CN109560332B

CN109560332B - Winding apparatus

Info

Publication number: CN109560332B
Application number: CN201710890114.1A
Authority: CN
Inventors: 范全; 丘荣意
Original assignee: Dongguan Yakang Precision Machinery Co Ltd
Current assignee: Dongguan Yakang Precision Machinery Co Ltd
Priority date: 2017-09-27
Filing date: 2017-09-27
Publication date: 2020-12-01
Anticipated expiration: 2037-09-27
Also published as: CN109560332A

Abstract

A winding apparatus for winding a lithium battery cell, comprising: the winding device comprises a large rotating disc, a plurality of winding needles uniformly distributed on the large rotating disc and an auxiliary mechanism matched with the large rotating disc and the winding needles; this complementary unit includes: the device comprises a fixed roller positioned above a rotating large disc, a first transverse moving roller positioned outside the fixed roller, a second transverse moving roller positioned below the first transverse moving roller, a fourth transverse moving roller horizontally opposite to the second transverse moving roller, a motor for driving the first transverse moving roller, the second transverse moving roller and the fourth transverse moving roller to transversely displace, and a deviation correcting mechanism positioned above the first transverse moving roller; the deviation correcting mechanism comprises a third deviation correcting roller and a fourth deviation correcting roller, and the third deviation correcting roller is driven by the cylinder to approach or be far away from the fourth deviation correcting roller; the fourth deviation rectifying roller can be locked together with the closed third deviation rectifying roller, and is driven by the motor to rectify the deviation of the first pole piece clamped by the third deviation rectifying roller and the fourth deviation rectifying roller. The invention has high precision and good stability, and can greatly improve the processing efficiency.

Description

Winding apparatus

Technical Field

The invention relates to a winding device, in particular to an auxiliary mechanism of the winding device.

Background

The existing winding equipment generally comprises a large rotating disc, three winding needles uniformly arranged at three stations on the large rotating disc and a plurality of auxiliary mechanisms. Wherein, the three stations are correspondingly a winding station, a residual roll station and an unloading station. The auxiliary mechanism is used for matching with the rotary large disc and the winding needle to realize corresponding functions, such as: and positioning and cutting off the diaphragm, and rectifying the deviation of the pole piece. The existing auxiliary mechanism is generally based on an air path system, and adopts an air cylinder as a power element to realize the driving of a compression roller, a cutter, a deviation correction roller and the like. There are some drawbacks to using cylinder actuation: the precision is not high enough, the stability is not good enough, the processing efficiency is difficult to improve, and improvement is actually needed.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides the winding equipment which is high in precision and good in stability and can greatly improve the processing efficiency.

The present invention provides a winding apparatus for winding a lithium battery cell, which includes: the winding device comprises a large rotating disc, a plurality of winding needles uniformly distributed on the large rotating disc and an auxiliary mechanism matched with the large rotating disc and the winding needles; this complementary unit includes: the device comprises a fixed roller positioned above a rotating large disc, a first transverse moving roller positioned outside the fixed roller, a second transverse moving roller positioned below the first transverse moving roller, a fourth transverse moving roller horizontally opposite to the second transverse moving roller, a motor for driving the first transverse moving roller, the second transverse moving roller and the fourth transverse moving roller to transversely displace, and a deviation correcting mechanism positioned above the first transverse moving roller; the deviation correcting mechanism comprises a third deviation correcting roller and a fourth deviation correcting roller, and the third deviation correcting roller is driven by the cylinder to approach or be far away from the fourth deviation correcting roller; the fourth deviation rectifying roller can be locked together with the closed third deviation rectifying roller, and is driven by the motor to rectify the deviation of the first pole piece clamped by the third deviation rectifying roller and the fourth deviation rectifying roller.

Compared with the prior art, the winding equipment has the advantages that the motor is skillfully adopted to drive the first transverse moving roller, the second transverse moving roller and the fourth transverse moving roller to transversely displace, the third deviation correcting roller driven by the air cylinder and the fourth deviation correcting roller driven by the motor form a deviation correcting mechanism, the diaphragm and the pole piece of the winding needle fed into the winding station are guided and corrected, the precision is high, the stability is good, and the processing efficiency can be greatly improved.

Drawings

Fig. 1 is a schematic view of the structure of the winding apparatus of the present invention.

Fig. 2 to 6 are schematic diagrams of the structure and operation of the slitting and pressing unit in the winding device of the present invention, wherein fig. 2 is a schematic diagram of the structure, and fig. 3, 4, 5 and 6 correspond to four schematic diagrams of the operation.

Fig. 7 to 11 are schematic diagrams of the structure and operation of the fixed roller unit in the winding apparatus of the present invention, wherein fig. 7 is a schematic diagram of the structure, and fig. 8, 9, 10 and 11 correspond to four schematic diagrams of the operation.

Fig. 12 to 16 are schematic diagrams of the structure and the operation of the fixed roll unit and the oscillating roll in the winding apparatus of the present invention, wherein fig. 12 is a schematic diagram of the structure, and fig. 13, 14, 15 and 16 correspond to four schematic diagrams of the operation.

Fig. 17 to 21 are schematic diagrams of the structure and operation of the oscillating roller and the first deviation rectifying unit in the winding apparatus of the present invention, wherein fig. 17 is a schematic diagram of the structure, and fig. 18, 19, 20 and 21 correspond to four schematic diagrams of the operation.

Fig. 22 to 26 are schematic diagrams of the structure and operation of the second deviation rectifying unit in the winding apparatus of the present invention, wherein fig. 22 is a schematic diagram of the structure, and fig. 23, 24, 25 and 26 correspond to four schematic diagrams of the operation.

Fig. 27 to 31 are schematic diagrams of the structure and operation of the oscillating roller and two deviation rectifying units in the winding apparatus of the present invention, wherein fig. 27 is a schematic diagram of the structure, and fig. 28, 29, 30 and 31 correspond to four schematic diagrams of the operation.

Wherein, the reference numbers indicate that 100 the winding device 101, the first traverse roller 102, the second traverse roller 111, the third traverse roller 112, the fourth traverse roller 113, the guide seat 121, the swing roller 122, the swing roller driving 124, the fixed roller 125, the first deviation correcting roller 132, the second deviation correcting roller 133, the third deviation correcting roller 134, the fourth deviation correcting roller 15, the cutting knife 152 of the diaphragm unit 151, the guide mechanism 154, the motor 16, the first pressure roller 162, the guide mechanism 163, the crank mechanism 164, the motor 165, the second pressure roller 18, the rotating large disc 185, the fixed roller 19, the winding needle 201, the pole piece cutting knife 202, the

pole piece clamp

205, 206, 207 and 208 substrates are arranged.

Detailed Description

The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 31, the present invention provides a winding apparatus 100, taking the winding of a first separator G1, a first pole piece J1, a second separator G2 and a second pole piece J2 of a lithium battery cell as an example, which substantially comprises: the device comprises a large rotating disk 18, three winding needles 19 uniformly distributed on the large rotating disk 18, and an auxiliary mechanism matched with the large rotating disk 18 and the winding needles 19 on the large rotating disk. Wherein the upper left winding needle 19 corresponds to the winding station; the lower left winding needle 19 corresponds to the stub roll station; the winding needle 19 on the right corresponds to the discharge station. Three fixing rollers 185 are uniformly distributed in the center of the rotating large disk 18.

The assist mechanism further includes: the device comprises a first traverse roller 101, a second traverse roller 102, a third traverse roller 111, a fourth traverse roller 112, a guide seat 113, a swing roller 121, a swing roller drive 122, a second fixed roller 125, a first deviation rectifying unit (also called right deviation rectifying unit) mainly composed of a first deviation rectifying roller 131 and a second deviation rectifying roller 132, a second deviation rectifying unit (also called left deviation rectifying unit) mainly composed of a third deviation rectifying roller 133 and a fourth deviation rectifying roller 134, a diaphragm cutting unit 15, a diaphragm pressing unit 16,

pole piece cutters

201 and 202 and the like.

The first traverse roller 101 cooperates with the second fixed roller 125 to guide the first diaphragm G1 and the first pole piece J1. The first traverse roller 101 is driven by a motor and a traveling pair. The rotation of the motor can drive the first traverse roller 101 to make a linear motion toward/away from the second fixed roller 125. The sliding pair is a screw rod.

The second traverse roller 102 is located below the first traverse roller 101, and cooperates with the fourth traverse roller 112 to guide the first separator G1, the first pole piece J1, the second separator G2, and the second pole piece J2. The second traverse roller 102 is driven by a motor and a traveling pair. The rotation of the motor can drive the second traverse roller 102 to make a linear motion toward/away from the fourth traverse roller 112. The sliding pair is a screw rod.

The third traverse roller 111 cooperates with the swing roller 121 to guide the second diaphragm G1 and the second pole piece J2. The third traverse roller 111 is driven by a motor and a traveling pair. The rotation of the motor can drive the third traverse roller 111 to make a linear motion toward/away from the swing roller 121. The sliding pair is a screw rod.

The fourth traverse roller 112 is located below the third traverse roller 111, and guides the first separator G1, the first pole piece J1, the second separator G2, and the second pole piece J2 in cooperation with the second traverse roller 102. The fourth traverse roller 112 is driven by a motor and a traveling pair. The rotation of the motor can drive the fourth traverse roller 112 to make a linear motion toward/away from the second traverse roller 102. The sliding pair is a screw rod.

It should be noted that the third traverse roller 111 and the fourth traverse roller 112 are synchronously operated, are respectively installed on both top and bottom sides of the guide base 113, and are driven by the same motor and the same sliding pair. The guide seat 113 has an inclined guide surface capable of guiding the transmission of the second diaphragm G2 and the second pole piece J2.

The swing roller 121 is rotatable about a set pivot axis by a swing roller drive 122 to swing toward and away from the third traverse roller 111. Specifically, the swing roller drive 122 includes a motor, a sliding pair, and a swing arm. The swing roller 121 is installed at the lower end of the swing arm, the upper end of the swing arm is coupled with the moving pair, and the middle of the swing arm is coupled with a set pivot shaft. The rotation of the motor can drive the linear motion of the sliding pair, and the linear motion of the sliding pair is converted into the swing of the swing arm, so that the swing roller 121 swings. The sliding pair is a screw rod.

The oscillating roller 121 has two stable positions: a first position at the bottom right and a second position at the top left. In the first position, the oscillating roller 121 cooperates with the third traverse roller 111 to guide the second diaphragm G2 and the second pole piece J2, and the second diaphragm G2 and the second pole piece J2 are attached to increase friction, which is beneficial to bring the pole piece J2 to the winding needle 19 of the winding station on the rotary large disc 18.

In the second position, the swing roller 121 guides the second diaphragm G2 so that the second diaphragm G2 can be conveyed in a set posture. In the present embodiment, the set posture means that the second diaphragm G2 is vertically conveyed from top to bottom, and this posture is favorable for the winding needle 19 at the winding station on the rotating large disc 18 to extend (also referred to as needle threading).

In the right deviation correcting unit, the first deviation correcting roller 131 located at the lower right side is driven by an air cylinder, and can be moved closer/away from the second deviation correcting roller 132 located at the upper left side. The second correction roller 132 positioned on the upper left side is driven by a motor and can move across the sheet. With the structure, the first deviation rectification roller 131 can be matched with the second deviation rectification roller 132 to rectify the deviation of the second pole piece J2.

When the first and

second rectification rollers

131 and 132 are brought close together, the first and

second rectification rollers

131 and 132 are combined together by a locking mechanism. For example: the installation seats of the first deviation rectification roller 131 are provided with protruding parts, the installation seats of the second deviation rectification roller 132 are provided with recessed parts, and the protruding parts are correspondingly inserted into the recessed parts, so that the two installation seats are combined together, and the first deviation rectification roller 131 and the second deviation rectification roller 132 can be driven by the same motor to move through a paper surface.

It should be noted that the first deviation correcting roller 131 is also fixed to the guide base 113 and operates in synchronization with the third traverse roller 111 and the fourth traverse roller 112.

In the left deviation correcting unit, the third deviation correcting roller 133 located at the upper right side is driven by an air cylinder, and can be moved closer/farther to/from the fourth deviation correcting roller 134 located at the lower left side. The fourth rectification roller 134 positioned on the lower left side is driven by a motor and can move across the sheet. With the structure, the third deviation rectifying roller 133 can be in contact with the fourth deviation rectifying roller 134, so that the deviation rectification of the first pole piece J1 is realized.

When the third and

fourth rectification rollers

133 and 134 are brought close together, the third and

fourth rectification rollers

133 and 134 are combined together by a locking mechanism. For example: the mounting seats of the third deviation rectifying roller 133 are provided with convex portions, the mounting seats of the fourth deviation rectifying roller 134 are provided with concave portions, and the convex portions are correspondingly inserted into the concave portions, so that the two mounting seats are combined together, and the third deviation rectifying roller 133 and the fourth deviation rectifying roller 134 can be driven by the same motor to move across the paper surface.

The

pole piece cutters

201 and 202 are respectively arranged below the left deviation rectifying unit and the right deviation rectifying unit and are used for cutting off the first pole piece J1 and the second pole piece J2 when appropriate.

Hereinafter, the structure and operation of the slit/pressure membrane unit in the winding machine of the present invention will be described in more detail with reference to fig. 2 to 6. The diaphragm cutting unit 15 and the diaphragm pressing unit 16 are each independently mounted on the substrate.

The membrane cutting unit 15 is mainly composed of a cutting knife 151, a guide mechanism 152, a crank mechanism 153 and a motor 154. The rotation of the motor 154 can be converted into a precise linear motion by the cooperation of the crank mechanism 153 and the guide mechanism 152, so as to drive the cutter 151 to move transversely (i.e., left and right). In other embodiments, the crank mechanism 153 may be replaced by other moving pairs such as a rocker mechanism, an eccentric mechanism, and a sine mechanism to achieve precise driving of the linear motion of the cutter 151.

The pressing diaphragm unit 16 is mainly constituted by a first pressing roller 161, a guide mechanism 162, a crank mechanism 163, a motor 164, and a second pressing roller 165. The first pressing roller 161 and the second pressing roller 165 are installed together one above another. The second pressing roller 165 is coupled with an elastic member. The rotation of the motor 164 can be converted into a precise linear motion by the cooperation of the crank mechanism 163 and the guide mechanism 162, and the first pressing roller 161 and the second pressing roller 165 are driven to synchronously move transversely. In other embodiments, the crank mechanism 163 may be replaced by other moving pairs such as a rocker mechanism, an eccentric mechanism, and a sine mechanism to achieve precise driving of the linear motion of the first pressing roller 161 and the second pressing roller 165.

Referring to fig. 3, the winding apparatus 100 is in the winding process, and the slit membrane unit 15 and the slit membrane unit 16 are in the origin position away from the center of the rotating large disk 18 and the winding needle 19.

Referring to fig. 4, the winding apparatus 100 is in the process of turning the large rotating disk 18, that is, the large rotating disk 18 rotates 120 degrees, and the stations corresponding to the three winding pins 19 are switched once.

Referring to fig. 5, the winding apparatus 100 is in the nip process, and the motor 164 rotates to move the first and second nip

rollers

161 and 165 rightward in synchronization, near the center of the rotating platter 18. The second pressing roller 165 is engaged with a fixed roller 185 at the center of the rotary table 18 to press the first diaphragm G1 and the second diaphragm G2 (the pressing force is appropriately adjusted by an elastic member coupled to the second pressing roller 165). The first pressure roller 161 is engaged with the second traverse roller 102 and the fourth traverse roller 112, and the first diaphragm G1 and the second diaphragm G2 can be ensured to be upright. After the first pressing roller 161 and the second pressing roller 165 are synchronously moved rightward to a position, the motor 164 stops rotating. At this time, the winding needle 19 at the winding station is in an open state.

Referring to fig. 6, in the diaphragm cutting process of the winding apparatus 100, after the second pressing roller 165 cooperates with the fixed roller 185 to press the first diaphragm G1 and the second diaphragm G2, and the first pressing roller 161 cooperates with the second traverse roller 102 and the fourth traverse roller 112 to ensure that the first diaphragm G1 and the second diaphragm G2 are vertical, the winding needle 19 at the winding station clamps the first diaphragm G1 and the second diaphragm G2, the motor 154 rotates, the crank mechanism 153 pushes, and the cutting knife 151 moves to the right toward the center of the rotating large disc 18 to cut the first diaphragm G1 and the second diaphragm G2. After the first diaphragm G1 and the second diaphragm G2 are cut, the cutting diaphragm unit 15 and the pressing diaphragm unit 16 are simultaneously operated to return to the original position.

Hereinafter, the structure and operation of the fixed roller unit in the winding apparatus according to the present invention will be described in more detail with reference to fig. 7 to 11. The fixed roller unit is mainly constituted by a first traverse roller 101, a second traverse roller 102, a first fixed roller 124, a second fixed roller 125, a third traverse roller 111, and a fourth traverse roller 112. The fixed roller unit is mounted on the substrate 206. As described above, the third traverse roller 111 and the fourth traverse roller 112 are fixed to the guide base 113, and the guide base 113 is driven by the motor and the lead screw to drive the third traverse roller 111 and the fourth traverse roller 112 to accurately linearly move.

It is to be noted that the first fixed roller 124 here is substantially equivalent to the first position of the swing roller 121 in fig. 1, and is used in cooperation with the third traverse roller 111. In other words, it is possible to replace the first fixed roller 124 here with the swing roller 121 in fig. 1.

Referring to fig. 8, the winding apparatus 100 is in the winding process with a certain interval between the first traverse roller 101 and the second fixed roller 125 which are engaged with each other; a certain interval is formed between the third traverse roller 111 and the first fixed roller 124 which are engaged with each other; a space is provided between the second traverse roller 102 and the fourth traverse roller 112 which are engaged with each other. The size of the intervals can be adjusted by driving a screw rod through a motor.

Referring to fig. 9, the winding apparatus 100 is in the process of turning over the rotating large disc 18. At this time, the first traverse roller 101 is driven to move left, leaving a necessary space with the second fixed roller 125; the third traverse roller unit 111 is driven to move right, leaving a necessary space with the first fixed roller 124; the second traverse roller 102 is driven to move left, and the fourth traverse roller 112 is driven to move right, leaving a necessary space therebetween.

Referring to fig. 10, the winding apparatus 100 is in a sheet feeding process. At this time, a necessary space between the first traverse roller 101 and the second fixed roller 125 is passed through by the first separator G1 and the first pole piece J1. A necessary space between the third traverse roller 111 and the first fixed roller 124 is provided for the second diaphragm G2 and the second pole piece J2 to pass through. The necessary space between the second traverse roller 102 and the fourth traverse roller 112 is for the first separator G1, the first pole piece J1, the second separator G2, and the second pole piece J2 to pass through. After the sheet feeding is in place, the first pressing roller 161 and the second pressing roller 165 are simultaneously moved rightward, pressing the first diaphragm G1 and the second diaphragm G2.

Referring to fig. 11, the winding device 100 is in a needle threading and closing process. At this time, the first traverse roller unit 101 is driven to move right, and sandwiches the first diaphragm G1 and the first pole piece J1 together with the second fixed roller 125. The third traverse roller 111 is driven to move left, and sandwiches the second diaphragm G2 and the second pole piece J2 together with the first fixed roller 124. The second traverse roller 102 is moved to the right and the fourth traverse roller 112 is moved to the left, so that the fourth traverse roller 112 is brought close to the second traverse roller 102, and the necessary guide can be provided for the first diaphragm G1 and the second diaphragm G2. Then, the winding needle 19 at the winding station is extended to be opened, and then closed to sandwich the first diaphragm G1 and the second diaphragm G2. Then, the cutter 151 is driven to move right, and the first diaphragm G1 and the second diaphragm G22 are cut off; then, the cutter 151, the first pressing roller 161, and the second pressing roller 165 are returned to the original position, and the winding apparatus 100 can start winding.

Hereinafter, the structure and operation of the fixed roller unit and the swing roller in the winding apparatus according to the present invention will be described in more detail with reference to fig. 12 to 16. Wherein the fixed roller unit is mounted on the substrate 206. The oscillating roller is mounted on the substrate 208.

Referring to fig. 13, the winding apparatus 100 is in the winding process with a certain interval between the first traverse roller 101 and the second fixed roller 125 which are engaged with each other; a certain interval is provided between the third traverse roller 111 and the swing roller 121 which are engaged with each other; a space is provided between the second traverse roller 102 and the fourth traverse roller 112 which are engaged with each other. The size of the intervals can be adjusted by driving a screw rod through a motor. At this time, the swing roller 121 is driven at the first position.

Referring to fig. 14, the winding apparatus 100 is in the process of flipping with the pole pieces cut and rotating the large disc 18. At this time, the first traverse roller 101 is driven to the left, and a necessary space is left between the first traverse roller and the second fixed roller 125. The third traverse roller 111 is driven to move right, leaving a necessary space with the swing roller 121. The second traverse roller 102 is driven to move left, and the fourth traverse roller 112 is driven to move right, leaving a necessary space therebetween. At this time, the swing roller 121 is driven at the second position.

Referring to fig. 15, the winding apparatus 100 is in a sheet-feeding process. At this time, a necessary space between the first traverse roller 101 and the second fixed roller 125 is passed through by the first separator G1 and the first pole piece J1. A necessary space between the third traverse roller 111 and the swing roller 121 at the second position is provided for the second diaphragm G2 and the second pole J2 to pass through. The necessary space between the second traverse roller 102 and the fourth traverse roller 112 is for the first separator G1, the first pole piece J1, the second separator G2, and the second pole piece J2 to pass through. After the sheet feeding is in place, the first pressing roller 161 and the second pressing roller 165 are simultaneously moved rightward, pressing the first diaphragm G1 and the second diaphragm G2.

Referring to fig. 16, the winding device 100 is in a needle threading and closing process. At this time, the first traverse roller 101 is driven to move right, and sandwiches the first diaphragm G1 and the first pole piece J1 together with the second fixed roller 125. The third traverse roller 111 is driven to the left, and sandwiches the second diaphragm G2 and the second pole piece J2 together with the swing roller 121 driven at the first position. The second traverse roller 102 is moved to the right and the fourth traverse roller 112 is moved to the left, so that the fourth traverse roller 112 is brought close to the second traverse roller 102, and the necessary guide can be provided for the first diaphragm G1 and the second diaphragm G2. Then, the winding needle 19 at the winding station is extended to be opened, and then closed to sandwich the first diaphragm G1 and the second diaphragm G2. Then, the cutter 151 is driven to move right, and the first diaphragm G1 and the second diaphragm G2 are cut off; then, the cutter 151, the first pressing roller 161, and the second pressing roller 165 are returned to the original position, and the winding apparatus 100 can start winding.

The structure and operation of the oscillating roller and the first deviation correcting unit in the winding apparatus of the present invention will be described in more detail with reference to fig. 17 to 21. The dancer roll and the first deviation rectifying unit are mounted on the substrate 208.

Referring to FIG. 18, the winding apparatus 100 is in the winding process, and the second and

fourth traverse rollers

102 and 112, which cooperate with each other, are paired up; the swing roller 121 is paired with the second traverse roller 102 at the first position. The first deviation rectifying roller 131 is mounted on the base plate 208. The first deviation rectifying roller 131 and the second deviation rectifying roller 132 are close to each other, driven by a motor (not shown), and can move in a direction crossing the paper surface (i.e., the substrate 208), so as to rectify deviation of the sheet feeding and winding processes of the second pole piece J2.

Referring to fig. 19, the winding apparatus 100 is in the process of turning the pole piece off and rotating the large disc 18. At this time, the third traverse roller 111 is driven to move rightward, leaving a necessary space with the swing roller 121. The second traverse roller 102 is moved to the left, and the fourth traverse roller 112 is moved to the right, leaving a necessary space therebetween. At this time, the swing roller 121 is driven at the second position. The first and

second rectification rollers

131 and 132 are separated.

Referring to fig. 20, the winding apparatus 100 is in a sheet feeding process. At this time, a necessary space between the third traverse roller 111 and the swing roller 121 at the second position is passed through by the second diaphragm G2 and the second pole piece J2. The necessary space between the second traverse roller 102 and the fourth traverse roller 112 is for the first separator G1, the first pole piece J1, the second separator G2, and the second pole piece J2 to pass through. After the sheet feeding is in place, the first pressing roller 161 and the second pressing roller 165 are simultaneously moved rightward, pressing the first diaphragm G1 and the second diaphragm G2. At this time, the first and

second rectification rollers

131 and 132 are separated.

Referring to fig. 21, the winding device 100 is in a needle threading and closing process. At this time, the first traverse roller 101 is driven to move right, and sandwiches the first diaphragm G1 and the first pole piece J1 together with the second fixed roller 125. The third traverse roller 111 is driven to move left, and sandwiches the second diaphragm G2 and the second pole piece J2 together with the swing roller 121 driven at the first position. The second traverse roller 102 is driven to move right and the fourth traverse roller 112 is driven to move left, so that the fourth traverse roller 112 and the second traverse roller 102 come close to each other, and necessary guides can be provided for the first diaphragm G1 and the second diaphragm G2.

The first deviation rectifying roller 131 and the second deviation rectifying roller 132 are close to each other to clamp the second pole piece J2, and the second pole piece J2 can be rectified by means of detection signals.

After the correction is completed, the winding needle 19 at the winding station is extended to be opened, and then closed to clamp the first diaphragm G1 and the second diaphragm G2. Then, the cutter 151 is driven to move right, and the first diaphragm G1 and the second diaphragm G2 are cut off; then, the cutter 151, the first pressing roller 161, and the second pressing roller 165 are returned to the original position, and the winding apparatus 100 can start winding.

The structure and operation of the second deviation rectifying unit in the winding apparatus of the present invention will be described in more detail with reference to fig. 22 to 26. It should be noted that the second deviation rectifying unit may be fixed on the same substrate 207 together with the pole piece cutter 201, and the second deviation rectifying unit moves along with the movement of the cutter 201 (see fig. 22 to 25). The second deviation rectifying unit may also be mounted on the base plate 207 independently of the pole piece cutter 201 (see fig. 26).

Referring to fig. 23, the winding apparatus 100 is in a winding process. At this time, the second traverse roller 102 and the fourth traverse roller 112, which are engaged with each other, are paired. The first traverse roller 101 and the second fixed roller 125 which are engaged with each other are paired. The third deviation rectifying roller 133 and the fourth deviation rectifying roller 134 are close to each other, driven by a motor (not shown), and can move in a direction crossing the paper surface (i.e., the substrate 207), so as to rectify the deviation of the sheet feeding and winding processes of the first pole piece J1.

Referring to fig. 24, the winding apparatus 100 is in the process of turning the rotating platter 18 with the pole pieces cut off. At this time, the first traverse roller 111 is driven to the left, and a necessary space is left between the first traverse roller and the second fixed roller 125. The second traverse roller unit 102 is driven to move left, and the fourth traverse roller 112 is driven to move right, leaving a necessary space therebetween. At this time, the first and

second rectification rollers

131 and 132 are separated.

Referring to fig. 25, the winding apparatus 100 is in a sheet feeding process. The first traverse roller 101 and the second fixed roller 125 are provided with a necessary space therebetween for the first separator G1 and the first pole piece J1 to pass through. The necessary space between the second traverse roller 102 and the fourth traverse roller 112 is for the first separator G1, the first pole piece J1, the second separator G2, and the second pole piece J2 to pass through. After the sheet feeding is in place, the first pressing roller 161 and the second pressing roller 165 are simultaneously moved rightward, pressing the first diaphragm G1 and the second diaphragm G2. At this time, the third and

fourth rectification rollers

133 and 134 are separated.

Referring to fig. 26, the winding device 100 is in a needle threading and closing process. The first traverse roller 101 is driven to move right, and sandwiches the first diaphragm G1 and the first pole piece J1 together with the second fixed roller 125. The second traverse roller 102 is driven to move to the right and the fourth traverse roller 112 is driven to move to the left, providing guidance for the first diaphragm G1, the first pole piece J1, the second diaphragm G2, and the second pole piece J2.

The third deviation rectifying roller 133 and the fourth deviation rectifying roller 134 are close to each other to clamp the first pole piece J1, and the first pole piece J1 can be rectified depending on a detection signal.

The structure and operation of the oscillating roller and the two deviation correcting units in the winding apparatus of the present invention will be described in more detail below with reference to fig. 27 to 31. It will be appreciated that this is a comprehensive description of the oscillating roller and first deviation rectifying unit described above with reference to fig. 17 to 21, and the second deviation rectifying unit described above with reference to fig. 22 to 27. Wherein the oscillating roller is mounted on the substrate 205. The first deviation rectifying unit is mounted on the substrate 208. The second deviation rectifying unit is installed on the substrate 207.

Referring to fig. 28, the winding apparatus 100 is in the winding process with the oscillating roller 121 in the first position. The first deviation rectifying roller 131 and the second deviation rectifying roller 132 are close to each other, driven by a motor (not shown), and can move in a direction crossing the paper surface (i.e., the substrate 208), so as to rectify deviation of the sheet feeding and winding processes of the second pole piece J2. The third deviation rectifying roller 133 and the fourth deviation rectifying roller 134 are close to each other, driven by a motor (not shown), and can move in a direction crossing the paper surface (i.e., the substrate 207), so as to rectify the deviation of the sheet feeding and winding processes of the first pole piece J1.

Referring to fig. 29, the winding apparatus 100 is in the process of turning the rotating platter 18 with the pole pieces cut off. At this time, the swing roller 121 is driven at the second position. The first and

second rectification rollers

131 and 132 are separated. The third and

fourth rectification rollers

133 and 134 are separated.

Referring to fig. 30, the winding apparatus 100 is in a sheet feeding process. After the sheet feeding is in place, the first pressing roller 161 and the second pressing roller 165 are synchronously moved rightward, and the first diaphragm G1 and the second diaphragm G2 can be pressed.

Referring to fig. 31, the winding device 100 is in a needle threading and closing process. At this time, the first traverse roller 101 is driven to move right, and sandwiches the first diaphragm G1 and the first pole piece J1 together with the second fixed roller 125. The third traverse roller 111 is driven to move left, and sandwiches the second diaphragm G2 and the second pole piece J2 together with the swing roller 121 driven at the first position. The second traverse roller 102 is driven to move to the right and the fourth traverse roller 112 is driven to move to the left, providing guidance for the first diaphragm G1, the first pole piece J1, the second diaphragm G2, and the second pole piece J2.

The first deviation rectifying roller 131 and the second deviation rectifying roller 132 are close to each other to clamp the second pole piece J2, and the second pole piece J2 can be rectified by means of detection signals. The third deviation rectifying roller 133 and the fourth deviation rectifying roller 134 are close to each other to clamp the first pole piece J1, and the first pole piece J1 can be rectified depending on a detection signal.

After the deviation correction is finished, the winding needle 19 at the winding station is extended in an opening manner and then closed to clamp the first diaphragm G1 and the second diaphragm G2; then, the cutter 151 is driven to move right, and the first diaphragm and the second diaphragm G2 are cut off; then, the cutter 151, the first pressing roller 161, and the second pressing roller 165 are returned to the original position, and the winding apparatus 100 can start winding.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the embodiments of the present invention, and those skilled in the art can easily make various changes and modifications according to the main concept and spirit of the present invention, so the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A winding apparatus for winding a lithium battery cell, comprising: the winding device comprises a large rotating disc, a plurality of winding needles uniformly distributed on the large rotating disc and an auxiliary mechanism matched with the large rotating disc and the winding needles; it is characterized in that the auxiliary mechanism comprises: the device comprises a fixed roller positioned above a rotating large disc, a first transverse moving roller positioned outside the fixed roller, a second transverse moving roller positioned below the first transverse moving roller, a fourth transverse moving roller horizontally opposite to the second transverse moving roller, a motor for driving the first transverse moving roller, the second transverse moving roller and the fourth transverse moving roller to transversely displace, and a deviation correcting mechanism positioned above the first transverse moving roller; the deviation correcting mechanism comprises a third deviation correcting roller and a fourth deviation correcting roller, and the third deviation correcting roller is driven by the cylinder to approach or be far away from the fourth deviation correcting roller; the fourth deviation rectifying roller can be locked with the third deviation rectifying roller which is close to the fourth deviation rectifying roller, and is driven by a motor to rectify the deviation of the first pole piece clamped by the third deviation rectifying roller and the fourth deviation rectifying roller;

the first transverse moving roller is paired with the fixed roller group and used for guiding the conveying of the first diaphragm and the first pole piece; the second transverse moving roller and the fourth transverse moving roller are paired and used for guiding the conveying of the first diaphragm, the first pole piece, the second diaphragm and the second pole piece.

2. The winding apparatus according to claim 1, wherein the roller base of the third deviation correcting roller and the roller base of the fourth deviation correcting roller are provided with a locking mechanism, respectively, so that the fourth deviation correcting roller can be locked with the third deviation correcting roller close together.

3. Spooling apparatus as defined in claim 2, wherein the locking mechanism comprises a socket provided on the roller holder of the fourth deviation rectification roller and an insert rod provided on the roller holder of the third deviation rectification roller.

4. Winding apparatus according to claim 1, wherein the deviation correction means are independent of the pole piece cutter for cutting the first pole piece.

5. The winding apparatus according to claim 1, wherein the deviation correcting mechanism is provided on a pole piece cutter for cutting the first pole piece.

6. The winding apparatus according to claim 5, wherein the pole piece cutter is located below the deviation correction mechanism.

7. The winding apparatus according to claim 1, wherein the first traverse roller is driven by a motor to be expandable relative to the fixed roller to allow the first diaphragm and the first pole piece to pass therethrough; and this first sideslip roller is driven and can be drawn close relatively this fixed roll in the motor to clip first diaphragm and first pole piece, make first pole piece can be driven by first diaphragm.

8. The winding apparatus according to claim 1, wherein the second traverse roller is driven by a motor, and the fourth traverse roller is driven by a motor and can be relatively opened to allow the first diaphragm, the first pole piece, the second diaphragm, and the second pole piece to pass therethrough; and, this second sideslip roller is driven in the motor, and this fourth sideslip roller is driven in the motor, can draw close relatively to guide first diaphragm, first pole piece, second diaphragm and second pole piece.

9. Winding apparatus according to claim 1, characterized in that the first traverse roller and the second traverse roller are driven by two motors, respectively.