Winding device with winding needle stabilizing structure

Abstract

The utility model relates to the technical field of winding devices, in particular to a winding device with a winding needle stabilizing structure, and solves the problem that in the prior art, a bare battery cell still has the risk of slipping when a diaphragm and a pole piece are subjected to core pulling due to the fact that no tightening structure is arranged between a first clamping plate and a second clamping plate. A winding device with a winding needle stabilizing structure comprises a winding needle and a mounting rod. Two connecting grooves are formed in each of the top and the bottom of one end of the winding needle; two fixing seats are connected to one side of the mounting rod, a first clamping plate and a second clamping plate are arranged on one side of each fixing seat, the first clamping plates and the second clamping plates are matched with the connecting grooves, one ends of the first clamping plates and the second clamping plates are connected with the side walls of the fixing seats, and the first clamping plates and the second clamping plates are connected through elastic structures. According to the winding device, tightening force is generated between the first clamping plate and the second clamping plate through the elastic structure, so that the bare battery cell is effectively prevented from slipping in the core pulling process, and the stability and the reliability of the winding device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to winding device technical field especially relates to a winding device with winding needle stable structure. BACKGROUND

[0002] Winding devices play an important role in the battery manufacturing industry. As a key link in the production process of lithium batteries, the winding effect and stability of the winding device have a decisive influence on the overall performance and safety of the battery. The winding needle, as the core component of the winding device, is responsible for tightly winding the bare battery core, separator and pole piece and other materials together to form the core structure of the battery. In particular, in the core process of winding and pulling off the bare battery core, the existing winding needle device gradually exposes obvious limitations when handling different specifications and materials of the bare battery core.

[0003] Utility model patent CN214706020U discloses a winding needle device and a winding needle equipment. The device includes a winding needle body and a clamping structure. A matching part is formed on the outer wall of the winding needle body, and the clamping structure is inserted into the matching part to clamp the bare battery core, thereby pulling it off the winding needle body. This design improves the situation of pulling off the separator and the pole piece to some extent. However, the device still has deficiencies in actual application.

[0004] Specifically, the existing winding needle device faces the prominent problems of inconvenient operation, unstable clamping and quality risk during the process of pulling off the bare battery core. There is no tightening structure between the first clamping plate and the second clamping plate, which causes the risk of the bare battery core slipping off when pulling off the separator and the pole piece. This problem not only reduces the working efficiency of the winding device and increases the operation complexity, but also makes it difficult to meet the needs of high-precision and large-batch battery production. More seriously, the slipping off of the bare battery core may cause damage to the internal structure of the battery, thereby bringing potential risks to the overall quality and safety of the battery, significantly increasing the production cost and quality risk.

[0005] Therefore, in view of the many deficiencies in the prior art, we urgently need a winding device with a winding needle stable structure to solve this problem. Such a winding device should significantly improve the stability and efficiency of the winding and pulling off of the bare battery core, and better meet the needs of modern battery production, providing strong support for the sustainable development of the battery manufacturing industry. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a winding device with a winding needle stable structure, which solves the problem that there is no tightening structure between the first clamping plate and the second clamping plate in the prior art, causing the risk of the bare battery core slipping off when pulling off the separator and the pole piece.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0008] A winding device with a winding needle stabilizing structure comprises a winding needle and a mounting rod;

[0009] Two connecting grooves are formed in the top and bottom of one end of the winding needle;

[0010] Two fixed seats are connected to one side of the mounting rod, and a clamping plate one and a clamping plate two are arranged on one side of the fixed seat, the clamping plate one and the clamping plate two are matched with the connecting grooves and connected to the side wall of the fixed seat at one end, and the clamping plate one and the clamping plate two are connected by an elastic structure.

[0011] Preferably, the clamping plate one and the clamping plate two have the same length, and the length of the connecting groove is greater than the length of the clamping plate one.

[0012] Preferably, the elastic structure comprises an elastic sheet in the shape of V, and the two ends of the elastic sheet are connected to the side wall of the clamping plate one and the clamping plate two, respectively.

[0013] Preferably, four gradually expanding grooves corresponding to the four connecting grooves are formed in one end of the winding needle, and the size of the gradually expanding groove near the connecting groove side is smaller than the size of the other side.

[0014] Preferably, the fixed seat is bolted and fixedly connected to one side of the mounting rod, and the clamping plate one and the clamping plate two are fixedly connected to one side of the fixed seat.

[0015] Preferably, a return spring is arranged on one side of the elastic sheet, one side of the return spring is connected to the elastic sheet, and the other end is connected to the side wall of the fixed seat.

[0016] The utility model at least has the following beneficial effects:

[0017] The winding device with the winding needle stabilizing structure solves the technical problem of unstable extraction of the bare battery cell after the traditional winding device is completed by the cooperation of the winding needle and the clamping plate. Firstly, the close cooperation of the connecting groove on the winding needle and the clamping plate one and the clamping plate two ensures the stable clamping of the bare battery cell during the winding process, avoiding the decline of the winding quality caused by unstable clamping. Secondly, the stable connection of the mounting rod and the fixed seat and the elastic structure design between the clamping plates can maintain stable clamping force when the bare battery cell is extracted, ensuring the smooth and accurate extraction of the bare battery cell and improving the working reliability and efficiency of the winding device. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0019] Figure 1 It is the structure schematic drawing of the utility model;

[0020] Figure 2 It is the structure schematic drawing of the utility model needle and installation pole structure;

[0021] Figure 3 It is the structure schematic drawing of the utility model clamping plate one and clamping plate two structure;

[0022] Figure 4 It is the structure schematic drawing of the utility model connecting groove and gradually expanding groove structure;

[0023] Figure 5 It is the structure schematic drawing of the utility model elastic sheet and reset spring structure.

[0024] In the drawing: 1, needle; 2, installation pole; 3, clamping plate one; 4, clamping plate two; 5, fixed seat; 6, elastic sheet; 7, connecting groove; 8, gradually expanding groove; 9, reset spring. DETAILED DESCRIPTION

[0025] In order to make the utility model's purpose, technical scheme and advantage more clearly, the following is combined with the embodiment, and the utility model is further detailed.The specific embodiments described herein are merely intended to illustrate the utility model and not to limit the utility model. EMBODIMENT

[0026] Please refer to Figures 1-5 The embodiment of the utility model has a needle stable structure's winding device, including needle 1 and installation pole 2;

[0027] Needle 1: needle 1 is the core component of winding device, is used for tightly winding bare cell, diaphragm and pole piece and other materials on its outer surface.Needle 1's one end top and one end bottom are provided with two connecting grooves 7, these connecting grooves are matched with clamping plate one 3 and clamping plate two 4 on installation pole 2, realize the stable extraction of bare cell after winding is completed.

[0028] Connecting groove 7: connecting groove 7 is set in the one end top and one end bottom of needle 1, is used for with clamping plate one 3 and clamping plate two 4 is adapted.In the winding is completed, clamping plate two 4 is accurately inserted into connecting groove 7 under the guidance, clamping plate one 3 is together with the diaphragm and pole piece of bare cell, provides stable support for subsequent extraction action.

[0029] Installation pole 2: installation pole 2 is another important component of winding device, its one side is connected with two fixed seats 5.Installation pole 2 keeps stationary during winding, and when extracting bare cell, then is withdrawn along the direction opposite to the insertion direction, drives fixed seat 5 and clamping plate to move together, realizes the stable extraction of bare cell.

[0030] The fixed seat 5 is connected to one side of the mounting rod 2, used to fix the clamp plate one 3 and the clamp plate two 4. The fixed seat 5 is fixedly connected with the mounting rod 2 through bolts, ensuring the stability and firmness between the two. When the bare battery cell is pulled out, the fixed seat 5 moves with the mounting rod 2, driving the clamp plate to hold and pull out the bare battery cell.

[0031] The clamp plate one 3 and the clamp plate two 4 are both adapted to the connecting groove 7, and one end of each is connected with the side wall of the fixed seat 5. Between them, the elastic structure is connected, such as V-shaped elastic sheet 6, so that when the diaphragm and the pole piece of the bare battery cell are clamped, the inward elastic force can be generated, enhancing the clamping force. After winding is completed, the clamp plate two 4 is inserted into the connecting groove 7 under the guidance, clamping the diaphragm and the pole piece of the bare battery cell together with the clamp plate one 3, providing stable support for the subsequent pulling-out action.

[0032] The one end top and the one end bottom of the winding needle 1 are both provided with two connecting grooves 7;

[0033] One side of the mounting rod 2 is connected with two fixed seats 5, one side of the fixed seat 5 is provided with the clamp plate one 3 and the clamp plate two 4, the clamp plate one 3 and the clamp plate two 4 are both adapted to the connecting groove 7 and one end of each is connected with the side wall of the fixed seat 5, and the clamp plate one 3 and the clamp plate two 4 are connected through the elastic structure. Embodiment

[0034] Please refer to Figures 1-5 The length of the clamp plate one 3 and the clamp plate two 4 is the same, the length of the connecting groove 7 is greater than the length of the clamp plate one 3, specifically, when the clamp plate one 3 and the clamp plate two 4 are opened and inserted into the connecting groove 7 of the winding needle 1, because the length of the connecting groove 7 is greater than the length of the clamp plate one 3, this ensures that the clamp plate one 3 and the clamp plate two 4 can be completely and stably inserted into the connecting groove 7, and it will not cause unstable clamping or unable to insert due to insufficient length. When clamping the diaphragm and the pole piece of the bare battery cell, this design provides enough clamping space and stability. The effect of enhancing clamping stability is achieved, ensuring that the bare battery cell can be stably pulled out during the retraction of the winding needle 1 and the retreat of the mounting rod 2, avoiding slipping or deformation due to unstable clamping.

[0035] The end of the winding needle 1 is provided with four gradually expanding grooves 8 corresponding to the four connecting grooves 7, the size of the gradually expanding groove 8 near the connecting groove 7 is smaller than the size of the other side, specifically, when the clamping plate two 4 is inserted into the connecting groove 7, the gradually expanding groove 8 plays a guiding role. Because the size of the gradually expanding groove 8 near the connecting groove 7 is smaller, it makes the clamping plate two 4 more easily and accurately inserted into the connecting groove 7. At the same time, the gradually expanding design of the gradually expanding groove 8 also provides a certain fault tolerance, even if the insertion position of the clamping plate two 4 is slightly deviated, it can also be smoothly inserted through the guidance of the gradually expanding groove 8. The effect of improving the insertion accuracy and fault tolerance is achieved, which ensures that the clamping plate two 4 can be accurately and smoothly inserted into the connecting groove 7, providing reliable guarantee for the subsequent clamping and pulling off action. Embodiment

[0036] Please refer to Figures 1-5 The elastic structure includes an elastic sheet 6 shaped like a V, the two ends of the elastic sheet 6 are connected to the side walls of the clamping plate one 3 and the clamping plate two 4, specifically, when the clamping plate one 3 and the clamping plate two 4 clamp the diaphragm and the pole piece of the bare battery cell, the V-shaped elastic sheet 6 begins to play a role. Due to its shape characteristics, the elastic sheet 6 will deform when subjected to external force, generating an inward elastic force, which makes the clamping plate one 3 and the clamping plate two 4 clamp the diaphragm and the pole piece more tightly. The effect of enhancing the clamping force is achieved, which ensures that the diaphragm and the pole piece will not slip off due to external force during the pulling off process of the bare battery cell, improving the reliability and stability of the winding device.

[0037] The fixed seat 5 is bolted and fixedly connected to one side of the mounting rod 2, the clamping plate one 3 and the clamping plate two 4 are fixedly connected to one side of the fixed seat 5, specifically, the bolted and fixed connection between the fixed seat 5 and the mounting rod 2 ensures the stability and firmness between them. At the same time, the fixed connection of the clamping plate one 3 and the clamping plate two 4 with the fixed seat 5 also ensures their stability and reliability during the working process. This design makes the whole winding device maintain the stability of the overall structure when subjected to external force, and will not cause failure due to loosening or falling off between components. The effect of enhancing the structural stability is achieved, which ensures the reliability and durability of the winding device during the working process, improves the production efficiency and product quality.

[0038] One side of the elastic sheet 6 is provided with a reset spring 9, one side of the reset spring 9 is connected with the elastic sheet 6, the other end is connected with the side wall of the fixed seat 5, specifically, when the clamping plate one 3 and the clamping plate two 4 clamp the diaphragm and the pole piece of the bare battery core, the reset spring 9 starts to play a role. Additional elastic support is provided, so that the elastic sheet 6 can quickly recover after being deformed by external force, thereby ensuring that the clamping plate one 3 and the clamping plate two 4 continuously and stably clamp the diaphragm and the pole piece. The effect of enhancing the clamping recovery force and durability is achieved, which ensures that the winding device can still maintain stable clamping performance after long time or multiple use, improves the reliability and service life of the equipment.

[0039] The scheme has the following working process:

[0040] The winding device comprises a winding needle 1 and a mounting rod 2. Two connecting grooves 7 are formed in the top and bottom of one end of the winding needle 1, which are used to cooperate with the components on the mounting rod 2. Two fixed seats 5 are connected to one side of the mounting rod 2, and the fixed seats 5 are provided with a clamping plate one 3 and a clamping plate two 4, which are matched with the connecting grooves 7 and are fixedly connected with the side wall of the fixed seat 5 at one end. The clamping plate one 3 and the clamping plate two 4 are connected through an elastic structure, which comprises an elastic sheet 6 shaped like a V, the two ends of which are connected with the side walls of the clamping plate one 3 and the clamping plate two 4 respectively. In addition, one side of the elastic sheet 6 is also provided with a reset spring 9, one side of the reset spring 9 is connected with the elastic sheet 6, and the other end is connected with the side wall of the fixed seat 5. Four gradually expanding grooves 8 corresponding to the four connecting grooves 7 are formed in one end of the winding needle 1, the size of the gradually expanding groove 8 near one side of the connecting groove 7 is smaller than that of the other side, which is used to guide the clamping plate two 4 to be accurately inserted into the connecting groove 7.

[0041] Working process:

[0042] Firstly, the winding needle 1 starts to perform the winding step, and tightly winds the bare battery core, diaphragm and pole piece and other materials on the outer surface of the winding needle 1. After winding, the inner circle isolation film of the bare battery core is in close contact with the outer surface of the winding needle 1, and due to the action of the pole piece and diaphragm tension in the winding process, there is a certain friction force between them.

[0043] At this time, in order to avoid the core extraction phenomenon caused by directly pushing out the bare battery core, the winding device adopts an innovative extraction method. After the winding needle 1 completes the winding, it performs the retraction action, at the same time, the two fixed seats 5 on one side of the mounting rod 2 start to work, and the clamping plate one 3 and the clamping plate two 4 on them are opened. Under the guidance of the gradually expanding groove 8, the clamping plate two 4 is accurately inserted into the connecting groove 7 at the top or bottom of one end of the winding needle 1. At this time, the clamping plate one 3 and the clamping plate two 4 just clamp the diaphragm and the pole piece of the bare battery core.

[0044] Next, by means of the V-shaped elastic sheet 6 between the first clamp 3 and the second clamp 4, the two begin to tighten each other, forming a stable clamping state for the diaphragm and the pole piece of the bare battery cell. This clamping not only ensures that the diaphragm and the pole piece will not slip due to external force, but also provides reliable support for the subsequent extraction action. At the same time, the reset spring 9 provides additional elastic support to ensure that the elastic sheet 6 can quickly recover to its original state after being deformed by external force, maintaining the continuous and stable clamping of the clamp.

[0045] After the clamping is stable, the mounting rod 2 begins to retreat in the direction opposite to the insertion direction. Since the mounting rod 2 moves synchronously with the fixed seat 5, the fixed seat 5 also moves. Under the drive of the fixed seat 5, the bare battery cell is gradually extracted from the needle 1. During the whole process, the cooperative work of the two fixed seats 5 ensures that the bare battery cell is evenly stressed, avoiding deformation or damage caused by uneven stress.

[0046] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A winding device with a needle stabilizing structure, characterized in that, Include: The reel needle (1) and the installation rod (2); The reel needle (1) is provided with two connecting grooves (7) on the top and bottom of one end; The installation rod (2) is connected with two fixed bases (5) on one side, the fixed base (5) is provided with a clamping plate (3) and a clamping plate (4) on one side, the clamping plate (3) and the clamping plate (4) are matched with the connecting groove (7) and connected with the side wall of the fixed base (5) on one end, and the clamping plate (3) and the clamping plate (4) are connected through the elastic structure.

2. The winding device having a stylus stabilizing structure according to claim 1, wherein The length of the clamping plate (3) and the clamping plate (4) is the same, and the length of the connecting groove (7) is greater than the length of the clamping plate (3).

3. The winding device having a stylus stabilizing structure according to claim 1, wherein The elastic structure contains a V-shaped elastic sheet (6), and the two ends of the elastic sheet (6) are connected with the side wall of the clamping plate (3) and the clamping plate (4) respectively.

4. The winding device having a stylus stabilizing structure according to claim 2, wherein The reel needle (1) is provided with four gradually expanding grooves (8) corresponding to four connecting grooves (7) on one end, and the size of the gradually expanding groove (8) near the connecting groove (7) is smaller than that of the other side.

5. The winding device having a stylus stabilizing structure according to claim 3, wherein The fixed base (5) is bolted and connected with one side of the installation rod (2), and the clamping plate (3) and the clamping plate (4) are fixedly connected with one side of the fixed base (5).

6. The winding device having a stylus stabilizing structure according to claim 5, wherein One side of the elastic sheet (6) is provided with a reset spring (9), one side of the reset spring (9) is connected with the elastic sheet (6), and the other end is connected with the side wall of the fixed base (5).

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