Winding needle device and winding equipment

文档序号：1907192 发布日期：2021-11-30 浏览：8次中文

阅读说明：本技术 卷针装置及卷绕设备 (Winding needle device and winding equipment ) 是由不公告发明人于 2021-06-24 设计创作，主要内容包括：本发明涉及一种卷针装置及卷绕设备。该卷针装置包括：旋转机构,可受控地绕第一旋转轴线转动；卷针机构,包括卷针座以及相对设置于卷针座上的第一卷针和第二卷针,卷针座连接于所述旋转机构,第一卷针朝向靠近或远离第二卷针的方向相对卷针座可移动；卷针机构还包括沿与第一旋转轴线平行的第一方向可移动地连接于卷针座的第一驱使件,以及连接于第一卷针的第一驱使配合件,第一驱使配合件与第一驱使件配合,并响应于第一驱使件沿第一方向的移动而带动第一卷针靠近或远离第二卷针；及调节机构,设置于旋转机构,并与第一驱使件传动连接,调节机构受控驱动第一驱使件沿第一方向移动。(The invention relates to a needle winding device and winding equipment. This book needle device includes: a rotation mechanism controllably rotatable about a first axis of rotation; the needle rolling mechanism comprises a needle rolling seat, a first rolling needle and a second rolling needle, wherein the first rolling needle and the second rolling needle are arranged on the needle rolling seat relatively, the needle rolling seat is connected to the rotating mechanism, and the first rolling needle can move relative to the needle rolling seat in a direction close to or far away from the second rolling needle; the needle winding mechanism further comprises a first driving piece movably connected to the needle winding seat along a first direction parallel to the first rotation axis, and a first driving matching piece connected to the first winding needle, wherein the first driving matching piece is matched with the first driving piece and drives the first winding needle to be close to or far away from the second winding needle in response to the first driving piece moving along the first direction; and the adjusting mechanism is arranged on the rotating mechanism and is in transmission connection with the first driving piece, and the adjusting mechanism is controlled to drive the first driving piece to move along the first direction.)

1. A needle winding device, comprising:

a rotation mechanism controllably rotatable about a first axis of rotation;

the needle rolling mechanism comprises a needle rolling seat, a first rolling needle and a second rolling needle, wherein the first rolling needle and the second rolling needle are arranged on the needle rolling seat relatively, the needle rolling seat is connected to the rotating mechanism, and the first rolling needle can move relative to the needle rolling seat in a direction close to or far away from the second rolling needle;

the needle winding mechanism further comprises a first actuating piece movably connected to the needle winding seat along a first direction parallel to the first rotation axis, and a first actuating matching piece connected to the first winding needle, wherein the first actuating matching piece is matched with the first actuating piece and drives the first winding needle to be close to or far away from the second winding needle in response to the first actuating piece moving along the first direction; and

and the adjusting mechanism is arranged on the rotating mechanism and is in transmission connection with the first driving piece, and the adjusting mechanism is controlled to drive the first driving piece to move along the first direction.

2. The needle winding device according to claim 1, wherein the adjusting mechanism comprises an adjusting member, an adjusting mating member and a moving member, the adjusting member is coupled to the rotating mechanism and controlled to rotate or stop rotating synchronously with the rotating mechanism, the adjusting mating member is mounted to the rotating mechanism and is in transmission connection with the adjusting member, the moving member is movably connected to the rotating mechanism along the first direction and is in transmission connection with the adjusting mating member, and the first actuating member is connected to the moving member;

when the adjusting piece stops rotating along with the rotating mechanism, the adjusting matching piece rotates along with the rotating mechanism to generate first relative rotation around the first rotating axis with the adjusting piece, and the moving piece moves along the first direction in response to the first relative rotation.

3. The needle winding device according to claim 2, wherein the adjusting member is an adjusting shaft, the axis of the adjusting shaft is collinear with the first rotation axis, the adjusting fitting member is an adjusting fitting shaft, the adjusting fitting shaft is rotatably connected to the rotating mechanism around a second rotation axis parallel to the first rotation axis, and the adjusting shaft is in transmission connection with the adjusting fitting shaft;

the adjusting mechanism further comprises a threaded sleeve, and the threaded sleeve is in threaded connection with the adjusting matching shaft and is connected with the moving piece.

4. The needle winding device according to claim 3, wherein the adjusting mechanism further comprises a driving gear and a driven gear, the driving gear is mounted on the adjusting shaft, and the driven gear is mounted on the adjusting fitting shaft and engaged with the driving gear.

5. The needle winding device according to claim 3, wherein one end of the adjusting shaft is rotatably connected with the rotating mechanism around the first rotating axis, and the other end of the adjusting shaft penetrates out of the rotating mechanism and is provided with a rotation stopping section;

the needle winding device further comprises a control mechanism, the control mechanism is provided with a control end, and the control end can be controlled to move to the rotation stopping section of the adjusting shaft and is connected with the rotation stopping section in a matching mode.

6. The needle winding device of claim 5, further comprising a rotation stopping mechanism connected to the rotating mechanism and having a rotation stopping end, wherein the rotation stopping end of the rotation stopping mechanism is coupled to the rotation stopping section;

when the control end of the control mechanism is controlled to move to the rotation stopping section, the control end is matched and connected with the rotation stopping section and pushes the rotation stopping end away from the rotation stopping section.

7. The needle winding device according to claim 6, wherein the rotation stopping mechanism comprises an end cap, a rotation stopping block and a first plunger, the end cap is mounted on the rotating mechanism, the rotation stopping block is disposed on the end cap and serves as the rotation stopping end, the rotation stopping block has a through hole, the first plunger is disposed on the rotation stopping block and at least partially extends into the through hole along a radial direction of the through hole, the adjusting shaft is rotatably connected to the end cap, and the rotation stopping section of the adjusting shaft is inserted into the through hole;

the rotation stopping section of the adjusting shaft is provided with a rotation stopping groove, and the part of the first plunger, which is positioned in the through hole, extends into the rotation stopping groove.

8. The needle winding device according to claim 2, wherein the rotating mechanism comprises a rotating sleeve, a first sliding sleeve, a second sliding sleeve and a rotating frame, the rotating sleeve can be controlled to rotate around the first rotating axis, the first sliding sleeve and the rotating sleeve are synchronously and rotationally sleeved in the rotating sleeve and are controlled to move along the first direction relative to the rotating sleeve, the second sliding sleeve and the first sliding sleeve are synchronously and rotationally sleeved in the first sliding sleeve and are controlled to move along the first direction relative to the first sliding sleeve, and the rotating frame is positioned in the second sliding sleeve and is connected with the first sliding sleeve;

the needle rolling seat comprises a first needle rolling seat and a second needle rolling seat, the first needle rolling seat is connected with the rotating frame, the second needle rolling seat is connected with the second sliding sleeve, the first needle rolling seat and the second needle rolling seat are respectively arranged on the side surfaces of the first needle rolling seat and the second needle rolling seat which are deviated from each other, the first needle rolling seat can move relative to the first needle rolling seat in the direction close to or far from the second needle rolling seat, and the first actuating piece is movably connected to the first needle rolling seat in the first direction;

the adjusting part is arranged in the second sliding sleeve and is controlled to synchronously rotate or stop rotating along with the rotating frame, the adjusting matching part is arranged on the rotating frame, and the moving part is movably connected to the rotating frame along the first direction.

9. The needle winding device according to claim 8, wherein at least one of the first actuating member and the first actuating fitting has a first inclined surface slidably fitted with the other of the first actuating member and the first inclined surface, the first inclined surface is disposed obliquely with respect to the first rotation axis, and when the first actuating member moves in the first direction with respect to the first actuating fitting, the first actuating fitting is pushed to move the first winding needle away from the second winding needle.

10. The needle winding device according to claim 9, wherein the needle winding mechanism further comprises a first limiting member and a first elastic member, the first limiting member comprises a first rod part and a first head part connected to one end of the first rod part, the first rod part is inserted into the first winding needle and connected to the first winding needle seat, and the first head part is located on a side of the first winding needle away from the second winding needle;

two opposite ends of the first elastic piece are respectively abutted to the first head part and the first winding needle and used for providing pre-tightening force for enabling the first winding needle to move close to the second winding needle along the first rod part.

11. The needle winding device of claim 8, wherein the second winding needle is movably connected to the second winding needle seat toward a direction approaching or departing from the first winding needle;

the needle rolling mechanism further comprises a second driving piece movably connected to the second needle rolling seat along the first direction and a second driving matching piece connected to the second needle rolling seat, the second driving piece can move along the first direction along with the moving piece, the second driving matching piece is matched with the second driving piece, and the second driving matching piece drives the second needle rolling seat to move towards or away from the first needle rolling seat in response to the second driving piece moving along the first direction.

12. The needle winding device of claim 11, wherein at least one of the second actuating member and the second actuating fitting member has a second inclined surface slidably engaged with the other of the second inclined surface and the second inclined surface is inclined with respect to the first rotation axis, and when the second actuating member moves along the first rotation axis relative to the second actuating fitting member, the second actuating fitting member is pushed to drive the second winding needle away from the first winding needle.

13. The needle winding device according to claim 12, wherein the needle winding mechanism further comprises a second limiting member and a second elastic member, the second limiting member comprises a second rod and a second head connected to one end of the second rod, the second rod is inserted into the second winding needle and connected to the second winding needle holder, and the second head is located on a side of the second winding needle away from the first winding needle;

two opposite ends of the second elastic piece are respectively abutted to the second head part and the second winding needle and used for providing pre-tightening force for enabling the second winding needle to move close to the first winding needle along the second rod part.

14. The needle winding device of claim 8, wherein the rotating mechanism further comprises a swing assembly, the swing assembly comprising a mounting seat, a swing member and a third elastic member;

the mounting seat is connected to the second sliding sleeve, one end of the swinging piece is rotatably connected to the mounting seat around a third rotating axis intersecting with the first rotating axis, and the other end of the swinging piece is connected with the second needle winding seat; the third elastic piece is abutted between the swinging piece and the mounting seat and used for providing pretightening force for enabling the swinging piece to drive the second winding needle to swing around the third rotation axis towards the direction close to the first winding needle.

15. A winding apparatus comprising the needle winding device according to any one of claims 1 to 14.

Technical Field

The invention relates to the technical field of battery manufacturing equipment, in particular to a winding needle device and winding 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. In the actual production process, the circumference of the winding needle is frequently required to be frequently adjusted (i.e. the circumference is adjusted by adjusting the radial size of the winding needle) so as to ensure the alignment degree of the lugs of the produced battery core. However, in the prior art, the circumference of the winding needle is usually adjusted by sticking a teflon sheet on the winding needle, so that the operation time is long and the production efficiency is reduced.

Disclosure of Invention

Therefore, it is necessary to provide a winding needle device and a winding apparatus that improve the above-mentioned drawbacks, in order to solve the problems of long operation time and low production efficiency in the prior art that the circumference of the winding needle is adjusted by attaching a teflon sheet to the winding needle.

A needle winding device comprising:

a rotation mechanism controllably rotatable about a first axis of rotation;

In one embodiment, the adjusting mechanism comprises an adjusting part, an adjusting mating part and a moving part, the adjusting part is coupled with the rotating mechanism and controlled to synchronously rotate or stop rotating along with the rotating mechanism, the adjusting mating part is mounted on the rotating mechanism and is in transmission connection with the adjusting part, the moving part is movably connected to the rotating mechanism along the first direction and is in transmission connection with the adjusting mating part, and the first actuating part is connected with the moving part;

In one embodiment, the adjusting member is an adjusting shaft, the axis of the adjusting shaft is collinear with the first rotation axis, the adjusting fitting member is an adjusting fitting shaft, the adjusting fitting shaft is rotatably connected to the rotating mechanism around a second rotation axis parallel to the first rotation axis, and the adjusting shaft is in transmission connection with the adjusting fitting shaft;

the adjusting mechanism further comprises a threaded sleeve, and the threaded sleeve is in threaded connection with the adjusting matching shaft and is connected with the moving piece.

In one embodiment, the adjusting mechanism further comprises a driving gear and a driven gear, the driving gear is mounted on the adjusting shaft, and the driven gear is mounted on the adjusting matching shaft and meshed with the driving gear.

In one embodiment, one end of the adjusting shaft is rotatably connected with the rotating mechanism around the first rotating axis, and the other end of the adjusting shaft penetrates out of the rotating mechanism and is provided with a rotation stopping section;

In one embodiment, the needle winding device further comprises a rotation stopping mechanism, the rotation stopping mechanism is connected to the rotating mechanism and is provided with a rotation stopping end, and the rotation stopping end of the rotation stopping mechanism is matched and connected with the rotation stopping section;

In one embodiment, the rotation stopping mechanism comprises an end cover, a rotation stopping block and a first plunger, the end cover is mounted on the rotating mechanism, the rotation stopping block is arranged on the end cover and serves as the rotation stopping end, the rotation stopping block is provided with a through hole, the first plunger is arranged on the rotation stopping block and at least partially extends into the through hole along the radial direction of the through hole, the adjusting shaft is rotatably connected to the end cover, and the rotation stopping section of the adjusting shaft penetrates through the through hole;

In one embodiment, the rotating mechanism includes a rotating sleeve, a first sliding sleeve, a second sliding sleeve and a rotating frame, the rotating sleeve can be controlled to rotate around the first rotating axis, the first sliding sleeve and the rotating sleeve are synchronously and rotationally sleeved in the rotating sleeve and are controlled to move along the first direction relative to the rotating sleeve, the second sliding sleeve and the first sliding sleeve are synchronously and rotationally sleeved in the first sliding sleeve and are controlled to move along the first direction relative to the first sliding sleeve, and the rotating frame is located in the second sliding sleeve and is connected with the first sliding sleeve;

In one embodiment, at least one of the first actuating member and the first actuating mating member has a first inclined surface slidably mating with the other of the first inclined surface and the first inclined surface is disposed obliquely with respect to the first rotation axis, and when the first actuating member moves in the first direction with respect to the first actuating mating member, the first actuating mating member is actuated to drive the first winding needle to move in a direction away from the second winding needle.

In one embodiment, the needle winding mechanism further includes a first limiting member and a first elastic member, the first limiting member includes a first rod portion and a first head portion connected to one end of the first rod portion, the first rod portion is inserted through the first winding needle and connected to the first needle winding base, and the first head portion is located on a side of the first winding needle away from the second winding needle;

In one embodiment, the second winding needle is movably connected to the second winding needle seat towards the direction close to or far away from the first winding needle;

the needle rolling mechanism further comprises a second driving piece movably connected to the second needle rolling seat along the first direction and a second driving fitting piece connected to the second needle rolling seat, the second driving piece can move along the first direction along the moving piece, the second driving fitting piece is matched with the second driving piece, and the second driving fitting piece drives the second needle rolling seat to move towards or away from the first needle rolling seat in response to the second driving piece moving along the first direction.

In one embodiment, at least one of the second actuating member and the second actuating fitting member has a second inclined surface slidably fitted with the other of the second inclined surface and the second inclined surface is disposed obliquely with respect to the first rotation axis, and when the second actuating member moves along the first rotation axis with respect to the second actuating fitting member, the second actuating fitting member is pushed to drive the second winding needle away from the first winding needle.

In one embodiment, the needle winding mechanism further includes a second limiting member and a second elastic member, the second limiting member includes a second rod portion and a second head portion connected to one end of the second rod portion, the second rod portion is inserted through the second winding needle and connected to the second winding needle holder, and the second head portion is located on a side of the second winding needle away from the first winding needle;

In one embodiment, the rotating mechanism further comprises a swinging assembly, the swinging assembly comprises a mounting seat, a swinging piece and a third elastic piece, the mounting seat is connected to the second sliding sleeve, one end of the swinging piece is rotatably connected to the mounting seat around a third rotating axis intersecting with the first rotating axis, and the other end of the swinging piece is connected with the second needle winding seat; the third elastic piece is abutted between the swinging piece and the mounting seat and used for providing pretightening force for enabling the swinging piece to drive the second winding needle to swing around the third rotation axis towards the direction close to the first winding needle.

A winding apparatus comprising a needle winding device as claimed in any one of the above claims.

According to the winding needle device and the winding equipment, the outer contour formed by splicing the first winding needle and the second winding needle which are oppositely arranged is used for winding the material belt, and then the battery cell is formed. That is, the circumference of the outer contour formed by splicing the first winding needle and the second winding needle is the circumference of the winding needle. The rotating mechanism drives the needle rolling seat to rotate around the first rotating axis, so that the first needle rolling and the second needle rolling rotate around the first rotating axis along with the needle rolling seat, and the material belt is wound on an outer contour formed by splicing the first needle rolling and the second needle rolling. When the circumference of the winding needle needs to be adjusted, the adjusting mechanism drives the first driving piece to move along the first direction, so that the first driving fitting piece responds to the first driving piece to move along the first direction to drive the first winding needle to be close to or far away from the second winding needle, and the purpose of reducing or increasing the circumference of the winding needle is achieved.

Therefore, the adjusting mechanism is used for driving the first driving piece to move along the first direction in the needle rolling device to adjust the circumference of the rolling needle, and compared with a mode of sticking a Teflon sheet in the prior art, the method has the advantages that the circumference adjusting process of the rolling needle is simple and rapid, the adjusting precision is high, and the production efficiency is favorably improved.

Drawings

FIG. 1 is a schematic structural diagram of a needle winding device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the needle winding assembly taken along the line A-A in the embodiment of FIG. 1;

FIG. 3 is a cross-sectional view of the needle winding mechanism of the needle winding device shown in FIG. 2;

FIG. 4 is a cross-sectional view of the rotating mechanism and the adjusting mechanism of the needle winding device shown in FIG. 2;

FIG. 5 is a schematic view of an adjusting mechanism and a transmission structure of the needle winding mechanism of the needle winding device shown in FIG. 2;

fig. 6 is a schematic structural diagram of a rotation stop mechanism and a control mechanism of the needle winding device in an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the 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," "secured," and the like are to be construed broadly and can, 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. 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, fig. 2 and fig. 3, an embodiment of the present invention provides a needle winding device, which includes a rotating mechanism 10, a needle winding mechanism 20 and an adjusting mechanism 30.

The rotary mechanism 10 is controllably rotatable about a first axis of rotation. The needle winding mechanism 20 includes a needle winding base, and a first winding needle 22a and a second winding needle 22b oppositely disposed on the needle winding base. The needle winding base is connected to the rotating mechanism 10 to rotate around the first rotation axis together with the rotating mechanism 10. The first winding needle 22a is movable relative to the winding needle holder toward and away from the second winding needle 22 b. The needle winding mechanism 20 further includes a first actuating member 23a and a first actuating mating member 24a, the first actuating member 23a is movably connected to the needle winding base along a first direction parallel to the first rotation axis, the first actuating mating member 24a is connected to the first winding needle 22a and is mated with the first actuating member 23a, such that the first actuating mating member 24a drives the first winding needle 22a to approach or move away from the second winding needle 22b in response to the first actuating member 23a moving along the first direction. The adjusting mechanism 30 is disposed on the rotating mechanism 10 and is in transmission connection with the first driving member 23a, and the adjusting mechanism 30 is controlled to drive the first driving member 23a to move along the first direction.

In the winding needle device, the outer contour formed by splicing the first winding needle 22a and the second winding needle 22b which are arranged oppositely is used for winding the material belt, so that the battery cell is formed. That is, the circumference of the outer contour formed by the first winding needle 22a and the second winding needle 22b is the circumference of the winding needle. The rotating mechanism 10 drives the needle winding seat to rotate around the first rotating axis, so that the first needle winding 22a and the second needle winding 22b rotate around the first rotating axis along with the needle winding seat, and the material belt is wound on the outer contour formed by splicing the first needle winding 22a and the second needle winding 22 b. When the circumference of the winding needle needs to be adjusted, the adjusting mechanism 30 drives the first actuating member 23a to move along the first direction, so that the first actuating mating member 24a drives the first winding needle 22a to move closer to or away from the second winding needle 22b in response to the first actuating member 23a moving along the first direction, thereby achieving the purpose of reducing or increasing the circumference of the winding needle. In the embodiment shown in fig. 3, the first direction is an up-down direction.

Therefore, in the needle winding device, the adjusting mechanism 30 is used for driving the first driving piece 23a to move along the first direction to adjust the circumference of the winding needle, and compared with a mode of sticking a teflon sheet in the prior art, the circumference adjusting process of the winding needle is simple and rapid, the adjusting precision is high, and the production efficiency is favorably improved.

In the embodiment of the present invention, the adjusting mechanism 30 includes an adjusting member 31, an adjusting fitting member 32 and a moving member 34. The adjustment member 31 is coupled to the rotation mechanism 10 and is controlled to rotate synchronously with the rotation mechanism 10 or stop rotating. The adjustment fitting 32 is mounted to the rotary mechanism 10 so as to rotate synchronously with the rotary mechanism 10, and the adjustment fitting 32 is in driving connection with the adjustment member 31. The moving member 34 is movably connected to the rotating mechanism 10 in a first direction and is drivingly connected to the adjustment mating member 32. The first actuating member 23a is connected with the moving member 34, so that the first actuating member 23a and the moving member 34 move together along the first direction.

When the adjusting element 31 stops rotating with the rotating mechanism 10, the adjusting mating element 32 rotates with the rotating mechanism 10 to generate a first relative rotation with the adjusting element 31 around the first rotation axis, the moving element 34 moves in the first direction in response to the first relative rotation, and then drives the first actuating element 23a to move in the first direction, and the first actuating mating element 24a drives the first winding needle 22a to move closer to or away from the second winding needle 22b in response to the first actuating element 23a moving in the first direction, so as to achieve the purpose of adjusting the circumference of the winding needle. That is, the rotating mechanism 10 generates the above-mentioned first relative rotation between the adjusting element 31 and the adjusting mating element 32, that is, the rotating motion of the rotating mechanism 10 is transmitted to the adjusting mating element 32, the adjusting mating element 32 converts the rotating motion into the linear motion of the moving element 34 moving along the first direction, and then the linear motion along the first direction is converted into the linear motion of the first winding needle 22a approaching to or departing from the second winding needle 22b through the first actuating element 23a and the first actuating mating element 24a, so as to finally achieve the purpose of adjusting the circumference of the winding needle.

It should be noted that the power for adjusting the circumference of the winding needle is derived from the winding power of the rotating mechanism 10, so that an additional power mechanism is not required, the structure is simplified, and the space occupied by the device is saved.

It should be further noted that, because the adjusting mechanism 30 is disposed on the rotating mechanism 10, the circumference of the winding needle can be adjusted in the process that the rotating mechanism 10 drives the first winding needle 22a and the second winding needle 22b to rotate around the first rotation axis, the main time sequence of the winding operation does not need to be occupied, the effect of the winding operation is not affected, and the production efficiency is further improved.

In some embodiments, the adjustment member 31 is an adjustment shaft 311, the axis of the adjustment shaft 311 is collinear with the first axis of rotation, and the driving gear 312 is mounted on the adjustment shaft 311. The adjustment fitting 32 is an adjustment fitting shaft 321, and the adjustment fitting shaft 321 is rotatably connected to the rotating mechanism 10 about a second rotation axis parallel to the first rotation axis. The adjusting shaft 311 is in transmission connection with the adjusting fitting shaft 321, so that when the adjusting fitting shaft 321 rotates around the first rotation axis (i.e. generates the first relative rotation) relative to the adjusting shaft 311, the adjusting fitting shaft 321 is driven to rotate around its own axis (i.e. rotates around the second axis). The adjusting mechanism 30 further includes a threaded sleeve 33, and the threaded sleeve 33 is threadedly coupled to the adjusting engagement shaft 321 and coupled to the moving member 34 such that the threaded sleeve 33 moves together with the moving member 34 in the first direction.

In one embodiment, the adjustment mechanism 30 further includes a driving gear 312 and a driven gear 322. The driving gear 312 is mounted on the adjusting shaft 311, and the driven gear 322 is mounted on the adjusting fitting shaft 321 and engaged with the driving gear 312, so that the driving gear 312 is engaged with the driven gear 322 to realize the transmission connection between the adjusting shaft 311 and the adjusting fitting shaft 321.

In this way, when the circumference of the winding needle needs to be adjusted, the adjusting shaft 311 stops rotating along with the rotating mechanism 10, so that the adjusting matching shaft 321 revolves around the adjusting shaft 311, and at this time, the driving gear 312 and the driven gear 322 are engaged with each other, so that the adjusting matching shaft 321 rotates around the second rotation axis. Due to the threaded connection between the threaded sleeve 33 and the adjusting and matching shaft 321, when the adjusting and matching shaft 321 rotates around the second rotation axis, the threaded sleeve 33 and the moving member 34 connected to the threaded sleeve 33 can be driven to move along the axial direction (i.e. the first direction) of the adjusting and matching shaft 321, that is, the rotation motion of the rotating mechanism 10 is converted into the rotation motion of the adjusting and matching shaft 321 around the second rotation axis, and further converted into the linear motion of the moving member 34 along the first direction.

When the circumference of the winding needle is adjusted to the right position, the adjusting shaft 311 rotates synchronously with the rotating mechanism 10, so that the adjusting shaft 311 and the adjusting matching shaft 321 do not generate the first relative rotation, and the first winding needle 22a stops moving relative to the second winding needle 22b, i.e. stops adjusting the circumference of the winding needle. At this time, the rotating mechanism 10 drives the needle winding base to rotate around the first rotation axis, and further drives the first winding needle 22a and the second winding needle 22b to rotate around the first rotation axis, so as to perform the winding operation.

It should be noted that, of course, the circumference of the winding needle can be adjusted when the rotating mechanism 10 does not rotate around the first rotation axis, at this time, only the adjusting shaft 311 needs to be connected to the external driving mechanism, the external driving mechanism is used to drive the adjusting shaft 311 to rotate around its own axis (i.e., the first rotation axis), so that the adjusting fitting member 321 is driven to rotate around its own axis (i.e., the second rotation axis) by the driving gear and the driven gear, the moving member 34 is driven to move along the first direction by the threaded sleeve 33, and finally the first driving member 23a and the first driving fitting member 24a drive the first winding needle 22a to approach or separate from the second winding needle 22b, so that the circumference of the winding needle can also be adjusted.

It should also be noted that, in order to avoid the engagement between the driving gear 312 and the driven gear 322 from interfering with the performance of the withdrawing needle and inserting needle actions described below, in one embodiment, the driven gear 322 is movably connected to the adjustment fitting shaft 321 along the axial direction (i.e., the first direction) of the adjustment fitting shaft 321. That is, the driven gear 322 is axially movable with respect to the adjustment fitting shaft 321 by a predetermined distance, so that the driven gear 322 does not axially move along with the adjustment fitting shaft 321 when the needle withdrawing and inserting operation described below is performed, and the driven gear 322 and the driving gear 312 are always engaged with each other.

More specifically, the driven gear 322 and the adjustment fitting shaft 321 may be keyed such that the driven gear 322 and the adjustment fitting shaft 321, and the driven gear 322 and the adjustment fitting shaft 321 can relatively move in the first direction by a certain distance.

Referring to fig. 6, in an embodiment, one end of the adjusting shaft 311 is rotatably connected to the rotating mechanism 10 around the first rotation axis, and the other end of the adjusting shaft 311 penetrates through the rotating mechanism 10 and has a rotation stopping section 314. The needle winding device further comprises a control mechanism 50, wherein the control mechanism 50 is provided with a control end, the control end can be controlled to move to the rotation stopping section 314 of the adjusting shaft 311, and is matched and connected with the rotation stopping section 314.

Thus, when the control end of the control mechanism 50 does not move to the rotation stop section 314 of the adjusting shaft 311, the adjusting shaft 311 rotates together with the rotation stop mechanism 40 around the first rotation axis, and at this time, the adjusting shaft 311 and the adjusting matching shaft 321 do not generate the first relative rotation, and the circumference of the winding needle is not adjusted.

When the control end of the control mechanism 50 moves to the rotation stopping section 314 of the adjusting shaft 311 and is coupled with the rotation stopping section 314, the control end of the control mechanism 50 stops the rotation of the adjusting shaft 311, that is, the control mechanism 50 and the adjusting shaft 311 are integrated, so that the adjusting shaft 311 cannot rotate around the first rotation axis along with the rotating mechanism 10, and at this time, the adjusting shaft 311 and the adjusting matching shaft 321 generate the first relative rotation, thereby adjusting the circumference of the winding needle.

That is, when the circumference of the needle needs to be adjusted, the control end of the control mechanism 50 moves to the rotation stopping section 314 and is connected to the rotation stopping section 314 of the adjusting shaft 311; when the circumference of the winding needle does not need to be adjusted, the control end of the control mechanism 50 is controlled to leave the rotation stopping section 314.

When the first winding needle 22a and the second winding needle 22b are driven by the rotating mechanism 10 to rotate at a high speed during the winding operation, when the control end of the control mechanism 50 is disengaged from the rotation stop section 314 of the adjusting shaft 311, the adjusting shaft 311 has a slow response speed and cannot keep up with the rotating speed of the rotating mechanism 10, so that the adjusting shaft 311 and the adjusting mating shaft 321 are still relatively rotated, and the circumference of the winding needles is erroneously adjusted. In order to solve the problem that the circumference of the needle is easily adjusted by mistake, in the embodiment, the needle winding device further comprises a rotation stopping mechanism 40, and the rotation stopping mechanism 40 is connected to the rotating mechanism 10 to rotate around the first rotating axis along with the rotating mechanism 10. The rotation stopping mechanism 40 has a rotation stopping end which is coupled with the rotation stopping section 314 to integrate the rotation stopping mechanism 40 with the adjusting shaft 311, so that the adjusting shaft 311 can rotate around the first rotation axis synchronously with the rotation stopping mechanism 40 and the rotating mechanism 10.

When the control end of the control mechanism 50 is controlled to move to the rotation stopping section 314, the control end is coupled with the rotation stopping section 314 and pushes the rotation stopping end away from the rotation stopping section 314.

Thus, when the rotation stopping end of the rotation stopping mechanism 40 is coupled with the rotation stopping section 314 of the adjusting shaft 311, the control end of the control mechanism 50 is disengaged from the rotation stopping section 314 of the adjusting shaft 311, and at this time, the rotation stopping mechanism 40 and the adjusting shaft 311 are integrated, so that the adjusting shaft 311 rotates around the first rotation axis along with the rotation stopping mechanism 40, the adjusting shaft 311 and the adjusting coupling shaft 321 do not generate the first relative rotation, and the circumference of the winding needle is not adjusted.

When the control end of the control mechanism 50 moves to the rotation stopping section 314 and pushes the rotation stopping end of the rotation stopping mechanism 40 away from the rotation stopping section 314 of the adjusting shaft 311, at this time, the rotation stopping end of the rotation stopping mechanism 40 is disengaged from the rotation stopping section 314 of the adjusting shaft 311, the control end of the control mechanism 50 is engaged with the rotation stopping section 314 of the adjusting shaft 311, the control mechanism 500 and the adjusting shaft 311 are integrated, the adjusting shaft 311 does not rotate around the first rotation axis along with the rotation stopping mechanism 40 and the rotating mechanism 10, at this time, the adjusting engaging shaft 321 rotates around the first rotation axis along with the rotating mechanism 10, so that the adjusting shaft 311 and the adjusting engaging shaft 321 generate the first relative rotation, thereby adjusting the circumference of the needle winding.

That is, when the circumference of the needle needs to be adjusted, the control end of the rotation stopping mechanism 40 is controlled to be disengaged from the adjusting shaft 311; when the circumference of the winding needle does not need to be adjusted, the rotation stopping end of the rotation stopping mechanism 40 is controlled to be matched and connected with the adjusting shaft 311.

Specifically, in the embodiment, the control mechanism 50 includes a fixed seat 51, a driving block 52 and a second plunger 53. The driving block 52 is connected to the fixed seat 51 as the above-mentioned control end in a controlled movable manner in the first direction. The driving block 52 has a rotation stop hole, and the second plunger 53 is disposed in the driving block 52 and at least partially extends into the rotation stop hole along a radial direction of the rotation stop hole. The driving block 52 can move to the rotation stopping section 314 of the adjusting shaft 311 in the process of moving along the first direction, and the rotation stopping end of the rotation stopping mechanism 40 is pushed away from the rotation stopping section 314, and at this time, the part of the second plunger 53 in the rotation stopping hole enters the rotation stopping groove 3141, so that the adjusting shaft 311 and the driving block 52 are relatively fixed, and the adjusting shaft 311 is prevented from rotating along with the rotating mechanism 10.

Further, the rotation stop groove 3141 extends lengthwise along the axial direction of the adjustment shaft 311, so that the second plunger 53 can smoothly enter or exit the rotation stop groove 3141 when the driving block 52 moves along the axial direction of the adjustment shaft 311. Optionally, the second plunger 53 may be a ball plunger, and the structure and assembly of the ball plunger may be more mature in the prior art, which is not described herein again.

Further, the control mechanism 50 further includes a control driving member 54, a first guiding rod 56 and a driving plate 55, the fixing base 51 has a guiding hole, the first guiding rod 56 is slidably fitted in the guiding hole, the driving block 52 is fixedly connected to one end of the first guiding rod 56 facing the adjusting shaft 311, and the driving plate 55 is fixedly connected to one end of the first guiding rod 56 facing away from the adjusting shaft 311. The control driving member 54 is mounted on the fixing base 51 and is in driving connection with the driving plate 55 to drive the driving plate 55, the first guide rod 56 and the driving block 52 to move along the first direction. Alternatively, the control actuator 54 may employ an air cylinder.

It should be noted that the control mechanism 50 is not limited to be coupled to or disengaged from the adjustment shaft 311 by the plunger cooperating with the rotation stop groove 3141, and in other embodiments, the control mechanism 50 may be configured to clamp or clasp the adjustment shaft 311, and is not limited herein.

In one embodiment, the anti-rotation mechanism 40 includes an end cap 41, an anti-rotation block 42, and a first plunger 43. The end cap 41 is mounted to the rotary mechanism 10 for synchronous rotation about the first axis of rotation following the rotary mechanism 10. The rotation stop block 42 is provided on the end cap 41 and serves as the rotation stop end. The rotation stopping block 42 has a through hole, and the first plunger 43 is disposed on the rotation stopping block 42 and at least partially extends into the through hole along the radial direction of the through hole. The adjusting shaft 311 is rotatably connected to the end cap 41, and the rotation stop section 314 of the adjusting shaft 311 is disposed through the through hole. The rotation stopping section 314 of the adjusting shaft 311 is provided with a rotation stopping groove 3141, and the part of the first plunger 43 located in the through hole extends into the rotation stopping groove 3141, so as to block the adjusting shaft 311 from rotating relative to the rotation stopping block 42, and at this time, the rotating mechanism 10 can drive the adjusting shaft 311 to rotate around the first rotation axis together, so as to stop adjusting the circumference of the needle winding. When the rotation stopping block 42 is pushed away from the rotation stopping section 314 by the driving block 52, the second plunger 53 on the driving block 52 enters the rotation stopping groove 3141, so that the driving block 52 and the adjusting shaft 311 form a whole, at this time, the adjusting shaft 311 cannot rotate together with the rotation stopping block 42, and the rotating mechanism 10 can only drive the adjusting fitting shaft 321 to rotate, so that the first relative rotation is generated between the adjusting shaft 311 and the adjusting fitting shaft 321, and the adjustment of the circumference of the winding needle is realized.

Further, the rotation stop groove 3141 extends lengthwise along the axial direction of the adjustment shaft 311, so that the first plunger 43 can smoothly enter or exit the rotation stop groove 3141 when the rotation stop block 42 moves along the axial direction of the adjustment shaft 311. Optionally, the first plunger 43 may be a ball plunger, and the structure and assembly method of the ball plunger may be more mature prior art, so that the detailed description thereof is omitted here.

Further, the rotation stopping mechanism 40 further includes a second guide rod 44 and a fourth elastic member 45, the end cap 41 has a guide hole, the second guide rod 44 is slidably fitted in the guide hole of the end cap 41, and one end of the second guide rod 44 is fixedly connected to the rotation stopping block 42. The fourth elastic element 45 is sleeved on the second guide rod 44, and opposite ends of the fourth elastic element 45 respectively abut against the end cover 41 and the rotation stopping block 42, so as to provide a pre-tightening force for moving the rotation stopping block 42 along the adjusting shaft 311 toward the rotation stopping section 314 of the adjusting shaft 311. Thus, when the driving block 52 leaves the rotation stopping section 314 of the adjusting shaft 311, the rotation stopping block 42 can move to the rotation stopping section 314 by the elastic force of the fourth elastic member 45 and be reset. Alternatively, the fourth elastic member 45 may employ a spring.

It should be noted that the rotation stopping mechanism 40 is not limited to be coupled to or disengaged from the adjusting shaft 311 by the plunger cooperating with the rotation stopping groove 3141, and in other embodiments, the rotation stopping mechanism 40 may be implemented by clamping, clasping, or the like of the adjusting shaft 311, and is not limited herein.

Referring to fig. 1 to 4, in an embodiment of the present invention, the rotating mechanism 10 includes a rotating sleeve 11, a first sliding sleeve 12, a second sliding sleeve 13 and a rotating frame 14. The rotating sleeve 11 can controllably rotate around the first rotation axis, and the first sliding sleeve 12 and the rotating sleeve 11 are synchronously and rotatably sleeved in the rotating sleeve 11 and controllably move along the first direction relative to the rotating sleeve 11. The second sliding sleeve 13 and the first sliding sleeve 12 are rotatably sleeved in the first sliding sleeve 12 synchronously, and move along a first direction relative to the first sliding sleeve 12. The rotating frame 14 is located inside the second sliding sleeve 13 and is connected to the first sliding sleeve 12, such that the rotating frame 14 can rotate with the first sliding sleeve 12 around the first rotation axis and move with the first sliding sleeve 12 along the first direction.

The reel seat includes a first reel seat 21a and a second reel seat 21b, the first reel seat 21a is connected with the rotating frame 14, so that the first reel seat 21a rotates around the first rotation axis and moves along the first direction along with the rotating frame 14. The second needle rolling seat 21b is connected with the second sliding sleeve 13, and the first needle rolling 22a and the second needle rolling 22b are respectively arranged on the side surfaces of the first needle rolling seat 21a and the second needle rolling seat 21b which deviate from each other. The first winding needle 22a is movable relative to the first winding needle holder 21a toward or away from the second winding needle 22b, and the first actuating member 23a is movably connected to the first winding needle holder 21a in a first direction.

The adjusting member 31 is disposed in the second sliding sleeve 13 and controlled to rotate synchronously with the rotating frame 14 or stop rotating. The adjustment fitting 32 is mounted to the swivel frame 14 for rotation with the swivel frame 14 about a first axis of rotation and movement in a first direction. The moving member 34 is movably connected to the rotating frame 14 along a first direction, so that the moving member 34 can rotate around the first rotation axis and move along the first direction along with the rotating frame 14, and can also move along the first direction relative to the rotating frame 14 under the driving of the screw sleeve 33, so as to adjust the circumference of the winding needle. It can be understood that the rotating sleeve 11, the first sliding sleeve 12 and the second sliding sleeve 13 are coaxially disposed, and the axis of the rotating sleeve 11, the first sliding sleeve 12 and the second sliding sleeve 13 is the first rotation axis.

Therefore, when the first winding needle 22a needs to perform a needle withdrawing or needle inserting operation, the first sliding sleeve 12 is controlled to move along the first direction relative to the rotating sleeve 11, so as to drive the rotating frame 14 to move along the first direction, and the rotating frame 14 drives the first winding needle base 21a and the first winding needle 22a to move along the first direction, that is, the first winding needle 22a performs the needle withdrawing and needle inserting operation.

When the second needle winding 22b needs to perform a needle drawing or inserting operation, the second sliding sleeve 13 is controlled to move along the first direction relative to the first sliding sleeve 12 and the rotating sleeve 11, so as to drive the second needle winding base 21b to move along the first direction, and the second needle winding base 21b drives the second needle winding 22b to move along the first direction, that is, the second needle winding 22b performs a needle drawing or inserting operation.

When the circumference of the winding needle needs to be adjusted, the adjusting member 31 is controlled to stop rotating along with the rotating frame 14, the rotating sleeve 11 rotates around the first rotating axis, so as to drive the first sliding sleeve 12, the second sliding sleeve 13 and the rotating frame 14 to rotate around the first rotating axis, so that the adjusting member 31 and the adjusting matching member 32 generate the above-mentioned first relative rotation, and further drive the moving member 34 to move along the first direction, and drive the first winding needle 22a to move close to or away from the second winding needle 22b under the action of the first driving member 23a and the first driving matching member 24a, so that the adjustment of the circumference of the winding needle is realized.

When the circumference of the winding needle is adjusted in place and the winding operation is required, the adjusting member 31 is controlled to rotate synchronously with the rotating frame 14, so that the first relative rotation between the adjusting member 31 and the adjusting fitting member 32 is not generated, and the adjustment of the circumference of the winding needle is stopped. At this time, the rotating sleeve 11 rotates around the first rotation axis, so as to drive the first sliding sleeve 12, the second sliding sleeve 13 and the rotating frame 14 to rotate around the first rotation axis, and further drive the first winding needle 22a on the first winding needle seat 21a and the second winding needle 22b on the second winding needle seat 21b to rotate around the first rotation axis, so as to wind the material tape around the outer contour formed by splicing the first winding needle 22a and the second winding needle 22b, so as to form the battery cell.

In the process of winding the battery cell, the order of the needle withdrawing and inserting steps of the first winding needle 22a and the second winding needle 22b, the winding step, the step of adjusting the circumference of the winding needle, and the like may adopt an existing process flow, and is not limited herein.

Alternatively, the adjustment fitting 32 is an adjustment fitting shaft 321, and both ends of the adjustment fitting shaft 321 are fitted to the rotating frame 14 through bearings so that the adjustment fitting shaft 321 can be rotatable about the second rotation axis relative to the rotating frame 14.

In an embodiment, the first sliding sleeve 12 is provided with a guide slot extending lengthwise along the first direction, and the rotating sleeve 11 is fixedly connected with a guide block 111, and the guide block 111 is in sliding fit with the guide slot. In this way, the sliding fit of the guide block 111 and the guide groove is used to guide the movement of the first sliding sleeve 12 relative to the rotating sleeve 11 in the first direction, and the guide groove can also be used to define the guide block 111 in the circumferential direction of the first sliding sleeve 12, so that the first sliding sleeve 12 rotates around the first rotation axis in synchronization with the rotating sleeve 11.

In the embodiment, the second sliding sleeve 13 is connected with the first sliding sleeve 12 by a key, so that the second sliding sleeve 13 and the first sliding sleeve 12 can rotate synchronously around the first rotation axis, and the second sliding sleeve 13 can move a certain distance along the first direction relative to the first sliding sleeve 12. More specifically, the outer side of the second sliding sleeve 13 is fixedly connected with a key 131, the inner side of the first sliding sleeve 12 is provided with a key slot extending along the axial direction (i.e. the first direction), and the key 131 is in sliding fit with the key slot, so that the second sliding sleeve 13 and the first sliding sleeve 12 synchronously rotate around the first rotation axis, and the second sliding sleeve 13 can move a certain distance along the first direction relative to the first sliding sleeve 12. Further, the key slot may be the above-mentioned guide slot, that is, only one through slot is formed on the first sliding sleeve 12, and the key 131 and the guide block 111 are both in sliding fit in the through slot, which is beneficial to simplifying the processing process of the key slot and the guide slot. Of course, in another embodiment, the key slot and the guide slot are separately machined, that is, two through slots are formed on the first sliding sleeve 12, the key 131 is slidably fitted in one of the through slots (i.e., the key slot), and the guide block 111 is slidably fitted in the other through slot (i.e., the guide slot).

In an embodiment, the rotating mechanism 10 further includes a first driving block 121 rotatably sleeved on the outer side of the first sliding sleeve 12 around the first rotation axis, and the first driving block 121 is capable of cooperating with an external shifting mechanism, so that the first sliding sleeve 12 is driven by the external shifting mechanism to move along the first direction relative to the rotating sleeve 11, thereby completing the needle withdrawing and inserting actions of the first winding needle 22 a. Alternatively, the first driving block 121 may be assembled to the outside of the first sliding sleeve 12 through a bearing.

In an embodiment, the rotating mechanism 10 further includes a second driving block 131 rotatably sleeved on the outside of the second sliding sleeve 13 around the first rotation axis, and the second driving block 131 is capable of cooperating with the external toggle mechanism, so that the second sliding sleeve 13 is driven by the external toggle mechanism to move along the first direction relative to the rotating sleeve 11, thereby completing the needle withdrawing and inserting actions of the second needle 22 b. Alternatively, the second driving block 131 may be assembled to the outside of the second sliding sleeve 13 through a bearing.

Further, a first positioning block 112 corresponding to the first driving block 121 is installed on an outer side of the rotating sleeve 11, a first magnetic member 1121 is installed on the first positioning block 112, and the first magnetic member 1121 is used for fixing the first driving block 121 by absorbing when the first winding pin 22a is inserted in place. A second positioning block 122 corresponding to the second driving block 131 is further installed on the outer side of the first sliding sleeve 12, a second magnetic attraction piece 1221 is installed on the second positioning block 122, and the second magnetic attraction piece 1221 is used for attracting and fixing the second driving block 131 when the second winding pin 22b is inserted in place. Thus, after the first needle 22a and the second needle 22b are inserted in place, the first magnetic attraction part 1121 adsorbs and fixes the first driving block 121, and the second magnetic attraction part 1221 adsorbs and fixes the second driving block 131, so that the rotating sleeve 11, the first sliding sleeve 12, and the second sliding sleeve 13 are kept relatively fixed, thereby preventing the rotating sleeve 11, the first sliding sleeve 12, and the second sliding sleeve 13 from moving relatively in a first direction during winding operation, which results in the first needle 22a or the second needle 22b moving in the first direction during winding. Alternatively, the first magnetic attracting member 1121 and the second magnetic attracting member 1221 may employ magnets or electromagnets.

Further, the first positioning block 112 is further provided with a buffer 1122 corresponding to the first driving block 121, and in the process that the first driving block 121 drives the first sliding sleeve 12 to move along the first direction, the buffer 1122 can contact with the first driving block 121 and buffer the first driving block 121, so that hard impact on the rotating sleeve 11 when the first positioning block 112 and the second positioning block 122 are shifted to move along the first direction is avoided, and vibration is reduced.

In some embodiments, at least one of the first actuating element 23a and the first actuating fitting 24a has a first inclined surface 231a slidably engaged with the other of the first actuating element and the first inclined surface 231a is disposed obliquely with respect to the first rotation axis, so that when the first actuating element 23a moves along the first direction with respect to the first actuating fitting 24a, the first actuating fitting 24a is actuated to drive the first winding needle 22a to move away from the second winding needle 22b, thereby increasing the circumference of the winding needle. Preferably, the first actuating member 23a and the first actuating mating member 24a both have the first inclined surface 231a, and the two first inclined surfaces 231a are attached to each other, so as to improve the flexibility and stability of the relative sliding of the first actuating member 23a and the first actuating mating member 24a along the first inclined surface 231a, which is beneficial to improve the flexibility and stability of adjusting the circumference of the winding needle.

Specifically, in the embodiment, the needle winding mechanism 20 further includes a first limiting member 25a and a first elastic member 26a, and the first limiting member 25a includes a first rod portion 251a and a first head portion 252a connected to one end of the first rod portion 251 a. The first rod portion 251a is disposed through the first winding needle 22a and connected to the first winding needle seat 21a, and the first head portion 252a is located on a side of the first winding needle 22a away from the second winding needle 22 b. Opposite ends of the first elastic element 26a abut against the first head portion 252a and the first winding needle 22a, respectively, for providing a pre-tightening force to move the first winding needle 22a along the first rod portion 251a to approach the second winding needle 22 b. In this way, when the moving member 34 drives the first actuating member 23a to move forward in the first direction (i.e. upward in the embodiment shown in fig. 3), the first actuating member 23a pushes the first actuating fitting 24a and the first winding needle 22a to move away from the second winding needle 22b via the first inclined surface 231a (at this time, the first elastic member 26a is compressed), so as to increase the circumference of the winding needle. When the moving member 34 drives the first actuating member 23a to move reversely in the first direction (i.e. to move downwards in the embodiment shown in fig. 3), the first actuating member 23a releases the pushing on the first actuating mating member 24a, the first actuating mating member 24a moves towards the first actuating member 23a under the elastic force of the first elastic member 26a, so that the first actuating mating member 24a and the first actuating member 23a are always kept in contact, and meanwhile, the first actuating mating member 24a drives the first winding needle 22a to move towards the direction close to the second winding needle 22b, thereby reducing the circumference of the winding needle. Alternatively, the first elastic member 26a may employ a spring.

Further, the first rod portion 251a of the first limiting member 25a and the first reel seat 21a can be connected by screw threads. Thus, the range of movement of the first winding pin 22a relative to the second winding pin 22b, i.e. the adjustment range of the circumference of the winding pin, can be controlled by screwing the first limiting member 25 a. Alternatively, the first limiting member 25a may be a limiting screw.

In a specific embodiment, the needle winding mechanism 20 further includes a first guide sleeve and a first guide pillar 27a, the first guide sleeve is mounted on the first needle winding seat 21a, one end of the first guide pillar 27a is fixedly connected to the first needle winding 22a, and the other end of the first guide pillar 27a is slidably fitted in the first guide sleeve. Therefore, the first guide post 27a and the first guide sleeve are used for guiding the movement of the first winding needle 22a relative to the first winding needle seat 21a, which is beneficial to improving the adjustment stability and the adjustment precision of the circumference of the winding needle.

In some embodiments, the second winding needle 22b is movably connected to the second winding needle seat 21b toward a direction approaching or separating from the first winding needle 22 a. The needle winding mechanism 20 further includes a second actuating member 23a movably connected to the second needle winding base 21b in the first direction, and a second actuating fitting 24a connected to the second needle winding base 22 b. The second actuating member 23a can follow the moving member 34 to move in the first direction. The second actuating engagement element 24a engages with the second actuating element 23a and moves the second winding pin 22b toward or away from the first winding pin 22a in response to the second actuating element 23a moving in the first direction. Therefore, the moving member 34 moves along the first direction, and the first driving member 23a and the second driving member 23a can be driven to synchronously move along the first direction, so that the first driving fitting member 24a and the second driving fitting member 24a respectively drive the first winding needle 22a and the second winding needle 22b to be close to or far away from each other, thereby realizing the adjustment of the circumference of the winding needle, being beneficial to improving the adjustment range of the circumference of the winding needle, and enabling the first winding needle 22a and the second winding needle 22b to be always symmetrically arranged with each other.

In one embodiment, at least one of the second actuating member 23a and the second actuating fitting 24a has a second inclined surface 231b slidably fitted with the other. The second inclined surface 231b is disposed obliquely relative to the first rotation axis, so that when the second actuating element 23a moves relative to the second actuating fitting 24a along the first direction, the second actuating fitting 24a can be actuated to drive the second winding needle 22b to move towards the direction away from the first winding needle 22a, thereby increasing the circumference of the winding needle. Preferably, the second actuating member 23a and the second actuating mating member 24a both have the second inclined surface 231b, and the two second inclined surfaces 231b are attached to each other, so as to improve the flexibility and stability of the relative sliding of the second actuating member 23a and the second actuating mating member 24a along the second inclined surface 231b, which is beneficial to improve the flexibility and stability of adjusting the circumference of the winding needle.

In an embodiment, the needle winding mechanism 20 further includes a second limiting member 25b and a second elastic member 26b, and the second limiting member 25b includes a second rod portion 251b and a second head portion 252b connected to one end of the second rod portion 251 b. The second rod 251b is disposed through the second winding needle 22b and connected to the second winding needle seat 21b, and the second head 252b is located on a side of the second winding needle 22b away from the first winding needle 22 a. Opposite ends of the second elastic element 26b abut against the second head portion 252b and the second winding pin 22b, respectively, for providing a pre-tightening force to move the second winding pin 22b along the second rod portion 251b to approach the first winding pin 22 a. In this way, when the moving member 34 drives the second actuating member 23a to move forward in the first direction (i.e. upward in the embodiment shown in fig. 3), the second actuating member 23a pushes the second actuating fitting 24a and the second winding pin 22b to move away from the first winding pin 22a (at this time, the second elastic member 26b is compressed), so as to increase the circumference of the winding pin. When the moving member 34 drives the second actuating element 23a to move reversely in the first direction (i.e. to move downwards in the embodiment shown in fig. 3), the second actuating element 23a releases the pushing on the second actuating matching element 24a, the second actuating matching element 24a moves towards the second actuating element 23a under the elastic force of the second elastic element 26b, so that the second actuating matching element 24a and the second actuating element 23a are always kept in contact, and meanwhile, the second actuating matching element 24a drives the second winding needle 22b to move towards the direction close to the first winding needle 22a, thereby reducing the circumference of the winding needle. Alternatively, the second elastic member 26b may employ a spring.

Further, the second rod portion 251b of the second limiting member 25b and the second needle rolling seat 21b may be screwed. In this way, the range of movement of the second winding pin 22b relative to the first winding pin 22a, i.e. the adjustment range of the circumference of the winding pin, can be controlled by screwing the second limiting member 25 b. Alternatively, the second limiting member 25b may be a limiting screw.

In one embodiment, the needle winding mechanism 20 further includes a pushing block 28a and a linkage pushing block 28 b. The pushing block 28a is movably connected to the first reel seat 21a along the first direction, one end of the pushing block 28a is connected to the moving member 34, and the other end of the pushing block 28a is connected to the first actuating member 23a, so that the moving member 34 drives the first actuating member 23a to move along the first direction through the pushing block 28 a. The linkage pushing block 28b is movably connected to the second needle rolling seat 21b along the first direction, and at least a part of the linkage pushing block 28b is located on a moving path of the pushing block 28a moving along the first direction, so that the linkage pushing block 28b can be driven to move along the first direction when the pushing block 28a moves along the first direction. In the embodiment shown in fig. 5, the linkage pushing block 28b is located on the upper side of the pushing block 28 a.

In this way, when the moving member 34 drives the pushing block 28a to move forward in the first direction (i.e. upward in the embodiment shown in fig. 5), the pushing block 28a drives the linkage pushing block 28b to move forward in the first direction synchronously, so that the pushing block 28a and the linkage pushing block 28b drive the first actuating member 23a and the second actuating member 23a to move forward in the first direction respectively, and push the first winding needle 22a on the first actuating mating member 24a and the second winding needle 22b on the second actuating mating member 24a to move away from each other (at this time, the first elastic member 26a and the second elastic member 26b are compressed) respectively through the first inclined surface 231a and the second inclined surface 231b, thereby increasing the circumference of the winding needle.

When the moving member 34 drives the pushing block 28a to move reversely in the first direction (i.e. downward in the embodiment shown in fig. 5), the pushing block 28a is separated from the linkage pushing block 28b to provide a moving space for the linkage pushing block 28b to move reversely in the first direction, the second driving engaging element 24a presses the second driving element 23a to move under the elastic force of the second elastic element 26b, the second driving element 23a and the linkage pushing block 28b are pushed to move reversely in the first direction under the action of the second inclined surface 231b, and at this time, the second winding pin 22b follows the second driving engaging element 24a to move toward the direction close to the first winding pin 22 a. Meanwhile, the pushing block 28a drives the first actuating member 23a to move reversely in the first direction, so that the first actuating member 23a releases the pushing on the first actuating fitting member 24a, and the first actuating fitting member 24a moves towards the first actuating member 23a under the action of the elastic force of the first elastic member 26a, and always keeps in contact with the first actuating member 23a, and meanwhile, the first winding needle 22a moves towards the direction close to the second winding needle 22b along with the first actuating fitting member 24 a. That is, the first winding needle 22a and the second winding needle 22b are both moved toward the direction approaching each other, achieving a reduction in the circumferential length of the winding needles.

It is understood that the pushing block 28a and the first actuating member 23a can be reciprocally moved in the first direction relative to the first roll needle holder 21a by means of a sliding slot formed in the first roll needle holder 21a, and the like, and is not limited herein. The linkage pushing block 28b and the second actuating member 23a can reciprocate along the first direction relative to the second needle rolling seat 21b by means of a sliding slot formed in the second needle rolling seat 21b, and the like, which is not limited herein.

In a specific embodiment, the needle winding mechanism 20 further includes a second guide sleeve and a second guide pillar 27b, the second guide sleeve is mounted on the second needle winding base 21b, one end of the second guide pillar 27b is fixedly connected to the second winding needle 22b, and the other end of the second guide pillar 27b is slidably fitted in the second guide sleeve. Therefore, the second guide post 27b and the second guide sleeve are used for guiding the movement of the second winding needle 22b relative to the second winding needle seat 21b, which is beneficial to improving the adjustment stability and the adjustment precision of the circumference of the winding needle.

Referring to fig. 2 and 4, in some embodiments, the rotating mechanism 10 further includes a swing assembly 15, and the swing assembly 15 includes a mounting seat 151, a swing member 152, and a third elastic member 153. The mounting seat 151 is coupled to the second runner 13 to rotate about the first rotation axis and move in the first direction in synchronization with the second runner 13. One end of the oscillating member 152 is rotatably connected to the mounting base 151 about a third rotation axis intersecting the first rotation axis, and the other end of the oscillating member 152 is connected to the second reel needle base 21b so that the second reel needle base 21b oscillates about the third rotation axis with the oscillating member 152. At this time, the second needle winding base 21b is indirectly connected to the second sliding sleeve 13 through the swinging member 152 and the mounting base 151. The third elastic member 153 abuts between the swinging member 152 and the mounting seat 151, and is used for providing a pre-tightening force for enabling the swinging member 152 to drive the second winding needle 22b to swing around the third rotation axis toward a direction close to the first winding needle 22 a. Thus, when the end of the needle winding mechanism 20 far away from the rotating mechanism 10 is positioned by using the needle winding tailstock, the end of the first needle winding 22a and the end of the second needle winding 22b far away from the rotating mechanism 10 can be slightly opened (at this time, the third elastic member 153 is compressed), so that when a battery cell needs to be blanked after the battery cell is wound, the needle winding tailstock is separated from the needle winding mechanism 20, the end of the second needle winding 22b far away from the rotating mechanism 10 swings towards the first needle winding 22a under the elastic force of the third elastic member 153, the circumference of the needle winding is slightly reduced, the needle winding mechanism is beneficial for the first needle winding 22a and the second needle winding 22b to perform needle drawing action, and the problems of taking out, crumpling and the like of a membrane on the inner layer of the battery cell are prevented. It should be noted that the needle-rolling tailstock may adopt a mature prior art, and therefore, the detailed description thereof is omitted.

In the embodiment, the swinging member 152 is mounted on the mounting seat 151 through a swinging shaft 154, and the axis of the swinging shaft 154 is the third rotation axis. The third elastic member 153 is located at a position between the balance staff 154 and the second reel seat 21 b. Alternatively, the third elastic member 153 may employ a spring. The third axis of rotation is perpendicular to the first axis of rotation.

Of course, the swing assembly 15 is not necessary, and in other embodiments, the swing assembly 15 may not be provided, and the second roll needle holder 21b is directly connected to the second sliding sleeve 13.

Specifically, in the embodiment, the end cap 41 is fixedly installed at one end of the second sliding sleeve 13 away from the needle winding mechanism 20, one end of the adjusting shaft 311 is assembled on the installation seat 151 through a bearing, and the other end of the adjusting shaft 311 is assembled on the end cap 41 through a bearing and penetrates out to one side of the end cap 41 away from the needle winding mechanism 20. The rotation stop section 314 of the adjusting shaft 311 is located at the end penetrating out to the side of the end cover 41 far away from the needle winding mechanism 20 so as to be matched with the control mechanism 50.

Based on the needle winding device, the invention further provides winding equipment comprising the needle winding device in any one of the embodiments. Specifically, the winding equipment further comprises a turret, wherein the needle winding device is installed on the turret, and the turret is used for driving the needle winding device to sequentially rotate to a winding station for winding and forming the battery cell, a rubberizing station for rubberizing the battery cell and a blanking station for blanking the battery cell. It should be noted that the specific structure of the turret may adopt a mature prior art, and therefore, the detailed description thereof is omitted here.

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 express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

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Winding needle device and winding equipment

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