CN215069635U

CN215069635U - Winding chuck

Info

Publication number: CN215069635U
Application number: CN202121629995.XU
Authority: CN
Inventors: 聂鹏举; 蒙亚倪; 凌豪杰; 王伟
Original assignee: Shenzhen Kelier Industrial Automation Control Technology Co ltd
Current assignee: Shenzhen Kelier Industrial Automation Control Technology Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-12-07
Anticipated expiration: 2031-07-16

Abstract

The utility model provides a winding chuck, which comprises an installation part fixed on a winding machine and a clamping part arranged at the front end of the installation part and used for clamping a coil framework, wherein the installation part comprises an installation seat, a connecting seat and a pushing block; the clamping part comprises a pair of sliding blocks, a pair of clamping blocks and a first spring connected with the pair of sliding blocks, and the pair of sliding blocks are respectively abutted to two sides of the connecting seat through the pushing blocks. The utility model provides a winding chuck, the relative position of a pair of grip blocks can be adjusted through promoting the promotion piece in the mount pad, realize the centre gripping to the coil skeleton, ensure the stability of coil skeleton under the clamping state between a pair of grip blocks, improve the winding efficiency of coiling machine, improve the winding quality; and relative position between a pair of grip blocks can be adjusted through promoting the piece to the realization improves the suitability of winding chuck to the centre gripping of the solid skeleton of coil of different models, reduces the frequency and the man-hour that the coiling machine changed to the winding chuck.

Description

Winding chuck

Technical Field

The utility model belongs to the technical field of coiling machine equipment accessories technique and specifically relates to a winding chuck is related to.

Background

In the existing winding machine equipment, a winding chuck is required to clamp a coil framework, and the coil framework is driven to rotate by driving the winding chuck. Generally, a coil bobbin is directly sleeved on a clamping portion of a winding chuck, an installation portion of the winding chuck is fixed on a winding machine, and the winding chuck is driven by the winding machine to rotate along an axis of the winding chuck, so that the coil bobbin on the clamping portion is driven to rotate for winding. On the coiling machine, for the coil of different thickness, need to change different winding chucks and be suitable for the required coil skeleton of different thickness coil. Therefore, not only is the winding chuck required to be added to adapt to different coils, the production cost is increased, but also the processing procedure, the processing working hour and the labor cost are increased by replacing the winding chuck. In addition, the existing winding chuck has poor fixation on the coil frame, the winding frame is easy to be damaged in the winding process of the winding machine, or the winding efficiency is low and the quality of the finished product is unstable due to the cheap coil frame.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the present wire winding chuck adaptability poor, it is not good to wire winding skeleton's fixity, lead to damaging skeleton, wire winding efficiency slow, the unstable shortcoming of product quality provides a wire winding chuck.

The utility model provides a technical scheme that its technical problem adopted is: a winding chuck comprises a mounting part fixed on a winding machine and a clamping part arranged at the front end of the mounting part and used for clamping a coil framework, wherein the mounting part comprises a mounting seat fixed on the winding machine, a connecting seat fixed at the front end of the mounting seat and movably connected with the clamping part, and a pushing block extending from the mounting seat into the connecting seat; the clamping part comprises a pair of sliding blocks arranged in the connecting seat and abutted to the pushing blocks, a pair of clamping blocks fixedly connected with the sliding blocks and extending out of the front end of the connecting seat, and a first spring movably connected with the sliding blocks, and the pushing blocks are used for respectively abutting the sliding blocks to two sides of the connecting seat.

Specifically, the pushing block comprises a base block arranged in the mounting seat and a lifting part arranged in the connecting seat, two opposite guide inclined planes which are abutted against the sliding blocks are arranged on the lifting part, and the distance between the two guide inclined planes is gradually reduced from one side of the connecting seat to one side of the mounting seat.

Further, the mounting base includes the base that can supply to promote the piece and remove, set up in the front end of base with connecting seat fixed connection's mount table and set up in the rear end of base with coiling machine fixed connection's positioning seat.

Specifically, the installation department still includes a pair of by the base is inside to both sides extend to the slip dog outside the base, and a pair of the slip dog is fixed in promote the mount pad both sides of piece, be provided with two on the base and supply the slip window that the slip dog stretches out.

Specifically, the installation portion still including set up in the second spring in the mount pad, the second spring set up in the positioning seat with promote between the piece.

Furthermore, the clamping part further comprises a supporting block which is arranged between the pair of sliding blocks and fixed on the connecting seat, and the supporting block comprises a fixing plate arranged between the pair of sliding blocks, a central top block arranged on the upper surface of the fixing plate and extending to the position between the pair of clamping blocks, and a pair of fixing blocks arranged on two sides of the lower surface of the fixing plate and fixedly connected with the connecting seat.

Further, the sliding block includes vertical slider and the horizontal slider that mutually perpendicular set up and set up in on the vertical slider can with the bearing that promotes the inclined plane butt of direction of piece, the bearing through pivot swing joint in the bottom of vertical slider.

Specifically, a first mounting hole for fixing the rotating shaft and a second mounting hole for inserting the first spring are formed in the vertical sliding block.

Further, the clamping part still including set up in the connecting seat with a plurality of ball between the sliding block, the connecting seat is being close to one side of clamping part is provided with the spout that can supply a pair of sliding block horizontal slip, be provided with the first recess that a plurality of interval was arranged on the inner wall of spout, be provided with the second recess that a plurality of interval was arranged on the lateral wall of the both sides of the horizontal slider of sliding block, first recess in the spout with enclose between the second recess of sliding block and close the formation and supply a plurality of the sliding chamber that the ball was placed.

Specifically, the clamping part is including still set up in the both ends of sliding block are used for sealing the ball in the separation blade of sliding intracavity.

The utility model provides a wire winding chuck's beneficial effect lies in: the relative positions of the pair of clamping blocks can be adjusted by pushing the pushing block in the mounting seat, so that the coil framework is clamped, the stability of the coil framework in a clamping state between the pair of clamping blocks is ensured, the winding efficiency of the winding machine is improved, and the winding quality is improved; and relative position between a pair of grip blocks can be adjusted through promoting the piece to the realization improves the suitability of winding chuck to the centre gripping of the solid skeleton of coil of different models, reduces the frequency and the man-hour that the coiling machine changed to the winding chuck.

Drawings

Fig. 1 is a schematic perspective exploded view of a winding chuck according to the present invention;

fig. 2 is a cross-sectional view of a winding chuck according to the present invention;

fig. 3 is a front view of a winding chuck according to the present invention.

In the figure: 100-winding clamp and 30-coil framework;

10-mounting part, 11-mounting seat, 111-base, 112-mounting table, 113-positioning seat, 114-sliding window, 115-second spring, 12-connecting seat, 121-sliding groove, 1211-first groove, 13-pushing block, 131-base block, 1311-fourth mounting hole, -guide inclined plane, 14-sliding block, 141-pushing plate, 142-connecting plate and 1421-first connecting hole;

20-clamping part, 21-sliding block, 211-vertical sliding block, 2111-first mounting hole, 2112-second mounting hole, 212-horizontal sliding block, 2121-second groove, 213-bearing, 214-rotating shaft, 22-clamping block, 23-first spring, 24-supporting block, 241-fixing plate, 242-central top block, 243-fixing block, 2431-third mounting hole, 25-ball, 26-blocking piece and 27-locking piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, for the winding chuck 100 provided by the present invention, the winding chuck 100 can be applied to various winding machines, and is used for clamping the coil bobbin 30 and driven by the winding machine to rotate, so as to achieve the winding operation.

Specifically, as shown in fig. 1, the winding chuck 100 provided by the present invention includes an installation portion 10 fixed on the winding machine and a clamping portion 20 disposed at the front end of the installation portion 10 for clamping the coil frame 30, wherein the installation portion 10 is used for fixing the clamping portion 20 on the winding machine and rotating with the driving of the winding machine. The clamping portion 20 is used for clamping and fixing the bobbin 30, and prevents the bobbin 30 from sliding relative to the winding machine and damaging the bobbin 30.

Specifically, as shown in fig. 1 and fig. 2, the mounting portion 10 of the winding chuck 100 provided by the present invention includes a mounting seat 11 fixed on the winding machine, a connecting seat 12 fixed at the front end of the mounting seat 11 and movably connected to the clamping portion 20, and a pushing block 13 extending from the mounting seat 11 into the connecting seat 12. The mounting seat 11 of the mounting portion 10 can be fixed on a winding machine, and a device for fixing and driving the mounting seat 11 to rotate is arranged on the winding machine. The connecting seat 12 is fixedly connected with the mounting seat 11 through a connecting piece, the connecting seat 12 is mainly used for movably connecting the clamping portion 20 with the pushing block 13 in the mounting seat 11, and the clamping block 22 on the clamping portion 20 is driven to move towards or away from each other by utilizing the relative movement of the pushing block 13 in the mounting seat 11 and the connecting seat 12. The clamping portion 20 of the winding chuck 100 includes a pair of sliding blocks 21 disposed in the connecting base 12 and abutted against the pushing block 13, a pair of clamping blocks 22 fixedly connected to the pair of sliding blocks 21 and extending from the front end of the connecting base 12, and a first spring 23 movably connecting the pair of sliding blocks 21, wherein the pushing block 13 abuts the pair of sliding blocks 21 to both sides of the connecting base 12 respectively. The pair of sliding blocks 21 are disposed in the connecting seat 12 of the mounting portion 10 and abut against the pushing block 13 in the mounting portion 10, so that when the pushing block 13 moves toward the clamping portion 20 side, the pair of sliding blocks 21 can be pushed to move back to back. The pair of clamping blocks 22 are fixed on the pair of sliding blocks 21, and the clamping blocks 22 and the sliding blocks 21 are arranged in a one-to-one correspondence manner, so that the pair of sliding blocks 21 move towards or away from each other and simultaneously drive the pair of clamping blocks 22 to move synchronously. The pair of clamping blocks 22 on the clamping portion 20 are provided with grooves for the coil frame 30 to be embedded, when the pair of clamping blocks 22 move back to the limit position, the distance between the pair of clamping blocks 22 is the farthest, at this time, the coil frame 30 is embedded in the grooves of the pair of clamping blocks 22 and limited by the grooves on the pair of clamping blocks 22, so that the coil frame 30 and the pair of clamping blocks 22 are relatively fixed and can rotate along with the pair of clamping blocks 22.

Further, as shown in fig. 1 and fig. 2, the pushing block 13 in the installation portion 10 provided by the present invention includes a base block 131 disposed in the installation seat 11 and a jacking portion 132 disposed in the connection seat 12. The base block 131 and the jacking portion 132 of the pushing block 13 are integrally formed and made of 304 stainless steel. The lift-up portion 132 abuts against the pair of sliding blocks 21 inside the connecting holder 12, so that the pair of sliding blocks 21 are pushed by the push block 13 to move horizontally in the connecting holder 12 toward or away from each other. The lifting portion 132 is provided with two opposite guide inclined surfaces 1321 abutting against the pair of sliding blocks 21, and the distance between the two guide inclined surfaces 1321 is gradually reduced from the connecting seat 12 side to the mounting seat 11 side. Two oppositely arranged guide inclined surfaces 1321 provided on the lift-up portion 132 act on the pair of slide blocks 21, respectively, and one slide block 21 abuts against the guide inclined surface 1321 on one side correspondingly. In the initial state, the pushing block 13 is located inside the connecting seat 12, and the pair of clamping blocks 22 and the pair of sliding blocks 21 are in the farthest state, and the pair of clamping blocks 22 can completely clamp one bobbin 30. Then, the pushing block 13 is pushed to move from one side of the connecting seat 12 to one side of the mounting seat 11, at this time, the distance between the pair of guiding inclined surfaces 1321 is gradually reduced, the pair of sliding blocks 21 move in opposite directions under the pulling force of the first spring 23, so as to drive the pair of clamping blocks 22 to move in opposite directions, and the distance between the pair of clamping blocks 22 is also reduced. Finally, when the distance between the pair of clamping blocks 22 is reduced to separate the groove on the clamping blocks from the bobbin 30, the bobbin 30 can be removed from the pair of clamping blocks 22 or replaced.

Specifically, as shown in fig. 2, the mounting seat 11 in the mounting portion 10 provided by the present invention includes a base 111 for the pushing block 13 to move, a mounting platform 112 disposed at the front end of the base 111 and fixedly connected to the connecting seat 12, and a positioning seat 113 disposed at the rear end of the base 111 and fixedly connected to the winding machine. The base 111 of the mounting seat 11 is a cylindrical hollow cylindrical structure, and a cavity for accommodating the pushing block 13 to be placed and to move relatively is arranged inside the base 111. The mounting table 112 is disposed at the front end of the base 111 and is used for fixedly connecting the base 111 and the connection seat 12, the mounting table 112 is provided with a connection hole and a positioning hole which are fixedly connected with the connection seat 12 to ensure the fixed connection between the connection seat 12 and the mounting seat 11, and the positioning seat 113 is disposed at the rear end of the base 111 and is used for fixedly connecting the base 111 and the winding machine. The positioning seat 113 is a solid cylinder sleeved on the winding machine. The base 111, the mounting table 112 and the positioning base 113 of the mounting base 11 provided in this embodiment are integrally formed of 304 stainless steel.

Specifically, as shown in fig. 1 and 3, the mounting portion 10 of the present invention further includes a pair of sliding stoppers 14 extending from the inside of the base 111 to both sides of the base 111, and the sliding stoppers 14 are used for driving the pushing block 13 to move from the outside of the mounting seat 10, so as to control the pair of clamping portions 22. The slide stopper 14 is an L-shaped connecting member fixed to the pushing block 13, and includes a pushing plate 141 and a connecting plate 142 which are arranged perpendicular to each other. The pair of sliding stoppers 14 are fixed on both sides of the mounting seat 11 of the pushing block 13, and two sliding windows 114 through which the sliding stoppers 14 can extend are formed in the base 111. The pushing plate 141 extends from the sliding window 114 on the side of the base 111 of the mounting base 10, so that the pushing plate 141 can be pushed manually, and the pushing block 13 can be driven to move in the base 111. The sliding window 114 functions to limit the moving direction of the pusher block 13 in the base 111 and to limit the moving distance of the pusher block 13 in the base 111. The connecting plate 142 is fixed on the pushing block 13, and a first connecting hole 1421 is formed in the connecting plate 142 to fixedly connect the sliding block 14 and the pushing block 13. Wherein, in order to better fix the sliding block 14 on the pushing block 13, two positioning slots are provided on the pushing block 13, the connecting plate 142 of the sliding block 14 is fixed in the positioning slots, and then fixed on the pushing block 13 by a locking piece.

Further, as shown in fig. 1 and fig. 2, the mounting portion 10 further includes a second spring 15 disposed in the mounting seat 11, and the second spring 15 is disposed between the positioning seat 113 and the pushing block 13. The second spring 15 is disposed between the positioning seat 113 of the mounting seat 11 and the pushing block 13, and in an initial state, the pushing block 13 is pushed to a limit position of the clamping portion 20 by the second spring 15, and at this time, a distance between the pair of sliding blocks 21 is the largest, and the pair of clamping blocks 22 is in a clamping state. When the pair of clamping blocks 22 needs to be loosened, the sliding block 14 is only required to move from one side of the mounting platform 112 to one side of the positioning seat 113, the pushing block 13 is used for extruding the second spring 15, so that the lifting part 132 on the pushing block 13 moves to one side of the positioning seat 113, the pair of sliding blocks 21 move in opposite directions under the action of the first spring 23, the pair of clamping blocks 22 are driven to move in opposite directions, and the pair of clamping blocks 22 are separated from the coil framework 30 along with the reduction of the relative distance. As shown in fig. 2, a fourth mounting hole 1311 for inserting the second spring 15 is disposed on a side of the pushing block 13 close to the positioning seat 113, one end of the second spring 15 is inserted into the fourth mounting hole 1311, and the other end of the second spring 15 abuts against a bottom surface of the mounting seat 10 where the base 111 and the positioning seat 113 are connected, so that the second spring 15 can be kept relatively fixed in the base 111 of the mounting seat 11.

Further, as shown in fig. 1, the clamping portion 20 of the winding chuck 100 of the present invention further includes a supporting block 24 disposed between the pair of sliding blocks 21 and fixed on the connecting seat 12. The supporting block 24 is disposed between the pair of clamping blocks 22 and fixed to the connecting socket 12 by the locking member 27, so that the supporting block 24 does not move with the movement of the clamping blocks 22. The supporting block 24 includes a fixing plate 241 disposed between the pair of sliding blocks 21, a center top block 242 disposed on the upper surface of the fixing plate 241 and extending to between the pair of clamping blocks 22, and a pair of fixing blocks 243 disposed on both sides of the lower surface of the fixing plate 241 and fixedly connected to the connecting socket 12. The central top block 242 of the support block 24 is located between the pair of clamping blocks 22, and can be used to support the bobbin 30 clamped by the clamping blocks 22, especially to support and protect the bobbin 30 when the bobbin 30 rotates with the winding chuck 100. A plurality of third mounting holes 2431 are formed in the two fixing blocks 243 at the bottom of the fixing plate 241, and the supporting block 24 is fixed on the connecting seat 12 by passing through the third mounting holes 2431 through the locking member 27, so that the supporting block 24 is fixedly connected with the connecting seat 12.

Specifically, as shown in fig. 1, the sliding block 21 in the clamping portion 20 provided by the present invention includes a vertical sliding block 211 and a horizontal sliding block 212 that are perpendicular to each other, and a bearing 213 that is disposed on the vertical sliding block 211 and can abut against the guiding inclined plane 1321 of the pushing block 13, wherein the bearing 213 is movably connected to the bottom of the vertical sliding block 211 through a rotating shaft 214. The pair of sliding blocks 21 are oppositely arranged inside the bottom connection seat 12, and one side with the vertical sliding block 211 is close to the center of the connection seat 12 and is used for abutting against the jacking part 132 of the pushing block 13 in the connection seat 12. The bottom of the vertical sliding block 211 is provided with a groove for mounting the bearing 213, two sides of the groove are provided with first mounting holes 2111 for fixing the rotating shaft 214, the bearing 213 in the sliding block 21 is arranged in the groove at the bottom of the vertical sliding block 211, the rotating shaft 214 passes through the first mounting hole 2111, is inserted into the bearing 213 and then passes through the opposite first mounting hole 2111, the fixed connection between the bearing 213 and the vertical sliding block 211 is realized, and the outer circumferential surface of the bearing 213 can be abutted against the guide inclined surface 1321 of the pushing block 13. The vertical slider 211 of the slide block 21 is further provided with a second mounting hole 2112 into which the first spring 23 is inserted, on a side surface thereof close to the opposite slide block 21. The first spring 23 has one end inserted into the second mounting hole 2112 of the left slide block 21 and the other end inserted into the second mounting hole 2112 of the right slide block 21, so that the two slide blocks 21 can be simultaneously pushed to move toward each other in the horizontal direction.

Further, as shown in fig. 3, the clamping portion 20 of the winding chuck 100 of the present invention further includes a plurality of balls 25 disposed between the connecting seat 12 and the sliding block 21, the balls 25 are disposed between the connecting seat 12 and the pair of sliding blocks 21, so that the relative movement between the sliding block 21 and the connecting seat 12 is smoother and smoother.

Specifically, as shown in fig. 1, the connecting seat 12 is provided with a sliding slot 121 on a side close to the clamping portion 20 for the pair of sliding blocks 21 to horizontally slide, and a plurality of first grooves 1211 arranged at intervals are provided on an inner wall of the sliding slot 121. The first groove 1211 is parallel to the sliding groove 121, and the first groove 1211 is formed by two relatively inclined surfaces extending from two sides of the inner wall of the sliding groove 121, and the cross section of the first groove 1211 is in a triangular structure. Correspondingly, a plurality of second grooves 2121 arranged at intervals are provided on the side walls of the two sides of the horizontal slider 212 of the sliding block 21. The second groove 2121 is formed by two relatively inclined surfaces recessed from the side surface of the horizontal slider 212 toward the inner side of the slide block 21, and the cross section of the second groove 2121 is also triangular. When the sliding block 21 is inserted into the sliding slot 121 of the connecting seat 12, a sliding cavity for placing the plurality of balls 25 is defined between the first groove 1211 in the sliding slot 121 and the second groove 2121 of the sliding block 21. The section of the sliding cavity is a square section formed by splicing two triangular sections, and a plurality of balls 25 are uniformly distributed in the sliding cavity.

Specifically, as shown in fig. 1 and 3, the clamping portion 20 of the present invention further includes a blocking piece 26 disposed at two ends of the sliding block 21 for sealing the ball 25 in the sliding cavity. The blocking pieces 26 are respectively arranged on two sides of the sliding block 21 through locking pieces, so that the balls 25 in the sliding cavity are blocked from sliding out of the end face of the sliding block 21 in the horizontal moving process of the sliding block 21.

The utility model provides a winding chuck 100 can adjust the relative position of a pair of clamping blocks 22 by pushing the pushing block 13 in the mounting seat 11, realize the clamping to the coil frame, ensure the stability of the coil frame in the clamping state between a pair of clamping blocks 22, improve the winding efficiency of the winding machine, and improve the winding quality; and the relative position between a pair of grip blocks 22 can be adjusted through pushing the block 13, thus realize the centre gripping to the coil solid skeleton of different models, improve the suitability of the winding chuck 100, reduce the frequency and man-hour that the coiling machine changes to the winding chuck 100.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A winding chuck comprises a mounting part fixed on a winding machine and a clamping part arranged at the front end of the mounting part and used for clamping a coil framework, and is characterized in that the mounting part comprises a mounting seat fixed on the winding machine, a connecting seat fixed at the front end of the mounting seat and movably connected with the clamping part, and a pushing block extending from the mounting seat to the inside of the connecting seat; the clamping part comprises a pair of sliding blocks arranged in the connecting seat and abutted to the pushing blocks, a pair of clamping blocks fixedly connected with the sliding blocks and extending out of the front end of the connecting seat, and a first spring movably connected with the sliding blocks, and the pushing blocks are used for respectively abutting the sliding blocks to two sides of the connecting seat.

2. The winding clamp according to claim 1, wherein the pushing member comprises a base block disposed in the mounting seat and a lifting portion disposed in the connecting seat, the lifting portion is provided with two guide inclined surfaces disposed oppositely and abutting against the pair of sliding blocks, and a distance between the two guide inclined surfaces is gradually reduced from one side of the connecting seat to one side of the mounting seat.

3. The winding chuck according to claim 2, wherein the mounting seat comprises a base seat for moving the pushing block, a mounting platform disposed at the front end of the base seat and fixedly connected to the connecting seat, and a positioning seat disposed at the rear end of the base seat and fixedly connected to the winding machine.

4. The winding chuck according to claim 3, wherein the mounting portion further comprises a pair of sliding stoppers extending from the inside of the base to the outside of the base, the pair of sliding stoppers being fixed to both sides of the mounting seat of the pushing block, and the base is provided with two sliding windows through which the sliding stoppers can protrude.

5. The winding chuck according to claim 3, wherein said mounting portion further comprises a second spring disposed within said mounting seat, said second spring being disposed between said positioning seat and said pushing block.

6. The winding chuck according to claim 1, wherein the holding part further comprises a support block disposed between the pair of sliding blocks and fixed to the connecting seat, and the support block comprises a fixing plate disposed between the pair of sliding blocks, a center top block disposed on an upper surface of the fixing plate and extending between the pair of holding blocks, and a pair of fixing blocks disposed on both sides of a lower surface of the fixing plate and fixedly connected to the connecting seat.

7. The winding chuck according to claim 2, wherein the sliding block comprises a vertical sliding block and a horizontal sliding block which are arranged perpendicularly to each other, and a bearing which is arranged on the vertical sliding block and can be abutted against the guide inclined surface of the pushing block, and the bearing is movably connected to the bottom of the vertical sliding block through a rotating shaft.

8. The winding chuck according to claim 7, wherein the vertical slider has a first mounting hole for fixing the rotating shaft and a second mounting hole for inserting the first spring.

9. The winding chuck according to claim 7, wherein the clamping portion further comprises a plurality of balls disposed between the connecting seat and the sliding blocks, the connecting seat is provided with a sliding slot on a side near the clamping portion for the pair of sliding blocks to slide horizontally, the inner wall of the sliding slot is provided with a plurality of first grooves spaced apart from each other, the side walls of the horizontal sliding blocks of the sliding blocks are provided with a plurality of second grooves spaced apart from each other, and a sliding cavity for the plurality of balls to be placed is defined between the first grooves in the sliding slot and the second grooves of the sliding blocks.

10. The winding chuck according to claim 9, wherein the holding portion further comprises a stopper disposed at both ends of the sliding block for closing the balls in the sliding cavity.