CN213184376U

CN213184376U - Winding needle device and winding equipment

Info

Publication number: CN213184376U
Application number: CN202021951069.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-05-11
Anticipated expiration: 2030-09-09

Abstract

The utility model relates to a roll up needle device and coiling equipment. This book needle device includes: the first winding needle assembly comprises a first winding needle, a first outer profile component and a first adjusting component, wherein the first outer profile component is movably connected to the first winding needle along the radial direction of the first winding needle, and the first adjusting component is arranged between the first winding needle and the first outer profile component and is configured to operably drive the first outer profile component to move along the radial direction of the first winding needle; and the second winding needle assembly comprises a second winding needle which is arranged opposite to the first winding needle, the second winding needle is positioned on one side of the first winding needle, which is back to the first outer contour part, and a clamping position for clamping the material belt is formed between the first winding needle and the second winding needle.

Description

Winding needle device and winding equipment

Technical Field

The utility model relates to a battery manufacture equipment technical field especially relates to a roll up needle device and coiling equipment.

Background

In the process of preparing the battery core, winding equipment is generally adopted to wind the pole pieces, the diaphragms and other material belts so as to form the battery core of the battery. At present, the cell technology is developed towards the trend of cell miniaturization and high-speed winding forming. However, the thickness of the supplied material of the material belt for winding cannot be guaranteed to be consistent, so that the tab of the battery cell formed by winding is dislocated, and the forming requirements of a small battery cell and high winding speed cannot be met.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a winding needle device and a winding apparatus for overcoming the above-mentioned defects, in order to solve the problem in the prior art that the tabs of the wound battery cell are misaligned due to the fact that the thickness of the supplied material of the material tape for winding cannot be guaranteed to be consistent.

A needle winding device comprising:

a first winding needle assembly including a first winding needle, a first outer profile member movably connected to the first winding needle in a radial direction of the first winding needle, and a first adjusting assembly disposed between the first winding needle and the first outer profile member and configured to operably urge the first outer profile member to move in the radial direction of the first winding needle; and

and the second winding needle assembly comprises a second winding needle which is arranged opposite to the first winding needle, the second winding needle is positioned on one side of the first winding needle, which is away from the first outer contour part, and a clamping position for clamping the material belt is formed between the first winding needle and the second winding needle.

In one embodiment, the first adjusting assembly comprises a first adjusting member having a first threaded section and a second threaded section along an axial direction thereof, the first threaded section being threadedly connected to the first outer profile member, and the second threaded section being threadedly connected to the first winding pin.

In one embodiment, the first adjusting assembly further comprises a first connecting block movably connected to the first winding pin in a radial direction of the first winding pin and connected to the first outer profile member;

the first threaded section is threadedly connected to the first connecting block.

In one embodiment, the first adjusting assembly further includes a first limiting member, and the first connecting block defines a first through hole;

the first limiting part penetrates through the first through hole and comprises a first connecting end and a first limiting end which are opposite, the first connecting end is connected with the first winding needle, and the first limiting end is positioned on one side, away from the first winding needle, of the first connecting block so as to limit the first connecting block between the first winding needle and the first limiting end.

In one embodiment, one of the first outer contour element and the first winding needle is provided with a first waist-shaped hole, and the first waist-shaped hole longitudinally extends along the moving direction of the first outer contour element;

the first adjusting component further comprises a first stop member, the first stop member is connected to the other one of the first outer profile member and the first winding needle and penetrates through the first waist-shaped hole.

In one embodiment, a side of the first outer profile element facing the first winding needle is provided with a first guide groove, and the first winding needle is accommodated in the first guide groove and is in sliding fit with a side wall of the first guide groove.

In one embodiment, the first thread section and the second thread section have the same rotation direction and different thread pitches; or

The first thread segments are oppositely threaded to the second thread segments.

In one embodiment, the first adjusting assembly further comprises a first fixing block, the first fixing block is mounted on the first winding pin, and the second threaded section of the first adjusting member is in threaded connection with the first fixing block.

In one embodiment, the first winding needle is provided with a first mounting groove and a first threaded hole penetrating through the side wall of the first mounting groove, and the first fixing block is at least partially positioned in the first mounting groove;

the first adjusting assembly further comprises a first threaded fastener, the first threaded fastener is in threaded connection with the first threaded hole, and one end of the first threaded fastener penetrates into the first mounting groove and abuts against the first fixing block.

In one embodiment, the second needle winding assembly further comprises a second outer profile and a second adjustment assembly;

the second outer profile is movably connected to the second winding needle along the radial direction of the second winding needle and is positioned on one side of the second winding needle, which is far away from the first winding needle;

the second adjusting assembly is disposed between the second winding pin and the second outer profile and configured to operably drive the second outer profile to move in a radial direction of the second winding pin.

In one embodiment, the second adjustment assembly further comprises a second adjustment member having a third threaded section and a fourth threaded section along an axial direction thereof, the third threaded section being threadedly coupled to the second outer profile member, and the fourth threaded section being threadedly coupled to the second winding pin.

In one embodiment, the second adjusting assembly further comprises a second connecting block movably connected to the second winding pin in a radial direction of the second winding pin and connected to the second outer profile;

the third threaded section is in threaded connection with the second connecting block.

In one embodiment, the second adjusting assembly further includes a second limiting member, and the second connecting block is provided with a second through hole;

the second locating part is arranged in the second through hole in a penetrating mode, the second locating part comprises a second connecting end and a second limiting end which are opposite, the second connecting end is connected with the second winding needle, and the second limiting end is located on one side, away from the second winding needle, of the second connecting block, so that the second connecting block is limited between the second winding needle and the second limiting end.

In one embodiment, one of the second outer contour piece and the second winding needle is provided with a second waist-shaped hole, and the second waist-shaped hole longitudinally extends along the moving direction of the second outer contour piece;

the second adjusting component also comprises a second stop member which is connected with the other one of the second outer profile member and the second winding needle and penetrates through the second waist-shaped hole.

In one embodiment, a side of the second outer profile facing the second winding needle is provided with a second guide groove, and the second winding needle is accommodated in the second guide groove and is in sliding fit with a side wall of the second guide groove.

In one embodiment, the third thread segments and the fourth thread segments have opposite rotation directions and different thread pitches; or

The third thread segments and the fourth thread segments have the same handedness.

In one embodiment, the second adjusting assembly further comprises a second fixing block, the second fixing block is mounted on the second winding pin, and the third threaded section of the second adjusting member is in threaded connection with the second fixing block.

In one embodiment, the second winding needle is provided with a second mounting groove and a second threaded hole penetrating through the side wall of the second mounting groove, and the second fixing block is at least partially positioned in the second mounting groove;

the second adjusting assembly further comprises a second threaded fastener, the second threaded fastener is in threaded connection with the second threaded hole, and one end of the second threaded fastener penetrates into the second mounting groove and abuts against the second fixing block.

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

According to the winding needle device and the winding equipment, the first outer contour part is arranged on the first winding needle, so that the side surfaces of the first outer contour part and the second winding needle, which are deviated from each other, are spliced to form a winding surface for winding the material belt. The first adjusting component can drive the first outer contour component to move along the radial direction of the first winding needle, so that the circumference of the winding surface is adjusted. When the thickness dimension of material coming from the material area was big or when small partially, usable first adjusting part ordered about first outline spare and removed to adjust the girth of coiling the face, and then guarantee that the position of utmost point ear is accurate, avoid appearing the phenomenon of utmost point ear dislocation, can satisfy small-size electric core and high winding speed's shaping demand.

Drawings

Fig. 1 is a schematic structural view of a needle winding device according to a first embodiment of the present invention;

FIG. 2 is a top view of the needle winding device shown in FIG. 1 (with some elements omitted);

FIG. 3 is a schematic structural view of a first needle winding assembly of the needle winding device shown in FIG. 1 (some elements are omitted);

FIG. 4 is a schematic view of an assembly structure of a first connecting block of the first needle winding assembly of the needle winding device shown in FIG. 1 (some elements are omitted);

FIG. 5 is a schematic view of the assembled structure of the first connection block shown in FIG. 4 from another perspective;

FIG. 6 is a schematic view of an assembly structure of a first fixing block of the first needle winding assembly of the needle winding device shown in FIG. 1;

fig. 7 is a schematic structural view of a needle winding device according to a second embodiment of the present invention;

FIG. 8 is a schematic structural view of a first needle winding assembly of the needle winding device shown in FIG. 7 (the first outer contour member is omitted);

FIG. 9 is a schematic view of the first needle winding assembly of the needle winding device shown in FIG. 7;

fig. 10 is a top view of the first needle winding assembly of the needle winding device shown in fig. 7.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to 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", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" 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 as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 4, a needle winding device according to a first embodiment of the present invention includes a first needle winding assembly 10 and a second needle winding assembly 20.

The first needle assembly 10 includes a first needle 11, a first outer profile member 12, and a first adjustment assembly 13. The first outer contour element 12 is movably connected to the first winding needle 11 in a radial direction of the first winding needle 11. The first adjusting assembly 13 is disposed between the first winding pin 11 and the first outer contour member 12, and the first adjusting assembly 13 is configured to operatively drive the first outer contour member 12 to move along a radial direction of the first winding pin 11. The second winding needle assembly 20 comprises a second winding needle 21 arranged opposite to the first winding needle 11, the second winding needle 21 is located on a side of the first winding needle 11 facing away from the first outer contour member 12, and a clamping position for clamping the material tape is formed between the first winding needle 11 and the second winding needle 21.

In the winding needle device, the first outer contour member 12 is arranged on the first winding needle 11, so that the side surfaces of the first outer contour member 12 and the second winding needle 21 which are away from each other are spliced to form a winding surface for winding the material belt. The first adjusting assembly 13 can drive the first outer contour element 12 to move along the radial direction of the first winding needle 11, thereby adjusting the circumference of the winding surface. When the thickness dimension of the material that the material strap came is bigger than normal or when littleer, usable first adjusting part 13 ordered about first outline spare 12 and removed to adjust the girth of coiling the face, and then guarantee that the position of utmost point ear is accurate, avoid appearing the phenomenon of utmost point ear dislocation, can satisfy small-size electric core and high winding speed's shaping demand.

It should be noted that, when detecting that the thickness of the supplied material in the material tape is too large, the first adjusting assembly 13 drives the first outer contour member 12 to move toward the direction close to the first winding needle 11, so that the circumference of the winding surface becomes smaller; when the thickness of the material belt is smaller, the first adjusting component 13 drives the first outer contour component 12 to move towards the direction away from the first winding needle, so that the circumference of the winding surface is increased. So, all can guarantee the position accuracy of utmost point ear under the thickness size that the material was come in the material area is bigger than normal or the condition of littleer, prevents the phenomenon of utmost point ear dislocation.

It should be further noted that, when a battery cell is completely wound and needs to be discharged, the first outer profile member 12 is driven by the first adjusting assembly 13 to move toward the direction close to the first winding needle 11, so that the circumference of the winding surface is reduced, and the inner ring of the battery cell is separated from part of the winding surface, so that the first winding needle assembly 10 and the second winding needle assembly 20 can be smoothly taken out from the battery cell, thereby avoiding the phenomenon that the inner ring of the battery cell is taken away or crumpled, and facilitating the improvement of the quality of the battery cell.

In the embodiment of the present invention, the first adjusting assembly 13 includes a first connecting block 131 and a first adjusting member 132. The first connecting block 131 is movably connected to the first winding pin 11 along a radial direction of the first winding pin 11 and is connected to the first outer contour member 12, so that the first outer contour member 12 can move along the radial direction of the first winding pin 11 along with the first connecting block 131. The first adjustment member 132 has a first threaded section and a second threaded section along an axial direction thereof. The first thread section is threadedly coupled to the first connecting block 131 and the second thread section is threadedly coupled to the first winding pin 11. Thus, the first adjusting member 132 and the first connecting block 131 can move relative to the first winding needle 11 in the radial direction of the first winding needle 11 by rotating the first adjusting member 132, and the first outer contour member 12 follows the first connecting block 131 to move relative to the first winding needle 11, so as to achieve the purpose of adjusting the circumference of the winding surface. It should be noted that the first connecting block 131 and the first outer contour member 12 may be integrally formed or fastened by a fastener, and is not limited herein.

Referring to fig. 4 and 5, in an embodiment, the first adjusting assembly 13 further includes a first guide post 134 and a first guide sleeve 135, the first guide post 134 is mounted on the first connecting block 131, the first guide sleeve 135 is mounted on the first winding pin 11, and the first guide post 134 is slidably fitted in the first guide sleeve 135 to guide the movement of the first connecting block 131 relative to the first winding pin 11, so that the movement of the first connecting block 131 is more stable and reliable. Of course, in other embodiments, the first guide post 134 may also be mounted to the first winding pin 11, the first guide sleeve 135 may also be mounted to the first connecting block 131, and the first guide post 134 is slidably fitted in the first guide sleeve 135, and may also guide the movement of the first connecting block 131 relative to the first winding pin 11.

In specific embodiments, the first thread segments and the second thread segments have the same rotation direction and different thread pitches. Thus, when the first adjusting member 132 is rotated by a certain angle, the distance that the first outer profile member 12 moves along with the first connecting block 131 relative to the first winding needle 11 is equal to the difference between the distance that the first connecting block 131 moves relative to the first adjusting member 132 and the distance that the first adjusting member 132 moves relative to the first winding needle 11. In addition, since the thread pitches of the first thread section and the second thread section are different, the difference between the distance that the first connecting block 131 moves relative to the first adjusting member 132 and the distance that the first adjusting member 132 moves relative to the first winding needle is not zero as long as the first adjusting member 132 is rotated, and thus the circumference of the winding surface is continuously and steplessly finely adjusted. It should be noted that, the position of the first outer contour member 12 relative to the first winding needle 11 is adjusted by using the difference between the moving distances of the first connecting block 131 and the first adjusting member 132, so that the first outer contour member 12 can be more conveniently finely adjusted, the thread pitches of the first thread section and the second thread section can be properly increased, the processing difficulty of the thread is favorably reduced, and the processing precision of the thread is improved.

For example, when the first adjusting member 132 rotates one turn, due to the existence of the second thread segment, the first adjusting member 132 moves 0.75mm relative to the first winding needle in the direction close to the first winding needle 11, and then the first adjusting member 132 drives the first connecting block 131 and the first outer contour member 12 to also move 0.75mm relative to the first winding needle 11 in the direction close to the first winding needle 11; meanwhile, due to the existence of the first thread segments, the first connecting block 131 and the first outer contour member 12 move 0.70mm relative to the first adjusting member 132 in a direction away from the first winding needle 11, and finally the first connecting block 131 and the first outer contour member 12 move 0.75mm-0.70mm, 0.05mm relative to the first winding needle 11 in a direction close to the first winding needle 11.

Of course, in other embodiments, the direction of rotation of the first thread segments and the second thread segments may be reversed. Thus, when the first adjusting member 132 is rotated by a certain angle, the distance that the first outer profile member 12 moves along with the first connecting block 131 relative to the first winding needle 11 is equal to the sum of the distance that the first connecting block 131 moves relative to the first adjusting member 132 and the distance that the first adjusting member 132 moves relative to the first winding needle 11.

In an embodiment, the first adjusting assembly 13 further includes a first elastic member 136, and the first elastic member 136 abuts between the first connecting block 131 and the first winding pin 11 to provide a pre-tightening force for moving the first connecting block 131 away from the first winding pin 11. In this way, the first connecting block 131 and the first adjusting member 132, and the threaded connection between the first adjusting member 132 and the first winding needle 11 can be effectively prevented from being loosened under the action of the pre-tightening force provided by the first elastic member 136.

Specifically, in the embodiment, the first adjusting assembly 13 further includes a first limiting member 133, and the first connecting block 131 has a first through hole. The first limiting member 133 is disposed through the first through hole, and the first limiting member 133 includes a first connection end 1332 and a first limiting end 1331, which are opposite to each other, the first connection end 1332 is connected (e.g., screwed) with the first winding needle 11, the first limiting end 1331 is located at a side of the first connection block 131 departing from the first winding needle 11, so as to limit the first connection block 131 between the first winding needle 11 and the first limiting end 1331, and prevent the first connection block 131 from being separated from the first adjusting member 132 or the first adjusting member 132 from being separated from the first winding needle 11 in the process of rotating the first adjusting member 132. Alternatively, the first limiting member 133 may be a limiting screw.

In an embodiment, the first winding pin 11 is provided with a first sliding slot 121 (see fig. 2), and the first connecting block 131 is slidably fitted in the first sliding slot 121 to guide the movement of the first connecting block 131 relative to the first winding pin 11, so that the movement of the first connecting block 131 is further stable and reliable. Optionally, one end of the first connecting block 131 is slidably engaged with the first winding needle 11 through the first guide post 134 and the first guide sleeve 135, and the opposite end of the first connecting block 131 is slidably engaged with the first winding needle 11 through the first sliding groove 121, so that the first connecting block 131 and the first outer profile 12 moving together with the first connecting block 131 move more stably and reliably relative to the first winding needle 11.

Since the first adjusting member 132 is screwed to both the first connecting block 131 and the first winding pin 11, it is difficult to adjust the initial positions of the first connecting block 131 and the first winding pin 11 (i.e., the initial positions of the first connecting block 131 and the first winding pin 11 on the first adjusting member 132) at the time of assembly. Referring to fig. 1, 3 and 6, in one embodiment, the first adjusting assembly 13 further includes a first fixing block 137, the first fixing block 137 is mounted on the first winding pin 11, and the second threaded section of the first adjusting member 132 is threadedly coupled to the first fixing block 137, so that the first adjusting member 132 is indirectly threadedly coupled to the first winding pin 11 through the first fixing block 137. That is, the first threaded section of the first adjusting member 132 is threadedly coupled to the first connecting block 131, the second threaded section of the first adjusting member 132 is threadedly coupled to the first fixing block 137, and the first fixing block 137 is mounted to the first winding pin 11. Thus, during assembly, first, the first connecting block 131 is threadedly coupled to the first threaded section of the first adjusting member 132, and the first adjusting member 132 is rotated to find an initial position of the first connecting block 131 on the first adjusting member 132. Then, the first fixing block 137 is screwed with the second threaded end of the first adjusting member 132, and the first fixing block 137 is rotated to align the initial position of the first fixing block 137 on the first adjusting member 132. Then, the first fixing block 137 is mounted to the first winding needle 11.

Further, the first winding pin 11 is provided with a first mounting groove and a first threaded hole 111 penetrating through a sidewall of the first mounting groove. The first fixing block 137 is at least partially positioned in the first mounting groove. The first adjustment assembly 13 also includes a first threaded fastener that is threadably coupled within the first threaded bore 111. One end of the first threaded fastener penetrates into the first mounting groove and abuts against the first fixing block 137, so that the first fixing block 137 is fastened in the first mounting groove, and the first fixing block 137 is fastened. So, only need screw up first threaded fastener when first fixed block 137 needs to be fastened can, only need unscrew first threaded fastener when first fixed block 137 needs to be lifted off can for the fastening of first fixed block 137 is simple swift with the dismantlement. It should be noted that the first threaded fastener may be provided in plural numbers (i.e., two or more), and the plural first threaded fasteners may be disposed at opposite sides of the first fixing block 137. Alternatively, the first threaded fastener may be a jackscrew, a screw, a threaded rod, or the like, which is not limited herein.

It should be noted that, the first adjusting assemblies 13 are disposed at both lengthwise ends of the first outer contour member 12, and the first adjusting assemblies 13 at both ends of the first outer contour member 12 can be adjusted, so that the adjustment of the first outer contour member 12 is more accurate. Of course, in other embodiments, one end of the first outer profile element 12 is provided with the first adjustment assembly 13 and the opposite end is provided with a guide structure for guiding the first outer profile element 12. Alternatively, the guiding structure may be a guide post and a guide sleeve. For example, the guide post is mounted to the first winding pin 11, the guide sleeve is mounted to the first outer profile 12, and the guide post and the guide sleeve are slidably engaged.

Referring to fig. 1, in an embodiment of the present invention, the second needle winding assembly 20 further includes a second outer profile 22 and a second adjusting assembly 23. The second outer contour 22 is connected to the second winding needle 21 movably in the radial direction of the second winding needle 21 and is located on the side of the second winding needle 21 facing away from the first winding needle 11. The second adjusting assembly 23 is disposed between the second winding pin 21 and the second outer contour 22, and is configured to operatively drive the second outer contour 22 to move in a radial direction of the second winding pin 21.

In this way, since the first outer contour member 12 is provided on the first winding needle 11 and the second outer contour member 22 is provided on the second winding needle 21, the side surfaces of the first outer contour member 12 and the second outer contour member 22 facing away from each other are spliced to form a winding surface for winding the material tape. The first adjusting assembly 13 can drive the first outer contour element 12 to move along the radial direction of the first winding needle 11, and the second adjusting assembly 23 can drive the second outer contour element 22 to move along the radial direction of the second winding needle 21, so as to adjust the circumference of the winding surface. When the thickness dimension of material area supplied material is bigger than normal or when being small, usable first adjusting part 13 and second adjusting part 23 order about first outline spare 12 and the removal of second outline spare 22 respectively to adjust the girth of coiling face, and then guarantee the position accuracy of utmost point ear, avoid appearing the phenomenon of utmost point ear dislocation, can satisfy small-size electric core and high coiling speed's shaping demand.

It should be noted that, when it is detected that the thickness of the supplied material is too large, the first adjusting assembly 13 drives the first outer contour element 12 to move toward the direction close to the first winding needle 11, and the second adjusting assembly 23 drives the second outer contour element 22 to move toward the direction close to the second winding needle 21, so that the circumference of the winding surface becomes smaller; when the thickness of the material belt material is smaller, the first adjusting component 13 drives the first outer contour component 12 to move towards the direction away from the first winding needle, and the second adjusting component 23 drives the second outer contour component 22 to move towards the direction away from the second winding needle, so that the circumference of the winding surface is increased. So, all can guarantee the position accuracy of utmost point ear under the thickness size that the material was come in the material area is bigger than normal or the condition of littleer, prevents the phenomenon of utmost point ear dislocation.

It should be further noted that, when a battery cell is completely wound and needs to be discharged, the first adjusting assembly 13 may drive the first outer contour member 12 to move toward the direction close to the first winding pin 11, and the second adjusting assembly 23 drives the second outer contour member 22 to move toward the direction close to the second winding pin 21, so that the circumference of the winding surface is reduced, and at this time, the inner ring of the battery cell is separated from part of the winding surface, so that the first winding pin assembly 10 and the second winding pin assembly 20 can be smoothly taken out of the battery cell, the phenomenon that the inner ring of the battery cell is taken away or crumpled is avoided, and the quality of the battery cell is improved.

In some embodiments, the second needle winding assembly 20 includes a second connecting block 231 and a second adjusting member. The second connecting block 231 is movably connected to the second winding pin 21 in a radial direction of the second winding pin and is connected to the second outer profile 22 so that the second outer profile 22 can move in the radial direction of the second winding pin 21 together with the second connecting block 231. The second adjustment member has a third threaded section and a fourth threaded section along an axial direction thereof. The third thread section is threadedly connected to the second connecting block 231, and the fourth thread section is threadedly connected to the second winding pin 21. Thus, the second adjusting member and the second connecting block 231 can move relative to the second winding needle 21 in the radial direction of the second winding needle 21 by rotating the second adjusting member, and the second outer contour member 22 follows the second connecting block 231 to move relative to the second winding needle 21, so as to achieve the purpose of adjusting the circumference of the winding surface. It should be noted that the second connecting block 231 and the second outer contour 22 may be integrally formed or fastened by a fastener, and is not limited herein.

Specifically, in the embodiment, the second adjusting assembly 23 further includes a second guide pillar and a second guide sleeve, the second guide pillar is mounted on the second connecting block 231, the second guide sleeve is mounted on the second winding pin 21, and the second guide pillar is slidably fitted in the second guide sleeve to guide the movement of the second connecting block 231 relative to the second winding pin 21, so that the movement of the second connecting block 231 is more stable and reliable. Of course, in other embodiments, the second guide post may also be mounted to the second winding pin 21, and the second guide sleeve may also be mounted to the second connection block 231, and the second guide post is slidably fitted in the second guide sleeve, and may also guide the movement of the second connection block 231 relative to the second winding pin 21.

In specific embodiments, the third thread segments and the fourth thread segments have the same rotation direction and different thread pitches. Thus, when the second adjusting member is rotated by a certain angle, the distance that the second outer contour member 22 moves along with the second connecting block 231 relative to the second winding needle 21 is equal to the difference between the distance that the second connecting block 231 moves relative to the second adjusting member and the distance that the second adjusting member moves relative to the second winding needle 21. In addition, since the thread pitches of the third thread segment and the fourth thread segment are different, the difference between the distance that the second connection block 231 moves relative to the second adjusting element and the distance that the second adjusting element moves relative to the second winding needle 21 is not zero by rotating the second adjusting element, and the circumferential length of the winding surface is finely adjusted continuously and steplessly. It should be noted that, the position of the second outer contour 22 relative to the second winding pin 21 is adjusted by using the difference between the moving distances of the second connecting block 231 and the second adjusting member, so that the second outer contour 22 can be more conveniently finely adjusted, the thread pitches of the third thread section and the fourth thread section can be properly increased, the processing difficulty of the thread is favorably reduced, and the processing precision of the thread is improved.

For example, when the second adjusting member rotates one turn, due to the existence of the fourth thread section, the second adjusting member moves 0.75mm relative to the second winding needle 21 in the direction close to the second winding needle 21, and then the second adjusting member drives the second connecting block 231 and the second outer profile 22 to also move 0.75mm relative to the second winding needle 21 in the direction close to the second winding needle 21; meanwhile, due to the existence of the third thread segments, the second connection block 231 and the second outer contour 22 move 0.70mm relative to the second adjusting member in the direction away from the second winding needle 21, and finally the second connection block 231 and the second outer contour 22 move 0.75mm-0.70mm, namely 0.05mm, relative to the second winding needle 21 in the direction close to the second winding needle 21.

Of course, in other embodiments, the rotation directions of the third thread segments and the fourth thread segments may be reversed. Thus, when the second adjusting member is rotated by a certain angle, the distance that the second outer contour member 22 moves along with the second connecting block 231 relative to the second winding pin 21 is equal to the sum of the distance that the second connecting block 231 moves relative to the second adjusting member and the distance that the second adjusting member moves relative to the second winding pin 21.

In an embodiment, the second adjusting assembly 23 further includes a second elastic member, and the second elastic member abuts between the second connecting block 231 and the second winding pin 21 to provide a pre-tightening force for moving the second connecting block 231 in a direction away from the second winding pin 21. Therefore, the second connecting block 231 can be effectively prevented from being loosened from the second adjusting piece and the threaded connection between the second adjusting piece and the second winding needle 21 under the action of the pre-tightening force provided by the second elastic piece.

In an embodiment, the second adjusting assembly 23 further includes a second limiting member, and the second connecting block 231 has a second through hole. The second limiting member is disposed through the second through hole, and the second limiting member includes a second connecting end and a second limiting end, the second connecting end is connected to the second winding pin 21 (for example, threaded connection), and the second limiting end is located on a side of the second connecting block 231 away from the second winding pin 21, so as to limit the second connecting block 231 between the second winding pin 21 and the second limiting end, and prevent the second connecting block 231 from being separated from the second adjusting member or the second adjusting member from being separated from the second winding pin 21 in the process of rotating the second adjusting member. Alternatively, the second limiting member may be a limiting screw.

Specifically, in the embodiment, the second winding pin 21 is provided with a second sliding groove, and the second connecting block 231 is slidably fitted in the second sliding groove to guide the movement of the second connecting block 231 relative to the second winding pin 21, so that the movement of the second connecting block 231 is further stable and reliable. Optionally, one end of the second connection block 231 is slidably engaged with the second winding needle 21 through the second guide pillar and the second guide sleeve, and the opposite end of the second connection block 231 is slidably engaged with the second winding needle 21 through the second sliding slot, so that the second connection block 231 and the second outer profile 22 moving together with the second connection block 231 move more stably and reliably relative to the second winding needle 21.

Since the second adjusting member is screwed to both the second connecting block 231 and the second winding pin 21, the initial positions of the second connecting block 231 and the second winding pin 21 are difficult to be adjusted in position (i.e., the initial positions of the second connecting block 231 and the second winding pin 21 on the second adjusting member) during assembly. In one embodiment, the second adjusting assembly 23 further comprises a second fixing block, the second fixing block is mounted on the second winding pin 21, and the fourth threaded section of the second adjusting member is threadedly connected to the second fixing block, so that the second adjusting member is indirectly threadedly connected to the second winding pin 21 through the second fixing block. That is, the third threaded section of the second adjusting member is threadedly coupled to the second connecting block 231, the fourth threaded section of the second adjusting member is threadedly coupled to the second fixing block, and the second fixing block is mounted to the second winding pin 21. In this way, when assembling, first, the second connection block 231 and the second fixing block are threadedly connected to the third threaded section and the fourth threaded section of the second adjustment member, respectively. Then, the second adjusting member is rotated to align the initial position of the second connecting block 231 on the second adjusting member, and then the second fixing block is rotated to align the initial position of the second fixing block on the second adjusting member. Then, the second fixing block is mounted to the second winding pin 21.

Further, the second winding pin 21 is provided with a second mounting groove and a second threaded hole 211 penetrating through a sidewall of the second mounting groove. The second fixed block is at least partially positioned in the second mounting groove. The second adjustment assembly 23 also includes a second threaded fastener that is threadably coupled within the second threaded bore 211. One end of the second threaded fastener penetrates into the second mounting groove and abuts against the second fixing block, and therefore the second fixing block is fastened in the second mounting groove. So, only need screw up second threaded fastener when needs fastening second fixed block can, only need unscrew second threaded fastener when the second fixed block is lifted off to needs can for the assembly and the dismantlement of second fixed block are simple swift. It should be noted that the second threaded fasteners may be provided in plural (i.e., two or more), and the plural second threaded fasteners may be disposed on opposite sides of the second fixing block. Alternatively, the second threaded fastener may be a jackscrew, a screw, a threaded rod, or the like, which is not limited herein.

It should be noted that the second adjusting assemblies 23 are disposed at both lengthwise ends of the second outer contour 22, and the second adjusting assemblies 23 at both ends of the second outer contour 22 can be adjusted, so that the adjustment of the second outer contour 22 is more accurate. Of course, in other embodiments, one end of the second outer profile 22 is provided with the second adjusting member 23, and the opposite end is provided with a guide structure for guiding the second outer profile 22. Alternatively, the guiding structure may be a guide post and a guide sleeve. For example, the guide post is mounted to the second winding pin 21, the guide sleeve is mounted to the second profile 22, and the guide post and the guide sleeve are slidably engaged.

With continued reference to fig. 1, in an embodiment of the present invention, the needle winding device further includes a needle winding base 30, a first inner winding needle 14, and a second inner winding needle 24. The first inner winding needle 14 is located on one side of the first winding needle 11 facing the second winding needle 21, and the second inner winding needle 24 is located on one side of the second winding needle 21 facing the first winding needle 11, so as to form the above-mentioned clamping position for clamping the material tape between the first inner winding needle 14 and the second inner winding needle 24. A sliding block 31 is movably connected in the needle rolling seat 30, the first rolling needle 11 and the second inner rolling needle 24 are fixedly connected with the needle rolling seat 30, and the second rolling needle 21 and the first inner rolling needle 14 are fixedly connected with the sliding block 31. Thus, when the slide block 31 moves relative to the needle rolling seat 30 to drive the second rolling needle 21 to move away from the first rolling needle 11, the slide block 31 also drives the first inner rolling needle 14 to move close to the second inner rolling needle 24, so as to clamp the material belt between the first inner rolling needle 14 and the second inner rolling needle 24; when the slide block 31 moves relative to the winding needle holder 30 to drive the second winding needle 21 to approach the first winding needle 11 (at this time, the circumference of the winding surface is reduced), the slide block 31 also drives the first inner winding needle 14 to be away from the second inner winding needle 24, so that the material belt between the first inner winding needle 14 and the second inner winding needle 24 is loosened, so as to facilitate blanking of the battery cell wound on the winding surface. In one embodiment, the slider 31 is drivingly connected to the driving assembly such that the driving assembly drives the slider 31 to move relative to the needle holder 30. It should be noted that the driving assembly may adopt a mature prior art, and therefore, the detailed description thereof is omitted.

Fig. 7 to 10 show a needle winding device provided in a second embodiment of the present invention, the needle winding device in the second embodiment has the same structure as that in the first embodiment, and for the convenience of understanding, only the different points of the needle winding device in the second embodiment compared with the needle winding device in the first embodiment will be described below:

in the second embodiment, the first adjustment assembly 13 includes a first adjustment member 132, and the first adjustment member 132 has a first threaded section and a second threaded section along an axial direction thereof. The first thread segments are threadedly connected to the first outer contour member 12 and the second thread segments are threadedly connected to the first winding pin 11. Therefore, the first thread section of the first adjusting member 132 is directly in threaded connection with the first outer profile member 12, and components such as the first connecting block are omitted, which is beneficial to reducing the radial size of the first winding needle assembly 10 and is more suitable for the development trend of winding needle miniaturization.

Further, one of the first outer contour element 12 and the first winding needle 11 is provided with a first waist-shaped hole 112, and the first waist-shaped hole 112 extends lengthwise along the moving direction of the first outer contour element 12. The first adjustment assembly 13 also includes a first stop 15. The first stop member 15 is connected to the other one of the first outer profile member 12 and the first winding needle 11, and is disposed through the first kidney-shaped hole 112, so that when the first outer profile member 12 moves relative to the first winding needle 11, the first stop member 15 moves along the longitudinal extension direction of the first kidney-shaped hole 112, thereby limiting the first outer profile member 12, i.e. limiting the moving range of the first outer profile member 12 relative to the first winding needle 11. More specifically, the first waist-shaped hole 112 opens on the first winding needle 11, and the first stop member 15 is connected to the first outer profile member 12. Optionally, a third threaded hole is opened on the first outer contour element 12, one end of the first stop element 15 is connected to the third threaded hole in a threaded manner, and the other opposite end penetrates into the first kidney-shaped hole 112. The first stop member 15 may be a limit screw.

Further, the side of the first outer contour element 12 facing the first winding pin 11 has a first guide groove. The first winding needle 11 is accommodated in the first guide groove and is in sliding fit with the side wall of the first guide groove. In this way, on the one hand, guiding of the movement of the first outer contour element 12 relative to the first winding needle 11 is achieved; on the other hand, the first winding needle 11 is accommodated in the first guide groove, which is further beneficial to reducing the radial dimension of the first winding needle assembly 10 and is more suitable for the development trend of miniaturization of the winding needle.

It should be noted that, as a preferred embodiment, the first outer contour element 12 is provided with first stoppers 15 on both sides in a predetermined direction, wherein the predetermined direction is perpendicular to the moving direction of the first outer contour element 12 and the longitudinal direction of the first winding needle 11. One end of each first stop member 15 is connected with the first outer contour member 12 through a corresponding third threaded hole, and the other end thereof extends into the first guide groove, and further penetrates into the first waist-shaped hole 112 formed in the first winding needle 11. Therefore, the limit of the first outer contour part 12 is more accurate and reliable.

It should be noted that, in the present embodiment, the first elastic element 136 abuts between the first winding needle 11 and the first outer profile 12 to provide a pre-tightening force for moving the first profile 12 in a direction away from the first winding needle 11. In this way, the first outer profile element 12 and the first adjusting element 132, and the threaded connection between the first adjusting element 132 and the first winding needle 11 can be effectively prevented from loosening under the action of the pre-tightening force provided by the first elastic element 136.

It should also be noted that in the present embodiment, the second threaded section of the first adjusting member 132 can be indirectly threadedly connected to the first winding needle 11 through the first fixing block. That is, the second threaded section of the first adjusting member 132 is threadedly coupled to a first fixing block mounted to the first winding pin 11, so as to facilitate alignment of the first outer profile member 12 and the initial position of the first winding pin 11 on the first adjusting member 132 during assembly.

In this embodiment, the second adjustment assembly 23 further comprises a second adjustment member having a third threaded section and a fourth threaded section along an axial direction thereof. The third thread segments are threadedly connected to the second profile member 22 and the fourth thread segments are threadedly connected to the second winding pin 21. Therefore, the third thread section of the second adjusting piece is directly in threaded connection with the second outer contour piece 22, so that parts such as a second connecting block are omitted, the radial size of the second winding needle assembly 20 is reduced, and the development trend of winding needle miniaturization is adapted to.

Further, one of the second outer contour 22 and the second winding needle 21 is provided with a second waist-shaped hole, and the second waist-shaped hole lengthily extends along the moving direction of the second outer contour 22. The second adjustment assembly 23 also includes a second stop 25. The second stopping member 25 is connected to the other one of the second outer contour 22 and the second winding needle 21 and is inserted into the second slotted hole, so that when the second outer contour 22 moves relative to the second winding needle 21, the second stopping member 25 moves along the longitudinal extension direction of the second slotted hole, thereby limiting the second outer contour 22, i.e. limiting the moving range of the second outer contour 22 relative to the second winding needle 21. More specifically, a second slotted hole opens onto the second winding needle 21, and a second stop 25 is connected to the second outer profile 22. Optionally, a fourth threaded hole is formed in the second outer contour 22, one end of the second stopper 25 is screwed into the fourth threaded hole, and the other opposite end penetrates into the second kidney-shaped hole. It should be noted that the second stop 25 may be a limit screw.

Further, the side of the second outer profile 22 facing the second winding needle 21 has a second guide groove. The second winding needle 21 is accommodated in the second guide groove and is in sliding fit with the side wall of the second guide groove. In this way, on the one hand, a guiding of the movement of the second outer contour 22 relative to the second winding needle 21 is achieved; on the other hand, the second winding needle 21 is accommodated in the second guide groove, which is beneficial to further reducing the radial dimension of the second winding needle assembly 20 and is more suitable for the development trend of miniaturization of the winding needle.

It should be noted that, as a preferred embodiment, the second outer profile 22 is provided with the second stoppers 25 on both sides in a predetermined direction, wherein the predetermined direction is perpendicular to the moving direction of the second outer profile 22 and the longitudinal direction of the second winding needle 21. One end of each second stop member 25 is in threaded connection with the second outer profile member 22 through a corresponding fourth threaded hole, and the other opposite end extends into the second guide groove, so as to penetrate into a second waist-shaped hole formed in the second winding needle 21. In this way, the limitation of the second profile-element 22 is more accurate and reliable.

It should be noted that, in this embodiment, the second elastic member abuts between the second winding pin 21 and the second outer contour 22 to provide a pre-tightening force for moving the second contour 22 in a direction away from the second winding pin 21. Therefore, the threaded connection between the second outer profile part 22 and the second adjusting part and the threaded connection between the second adjusting part and the second winding needle 21 can be effectively prevented from loosening under the action of the pre-tightening force provided by the second elastic part.

It should also be noted that in this embodiment, the second threaded section of the second adjusting member may be indirectly threadedly connected to the second winding pin 21 through the second fixing block. That is, the second threaded section of the second adjusting member is threadedly coupled to a second fixing block mounted to the second winding pin 21, thereby facilitating alignment of the second outer profile member 22 and the initial position of the second winding pin 21 on the second adjusting member during assembly.

Referring to fig. 7 to 10, specifically, the needle winding device further includes a first needle winding seat 32 and a second needle winding seat 33. One end of the first winding needle 11 is arranged on the first winding needle seat 32, one end of the second winding needle 21 is arranged on the second winding needle seat 33, and the first winding needle 11 can rotate relative to the first winding needle seat 32 and/or the second winding needle 21 can rotate relative to the second winding needle seat 33. During the rotation of the first winding needle 11 relative to the first winding needle seat 32 and/or the second winding needle 21 relative to the second winding needle seat 33, the end of the first winding needle 11 far away from the first winding needle seat 32 and the end of the second winding needle 21 far away from the second winding needle seat 33 are close to or far away from each other, so as to clamp or release the material belt. In this way, when the end of the first winding needle 11 far away from the first winding needle seat 32 and the end of the second winding needle 21 far away from the second winding needle seat 33 are close to each other, the material belt between the first winding needle 11 and the second winding needle 21 can be clamped, so as to facilitate the winding operation of the material belt; the material belt between the first winding needle 11 and the second winding needle 21 can be loosened when the end of the first winding needle 11 far away from the first winding needle seat 32 and the end of the second winding needle 21 far away from the second winding needle seat 33 are far away from each other. In addition, the first winding needle 11 and the second winding needle 21 clamp the material belt in a rotating mode, so that the structures of the first winding needle seat 32 and the second winding needle seat 33 are simplified, the volume of the winding needle seat 30 is reduced, the volume of the winding needle device is further reduced, and the space occupied by the winding needle device is reduced.

More specifically, the second winding needle 21 is fixedly connected to the second winding needle holder 33, and the first winding needle 11 is rotatably connected to the first winding needle holder 32. The needle winding device further includes a fourth elastic member, and opposite ends of the fourth elastic member respectively abut against the first needle winding seat 32 and the first needle winding 11, so as to provide a pre-tightening force for driving one end of the first needle winding 11 away from the first needle winding seat 32 to rotate towards a direction close to one end of the second needle winding 21 away from the second needle winding seat 33. Alternatively, the fourth elastic member may be a spring. Alternatively, the first winding needle 11 is fixedly connected to the swing seat 34, and the swing seat 34 is rotatably connected to the first winding needle seat 32 through the swing shaft 35, so that the first winding needle 11 is rotatably connected to the first winding needle seat 32. Of course, it should be noted that in other embodiments, the first winding needle 11 may be fixedly connected to the first winding needle holder 32, and the second winding needle 21 may be rotatably connected to the second winding needle holder 33. The structure of the first roll needle holder 32 and the second roll needle holder 33 is a mature prior art, and therefore, the detailed description thereof is omitted.

Based on above-mentioned book needle device, the utility model discloses still provide a coiling equipment, include in above-mentioned arbitrary embodiment the book needle device, this book needle device is used for the centre gripping material area to carry out the coiling operation to the material area. Specifically, the winding device further comprises a driving device, and the driving device is used for driving the winding needle device to rotate so that the winding needle device performs winding operation on the material belt.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A needle winding device, comprising:

2. The needle winding device of claim 1, wherein the first adjustment assembly comprises a first adjustment member having a first threaded section and a second threaded section along an axial direction thereof, the first threaded section being threadedly coupled to the first outer profile member, the second threaded section being threadedly coupled to the first winding needle.

3. The needle winding device of claim 2, wherein the first adjusting assembly further comprises a first connecting block movably connected to the first winding needle in a radial direction of the first winding needle and connected to the first outer profile member;

4. The needle winding device according to claim 3, wherein the first adjusting assembly further comprises a first limiting member, and the first connecting block is provided with a first through hole;

5. The needle winding device according to claim 2, wherein one of the first outer profile member and the first winding needle is provided with a first waist-shaped hole, and the first waist-shaped hole extends lengthwise along the moving direction of the first outer profile member;

6. The needle winding device of claim 2, wherein a side of the first outer profile member facing the first winding needle has a first guide groove, and the first winding needle is received in the first guide groove and slidably engaged with a side wall of the first guide groove.

7. The needle winding device according to claim 2, wherein the first thread section and the second thread section have the same rotation direction and different thread pitches; or

8. The needle winding device of claim 2, wherein said first adjustment assembly further comprises a first fixed block, said first fixed block is mounted to said first winding needle, and said second threaded section of said first adjustment member is threadedly coupled to said first fixed block.

9. The needle winding device according to claim 8, wherein the first winding needle is provided with a first mounting groove and a first threaded hole penetrating through a side wall of the first mounting groove, and the first fixing block is at least partially positioned in the first mounting groove;

10. The needle winding device of any one of claims 1 to 9, wherein the second needle winding assembly further comprises a second outer profile and a second adjustment assembly;

11. The needle winding device of claim 10, wherein the second adjustment assembly further comprises a second adjustment member having a third thread section and a fourth thread section along an axial direction thereof, the third thread section being threadedly connected to the second outer profile member, the fourth thread section being threadedly connected to the second winding needle.

12. The needle winding device of claim 11, wherein the second adjustment assembly further comprises a second connecting block movably connected to the second winding needle in a radial direction of the second winding needle and connected to the second outer profile;

13. The needle winding device according to claim 12, wherein the second adjusting assembly further comprises a second limiting member, and the second connecting block is provided with a second through hole;

14. The needle winding device of claim 11, wherein one of the second outer profile and the second winding needle defines a second waist-shaped aperture, the second waist-shaped aperture extending lengthwise along the direction of movement of the second outer profile;

15. The needle winding device of claim 11, wherein a side of the second outer profile facing the second winding needle has a second guide slot, and the second winding needle is received in the second guide slot and slidably engaged with a side wall of the second guide slot.

16. The needle winding device of claim 11, wherein the third thread section and the fourth thread section are opposite in rotation direction and different in thread pitch; or

17. The needle winding device of claim 11, wherein said second adjustment assembly further comprises a second fixed block, said second fixed block being mounted to said second winding needle, said third threaded section of said second adjustment member being threadably connected to said second fixed block.

18. The needle winding device according to claim 17, wherein the second winding needle defines a second mounting groove and a second threaded hole extending through a sidewall of the second mounting groove, and the second fixing block is at least partially disposed in the second mounting groove;

19. A winding apparatus comprising the needle winding device according to any one of claims 1 to 18.