A take-up pin mechanism, a take-up device, and a take-up method

Abstract

The application discloses a winding needle mechanism, a winding device and a winding method, relates to the technical field of winding, and the winding needle mechanism comprises a winding needle module, a rotary driving module and a clamping driving module which is modularly arranged with the rotary driving module. The rotary driving module is connected with the winding needle module and is used for driving the overall rotary movement of the winding needle module. The clamping driving module is connected with the winding needle module and is used for driving the winding needle module to switch between the clamping state and the open state. The application modularly arranges the rotary driving module and the clamping driving module, further improves the integration of the overall structure, facilitates assembly and replacement, saves the arrangement of the spline shaft, optimizes the overall structure, makes the overall structure more simple and compact, and reduces the equipment cost.

Description

Technical Field

[0001] This application relates to the field of winding technology, and in particular to a winding needle mechanism, winding device and winding method. Background Technology

[0002] With the vigorous development of new energy technologies, new energy vehicles are becoming increasingly mature and their sales are growing rapidly. As a result, the demand for lithium batteries, the power source for automobiles, is also increasing, and many manufacturers are beginning to further deepen their research on lithium battery production and manufacturing.

[0003] Winded cells are widely used in lithium batteries, and their production requires corresponding cell winding equipment. However, current cell winding equipment still has some shortcomings. Chinese patent CN201820903902.X discloses a cell winding device, whose disclosed needle rotation mechanism includes a spline shaft and a rotation drive component. This automatic drive component drives the needle rotation via the spline shaft and is located at the end furthest from the needle. This structural design results in low overall integration and a large device size. Moreover, the installation of the spline shaft requires a corresponding positioning mechanism, making assembly and replacement difficult and leading to high equipment costs. Summary of the Invention

[0004] In view of this, the primary objective of this application is to provide a needle winding mechanism to solve the technical problems existing in the prior art.

[0005] The second objective of this application is to provide a winding device.

[0006] A third objective of this application is to provide a winding method applicable to the aforementioned winding apparatus.

[0007] To achieve the above technical objectives, this application provides a needle winding mechanism, including a needle winding module, a rotation drive module, and a clamping drive module;

[0008] The rotation drive module is connected to the needle winding module and is used to drive the overall rotation of the needle winding module;

[0009] The clamping drive module is connected to the needle winding module and is used to drive the needle winding module to switch between a clamping state and an opening state.

[0010] The rotation drive module and the clamping drive module are modularly configured.

[0011] Furthermore, the rotary drive module has a rotary connector that is connected to the needle winding module and drives the entire needle winding module to rotate.

[0012] The clamping drive module has a telescopic connector that moves through the rotary connector;

[0013] The telescopic connector can drive the needle winding module to switch between a clamping state and an open state through telescopic movement.

[0014] Furthermore, the needle winding module includes a first module body, a first inward winding needle, and a second inward winding needle;

[0015] The first inward-curling needle and / or the second inward-curling needle are adjustablely positioned on the first module body;

[0016] The clamping drive module is used to drive the coiling needle module to switch between a clamping state and an opening state by moving the first inward coiling needle and / or the second inward coiling needle.

[0017] Furthermore, the main body of the first module has a first through cavity;

[0018] One end of the first inward-curling needle and one end of the second inward-curling needle extend into the first central cavity;

[0019] The first inward-curling needle and the second inward-curling needle are fixedly connected to the body of the first module along their own length direction;

[0020] The first inward-curling needle is movably connected to the first module body along a direction close to or away from the second inward-curling needle, and / or the second inward-curling needle is connected to the first module body along a direction close to or away from the second inward-curling needle.

[0021] Furthermore, the rotary drive module includes a second module body, a first rotary driver, a transmission assembly, and a rotary drive rod;

[0022] The rotating drive rod forms the rotating connector, one end of the rotating drive rod is connected to the first module body, and has a second through cavity communicating with the first through cavity;

[0023] The first rotary driver is mounted on the second module body and connected to the other end of the rotary drive rod via the transmission assembly, for driving the first module body to rotate by rotating the rotary drive rod.

[0024] Furthermore, the transmission assembly includes a driving pulley, a driven pulley, and a timing belt;

[0025] The drive wheel is mounted on the output shaft of the first rotary driver;

[0026] The driven wheel is connected to the other end of the rotary drive rod and engages with the driving wheel via the synchronous belt;

[0027] The driven wheel and / or the rotary drive rod are rotatably mounted on the second module body.

[0028] Furthermore, the clamping drive module includes a third module body, a telescopic driver, and a clamping drive rod;

[0029] The third module body is installed on the second module body;

[0030] The clamping drive rod forms the telescopic connector and is movably inserted into the rotating drive rod;

[0031] The telescopic driver is mounted on the main body of the third module, and its telescopic end is connected to the clamping drive rod to drive the clamping drive rod to telescopically move.

[0032] Furthermore, the rod segment extending into the second through cavity on the clamping drive rod has a trigger portion with varying width;

[0033] The first inward-curling needle and / or the second inward-curling needle, whose positions are adjustable, are also connected to the first module body through an elastic element, so that the initial state between the first inward-curling needle and the second inward-curling needle is the clamping state.

[0034] The first inward-curling needle and / or the second inward-curling needle, which are adjustable in position, are also provided with a movable wheel that can contact the trigger part on the needle segment that extends into the first type of through cavity;

[0035] When in the clamping state, there is a gap between the trigger part and the movable wheel;

[0036] When in the open state, the trigger part contacts and abuts against the movable wheel.

[0037] Furthermore, the triggering part is a frustum structure with a gradually changing width.

[0038] Furthermore, the third module body is connected to the second module body via at least two connecting rods;

[0039] At least two connecting rods are parallel and spaced apart, and a connecting block is slidably installed thereon;

[0040] The telescopic end of the telescopic actuator is connected to the clamping drive rod via the connecting block.

[0041] This application also discloses a winding device, including a device body, a body rotation mechanism, and the aforementioned winding needle mechanism;

[0042] The needle winding mechanism is mounted on the main body of the device;

[0043] The main rotating mechanism is connected to the main body of the device and is used to drive the main body of the device to rotate, thereby driving the needle winding mechanism to switch between preset workstations.

[0044] Furthermore, it also includes a pin insertion / removal mechanism;

[0045] The needle insertion / removal mechanism is mounted on the main body of the device and connected to the needle winding mechanism, and is used to drive the needle winding mechanism to perform insertion / removal movements.

[0046] Furthermore, the main body of the device includes two fixing plates and a connecting frame;

[0047] The connecting frame is connected between the two fixed plates;

[0048] Each of the aforementioned fixed plates is rotatably equipped with a fixed frame;

[0049] One of the mounting plates is also equipped with a toothed ring;

[0050] The main rotating mechanism is connected to the gear ring and is used to drive the gear ring to rotate.

[0051] Furthermore, a slide rail is also provided between the two fixed plates;

[0052] The needle winding mechanism is slidably mounted on the slide rail, and the needle winding module extends out of the fixed plate that does not have the toothed ring.

[0053] Furthermore, the insertion / removal pin mechanism includes a second rotary driver, a lead screw, and a nut;

[0054] The lead screw is rotatably mounted on the main body of the device;

[0055] The nut is mounted on the needle winding mechanism and passes through the lead screw, engaging with the lead screw thread.

[0056] The second rotary driver is connected to the lead screw.

[0057] Furthermore, the second rotary driver is mounted on the fixed plate on which the gear ring is provided;

[0058] The lead screw is rotatably mounted between the two fixed plates;

[0059] The needle winding mechanism is provided with a lead screw through hole for the nut to be engaged;

[0060] The nut is installed on the lead screw through hole.

[0061] This application also discloses a winding method applied to the above-mentioned needle winding device, comprising the following steps:

[0062] S1, before the material to be wound is moved to the needle threading station, the clamping drive module in the needle winding mechanism is activated to drive the first inner winding needle and / or the second inner winding needle of the needle winding module to move until the first inner winding needle and the second inner winding needle are in an open state.

[0063] S2, when the material to be wound moves to the point where one end of itself passes between the first inward-curling needle and the second inward-curling needle, the clamping drive module is activated to drive the first inward-curling needle and / or the second inward-curling needle to move until the first inward-curling needle and the second inward-curling needle are in a clamped state.

[0064] S3, after the diaphragm material in the material to be wound is cut, the rotary drive module in the winding needle mechanism is activated to drive the winding needle module to rotate in order to wind the material to be wound.

[0065] S4. When the winding of the material to be wound is completed, the main body rotation mechanism is started, which drives the winding needle mechanism to switch positions.

[0066] Furthermore, the specific steps include:

[0067] S31, based on the first preset winding length, pre-wind the material to be wound;

[0068] S32, based on the second preset winding length, the material to be wound is wound at an accelerated speed;

[0069] S33, based on the third preset winding length, the material to be wound is wound at a constant speed;

[0070] S34, based on the fourth preset winding length, the material to be wound is wound at a reduced speed;

[0071] S35, after the electrode material in the material to be wound is cut, the material to be wound is wound to finish based on the fifth preset winding length.

[0072] As can be seen from the above technical solutions, the needle winding mechanism designed in this application includes a needle winding module, a rotary drive module, and a clamping drive module modularly configured with the rotary drive module. The rotary drive module is connected to the needle winding module and is used to drive the overall rotational movement of the needle winding module; while the clamping drive module is connected to the needle winding module and is used to drive the needle winding module to switch between a clamping state and an open state. By modularizing the rotary drive module and the clamping drive module, this application further improves the integration of the overall structure, facilitates assembly and replacement, saves on the need for a spline shaft, optimizes the overall structure, makes the overall structure simpler and more compact, and reduces equipment costs. Attached Figure Description

[0073] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0074] Figure 1 A perspective view of a needle winding mechanism provided in this application;

[0075] Figure 2 This is a partial three-dimensional view of a needle winding mechanism provided in this application;

[0076] Figure 3 This is a top view of a needle winding mechanism provided in this application;

[0077] Figure 4 This is a front view of a needle winding mechanism provided in this application;

[0078] Figure 5 This is a first partial sectional view of a needle winding mechanism provided in this application;

[0079] Figure 6 This is a second partial sectional view of a needle winding mechanism provided in this application;

[0080] Figure 7 This is a first perspective view of a winding device provided in this application;

[0081] Figure 8 This is a second perspective view of a winding device provided in this application;

[0082] Figure 9 This is a partial front view of a needle winding device provided in this application;

[0083] Figure 10 This is an overall flowchart of a winding method provided in this application;

[0084] Figure 11 A flowchart illustrating the specific winding process of the winding method provided in this application for the material to be wound.

[0085] In the diagram: 10. Needle winding module; 20. Rotary drive module; 30. Clamping drive module; 11. First inner winding needle; 12. Second inner winding needle; 13. First module body; 14. Elastic element; 15. Guide limit element; 16. Movable wheel; 21. Second module body; 211. Lead screw through hole; 22. First rotary driver; 23. Rotary drive rod; 241. Driving wheel; 242. Synchronous belt; 243. Driven wheel; 25. Fixed cylinder; 31. Third module body; 32. Telescopic driver; 33. Clamping drive rod; 331. Trigger part; 34. Connecting block; 35. Connecting rod; 100. Needle winding mechanism; 200. Device body; 300. Needle insertion and extraction mechanism; 400. Body rotation mechanism; 41. Fixed plate; 42. Fixed frame; 43. Gear ring; 44. Slide rail; 45. Connecting frame; 51. Second rotary driver; 52. Lead screw; 53. Nut. Detailed Implementation

[0086] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0087] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0088] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0089] This application discloses a needle winding mechanism, a winding device, and a winding method.

[0090] Please see Figure 1An embodiment of the needle winding mechanism, winding device, and winding method provided in this application includes:

[0091] The coiling module 10, the rotation drive module 20, and the clamping drive module 30 are included.

[0092] The rotary drive module 20 is connected to the needle winding module 10 and is used to drive the overall rotation of the needle winding module 10 to achieve winding.

[0093] The clamping drive module 30 is connected to the needle winding module 10 and is used to drive the needle winding module 10 to switch between a clamping state and an open state. The needle winding module 10 has a clamping state for clamping the material to be wound, or an open state for releasing the clamp on the material to be wound and allowing the material to be wound to pass through.

[0094] The rotary drive module 20 and the clamping drive module 30 are modularly configured, that is, the rotary drive module 20 and the clamping drive module 30 are integrated. For example, the rotary drive module 20 is installed on the clamping drive module 30, or the clamping drive module 30 is installed on the rotary drive module 20, or the clamping drive module 20 and the rotary drive module 30 are installed together on a mounting platform to achieve integrated configuration.

[0095] This application improves the integration of the overall structure by modularizing the rotary drive module 20 and the clamping drive module 30, making assembly and replacement easier. It also saves the need for a spline shaft, optimizes the overall structure, and makes the overall structure simpler and more compact, thus reducing equipment costs.

[0096] The above is Embodiment 1 of a needle winding mechanism, winding device, and winding method provided in this application. The following is Embodiment 2 of a needle winding mechanism, winding device, and winding method provided in this application. Please refer to the following for details. Figures 1 to 6 .

[0097] Based on the solution of Embodiment 1 above:

[0098] Furthermore, the specific cooperation between the rotation drive module 20 and the clamping drive module 30 can be as follows:

[0099] The rotary drive module 20 has a rotary connector that is connected to the needle winding module 10 and drives the needle winding module 10 to move as a whole. The clamping drive module 30 has a telescopic connector that moves through the rotary connector, and the telescopic connector can drive the needle winding module 10 to switch between a clamping state and an open state through telescopic movement.

[0100] The clamping drive module 30 is designed to drive the needle winding module 10 to switch between clamping and unclamping states via the telescopic movement of the telescopic connector. This facilitates coaxial nesting between the telescopic connector and the rotary connector. It also makes the fit between the rotary drive module 20 and the clamping drive module 30 more compact, enabling better integrated setup, further optimizing the overall size, saving installation space, and reducing equipment installation costs.

[0101] Taking the cooperation between the rotary drive module 20 and the clamping drive module 30 as an example:

[0102] Furthermore, the needle winding module 10 is designed to include a first module body 13, a first inward winding needle 11, and a second inward winding needle 12.

[0103] The first inward-curling needle 11 and / or the second inward-curling needle 12 are adjustablely positioned on the first module body 13. That is, one of the first inward-curling needles 11 and the second inward-curling needle 12 can be a fixed-curling needle design while the other is a movable-curling needle design, or both can be movable-curling needle designs. The clamping drive module 30 is specifically used to drive the needle winding module 10 to switch between a clamping state and an open state by moving the first inward-curling needle 11 and / or the second inward-curling needle 12. In other words, the first inward-curling needle 11 and the second inward-curling needle 12 can be in a clamping state to clamp the material to be wound, or in an open state to release the clamp and allow the material to pass through.

[0104] Furthermore, the first module body 13 has a through-cavity to facilitate the insertion of the telescopic connector and provide space for the installation and fixing of the first inward-curling needle 11 and the second inward-curling needle 12. The structural design of this first module body 13 can be as follows: Figure 2 As shown, it is a cylindrical structure, but there are no specific limitations.

[0105] One end of the first inward-curling needle 11 and the second inward-curling needle 12 extends into the first central cavity.

[0106] The first inward-curling needle 11 and the second inward-curling needle 12 are fixedly connected to the first module body 13 along their own length direction, which means that the first inward-curling needle 11 and the second inward-curling needle 12 are axially fixedly connected to prevent the first inward-curling needle 11 and the second inward-curling needle 12 from coming out of the first module body 13.

[0107] Simultaneously, the first inward-curling needle 11 is movably connected to the first module body 13 along the direction approaching or away from the second inward-curling needle 12, and / or the second inward-curling needle 12 is connected to the first module body 13 along the direction approaching or away from the second inward-curling needle 12, so as to achieve adjustable position settings for the first inward-curling needle 11 and / or the second inward-curling needle 12. Taking the adjustable position settings of both the first inward-curling needle 11 and the second inward-curling needle 12 as an example, multiple guide holes spaced apart along their own length can be provided on the needle segments of the first inward-curling needle 11 and the second inward-curling needle 12 that extend into the first through cavity. Then, fixing bolts and other guide limiting members 15 are inserted from the side of the first module body 13, passing through the guide holes on the first inward-curling needle 11 and the second inward-curling needle 12 respectively, so that the first inward-curling needle 11 and the second inward-curling needle 12 can slide on the shank of the fixing bolt, thereby achieving position adjustment. Of course, those skilled in the art can make appropriate design variations based on this, without limitation.

[0108] Furthermore, the rotary drive module 20 includes a second module body 21, a first rotary driver 22, a transmission assembly, and a rotary drive rod 23.

[0109] Regarding the structural design of the main body 21 of the second module, it can be as follows: Figure 2 As shown, this is a plate structure; no specific limitations are imposed.

[0110] The rotating drive rod 23 forms a rotating connector. One end of the rotating drive rod 23 is connected to the first module body 13, and it has a second through cavity that communicates with the first through cavity.

[0111] The first rotary driver 22 is mounted on the second module body 21 and connected to the other end of the rotary drive rod 23 via a transmission assembly. It is used to drive the rotary drive rod 23 to rotate, thereby driving the first module body 13 to rotate, and thus driving the entire needle winding module 10 to rotate. The first rotary driver 22 can be a conventional servo motor, pneumatic rotary motor, etc., and there is no specific limitation.

[0112] Furthermore, the transmission assembly design includes a drive pulley 241, a driven pulley 243, and a timing belt 242. The drive pulley 241 is mounted on the output shaft of the first rotary driver 22. The driven pulley 243 is connected to the other end of the rotary drive rod 23 and engages with the drive pulley 241 via the timing belt 242. The driven pulley 243 and / or the rotary drive rod 23 are rotatably mounted on the second module body 21. The first rotary driver 22 drives the drive pulley 241 to rotate, which in turn drives the driven pulley 243 to rotate synchronously via the timing belt 242, and then drives the rotary drive rod 23 to rotate. Besides the above-described transmission assembly design, it could also be a gear transmission assembly, a sprocket transmission assembly, etc., without specific limitations.

[0113] Furthermore, taking the rotational drive rod 23 rotatably mounted on the second module body 21 as an example, in order to further improve the stability of the rotational mounting of the rotational drive rod 23, it can be done as follows: Figures 3 to 6 As shown, a fixed cylinder 25 is added and installed on the second module body 21. This fixed cylinder 25 is hollow, and the rotary drive rod 23 can be rotatably mounted inside the fixed cylinder 25 via bearings. Simultaneously, it is axially fixed to the fixed cylinder 25 via end caps or other limiting structures to prevent it from detaching from the fixed cylinder 25. One end of the rotary drive rod 23 extends out of the fixed cylinder 25 and connects to the driven wheel 243, while the other end extends out of the fixed cylinder 25 and connects to the first module body 13. Those skilled in the art can make appropriate design variations based on this, without limitation.

[0114] Furthermore, the clamping drive module 30 includes a third module body 31, a telescopic driver 32, and a clamping drive rod 33.

[0115] The third module body 31 is mounted on the second module body 21. The main function of the third module body 31 is to mount and fix the telescopic actuator 32. Therefore, its specific structure can be determined according to the actual installation needs of the telescopic actuator 32 and is not limited.

[0116] The clamping drive rod 33 forms a telescopic connector, which passes through the hole in the middle of the driven wheel 243 and is movably inserted into the rotary drive rod 23; the telescopic driver 32 is mounted on the third module body 31, and its telescopic end is connected to the clamping drive rod 33 to drive the clamping drive rod 33 to telescopically move.

[0117] To ensure smoother telescopic movement of the clamping drive rod 33, the third module body 31 is connected to the second module body 21 via at least two connecting rods 35. A connecting block 34 is slidably mounted on each of the connecting rods 35. The telescopic end of the telescopic actuator 32 is connected to the clamping drive rod 33 via the connecting block 34. This smoother telescopic movement of the clamping drive rod 33 is achieved through the guiding action of the connecting rods 35. The connecting rods 35 also serve to connect and fix the third module body 31. The telescopic actuator 32 can be a telescopic cylinder; no specific limitation is imposed.

[0118] In this application, the modular configuration of the rotary drive module 20 and the clamping drive module 30 can be achieved in several ways. In addition to the aforementioned method of directly mounting the clamping drive module 30 onto the rotary drive module 20, it is also possible to add a separate mounting platform and then integrate the rotary drive module 20 and the clamping drive module 30 onto this mounting platform. No specific restrictions are imposed.

[0119] Furthermore, regarding the implementation of moving the first inward-curling needle 11 and / or the second inward-curling needle 12 through a telescopic movement, a trigger portion 331 with varying width can be provided on the rod segment extending into the second through cavity on the clamping drive rod 33.

[0120] The first inward-curling needle 11 and / or the second inward-curling needle 12, which are adjustable in position, are also connected to the first module body 13 via an elastic member 14, so that the initial state between the first inward-curling needle 11 and the second inward-curling needle 12 is a clamping state. That is, as long as the position is adjustable, the inward-curling needle is also connected to the first module body 13 via the elastic member 14, and under the elastic force of the elastic member 14, it has a tendency to move towards the other inward-curling needle, so that in the initial state, the first inward-curling needle 11 and the second inward-curling needle 12 can clamp each other and be in a clamping state. In this application, it is preferable that both the first inward-curling needle 11 and the second inward-curling needle 12 are adjustable in position, that is, both the first inward-curling needle 11 and the second inward-curling needle 12 are connected to the first module body 13 via the elastic member 14. The elastic element 14 can be a compression spring. Specifically, it can be installed by opening a mounting port on the side of the first module body 13, with grooves corresponding to the mounting port on the needle segments of the first inward-curving needle 11 and the second inward-curving needle 12 extending into the first through cavity. The compression spring is then installed into the groove through the mounting port, and a sealing plate is used to seal the mounting port, thus compressing the spring. This ensures that the first inward-curving needle 11 and the second inward-curving needle 12 are clamped in their initial state. Of course, the installation arrangement of the elastic element 14 can also be other methods, without specific limitations.

[0121] Furthermore, the first inward-curling needle 11 and / or the second inward-curling needle 12, which are both position-adjustable, are also equipped with movable wheels 16 that can contact the trigger part 331 on the needle segments that extend into the first through cavity. Taking the first inward-curling needle 11 and the second inward-curling needle 12 as examples where both are position-adjustable, then both the first inward-curling needle 11 and the second inward-curling needle 12 are also equipped with movable wheels 16. When in the clamping state, there is a gap between the trigger part 331 and the movable wheel 16 to ensure that the rotation drive rod 23 does not affect the rotation of the first module body 13; while in the open state, the trigger part 331 contacts and abuts against the movable wheel 16, and the wider part of the contact part contacts the movable wheel 16, thereby radially pushing the movable wheel 16, so that the first inward-curling needle 11 and the second inward-curling needle open, thereby realizing the open state. This design eliminates the need for direct connection between the clamping connecting rod 35 and the first inner winding needle 11 and the second inner winding needle 12, making the installation and engagement between the winding needle module 10 and the clamping drive module 30 more convenient.

[0122] Furthermore, the trigger part 331 is a frustum-shaped structure with a gradually changing width. Specifically, as shown... Figure 5 As shown, it can be a frustum-shaped structure that gradually narrows towards the first module body 13 in the axial direction. When the clamping drive rod 33 moves towards the direction of extending into the first through cavity, the width of the part of the trigger part 331 that contacts the movable wheel 16 gradually increases, thereby gradually opening the first inward-curling needle 11 and the second inward-curling needle 12 to the open state. When the clamping drive rod 33 moves towards the direction of exiting the first through cavity, the width of the part of the trigger part 331 that contacts the movable wheel 16 gradually decreases until it no longer contacts the movable wheel 16. At this time, the first inward-curling needle 11 and the second inward-curling needle 12 are in a clamping state under the action of the elastic member 14. The width gradient design makes the process of the trigger part 331 triggering the first inward-curling needle 11 and the second inward-curling needle 12 to the open state smoother.

[0123] Of course, in addition to the above-mentioned implementation methods, the following implementation methods can also be used to achieve the movement of the first inward-curling needle 11 and / or the second inward-curling needle 12 through the telescopic movement:

[0124] Taking an example where both the first inward-curling needle 11 and the second inward-curling needle 12 are position-adjustable, a rotating connector is installed at one end of the clamping drive rod 33 that extends into the first through cavity. The first inward-curling needle 11 and the second inward-curling needle 12 are respectively hinged to connecting rods at their needle sections extending into the first through cavity, with one end of each connecting rod hinged to the rotating connector. When the clamping drive rod 33 moves out of the first through cavity, it pulls the connecting rods, causing the angle between the connecting rods to deform. Under the influence of the connecting rods, the first inward-curling needle 11 and the second inward-curling needle 12 move closer together to a clamping state. Conversely, when the clamping drive rod 33 moves into the first through cavity, it pushes the connecting rods, increasing the angle between the connecting rods. Under the influence of the connecting rods, the first inward-curling needle 11 and the second inward-curling needle 12 move away from each other to an open state. Those skilled in the art can make appropriate design variations based on this, without limitation.

[0125] like Figures 7 to 9 As shown, this application also discloses a winding device, including a device body 200, a body rotation mechanism 400, and a winding needle mechanism 100 designed above.

[0126] The needle winding mechanism 100 is mounted on the main body 200 of the device; the main body rotation mechanism 400 is connected to the main body 200 of the device and is used to drive the needle winding mechanism 100 to switch between preset work positions by driving the main body 200 of the device to rotate.

[0127] Furthermore, in order to facilitate the unloading of the wound battery cells, a needle insertion and removal mechanism 300 is also provided. The needle insertion and removal mechanism 300 is mounted on the main body 200 of the device and connected to the needle winding mechanism 100, and is used to drive the needle winding mechanism 100 to perform insertion and removal movements.

[0128] Furthermore, regarding the structural design of the main body 200 of the device, it can be as follows: Figure 7 As shown, the structure includes two circular fixed plates 41 and a connecting frame 45. The connecting frame 45 connects the two fixed plates 41 to form an I-shaped main body. A fixed frame 42 is rotatably mounted on the outside of the fixed plates 41. One of the fixed plates 41 is provided with a gear ring 43. By fixing the fixed frame 42, and through the main body rotation mechanism 400 engaging with the gear ring 43, the gear ring 43 is driven to rotate, thereby driving the I-shaped main body to rotate. This, in turn, drives the insertion / removal needle mechanism 300 and the winding needle mechanism 100 to rotate together. The main body rotation mechanism 400 may include a reversible rotary motor and gear transmission components, etc., and is not specifically limited.

[0129] Furthermore, in order to improve the smoothness of the insertion and extraction movements, a slide rail 44 is provided on the main body of this type of I-shaped structure, that is, between the two fixed plates 41, and the needle winding mechanism 100 is slidably mounted on the slide rail 44, and the needle winding module 10 extends out of the fixed plate 41 without the toothed ring 43.

[0130] Furthermore, the insertion / removal needle mechanism 300 may include a second rotary driver 51, a lead screw 52, ​​and a nut 53. The second rotary driver 51 may be a conventional servo motor, mounted on the device body 200, specifically on a fixed plate 41 equipped with a gear ring 43. The lead screw 52 is rotatably mounted on the device body 200, specifically between two fixed plates 41, and connected to the second rotary driver 51. The nut 53 is mounted on the needle winding mechanism 100, specifically on the second module body 21 of the needle winding mechanism 100, through which the lead screw 52 passes and is threadedly engaged with it. The second rotary driver 51 drives the lead screw 52 to rotate, thereby driving the needle winding mechanism 100 to perform the insertion / removal motion.

[0131] Furthermore, the needle winding mechanism 100 is provided with a lead screw through hole 211 for the nut 53 to be inserted. The nut 53 can be installed in the lead screw through hole 211 by fasteners such as bolts. That is, corresponding mounting holes can be made around the lead screw through hole 211 to facilitate the installation and engagement with the nut 53. The specific installation is not limited. The nut 53 is installed on the second module body 21 of the needle winding mechanism 100. Specifically, as shown... Figure 4 As shown, the lead screw through hole 211 can also be formed on the second module body 21. This design makes the installation and cooperation between the needle winding mechanism 100 and the needle insertion and removal mechanism 300 simpler and more convenient, and makes subsequent disassembly and maintenance easier.

[0132] Furthermore, in this application, there can be multiple needle winding mechanisms 100 installed on the main body 200 of the device, and multiple corresponding needle insertion and removal mechanisms 300, which are connected one-to-one with the needle winding mechanisms 100, enabling simultaneous operation at multiple workstations. Taking three as an example, the three needle winding mechanisms 100 are circumferentially distributed around the central axis of the two fixed plates 41. The three needle winding mechanisms 100 can switch between three workstations: a winding workstation, an adhesive application workstation, and a material unloading workstation. During operation, after one needle winding mechanism 100 completes winding, it rotates to the adhesive application workstation to apply adhesive, while the needle winding mechanism 100 with applied adhesive rotates to the material unloading workstation to unload material. The needle winding mechanism 100 with unloaded material then returns to the winding workstation to wind again, achieving simultaneous operation at multiple workstations and effectively improving work efficiency.

[0133] The winding device designed in this application is highly modular and integrated, easy to assemble and replace, and has a simple and compact overall structure with low equipment cost.

[0134] like Figures 10 to 11 As shown, this application also discloses a winding method applied to the above-designed needle winding device, comprising the following steps:

[0135] S1, before the material to be wound moves to the needle threading station, the clamping drive module in the needle winding mechanism is activated, driving the first inner winding needle and / or the second inner winding needle of the needle winding module to move until the first inner winding needle and the second inner winding needle are in an open state. It should be noted that the control of the clamping drive module 30 can be realized by a control device, or controlled by the control device based on a preset operating program. The specific control process can refer to the aforementioned implementation one or implementation two of the needle winding mechanism. For example, the clamping drive module 30 is activated, driving the clamping drive rod 33 to move in the direction of extending into the first through cavity. At this time, the width of the part of the trigger part 331 that contacts the movable wheel 16 gradually increases, thereby gradually opening the first inner winding needle 11 and the second inner winding needle 12 to the open state. The clamping drive module 30 is activated before the material to be wound reaches the needle threading station, that is, before the pre-wound translation to the needle threading station, which can further improve the overall winding efficiency.

[0136] S2, when the material to be wound moves to the point where one end passes between the first inner winding needle and the second inner winding needle, the clamping drive module is activated, driving the first inner winding needle and / or the second inner winding needle to move until the first inner winding needle and the second inner winding needle are clamped together. It should be noted that the specific control process of the clamping state can refer to the aforementioned implementation one or implementation two of the winding needle mechanism. For example, the clamping drive module 30 is activated, driving the clamping drive rod 33 to move in the direction of exiting the first through cavity. Then the width of the part of the trigger part 331 that contacts the movable wheel 16 gradually decreases until it no longer contacts the movable wheel 16. At this time, the first inner winding needle 11 and the second inner winding needle 12 are clamped under the action of the elastic member 14.

[0137] S3, after the diaphragm material in the material to be wound is cut, the rotary drive module in the winding needle mechanism is started to drive the winding needle module to rotate in order to wind the material to be wound.

[0138] S4, upon completion of winding the material to be wound, the main rotating mechanism is activated, driving the winding needle mechanism to switch positions. It should be noted that, taking the embodiment provided in the above winding device as an example, when there are three positions—a winding position, an adhesive application position, and a material unloading position—after completing the winding of the material to be wound, the winding needle mechanism 100 can be switched from the winding position to the adhesive application position for adhesive application, and then switched to the material unloading position for material unloading.

[0139] Furthermore, the specific steps involved in winding the material to be wound are as follows:

[0140] S31, based on the first preset winding length, pre-wind the material to be wound.

[0141] S32, based on the second preset winding length, accelerate the winding of the material to be wound.

[0142] S33, based on the third preset winding length, the material to be wound is wound at a uniform speed.

[0143] S34, based on the fourth preset winding length, decelerate the winding of the material to be wound.

[0144] S35: After the electrode material in the material to be wound is cut, the material to be wound is finished-wound based on the fifth preset winding length. If the winding process includes a cutting step of the electrode material in the material to be wound, then the cutting step of the electrode material is set before S33 and S34, that is, the electrode material is cut after the deceleration winding is completed, and then the finishing winding is performed until the part of the diaphragm longer than the electrode material can well wrap the outermost electrode material.

[0145] Taking a pre-winding translation and needle threading station and a diaphragm material cutting process as an example, the timing table of the improved winding device of this application under the above winding method is shown in Table 1 below:

[0146]

[0147] The timing table corresponding to the specific winding step in Table 1 is shown in Table 2 below:

[0148] Time / s 1.8 0.5 1.45 0.55 0.4 0.7

[0149] Table 2

[0150] The total time in the timing table 1 above is 7.04s.

[0151] It should be noted that the time consumed by the pre-winding and translation to the needle-threading station is the same as the time it takes for the material to be wound to reach the needle-threading station, as mentioned above. The needle-threading time refers to the time it takes for the material to be wound to pass between the first inner winding needle 11 and the second inner winding needle 12, plus the time it takes for the first inner winding needle 11 and the second inner winding needle 12 to form a clamping state. The time consumed by cutting the diaphragm is the time consumed by cutting the diaphragm material in the material to be wound. The winding time is the time consumed by completing the winding of the material to be wound. The time consumed by changing stations is the time consumed by rotating the needle-threading mechanism to the next station. The pre-winding time is the time consumed by pre-winding the material to be wound based on the first preset winding length. The acceleration time is the time consumed by accelerating the winding of the material to be wound based on the second preset winding length. The constant speed time is the time consumed by winding the material to be wound at a constant speed based on the third preset winding length. The deceleration time is the time taken to decelerate and wind the material to be wound, based on the fourth preset winding length. The cutting time is the time taken to cut the electrode material. The finishing winding time is the time taken to finish winding the material to be wound, based on the fifth preset winding length.

[0152] Based on the principle of controlling variables, winding tests were also conducted on traditional winding devices, and the timing table obtained is shown in Table 3 below:

[0153]

[0154] Table 3 shows the timing table for this specific winding step, which is shown in Table 4 below.

[0155] Time / s 2.22 0.8 1.77 1.03 0.4 1.1

[0156] Table 4

[0157] The total time in the above timing table 3 is 9.93s.

[0158] The comparison shows that the winding device designed in this application can save a certain amount of process time in terms of needle threading sequence, winding sequence and station change sequence compared with traditional winding devices, and can save about 2.89 seconds in total time.

[0159] In summary, the winding device incorporating the needle winding mechanism designed in this application can significantly improve winding efficiency and reduce production costs in actual winding operations. This is due to the modular design between the rotary drive module 20 and the clamping drive module 30 in the needle winding mechanism of this application, which results in higher integration and saves the spline shaft, thus optimizing the overall structure, making it more compact, and reducing its overall size and weight. The transmission distance between the rotary drive module 20 and the needle winding module 10, as well as between the clamping drive module 30 and the needle winding module 10, is reduced, thereby improving the control and driving efficiency of the rotary drive module 20 and the clamping drive module 30 on the needle winding module 10, which in turn shortens the winding time and increases winding efficiency.

[0160] The above provides a detailed description of the needle winding mechanism, winding device, and winding method provided in this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A needle winding mechanism, characterized in that, It includes a needle winding module (10), a rotation drive module (20), and a clamping drive module (30); The rotary drive module (20) is connected to the needle winding module (10) and is used to drive the overall rotational movement of the needle winding module (10); The clamping drive module (30) is connected to the needle winding module (10) and is used to drive the needle winding module (10) to switch between clamping state and opening state; The rotation drive module (20) and the clamping drive module (30) are modularly configured; The coiling needle module (10) includes a first module body (13), a first inward coiling needle (11), and a second inward coiling needle (12). The first module body (13) has a first through cavity; one end of the first inward-curling needle (11) and the second inward-curling needle (12) extends into the first through cavity; the rotary drive module (20) includes a rotary drive rod (23), one end of the rotary drive rod (23) is connected to the first module body (13), and has a second through cavity communicating with the first through cavity; The clamping drive module (30) includes a telescopic driver (32) and a clamping drive rod (33); the clamping drive rod (33) is movably inserted into the rotary drive rod (23); the telescopic end of the telescopic driver (32) is connected to the clamping drive rod (33) and is used to drive the clamping drive rod (33) to telescopically move; The clamping drive rod (33) has a trigger part (331) with varying width extending into the second through cavity; the first inward-curling needle (11) and / or the second inward-curling needle (12) with adjustable position are also connected to the first module body (13) through an elastic member (14) so ​​that the initial state between the first inward-curling needle (11) and the second inward-curling needle (12) is the clamping state; the first inward-curling needle (11) and / or the second inward-curling needle (12) with adjustable position are also rotatably provided with a movable wheel (16) that can contact the trigger part (331) on the needle segment extending into the first through cavity; when in the clamping state, there is a gap between the trigger part (331) and the movable wheel (16); when in the open state, the trigger part (331) and the movable wheel (16) contact and abut.

2. The needle winding mechanism according to claim 1, characterized in that, The rotary drive module (20) has a rotary connector that is connected to the needle winding module (10) and drives the needle winding module (10) to rotate as a whole; The clamping drive module (30) has a telescopic connector that moves through the rotary connector; The telescopic connector drives the needle winding module (10) to switch between a clamping state and an open state through telescopic movement.

3. The needle winding mechanism according to claim 2, characterized in that, The first inward-curling needle (11) and / or the second inward-curling needle (12) are tunably positioned on the first module body (13); The clamping drive module (30) is used to drive the coiling needle module (10) to switch between a clamping state and an open state by moving the first inward coiling needle (11) and / or the second inward coiling needle (12).

4. The needle winding mechanism according to claim 3, characterized in that, The first inward-curling needle (11) and the second inward-curling needle (12) are fixedly connected to the first module body (13) along their own length direction; The first inward-curling needle (11) is movably connected to the first module body (13) in a direction close to or away from the second inward-curling needle (12), and / or the second inward-curling needle (12) is connected to the first module body (13) in a direction close to or away from the first inward-curling needle (11).

5. The needle winding mechanism according to claim 4, characterized in that, The rotary drive module (20) includes a second module body (21), a first rotary driver (22), and a transmission assembly; The rotary drive rod (23) forms the rotary connector; The first rotary driver (22) is mounted on the second module body (21) and connected to the other end of the rotary drive rod (23) through the transmission assembly, for driving the first module body (13) to rotate by driving the rotary drive rod (23) to rotate.

6. The needle winding mechanism according to claim 5, characterized in that, The transmission assembly includes a drive pulley (241), a driven pulley (243), and a timing belt (242). The drive wheel (241) is mounted on the output shaft of the first rotary driver (22); The driven wheel (243) is connected to the other end of the rotary drive rod (23) and cooperates with the driving wheel (241) through the synchronous belt (242); The driven wheel (243) and / or the rotary drive rod (23) are rotatably mounted on the second module body (21).

7. The needle winding mechanism according to claim 5, characterized in that, The clamping drive module (30) includes a third module body (31); The third module body (31) is installed on the second module body (21); The clamping drive rod (33) forms the telescopic connector; The telescopic driver (32) is mounted on the main body (31) of the third module.

8. The needle winding mechanism according to claim 7, characterized in that, The trigger part (331) is a frustum structure with a gradually changing width.

9. The needle winding mechanism according to claim 7, characterized in that, The third module body (31) is connected to the second module body (21) by at least two connecting rods (35); At least two connecting rods (35) are parallel and spaced apart, and a connecting block (34) is slidably installed thereon. The telescopic end of the telescopic actuator (32) is connected to the clamping drive rod (33) via the connecting block.

10. A winding device, characterized in that, It includes a device body (200), a body rotation mechanism (400), and a needle winding mechanism (100) as described in any one of claims 1 to 9. The needle winding mechanism (100) is mounted on the main body (200) of the device; The main rotating mechanism (400) is connected to the device body (200) and is used to drive the needle winding mechanism (100) to switch between preset workstations by driving the device body (200) to rotate.

11. The winding apparatus according to claim 10, characterized in that, It also includes a pin insertion / removal mechanism (300); The insertion and removal needle mechanism (300) is mounted on the main body (200) of the device and connected to the needle winding mechanism (100) to drive the insertion and removal movement of the needle winding mechanism (100).

12. The winding apparatus according to claim 11, characterized in that, The main body of the device (200) includes two fixing plates (41) and a connecting frame (45); The connecting frame (45) is connected between the two fixing plates (41); Each of the aforementioned fixing plates (41) is rotatably provided with a fixing frame (42); One of the fixing plates (41) is also provided with a toothed ring (43); The main rotating mechanism (400) is connected to the gear ring (43) and is used to drive the gear ring (43) to rotate.

13. The winding apparatus according to claim 12, characterized in that, A slide rail (44) is also provided between the two fixed plates (41). The needle winding mechanism (100) is slidably mounted on the slide rail (44), and the needle winding module (10) extends out of the fixed plate (41) which is not provided with the toothed ring (43).

14. The winding apparatus according to claim 13, characterized in that, The insertion and removal pin mechanism (300) includes a second rotary driver (51), a lead screw (52), and a nut (53); The lead screw (52) is rotatably mounted on the main body (200) of the device. The nut (53) is mounted on the needle winding mechanism (100) and is passed through by the lead screw (52) and threadedly engaged with the lead screw (52); The second rotary driver (51) is connected to the lead screw (52).

15. The winding apparatus according to claim 14, characterized in that, The second rotary driver (51) is mounted on the fixed plate (41) on which the gear ring (43) is provided; The lead screw (52) is rotatably mounted between the two fixed plates (41); The needle winding mechanism (100) is provided with a lead screw through hole (211) for the nut (53) to be inserted. The nut (53) is installed on the lead screw through hole (211).

16. A winding method, characterized in that, The device for winding needles as described in any one of claims 10 to 15 includes the following steps: S1, before the material to be wound is moved to the needle threading station, the clamping drive module (30) in the needle winding mechanism (100) is started, which drives the first inner winding needle (11) and / or the second inner winding needle (12) of the needle winding module (10) to move until the first inner winding needle (11) and the second inner winding needle (12) are in an open state. S2, when the material to be wound moves to the point where one end passes between the first inner winding needle (11) and the second inner winding needle (12), the clamping drive module (30) is activated to drive the first inner winding needle (11) and / or the second inner winding needle (12) to move until the first inner winding needle (11) and the second inner winding needle (12) are clamped together. S3, after the diaphragm material in the material to be wound is cut, the rotary drive module (20) in the winding needle mechanism (100) is started to drive the winding needle module (10) to rotate in order to wind the material to be wound; S4. When the winding of the material to be wound is completed, the main body rotation mechanism (400) is started, which drives the winding needle mechanism (100) to switch positions.

17. The winding method according to claim 16, characterized in that, The winding of the material to be wound specifically includes the following steps: S31, based on the first preset winding length, pre-wind the material to be wound; S32, based on the second preset winding length, the material to be wound is wound at an accelerated speed; S33, based on the third preset winding length, the material to be wound is wound at a constant speed; S34, based on the fourth preset winding length, the material to be wound is wound at a reduced speed; S35, after the electrode material in the material to be wound is cut, the material to be wound is wound to finish based on the fifth preset winding length.

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