CN211017276U

CN211017276U - Integral pole piece traction device and square power electric core winding machine

Info

Publication number: CN211017276U
Application number: CN201922490294.1U
Authority: CN
Inventors: 曹海霞; 黎红宁; 罗俊辉; 张晓潮
Original assignee: Zhuhai Higrand Technology Co Ltd
Current assignee: Zhuhai Higrand Technology Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-07-14
Anticipated expiration: 2029-12-30

Abstract

The utility model provides an integral pole piece traction device and square power core winder, integral pole piece traction device includes the mounting bracket, including the supporting part, the supporting part includes integrated into one piece's first body and two first support arms, is provided with first mounting hole on the first support arm, is equipped with first bearing subassembly in the first mounting hole; the traction assembly comprises a traction roller and a rotating shaft which are integrally formed, and two ends of the rotating shaft are respectively connected with the two groups of first bearing assemblies; the first driving unit drives the rotating shaft to rotate; the second driving unit is arranged on the first body, the output end of the second driving unit is provided with a connecting frame, the connecting frame is provided with a connecting shaft parallel to the rotating shaft, a pressing assembly is arranged on the connecting shaft and comprises a pressing wheel coaxially arranged with the connecting shaft, the pressing wheel can rotate relative to the connecting frame, and the second driving unit drives the connecting frame to move towards the traction roller. And the square power electric core winder, the integral pole piece traction device and the square power electric core winder have the advantages of high traction precision and accurate traction on pole pieces.

Description

Integral pole piece traction device and square power electric core winding machine

Technical Field

The utility model belongs to the technical field of battery production facility technique and specifically relates to a square power electricity core winder that relates to an integral pole piece draw gear and be provided with this integral pole piece draw gear.

Background

The lithium ion battery is widely applied to a plurality of technical fields such as notebook computers, electric tools, vehicles, digital products, solar photovoltaic and wind power generation energy storage systems, and is a novel environment-friendly battery with high capacity and long service life. At present, the winding of the battery core of the lithium ion battery is mainly performed by a battery core winding machine, and comprises the processing steps of unwinding a pole piece and a diaphragm, drawing the pole piece, correcting the deviation of the pole piece, winding and cutting the pole piece and the diaphragm, gluing the battery core wound by a winding head and the like. The traction processing of the pole piece is executed by a traction device, but the existing traction device has the following defects:

first, the mounting bracket of the conventional traction device is a split structure, that is, is assembled by a plurality of components, and although this structure can simplify the processing technology of the components to a certain extent, it still results in the need to finish the matching surfaces between the components to ensure the assembly precision and reliability between the components, so that the processing cost is high.

Secondly, although the assembly precision between the parts can be improved by performing finish machining on the matching surfaces, the position tolerance between the parts can be increased along with the increase of the intermediate connecting parts and is difficult to reduce, so that when other assembly parts are installed on the installation frame, a larger position tolerance can exist between the assembly part and the installation frame, the traction effect of the traction device is influenced, and the dragged pole piece is easy to tear and deviate.

Thirdly, the mounting frame is formed by assembling a plurality of parts, so that after the traction device works for a long time, position deviation is easily caused among the parts due to looseness of fasteners (such as bolts), the pole piece is easily pulled to be deviated when being pulled, the alignment degree of the wound battery cell is not up to standard, and even subsequent winding cannot be carried out; or the drawn pole piece can not reach the set length, so that the wound battery core is not in accordance with the requirement.

Fourthly, the traction roller and the rotating shaft of the existing traction device keep synchronous rotation through a connecting key, so that a transmission gap exists between the rotating shaft and the traction roller, and the traction precision of the traction device is influenced to a certain extent.

Disclosure of Invention

In order to solve the problem, the utility model aims at providing a pull integral pole piece draw gear that the precision is high, to the pole piece pull accuracy and be convenient for installation and debugging.

Another object of the utility model is to provide a square power electric core winder who is provided with above-mentioned integral pole piece draw gear.

In order to realize the main object of the utility model, the utility model provides an integral pole piece traction device, which comprises a mounting frame, a traction assembly, a first driving unit and a second driving unit, wherein the mounting frame comprises a supporting part, the supporting part comprises a first body and two first supporting arms, the two first supporting arms are symmetrically arranged on the first body, first mounting holes are arranged on the first supporting arms, first bearing assemblies are arranged in the first mounting holes, the first mounting holes of the two first supporting arms are coaxially arranged, the first body and the two first supporting arms are integrally formed, the traction assembly comprises a traction roller and a rotating shaft, the traction roller and the rotating shaft are integrally formed, two ends of the rotating shaft are respectively connected with the two groups of first bearing assemblies, the output end of the first driving unit is connected with one end of the rotating shaft, the first driving unit drives the rotating shaft to rotate around the axis of the first driving unit, the second driving unit is arranged on the first body, the output end of the second driving unit is provided with a connecting frame, a connecting shaft parallel to the rotating shaft is arranged on the connecting frame, at least one group of pressing assemblies are arranged on the connecting shaft, each pressing assembly comprises a pressing wheel coaxially arranged with the connecting shaft, the pressing wheel can rotate around the axis of the pressing wheel relative to the connecting frame, and the second driving unit drives the connecting frame to move towards the traction roller.

It is from top to bottom visible, set the mounting bracket into integral type structure for each installation position on the mounting bracket, the relative position precision between the mounting hole improves greatly, and can reduce the position tolerance that forms between installing the mounting bracket back and the mounting bracket of other assembly parts, in addition, can also eliminate current split type mounting bracket and appear loose problem easily after using a period, guarantee integral pole piece draw gear's traction effect, reduce the probability that the pole piece was dragged partially. And the traction assembly is arranged into an integrated structure, so that the transmission gap between the traction roller and the rotating shaft can be effectively eliminated, and the traction precision of the integrated pole piece traction device is improved.

The connecting frame comprises a second body and two second support arms, the second body is fixedly connected with the output end of the second driving unit, the two second support arms are symmetrically arranged on the second body, the second body and the two second support arms are integrally formed, and two ends of the connecting shaft are respectively connected with the two second support arms.

It is from top to bottom visible, because the link is connected with the second drive unit for receive vibrations in its working process for a long time, consequently, set the link into the integral type structure, can avoid the link to appear self loose structure's problem after using a period, and the link of integral type can also improve the assembly precision of connecting axle, thereby further improvement integral pole piece draw gear draw the precision, prevent that the pole piece from being dragged the in-process and being dragged partially.

The further proposal is that a second mounting hole is arranged on the second support arm; two ends of the connecting shaft are fixedly arranged in the two second mounting holes respectively, the pinch roller is rotatably arranged on the connecting shaft around the axis of the pinch roller, or the second mounting holes are internally provided with second bearing assemblies, two ends of the connecting shaft are connected with the two groups of second bearing assemblies respectively, and the pinch roller is relatively fixed with the connecting shaft in the rotating direction of the connecting shaft.

Therefore, the connection relation between the connecting shaft and the connecting frame and the connection relation between the connecting shaft and the pressing wheel can be changed adaptively according to actual processing requirements, so that the traction precision of the integral pole piece traction device is ensured, the risk of the pole piece being pulled to be deviated is reduced, and the use flexibility of the integral pole piece traction device is improved.

Another preferred scheme is that the connecting shaft is fixedly arranged on the connecting frame, the pressing assembly further comprises a bearing and two fixing rings, an inner ring of the bearing is sleeved on the connecting shaft, the pressing wheel is fixedly sleeved on an outer ring of the bearing, the bearing is connected with the connecting shaft in a sliding mode along the axial direction of the connecting shaft, the two fixing rings are fixedly sleeved on the connecting shaft, and the two fixing rings are respectively abutted to two ends of the bearing.

It is thus clear that through the structural design to compressing tightly the subassembly for compress tightly the relative position between subassembly and the connecting axle and have the adjustability, thereby make integral pole piece draw gear can be applicable to the pole piece of different width and pull, still make simultaneously to compress tightly the position that the subassembly can adjust self according to factors such as pole piece structure, size, position pulled, guarantee integral pole piece draw gear to the reliability that the pole piece was pull.

The further scheme is that the number of the pressing assemblies is two.

Therefore, the number of the pressing assemblies can be adjusted according to the structure and the size of the pole piece, and the reliability of the integral pole piece traction device for pole piece traction is guaranteed.

Another preferred scheme is that first drive unit includes servo motor, and servo motor's motor shaft is connected with the one end of pivot, and second drive unit is the cylinder, and the cylinder body of cylinder is installed on first body, the body of rod and the link fixed connection of cylinder.

Therefore, the servo motor can accurately control the speed and position precision, and the encoder of the servo motor can acquire the traction length of the integral pole piece traction device and feed back the traction length to a control system connected with the integral pole piece traction device, so that the control system can monitor the integral pole piece traction device in real time.

The first driving unit further comprises a coupler, and the coupler is connected between a motor shaft and a rotating shaft of the servo motor.

It is from top to bottom visible, adopt the shaft coupling to carry out lug connection with servo motor and pivot as drive mechanism, can enough solve among the prior art and adopt other mechanisms such as hold-in range when as drive mechanism the bulky problem of pole piece draw gear that brings, make integral pole piece draw gear's assembly and debugging more convenient again, in addition, regard as drive mechanism still better reduction transmission clearance with the shaft coupling, improve a drive unit's drive accuracy, thereby improve integral pole piece draw gear's the precision of pulling.

According to a further scheme, the integral pole piece traction device further comprises a button, the button is installed on the supporting portion and linked with the second driving unit, and the button controls the second driving unit to drive the connecting frame to move back to the traction roller.

It is from top to bottom visible, the setting up of button makes integral pole piece draw gear more convenient when carrying out the pole piece and wear the area, still is convenient for debug integral pole piece draw gear simultaneously.

The mounting frame further comprises a connecting part, a connecting hole is formed in the connecting part, and the connecting part and the supporting part are integrally formed.

It is from top to bottom visible, connecting portion are used for integral pole piece draw gear to be connected with external mechanism or frame, and the setting of connecting portion can avoid setting up the connecting hole on the supporting part, has improved the intensity of supporting part. And can enough improve the position accuracy between the two with connecting portion and supporting part integrated into one piece, can improve the assembly accuracy between mounting bracket and external mechanism or frame again, can also avoid the loose problem of self structure to appear in the working process mounting bracket.

In order to realize the utility model discloses a further purpose, the utility model provides a square power electricity core winder, including pole piece unwinding device and coiling head, pole piece unwinding device is to coiling head pay-off, and wherein, square power electricity core winder still includes foretell integral pole piece draw gear, along pole piece unwinding device's pay-off direction, integral pole piece draw gear is located between pole piece unwinding device and the coiling head.

Therefore, the square power electric core winding machine provided with the integral pole piece traction device has the advantages of high traction precision and accurate traction of the pole pieces.

Drawings

Fig. 1 is a structural diagram of an embodiment of the integrated pole piece traction device of the present invention.

Figure 2 is the structure diagram of the mounting bracket of the integral pole piece traction device of the utility model.

Figure 3 is the structure diagram of the traction assembly of the embodiment of the integrated pole piece traction device of the present invention.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

Integral pole piece draw gear embodiment:

referring to fig. 1, the integrated pole piece traction device 100 includes a mounting bracket 1, a traction assembly 2, a first drive unit 3, a second drive unit 4, and a button 5.

Referring to fig. 2, the mounting bracket 1 is a unitary structure, and specifically, the mounting bracket 1 includes a support portion 11 and a connection portion 12. The support portion 11 includes a first body 111 and two first arms 112, the two first arms 112 are symmetrically disposed on the first body 111, and the two first arms 112 and the first body 111 are integrally formed. The supporting portion 11 is integrally formed, so that the position accuracy between the first body 111 and the two first arms 112 can be ensured, the position accuracy between each mounting position and each mounting hole on the supporting portion 11 can be improved, and the position tolerance formed between the traction assembly 2 and the mounting frame 1 after being mounted on the supporting portion 11 can be reduced. In addition, the supporting part 11 of integral type overcomes the shortcoming that the existing split type mounting bracket 1 is loose in structure due to receiving vibration, and can also ensure the traction effect of the integral pole piece traction device 100, and reduce the probability of being dragged by the pole piece to be deviated.

The first support arms 112 are provided with first mounting holes 113, and the first mounting holes 113 of the two first support arms 112 are coaxially arranged, so that the mounting accuracy and the position accuracy of the traction assembly 2 after being mounted in the first mounting holes 113 are ensured. Because the supporting portion 11 is designed in an integrated manner, the accuracy of the relative position between the two first mounting holes 113 on the two first support arms 112 can be well guaranteed, so that the assembly accuracy between the mounting frame 1 and the traction assembly 2 can be effectively improved, and the traction accuracy of the integrated pole piece traction device 100 is guaranteed. Further, a set of first bearing assemblies 114 are disposed within each of the first mounting holes 113.

The connecting portion 12 is provided with a connecting hole for installation, and the connecting portion 12 is used for connecting the mounting frame 1 with an external mechanism or a rack of a square power electric core winding machine, so that the need of providing the connecting hole on the supporting portion 11 is avoided, and the strength of the supporting portion 11 is improved. In addition, connecting portion 12 and supporting part 11 integrated into one piece for mounting bracket 1 is the integral type design, thereby can enough improve the position precision between connecting portion 12 and the supporting part 11, can improve mounting bracket 1 and external mechanism's cooperation precision again, makes integral pole piece draw gear 100's installation and debugging more convenient, and moreover, the mounting bracket 1 of integral type can also avoid appearing the loose problem of structure in the course of the work self.

Referring to fig. 3, the drawing assembly 2 includes a drawing roller 21 and a rotating shaft 22, wherein the drawing roller 21 and the rotating shaft 22 are integrally formed, so as to effectively eliminate a transmission gap between the drawing roller 21 and the rotating shaft 22, and improve the drawing accuracy of the integral pole piece drawing device 100.

The two ends of the rotating shaft 22 are respectively connected with the two sets of first bearing assemblies 114, specifically, the first bearing assemblies 114 include bearing seats and bearings, the bearing seats are fixedly installed on the first installation holes 113, the outer rings of the bearings are embedded in the bearing seats, and the bearings and the first installation holes 113 are arranged in a collinear manner. The inner race of the bearing is fixedly sleeved on the shaft 22 so that the shaft 22 can rotate relative to the mounting bracket 1 through the first bearing assembly 114.

The output end of the first driving unit 3 is connected to the first end of the rotating shaft 22, and the first driving unit 3 is used for driving the rotating shaft 22 to rotate around its axis, but in this embodiment, the first driving unit 3 preferably comprises a servo motor 31 and a coupler 32, wherein the coupler 32 is connected between the motor shaft of the servo motor 31 and the rotating shaft 22. Because the servo motor 31 controls the speed and the position precision accurately and is provided with an encoder, the servo motor 31 is used as a driving source of the first driving unit 3, so that the integral pole piece traction device 100 can have high traction precision, the change period of the servo motor 31 can acquire the traction length of the integral pole piece traction device 100 in real time and feed back information to a control system connected with the integral pole piece traction device 100, and the control system can monitor the integral pole piece traction device 100 in real time.

In addition, the coupler 32 is used as a transmission mechanism to directly connect the servo motor 31 and the rotating shaft 22, so that the problem of large size of the pole piece traction device caused by using other mechanisms such as a synchronous belt as the transmission mechanism in the prior art can be solved, and the assembly and debugging of the integral pole piece traction device 100 are more convenient. Moreover, the coupling 32 is used as a transmission mechanism to further reduce transmission clearance and improve the driving precision of the first driving unit 3, so that the traction precision of the integral pole piece traction device 100 is improved.

The second driving unit 4 is mounted on the first body 111, and in the present embodiment, the second driving unit 4 is preferably an air cylinder. The connecting frame 41 is fixedly connected to the rod body of the air cylinder, the connecting frame 41 is located between the first body 111 and the traction roller 21, the connecting frame 41 is arranged on a connecting shaft 42 parallel to the rotating shaft 22, and at least one group of pressing components 43 is arranged on the connecting shaft 42.

The pressing assembly 43 comprises a pressing wheel 431 coaxially arranged with the connecting shaft 42, the pressing wheel 431 can rotate around the axis of the pressing wheel 431 relative to the connecting frame 41, and the air cylinder drives the connecting frame 41 to move towards the traction roller 21 along a straight line, so that the pressing wheel 431 on the connecting shaft 42 is pressed on the traction roller 21. The second driving unit 4 may be a combination of an electric push rod, an oil cylinder, a motor, and a ball screw, a combination of a driving source and a link, or the like, while ensuring the functional function of the second driving unit 4.

Preferably, the connecting frame 41 includes the second body 411 and two second support arms 412, the second body 411 and two second support arms 412 are integrally formed, because the connecting frame 41 is connected with the second driving unit 4, so that the connecting frame is vibrated for a long time in the working process, therefore, the connecting frame 41 is set into an integrated structure, the problem that the structure of the connecting frame 41 is loose after the connecting frame 41 is used for a period of time can be avoided, and the integrated connecting frame 41 can also improve the assembly precision of the connecting shaft 42, so that the traction precision of the integrated pole piece traction device 100 is further improved, and the pole piece is prevented from being dragged and deviated in the traction process.

The second arm 412 is provided with second mounting holes, and as an alternative, two ends of the connecting shaft 42 are respectively and fixedly mounted in the two second mounting holes, and the pressing wheel 431 is rotatably disposed on the connecting shaft 42 around its own axis. Specifically, the pressing assembly 43 further includes a bearing 432 and two fixing rings 433, wherein an inner ring of the bearing 432 is sleeved on the connecting shaft 42, the bearing 432 can slide relative to the connecting shaft 42 along the axial direction of the connecting shaft 42, and the pressing wheel 431 is fixedly sleeved on an outer ring of the bearing 432. The bearing 432 is arranged to slide relative to the connecting shaft 42, so that the position of the pressing assembly 43 is adjustable, the integral pole piece traction device 100 can be suitable for pole piece traction of different widths, meanwhile, the pressing assembly 43 can adjust the position of the pressing assembly according to factors such as the structure, the size and the position of the pulled pole piece, and the reliability of the integral pole piece traction device 100 in pole piece traction is ensured. Two solid fixed rings 433 are fixed the suit on connecting axle 42, and two solid fixed rings 433 abut on with the both ends of bearing 432 respectively, and solid fixed ring 433 is used for restricting the slip of bearing 432 to guarantee to compress tightly subassembly 43 and fix motionless relatively connecting axle 42 under non-adjusting state, thereby prevent that the pole piece that is hauled from being dragged partially.

As another alternative, second bearing assemblies are disposed in the second mounting holes, and two ends of the connecting shaft 42 are respectively connected to two sets of second bearing assemblies, wherein the pressing wheel 431 is fixed relative to the connecting shaft 42 in the rotation direction of the connecting shaft 42, that is, when the connecting shaft 42 rotates, the pressing wheel 431 is stationary relative to the connecting shaft 42, and the position of the pressing wheel 431 is still adjustable relative to the connecting shaft 42 in the axial direction of the connecting shaft 42.

In this embodiment, the number of the pressing assemblies 43 is two, and the number of the pressing assemblies 43 can be adjusted according to the structure and size of the pole piece, so as to ensure the reliability of the integral pole piece traction device 100 in pole piece traction.

Button 5 is installed on supporting part 11, and button 5 is used for linking with drive second drive unit 4, can control second drive unit 4 drive link 41 through button 5 promptly and remove carry out carry-over pinch rolls 21 dorsad, and through setting up button 5 for integral pole piece draw gear 100 is more convenient when carrying out the pole piece and wearing the area, can also be convenient for debug integral pole piece draw gear 100 simultaneously.

The operation of the integrated pole piece traction device 100 is explained as follows:

when the integral pole piece traction device 100 needs to be threaded with a pole piece, the second driving unit 4 can drive the connecting frame 41 to move back to the traction roller 21 by pressing the button 5, so that the pressing wheel 431 is separated from the traction roller 21. Then, the pole piece is inserted into the pole piece channel formed between the drawing roller 21 and the pressing roller 431, and then the second driving unit 4 drives the connecting frame 41 to move towards the drawing roller 21, so that the pressing roller 431 presses the pole piece on the drawing roller 21.

When the pole pieces need to be pulled, the control system sends a first control signal to the first driving unit 3, so that the first driving unit 3 drives the rotating shaft 22 to rotate, the pulling roller 21 is matched with the pressing wheel 431 to pull the pole pieces to move, and feeding is achieved.

When the first driving unit 3 drives the rotating shaft 22 to rotate and reaches the set threshold, the control system sends a second control signal to the first driving unit 3, so that the first driving unit 3 stops driving the rotating shaft 22 to rotate, one fixed-length feeding is completed, and the next control signal is waited.

To sum up, the utility model provides an integral pole piece draw gear has the advantage of drawing the precision height, drawing the accuracy and being convenient for installation and debugging to the pole piece.

Square power electrical core winder embodiment:

the square power electric core winder comprises a pole piece unwinding device, a winding head and an integral pole piece traction device. The pole piece unreeling device is used for conveying pole pieces to a reeling machine, and the integral pole piece traction device is located between the pole piece unreeling device and the reeling head along the feeding direction of the pole piece unreeling device. The integral pole piece traction device is the integral pole piece traction device in the embodiment of the integral pole piece traction device. The square power electric core winding machine provided with the integral pole piece traction device has the advantages of high traction precision and accurate traction on pole pieces.

Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.

Claims

1. Integral pole piece draw gear, its characterized in that includes:

the mounting frame comprises a supporting part, the supporting part comprises a first body and two first support arms, the two first support arms are symmetrically arranged on the first body, first mounting holes are formed in the first support arms, first bearing assemblies are arranged in the first mounting holes, the two first mounting holes are arranged coaxially, and the first body and the two first support arms are integrally formed;

the traction assembly comprises a traction roller and a rotating shaft, the traction roller and the rotating shaft are integrally formed, and two ends of the rotating shaft are respectively connected with the two groups of first bearing assemblies;

the output end of the first driving unit is connected with one end of the rotating shaft, and the first driving unit drives the rotating shaft to rotate around the axis of the rotating shaft;

the second driving unit is installed on the first body, a connecting frame is arranged at the output end of the second driving unit, a connecting shaft parallel to the rotating shaft is arranged on the connecting frame, at least one group of pressing assemblies are arranged on the connecting shaft, each pressing assembly comprises a pressing wheel coaxially arranged with the connecting shaft, the pressing wheels can rotate relative to the connecting frame around the axis of the pressing wheel, and the second driving unit drives the connecting frame to move towards the traction roller.

2. The integrated pole piece draft gear according to claim 1, wherein:

the link includes:

the second body is fixedly connected with the output end of the second driving unit;

the two second support arms are symmetrically arranged on the second body, the second body and the two second support arms are integrally formed, and two ends of the connecting shaft are connected with the two second support arms respectively.

3. The integrated pole piece draft gear according to claim 2, wherein:

a second mounting hole is formed in the second support arm;

two ends of the connecting shaft are respectively and fixedly arranged in the two second mounting holes, and the pinch roller is rotatably arranged on the connecting shaft around the axis of the pinch roller or

And second bearing assemblies are arranged in the second mounting holes, two ends of the connecting shaft are respectively connected with the two groups of second bearing assemblies, and the pressing wheel is relatively fixed with the connecting shaft in the rotating direction of the connecting shaft.

4. The integrated pole piece draft gear according to claim 1, wherein:

the connecting shaft is fixedly arranged on the connecting frame;

the compression assembly further comprises:

the inner ring of the bearing is sleeved on the connecting shaft, the pinch roller is fixedly sleeved on the outer ring of the bearing, and the bearing is connected with the connecting shaft in a sliding manner along the axial direction of the connecting shaft;

and the two fixing rings are fixedly sleeved on the connecting shaft and are respectively abutted with two ends of the bearing.

5. The integrated pole piece draft gear according to claim 4, wherein:

the number of the pressing assemblies is two.

6. The integrated pole piece draft gear according to claim 1, wherein:

the first driving unit comprises a servo motor, and a motor shaft of the servo motor is connected with one end of the rotating shaft;

the second driving unit is an air cylinder, a cylinder body of the air cylinder is installed on the first body, and a rod body of the air cylinder is fixedly connected with the connecting frame.

7. The integrated pole piece draft gear according to claim 6, wherein:

the first driving unit further comprises a coupler, and the coupler is connected between a motor shaft of the servo motor and the rotating shaft.

8. The integrated pole piece take-off of any one of claims 1 to 7, wherein:

the integral pole piece traction device further comprises a button, the button is installed on the supporting portion and linked with the second driving unit, and the button controls the second driving unit to drive the connecting frame to move back to the traction roller.

9. The integrated pole piece take-off of any one of claims 1 to 7, wherein:

the mounting bracket further comprises a connecting part, wherein a connecting hole is formed in the connecting part, and the connecting part and the supporting part are integrally formed.

10. Square power electric core winder, including pole piece unwinding device and coiling head, pole piece unwinding device to the first pay-off of coiling, its characterized in that:

the square power core winder further comprises an integral pole piece traction device as claimed in any one of claims 1 to 9;

along pole piece unwinding device's pay-off direction, integral pole piece draw gear is located pole piece unwinding device with it is between the head to convolute.