping needle penetrates the second inner clamping needle along a direction parallel to the clamping surface and perpendicular to the axial direction of the winding peripheral wall.
[0012] Optionally:
[0013] One of the clamping surface of the first inner clamping needle and the clamping surface of the second inner clamping needle is provided with the groove, and the other is a plane;
[0014] or,
[0015] The groove is provided on the clamping surface of the first inner clamping needle and the clamping surface of the second inner clamping needle, and the groove provided on the clamping surface of the first inner clamping needle and the groove provided on the clamping surface of the second inner clamping needle are opposite to each other along the first direction.
[0016] Optionally, a concave-convex structure is provided on the clamping surface of the first inner clamping needle, and / or a concave-convex structure is provided on the clamping surface of the second inner clamping needle.
[0017] Optionally, the concave-convex structure is sawtooth-shaped, including a plurality of convex strips, each of which extends along the axial direction of the winding peripheral wall, and the plurality of convex strips are arranged in sequence along a direction perpendicular to the axial direction of the winding peripheral wall.
[0018] Optionally, at least one of the first outer curling needle and the second outer curling needle can be moved in the first direction away from or closer to the other one to adjust the diameter of the circumscribed circle of the winding peripheral wall.
[0019] Optionally, the second inner clamping needle and the second outer rolling needle are both fixedly disposed on the rolling needle seat, and the first inner clamping needle and the first outer rolling needle are respectively slidably disposed on the rolling needle seat along the first direction.
[0020] Optionally, a first elastic member is provided between the first inner clamping needle and the winding needle seat, and the first elastic member is used to provide an elastic force to the first inner clamping needle to move away from the second inner clamping needle along the first direction.
[0021] Optionally, a second elastic member is provided between the first outer curling needle and the curling needle seat, and the second elastic member is used to provide an elastic force to the first outer curling needle to approach the second outer curling needle along the first direction.
[0022] Optionally, the needle coiling seat comprises:
[0023] The first half roll needle holder;
[0024] A second half-rolled needle seat, the second half-rolled needle seat and the first half-rolled needle seat are arranged opposite to each other along the first direction, the second inner clamping needle and the second outer clamping needle are both fixedly arranged on the second half-rolled needle seat, the first half-rolled needle seat and the second half-rolled needle seat are enclosed to form a sliding cavity, the first inner clamping needle is arranged on the first movable seat, the first outer clamping needle is arranged on the second movable seat, the first movable seat and the second movable seat are both slidably arranged in the sliding cavity along the first direction, the first elastic member is clamped between the second half-rolled needle seat and the first movable seat along the first direction, and the second elastic member is clamped between the first half-rolled needle seat and the second movable seat along the first direction.
[0025] Optionally, a first protrusion is provided on the first movable seat, a first perforation is provided on the first half-roll needle seat, and the first protrusion can slide out of the first perforation along the first direction; a second protrusion is provided on the second movable seat, a second perforation is provided on the second half-roll needle seat, and the second protrusion can slide out of the second perforation along the first direction.
[0026] Optionally, a cutter avoidance groove is provided on one of the first outer curling needle and the second outer curling needle.
[0027] Optionally, the cross-section of the winding peripheral wall is rhombus-shaped.
[0028] In a second aspect, the present application discloses a battery cell winding machine, comprising a winding needle as described in any one of the first aspects above.
[0029] Compared with the prior art, the beneficial effects of this application are:
[0030] In the present application, the function of clamping the material strip can be achieved by moving at least one of the first inner clamping needle and the second inner clamping needle along the first direction toward the other. After the material strip is clamped, the winding needle can be rotated around the axis of the winding wall to complete the winding action, thereby achieving the purpose of winding the material strip on the winding wall of the winding needle. In this process, the first inner clamping needle and the second inner clamping needle of the winding needle can be fully utilized to complete the action of clamping the material strip, thereby reducing the cost of the winding needle.
[0031] In addition, by providing a groove on the clamping surface of the first inner clamping needle and / or the clamping surface of the second inner clamping needle, when it is necessary to allow the material tape to enter the gap to complete the action of inserting the needle, it is only necessary to move the pushing member in the direction close to the groove to synchronously push the material tape into the gap, thereby realizing the action of inserting the needle. During the whole process, the winding needle does not need to extend and retract back and forth along the axial direction of the winding wall to allow the material tape to enter the gap to complete the action of inserting the needle. Therefore, the efficiency of inserting the needle can be improved to a certain extent. Based on this, when the winding needle is used in a battery cell winding machine, the efficiency of the battery cell winding machine in processing the battery cell can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0033] Figure 1 It is a schematic diagram of the structure of a winding needle provided in an embodiment of the present application;
[0034] Figure 2 yes Figure 1 A schematic diagram of the structure of the winding needle along the negative direction of the X-axis;
[0035] Figure 3 is a schematic diagram of the structure of a pushing member provided in an embodiment of the present application;
[0036] Figure 4 yes Figure 1 Schematic diagram of the structure of the needle coiling seat and the second half needle assembly (some mechanisms are omitted);
[0037] Figure 5 yes Figure 1 Schematic diagram of the structure of the needle coiling seat and the first half needle assembly (some mechanisms are omitted);
[0038] Figure 6 It is a structural schematic diagram of a battery cell winding machine provided in one embodiment of the present application.
[0039] Description of main reference numerals
[0040] 1- rolled needle seat; 10- first elastic member; 11- first half rolled needle seat; 110- sliding cavity; 111- first perforation; 12- second half rolled needle seat; 121- second perforation;
[0041] 2-first half needle assembly; 20-winding peripheral wall; 21-first inner clamping needle; 211-first moving seat; 2111-first protrusion; 22-first outer winding needle; 221-second moving seat; 2211-second protrusion;
[0042] 3-second half needle assembly; 30-clamping surface; 301-groove; 302-concave-convex structure; 3021-convex strip; 31-second inner clamping needle; 310-cutter avoidance groove; 32-second outer winding needle;
[0043] 4- Gap;
[0044] 5-Guide rod;
[0045] 100-winding needle; 200-battery cell winding machine;
[0046] T-pushing member; T1-pushing part. DETAILED DESCRIPTION
[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0048] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0049] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.
[0050] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0051] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.
[0052] The technical solution of the present application will be further described below in conjunction with specific embodiments and drawings.
[0053] Figure 1 is a schematic diagram of the structure of a winding needle 100 provided in an embodiment of the present application. Figure 2 yes Figure 1 Schematic diagram of the structure of the winding needle 100 viewed from the negative direction of the X-axis.
[0054] See also Figure 1 and Figure 2 The needle winding 100 comprises: a needle winding seat 1, a first half needle assembly 2 and a second half needle assembly 3, wherein the first half needle assembly 2 is arranged on the needle winding seat 1, the first half needle assembly 2 comprises a first inner clamping needle 21 and a first outer winding needle 22, and the second half needle assembly 3 is arranged on the needle winding seat 1 and along the first direction ( Figure 1 The second half needle assembly 3 is opposite to the first half needle assembly 2 in the middle Z-axis direction, and includes a second inner clamping needle 31 and a second outer winding needle 32. At least one of the first inner clamping needle 21 and the second inner clamping needle 31 can move away from or closer to the other along the first direction, so that the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31 are away from each other to form a gap 4 for the feed tape to enter, or are close to each other to clamp the feed tape. The first outer winding needle 22 and the second outer winding needle 32 jointly form a winding peripheral wall 20, and the winding peripheral wall 20 is used for the feed tape to be wound thereon.
[0055] The clamping surface 30 of the first inner clamping needle 21 and / or the clamping surface 30 of the second inner clamping needle 31 is provided with a groove 301 ( Figure 1 A groove 301 is provided on the clamping surface 30 of the first inner clamping needle 21, and the groove 301 is used to accommodate a pushing member that pushes the material strip into the gap 4.
[0056] In the present embodiment, when the material tape needs to be wound on the winding peripheral wall 20 of the winding needle 100, since at least one of the first inner clamping needle 21 and the second inner clamping needle 31 can be moved along the first direction away from or close to the other, first, at least one of the first inner clamping needle 21 and the second inner clamping needle 31 can be moved along the first direction away from the other, so that the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31 are away from each other to form a gap 4, and then, since the clamping surface 30 of the first inner clamping needle 21 and / or the clamping surface 30 of the second inner clamping needle 31 are provided with a groove 301, the pushing member can push the material tape in a direction close to the groove 301, and in the process of the pushing member moving in a direction close to the groove 301, the pushing member can synchronously push the material tape in a direction close to the gap 4.
[0057] When the pusher moves into the groove 301, the material strip will also enter the gap 4 under the pushing action of the pusher. After the material strip enters the gap 4, at least one of the first inner clamping needle 21 and the second inner clamping needle 31 can be moved along the first direction toward the other, thereby making the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31 approach each other to clamp the material strip. When the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31 approach each other to clamp the material strip, since the pusher is located in the groove 301, the pusher will not interfere with the action of the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31 approaching each other to clamp the material strip, thereby ensuring that the material strip can be stably clamped between the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31.
[0058] After the material strip is stably clamped between the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31, the pushing member can withdraw from the groove 301, and the winding needle 100 can rotate around the axis of the winding wall 20. During the rotation of the winding needle 100, the purpose of winding the material strip on the winding wall 20 of the winding needle 100 can be achieved.
[0059] Among them, since the function of clamping the material tape can be achieved by moving at least one of the first inner clamping needle 21 and the second inner clamping needle 31 along the first direction toward the other, after the material tape is clamped, the winding needle 100 can be rotated around the axis of the winding wall 20 to complete the winding action, and then the purpose of winding the material tape on the winding wall 20 of the winding needle 100 can be achieved. In this process, the first inner clamping needle 21 and the second inner clamping needle 31 of the winding needle 100 itself can be fully utilized to complete the action of clamping the material tape, thereby reducing the cost of the winding needle 100.
[0060] In addition, by providing a groove 301 on the clamping surface 30 of the first inner clamping needle 21 and / or the clamping surface 30 of the second inner clamping needle 31, when it is necessary to allow the material strip to enter the gap 4 to complete the action of inserting the pin, it is only necessary to move the pusher in the direction close to the groove 301 to synchronously push the material strip into the gap 4, thereby achieving the action of inserting the pin. During the whole process, the winding needle 100 does not need to retract and retract along the axial direction of the winding peripheral wall 20 to allow the material strip to enter the gap 4 to complete the action of inserting the pin. Therefore, the efficiency of inserting the pin can be improved to a certain extent. Based on this, when the winding needle 100 is applied to the battery cell winding machine 200, the efficiency of the battery cell winding machine 200 in processing the battery cell can be improved.
[0061] It should be noted that, considering that the groove 301 needs to accommodate the pushing member, the shape of the groove 301 can be set to match the shape of the pushing member. For example, when the shape of the pushing member is a rectangular parallelepiped, the shape of the groove 301 can be a rectangular parallelepiped.
[0062] When the winding needle 100 is applied to the battery cell winding machine 200, the material strip may be a diaphragm or a pole piece. Of course, when the winding needle 100 is applied to other equipment, the material strip may also be interpreted in other ways, which is not limited in this embodiment.
[0063] In some embodiments, see Figure 1 The number of the grooves 301 is multiple, and the multiple grooves 301 are arranged along the axial direction of the winding peripheral wall 20 ( Figure 1 X-axis direction) interval setting.
[0064] By setting the number of grooves 301 to be multiple and arranging the multiple grooves 301 at axial intervals along the winding peripheral wall 20, the grooves 301 can be distributed more widely on the clamping surface 30 along the axial direction of the winding peripheral wall 20, so that the size of the pushing member T can be designed to be larger, and the contact area between the pushing member and the material strip is larger when pushing the material strip, so that the material strip can be pushed into the gap 4 more stably.
[0065] It can be understood that when there are multiple grooves 301, considering that the pusher T needs to be accommodated in multiple grooves 301 at the same time, therefore, see Figure 3 , Figure 3 It is a structural schematic diagram of a pushing member T provided in an embodiment of the present application. The pushing member T may include a plurality of pushing portions T1, and the plurality of pushing portions T1 correspond one-to-one to the plurality of grooves 301. When the pushing member T includes a plurality of pushing portions T1, structurally speaking, the pushing member T may be roughly a tooth-like structure.
[0066] In some embodiments, see Figure 1 The groove 301 provided on the clamping surface 30 of the first inner clamping needle 21 is parallel to the clamping surface 30 and perpendicular to the axial direction of the winding peripheral wall 20 ( Figure 1 The first inner clamping needle 21 is penetrated in the Y-axis direction, and / or the groove 301 arranged on the clamping surface 30 of the second inner clamping needle 31 is penetrated in the second inner clamping needle 31 along the direction parallel to the clamping surface 30 and perpendicular to the axial direction of the winding peripheral wall 20.
[0067] Such arrangement allows the groove 301 to have openings at both ends along the axial direction parallel to the clamping surface 30 and perpendicular to the winding peripheral wall 20. In this way, the pushing member T can push the material strip into the gap 4 through any side of the two openings, and the pushing method is more flexible.
[0068] In some embodiments, see Figure 1 One of the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31 is provided with a groove 301, and the other is a plane ( Figure 1 A groove 301 is provided on the clamping surface 30 of the first inner clamping needle 21, and the clamping surface 30 of the second inner clamping needle 31 is a plane).
[0069] When a groove 301 is provided on one of the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31, and the other is a plane, when processing the groove 301, it is only necessary to process the groove 301 on one of the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31, which can reduce the processing workload to a certain extent.
[0070] Of course, in other embodiments, the groove 301 may be provided on both the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31, and the groove 301 provided on the clamping surface 30 of the first inner clamping needle 21 and the groove 301 provided on the clamping surface 30 of the second inner clamping needle 31 are opposite to each other along the first direction.
[0071] By providing a groove 301 on the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31, and making the groove 301 provided on the clamping surface 30 of the first inner clamping needle 21 and the groove 301 provided on the clamping surface 30 of the second inner clamping needle 31 opposite to each other along the first direction, even if the groove 301 provided on the clamping surface 30 of the first inner clamping needle 21 and the groove 301 provided on the clamping surface 30 of the second inner clamping needle 31 are both shallow in the direction perpendicular to the clamping surface 30, a larger space can be enclosed for accommodating the pushing member. Therefore, it can be avoided that the depth of the groove 301 provided on the clamping surface 30 is too deep due to the need to meet the size requirement of the groove 301, thereby affecting the mechanical strength of the first inner clamping needle 21 and the second inner clamping needle 31.
[0072] In order to ensure that the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31 are close to each other after clamping the material strip, the material strip can be firmly clamped between the two clamping surfaces 30 to avoid the material strip from slipping out abnormally from between the two clamping surfaces 30, in some embodiments, see Figure 2 A concavo-convex structure 302 is provided on the clamping surface 30 of the first inner clamping needle 21 , and / or a concavo-convex structure 302 is provided on the clamping surface 30 of the second inner clamping needle 31 .
[0073] By providing a concave-convex structure 302 on the clamping surface 30 of the first inner clamping needle 21 and / or providing a concave-convex structure 302 on the clamping surface 30 of the second inner clamping needle 31, the friction force of the clamping surface 30 can be enhanced, thereby preventing the material strip from slipping abnormally between the two clamping surfaces 30.
[0074] There are many ways to implement the concave-convex structure 302. For example, in one possible implementation, see Figure 2 The concave-convex structure 302 is sawtooth-shaped and includes a plurality of convex strips 3021. Each convex strip 3021 is wound around the peripheral wall 20 along the axial direction ( Figure 2 The plurality of convex strips 3021 extend in a direction perpendicular to the axial direction of the winding peripheral wall 20 ( Figure 2 Y-axis direction) are set in sequence.
[0075] By making each convex strip 3021 extend along the axial direction of the winding peripheral wall 20, the plurality of convex strips 3021 are sequentially arranged along the direction perpendicular to the axial direction of the winding peripheral wall 20, so that the plurality of convex strips 3021 can be arranged along the axial direction perpendicular to the winding peripheral wall 20 ( Figure 2 The friction force in the Y-axis direction is greater, and in actual application scenarios, the material strip is also more likely to slide abnormally out from between the two clamping surfaces 30 along this direction. Therefore, under the action of greater friction force, the situation where the material strip slides abnormally out from between the two clamping surfaces 30 can be better avoided.
[0076] In order to facilitate the removal of the material tape wound on the winding peripheral wall 20 from the winding peripheral wall 20, in some embodiments, see Figure 2 , at least one of the first outer curling needle 22 and the second outer curling needle 32 is along the first direction ( Figure 2 The outer surface of the rotating shaft 20 can be moved in a direction away from or close to the other direction (in the Z-axis direction) to adjust the diameter of the circumscribed circle of the winding peripheral wall 20.
[0077] By allowing at least one of the first outer winding needle 22 and the second outer winding needle 32 to move along the first direction away from or closer to the other, when it is necessary to remove the material tape wound on the winding wall 20 from the winding wall 20, it is only necessary to move at least one of the first outer winding needle 22 and the second outer winding needle 32 along the first direction toward the other, so that the diameter of the circumscribed circle of the winding wall 20 can be reduced, thereby making the material tape wound on the winding wall 20 looser, which is conducive to removing the material tape wound on the winding wall 20 from the winding wall 20.
[0078] In some embodiments, see Figure 1 and Figure 2 The second inner clamping needle 31 and the second outer winding needle 32 are both fixedly disposed on the winding needle seat 1, and the first inner clamping needle 21 and the first outer winding needle 22 are respectively slidably disposed on the winding needle seat 1 along the first direction.
[0079] By making the second inner clamping needle 31 and the second outer winding needle 32 both fixedly arranged on the winding needle seat 1, and the first inner clamping needle 21 and the first outer winding needle 22 respectively slidably arranged on the winding needle seat 1 along the first direction, while ensuring that the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31 can be brought close to or away from each other, and the first outer winding needle 22 and the second outer winding needle 32 can be brought close to or away from each other, the number of parts that need to be slidably arranged along the first direction is reduced as much as possible, thereby simplifying the structure of the winding needle 100 to a certain extent and reducing the cost of the winding needle 100.
[0080] Of course, in other embodiments, the first inner clamping needle 21 and the first outer winding needle 22 are respectively slidably disposed on the winding needle seat 1 along the first direction, and the second inner clamping needle 31 and the second outer winding needle 32 can also be respectively slidably disposed on the winding needle seat 1 along the first direction, and this embodiment is not limited to this.
[0081] In some embodiments, see Figure 1 , Figure 4 and Figure 5 , Figure 4 yes Figure 1 The structural diagram of the needle coiling seat 1 and the second half needle assembly 3 (some mechanisms are omitted), Figure 5 yes Figure 1 The structure diagram of the winding needle seat 1 and the first half needle assembly 2 (some mechanisms are omitted), a first elastic member 10 is arranged between the first inner clamping needle 21 and the winding needle seat 1, and the first elastic member 10 is used to provide the first inner clamping needle 21 with a first direction ( Figure 5 The elastic force of the second inner clamping needle 31 is away from the middle Z-axis direction.
[0082] By arranging the first elastic member 10 between the first inner clamping needle 21 and the winding needle seat 1, since the first elastic member 10 can provide the first inner clamping needle 21 with an elastic force away from the second inner clamping needle 31 along the first direction, therefore, in the initial state, the first inner clamping needle 21 and the second inner clamping needle 31 will be separated from each other under the elastic force of the first elastic member 10, so that the clamping surface 30 of the first inner clamping needle 21 and the clamping surface 30 of the second inner clamping needle 31 are in a state of being separated from each other, so that the gap 4 is in an open state, which is very convenient for the pushing member T to push the material strip into the gap 4.
[0083] In some embodiments, see Figure 1 , Figure 4 and Figure 5 A second elastic member (not shown in the figure) is provided between the first outer winding needle 22 and the winding needle seat 1, and the second elastic member is used to provide an elastic force to the first outer winding needle 22 to approach the second outer winding needle 32 along the first direction.
[0084] By arranging a second elastic member between the first outer winding needle 22 and the winding needle seat 1, since the second elastic member is used to provide an elastic force to the first outer winding needle 22 to approach the second outer winding needle 32 along the first direction, therefore, in the initial state, the first outer winding needle 22 and the second outer winding needle 32 will approach each other under the elastic force of the second elastic member, thereby reducing the diameter of the circumscribed circle of the winding peripheral wall 20, thereby facilitating the removal of the material tape wound on the winding peripheral wall 20 from the winding peripheral wall 20.
[0085] In some embodiments, see Figure 4 and Figure 5 The needle holder 1 comprises: a first half needle holder 11 and a second half needle holder 12, wherein the second half needle holder 12 is arranged opposite to the first half needle holder 11 along the first direction, the second inner clamping needle 31 and the second outer winding needle 32 are both fixedly arranged on the second half needle holder 12, the first half needle holder 11 and the second half needle holder 12 are enclosed to form a sliding cavity 110, the first inner clamping needle 21 is arranged on the first movable seat 211, the first outer winding needle 22 is arranged on the second movable seat 221, the first movable seat 211 and the second movable seat 221 are both slidably arranged in the sliding cavity 110 along the first direction, the first elastic member 10 is clamped between the second half needle holder 12 and the first movable seat 211 along the first direction, and the second elastic member is clamped between the first half needle holder 11 and the second movable seat 221 along the first direction.
[0086] Since the first half-rolled needle seat 11 and the second half-rolled needle seat 12 are enclosed to form the sliding cavity 110, the first movable seat 211 and the second movable seat 221 are both slidably arranged in the sliding cavity 110 along the first direction. Therefore, the first half-rolled needle seat 11 and the second half-rolled needle seat 12 can half-wrap the first movable seat 211 and the second movable seat 221, so that the environment in which the first movable seat 211 and the second movable seat 221 are located is relatively safe and free from external interference, thereby making the entire winding needle 100 more sturdy and durable.
[0087] The first elastic member 10 and the second elastic member may both be springs or other possible elastic members, which is not limited in this embodiment.
[0088] There are many ways to slidably arrange the first movable seat 211 and the second movable seat 221 in the sliding cavity 110 along the first direction. In one possible implementation, see Figure 5 A guide rod 5 may be provided in the sliding cavity 110, and the guide rod 5 is arranged along a first direction ( Figure 5 The first movable seat 211 and the second movable seat 221 are respectively slidably mounted on the guide rod 5 along the first direction.
[0089] Of course, the first movable seat 211 and the second movable seat 221 may also be slidably disposed in the sliding cavity 110 along the first direction in other ways, and this embodiment is not limited thereto.
[0090] The number of the guide rods 5 may be two or four, etc., which is not limited in this embodiment.
[0091] In some embodiments, see Figure 1 and Figure 5 A first protrusion 2111 is provided on the first movable seat 211, a first through hole 111 is provided on the first half-roll needle seat 11, and the first protrusion 2111 can slidably pass through the first through hole 111 along the first direction; a second protrusion 2211 is provided on the second movable seat 221, and a second through hole 121 is provided on the second half-roll needle seat 12, and the second protrusion 2211 can slidably pass through the second through hole 121 along the first direction.
[0092] Since the first protrusion 2111 can slide out of the first through hole 111 along the first direction, and the second protrusion 2211 can slide out of the second through hole 121 along the first direction, when the first protrusion 2111 and the second protrusion 2211 are clamped simultaneously along the first direction, the first inner clamping needle 21 will move along the first direction toward the second inner clamping needle 31, so that the gap 4 is closed to clamp the material strip, and the first outer winding needle 22 will move along the first direction toward the direction away from the second outer winding needle 32, so that the diameter of the circumscribed circle of the winding wall 20 becomes larger to facilitate the winding of the material strip on the winding wall 20.
[0093] In some embodiments, see Figure 1 and Figure 5 A cutter avoidance groove 310 is provided on one of the first outer winding needle 22 and the second outer winding needle 32 .
[0094] By setting the cutter avoidance groove 310, when the material strip is cut by the cutter, the cutter avoidance groove 310 can be located on the cutting path of the cutter, so that the cutter can be prevented from directly colliding with the first outer winding needle 22 or the second outer winding needle 32 and causing damage to the cutter.
[0095] In some embodiments, see Figure 2 The cross section of the winding peripheral wall 20 is roughly rhombus-shaped. By making the cross section of the winding peripheral wall 20 rhombus-shaped, the material strip wound thereon can form a rhombus-shaped structure. In this way, when the winding needle 100 is applied to the battery cell winding machine 200, a square battery cell can be manufactured.
[0096] Of course, the cross-section of the winding peripheral wall 20 may also be other possible shapes, for example, it may be roughly circular, etc., and this embodiment is not limited to this.
[0097] The present application also provides a battery cell winding machine 200, see Figure 6 , Figure 6 1 is a schematic structural diagram of a battery cell winding machine 200 provided in one embodiment of the present application. The battery cell winding machine 200 includes a winding needle 100 .
[0098] The structure of the winding needle 100 may be the same as the structure described in any one of the above embodiments, and may bring the same or similar beneficial effects. For details, please refer to the description in the above embodiments, and this embodiment will not be described in detail.
[0099] In this embodiment, since the winding needle 100 has a low cost and a low assembly difficulty, based on this, when the battery cell winding machine 200 includes the winding needle 100, the cost of the battery cell winding machine 200 can be reduced while reducing the assembly difficulty of the battery cell winding machine 200.
[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A winding needle (100), characterized in that: include: Needle coiling seat (1); A first half needle assembly (2), the first half needle assembly (2) being arranged on the needle winding seat (1), the first half needle assembly (2) comprising a first inner clamping needle (21) and a first outer winding needle (22); and, A second half needle assembly (3), the second half needle assembly (3) is arranged on the needle winding seat (1) and is opposite to the first half needle assembly (2) along a first direction, the second half needle assembly (3) comprises a second inner clamping needle (31) and a second outer winding needle (32), at least one of the first inner clamping needle (21) and the second inner clamping needle (31) can move in a direction away from or close to the other along the first direction, so that the clamping surface (30) of the first inner clamping needle (21) and the clamping surface (30) of the second inner clamping needle (31) are away from each other to form a gap (4) for the material tape to enter or close to each other to clamp the material tape, the first outer winding needle (22) and the second outer winding needle (32) jointly form a winding peripheral wall (20), and the winding peripheral wall (20) is used for the material tape to be wound thereon; Wherein, a groove (301) is provided on the clamping surface (30) of the first inner clamping needle (21) and / or the clamping surface (30) of the second inner clamping needle (31), and the groove (301) is used to accommodate a pushing member that pushes the material strip into the gap (4).
2. The winding needle (100) according to claim 1, characterized in that: There are a plurality of grooves (301), and the plurality of grooves (301) are arranged at intervals along the axial direction of the winding peripheral wall (20).
3. The winding needle (100) according to claim 1, characterized in that: The groove (301) provided on the clamping surface (30) of the first inner clamping needle (21) penetrates the first inner clamping needle (21) along a direction parallel to the clamping surface (30) and perpendicular to the axial direction of the winding peripheral wall (20), and / or the groove (301) provided on the clamping surface (30) of the second inner clamping needle (31) penetrates the second inner clamping needle (31) along a direction parallel to the clamping surface (30) and perpendicular to the axial direction of the winding peripheral wall (20).
4. The winding needle (100) according to claim 1, characterized in that: The groove (301) is provided on one of the clamping surface (30) of the first inner clamping needle (21) and the clamping surface (30) of the second inner clamping needle (31), and the other is a plane; or, The groove (301) is provided on the clamping surface (30) of the first inner clamping needle (21) and the clamping surface (30) of the second inner clamping needle (31), and the groove (301) provided on the clamping surface (30) of the first inner clamping needle (21) and the groove (301) provided on the clamping surface (30) of the second inner clamping needle (31) are opposite to each other along the first direction.
5. The winding needle (100) according to claim 1, characterized in that: The clamping surface (30) of the first inner clamping needle (21) is provided with a concavo-convex structure (302), and / or the clamping surface (30) of the second inner clamping needle (31) is provided with a concavo-convex structure (302).
6. The winding needle (100) according to claim 5, characterized in that: The concave-convex structure (302) is sawtooth-shaped and comprises a plurality of convex strips (3021), each of the convex strips (3021) extending along the axial direction of the winding peripheral wall (20), and the plurality of convex strips (3021) are arranged in sequence along a direction perpendicular to the axial direction of the winding peripheral wall (20).
7. The winding needle (100) according to any one of claims 1 to 6, characterized in that: At least one of the first outer winding needle (22) and the second outer winding needle (32) can move in the first direction away from or towards the other to adjust the diameter of the circumscribed circle of the winding peripheral wall (20).
8. The winding needle (100) according to claim 7, characterized in that: The second inner clamping needle (31) and the second outer winding needle (32) are both fixedly arranged on the winding needle seat (1), and the first inner clamping needle (21) and the first outer winding needle (22) are respectively slidably arranged on the winding needle seat (1) along the first direction.
9. The winding needle (100) according to claim 8, characterized in that: A first elastic member (10) is provided between the first inner clamping needle (21) and the needle winding seat (1), and the first elastic member (10) is used to provide an elastic force to the first inner clamping needle (21) to move away from the second inner clamping needle (31) along the first direction.
10. The winding needle (100) according to claim 9, characterized in that: A second elastic member is provided between the first outer rolling needle (22) and the rolling needle seat (1), and the second elastic member is used to provide an elastic force for the first outer rolling needle (22) to approach the second outer rolling needle (32) along the first direction.
11. The winding needle (100) according to claim 10, characterized in that: The needle winding seat (1) comprises: The first half of the needle holder (11); A second half-rolled needle seat (12), the second half-rolled needle seat (12) and the first half-rolled needle seat (11) are arranged opposite to each other along the first direction, the second inner clamping needle (31) and the second outer clamping needle (32) are both fixedly arranged on the second half-rolled needle seat (12), the first half-rolled needle seat (11) and the second half-rolled needle seat (12) are enclosed to form a sliding cavity (110), the first inner clamping needle (21) is arranged on the first movable seat (211), the first outer clamping needle (22) is arranged on the second movable seat (221), the first movable seat (211) and the second movable seat (221) are both slidably arranged in the sliding cavity (110) along the first direction, the first elastic member (10) is clamped between the second half-rolled needle seat (12) and the first movable seat (211) along the first direction, and the second elastic member is clamped between the first half-rolled needle seat (11) and the second movable seat (221) along the first direction.
12. The winding needle (100) according to claim 11, characterized in that: The first movable seat (211) is provided with a first protrusion (2111), the first half-rolled needle seat (11) is provided with a first through hole (111), and the first protrusion (2111) can slidably pass through the first through hole (111) along the first direction; the second movable seat (221) is provided with a second protrusion (2211), and the second half-rolled needle seat (12) is provided with a second through hole (121), and the second protrusion (2211) can slidably pass through the second through hole (121) along the first direction.
13. The winding needle (100) according to any one of claims 1-6 or 8-12, characterized in that: A cutter avoidance groove (310) is provided on one of the first outer curling needle (22) and the second outer curling needle (32).
14. The winding needle (100) according to any one of claims 1-6 or 8-12, characterized in that: The cross section of the winding peripheral wall (20) is rhombus-shaped.
15. A battery cell winding machine (200), characterized in that: The invention comprises the winding needle (100) according to any one of claims 1 to 14.