Ball picking-up device chuck facilitating replacement of filament sets and ball picking-up device of ball picking-up device chuck
By designing a rotatable solid-wire base and crimping seat in the ball picker chuck, combining the structure of the threading groove, crimping groove and crimping assembly, combined with the guide cover and wire change mechanism, the problem of bending or deforming of the wire strip after a long time of use is solved, and the convenient replacement of the wire strip and anti-return position is achieved.
Patent Information
- Application Number
- CN202421885556.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-06
AI Technical Summary
The wire strips in the existing ball pickers are prone to bend or deform after long-term use, resulting in a larger gap between the wire strips, leaking the ball, and troublesome when replacing or repairing.
A ball picker chuck is designed to facilitate the replacement of wire string groups. It adopts a rotatable solid-wire base and wire crimping seat, which combines the threading groove, wire crimping groove and wire crimping assembly to fix and tighten the wire strips. The guide cover prevents the wire back to position, and a wire change mechanism is set to facilitate the replacement of wire strips.
It effectively prevents the return position and deformation of the wire strip group, simplifies the replacement process of the wire strip, and does not need to remove the entire chuck, making it easy to operate.
Smart Images
Figure CN222983654U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sports equipment, in particular to a ball-picking device chuck for facilitating the replacement of a wire group and a ball-picking device thereof. Background Art
[0002] At present, ball-picking devices have been widely used for quickly picking up small-volume round balls such as tennis balls and table tennis balls. By using a ball-picking device, the efficiency of picking up balls one by one manually can be much higher. Moreover, people only need to hold the handle or long handle to pick up the balls without bending down. When the ball-picking device is full of balls, the balls are then poured into the ball basket, which is very convenient for daily training projects that require multiple types of balls. In existing ball-picking devices, the main body of the ball-picking device is composed of two wire clamping discs and a wire group. During daily use, the wires are often bent or deformed after a long time of use, causing the gap between some wires to become larger and resulting in ball leakage. To solve this problem, currently, some products have adopted adding a pull rope or a reinforcing strip between the two wire clamping discs to provide tension and prevent the wires from extending to both sides and deforming quickly. However, such a structural design also has defects. On the one hand, it is very troublesome to install the reinforcing strip during assembly, and a very large force is required to install the reinforcing strip. On the other hand, if the wires in this type of ball-picking device are damaged, the entire chuck needs to be disassembled and reassembled one by one, or sent back to the factory for repair, which is also very troublesome. Summary of the Utility Model
[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a ball-picking device chuck for facilitating the replacement of a wire group and a ball-picking device thereof to solve the technical problems mentioned in the background art.
[0004] To solve the technical problems, the utility model is realized by adopting the following technical solutions:
[0005] A ball-picking device chuck for facilitating the replacement of a wire group includes a wire fixing base and a wire pressing base. The wire fixing base and the wire pressing base are rotatably arranged. The wire fixing base is provided with a wire passing groove and a wire pressing groove for respectively allowing a wire to pass through and being pressed. The wire pressing base is provided with a wire pressing assembly. The wire pressing assembly can press the wire when the wire passes through the wire passing groove or the wire pressing groove. A wire changing mechanism is further arranged on one side of the wire pressing base. The wire changing mechanism includes a wire changing groove and a locking head. A wire changing groove is arranged on one side of the wire pressing base. The wire changing groove corresponds to the position of the wire passing groove, and the locking head is matched and locked with the wire changing groove.
[0006] Specifically, it further includes a guiding cover. The guiding cover is detachably arranged on one side of the wire fixing base or the guiding cover is formed by extending outward from the side of the wire fixing base away from the wire pressing base. The guiding cover has a cover body that diffuses outward for spreading the wire outward.
[0007] Specifically, the guiding cover includes an inner cover body and an outer cover body. The inner cover body has an inwardly concave arc surface structure. One side of the wire fixing base is provided with a convex seat, one side of the inner cover body is provided with a clamping buckle, and one side of the convex seat is provided with a clamping hole. The clamping buckle is clamped with the clamping hole in cooperation, and the convex seat is fitted with the inner cover body in position. The outer cover body has an arc surface structure that conforms to guiding the wire strip towards the middle of the ball picker.
[0008] Specifically, it further includes a locking cover. The locking cover is detachably arranged on one side of the wire pressing seat, and the locking head is arranged on the outer side of the locking cover.
[0009] Specifically, the wire changing groove includes an inner through groove and an outer through port. The inner through groove is just matched and aligned with the main body of the wire threading groove, and the outer through port is just matched and aligned with the outer end entrance position of the wire threading groove. The locking head includes a covering piece and a locking insert piece. The covering piece is just fitted and covered with the outer through port, and the locking insert piece can just be inserted into the wire threading groove to prevent the wire pressing seat from rotating.
[0010] Specifically, the wire threading groove includes an outer ring groove and an inner ring groove. A frustum is provided on the outer side of the wire fixing base. The wire pressing assembly includes an outer pressing coil and an inner pressing coil. The outer pressing coil is in butt-joint and pressing fit with the frustum, and the inner pressing coil is in butt-joint and pressing fit with the wire pressing groove.
[0011] Specifically, the outer ring groove is a horizontal groove for the wire strip to be inserted in parallel when passing through. There is a transition inclined surface that rises upward or sinks downward between the inner ring groove and the outer ring groove. The inner ring groove is used to change the direction of the end of the wire strip upward or downward. Fixing holes and wire fixing grooves are arranged at intervals on the inner side of the wire threading groove.
[0012] Specifically, a main rotation hole is provided on the inner side of the wire fixing base. A first fixing hole is provided on one side of the main rotation hole. A main rotating shaft is provided on the inner side of the wire pressing seat. A screw hole is provided in the main rotating shaft. A second fixing hole is provided on one side of the main rotating shaft. The main rotating shaft passes through the main rotation hole and is assembled with a bolt to complete the rotatable assembly of the wire pressing seat and the wire fixing base.
[0013] Specifically, a secondary rotating shaft is provided on the side of the wire pressing seat away from the main rotating shaft. A secondary rotation hole is provided on the locking cover. A third fixing hole is also provided on the locking cover. The first fixing hole, the second fixing hole, and the third fixing hole are coaxially arranged.
[0014] Specifically, a ball picker has a first clamping plate, a second clamping plate, and a wire strip group. The wire strip group is inserted into the first clamping plate and the second clamping plate in a circumferential array. It further includes a rotating rod and a handle rod. The two ends of the rotating rod are respectively rotatably fitted with the first clamping plate and the second clamping plate. The handle rod is connected to the middle of the rotating rod in a plug-in or fixed manner. Both the first clamping plate and the second clamping plate are a kind of ball picker clamping plate structure for facilitating the replacement of the wire strip group as described above.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] The present utility model provides a ball-picking device chuck and a ball-picking device. In the ball-picking device chuck, a wire-fixing base and a wire-pressing seat that can rotate relative to each other are provided. A wire-passing groove and a wire-pressing groove are provided on the wire-fixing base. The wire-passing groove is used for the wire strip to pass through, and the wire-pressing groove presses the wire strip through a wire-pressing component on the wire-pressing seat on one side. A guiding cover is also provided on one side of the wire-fixing base. The guiding cover spreads outwards, and can spread out and open the wire strip group, so as to achieve the same technical effect as the traditional reinforcing strip to prevent the wire strip group from extending to both sides. Moreover, the installation of the guiding cover only needs to be inserted or snapped into the wire-fixing base, which is very convenient. In addition, in order to facilitate the replacement of the wire strip, a wire-changing mechanism is provided in this patent. The wire-changing mechanism includes a wire-changing groove and a locking head. The locking head can lock and close the wire-changing groove. When locking, it can be inserted downward to lock the wire-passing groove, so as to prevent rotation between the wire-pressing seat and the wire-fixing base when the wire does not need to be changed. When the wire needs to be changed, only need to remove the locking head (remove the lock cover), and then rotate the wire-changing groove to the position corresponding to the wire-passing groove of the wire strip to be changed, and the wire strip can be directly removed. After replacing the new wire strip, lock the lock cover back. The operation is very convenient and there is no need to disassemble and reassemble the entire chuck. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 : Overall structure assembly of the chuck of the present utility model Figure 1 ;
[0018] Figure 2 : Overall structure assembly of the chuck of the present utility model Figure 2 ;
[0019] Figure 3 : Overall structure disassembly of the chuck of the present utility model Figure 1 ;
[0020] Figure 4 : Overall structure disassembly of the chuck of the present utility model Figure 2 ;
[0021] Figure 5 : Radial sectional view of the chuck of the present utility model;
[0022] Figure 6 : Structural schematic diagram of the wire-fixing base;
[0023] Figure 7 : Structural schematic diagram of the wire-pressing seat;
[0024] Figure 8 : Structural schematic diagram of the lock cover;
[0025] Figure 9 : Structural schematic diagram of the ball-picking device of the present utility model;
[0026] In the figure: fixed wire base 1, wire pressing base 2, wire threading groove 11, wire pressing groove 12, wire pressing assembly 30, wire changing mechanism 40, wire changing groove 41, locking head 42, guiding cover 5, inner housing 51, outer housing 52, convex seat 13, clamping buckle 511, clamping hole 131, lock cover 6, inner through groove 411, outer through port 412, covering piece 421, locking insert piece 422, outer ring groove 111, inner ring groove 112, frustum 14, outer pressure coil 31, inner pressure coil 32, fixed wire hole 15, fixed wire groove 16, main rotation hole 17, first fixing hole 18, main rotating shaft 21, screw hole 211, second fixing hole 22, auxiliary rotating shaft 23, auxiliary rotation hole 61, third fixing hole 62, first chuck 7, second chuck 8, wire strip group 100, rotating rod 200, handle rod 300. Specific embodiments
[0027] Next, in combination with the accompanying drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of non-conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.
[0028] Reference Figures 1 to 9 :
[0029] The present invention discloses a ball picking device chuck for facilitating the replacement of a wire strip group, including a fixed wire base 1 and a wire pressing base 2. The fixed wire base 1 and the wire pressing base 2 are rotatably arranged. The rotation form can adopt the rotation of a rotating shaft and a rotating hole, or adopt a bearing connection, etc. The fixed wire base 1 is provided with a wire threading groove 11 and a wire pressing groove 12 for respectively threading and pressing the wire strip. Among them, the wire threading groove 11 and the wire pressing groove 12 intersect with each other. The wire threading groove 11 is arranged to match the penetration of each wire strip, and the wire threading groove 11 is circumferentially and arrayedly distributed around the outer layer of the fixed wire base 1. In order to press the wire strip after it penetrates into the wire threading groove 11, the wire pressing base 2 is provided with a wire pressing assembly 30. When the wire strip on the wire pressing base 2 penetrates into the wire threading groove 11 or the wire pressing groove 12, the wire strip is pressed. In order to quickly replace the damaged or deformed wire strip and avoid the entire wire clamping disc from being disassembled and reassembled again, here, a wire changing mechanism 40 is further provided on one side of the wire pressing base 2. The wire changing mechanism 40 includes a wire changing groove 41 and a locking head 42. A wire changing groove 41 is provided on one side of the wire pressing base 2. The wire changing groove 41 corresponds to the position of the wire threading groove 11, and the locking head 42 is matched and locked with the wire changing groove 41.
[0030] Specifically, the wire strip is made of iron wire or stainless steel wire, which has relatively large elastic force. When the two ends are respectively inserted into the wire clamping discs on both sides, the wire fixing base 1 of the wire clamping disc has a certain diameter, which will cause the wire strip to bend toward the middle. However, after a long time of use, the elastic force of the wire strip returns to its original position, and the clamping disc will extend to both sides. In this way, the originally arched wire strip group 100 will gradually become flat. In order to solve this problem and to facilitate installation, a guide cover 5 is also provided in the clamping disc. The guide cover 5 is detachably arranged on one side of the wire fixing base 1 or the guide cover 5 is formed by extending outward from the side of the wire fixing base 1 away from the wire pressing seat 2 (that is, it is integrally formed with the wire fixing base 1). The guide cover 5 has an outwardly diffused cover body for expanding the wire strip outward, and the wire strip group 100 is not easy to return to its original position through the secondary outward expansion of the guide cover 5 (one of which is the diameter of the wire fixing base itself that can expand the wire strip group), so that the wire strip group 100 is not easy to return to its original position.
[0031] Specifically, the guide cover 5 includes an inner cover body 51 and an outer cover body 52, the inner cover body 51 has an inwardly concave arc surface structure, a convex seat 13 is provided on one side of the fixed line base 1, and the convex seat 13 has an outwardly convex arc surface shape, a snap buckle 511 is provided on one side of the inner cover body 51, and a snap hole 131 is provided on one side of the convex seat 13, the snap buckle 511 is engaged with the snap hole 131, and the convex seat 13 is engaged with the inner cover body 51. In some cases, it can also be changed to The screws are tightened, so that the wire can seamlessly enter the inner circle of the guide cover 5 after coming out of the wire fixing base 1, and begin to transition to the outer circle arc surface through its inner circle, thereby stretching the entire wire. The outer cover body 52 has an arc surface structure that is suitable for guiding the wire to the middle of the ball picker. As a subsequent improved embodiment, a guide groove (not shown) arranged in the same direction as the wire group is also provided on the outer surface of the guide cover 5. The guide groove can help the wire group to be stretched outward when embedded.
[0032] Specifically, the locking head 42 can be a separate locking plug structure, or a structure arranged on a certain component. Here, for the convenience of assembly and later aesthetic considerations, a locking cover 6 is preferably provided, and the locking cover 6 is detachably arranged on one side of the wire pressing seat 2, and the locking head 42 is arranged at the outer edge position of the locking cover 6. Specifically, the wire changing slot 41 includes an inner through slot 411 and an outer through port 412, wherein the inner through slot 411 just matches the main body (the entire slot body) of the threading slot 11. The outer opening 412 just matches the outer end entrance position of the wire threading groove 11, and the locking head 42 includes a covering piece 421 and a locking piece 422, wherein the covering piece 421 just fits in with the outer opening 412, and the locking piece 422 can just be inserted into the wire threading groove 11 to prevent the wire crimping seat 2 from rotating relative to the wire fixing base 1. When the locking cover 6 is removed and the locking head 42 is taken out, there is no limit between the wire crimping seat 2 and the wire fixing base 1, so that the rotation can be restored, and the wire changing operation can be performed at this time.
[0033] Specifically, in order to be able to rotate the wire pressing seat 2 more accurately, conveniently and quickly when the wire strip needs to be replaced, anti-slip patterns are provided on the outer side of the wire pressing seat 2.
[0034] Specifically, the wire threading groove 11 includes an outer ring groove 111 and an inner ring groove 112. A frustum 14 is provided on the outer side of the wire fixing base 1. The wire pressing assembly includes an outer pressing coil 31 and an inner pressing coil 32. The outer pressing coil 31 is in alignment and pressing fit with the frustum 14, and the inner pressing coil 32 is in alignment and pressing fit with the wire pressing groove 12. As an embodiment of subsequent improvement, the outer pressing coil 31 is provided with a wire slot or a wire guiding slot, and the wire strips are stuck in the wire guiding slots one by one, so as to provide more fixing routes for the wire strips.
[0035] Specifically, the outer ring groove 111 is a horizontal groove for the wire strip to be inserted in parallel or horizontally when passing through. There is a transition inclined surface that rises upward or sinks downward between the inner ring groove 112 and the outer ring groove 111. The inner ring groove 112 is used to change the direction of the end of the wire strip upward or downward. The more turns the end of the wire strip makes in the wire clamping disc, the greater the force to resist being pulled out. Specifically, in order to have a positioning point when the end of the wire strip enters the wire fixing base 1, here, a wire fixing hole 15 and a wire fixing groove 16 are provided on the inner side of the wire threading groove 11. The wire fixing holes 15 and the wire fixing grooves 16 are arranged at intervals. The wire fixing hole 15 is a downward opening into which the end of the wire strip can be inserted and then bent to form the first bending point. Subsequently, with the pressing of multiple pressing coils and the bending of the wire threading groove 11, a multi-channel mechanism is formed to increase the fixing force of the wire strip group. The wire fixing groove 16 is a limiting groove extending from the middle of the wire threading groove 11. The width of the wire fixing groove 16 just matches or has an interference fit with the diameter of the wire strip. The insertion of the wire strip into the wire fixing groove 16 is also a positioning fit. Specifically, there is a difference in the length of the wire strip used between inserting the wire strip into the wire fixing hole 15 and feeding it into the wire fixing groove 16. This creates a difference in the height position of the wire strip group 100 guided to the middle. Also, because the wire fixing groove 16 and the wire fixing hole 15 are arranged in a staggered or spaced manner, such as two wire fixing holes 15 are paired with one wire fixing groove 16, the spaced arrangement will form a height difference in the middle part of the wire strip group 100. Since the ball needs a difference in width and height / diameter between two adjacent wire strips when entering the ball picker, this can make it easier for the ball to enter.
[0036] Specifically, a main rotating hole 17 is provided on the inner side of the wire fixing base 1, a first fixing hole 18 is provided on one side of the main rotating hole 17, a main rotating shaft 21 is provided on the inner side of the wire pressing seat 2, a screw hole 211 is provided in the main rotating shaft 21, and a second fixing hole 22 is provided on one side of the main rotating shaft 21. The main rotating shaft 21 passes through the main rotating hole 17 and cooperates with bolts to complete the rotatable assembly of the wire pressing seat 2 and the wire fixing base 1. The bolts can cooperate with gaskets or bearings during installation. The size of the bolts is designed according to the size of the screw hole 211, specifically to prevent the main rotating shaft 21 from falling out of the main rotating hole 17.
[0037] Specifically, the side of the wire pressing seat 2 away from the main rotating shaft 21 is provided with a secondary rotating shaft 23, the locking cover 6 is provided with a secondary rotating hole 61, and the locking cover 6 is also provided with a third fixing hole 62, wherein the first fixing hole 18, the second fixing hole 22 and the third fixing hole 62 are coaxially arranged. When in use, it is only necessary to pass the fixing screw through the third fixing hole 62, the second fixing hole 22 and the first fixing hole 18 in sequence to complete the locking of the locking cover 6, the wire pressing seat 2 and the wire fixing base 1, and at the same time, the locking head 42 is combined with the alignment insertion of the wire replacement groove 41. At this time, since the locking piece 422 in the locking head 42 is just inserted into the threading groove 11, the threading groove 11 is located at the wire fixing The base 1 is so fixed that the locking cover 6, the wire crimping seat 2 and the wire fixing base 1 cannot rotate. When the wire needs to be changed, remove the fixing screw, and then take out the locking cover 6 and the locking head 42. Then the wire crimping seat 2 lacks a limit and can be rotated relative to the wire fixing base 1. When the wire changing slot 41 is rotated to the position of the wire threading slot 11 where the corresponding wire to be replaced is located, the wire is directly pulled out, and then a new wire is inserted. Then the wire crimping seat 2 is rotated, and the locking cover 6 is installed. When installing the locking cover 6, align the locking head 42 with any position of the wire threading slot 11 and insert it. Then tighten the screw to complete the wire changing step. The whole process is very convenient to operate.
[0038] It should be added that the locking head 42 is preferably configured as a conical structure, and the wire changing slot 41 is also a conical structure, so that the upper opening thereof is wider and the locking head 42 can be easily inserted.
[0039] The utility model also discloses a ball picker, which comprises a first chuck 7, a second chuck 8 and a silk thread group 100, wherein the silk thread group 100 is inserted into the first chuck 7 and the second chuck 8 in a circular array, and further comprises a rotating rod 200 and a handle bar 300, wherein the two ends of the rotating rod 200 are rotatably matched with the first chuck 7 and the second chuck 8 respectively, and the handle bar 300 is plug-in or fixedly connected to the middle of the rotating rod 200, and the first chuck 7 and the second chuck 8 are both the aforementioned ball picker chuck structure that is convenient for replacing the silk thread group.
[0040] The above embodiments are only the preferred embodiments of the present utility model, and the scope of protection of the present utility model cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model fall within the scope of protection required by the present utility model.
Claims
1. A ball picker chuck for facilitating replacement of a wire group, characterized in that: It includes a wire fixing base and a wire pressing seat, the wire fixing base and the wire pressing seat are rotatably arranged, the wire fixing base is provided with a wire threading groove and a wire pressing groove for respectively inserting and pressing the wire strip, the wire pressing seat is provided with a wire pressing assembly, the wire pressing assembly can press the wire strip when the wire strip is inserted into the wire threading groove or the wire pressing groove, one side of the wire pressing seat is also provided with a wire changing mechanism, the wire changing mechanism includes a wire changing groove and a locking head, one side of the wire pressing seat is provided with a wire changing groove, the wire changing groove corresponds to the position of the wire threading groove, and the locking head is matched and locked with the wire changing groove.
2. A ball picker chuck for facilitating replacement of a wire group as claimed in claim 1, characterized in that: It also includes a guide cover, which is detachably arranged on one side of the wire fixing base or is formed by extending outward from the side of the wire fixing base away from the wire pressing seat. The guide cover has an outwardly diffused cover body for spreading the wire strip outward.
3. A ball picker chuck for facilitating replacement of a wire group as claimed in claim 2, characterized in that: The guide cover includes an inner cover body and an outer cover body, the inner cover body has an inwardly concave arc surface structure, a convex seat is provided on one side of the wire fixing base, a snap buckle is provided on one side of the inner cover body, a snap hole is provided on one side of the convex seat, the snap buckle is engaged with the snap hole, the convex seat is engaged with the inner cover body, and the outer cover body has an arc surface structure suitable for guiding the wire strip to the middle of the ball picker.
4. A ball picker chuck for facilitating replacement of a wire group as claimed in claim 1, characterized in that: It also includes a locking cover, which is detachably arranged on one side of the wire crimping seat, and the locking head is arranged on the outer side of the locking cover.
5. A ball picker chuck for facilitating replacement of a wire group as claimed in claim 4, characterized in that: The wire changing slot includes an inner through slot and an outer through opening, wherein the inner through slot just matches and aligns with the main body of the wire threading slot, and the outer through opening just matches and aligns with the outer end entrance position of the wire threading slot, and the locking head includes a covering piece and a locking piece, wherein the covering piece just fits and covers the outer through opening, and the locking piece can just be inserted into the wire threading slot to prevent the wire pressing seat from rotating.
6. A ball picker chuck for facilitating replacement of a wire group as claimed in claim 1, characterized in that: The wire threading groove includes an outer ring groove and an inner ring groove, a truncated table is provided on the outer side of the wire fixing base, and the wire pressing assembly includes an outer pressure coil and an inner pressure coil, wherein the outer pressure coil is pressed and matched with the truncated table, and the inner pressure coil is pressed and matched with the wire pressing groove.
7. A ball picker chuck for facilitating replacement of a wire group as claimed in claim 6, characterized in that: The outer ring groove is a horizontal groove, which is used for parallel insertion of the wire strip. There is a transition slope that is raised upward or recessed downward between the inner ring groove and the outer ring groove. The inner ring groove is used to change the direction of the wire strip end upward or downward. The inner side of the threading groove is provided with a wire fixing hole and a wire fixing groove, and the wire fixing hole and the wire fixing groove are arranged at intervals.
8. A ball picker chuck for facilitating replacement of a wire group as claimed in claim 5, characterized in that: A main rotating hole is provided on the inner side of the wire fixing base, a first fixing hole is provided on one side of the main rotating hole, a main rotating shaft is provided on the inner side of the wire pressing seat, a screw hole is provided in the main rotating shaft, a second fixing hole is provided on one side of the main rotating shaft, and the main rotating shaft passes through the main rotating hole and cooperates with the bolt to complete the rotatable assembly of the wire pressing seat and the wire fixing base.
9. A ball picker chuck for facilitating replacement of a wire group as claimed in claim 8, characterized in that: A secondary rotating shaft is provided on the side of the wire crimping seat away from the main rotating shaft, a secondary rotating hole is provided on the locking cover, and a third fixing hole is also provided on the locking cover, wherein the first fixing hole, the second fixing hole and the third fixing hole are coaxially arranged.
10. A ball picker, comprising a first chuck, a second chuck and a wire group, wherein the wire group is inserted into the first chuck and the second chuck in a circumferential array, and further comprising a rotating rod and a handle, wherein the two ends of the rotating rod are rotatably matched with the first chuck and the second chuck respectively, and the handle is plug-in or fixedly connected to the middle of the rotating rod, characterized in that: The first chuck and the second chuck are both ball picker chuck structures for facilitating replacement of wire thread groups as described in any one of claims 1 to 9.