CN220290853U - Winding needle mechanism and winding device - Google Patents

Abstract

The utility model relates to a winding needle mechanism and a winding device. The needle winding mechanism comprises: the winding needle body is rotatably arranged around the axis of the winding needle body and is provided with a fixed needle extending lengthwise along the axial direction of the winding needle body; and a winding needle unit including: the adjusting assembly comprises a moving part, a first sliding block and a first transmission part; the first transmission piece is positioned at one side of the fixed needle in the width direction and is in transmission connection with the first slider and the moving piece, so that when the moving piece moves along the axial direction of the winding needle body, the first slider can be driven by the first transmission piece to move along the radial direction of the winding needle body; the winding needle shell is fixedly connected to the first sliding block.

Description

Winding needle mechanism and winding device

Technical Field

The utility model relates to the technical field of battery manufacturing equipment, in particular to a winding needle mechanism and a winding device.

Background

In the production process of the lithium battery, the battery core is formed by winding the diaphragm and the positive and negative pole pieces through a winding needle mechanism of a winding device. The coil diameter of the winding mechanism is related to the alignment degree of pole lugs of the pole pieces, the size of the battery core and the like, namely, the coil diameter of the coil needle mechanism directly influences the quality of the battery core, so that the coil needle mechanism with adjustable coil diameter is arranged.

However, a large number of parts for realizing the adjustment of the winding diameter are required to be added in the winding needle mechanism, and because the space inside the winding needle mechanism is limited, the size of the fixed needle which mainly plays a supporting role in the winding needle mechanism needs to be reduced, the bending moment resistance of the winding needle mechanism is greatly reduced due to the size reduction of the fixed needle, and the winding production of the winding core with larger size cannot be carried, namely, the winding production of the winding core with larger size cannot be compatible.

Disclosure of Invention

Accordingly, it is necessary to provide a winding needle mechanism and a winding device which can improve the above-mentioned drawbacks, in order to solve the problems that the winding needle mechanism in the prior art has poor bending moment resistance and cannot be compatible with winding of a winding core with a large size.

A needle winding mechanism comprising:

a winding needle body rotatably provided around an axis thereof, the winding needle body having a fixed needle extending lengthwise in an axial direction of the winding needle body; a kind of electronic device with high-pressure air-conditioning system

A winding needle unit comprising:

the adjusting assembly comprises a moving part, a first sliding block and a first transmission part; the moving piece is movably connected to the fixed needle along the axial direction of the winding needle main body, and the first sliding block is movably connected to the fixed needle along the radial direction of the winding needle main body; the first transmission piece is positioned at one side of the fixed needle in the width direction and is in transmission connection with the first sliding block and the moving piece, so that when the moving piece moves along the axial direction of the winding needle main body, the first sliding block can be driven by the first transmission piece to move along the radial direction of the winding needle main body;

the winding needle shell is fixedly connected to the first sliding block.

In one embodiment, the fixed needle has a first side, a second side, a third side, and a fourth side; the first side surface and the second side surface are respectively used as two side surfaces of the fixed needle in the radial direction of the winding needle main body, and the third side surface and the fourth side surface are connected between the first side surface and the second side surface and are opposite to each other in the width direction of the fixed needle;

the first transmission piece is positioned on one side of the fixed needle with the third side surface and/or one side of the fixed needle with the fourth side surface.

In one embodiment, at least two first sliders and at least two first transmission members are arranged on one side of the third side and/or one side of the fourth side of the fixed needle, the first sliders on the same side of the fixed needle are arranged at intervals along the longitudinal extension direction of the fixed needle, the first transmission members on the same side of the fixed needle are in one-to-one corresponding transmission connection with the first sliders, and the winding needle shell is fixedly connected to the first sliders.

In one embodiment, the adjusting assembly further comprises a first mounting shaft, and the moving member is arranged inside the fixed needle in a penetrating manner along the axial direction of the winding needle main body;

one end of the first installation shaft is installed on the moving part, and the other end of the first installation shaft penetrates out of the third side face or the fourth side face and is connected with the first transmission part.

In one embodiment, the adjusting assembly further comprises a second slider and a second transmission member, wherein the second slider is movably connected to the fixed needle along the radial direction of the winding needle main body, and the second transmission member is in transmission connection with the second slider and the moving member, so that when the moving member moves along the axial direction of the winding needle main body, the second slider can be driven by the second transmission member to move along the radial direction of the winding needle main body;

the winding needle unit further comprises an inner clamping needle fixedly connected to the second sliding block, and the inner clamping needle can be used for clamping or loosening the material belt when moving along the radial direction of the winding needle main body along with the second sliding block.

In one embodiment, the second transmission member is located at one side of the fixed needle in the width direction.

In one embodiment, the fixed needle has a first side, a second side, a third side, and a fourth side; the first side surface and the second side surface are respectively used as two side surfaces of the fixed needle in the radial direction of the winding needle main body, and the third side surface and the fourth side surface are connected between the first side surface and the second side surface and are opposite to each other in the width direction of the fixed needle;

the second transmission piece is positioned on one side of the fixed needle with the third side surface and/or one side of the fixed needle with the fourth side surface.

In one embodiment, at least two second sliders and at least two second transmission members are arranged on the side of the fixed needle with the third side surface and/or the side with the fourth side surface;

the second sliding blocks positioned on the same side of the fixed needle are arranged at intervals along the longitudinal extension direction of the fixed needle; and the second transmission parts positioned on the same side of the fixed needle are in transmission connection with the second sliding blocks in a one-to-one correspondence manner, and the inner clamping needle is fixedly connected to the second sliding blocks.

In one embodiment, the adjusting assembly further comprises a second mounting shaft, and the moving member is arranged inside the fixed needle in a penetrating manner along the axial direction of the winding needle main body;

one end of the second installation shaft is installed on the moving part, and the other end of the second installation shaft penetrates out of the third side face or the fourth side face and is connected with the second transmission part.

In one embodiment, two fixed needles are arranged, and the two fixed needles are oppositely arranged along the radial direction of the winding needle main body;

the two winding needle units are arranged on the two fixed needles respectively, the two winding needle shells are located at the periphery of the two fixed needles respectively, a slit for feeding strips to enter is formed between the two winding needle shells, and the two inner clamping needles are located between the two fixed needles and used for clamping the strips entering the slit.

In one embodiment, the needle winding mechanism further comprises a first material belt clamping plate and a second material belt clamping plate, wherein the first material belt clamping plate and the second material belt clamping plate are respectively fixedly connected with the two inner clamping needles and extend in the slit along the radial direction of the needle winding main body;

the first and second belt clamping plates are spaced apart from one another for feeding a belt.

In one embodiment, the gap between the first and second belt clamping plates is greater than the gap between the two inner clamping pins.

A winding device comprising a winding needle mechanism as described in any one of the embodiments above.

According to the winding needle mechanism and the winding device, the outer surface of the winding needle shell is used as a part of the winding surface for winding the material belt, namely, the material belt can be driven to be wound on the outer surface of the winding needle shell when the winding needle body rotates around the axis of the winding needle body, so that the battery cell is formed. When the rolling diameter of the rolling needle mechanism needs to be adjusted, the movable part is driven to axially move along the rolling needle main body by external force, so that the movable part drives the first sliding block to radially move along the rolling needle main body by the first transmission part, and then the first sliding block drives the rolling needle shell to radially move along the rolling needle main body, thereby achieving the purpose of adjusting the rolling diameter of the rolling needle mechanism. And because the first driving medium is located and decides needle one side in width direction, consequently can not occupy and decide the needle in the radial direction of needle main part (namely decide the thickness direction of needle) for decide the needle in the radial direction's of needle main part size (namely decide the thickness dimension of needle) increase as far as possible, thereby can improve the bending moment resistance ability of deciding the needle greatly, and then improve the bending moment resistance ability of needle mechanism greatly, be favorable to the coiling of the needle of compatible bigger size of rolling up, improve the compatibility of needle mechanism promptly.

Drawings

FIG. 1 is a schematic view of a needle winding mechanism according to an embodiment of the present utility model;

FIG. 2 is a front view of the needle winding mechanism shown in FIG. 1 (with the inner clip needle clamped, the needle winding housing omitted);

FIG. 3 is a top view of the needle winding mechanism shown in FIG. 2;

FIG. 4 is a front view of the needle winding mechanism shown in FIG. 1 (with the inner clip needle released and the needle winding housing omitted);

FIG. 5 is a schematic view of a part of the needle winding mechanism shown in FIG. 1;

FIG. 6 is a cross-sectional view of the needle winding mechanism shown in FIG. 1 (with the needle winding housing omitted);

FIG. 7 is a schematic view of an assembly structure of a fixed pin and a moving member of the needle winding mechanism shown in FIG. 1;

FIG. 8 is a schematic view of the needle winding mechanism of FIG. 1 from another perspective;

FIG. 9 is a schematic diagram of an assembly structure of two inner clamping pins of the needle winding mechanism shown in FIG. 1 with a first material tape clamping plate and a second material tape clamping plate;

fig. 10 is a schematic structural view of a winding device according to an embodiment of the utility model.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 4, an embodiment of the present utility model provides a winding needle mechanism 100, where the winding needle mechanism 100 is used for winding a material tape d (see fig. 10) to form a battery cell. The winding needle mechanism 100 includes a winding needle body 10 and a winding needle unit 20. The winding needle body 10 is rotatably provided around its own axis. The winding needle body 10 has a fixed needle 11 extending lengthwise along an axial direction X of the winding needle body 10, and the winding needle unit 20 is provided on the fixed needle 11.

The winding needle unit 20 comprises an adjustment assembly 21 and a winding needle housing 23. The adjusting assembly 21 includes a moving member 211, a first slider 212, and a first transmission member 213. The moving member 211 is movably connected to the fixed needle 11 in the axial direction X of the winding needle body 10. The first slider 212 is movably connected to the fixed needle 11 in the radial direction of the winding needle body 10. The winding needle housing 23 is fixedly connected to the first slider 212, so that the winding needle housing 23 follows the radial movement of the first slider 212 relative to the fixed needle 11 along the winding needle body 10 to increase or decrease the winding diameter of the winding needle mechanism 100. The first transmission member 213 is located at one side of the needle 11 in the width direction Y, and is in transmission connection with the first slider 212 and the moving member 211, so that when the moving member 211 moves along the axial direction X of the needle body 10, the first slider 212 can be driven by the first transmission member 213 to move along the radial direction of the needle body 10.

It should be noted that, the fixed pin 11 serves to carry the components of the winding pin unit 20 and the battery cells wound on the winding pin housing 23, so that the bending moment resistance of the fixed pin 11 directly determines the bending moment resistance of the winding pin mechanism 100, and the bending moment resistance of the winding pin mechanism 100 determines the capability of adapting to winding of the battery cells with larger size.

The above-mentioned winding needle mechanism 100, the outer surface of the winding needle housing 23 is a part of the winding surface for winding the material tape d, that is, the winding needle body 10 can drive the material tape d to be wound on the outer surface of the winding needle housing 23 when rotating around its own axis, so as to form the battery cell. When the rolling diameter of the rolling needle mechanism 100 needs to be adjusted, the moving member 211 is driven by an external force to move along the axial direction X of the rolling needle body 10, so that the moving member 211 drives the first slider 212 to move along the radial direction of the rolling needle body 10 through the first transmission member 213, and the first slider 212 drives the rolling needle housing 23 to move along the radial direction of the rolling needle body 10, thereby achieving the purpose of adjusting the rolling diameter of the rolling needle mechanism 100. Moreover, since the first transmission member 213 is located at one side of the fixed needle 11 in the width direction Y, the space of the fixed needle 11 in the radial direction of the winding needle body 10 (i.e., the thickness direction Z of the fixed needle 11) is not occupied, so that the size of the fixed needle 11 in the radial direction of the winding needle body 10 (i.e., the thickness dimension of the fixed needle 11) can be increased as much as possible, thereby greatly improving the bending moment resistance of the fixed needle 11, further greatly improving the bending moment resistance of the winding needle mechanism 100, and being beneficial to winding of winding needles with larger sizes, i.e., improving the compatibility of the winding needle mechanism 100.

It should be noted that, in order to be able to produce battery cells with different specifications, the winding pin housing 23 with corresponding specifications may be replaced according to the specifications of the battery cells to be produced. Because the bending moment resistance of the fixed pin 11 is strong in the application, the fixed pin can be compatible with the production of the battery cells with smaller size specifications and the production of the battery cells with larger size specifications.

It can be understood that the length direction of the fixed needle 11 is the axial direction X of the winding needle body 10, the thickness direction Z of the fixed needle 11 is the radial direction of the winding needle body 10, and the width direction Y of the fixed needle 11 is substantially perpendicular to both the length direction of the fixed needle 11 and the thickness direction Z of the fixed needle 11.

In particular to the embodiment, the fixed needle 11 has a first side d1, a second side d2, a third side d3 and a fourth side d4. The first side surface d1 and the second side surface d2 serve as both side surfaces of the fixed needle 11 in the radial direction of the winding needle body 10, respectively. The third side surface d3 and the fourth side surface d4 are connected between the first side surface d1 and the second side surface d2, and are opposite to each other in the width direction Y of the fixed needle 11. The first transmission element 213 is located on the side of the positioning needle 11 having the third side d3 and/or on the side having the fourth side d4. That is, the first transmission member 213 may be disposed only at one side of the fixed needle 11 having the third side surface d 3; or the first transmission member 213 is disposed only on the side of the fixed needle 11 having the fourth side d 4; or the first transmission member 213 is disposed at both the side of the fixed needle 11 having the third side d3 and the side having the fourth side d4.

In particular to the embodiment, at least two first sliders 212 and at least two first transmission members 213 are arranged on the side of the fixed needle 11 having the third side d3 or on the side having the fourth side d4. Of course, in other embodiments, at least two first sliders 212 and at least two first transmission members 213 may be arranged on both the side of the fixed needle 11 having the third side d3 and the side having the fourth side d4.

The first sliders 212 on the same side of the fixed needle 11 are disposed at intervals along the longitudinal extending direction of the fixed needle 11. The first driving members 213 located on the same side of the positioning pin 11 are in driving connection with the first sliding blocks 212 in a one-to-one correspondence. The winding needle housing 23 is fixedly connected to each first slider 212 to move together with each first slider 212. In this way, the winding needle housing 23 is mounted by using the plurality of first sliders 212 arranged at intervals along the longitudinal extending direction of the fixed needle 11 (i.e. the axial direction X of the winding needle body 10), so that the mounting of the winding needle housing 23 is more stable and reliable, and the movement of each first slider 212 along the radial direction of the winding needle body 10 is more stable and reliable.

It should be noted that, compared with the prior art that adopts a strip-shaped slider extending along the axial direction X of the winding needle body 10, the first slider 212 arranged at least at two intervals is simpler in structure, occupies smaller space, is beneficial to increasing the size of the fixing needle 11, and further improves the bending moment resistance of the fixing needle 11.

Further, at least two first sliders 212 located on the same side of the fixed needle 11 are arranged at intervals along the longitudinal extending direction of the fixed needle 11. Each first sliding block 212 positioned on one side of the positioning needle 11 corresponds to each first sliding block 212 positioned on the other side of the positioning needle 11 one by one, and the two corresponding first sliding blocks 212 are fixedly connected through a fixing block 217. Alternatively, the corresponding two first sliders 212 and the fixing block 217 therebetween may be integrally formed.

In particular to the embodiment shown in fig. 2 to 5, the pin 11 is provided with two first sliders 212 on both the side with the third side d3 and the side with the fourth side d4. The fixed needle 11 is provided with two first transmission members 213 on both the side with the third side d3 and the side with the fourth side d4. Each first transmission piece 213 is in transmission connection with the moving piece 211 and in transmission connection with each first sliding block 212 in a one-to-one correspondence manner, so that when the moving piece 211 moves along the axial direction X of the winding needle main body 10, each first sliding block 212 can be driven by each first transmission piece 213 to synchronously move along the radial direction of the winding needle main body 10, and then each first sliding block 212 jointly drives the winding needle shell 23 to move along the radial direction of the winding needle main body 10, so that the winding diameter of the winding needle mechanism 100 can be adjusted.

In the embodiment, the moving member 211 is inserted into the fixed needle 11 along the axial direction of the winding needle body 10, and is capable of sliding in the fixed needle 11 along the axial direction of the winding needle body 10. The adjustment assembly 21 further includes a first mounting shaft 218. One end of the first mounting shaft 218 is mounted on the moving member 211, and the other end of the first mounting shaft 218 is penetrated out of the third side d3 or the fourth side d4 and connected to the first transmission member 213.

Further, the fixed needle 11 is provided with a first avoiding groove b8 (see fig. 7) for the first mounting shaft 218 to pass through. Thus, the first avoidance groove b8 can avoid interference with the first mounting shaft 218 following the movement of the moving member 211 along the axial direction of the winding needle body 10.

In the embodiment, the first transmission member 213 is a first roller, and the first roller is rotatably connected to the moving member 211 through a first mounting shaft 218. The first sliding block 212 is provided with a first sliding groove b1, and the first roller is in rolling fit with the first sliding groove b1, so that the first roller can roll along the first sliding groove b 1. The first sliding groove b1 extends lengthwise along a direction inclined to the axial direction X of the needle body 10, so that the moving member 211 drives the first roller to roll along the first sliding groove b1 while driving the first roller to move along the axial direction X of the needle body 10, thereby driving the first slider 212 to move along the radial direction of the needle body 10 relative to the fixed needle 11.

Referring to fig. 7, further, the fixed needle 11 is provided with a first guide groove b4. The first slider 212 is disposed in the first guide groove b4, and a plurality of first balls (not shown) are disposed between the first slider 212 and the inner wall of the first guide groove b4, that is, the first slider 212 is in rolling fit with the inner wall of the first guide groove b4 through the first balls. In this way, the first ball is disposed on one hand, so that the first slider 212 can move along the radial direction of the needle body 10 more smoothly under the driving of the first roller; on the other hand, rolling friction is formed between the first slider 212 and the inner wall of the first guide groove b4, which is beneficial to reducing abrasion to the inner wall of the first guide groove b4 and prolonging service life.

Referring to fig. 2 to 4, in the embodiment of the present application, the adjusting assembly 21 further includes a second slider 214 and a second transmission member 215. The second slider 214 is movably connected to the fixed needle 11 in the radial direction of the winding needle body 10. The second transmission member 215 is in transmission connection with the second sliding block 214 and the moving member 211, so that when the moving member 211 moves along the axial direction X of the needle body 10, the second sliding block 214 can be driven by the second transmission member 215 to move along the radial direction of the needle body 10. The winding needle mechanism 100 further includes an inner clamping needle 25 fixedly connected to the second slider 214, and the inner clamping needle 25 can be used to clamp or unclamp the material tape d while following the movement of the second slider 214 in the radial direction of the winding needle body 10.

In this way, before winding, the moving member 211 is controlled to move along the axial direction X of the winding needle body 10, so that the second driving member 215 drives the second slider 214 to move along the radial direction of the winding needle body 10, and the second slider 214 drives the inner clamping needle 25 to move along the radial direction of the winding needle body 10, so that the inner clamping needle 25 clamps the fixed material belt d, and the material belt d can be smoothly wound on the winding needle housing 23 of the winding needle mechanism 100 during winding. Before the winding of the battery cell is completed and the battery cell on the winding needle mechanism 100 is discharged, the moving part 211 is controlled to move along the axial direction X of the winding needle main body 10, so that the second transmission part 215 drives the second sliding block 214 to move along the radial direction of the winding needle main body 10, and the second sliding block 214 drives the inner clamping needle 25 to move along the radial direction of the winding needle main body 10, so that the inner clamping needle 25 releases the material belt d, and the battery cell can be smoothly discharged from the winding needle mechanism 100.

Further, while the inner clamp needle 25 clamps the material tape d, the winding needle housing 23 is moved in the radial direction of the winding needle body 10 and away from the rotational axis of the winding needle body 10 to increase the winding diameter of the winding needle mechanism 100, i.e., to adjust the winding diameter of the winding needle mechanism 100 while connecting the material tape d to the winding needle mechanism 100. When the inner clamp needle 25 releases the material tape d, the winding needle housing 23 moves along the radial direction of the winding needle body 10 and is close to the rotation axis of the winding needle body 10, so as to reduce the winding diameter of the winding needle mechanism 100, facilitate the battery core wound on the winding needle mechanism 100 to be separated from the winding needle mechanism 100, and improve the speed of the winding needle mechanism 100 for performing the needle pulling action.

In some embodiments, the second transmission member 215 is located on one side of the fixed needle 11 in the width direction Y, so that the second transmission member 215 does not occupy the space of the fixed needle 11 in the radial direction of the needle body 10 (i.e. the thickness direction Z of the fixed needle 11), so that the dimension of the fixed needle 11 in the radial direction of the needle body 10 (i.e. the thickness dimension of the fixed needle 11) can be increased as much as possible, which is beneficial to further improving the bending moment resistance of the fixed needle 11, and further greatly improving the bending moment resistance of the needle winding mechanism 100, and being beneficial to adapting to winding needles with larger dimensions, i.e. improving the compatibility of the needle winding mechanism 100.

In particular embodiments, the second transmission member 215 is located on the side of the positioning needle 11 having the third side d3 and/or on the side having the fourth side d4. That is, the second transmission member 215 may be disposed only at one side of the fixed needle 11 having the third side surface d 3; or the second transmission member 215 is arranged only on the side of the fixed needle 11 having the fourth side surface d 4; or the second transmission member 215 is disposed at both the side of the fixed needle 11 having the third side d3 and the side having the fourth side d4.

In particular to the embodiment, at least two second sliders 214 and at least two second transmission members 215 are arranged on the side of the fixed needle 11 having the third side d3 or on the side having the fourth side d4. Of course, in other embodiments, at least two second sliders 214 and at least two second transmission members 215 may be arranged on both the side of the fixed needle 11 having the third side d3 and the side having the fourth side d4.

The second sliders 214 on the same side of the fixed needle 11 are disposed at intervals along the longitudinal extending direction of the fixed needle 11. The second driving parts 215 positioned on the same side of the positioning needle 11 are in one-to-one corresponding driving connection with the second sliding blocks 214. The inner clip pins 25 are fixedly coupled to the respective second sliders 214. In this way, the inner clip needle 25 is mounted by using the plurality of second sliders 214 arranged at intervals along the longitudinal extending direction of the fixed needle 11 (i.e. the axial direction X of the winding needle body 10), so that the inner clip needle 25 is mounted more firmly, and the movement of each second slider 214 along the radial direction of the winding needle body 10 is more stable and reliable.

It should be noted that, compared with the prior art that adopts a strip-shaped sliding block extending lengthwise along the axial direction X of the winding needle body 10, the second sliding block 214 arranged at least at two intervals is simpler in structure, occupies smaller space, is beneficial to increasing the size of the fixing needle 11, and further improves the bending moment resistance of the fixing needle 11.

Further, at least two second sliders 214 located on the same side of the fixed needle 11 are disposed at intervals along the longitudinal extending direction of the fixed needle 11. The second sliding blocks 214 positioned on one side of the positioning needle 11 are arranged in one-to-one correspondence with the second sliding blocks 214 positioned on the other side of the positioning needle 11.

In particular to the embodiment shown in fig. 2, the fixed needle 11 is provided with two second sliders 214 on both the side with the third side d3 and the side with the fourth side d4. The fixed needle 11 is provided with two second transmission members 215 on both the side with the third side d3 and the side with the fourth side d4. Each second transmission piece 215 is in transmission connection with the moving piece 211 and in transmission connection with each second sliding block 214 in a one-to-one correspondence manner, so that when the moving piece 211 moves along the axial direction X of the winding needle main body 10, each second sliding block 214 can be driven by each second transmission piece 215 to synchronously move along the radial direction of the winding needle main body 10, and then each second sliding block 214 jointly drives the inner clamping needle 25 to move along the radial direction of the winding needle main body 10 so as to clamp or unclamp the material belt d.

In the embodiment, the moving member 211 is inserted into the fixed needle 11 along the axial direction of the winding needle body 10, and is capable of sliding in the fixed needle 11 along the axial direction of the winding needle body 10. The adjustment assembly 21 further includes a second mounting shaft 219. One end of the second installation shaft 219 is installed on the moving member 211, and the other end of the second installation shaft 219 is penetrated out of the third side d3 or the fourth side d4 and is connected to the second transmission member 215.

Further, the fixed needle 11 is provided with a second avoidance groove b9 (see fig. 7) through which the second mounting shaft 219 passes. In this way, the second avoidance groove b9 can avoid the second installation shaft 219 from interfering with the second installation shaft 219 following the movement of the moving member 211 in the axial direction of the winding needle body 10.

In the embodiment, the second transmission member 215 is a second roller, and the second roller is rotatably connected to the moving member 211 through a second mounting shaft 219. The second sliding block 214 is provided with a second sliding groove b2, and the second roller is in rolling fit with the second sliding groove b2, so that the second roller can roll along the second sliding groove b 2. The second sliding groove b2 extends lengthwise along a direction inclined to the axial direction X of the needle body 10, so that the moving member 211 drives the second roller to roll along the second sliding groove b2 while driving the second roller to move along the axial direction X of the needle body 10, thereby driving the second slider 214 to move along the radial direction of the needle body 10 relative to the fixed needle 11.

Referring to fig. 7, further, a second guide groove b5 is formed on the needle 11, the second slider 214 is disposed in the second guide groove b5, and a plurality of second balls (not shown) are disposed between the second slider 214 and the inner wall of the second guide groove b5, that is, the second slider 214 is in rolling fit with the inner wall of the second guide groove b5 through the second balls. In this way, the second ball is disposed on the one hand, so that the second slider 214 can move along the radial direction of the needle body 10 more smoothly under the driving of the second roller; on the other hand, rolling friction is formed between the second slider 214 and the inner wall of the second guide groove b5, which is beneficial to reducing abrasion to the inner wall of the second guide groove b5 and prolonging service life.

Referring to fig. 1 to 4, in the embodiment of the present application, two fixed needles 11 are provided, and the two fixed needles 11 are disposed opposite to each other along the radial direction of the winding needle body 10. The number of the winding needle units 20 is two, and the two winding needle units 20 are respectively arranged on the two fixed needles 11. The two winding needle housings 23 are located at the outer peripheries of the two fixed needles 11, respectively, such that the outer surfaces of the two winding needle housings 23 are spliced to form a winding surface having a substantially circular or oval shape. The winding needle body 10 rotates to wind the material tape d onto the winding surface to form the battery cell. The winding diameter of the winding needle mechanism 100 is the diameter of the winding surface.

A slit a is formed between the two winding pin housings 23 into which the feed tape d enters. Two inner clamping pins 25 are located between the two fixed pins 11 and are used to clamp the strip d entering the slit a.

Referring to fig. 2, when the material strip d entering the slit a needs to be clamped, the moving members 211 on the two fixed pins 11 are controlled to move leftwards, so that the two moving members 211 respectively drive the first sliding blocks 212 on the two fixed pins 11 to move away from each other (i.e. move away from each other along the radial direction of the winding pin main body 10), thereby driving the two winding pin housings 23 to move away from each other along the radial direction of the winding pin main body 10, so as to increase the winding diameter of the winding pin mechanism 100. At the same time, the two moving members 211 respectively drive the second sliding blocks 214 on the two fixed needles 11 to approach each other (i.e., to approach each other along the radial direction of the winding needle body 10), so as to drive the two inner clamping needles 25 to approach each other along the radial direction of the winding needle body 10, so that the two inner clamping needles 25 clamp the material tape d entering the slit a.

Referring to fig. 4, when the material belt d entering the slit a needs to be loosened, the moving members 211 on the two fixed pins 11 are controlled to move rightward, so that the two moving members 211 respectively drive the first sliding blocks 212 on the two fixed pins 11 to approach each other (i.e. approach each other along the radial direction of the winding pin main body 10), thereby driving the two winding pin housings 23 to approach each other along the radial direction of the winding pin main body 10 to reduce the winding diameter of the winding pin mechanism 100. At the same time, the two moving parts 211 respectively drive the second sliding blocks 214 on the two fixed needles 11 to move away from each other (i.e. away from each other along the radial direction of the winding needle body 10), so as to drive the two inner clamping needles 25 to move away from each other along the radial direction of the winding needle body 10, and the two inner clamping needles 25 release the material tape d entering the slit a.

Referring to fig. 8 and 9, in an embodiment, the winding needle mechanism 100 further includes a first belt clip 219a and a second belt clip 219b. The first and second belt clips 219a and 219b are fixedly connected to the two inner clip pins 25, respectively, and each extend in the slit a in the radial direction of the winding pin body 10. The first and second belt clips 219a, 219b are spaced apart from each other for the entry of the belt d. In this way, when the two inner pins 25 are brought close to each other to clamp the web d entering the slit a, the first web clamp 219a and the second web clamp 219b can be brought close to each other, thereby restraining the web d between the first web clamp 219a and the second web clamp 219b. After the web d is cut by the downstream of the winding needle mechanism 100, the range of the swing of the cut end d1 (see fig. 10) of the web d is greatly reduced due to the limitation of the first web chuck 219a and the second web chuck 219b, so that the cut end d1 of the web d can be reliably wound on the outer surface of the winding needle housing 23 when the winding needle body 10 rotates.

Further, the gap between the first belt clip 219a and the second belt clip 219b is larger than the gap between the two inner clip needles 25. In this way, when the two inner nipping needles 25 are not clamped, the gap between the first and second belt nips 219a and 219b is sufficiently large so that the belt d that has entered the slit a can smoothly enter between the first and second belt nips 219a and 219 b; when the two inner clamping pins 25 clamp the material belt d, the first material belt clamping plate 219a and the second material belt clamping plate 219b do not completely clamp the material belt d, but only play a role in limiting the swing amount of the material belt d.

Referring to fig. 2, 6 and 7, in the embodiment of the present application, the needle body 10 further includes a rotating base 12, and the rotating base 12 is rotatably disposed around the axis of the needle body 10. One end of the two fixed needles 11 is fixedly connected to the rotating seat 12, and extends lengthwise along the axial direction X of the winding needle body 10. The two fixed needles 11 are oppositely arranged along the radial direction of the winding needle main body 10, and the rotation axis of the winding needle main body 10 is positioned between the two fixed needles 11. Thus, when winding is needed, the rotating seat 12 is controlled to rotate, so that the two fixed needles 11 and the winding needle shells 23 on the two fixed needles 11 are driven to rotate, and the material belt d is wound on the two winding needle shells 23 to form a battery core.

In the embodiment, the fixed needle 11 is provided with a guide groove b3 extending along the axial direction X of the winding needle body 10, and the moving member 211 is rotatably connected with a supporting wheel 216, and the supporting wheel 216 is in rolling fit in the guide groove b 3. Thus, when the moving member 211 receives an external force, the moving member 211 drives the supporting wheel 216 to roll along the guiding groove b3, that is, the moving member 211 moves along the axial direction X of the winding needle body 10 under the guiding action of the guiding groove b 3.

Alternatively, the number of the guide grooves b3 is plural, and the plurality of guide grooves b3 are arranged at intervals along the longitudinal extending direction of the needle 11. The number of the supporting wheels 216 is also plural, and the plurality of supporting wheels 216 are in rolling fit with the plurality of guide grooves b3 in a one-to-one correspondence.

Further, the adjustment assembly 21 also includes a return spring 218 (see fig. 6). One end of the return elastic member 218 abuts against one end of the moving member 211 near the rotating seat 12, and the other end of the return elastic member 218 abuts against the fixed needle 11. Thus, when the moving member 211 moves along the axial direction X of the needle winding mechanism 100 and toward the rotating base 12 under the action of the external force, the return elastic member 218 is further compressed. When the external force is removed, the moving member 211 moves away from the rotating seat 12 along the axial direction X of the needle body 10 under the elastic force provided by the restoring elastic member 218, and is restored. Alternatively, the return spring 218 may be a spring.

In particular, in the embodiment shown in fig. 6, when the end of the two moving members 211 facing away from the rotating base 12 is subjected to an external force, the moving members 211 move leftward (the reset elastic member 218 is further compressed), so as to drive the two needle winding shells 23 to move away from each other to increase the winding diameter of the needle winding mechanism 100, and simultaneously drive the two inner clamping needles 25 to move closer to each other to clamp the material tape d entering the slit a. When the external force born by the end parts of the two moving parts 211 away from the rotating seat 12 disappears, the two moving parts 211 move rightwards under the action of the elastic force of the corresponding reset elastic parts 218, so that the two winding needle shells 23 are driven to be close to each other to reduce the winding diameter of the winding needle mechanism 100, and the two inner clamping needles 25 are driven to be away from each other to loosen the material belt d in the slit a.

Based on the winding needle mechanism 100, the application also provides a winding device. Referring to fig. 10, the winding device includes a turret 200 and a winding needle mechanism 100 as described in any of the embodiments above. The winding pin mechanism 100 is mounted on a turret 200, and the turret 200 can drive the winding pin mechanism 100 to rotate so as to wind the material tape d onto the winding pin mechanism 100 to form a battery cell. The turret 200 can also drive the winding needle mechanism 100 to revolve between the stations to complete winding, ending and rubberizing, blanking and other processes.

For example, the turret 200 can drive the winding needle mechanism 100 to revolve to the winding station c1, and the winding needle mechanism 100 winds the material tape d at the winding station c1 to form the battery cell. The turret 200 can drive the winding needle mechanism 100 to revolve to a final rubberizing station c2, and rubberizing is carried out on the battery cells on the winding needle mechanism 100 at the final rubberizing station c2, so that the tail ends of the material strips d are adhered to the outer surfaces of the battery cells, and the material strips d of the battery cells are prevented from loosening. The turret 200 can drive the winding needle mechanism 100 to revolve to a blanking station c3, and the battery cells on the winding needle mechanism 100 are blanked at the blanking station c 3.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (13)

1. A needle winding mechanism, comprising:

a winding needle body rotatably provided around an axis thereof, the winding needle body having a fixed needle extending lengthwise in an axial direction of the winding needle body; a kind of electronic device with high-pressure air-conditioning system

A winding needle unit comprising:

the adjusting assembly comprises a moving part, a first sliding block and a first transmission part; the moving piece is movably connected to the fixed needle along the axial direction of the winding needle main body, and the first sliding block is movably connected to the fixed needle along the radial direction of the winding needle main body; the first transmission piece is positioned at one side of the fixed needle in the width direction and is in transmission connection with the first sliding block and the moving piece, so that when the moving piece moves along the axial direction of the winding needle main body, the first sliding block can be driven by the first transmission piece to move along the radial direction of the winding needle main body;

the winding needle shell is fixedly connected to the first sliding block.

2. The needle winding mechanism of claim 1, wherein the fixed needle has a first side, a second side, a third side, and a fourth side; the first side surface and the second side surface are respectively used as two side surfaces of the fixed needle in the radial direction of the winding needle main body, and the third side surface and the fourth side surface are connected between the first side surface and the second side surface and are opposite to each other in the width direction of the fixed needle;

the first transmission piece is positioned on one side of the fixed needle with the third side surface and/or one side of the fixed needle with the fourth side surface.

3. The needle winding mechanism according to claim 2, wherein at least two first sliders and at least two first transmission members are arranged on one side of the fixed needle with the third side and/or one side of the fixed needle with the fourth side, the first sliders on the same side of the fixed needle are arranged at intervals along the longitudinal extension direction of the fixed needle, the first transmission members on the same side of the fixed needle are in transmission connection with the first sliders in a one-to-one correspondence manner, and the needle winding housing is fixedly connected to the first sliders.

4. The needle winding mechanism according to claim 2, wherein the adjusting assembly further comprises a first mounting shaft, and the moving member is disposed through the interior of the fixed needle in the axial direction of the needle winding body;

one end of the first installation shaft is installed on the moving part, and the other end of the first installation shaft penetrates out of the third side face or the fourth side face and is connected with the first transmission part.

5. The needle winding mechanism according to claim 1, wherein the adjusting assembly further comprises a second slider and a second transmission member, the second slider is movably connected to the fixed needle in the radial direction of the needle winding body, and the second transmission member is in transmission connection with both the second slider and the moving member, so that when the moving member moves in the axial direction of the needle winding body, the second slider can be driven by the second transmission member to move in the radial direction of the needle winding body;

the winding needle unit further comprises an inner clamping needle fixedly connected to the second sliding block, and the inner clamping needle can be used for clamping or loosening the material belt when moving along the radial direction of the winding needle main body along with the second sliding block.

6. The needle winding mechanism of claim 5, wherein the second transmission member is located on one side of the fixed needle in the width direction.

7. The needle winding mechanism of claim 6, wherein the fixed needle has a first side, a second side, a third side, and a fourth side; the first side surface and the second side surface are respectively used as two side surfaces of the fixed needle in the radial direction of the winding needle main body, and the third side surface and the fourth side surface are connected between the first side surface and the second side surface and are opposite to each other in the width direction of the fixed needle;

the second transmission piece is positioned on one side of the fixed needle with the third side surface and/or one side of the fixed needle with the fourth side surface.

8. The needle winding mechanism according to claim 7, wherein at least two of the second sliders and at least two of the second transmission members are arranged on a side of the fixed needle having the third side and/or a side having the fourth side;

the second sliding blocks positioned on the same side of the fixed needle are arranged at intervals along the longitudinal extension direction of the fixed needle; and the second transmission parts positioned on the same side of the fixed needle are in transmission connection with the second sliding blocks in a one-to-one correspondence manner, and the inner clamping needle is fixedly connected to the second sliding blocks.

9. The needle winding mechanism of claim 7, wherein the adjustment assembly further comprises a second mounting shaft, the moving member passing through the interior of the fixed needle in the axial direction of the needle winding body;

one end of the second installation shaft is installed on the moving part, and the other end of the second installation shaft penetrates out of the third side face or the fourth side face and is connected with the second transmission part.

10. The needle winding mechanism according to claim 5, wherein the number of the fixed needles is two, and the two fixed needles are oppositely arranged along the radial direction of the needle winding main body;

the two winding needle units are arranged on the two fixed needles respectively, the two winding needle shells are located at the periphery of the two fixed needles respectively, a slit for feeding strips to enter is formed between the two winding needle shells, and the two inner clamping needles are located between the two fixed needles and used for clamping the strips entering the slit.

11. The needle winding mechanism of claim 10, further comprising a first strap clamp plate and a second strap clamp plate, the first strap clamp plate and the second strap clamp plate being fixedly connected to the two inner clamp needles, respectively, and extending radially of the needle winding body within the slit;

the first and second belt clamping plates are spaced apart from one another for feeding a belt.

12. The needle winding mechanism of claim 11, wherein a gap between the first web clamp and the second web clamp is greater than a gap between two of the inner clamp needles.

13. A winding device comprising a winding needle mechanism as claimed in any one of claims 1 to 12.