CN218896677U

CN218896677U - Needle mechanism is rolled up to variable diameter

Info

Publication number: CN218896677U
Application number: CN202222702954.XU
Authority: CN
Inventors: 鲁树立; 王从凤; 吴铁成; 王崇鹏
Original assignee: Shenzhen Wande Automation Technology Co ltd
Current assignee: Shenzhen Wande Automation Technology Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-04-21
Anticipated expiration: 2032-10-13

Abstract

The utility model discloses a variable-diameter needle rolling mechanism which comprises a needle rolling main body, a movable driving assembly and a rotary driving assembly, wherein the needle rolling main body comprises a winding shaft assembly, a needle rolling and a fixing seat arranged between the winding shaft assembly and the needle rolling, the winding shaft assembly is fixedly arranged at a first end of the fixing seat, the needle rolling comprises two needle rolling pieces which are oppositely arranged, one side, close to each other, of each needle rolling piece is respectively provided with two axial mounting grooves, mounting plates are arranged in the mounting grooves, one end of each mounting plate extends out from one end, close to the fixing seat, of each mounting plate and is fixedly arranged at a second end of the fixing seat, one of the two needle rolling pieces can slide along the length direction of the mounting plate corresponding to the needle rolling piece towards the direction close to or away from the fixing seat, and the other needle rolling piece and the corresponding mounting plate are relatively fixed. The utility model improves the equipment efficiency and the utilization rate.

Description

Needle mechanism is rolled up to variable diameter

Technical Field

The utility model relates to the technical field of manufacturing of lithium battery cells, in particular to a variable-diameter winding needle mechanism.

Background

In the winding and forming process of the lithium battery cell, as the pole pieces are usually supplied in a whole roll, certain errors generally exist in the spacing between the pole lugs of the pole pieces, and therefore, the situation that the pole lugs are misplaced in the winding process of the winding cell is caused. The existing method for correcting the electrode lug dislocation is generally to take down the winding needle of the winding needle mechanism manually after stopping, then paste the teflon film on the winding needle or add a gasket in the winding needle to adjust the winding diameter (namely the winding diameter) of the winding needle, so that the alignment degree of the electrode lug of the electric core can be adjusted when the next electric core is formed by winding, and the purpose of correcting the electrode lug dislocation of the electric core is achieved. However, the method requires manual intervention such as unreeling needles, and is long in time consumption, and seriously affects the equipment efficiency and utilization rate.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides the variable-diameter winding needle mechanism which does not need manual intervention such as unwinding needles and the like, has short time consumption and improves the equipment efficiency and the utilization rate.

The technical scheme adopted for solving the technical problems is as follows:

the first aspect of the utility model provides a variable-diameter needle rolling mechanism, which comprises a needle rolling main body, a moving driving assembly for driving the needle rolling main body to move forwards and backwards and a rotating driving assembly for driving the needle rolling main body to rotate, wherein the needle rolling main body comprises a winding shaft assembly, a needle rolling and a fixed seat positioned between the winding shaft assembly and the needle rolling, the winding shaft assembly is fixedly arranged at a first end of the fixed seat, the needle rolling comprises two needle rolling pieces which are oppositely arranged, one sides of the two needle rolling pieces, which are mutually close, are respectively provided with two axial mounting grooves, mounting plates are arranged in the mounting grooves, one ends of the mounting plates extend out from one end, close to the fixed seat, of the mounting grooves and are fixedly arranged at a second end of the fixed seat, one of the two needle rolling pieces can slide towards a direction close to or away from the fixed seat along the length direction of the mounting plate corresponding to the needle rolling piece, and the other needle rolling piece is relatively fixed with the corresponding mounting plate; the bottom of the mounting groove of the needle rolling piece which can slide towards the direction close to or far from the fixed seat is an inclined surface, the mounting plate corresponding to the needle rolling piece which can slide towards the direction close to or far from the fixed seat is provided with a mounting plate inclined surface matched with the inclined surface, and one side of the mounting plate adjacent to the inclined surface is provided with a mounting plate inclined surface matched with the inclined surface.

As an optimized technical scheme, the two rolling needle parts are a first rolling needle part and a second rolling needle part respectively, the mounting plate corresponding to the first rolling needle part is a first mounting plate, the mounting plate corresponding to the second rolling needle part is a second mounting plate, the mounting groove of the first rolling needle part is a first mounting groove, and the mounting groove of the second rolling needle part is a second mounting groove; the first winding needle piece can slide along the length direction of the first mounting plate corresponding to the first winding needle piece in a direction approaching to or far from the fixed seat, and the second winding needle piece is relatively fixed with the second mounting plate corresponding to the second winding needle piece; the bottom of the first mounting groove is an inclined plane, and one side of the first mounting plate, which is close to the inclined plane, is provided with a mounting plate inclined plane matched with the inclined plane.

As a preferred embodiment, the inclined surface is inclined toward a direction approaching the second winding pin or inclined toward a direction separating from the second winding pin.

As the preferable technical scheme, one end of the first needle rolling piece, which is close to the fixed seat, is provided with a deflector rod, the deflector rod is perpendicular to the first mounting plate, the first end of the deflector rod is close to the first mounting plate, and the second end of the deflector rod protrudes out of the first needle rolling piece.

As the preferred technical scheme, the needle body is rolled up still includes the auto-lock subassembly, the auto-lock subassembly includes a plurality of bulb plungers, T type piece and ratchet, the one side of first mounting panel that is close to the inclined plane is equipped with the through-hole, the length direction of through-hole is the same with the length direction of first mounting panel, the through-hole is located between fixing base and the first needle rolling piece, the both sides inner wall of through-hole is equipped with respectively and is equipped with a plurality of mounting holes, a plurality of bulb plungers respectively fixed mounting to in a plurality of mounting holes and a plurality of bulb plungers's bulb stretches into respectively in the through-hole, T type piece is fixed to be set up to the one end that is close to of first needle rolling piece is close to the fixing base, ratchet is fixed to be set up T type piece and is located in the through-hole, the both sides of ratchet are equipped with a plurality of tooth portions respectively, the extending direction of tooth portion with the length direction of through-hole is perpendicular, forms between two adjacent tooth portions, the tooth groove with the bulb plunger's correspondence, the bulb plunger is used for with the tooth groove that corresponds with the bulb.

As the preferable technical scheme, one side of keeping away from of first mounting panel the inclined plane is equipped with the installation cavity, the length direction in installation cavity is the same with the length direction of first mounting panel, it still includes can make the first needle spare that rolls up smooth gliding wheel component, wheel component sets up in the installation cavity and with first needle spare fixed connection that rolls up, the slip of first needle spare can drive wheel component is in the installation intracavity removes.

As an optimized technical scheme, the variable-diameter needle rolling mechanism further comprises a shifting fork assembly, the shifting fork assembly is located below the needle rolling main body, the shifting fork assembly comprises a vertical plate, a shifting fork arranged on one side of the vertical plate in a sliding mode and a driving unit fixedly arranged on one side of the vertical plate, a fork opening is formed in the top end of the shifting fork and used for clamping the second end of the shifting rod to limit the first needle rolling piece to slide, and the driving unit is used for driving the shifting fork to move up and down.

As an optimized technical scheme, the two rolling needle parts are a first rolling needle part and a second rolling needle part respectively, the mounting plate corresponding to the first rolling needle part is a first mounting plate, the mounting plate corresponding to the second rolling needle part is a second mounting plate, the mounting groove of the first rolling needle part is a first mounting groove, and the mounting groove of the second rolling needle part is a second mounting groove; the second winding needle piece can slide along the length direction of the second mounting plate corresponding to the second winding needle piece in a direction approaching to or far from the fixed seat, and the first winding needle piece and the first mounting plate corresponding to the first winding needle piece are relatively fixed; the bottom of the second mounting groove is an inclined plane, and one side of the second mounting plate, which is close to the inclined plane, is provided with a mounting plate inclined plane matched with the inclined plane.

As a preferred embodiment, the inclined surface is inclined toward a direction approaching the first winding needle or inclined toward a direction separating from the first winding needle.

As a preferable technical scheme, the inclined angle of the inclined plane is 0.2-0.6 degrees.

As an optimal technical scheme, a friction plate is arranged between the inclined plane and the inclined plane of the mounting plate, and the friction plate is fixedly arranged on the inclined plane of the mounting plate.

The second aspect of the utility model provides a variable diameter needle rolling mechanism, which comprises a needle rolling main body, a moving driving component for driving the needle rolling main body to move forwards and backwards and a rotating driving component for driving the needle rolling main body to rotate, the winding needle main body comprises a winding shaft component, a winding needle and a fixing seat positioned between the winding shaft component and the winding needle, the winding shaft component is fixedly arranged at the first end of the fixed seat, the winding needle comprises two winding needle pieces which are oppositely arranged, the two rolling needle parts are respectively a first rolling needle part and a second rolling needle part, one side of the first rolling needle part and one side of the second rolling needle part, which are close to each other, are respectively provided with a first axial installation groove and a second axial installation groove, a first mounting plate is arranged in the first mounting groove, one end of the first mounting plate extends out from one end of the first mounting groove close to the fixing seat and is fixedly arranged at the second end of the fixing seat, a second mounting plate is arranged in the second mounting groove, one end of the second mounting plate extends out from one end of the second mounting groove close to the fixing seat and is fixedly arranged at the second end of the fixing seat, the first needle rolling piece can slide along the length direction of the first mounting plate towards the direction approaching or separating from the fixed seat, the bottom of the first mounting groove is a first inclined plane, one side of the first mounting plate, which is close to the first inclined plane, is provided with a first mounting plate inclined plane matched with the first inclined plane, the second needle rolling piece can slide along the length direction of the second mounting plate towards the direction approaching or separating from the fixed seat, the bottom of the second mounting groove is a second inclined plane, and one side of the second mounting plate, which is close to the second inclined plane, is provided with a second mounting plate inclined plane matched with the second inclined plane.

As a preferred technical solution, the first inclined surface is inclined toward a direction approaching the second winding needle member or toward a direction separating from the second winding needle member, and the second inclined surface is inclined toward a direction approaching the first winding needle member or toward a direction separating from the first winding needle member.

As a preferable technical scheme, the inclination angles of the first inclined plane and the second inclined plane are 0.2-0.6 degrees.

As the preferable technical scheme, the one end of the first needle rolling piece, which is close to the fixed seat, is provided with a first deflector rod, the first deflector rod is perpendicular to the first mounting plate, the first end of the first deflector rod is close to the first mounting plate, the second end of the first deflector rod protrudes out of the first needle rolling piece, the one end of the second needle rolling piece, which is close to the fixed seat, is provided with a second deflector rod, the second deflector rod is perpendicular to the second mounting plate, the first end of the second deflector rod is close to the second mounting plate, and the second end of the second deflector rod protrudes out of the second needle rolling piece.

As an optimized technical scheme, the variable-diameter needle rolling mechanism further comprises a shifting fork assembly, the shifting fork assembly is located below the needle rolling main body, the shifting fork assembly comprises a vertical plate, a shifting fork arranged on one side of the vertical plate in a sliding mode and a driving unit fixedly arranged on one side of the vertical plate, a fork opening is formed in the top end of the shifting fork, the fork opening is used for forking the second end of the first shifting rod to limit sliding of the first needle rolling piece or used for forking the second end of the second shifting rod to limit sliding of the second needle rolling piece, and the driving unit is used for driving the shifting fork to move up and down.

As an optimized technical scheme, the variable-diameter needle rolling mechanism further comprises two shifting fork assemblies, the two shifting fork assemblies are respectively located above and below the needle rolling body, each shifting fork assembly comprises a vertical plate, a shifting fork arranged on one side of the vertical plate in a sliding mode and a driving unit fixedly arranged on one side of the vertical plate, a fork opening is formed in the top end of each shifting fork, the fork opening of each shifting fork assembly located below the needle rolling body is used for forking the second end of the corresponding first shifting rod to limit sliding of the corresponding first needle rolling piece, the fork opening of each shifting fork assembly located above the needle rolling body is used for forking the corresponding second end of the corresponding second shifting rod to limit sliding of the corresponding second needle rolling piece, and the driving unit is used for driving the corresponding shifting fork to move up and down.

The beneficial effects of the utility model are as follows: according to the utility model, the winding diameter of the winding needle is adjusted without intervention of manual unwinding needle and the like, so that the time consumption is short, the equipment efficiency and the utilization rate are improved, the labor cost is reduced, and the rejection rate of the battery cell is reduced.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a schematic view of a first angle structure of a variable diameter needle winding mechanism according to a first embodiment of the present utility model;

FIG. 2 is an enlarged partial schematic view of the portion E shown in FIG. 1;

FIG. 3 is a schematic view of a second angle configuration of the variable diameter needle roller mechanism of FIG. 1;

FIG. 4 is a schematic view of the variable diameter needle mechanism of FIG. 1 with the needle body removed and the winding shaft assembly at a first angle;

FIG. 5 is a schematic view of the variable diameter needle mechanism of FIG. 1 with the needle body removed and the winding shaft assembly at a second angle;

FIG. 6 is a schematic plan view of the variable diameter needle mechanism of FIG. 1 with the winding shaft assembly removed from the needle body;

FIG. 7 is a schematic view of the needle body of FIG. 4 with the winding shaft assembly and anchor mount removed;

FIG. 8 is a schematic cross-sectional view of the needle body of FIG. 7 with the winding shaft assembly and anchor mount removed;

FIG. 9 is an enlarged partial schematic view of the portion F shown in FIG. 8;

FIGS. 10 and 11 are schematic exploded views of the needle body of FIG. 7 with the winding shaft assembly and anchor mount removed;

FIG. 12 is a schematic view of a second needle member of the needle body of FIG. 7;

FIG. 13 is a schematic view of the first mounting plate of the needle body of FIG. 7;

FIG. 14 is a schematic view of the roller assembly of the needle body of FIG. 7;

FIG. 15 is a schematic view of the fork assembly of the variable diameter needle winding mechanism of FIG. 1;

FIG. 16 is an exploded view of a fork assembly of the variable diameter needle winding mechanism of FIG. 1;

FIG. 17 is a schematic view of a variable diameter needle winding mechanism according to a second embodiment of the present utility model;

FIG. 18 is a schematic view of the variable diameter needle mechanism of FIG. 17 with the winding shaft assembly removed from the needle body;

FIG. 19 is a schematic plan view of the winding needle body of FIG. 18 with the winding shaft assembly removed;

FIG. 20 is a schematic view of the needle body of FIG. 18 with the winding shaft assembly and anchor removed;

FIG. 21 is a schematic cross-sectional view of the needle body of FIG. 20 with the winding shaft assembly and anchor mount removed;

FIG. 22 is a partially enlarged schematic illustration of the portion G of FIG. 21;

FIG. 23 is an exploded view of the winding needle body of FIG. 20 with the winding shaft assembly and mounting base removed;

FIG. 24 is a schematic view of a second needle member of the needle body of FIG. 20;

FIG. 25 is a schematic view of the structure of the second mounting plate of the needle body of FIG. 20;

fig. 26 is a schematic structural view of a variable diameter needle winding mechanism according to a third embodiment of the present utility model;

FIG. 27 is a schematic view of the variable diameter needle mechanism of FIG. 26 with the winding shaft assembly removed from the needle body;

FIG. 28 is a schematic plan view of the winding needle body of FIG. 27 with the winding shaft assembly removed;

FIG. 29 is a schematic view of the needle body of FIG. 27 with the winding shaft assembly and mounting base removed;

FIG. 30 is a schematic cross-sectional view of the needle body of FIG. 29 with the winding shaft assembly and anchor removed;

FIG. 31 is an enlarged partial schematic view of the portion H of FIG. 30;

FIG. 32 is an enlarged partial schematic view of the portion I shown in FIG. 30;

fig. 33 is an exploded view of the winding needle body of fig. 29 with the winding shaft assembly and the holder removed.

Detailed Description

The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.

First embodiment

Referring to fig. 1 to 3, a variable diameter needle rolling mechanism according to a first embodiment of the present utility model includes a needle rolling body 100, a moving driving assembly 200 for driving the needle rolling body 100 to move back and forth, and a rotating driving assembly (not shown) for driving the needle rolling body 100 to rotate.

The mobile drive assembly 200 is of conventional construction. The moving driving assembly 200 is positioned at the right of the winding needle body 100 and is disposed in parallel with the winding needle body 100. The moving driving assembly 200 mainly includes a linear driving module 202, a moving rod 203, a supporting plate 204, a connecting block 205, and a pulling rod 208. The movable rod 203 is located in the linear driving module 202, one end of the movable rod 203 is fixedly connected with a screw nut of the linear driving module 202, the other end of the movable rod 203 extends out of the linear driving module 202 and is fixedly connected with the connecting block 205, the connecting block 205 is fixedly arranged to the sliding block 206, the sliding block 206 is slidably arranged to the sliding rail 207, the sliding rail 207 is fixedly arranged to one side, close to the winding needle main body 100, of the supporting plate 204 and extends along the length direction of the supporting plate 204, and the linear driving module 202 is fixedly arranged to one side, far away from the winding needle main body 100, of the supporting plate 204. One end of the pull rod 208 is fixedly provided to the slider 207, and the other end extends toward the winding needle body 100 and is provided with two cam followers 209. The linear driving module 202 is used for driving the moving rod 203 to move back and forth, so as to drive the connecting block 205, the sliding block 206 and the pull rod 208 to move back and forth along the sliding rail 207. The support plate 204 is fixedly provided to one side of two loops 210, and the two loops 210 are connected by a connection post (not shown), wherein the loop 210 positioned in front is used for fixing a fixing plate provided to the winding device. The winding heads of the winding device are rotatably mounted in the two loops 210, the winding needle body 100 passes through the winding heads and is rotatably connected with the winding heads, the winding needle body 100 can rotate along with the rotation of the winding heads, and the winding heads can drive the winding needle body 100 to rotate from the unloading station to the winding station or from the winding station to the unloading station. The fixing plate is provided with a region corresponding to the winding station and the unloading station, so that the winding needle body 100 can conveniently pass through the fixing plate and the winding head can conveniently drive the winding needle body 100 to rotate in the region. When the winding forming cell is to be performed, the winding needle body 100 is driven to move forwards by the moving driving assembly 200, after the winding needle 20 of the winding needle body 100 passes through the area of the fixing plate and reaches the unloading station, the winding head drives the winding needle body 100 to rotate from the unloading station to the winding station, the winding forming cell can be performed by the winding needle 20 of the winding needle body 100, after the winding forming cell is completed, the winding needle body 100 is driven to rotate from the winding station to the unloading station by the winding head, and then the winding needle body 100 is driven to move backwards by the moving driving assembly 200 after the unloading is completed, so that the winding needle body 100 returns to the initial position, such as the position shown in fig. 1 and 3.

The rotary driving assembly is of an existing structure, is mounted on a frame of the winding device and mainly comprises a servo motor.

The winding needle body 100 includes a winding shaft assembly 10, a cylindrical winding needle 20, a fixing base 30 between the winding shaft assembly 10 and the winding needle 20, and a clip needle 40. The winding needle 40 is used for winding the pole piece to wind and form the battery cell. The clamping needle 40 is used to clamp the septum. The winding shaft assembly 10 is fixedly disposed to a first end of the fixing base 30, and the winding needle 20 is fixedly disposed to a second end of the fixing base 30. The winding shaft assembly 10 is of conventional construction. The winding shaft assembly 10 mainly includes a winding shaft 12, one end of the winding shaft 12 is fixedly arranged at a first end of the fixed seat 30 through a flange 13, a cam 16 is arranged at the other end of the winding shaft, the cam 16 is used for matching with two cam followers 209, and when the linear driving module 202 drives the moving rod 203 to move forwards and backwards, the winding shaft 12 can be driven to move forwards and backwards under the action of the two cam followers 209 and the cam 16, and the winding needle main body 100 can be driven to move forwards and backwards integrally. The winding shaft 12 is connected to the rotation driving unit through a timing belt transmission unit, so that the rotation driving unit can drive the winding needle body 100 to rotate. The synchronous belt transmission assembly comprises a driving wheel, a driven wheel 14 and a synchronous belt 15, wherein the driven wheel 14 of the synchronous belt transmission assembly is fixedly sleeved on the periphery of the winding shaft 12, and the driving wheel of the synchronous belt transmission assembly is fixedly sleeved on the periphery of a motor shaft of the servo motor.

As shown in fig. 4 to 8, 10 and 11, the winding needle 20 includes two semi-cylindrical winding needle members disposed opposite to each other in a left-right direction, and the two winding needle members are a first winding needle member 22 and a second winding needle member 23, respectively. The first winding needle member 22 and the second winding needle member 23 are provided with a first mounting groove 222 and a second mounting groove 232 in the axial direction (i.e., the axial direction of the winding needle 20), respectively, on the sides thereof which are close to each other. As shown in fig. 12, two hollowed-out portions 233 communicated with the second mounting groove 232 are provided on one side of the second winding needle member 23 close to the first winding needle member 22, and the weight of the winding needle 20 can be reduced due to the arrangement of the hollowed-out portions 233. The first mounting groove 222 is internally provided with a first mounting plate 24, one end of the first mounting plate 24 extends out from one end of the first mounting groove 222 close to the fixed seat 30 and is fixedly arranged at the second end of the fixed seat 30, the other end is provided with a first positioning block 241, and the first positioning block 241 is positioned outside the first mounting groove 222. The second mounting groove 232 is internally provided with a second mounting plate 25, one end of the second mounting plate 25 extends out from one end of the second mounting groove 232, which is close to the fixed seat 30, and is fixedly arranged at the second end of the fixed seat 30, the other end of the second mounting plate is provided with a second positioning block 251, the first positioning block 241 and the second positioning block 251 are used for being matched with a positioning hole of a positioning mechanism of a winding device, and when the winding needle main body 100 is positioned at a winding station, the first positioning block 241 and the second positioning block 251 are matched with the positioning hole, so that the winding needle main body 100 can be rotatably supported through the positioning mechanism.

The clamp pin 40 is located between the first mounting plate 24 and the second mounting plate 25. The needle 40 includes a first needle holder 42 and a second needle holder 43 disposed opposite to each other, and a holding gap for holding the septum is formed between the first needle holder 42 and the second needle holder 43. The first pin clamping member 42 is accommodated in the first mounting groove 222, part of the first pin clamping member 42 protrudes out of one side, close to the second pin rolling member 23, of the first pin rolling member 22, the first pin clamping member 42 is not in contact with the first mounting plate 24, one end of the first pin clamping member 42 protrudes from one end, close to the fixed seat 30, of the first mounting groove 222 and is arranged to the second end of the fixed seat 30, the other end protrudes from one end, far from the fixed seat 30, of the first mounting groove 222, the second pin clamping member 43 is accommodated in the second mounting groove 232, part of the second pin clamping member 43 protrudes out of one side, close to the first pin rolling member 22, of the second pin rolling member 23, the second pin clamping member 43 is not in contact with the second mounting plate 25, one end, close to the fixed seat 30, of the second pin clamping member 43 protrudes from one end, close to the fixed seat 30, of the second mounting groove 232, and the other end protrudes from one end, far from the fixed seat 30, of the second mounting groove 232.

In this embodiment, the end of the first mounting plate 24 extending from the end of the first mounting groove 222 near the fixing base 30 is U-shaped, and the end of the second mounting plate 25 extending from the end of the second mounting groove 232 near the fixing base 30 is U-shaped. Two mounting positions are respectively arranged on the left side and the right side of the second end of the fixed seat 30, one end, which extends out from one end, which is close to the fixed seat 30, of the first mounting plate 24, one end, which extends out from one end, which is close to the fixed seat 50, of the second mounting plate 232, of the first mounting plate 24, one end, which extends out from one end, which is close to the fixed seat 50, of the second mounting plate 25, are respectively fixed in the corresponding mounting positions through fasteners such as screws, and two spring limiting plates 32 are respectively arranged on the left side and the right side of the fixed seat 30 at openings of the two mounting positions so as to limit the first mounting plate 24 and the second mounting plate 25. The second end of the fixing base 30 is provided with a connection position, and one end of the first pin clamping member 42 extending from one end of the first mounting groove 222 near the fixing base 30 and one end of the second pin clamping member 43 extending from one end of the second mounting groove 232 near the fixing base 30 are all arranged in the connection position.

In this embodiment, the first winding pin 22 can slide along the length direction of the first mounting plate 24 in a direction approaching or separating from the fixed seat 30, and the bottom of the first mounting groove 222 is a slope 222a, as shown in fig. 8 and 11, where the slope 222a is inclined toward the direction approaching the second winding pin 23, i.e. the distance from the slope 222a to the side of the second winding pin 23 approaching the first winding pin 22 gradually decreases along the direction from the end of the slope 222a approaching the fixed seat 30 to the end of the slope 222a far from the fixed seat 30, and the side of the first mounting plate 24 approaching the slope 222a (i.e. the left side of the first mounting plate 24) is provided with a mounting plate slope 24a matching with the slope 222a, as shown in fig. 8 and 13. The second winding pin 23 is fixed relative to the second mounting plate 25, and specifically, the second mounting plate 25 is fixedly disposed in the second mounting groove 232 by a fastener such as a screw or the like, so that the second winding pin 23 is fixed relative to the second mounting plate 25. Through this kind of structure, when first book needle spare 22 slides towards the direction that is close to fixing base 30, because inclined plane 222a is the direction slope that is close to second book needle spare 23, along with the slip of first book needle spare 22, the volume footpath of rolling needle 20 can increase, and when first book needle spare 22 slides towards the direction that is kept away from fixing base 30, along with the slip of first book needle spare 22, the volume footpath of rolling needle 20 can reduce, in practical application, can slide first book needle spare 22 to suitable position according to the dislocation condition of the battery cell utmost point ear that last coiling was finished, in order to adjust the volume footpath (i.e. the winding diameter) of rolling needle 20, so through changing the volume footpath of rolling needle 20, can realize adjusting the alignment degree of battery cell utmost point ear when coiling the next electric core of shaping, thereby reach the mesh of repairing positive battery cell utmost point ear dislocation, this embodiment can realize adjusting the volume footpath of rolling needle 20 through the slip of first book needle spare 22, do not need intervention such as manual work to unreel needle 20, time consuming is short, equipment efficiency and the labor efficiency has been reduced, the cost of electricity rejection rate has been reduced.

In an alternative, the inclined surface 222a is inclined toward the direction away from the second winding needle member 23, that is, the distance from the inclined surface 222a to the side of the second winding needle member 23 near the first winding needle member 22 increases gradually along the direction from the end of the inclined surface 222a near the fixing seat 30 to the end of the inclined surface 222a far from the fixing seat 30, the side of the first mounting plate 24 near the inclined surface 222a (that is, the left side of the first mounting plate 24) is provided with the mounting plate inclined surface 24a that mates with the inclined surface 222a, when the first winding needle member 22 slides toward the fixing seat 30, the winding diameter of the winding needle 20 decreases as the first winding needle member 22 slides toward the direction away from the fixing seat 30, and the winding diameter of the winding needle 20 increases as the first winding needle member 22 slides.

The inclined surface 222a has an inclination angle of 0.2-0.6 degrees, for example, the length of the first winding needle member 22 and the second winding needle member 23 is 120-250mm, and the winding diameter of the winding needle 20 can be adjusted by 0-5mm. The width of the pole piece is generally much smaller than the length of the first and second

needle winding members

22, 23. The inclination angle of the mounting plate inclined surface 24a corresponds to the inclination angle of the inclined surface 222 a.

Further, the needle body 100 also includes a self-locking assembly. The self-locking assembly includes a plurality of ball plungers 52, a T-block 53, and a ratchet plate 54. The ball plunger 52 is of conventional construction.

The side of the first mounting plate 24 near the inclined surface 222a (i.e., the left side of the first mounting plate 24) is provided with a through hole 242, and the length direction of the through hole 242 is the same as the length direction of the first mounting plate 24. The through hole 242 is located between the fixing base 30 and the first needle rolling member 22, a plurality of mounting holes 2422 are respectively formed in two side inner walls (i.e. an upper side inner wall and a lower side inner wall) of the through hole 242, a plurality of ball plungers 52 are respectively fixedly mounted in the plurality of mounting holes 2422, ball heads 524 of the plurality of ball plungers 52 respectively extend out of the corresponding mounting holes 2422 and into the through hole 242, nuts 522 are respectively mounted at non-ball ends of the plurality of ball plungers 52, and the nuts 522 are pressed to the upper side and the lower side of the first mounting plate 24 so as to lock the corresponding ball plungers 52 to the first mounting plate 24. The plurality of ball plungers 52 are evenly distributed. The T-block 53 is located on the side of the first mounting plate 24 adjacent to the inclined surface 222a (i.e., the left side of the first mounting plate 24), and a lateral portion 532 of the T-block 53 is fixedly provided to the end of the first winding needle 22 adjacent to the fixing base 30 by a fastener such as a screw or the like. The vertical portion 534 of the T-shaped block 53 corresponds to the through hole 242, the ratchet plate 54 is fixedly arranged on the vertical portion 534 of the T-shaped block 53 and is located in the through hole 242, a plurality of tooth portions 542 are respectively arranged on two sides of the ratchet plate 54, the tooth portions 542 are distributed at intervals, the extending direction of the tooth portions 542 is perpendicular to the length direction of the through hole 242, tooth grooves are formed between two adjacent tooth portions 542, the tooth grooves correspond to the ball heads 524 of the ball plunger 52, and the ball heads 524 of the ball plunger 52 are used for being engaged with the corresponding tooth grooves. In practical application, when the first rolling needle 22 slides towards the direction approaching or separating from the fixed seat 30, under the action of the spring in the ball plunger 52, the ball 524 of the ball plunger 52 is compressed by the teeth 542 and then is retracted, so that the ratchet plate 54 can move between the two ends of the through hole 242 under the driving of the first rolling needle 22, when the first rolling needle 22 stops sliding, the ratchet plate 54 stops moving, the ball 524 of the ball plunger 52 returns to the initial position under the action of the spring in the ball plunger 52 and can be engaged with the corresponding tooth slot thereof to clamp the ratchet plate 54, so as to lock the first rolling needle 22 and prevent the first rolling needle 22 from sliding.

The through hole 242 can limit the movement of the ratchet plate 54, and further limit the sliding of the first needle rolling member 22. When the ratchet plate 54 is positioned at one end of the through hole 242 close to the fixed seat 30, the rolling diameter of the rolling needle 20 is maximum, and when the ratchet plate 54 is positioned at one end of the through hole 242 far away from the fixed seat 30, the rolling diameter of the rolling needle 20 is minimum, and the first rolling needle piece 22 is flush with the second rolling needle piece 23. In this embodiment, the ratchet plate 54 is located at one end of the through hole 242 far away from the fixing seat 30, in which a part of the ball head 524 of the ball head plunger 52 is engaged with the corresponding tooth slot, and when the winding diameter of the winding needle 20 needs to be adjusted to correct the dislocation of the battery tab, the first winding needle member 22 can be slid to a proper position in the direction close to the fixing seat 30 according to the dislocation of the battery tab.

Preferably, the ratchet plate 54 is integrally formed with the T-block for ease of manufacture.

In this embodiment, the number of ball plungers 52 is ten, and there are five ball plungers 52 on the inner wall of each side of the through hole 242. When the ratchet plate 54 is positioned at one end of the through hole 242 far away from the fixed seat 30 or one end of the through hole 242 near the fixed seat 30, the inner wall of each side of the through hole 242 is respectively provided with three ball heads 524 of the ball head plungers 52 which are respectively engaged with corresponding tooth grooves. It will be appreciated that the number of ball plungers 52 may be set according to the actual situation.

Further, one side of the first mounting plate 24 near the inclined surface 222a (i.e. the left side of the first mounting plate 24) is provided with two steps 244 at positions corresponding to the through holes 242, the two steps 244 respectively correspond to two ends of the transverse portion 532 of the T-shaped block 53, and when the ratchet plate 54 is located at one end of the through hole 242 near the fixing base 30, the two ends of the transverse portion 532 of the T-shaped block 53 respectively abut against the two steps 244, so that the sliding of the first needle rolling member 22 can be limited.

Further, a friction plate 26 is provided between the inclined surface 222a and the mounting plate inclined surface 24a, and the friction plate 26 is fixedly provided to the mounting plate inclined surface 24a by a fastener such as a screw or the like. The friction plate 26 is provided to prevent the mounting plate inclined surface 24a of the first mounting plate 24 from being worn during the sliding of the first winding needle 22.

Further, a side of the first mounting plate 24 away from the inclined surface 222a (i.e., the right side of the first mounting plate 24) is provided with a mounting cavity 245, the length direction of the mounting cavity 245 is the same as the length direction of the first mounting plate 24, the mounting plate inclined surface 24a is provided with two through grooves 246 correspondingly communicated with the mounting cavity 245, and as shown in fig. 13, the length direction of the two through grooves 246 is the same as the length direction of the first mounting plate 24. The friction plate 26 is provided with two hole sites 262 correspondingly communicated with the two through grooves 246, the length direction of the two hole sites 262 is the same as the length direction of the friction plate 26, and the length and the width of the two hole sites 262 are larger than the length and the width of the two through grooves 246.

As shown in fig. 8, 9, 11 and 14, the winding needle body 100 further includes a roller assembly 60 that allows the first winding needle 22 to smoothly slide. The roller assembly 60 is disposed within the mounting cavity 245 and is fixedly coupled to the first needle roller 22.

Specifically, the roller assembly 60 includes a base plate 62, a connecting plate 63, two elastic members 64, a roller 65, and two guide rods 66 positioned in the mounting cavity 245. The bottom plate 62 is parallel arrangement with the connecting plate 63, and the connecting plate 63 is located between the bottom plate 62 and the bottom of installation cavity 245, and the both ends of bottom plate 62 and the both ends of connecting plate 63 are in the same place through two installation cover 624 fixed connection respectively, and specifically, the one end of two installation cover 624 is fixed the both ends that set up in the one side near connecting plate 63 of bottom plate 62 respectively, and the other end is fixed the setting respectively in two installation hole sites at connecting plate 63 both ends. Two guide rods 66 are disposed within the two mounting pockets 624, respectively, and the two guide rods 66 are secured to the base plate 62 by fasteners, such as screws or the like. The mounting ends of the two guide rods 66 protrude from one side of the connection plate 63 near the bottom of the mounting cavity 245, and the mounting ends of the two guide rods 66 pass through the two through grooves 246 and the two hole sites 262 and are fixedly arranged on the inclined surface 222a. Two mounting posts 622 are arranged on one side of the bottom plate 62, which is close to the connecting plate 63, and two elastic members 64 are respectively sleeved on the peripheries of the two mounting posts 622 and positioned between the connecting plate 63 and the bottom plate 62, wherein the two elastic members 64 are in a compressed state, and the elastic members 64 are preferably springs. The roller 65 is disposed in the groove 632 of the side of the connecting plate 63 near the bottom of the mounting cavity 245, and the roller 65 partially protrudes from the side of the connecting plate 63 near the bottom of the mounting cavity 245 and abuts against the bottom of the mounting cavity 245, and the roller 65 is located between the two elastic members 64. When the first winding needle 22 moves toward the direction approaching or separating from the fixed seat 30, the roller assembly 60 can move along the length direction of the mounting cavity 245 in the mounting cavity 245 under the driving of the first winding needle 22, and the two guide rods 66 can move between the two ends of the corresponding through slots 246.

The installation end of the guide rod 66 is fixedly arranged on the inclined plane 222a, so that the roller assembly 60 can move together with the first rolling needle member 22, the roller 65 is arranged to facilitate the sliding of the first rolling needle member 22, the sliding of the first rolling needle member 22 can be smooth, and the roller 65 can always move closely to the bottom of the installation cavity 245 under the action of the two elastic members 64 due to the fact that the two elastic members 64 are in a compressed state. The mounting cavity 245 provides room for movement of the roller assembly 60. The two through grooves 246 can limit the movement of the two guide rods 66, so that the first needle rolling piece 22 can be limited. When the ratchet plate 54 is located at one end of the through hole 242 near the fixed seat 30, i.e. the rolling diameter of the rolling needle 20 is maximum, the two guide rods 66 are respectively located at one ends of the two through grooves 246 near the fixed seat 30, and when the ratchet plate 54 is located at one end of the through hole 242 far away from the fixed seat 30, i.e. the rolling diameter of the rolling needle 20 is minimum, the two guide rods 66 are respectively located at one ends of the two through grooves 246 far away from the fixed seat 30.

In this embodiment, the inclined surface 222a is provided with a concave portion 2222 corresponding to the roller assembly 60, two mounting holes 2224 corresponding to the two guide rods 66 are provided at the bottom of the concave portion 2222, and the mounting ends of the two guide rods 66 are fixedly disposed in the two mounting holes 2224.

A spacer 662 is provided around the outer circumference of the guide 66, and the spacer 662 abuts the bottom of the recess 2222.

In this embodiment, the number of the roller assemblies 60 is two, the number of the corresponding mounting cavities 245 is two, the number of the through slots 246 is four, the number of the hole sites 262 is four, the number of the concave sites 2222 is two, and the number of the mounting holes 2224 is four. It is to be understood that the number of the roller assemblies 60 may be one, three, etc., and the number of the roller assemblies 60 may be set according to practical situations.

Further, one end of the first needle rolling member 22 near the fixed seat 30 is provided with a shift lever 224, the shift lever 224 is located below the first mounting plate 24 and is perpendicular to the first mounting plate 24, the shift lever 224 is parallel to the second needle rolling member 23, the first end of the shift lever 224 is close to the first mounting plate 24, the end face of the first end of the shift lever 224 is preferably flush with the inner wall of the lower side of the first mounting groove 222 (see fig. 10 and 11), and the second end of the shift lever 224 protrudes out of the first needle rolling member 22.

Further, as shown in fig. 2, 3, 15 and 16, the variable diameter winding needle mechanism further includes a shift fork assembly 300 in this embodiment. The fork assembly 300 is located under the winding needle body 100, and the fork assembly 300 includes a riser 302, a traverse plate 303, a fork 304 slidably disposed to one side of the riser 302, and a driving unit 305 fixedly disposed to one side of the riser 302 through an L-shaped connection block 3044 a. The cross plate 303 serves to fixedly provide to a fixing plate of the winding device so that the mounting of the fork assembly 300 can be accomplished. The risers 302 are fixedly secured to the cross plate 303. The shift fork 304 corresponds to the shift lever 224 of the first needle winding member 22, and a fork opening 3042 is formed at a top end of the shift fork 304, and the fork opening 3042 is used for clamping a second end of the shift lever 224 to limit sliding of the first needle winding member 22. The driving unit 305 is used to drive the fork 304 to move up and down. The driving unit 305 is preferably a cylinder, the cylinder shaft of which is connected to the L-shaped connection block 3044b, and the L-shaped connection block 3044b is fixedly provided to the fork 304.

The fork 304 is slidably disposed to one side of the riser 302, specifically: a slide rail 307 is provided at one side of the riser 302, a fork 304 is fixedly provided to the slide rail 306, the slide rail 306 is slidably provided to the slide rail 307, and the fork 304 is movable up and down on one side of the riser 302 by the slide rail 307 and the slide rail 306.

The second end of the lever 224 is bulbous to facilitate the forking of the fork 3042.

Through the above structure, when the tab of the battery cell wound and molded by the winding needle 20 is dislocated, after the winding needle body 100 returns to the initial position, as shown in fig. 1 and 3, the driving unit 305 drives the shifting fork 304 to move upwards, so that the fork 3042 forks the second end of the shifting lever 224, as shown in fig. 1 to 3, and then the moving driving assembly 200 drives the winding needle body 100 to move forwards to a proper position according to the dislocation, because the shifting lever 224 is forked, the first winding needle member 22 does not move forwards, the first mounting plate 24 moves forwards, the winding diameter of the winding needle 20 is increased at this time, thus the winding diameter of the winding needle 20 is adjusted, after the winding diameter of the winding needle 20 is adjusted, the driving unit 305 drives the shifting fork 304 to move downwards to the initial position, and then the following procedure is performed, thus the dislocation of the tab of the correction core is achieved.

The automatic adjustment of the winding diameter of the winding needle 20 can be realized through the arranged shifting fork assembly 300, the operation is simple, the time consumption is short, and the equipment efficiency and the utilization rate are further improved.

It will be appreciated that, in the actual operation process, the shift fork assembly 300 may be omitted, and the winding diameter of the winding needle 20 may be adjusted by manually pulling the shift lever 224, for example, when the tab of the battery core wound and formed by the winding needle 20 is dislocated, after the winding needle main body 100 returns to the initial position, as shown in fig. 1 and 3, the shift lever 224 is pulled in a direction approaching the fixing seat 30 according to the dislocation, so that the shift lever 224 may drive the first winding needle 22 to slide to a suitable position in a direction approaching the fixing seat 30, and the winding diameter of the winding needle 20 is increased, so that the winding diameter of the winding needle 20 is adjusted, and after the winding diameter of the winding needle 20 is adjusted, the following procedure is performed.

Second embodiment

Referring to fig. 17 to 21 and 23, the present embodiment is different from the first embodiment in that the first needle rolling member 22 is relatively fixed to the first mounting plate 24, specifically, the first mounting plate 24 is fixedly disposed in the first mounting groove 222 by a fastener such as a screw, so that the first needle rolling member 22 is relatively fixed to the first mounting plate 24. The second winding pin 23 can slide along the length direction of the second mounting plate 25 in a direction approaching or separating from the fixed seat 30, and the bottom of the second mounting groove 232 is an inclined surface 232a, as shown in fig. 21 and 24, the inclined surface 232a is inclined in a direction approaching the first winding pin 22, that is, the distance from the inclined surface 232a to the side of the first winding pin 22 approaching the second winding pin 23 is gradually reduced along the direction from one end of the inclined surface 232a approaching the fixed seat 30 to one end of the inclined surface 232a separating from the fixed seat 30. The side of the second mounting plate 25 near the inclined surface 232a (i.e., the right side of the second mounting plate 25) is provided with a mounting plate inclined surface 25a that mates with the inclined surface 232a, as shown in fig. 21, 25. Through this kind of structure, when second book needle spare 23 slides towards the direction that is close to fixing base 30, because inclined plane 232a is the direction slope that is close to first book needle spare 22, along with the slip of second book needle spare 23, the volume footpath of rolling needle 20 can increase, when second book needle spare 23 slides towards the direction that is kept away from fixing base 30, along with the slip of second book needle spare 23, the volume footpath of rolling needle 20 can reduce, in actual application, can slide second book needle spare 23 to suitable position according to the dislocation condition of the electric core tab that last coiling was formed, in order to adjust the volume footpath of rolling needle 20, so through changing the volume footpath of rolling needle 20, can realize adjusting the alignment degree of electric core tab when coiling the electric core of shaping next, thereby reach the mesh of repairing positive electric core tab dislocation, this embodiment can also realize adjusting the volume footpath of rolling needle 20 through the slip of second book needle spare 23, do not need manual work to unreel needle 20 etc. to intervene, it is short, equipment efficiency and labor-consuming rate has been promoted, the rejection rate of electric core has been reduced.

In an alternative, the inclined surface 232a is inclined toward the direction away from the first winding needle member 22, that is, the distance from the inclined surface 232a to the side of the first winding needle member 22 near the second winding needle member 23 increases gradually along the direction from the end of the inclined surface 232a near the fixing seat 30 to the end of the inclined surface 232a far from the fixing seat 30, the side of the second mounting plate 25 near the inclined surface 232a (that is, the right side of the second mounting plate 25) is provided with the mounting plate inclined surface 25a matching with the inclined surface 232a, when the second winding needle member 23 slides toward the fixing seat 30, since the inclined surface 232a is inclined toward the direction away from the first winding needle member 22, the winding diameter of the winding needle 20 decreases as the second winding needle member 23 slides toward the direction away from the fixing seat 30, and the winding diameter of the winding needle 20 increases as the second winding needle member 23 slides.

As shown in fig. 23, two hollowed-out portions 223 communicating with the first mounting groove 222 are provided on a side of the first winding needle member 22 close to the second winding needle member 23, so that the weight of the winding needle 20 can be reduced. The structure of the first winding needle member 22 of the present embodiment is the same as that of the second winding needle member 23 of the first embodiment, and the structure of the second winding needle member 23 of the present embodiment is the same as that of the first winding needle member 22 of the first embodiment.

The inclined surface 232a has an inclination angle of 0.2-0.6 degrees, for example, the length of the first winding needle member 22 and the second winding needle member 23 is 120-250mm, and the winding diameter of the winding needle 20 can be adjusted by 0-5mm. The width of the pole piece is generally much smaller than the length of the first and second

needle winding members

22, 23. The inclination angle of the mounting plate inclined surface 25a corresponds to the inclination angle of the inclined surface 232 a.

Further, the needle body 100 also includes a self-locking assembly. The structure of the self-locking assembly of this embodiment is the same as that of the first embodiment. The self-locking assembly includes a plurality of ball plungers 52, a T-block 53, and a ratchet plate 54.

The second mounting plate 25 is provided with a through hole 252 on a side close to the inclined surface 232a (i.e., on the right side of the second mounting plate 25), and the length direction of the through hole 252 is the same as the length direction of the second mounting plate 25. The through hole 252 is located between the fixing base 30 and the second needle rolling piece 23, a plurality of mounting holes 2522 are respectively formed in two side inner walls (i.e. an upper side inner wall and a lower side inner wall) of the through hole 252, a plurality of ball plungers 52 are respectively fixedly mounted in the plurality of mounting holes 2522, ball heads 524 of the plurality of ball plungers 52 respectively extend out of the corresponding mounting holes 2522 and into the through hole 252, nuts 522 are respectively mounted at non-ball ends of the plurality of ball plungers 52, and the nuts 522 are pressed to the upper side and the lower side of the second mounting plate 25 so as to lock the corresponding ball plungers 52 to the second mounting plate 25. The plurality of ball plungers 52 are evenly distributed. The T-shaped block 53 is located on the side of the second mounting plate 25 adjacent to the inclined surface 232a (i.e., the right side of the second mounting plate 25), and the lateral portion 532 of the T-shaped block 53 is fixedly provided to the end of the second winding pin 23 adjacent to the fixing base 30 by a fastener such as a screw or the like. The vertical portion 534 of the T-shaped block 53 corresponds to the through hole 252, the ratchet plate 54 is fixedly arranged on the vertical portion 534 of the T-shaped block 53 and is located in the through hole 252, a plurality of tooth portions 542 are respectively arranged on two sides of the ratchet plate 54, the tooth portions 542 are distributed at intervals, the extending direction of the tooth portions 542 is perpendicular to the length direction of the through hole 252, tooth grooves are formed between two adjacent tooth portions 542, the tooth grooves correspond to the ball heads 524 of the ball plunger 52, and the ball heads 524 of the ball plunger 52 are used for being clamped with the corresponding tooth grooves. In practical application, when the second rolling needle 23 slides towards the direction approaching or separating from the fixed seat 30, under the action of the spring in the ball plunger 52, the ball 524 of the ball plunger 52 is compressed by the teeth 542 and then is retracted, so that the ratchet plate 54 can move between the two ends of the through hole 252 under the driving of the second rolling needle 23, when the second rolling needle 23 stops sliding, the ratchet plate 54 stops moving, the ball 524 of the ball plunger 52 returns to the initial position under the action of the spring in the ball plunger 52 and can be engaged with the corresponding tooth slot thereof to clamp the ratchet plate 54, so as to lock the second rolling needle 23 and prevent the second rolling needle 23 from sliding.

The through hole 252 can limit the movement of the ratchet plate 54, and further limit the sliding of the second needle rolling member 23. When the ratchet plate 54 is positioned at one end of the through hole 252 near the fixed seat 30, the rolling diameter of the rolling needle 20 is maximum, and when the ratchet plate 54 is positioned at one end of the through hole 252 far away from the fixed seat 30, the rolling diameter of the rolling needle 20 is minimum, and the first rolling needle piece 22 is flush with the second rolling needle piece 23. In this embodiment, the ratchet plate 54 is located at one end of the through hole 252 far away from the fixing seat 30, in which a part of the ball head 524 of the ball head plunger 52 is engaged with the corresponding tooth slot, and when the winding diameter of the winding needle 20 needs to be adjusted to correct the dislocation of the battery tab, the second winding needle member 23 can be slid to a proper position in the direction close to the fixing seat 30 according to the dislocation of the battery tab.

Preferably, the ratchet plate 54 is integrally formed with the T-block 53 for ease of manufacture.

In this embodiment, the number of ball plungers 52 is ten, and there are five ball plungers 52 on the inner wall of each side of the through hole 252. When the ratchet plate 54 is positioned at one end of the through hole 242 far away from the fixed seat 30 or one end of the through hole 242 near the fixed seat 30, the inner wall of each side of the through hole 242 is respectively provided with three ball heads 524 of the ball head plungers 52 which are respectively engaged with corresponding tooth grooves. It will be appreciated that the number of ball plungers 52 may be set according to the actual situation.

Further, one side of the second mounting plate 25 near the inclined surface 232a (i.e. the right side of the second mounting plate 25) is provided with two steps 254 at positions corresponding to the through holes 252, the two steps 254 respectively correspond to two ends of the transverse portion 532 of the T-shaped block 53, and when the ratchet plate 54 is located at one end of the through hole 252 near the fixing base 30, the two ends of the transverse portion 532 of the T-shaped block 53 respectively abut against the two steps 254, so that the sliding of the second winding needle 23 can be limited.

Further, a friction plate 26 is provided between the inclined surface 232a and the mounting plate inclined surface 25a, and the friction plate 26 is fixedly provided to the mounting plate inclined surface 25a by a fastener such as a screw or the like. The friction plate 26 is provided to prevent the mounting plate inclined surface 25a of the second mounting plate 25 from being worn out during the sliding of the second winding needle 23.

Further, a mounting cavity 255 is provided on a side of the second mounting plate 25 away from the inclined surface 232a (i.e., a left side of the second mounting plate 25), a length direction of the mounting cavity 255 is the same as a length direction of the second mounting plate 25, as shown in fig. 21, 22 and 25, and the mounting plate inclined surface 25a is provided with two through grooves 256 corresponding to and communicating with the mounting cavity 255, as shown in fig. 21, 22 and 23, and a length direction of the two through grooves 256 is the same as a length direction of the second mounting plate 25. The friction plate 26 is provided with two hole sites 262 correspondingly communicated with the two through grooves 256, the length direction of the two hole sites 262 is the same as the length direction of the friction plate 26, and the length and the width of the two hole sites 262 are larger than the length and the width of the two through grooves 256.

As shown in fig. 21 to 23 and 14, the winding needle body 100 further includes a roller assembly 60 that allows the second winding needle 23 to slide smoothly. The roller assembly 60 of the present embodiment has the same structure as the roller assembly 60 of the first embodiment. The roller assembly 60 is disposed within the mounting cavity 255 and is fixedly coupled to the second needle roller 23.

Specifically, the roller assembly 60 includes a base plate 62, a connecting plate 63, two elastic members 64, a roller 65, and two guide rods 66 within a mounting cavity 255. The bottom plate 62 is parallel arrangement with the connecting plate 63, and the connecting plate 63 is located between the bottom plate 62 and the bottom of installation cavity 255, and the both ends of bottom plate 62 and the both ends of connecting plate 63 are in the same place through two installation cover 624 fixed connection respectively, and specifically, the one end of two installation cover 624 is fixed the both ends that set up in the one side near connecting plate 63 of bottom plate 62 respectively, and the other end is fixed the setting respectively in two installation hole sites at connecting plate 63 both ends. Two guide rods 66 are disposed within the two mounting pockets 624, respectively, and the two guide rods 66 are secured to the base plate 62 by fasteners, such as screws or the like. The mounting ends of the two guide rods 66 protrude from one side of the connection plate 63 near the bottom of the mounting cavity 255, and the mounting ends of the two guide rods 66 pass through the two through grooves 256 and the two hole sites 262 and are fixedly arranged on the inclined surface 232a. Two mounting posts 622 are arranged on one side of the bottom plate 62, which is close to the connecting plate 63, and two elastic members 64 are respectively sleeved on the peripheries of the two mounting posts 622 and positioned between the connecting plate 63 and the bottom plate 62, wherein the two elastic members 64 are in a compressed state, and the elastic members 64 are preferably springs. The roller 65 is disposed in a groove 632 on one side of the connection plate 63 near the bottom of the installation cavity 255, and the roller 65 partially protrudes from one side of the connection plate 63 near the bottom of the installation cavity 255 and abuts against the bottom of the installation cavity 255, and the roller 65 is disposed between the two elastic members 64. When the second winding pin 23 moves toward the direction approaching or separating from the fixed seat 30, the roller assembly 60 can move in the mounting cavity 255 along the length direction of the mounting cavity 255 under the driving of the second winding pin 23, and the two guide rods 66 can move between the two ends of the corresponding through slot 256.

The installation end of the guide rod 66 is fixedly arranged on the inclined plane 232a, so that the roller assembly 60 can move together with the second winding needle member 23, the roller 65 is arranged to facilitate the sliding of the second winding needle member 23, the sliding of the second winding needle member 23 can be smooth, and the roller 65 can always move closely to the bottom of the installation cavity 255 under the action of the two elastic members 64 due to the fact that the two elastic members 64 are in a compressed state. The mounting cavity 255 provides room for movement of the roller assembly 60. The two through grooves 256 can limit the movement of the two guide rods 66, so that the second winding needle 23 can be limited. When the ratchet plate 54 is located at one end of the through hole 252 near the fixed seat 30, i.e. the rolling diameter of the rolling needle 20 is maximum, the two guide rods 66 are respectively located at one ends of the two through grooves 256 near the fixed seat 30, and when the ratchet plate 54 is located at one end of the through hole 252 far away from the fixed seat 30, i.e. the rolling diameter of the rolling needle 20 is minimum, the two guide rods 66 are respectively located at one ends of the two through grooves 256 far away from the fixed seat 30.

In this embodiment, the inclined surface 232a is provided with a recess 2322 corresponding to the roller assembly 60, as shown in fig. 24, two mounting holes 2324 corresponding to the two guide rods 66 are provided at the bottom of the recess 2322, and the mounting ends of the two guide rods 66 are respectively fixedly disposed in the two mounting holes 2324.

A spacer 662 is provided around the outer circumference of the guide 66, and the spacer 662 abuts the bottom of the recess 2322.

In this embodiment, the number of the roller assemblies 60 is two, the number of the corresponding mounting cavities 255 is two, the number of the through slots 256 is four, the number of the hole sites 262 is four, the number of the concave sites 2322 is two, and the number of the mounting holes 2324 is four. It is to be understood that the number of the roller assemblies 60 may be one, three, etc., and the number of the roller assemblies 60 may be set according to practical situations.

Further, one end of the second needle rolling member 23 near the fixed seat 30 is provided with a shift lever 234, the shift lever 234 is located above the second mounting plate 25 and is perpendicular to the first mounting plate 25, the shift lever 234 is parallel to the first needle rolling member 22, the first end of the shift lever 234 is close to the second mounting plate 25, the end face of the first end of the shift lever 234 is preferably flush with the upper inner wall of the second mounting groove 232 (see fig. 24), and the second end of the shift lever 234 protrudes out of the second needle rolling member 23.

Further, in this embodiment, the variable diameter needle rolling mechanism further includes a shift fork assembly 300. The structure and the position of the fork assembly 300 in this embodiment are the same as those of the fork assembly 300 in the first embodiment, and will not be described again here.

The second end of the lever 234 is bulbous to facilitate the forking of the fork 3042.

Through the above structure, when the electrode tab of the battery core wound and molded by the winding needle 20 is dislocated, after the winding needle main body 100 returns to the initial position, as shown in fig. 17, the winding needle main body 100 is driven by the rotary driving assembly to integrally rotate 180 degrees, so that the second winding needle member 23 is located at the position of the first winding needle member 22, at this time, the deflector rod 234 of the second winding needle member 23 corresponds to the shift fork 304, the second end of the deflector rod 234 faces the shift fork 304, then the driving unit 305 drives the shift fork 304 to move upwards, so that the fork 3042 forks the second end of the deflector rod 234, then the winding needle main body 100 is driven by the moving driving assembly 200 to integrally move forward to a proper position according to the dislocation, and because the deflector rod 234 is forked, the second winding needle member 23 does not move forward, and the second mounting plate 25 moves forward, so that the winding diameter of the winding needle 20 is increased, after the winding diameter of the winding needle 20 is adjusted, the shift fork 304 moves downward to the initial position by the driving unit 305, then the whole body is driven by the rotary driving assembly to rotate 180 degrees, so that the electrode tab 23 returns to the initial position after the winding needle member is adjusted, and the electrode tab 23 is trimmed.

It will be appreciated that, in the actual operation process, the shift fork assembly 300 may be not used, but the winding diameter of the winding needle 20 may be adjusted by manually pulling the shift lever 234, for example, when the tab of the battery core wound and formed by the winding needle 20 is dislocated, after the winding needle main body 100 returns to the initial position, as shown in fig. 17, the shift lever 234 is pulled in a direction approaching to the fixing seat 30 according to the dislocation, so that the shift lever 234 may drive the second winding needle 23 to slide to a suitable position in a direction approaching to the fixing seat 30, at this time, the winding diameter of the winding needle 20 is increased, so that the winding diameter of the winding needle 20 is adjusted, and after the winding diameter of the winding needle 20 is adjusted, the subsequent process is performed.

Third embodiment

Referring to fig. 26 to 33, unlike the first embodiment, the first winding needle 22 can slide along the length direction of the first mounting plate 24 in a direction approaching or separating from the fixing seat 30, the bottom of the first mounting groove 222 is a first inclined surface 222a, and the first inclined surface 222a is inclined in a direction approaching the second winding needle 23, i.e. the distance from the first inclined surface 222a to the side of the second winding needle 23 approaching the first winding needle 22 gradually decreases along the direction from one end of the first inclined surface 222a approaching the fixing seat 30 to one end of the first inclined surface 222a separating from the fixing seat 30. The side of the first mounting plate 24 adjacent to the first inclined surface 222a (i.e., the left side of the first mounting plate 24) is provided with a first mounting plate inclined surface 24a that mates with the first inclined surface 222 a. The second winding pin 23 can slide along the length direction of the second mounting plate 25 towards the direction approaching or separating from the fixed seat 30, the bottom of the second mounting groove 232 is a second inclined surface 232a, and the second inclined surface 232a is inclined towards the direction approaching the first winding pin 22, that is, the distance from the second inclined surface 232a to the side of the first winding pin 22 approaching the second winding pin 23 is gradually reduced along the direction from one end of the second inclined surface 232a approaching the fixed seat 30 to one end of the second inclined surface 232a separating from the fixed seat 30. The side of the second mounting plate 25 adjacent to the second inclined surface 232a (i.e., the right side of the second mounting plate 25) is provided with the second mounting plate inclined surface 25a that mates with the second inclined surface 232 a. Through this kind of structure, when first book needle 22, second book needle 23 slides towards the direction that is close to fixing base 30, because first inclined plane 222a is the direction slope that is close to second book needle 23, second inclined plane 232a is the direction slope that is close to first book needle 22, along with first book needle 22, the roll diameter of second book needle 23 can increase, when first book needle 22, second book needle 23 slides towards the direction that is far away from fixing base 30, along with first book needle 22, the roll diameter of second book needle 23 can reduce, in practical application, can slide first book needle 22, second book needle 23 to suitable position according to the dislocation condition of last coiling finished electric core utmost point ear, so through changing the roll diameter of book needle 20, can realize adjusting electric core utmost point ear alignment degree when coiling shaping next electric core, thereby repair the time-consuming rate is reached to first book needle 22, the roll diameter of needle 20 is not adjusted to the first book needle 23 of implementing the same purpose, the manual work rate of inserting the needle 20 has been reduced, the manual work rate of inserting the needle is reduced, the rate of need of removing the needle is reduced, and the like.

The first winding pin 22 and the first mounting plate 24 of the present embodiment have the same structure as the first winding pin 22 and the first mounting plate 24 of the first embodiment, and the second winding pin 23 and the second mounting plate 25 have the same structure as the second winding pin 23 and the second mounting plate 25 of the second embodiment.

In an alternative, the first inclined surface 222a is inclined toward a direction away from the second needle rolling member 23, that is, a distance from the first inclined surface 222a to a side of the second needle rolling member 23 near the first needle rolling member 22 increases gradually along a direction from an end of the first inclined surface 222a near the fixing base 30 to an end of the first inclined surface 222a far from the fixing base 30, the second inclined surface 232a is inclined toward a direction away from the first needle rolling member 22, that is, a distance from the second inclined surface 232a to a side of the first needle rolling member 22 near the second needle rolling member 23 increases gradually along a direction from an end of the second inclined surface 232a near the fixing base 30 to an end of the second inclined surface 232a far from the fixing base 30, a side of the first mounting plate 24 near the first inclined surface 222a (that is, a left side of the first mounting plate 24) is provided with a inclined surface of the first mounting plate 24a mating with the first inclined surface 222a, and a side of the second mounting plate 25 near the second inclined surface 232a (that is right side of the second mounting plate 25) is provided with a second inclined surface 25a mating with the second inclined surface 232 a. When the first rolling needle member 22 and the second rolling needle member 23 slide in the direction approaching the fixed seat 30, the rolling diameter of the rolling needle 20 is reduced along with the sliding of the first rolling needle member 22 and the second rolling needle member 23, and when the first rolling needle member 22 and the second rolling needle member 23 slide in the direction approaching the fixed seat 30, the rolling diameter of the rolling needle 20 is increased along with the sliding of the first rolling needle member 22 and the second rolling needle member 23, and the rolling diameter of the rolling needle 20 is adjusted by the structure because the first inclined surface 222a is inclined in the direction approaching the second rolling needle member 23 and the second inclined surface 232a is moved in the direction approaching the first rolling needle member 22.

The inclination angles of the first inclined surface 222a and the second inclined surface 232a are all 0.2-0.6 degrees, for example, the lengths of the first winding needle piece 22 and the second winding needle piece 23 are 120-250mm, and the winding diameter of the winding needle 20 can be adjusted by 0-10mm. The width of the pole piece is generally much smaller than the length of the first and second

needle winding members

22, 23. The inclination angles of the first mounting plate inclined surface 24a and the second mounting plate inclined surface 25a correspond to the inclination angles of the first inclined surface 222a and the second inclined surface 232 a.

Further, the winding needle body 100 further includes a first self-locking assembly and a second self-locking assembly. The structure of the first self-locking assembly and the structure of the second self-locking assembly are the same as those of the self-locking assembly of the first embodiment.

The first self-locking assembly includes a plurality of first ball plungers 52a, a first T-block 53a, and a first ratchet plate 54a. The first ball plunger 52a is of conventional construction.

The side of the first mounting plate 24 near the first inclined surface 222a (i.e., the left side of the first mounting plate 24) is provided with a first through hole 242, the length direction of the first through hole 242 is the same as the length direction of the first mounting plate 24, the first through hole 242 is located between the fixing seat 30 and the first needle rolling piece 22, two side inner walls (i.e., an upper side inner wall and a lower side inner wall) of the first through hole 242 are respectively provided with a plurality of first mounting holes 2422, a plurality of first ball plungers 52a are respectively fixedly mounted in the plurality of first mounting holes 2422, the balls 524a of the plurality of first ball plungers 52a respectively extend out of the corresponding first mounting holes 2422 and into the first through hole 242, the non-ball ends of the plurality of first ball plungers 52a are respectively provided with first nuts 522a, and the first nuts 522a are pressed on the upper side and the lower side of the first mounting plate 24 so as to lock the corresponding first ball plungers 52a to the first mounting plate 24. The plurality of first ball plungers 52a are uniformly distributed. The first T-block 53a is located on a side of the first mounting plate 24 adjacent to the first inclined surface 222a (i.e., a left side of the first mounting plate 24), and a lateral portion 532a of the first T-block 53a is fixedly provided to an end of the first winding needle 22 adjacent to the fixing base 30 by a fastener such as a screw or the like. The vertical portion 534a of the first T-shaped block 53a corresponds to the first through hole 242, the first ratchet plate 54a is fixedly arranged on the vertical portion 534a of the first T-shaped block 53a and is located in the first through hole 242, a plurality of first tooth portions 542a are respectively arranged on two surfaces of the first ratchet plate 54a, the plurality of first tooth portions 542a are distributed at intervals, the extending direction of the first tooth portions 542a is perpendicular to the length direction of the first through hole 242, a first tooth groove is formed between two adjacent first tooth portions 542a, and the first tooth groove corresponds to the ball head 524a of the first ball plunger 52 a. The ball 524a of the first ball plunger 52a is configured to engage the corresponding first tooth 542 a. In practical application, when the first needle rolling member 22 slides in a direction approaching or separating from the fixed seat 30, under the action of the spring in the first ball plunger 52a, the ball head 524a of the first ball plunger 52a is pressed by the first tooth 542a and then contracts inwards, so that the first ratchet plate 54a can move between two ends of the first through hole 242 under the driving of the first needle rolling member 22, when the first needle rolling member 22 stops sliding, the first ratchet plate 54a stops moving, and the ball head 524a of the first ball plunger 52a returns to the initial position under the action of the spring in the first ball plunger 52a and can be clamped with the corresponding first tooth slot thereof to clamp the first ratchet plate 54a, so as to lock the first needle rolling member 22 and prevent the first needle rolling member 22 from sliding.

The second self-locking assembly includes a plurality of second ball plungers 52b, a second T-block 53b, and a second ratchet plate 54b. The second ball plunger 52b is of conventional construction.

The second mounting plate 25 is provided with a second through hole 252 on one side (i.e. the right side of the second mounting plate 25) close to the second inclined surface 232a, the length direction of the second through hole 252 is the same as that of the second mounting plate 25, the second through hole 252 is located between the fixing seat 30 and the second needle rolling piece 23, two side inner walls (i.e. the upper side inner wall and the lower side inner wall) of the second through hole 252 are respectively provided with a plurality of second mounting holes 2522, a plurality of second ball plungers 52b are respectively fixedly mounted in the plurality of second mounting holes 2522, the balls 524b of the plurality of second ball plungers 52b respectively extend out of the corresponding second mounting holes 2522 and extend into the second through hole 252, the non-ball ends of the plurality of second ball plungers 52b are respectively provided with a second nut 522b, and the second nut 522b is pressed on the upper side and the lower side of the second mounting plate 25 so as to lock the corresponding second ball plungers 52b to the second mounting plate 25. The plurality of second ball plungers 52b are uniformly distributed. The second T-block 53b is located on a side of the second mounting plate 25 adjacent to the second inclined surface 232a (i.e., a right side of the second mounting plate 25), and a lateral portion 532b of the second T-block 53b is fixedly provided to an end of the second winding pin 23 adjacent to the fixing base 30 by a fastener such as a screw or the like. The vertical portion 534b of the second T-shaped block 53b corresponds to the second through hole 252, the second ratchet plate 54b is fixedly arranged on the vertical portion 534b of the second T-shaped block 53b and is located in the second through hole 252, a plurality of second tooth portions 542b are respectively arranged on two surfaces of the second ratchet plate 54b, the second tooth portions 542b are distributed at intervals, the extending direction of the second tooth portions 542b is perpendicular to the length direction of the second through hole 252, a second tooth groove is formed between two adjacent second tooth portions 542b, and the second tooth groove corresponds to the ball head 524b of the second ball plunger 52 b. The ball 524b of the second ball plunger 52b is configured to engage the corresponding second tooth 542 b. In practical application, when the second needle rolling member 23 slides in a direction approaching or separating from the fixed seat 30, under the action of the spring in the second ball plunger 52b, the ball 524b of the second ball plunger 52b is pressed by the second tooth 542b and then contracts inwards, so that the second ratchet plate 54b can move between the two ends of the second through hole 252 under the driving of the second needle rolling member 23, when the second needle rolling member 23 stops sliding, the second ratchet plate 54b stops moving, and the ball 524b of the second ball plunger 52b returns to the initial position under the action of the spring in the second ball plunger 52b and can be engaged with the corresponding second tooth slot thereof to lock the second ratchet plate 54b, so as to lock the second needle rolling member 23 and prevent the second needle rolling member 23 from sliding.

The first through hole 242 and the second through hole 252 can limit the movement of the first ratchet plate 54a and the second ratchet plate 54b, and further limit the sliding of the first winding needle 22 and the second winding needle 23. When the first ratchet plate 54a is located at one end of the first through hole 242 near the fixing base 30 and the second ratchet plate 54b is located at one end of the second through hole 252 near the fixing base 30, the rolling diameter of the rolling needle 20 is maximum, and when the first ratchet plate 54a is located at one end of the first through hole 242 far from the fixing base 30 and the second ratchet plate 54b is located at one end of the second through hole 252 far from the fixing base 30, the rolling diameter of the rolling needle 20 is minimum, and the first rolling needle piece 22 is flush with the second rolling needle piece 23. In this embodiment, the first ratchet plate 54a is located at one end of the first through hole 242 far away from the fixing seat 30, the second ratchet plate 54b is located at one end of the second through hole 252 far away from the fixing seat 30, wherein a part of the ball 524a of the first ball plunger 52a is engaged with the corresponding first tooth slot, a part of the ball 524b of the second ball plunger 52b is engaged with the corresponding second tooth slot, and when the winding diameter of the winding needle 20 needs to be adjusted to correct the dislocation of the battery lugs, the first winding needle member 22 and the second winding needle member 23 can be slid to the appropriate positions in the direction approaching to the fixing seat 30 according to the dislocation of the battery lugs.

Preferably, the first ratchet plate 54a is integrally formed with the first T-shaped block 53a, and the second ratchet plate 54b is integrally formed with the second T-shaped block 53b, for ease of manufacture.

In this embodiment, the number of the first ball plungers 52a and the second ball plungers 52b is ten, the inner wall of each side of the first through hole 242 is provided with five first ball plungers 52a, and the inner wall of each side of the second through hole 252 is provided with five second ball plungers 52b. When the first ratchet plate 54a is located at one end of the first through hole 242 far from the fixed seat 30 or at one end of the first through hole 242 near the fixed seat 30, the inner wall of each side of the first through hole 242 is respectively provided with three balls 524a of the first ball plunger 52a which are respectively engaged with corresponding first tooth grooves, and when the second ratchet plate 54b is located at one end of the second through hole 252 far from the fixed seat 30 or at one end of the second through hole 252 near the fixed seat 30, the inner wall of each side of the second through hole 252 is respectively provided with three balls 524b of the second ball plunger 52b which are respectively engaged with corresponding second tooth grooves. It is understood that the number of the first ball plungers 52a and the second ball plungers 52b may be set according to actual situations.

Further, one side of the first mounting plate 24 near the first inclined surface 222a (i.e. the left side of the first mounting plate 24) is provided with two first steps 244 at positions corresponding to the first through holes 242, the two first steps 244 respectively correspond to two ends of the transverse portion 532a of the first T-shaped block 53a, and when the first ratchet plate 54a is located at one end of the first through hole 242 near the fixing seat 30, the two ends of the transverse portion 534a of the first T-shaped block 53a respectively abut against the two first steps 244, so that the sliding of the first needle rolling member 22 can be limited.

One side of the second mounting plate 25 near the second inclined surface 232a (i.e., the right side of the second mounting plate 25) is provided with two second steps at positions corresponding to the second through holes 252, the two second steps respectively correspond to two ends of the transverse portion 532b of the second T-shaped block 53b, and when the second ratchet plate 54b is located at one end of the second through holes 252 near the fixing base 30, the two ends of the transverse portion 532b of the second T-shaped block 53b respectively abut against the two second steps, so that sliding of the second needle rolling member 23 can be limited.

Further, a first friction plate 26a is provided between the first inclined surface 222a and the first mounting plate inclined surface 24a, and the first friction plate 26a is fixedly provided to the first mounting plate inclined surface 24a by a fastener such as a screw or the like. The first friction plate 26a is provided to prevent the first mounting plate slope 24a of the first mounting plate 24 from being worn.

A second friction plate 26b is provided between the second inclined surface 232a and the second mounting plate inclined surface 25a, and the second friction plate 26b is fixedly provided to the second mounting plate inclined surface 25a by a fastener such as a screw or the like. The second friction plate 26b is provided to prevent the second mounting plate inclined surface 25a of the second mounting plate 25 from being worn.

Further, a side of the first mounting plate 24 far away from the first inclined surface 222a (i.e. the right side of the first mounting plate 24) is provided with a first mounting cavity 245, the length direction of the first mounting cavity 245 is the same as the length direction of the first mounting plate 24, the first mounting plate inclined surface 24a is provided with two first through grooves 246 correspondingly communicated with the first mounting cavity 245, and the length directions of the two first through grooves 246 are the same as the length direction of the first mounting plate 24. The first friction plate 26a is provided with two first hole sites 262a correspondingly communicated with the two first through grooves 246, the length direction of the two first hole sites 262a is the same as the length direction of the first friction plate 26a, and the length and the width of the two first hole sites 262a are larger than those of the two first through grooves 246.

The side of the second mounting plate 25 away from the second inclined surface 232a (i.e., the left side of the second mounting plate 25) is provided with a second mounting cavity 255, the length direction of the second mounting cavity 255 is the same as the length direction of the second mounting plate 25, the second mounting plate inclined surface 25a is provided with two second through grooves 256 correspondingly communicated with the second mounting cavity 255, and the length directions of the two second through grooves 256 are the same as the length direction of the second mounting plate 25. The second friction plate 26b is provided with two second hole sites 262b correspondingly communicated with the two second through grooves 256, the length direction of the two second hole sites 262b is the same as the length direction of the second friction plate 26b, and the length and the width of the two second hole sites 262b are larger than those of the two second through grooves 256.

The winding needle body 100 further includes a first roller assembly 60a for smoothly sliding the first winding needle 22 and a second roller assembly 60b for smoothly sliding the second winding needle 23. The structure of the first roller assembly 60a and the structure of the second roller assembly 60b are the same as those of the roller assembly 60 of the first embodiment. The first roller assembly 60a is disposed in the first mounting chamber 245 and is fixedly coupled to the first needle roller 22. The second needle roller 60b is disposed within the second mounting cavity 255 and is fixedly coupled to the second needle roller 23.

Specifically, the first roller assembly 60a includes a first bottom plate 62a, a first connection plate 63a, two first elastic members 64a, a first roller 65a, and two first guide rods 66a disposed in the first mounting chamber 245. The first bottom plate 62a is parallel to the first connecting plate 63a, the first connecting plate 63a is located between the first bottom plate 62a and the bottom of the first mounting cavity 245, two ends of the first bottom plate 62a and two ends of the first connecting plate 63a are respectively and fixedly connected together through two first mounting sleeves 624a, specifically, one ends of the two first mounting sleeves 624a are respectively and fixedly arranged at two ends of one side, close to the first connecting plate 63a, of the first bottom plate 62a, and the other ends of the two first mounting sleeves are respectively and fixedly arranged in two first mounting hole positions at two ends of the first connecting plate 63 a. Two first guide rods 66a are respectively disposed within the two first mounting pockets 624a, and the two first guide rods 66a are secured together with the first base plate 62a by fasteners, such as screws or the like. The mounting ends of the two first guide rods 66a protrude from one side of the first connecting plate 63a near the bottom of the first mounting cavity 245, and the mounting ends of the two first guide rods 66a pass through the two first through grooves 246, the two first hole sites 262a and are fixedly arranged on the first inclined surface 222a. Two first mounting posts 622a are arranged on one side of the first bottom plate 62a, which is close to the first connecting plate 63a, and two first elastic members 64a are respectively sleeved on the peripheries of the two first mounting posts 622a and are located between the first connecting plate 63a and the first bottom plate 62a, wherein the two first elastic members 64a are in a compressed state, and the first elastic members 64a are preferably springs. The first roller 65a is disposed in a groove of the first connecting plate 63a on a side near the bottom of the first mounting cavity 245, and the first roller 65a partially protrudes from a side of the first connecting plate 63a near the bottom of the first mounting cavity 245 and abuts against the bottom of the first mounting cavity 245, and the first roller 65a is located between the two first elastic members 64 a. When the first winding needle 22 moves toward the direction approaching or separating from the fixed seat 30, the first roller assembly 60a can be driven by the first winding needle 22 to move along the length direction of the first mounting cavity 245 in the first mounting cavity 245, and the two first guide rods 66a can move between the two ends of the corresponding first through slots 246.

The mounting end of the first guide rod 66a is fixedly arranged on the first inclined plane 222a, so that the first roller assembly 60a can move together with the first rolling needle 22, the first roller 65a is arranged to facilitate the sliding of the first rolling needle 22, the sliding of the first rolling needle 22 can be smooth, and the first roller 65a can always move closely to the bottom of the first mounting cavity 245 under the action of the two first elastic pieces 64a due to the fact that the two first elastic pieces 64a are in a compressed state. The first mounting chamber 245 provides space for movement of the first roller assembly 60 a. The two first through grooves 246 can limit the movement of the two first guide rods 66a, so that the first needle rolling piece 22 can be limited. When the first ratchet plate 54a is located at one end of the first through hole 242 near the fixed seat 30, i.e. the rolling diameter of the rolling needle 20 is maximum, the two first guide rods 66a are respectively located at one ends of the two first through grooves 246 near the fixed seat 30, and when the first ratchet plate 54a is located at one end of the first through hole 242 far away from the fixed seat 30, i.e. the rolling diameter of the rolling needle 20 is minimum, the two first guide rods 66a are respectively located at one ends of the two first through grooves 246 far away from the fixed seat 30.

The second roller assembly 60b includes a second bottom plate 62b, a second connection plate 63b, two second elastic members 64b, a second roller 65b, and two second guide rods 66b positioned in the second mounting chamber 255. The second bottom plate 62b and the second connecting plate 63b are arranged in parallel, the second connecting plate 63b is located between the bottom of the second bottom plate 62b and the bottom of the second mounting cavity 255, two ends of the second bottom plate 62b and two ends of the second connecting plate 63b are respectively and fixedly connected together through two second mounting sleeves 624b, specifically, one ends of the two second mounting sleeves 624b are respectively and fixedly arranged at two ends of one side, close to the second connecting plate 63b, of the second bottom plate 62b, and the other ends of the two second mounting sleeves are respectively and fixedly arranged in two second mounting hole positions at two ends of the second connecting plate 63 b. Two second guide rods 66b are respectively disposed within the two second mounting pockets 624b, and the two second guide rods 66b are secured together with the second base plate 62b by fasteners, such as screws or the like. The mounting ends of the two second guide rods 66b protrude from one side of the second connection plate 63b near the bottom of the second mounting cavity 255, and the mounting ends of the two second guide rods 66b pass through the two second through grooves 256, the two second hole sites 262b, and are fixedly arranged on the second inclined surface 232a. Two second mounting posts 622b are arranged on one side of the second bottom plate 62b, which is close to the second connecting plate 63b, and two second elastic members 64b are respectively sleeved on the peripheries of the two second mounting posts 622b and are positioned between the second connecting plate 63b and the second bottom plate 62b, wherein the two second elastic members 64b are in a compressed state, and the second elastic members 64b are preferably springs. The second roller 65b is disposed in a groove of one side of the second connection plate 63b near the bottom of the second installation cavity 255, and a portion of the second roller 65b protrudes out of one side of the second connection plate 63b near the bottom of the second installation cavity 255 and abuts against the bottom of the second installation cavity 255, and the second roller 65b is located between the two second elastic members 64 b. When the second winding needle 23 moves in a direction approaching or separating from the fixed seat 30, the second roller assembly 60b can be driven by the second winding needle 23 to move along the length direction of the second mounting cavity 255 in the second mounting cavity 255, and the two second guide rods 66b can move between two ends of the corresponding second through slots 256.

The mounting end of the second guide rod 66b is fixedly arranged on the second inclined plane 232a, so that the second roller assembly 60b can move together with the second rolling needle member 23, the second roller 65b is arranged to facilitate the sliding of the second rolling needle member 23, the sliding of the second rolling needle member 23 can be smooth, and the second roller 65b can always move closely to the bottom of the second mounting cavity 255 under the action of the two second elastic members 64b due to the compression state of the two second elastic members 64 b. The second mounting chamber 255 provides space for movement of the second roller assembly 60 b. The two second through grooves 256 can limit the movement of the two second guide rods 66b, so that the second needle rolling piece 23 can be limited. When the second ratchet plate 54b is located at one end of the second through hole 252 near the fixed seat 30, i.e. the rolling diameter of the rolling needle 20 is maximum, the two second guide rods 66b are respectively located at one ends of the two second through grooves 256 near the fixed seat 30, and when the second ratchet plate 54b is located at one end of the second through hole 252 far from the fixed seat 30, i.e. the rolling diameter of the rolling needle 20 is minimum, the two second guide rods 66b are respectively located at one ends of the two second through grooves 256 far from the fixed seat 30.

In this embodiment, the first inclined surface 222a is provided with a first concave portion 2222 corresponding to the first roller assembly 60a, two first mounting holes 2224 corresponding to the two first guide rods 66a are provided at the bottom of the first concave portion 2222, and the mounting ends of the two first guide rods 66a are respectively and fixedly disposed in the two first mounting holes 2224.

The outer circumference of the first guide rod 66a is sleeved with a first gasket 662a, and the first gasket 662a abuts against the bottom of the first concave portion 2222.

The second inclined surface 232a is provided with a second concave position 2322 corresponding to the second roller assembly 60b, the bottom of the second concave position 2322 is provided with two second mounting holes 2324 corresponding to the two second guide rods 66b respectively, and the mounting ends of the two second guide rods 66b are fixedly arranged in the two second mounting holes 2324 respectively.

The second guide 66b has a second spacer 662b sleeved around its outer circumference, the second spacer 662b abutting the bottom of the second recess 2322.

In this embodiment, the number of the first roller assemblies 66a is two, the corresponding number of the first mounting cavities 245 is two, the number of the first through slots 246 is four, the number of the first hole sites 262a is four, the number of the first concave sites 2222 is two, and the number of the first mounting holes 2224 is four. It is to be understood that the number of the first roller assemblies 60a may be plural, for example, one, three, etc., and the number of the first roller assemblies 60a may be set according to practical situations.

Two second roller assemblies 60b are provided, corresponding to two second mounting cavities 255, four second through slots 256, four second hole sites 262b, two second concave sites 2322 and four second mounting holes 2324. It is to be understood that the number of the second roller assemblies 60b may be plural, for example, one, three, etc., and the number of the second roller assemblies 60b may be set according to practical situations.

Further, a first driving lever 224 is disposed at one end of the first needle rolling member 22 near the fixed seat 30, the first driving lever 224 is located below the first mounting plate 24 and is perpendicular to the first mounting plate 24, the first driving lever 224 is disposed parallel to the second needle rolling member 23, the first end of the first driving lever 224 is close to the first mounting plate 24, the first end face of the first driving lever 224 is preferably flush with the inner wall of the lower side of the first mounting groove 222, and the second end of the first driving lever 224 protrudes out of the first needle rolling member 22.

The second driving lever 234 is arranged at one end of the second winding needle piece 23, which is close to the fixed seat 30, the second driving lever 234 is arranged above the second mounting plate 25 and is perpendicular to the second mounting plate 25, the second driving lever 234 is arranged in parallel with the first winding needle piece 22, the first end of the second driving lever 234 is close to the second mounting plate 25, the end face of the first end of the second driving lever 234 is preferably flush with the inner wall of the upper side of the second mounting groove 232, and the second end of the second driving lever 234 protrudes out of the second winding needle piece 23.

Further, in this embodiment, the variable diameter needle rolling mechanism further includes a shift fork assembly 300. The structure and position of the fork assembly 300 in this embodiment are the same as those of the fork assembly 30 in the first embodiment, and will not be described again here.

The second end of the first lever 224 and the second end of the second lever 234 are spherical, so that the fork opening 3042 of the fork 304 can be conveniently clamped.

Through the structure, when the electrode lugs of the battery core wound and molded through the winding needle 20 are misplaced, after the winding needle main body 100 returns to the initial position, as shown in fig. 26, the shifting fork 304 is driven by the driving unit 305 to move upwards, so that the fork opening 3042 is forked on the second end of the first shifting rod 224, as shown in fig. 26, then the winding needle main body 100 is driven by the moving driving component 200 to move forwards to a proper position according to the misplacement, as the first shifting rod 224 is forked on, the first winding needle 22 cannot move forwards, the first mounting plate 24 moves forwards, then the shifting fork 304 is driven by the driving unit 305 to move downwards to the initial position, then the winding needle main body 100 is driven by the moving driving component 200 to move backwards to the initial position, then the winding needle main body 100 is driven by the rotating driving component 200 to rotate 180 degrees, so that the second winding needle 23 is positioned at the initial position of the first winding needle main body 22, at this moment, the second rod 234 corresponds to the shifting fork 304 and the second end of the second shifting fork 234 faces the shifting fork 304, then the shifting fork 304 moves upwards through the driving unit to move upwards, so that the fork opening 3042 is forked on the second shifting rod 304, the second winding needle main body 2 cannot move forwards, as the second winding needle main body 20 is driven by the moving component 200, thus, the second winding needle main body 20 can move forwards, namely, the winding needle main body 20 can be adjusted to move forwards, and the axial direction can be adjusted.

It will be appreciated that, in the actual operation process, the first shift lever 224 and the second shift lever 234 may be manually pulled to adjust the winding diameter of the winding needle 20 instead of the shift lever 300, for example, when the tab of the battery core wound and formed by the winding needle 20 is dislocated, after the winding needle main body 100 returns to the initial position, as shown in fig. 26, the first shift lever 224 and the second shift lever 234 are pulled in a direction approaching the fixing seat 30 according to the dislocation, so that the first winding needle member 22 and the second winding needle member 23 can be driven by the first shift lever 224 and the second shift lever 234 to slide to the appropriate positions in a direction approaching the fixing seat 30, and the winding diameter of the winding needle 20 is increased at this time, so that the winding diameter of the winding needle 20 can be adjusted, and after the winding diameter adjustment of the winding needle 20, the following procedure is performed.

In one alternative, the number of fork assemblies 300 is two, and two fork assemblies 300 are respectively located above and below the winding needle body 100. The fork assembly 300 located below the needle winding body 100 has a fork 304 corresponding to the first lever 224, a fork opening 3042 of the fork 304 is used for forking a second end of the first lever 224 to limit the sliding of the first needle winding member 22, and the fork assembly 300 located above the needle winding body 100 has a fork 304 corresponding to the second lever 234, and a fork opening 3042 of the fork 304 is used for forking a second end of the second lever 234 to limit the sliding of the second needle winding member 23.

When the electrode tab of the battery core wound and molded by the winding needle 20 is dislocated, after the winding needle main body 100 returns to the initial position, as shown in fig. 26, the driving unit 305 below the winding needle main body 100 drives the shifting fork 304 below the winding needle main body 100 to move upwards, so that the fork opening 3042 of the shifting fork 304 forks the second end of the first shifting lever 224, the driving unit 305 above the winding needle main body 100 drives the shifting fork 304 above the winding needle main body 100 to move downwards, so that the fork opening 3042 of the shifting fork 304 forks the second end of the second shifting lever 234, and then the winding needle main body 100 is driven to move forwards to a proper position by moving the driving assembly 200 according to the dislocation, and the first winding needle member 22 and the second winding needle member 23 cannot move forwards, and the first mounting plate 24 and the second mounting plate 25 move forwards, so that the winding diameter of the winding needle 20 is adjusted, and then the winding needle main body 20 can move downwards by the shifting fork 304 below the winding needle main body 100 after the winding needle main body 100 is adjusted, and then the winding needle main body 100 is driven to move upwards by the driving unit 305, so that the winding needle main body 100 can be repaired.

While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims

1. The utility model provides a variable diameter needle rolling mechanism, includes needle rolling main part, is used for driving the removal drive assembly of needle rolling main part back and forth movement and be used for driving needle rolling main part pivoted rotary drive assembly, needle rolling main part includes winding axle subassembly, needle rolling and is located the fixing base between winding axle subassembly and the needle rolling, the winding axle subassembly is fixed to the first end of fixing base, the needle rolling is including being two needle rolling spare that set up relatively, two needle rolling spare are close to each other one side be equipped with two axial mounting grooves respectively, be equipped with the mounting panel in the mounting groove, the one end of mounting panel stretches out from the one end that is close to the fixing base of mounting groove and is fixed to the second end of fixing base, its characterized in that,

one of the two rolling needle pieces can slide along the length direction of the corresponding mounting plate in a direction approaching to or separating from the fixed seat, and the other rolling needle piece is relatively fixed with the corresponding mounting plate; the bottom of the mounting groove of the needle rolling piece which can slide towards the direction close to or far from the fixed seat is an inclined surface, the mounting plate corresponding to the needle rolling piece which can slide towards the direction close to or far from the fixed seat is provided with a mounting plate inclined surface matched with the inclined surface, and one side of the mounting plate adjacent to the inclined surface is provided with a mounting plate inclined surface matched with the inclined surface.

2. The variable diameter winding needle mechanism according to claim 1, wherein the two winding needle members are a first winding needle member and a second winding needle member respectively, the mounting plate corresponding to the first winding needle member is a first mounting plate, the mounting plate corresponding to the second winding needle member is a second mounting plate, the mounting groove of the first winding needle member is a first mounting groove, and the mounting groove of the second winding needle member is a second mounting groove; the first winding needle piece can slide along the length direction of the first mounting plate corresponding to the first winding needle piece in a direction approaching to or far from the fixed seat, and the second winding needle piece is relatively fixed with the second mounting plate corresponding to the second winding needle piece; the bottom of the first mounting groove is an inclined plane, and one side of the first mounting plate, which is close to the inclined plane, is provided with a mounting plate inclined plane matched with the inclined plane.

3. The variable diameter needle winding mechanism of claim 2, wherein the bevel is inclined toward the direction toward the second needle winding member or inclined toward the direction away from the second needle winding member.

4. The variable-diameter needle rolling mechanism according to claim 2, wherein a deflector rod is arranged at one end of the first needle rolling piece, which is close to the fixed seat, the deflector rod is perpendicular to the first mounting plate, the first end of the deflector rod is close to the first mounting plate, and the second end of the deflector rod protrudes out of the first needle rolling piece.

5. The variable-diameter needle winding mechanism according to claim 2, wherein the needle winding main body further comprises a self-locking assembly, the self-locking assembly comprises a plurality of ball plungers, a T-shaped block and a ratchet plate, one side of the first mounting plate, which is close to the inclined surface, is provided with a through hole, the length direction of the through hole is identical to that of the first mounting plate, the through hole is located between the fixing seat and the first needle winding member, two side inner walls of the through hole are respectively provided with a plurality of mounting holes, the ball plungers are respectively and fixedly mounted in the mounting holes, the ball heads of the ball plungers respectively extend into the through hole, the T-shaped block is fixedly arranged at one end, close to the fixing seat, of the first needle winding member, the ratchet plate is fixedly arranged on the T-shaped block and located in the through hole, two sides of the ratchet plate are respectively provided with a plurality of tooth parts, the extending direction of the ball heads of the tooth parts is perpendicular to the length direction of the through hole, two adjacent tooth parts are formed between the tooth grooves, the tooth grooves correspond to the ball heads, and the tooth grooves of the ball heads correspond to the ball heads are used for clamping the corresponding plungers.

6. The variable diameter needle winding mechanism according to claim 2, wherein a mounting cavity is arranged on one side of the first mounting plate far away from the inclined plane, the length direction of the mounting cavity is the same as that of the first mounting plate, the needle winding main body further comprises a roller assembly capable of enabling the first needle winding piece to slide stably, the roller assembly is arranged in the mounting cavity and is fixedly connected with the first needle winding piece, and the roller assembly can be driven to move in the mounting cavity by sliding of the first needle winding piece.

7. The variable diameter needle winding mechanism according to claim 4, further comprising a fork assembly located below the needle winding body, the fork assembly comprising a riser, a fork slidably disposed to one side of the riser, and a driving unit fixedly disposed to one side of the riser, a top end of the fork having a fork opening for forking a second end of the lever to restrict sliding of the first needle winding member, the driving unit for driving the fork to move up and down.

8. The variable diameter winding needle mechanism according to claim 1, wherein the two winding needle members are a first winding needle member and a second winding needle member respectively, the mounting plate corresponding to the first winding needle member is a first mounting plate, the mounting plate corresponding to the second winding needle member is a second mounting plate, the mounting groove of the first winding needle member is a first mounting groove, and the mounting groove of the second winding needle member is a second mounting groove; the second winding needle piece can slide along the length direction of the second mounting plate corresponding to the second winding needle piece in a direction approaching to or far from the fixed seat, and the first winding needle piece and the first mounting plate corresponding to the first winding needle piece are relatively fixed; the bottom of the second mounting groove is an inclined plane, and one side of the second mounting plate, which is close to the inclined plane, is provided with a mounting plate inclined plane matched with the inclined plane.

9. The variable diameter needle roller mechanism of claim 8, wherein the bevel is inclined toward the direction toward the first needle roller or inclined away from the first needle roller.

10. The variable diameter needle winding mechanism of claim 2 or 8, wherein the bevel is inclined at an angle of 0.2-0.6 degrees.

11. The variable diameter winding needle mechanism according to claim 2 or 8, wherein a friction plate is provided between the inclined surface and the mounting plate inclined surface, the friction plate being fixedly provided to the mounting plate inclined surface.

12. The utility model provides a variable diameter needle rolling mechanism, includes the needle rolling main part, is used for driving the removal drive assembly that the needle rolling main part reciprocated and is used for driving the needle rolling main part pivoted rotary drive assembly, the needle rolling main part includes winding axle subassembly, needle and is located the fixing base between winding axle subassembly and the needle, the fixed first end that sets up of winding axle subassembly to the fixing base, the needle rolling includes two needle rolling parts that are relative setting, two needle rolling parts are first needle rolling part and second needle rolling part respectively, the one side that first needle rolling part and second needle rolling part are close to each other is equipped with axial first mounting groove, second mounting groove respectively, be equipped with first mounting plate in the first mounting groove, the one end of first mounting plate stretches out from the one end that is close to the fixing base of first mounting groove and is fixed to the second end of fixing base, be equipped with the second mounting plate in the second mounting groove, the one end of second mounting plate stretches out from the one end that is close to the fixing base of second mounting groove and is fixed to the second end of fixing base, characterized in that,

The first needle rolling piece can slide along the length direction of the first mounting plate towards the direction close to or far away from the fixed seat, the bottom of the first mounting groove is a first inclined plane, one side of the first mounting plate close to the first inclined plane is provided with a first mounting plate inclined plane matched with the first inclined plane, the second needle rolling piece can slide along the length direction of the second mounting plate towards the direction close to or far away from the fixed seat, the bottom of the second mounting groove is a second inclined plane, and one side of the second mounting plate close to the second inclined plane is provided with a second mounting plate inclined plane matched with the second inclined plane.

13. The variable diameter needle winding mechanism of claim 12, wherein the first bevel is inclined toward the direction of approaching the second needle winding member or toward the direction of separating the second needle winding member, and the second bevel is inclined toward the direction of approaching the first needle winding member or toward the direction of separating the first needle winding member.

14. The variable diameter needle winding mechanism of claim 12, wherein the first and second inclined surfaces each have an inclination angle of 0.2-0.6 degrees.

15. The variable-diameter needle rolling mechanism according to claim 12, wherein a first deflector rod is arranged at one end of the first needle rolling piece, which is close to the fixed seat, the first deflector rod is perpendicular to the first mounting plate, a first end of the first deflector rod is close to the first mounting plate, a second end of the first deflector rod protrudes out of the first needle rolling piece, a second deflector rod is arranged at one end of the second needle rolling piece, which is close to the fixed seat, the second deflector rod is perpendicular to the second mounting plate, a first end of the second deflector rod is close to the second mounting plate, and a second end of the second deflector rod protrudes out of the second needle rolling piece.

16. The variable diameter needle roller mechanism of claim 15, further comprising a fork assembly located below the needle roller body, the fork assembly comprising a riser, a fork slidably disposed to one side of the riser, and a drive unit fixedly disposed to one side of the riser, a top end of the fork having a fork opening for forking over a second end of the first lever to limit sliding of the first needle roller or for forking over a second end of the second lever to limit sliding of the second needle roller, the drive unit for driving the fork up and down.

17. The variable diameter needle winding mechanism according to claim 15, further comprising two fork assemblies respectively located above and below the needle winding body, the fork assemblies including a riser, a fork slidably disposed to one side of the riser, and a driving unit fixedly disposed to one side of the riser, a top end of the fork having a fork opening, wherein the fork opening of the fork assembly located below the needle winding body is used for forking a second end of the first lever to restrict sliding of the first needle winding member, and the fork opening of the fork assembly located above the needle winding body is used for forking a second end of the second lever to restrict sliding of the second needle winding member, and the driving unit is used for driving the fork to move up and down.