Threading cylinder

By designing a threading barrel with a fixed half-barrel and a movable half-barrel, combined with an elastic frame and a limiting wheel structure, the problem of low signal line threading efficiency is solved, and convenient and efficient threading operation is achieved.

CN223348263UActive Publication Date: 2025-09-16SONGZI YINGKE ELECTRONICS CO LTD
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Patent Information

Application Number
CN202422042534.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-21
Publication Date
2025-09-16
Estimated Expiration
2034-08-21

AI Technical Summary

Technical Problem

The signal line is threaded through the threading barrel in an inefficient manner, resulting in a long operation time and affecting production efficiency.

Method used

A threading barrel consisting of a fixed half barrel and a movable half barrel is designed. Through an elastic frame and a limiting wheel structure, combined with a fixing mechanism and a locking barrel, convenient threading and stable fixation of the core wire are achieved.

Benefits of technology

The convenience and efficiency of the threading operation are improved, the threading process of the core wire in the threading barrel is simplified, and the operation time is reduced.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a threading cylinder, which comprises a fixed half cylinder and a movable half cylinder, the vertical edge of one side of the fixed half cylinder is hinged with the vertical edge of one side of the movable half cylinder, the side part of the fixed half cylinder is provided with a first half groove, and the side part of the movable half cylinder is provided with a second half groove; the two elastic frames are arranged at the bottom of the fixed half cylinder, a limiting wheel is rotationally arranged on each elastic frame, and an annular limiting groove is formed in the outer wall of each limiting wheel; the fixing mechanism is used for fixing the positions of the fixed half cylinder and the movable half cylinder, and when the fixing mechanism fixes the fixed half cylinder and the movable half cylinder, the first half groove and the second half groove form a cylindrical threading hole. The threading cylinder provided by the utility model can improve the threading efficiency.
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Description

Technical Field

[0001] The utility model belongs to the technical field of signal line production and relates to a wire threading barrel. Background Art

[0002] Signal lines primarily refer to the circuits used to transmit sensor and control information within electrical control circuits. Signal lines often consist of multiple cables arranged as one or more bundles of transmission lines, or they can be traces arranged on printed circuit boards. With the continuous advancement of technology and applications, signal lines have evolved from metal carriers to other carriers, such as optical cables.

[0003] Common signal cables mainly include an outer protective layer and an inner core wire. During the production process of some signal cables, aluminum foil is also wrapped around the outer wall of the core wire to achieve a signal shielding effect. The common structure of wrapped aluminum foil mainly includes a threading barrel and an aluminum foil winding disk located below the threading barrel. Because the core wire is very long, when wrapping aluminum foil around the core wire, it is first necessary to put many aluminum foil disks (small width and long length) on the outer wall of the threading barrel, and then pass the core wire through the middle of the winding disk and the threading barrel from bottom to top. The core wire is then pulled upward and passed through the threading barrel. At the same time, the aluminum foil disk rotates and wraps the aluminum foil around the core wire. When a roll of aluminum foil is used up, just move the aluminum foil at the bottom of the threading barrel outer wall vertically to the aluminum foil disk, and then continue wrapping the aluminum foil. There are two limiting wheels at the bottom of the threading barrel, one outer wall has an annular groove, and the other outer wall is smooth. Before the core wire enters the threading barrel, it will first pass between the two limiting wheels, and the two limiting wheels will limit and guide the core wire.

[0004] Since the threading barrel has a certain length, it is usually necessary to use a tool (such as a wire with a hook, or an electric wire as a guide) to pass it through the threading barrel from top to bottom, then connect the top of the core wire to the tool wire, and then pull the tool wire upwards to pull the core wire through the threading barrel through the tool wire, and finally separate the core wire from the tool wire. Although this method can pass the core wire through the threading barrel, due to the long length of the threading barrel and the small diameter of the middle hole, the hardness of the tool wire is usually also low. Therefore, the actual operation still takes a certain amount of time, resulting in low threading efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a threading barrel, aiming to solve the problem of low threading efficiency.

[0006] In order to solve the above technical problems, the utility model provides a threading barrel, comprising:

[0007] A fixed half-cylinder and a movable half-cylinder, wherein a vertical edge of one side of the fixed half-cylinder is hinged to a vertical edge of one side of the movable half-cylinder, a first half-groove is formed on the side of the fixed half-cylinder, and a second half-groove is formed on the side of the movable half-cylinder;

[0008] Elastic racks, two of which are provided at the bottom of the fixed half-cylinder, each of which is rotatably provided with a limiting wheel, and an outer wall of one of the limiting wheels is provided with an annular limiting groove;

[0009] A fixing mechanism is used to fix the positions of the fixed half-cylinder and the movable half-cylinder. When the fixing mechanism fixes the fixed half-cylinder and the movable half-cylinder, the first half-slot and the second half-slot form a cylindrical threading hole.

[0010] The utility model is further configured such that the fixing mechanism includes a horizontal U-shaped operating portion, fixing portions are vertically provided at the bottoms of both ends of the operating portion, a first fixing seat is provided on the outer side of the bottom of the fixed half-cylinder, and a second fixing seat is provided on the outer side of the bottom of the movable half-cylinder, and holes for inserting the fixing portions are provided on the tops of the first fixing seat and the second fixing seat.

[0011] The present invention is further configured such that a connecting portion is vertically provided on a side of the fixed half-cylinder away from the movable half-cylinder.

[0012] The present invention is further configured such that a plurality of aluminum foil support plates are horizontally arranged on a side of the fixed half cylinder away from the movable half cylinder.

[0013] The present invention is further configured such that a semi-arc-shaped first semi-cylinder is vertically provided on the top of the fixed semi-cylinder, a third semi-groove is provided on the side of the first semi-cylinder to match the first semi-groove, and the radius of the first semi-cylinder is smaller than the radius of the top of the fixed semi-cylinder; a semi-arc-shaped second semi-cylinder is vertically provided on the top of the movable semi-cylinder, a fourth semi-groove is provided on the side of the second semi-cylinder to match the second semi-groove, and the radius of the second semi-cylinder is smaller than the radius of the top of the movable semi-cylinder;

[0014] A first transition portion and a first support portion are vertically provided on the outer wall of the first semi-cylinder. The axis of the cross section of the first support portion is collinear with the axis of the first semi-cylinder. An arc-shaped transition is formed between one outer edge of the first transition portion and one outer edge of the first transition portion. The thickness of the first transition portion decreases as the distance from the first support portion increases.

[0015] A second transition portion and a second support portion are vertically provided on the outer wall of the second semi-cylinder. The axis of the cross section of the second support portion is collinear with the axis of the second semi-cylinder. An arc-shaped transition is formed between the outer edge of one side of the second transition portion and the outer edge of one side of the second transition portion. The thickness of the second transition portion decreases as the distance from the second support portion increases. The first support portion, the first transition portion, the second support portion, and the second transition portion are arranged in sequence in a ring shape.

[0016] The locking cylinder further comprises a locking cylinder, wherein a locking hole is formed in the middle of the locking cylinder, and the bottom thereof movably contacts the tops of the fixed half-cylinder and the movable half-cylinder, a guide portion and a fitting portion are vertically provided in the locking hole, the axis of the fitting portion is colinear with the axis of the locking hole, an arc-shaped transition is formed between an inner edge of one side of the guide portion and an inner edge of one side of the fitting portion, a thickness of the guide portion decreases as the distance from the fitting portion increases, two guide portions and two fitting portions are provided, and the locking cylinder comprises a first state and a second state;

[0017] When the locking cylinder is in the first state, one pair of the guide portions and the fitting portion is opposite to the first transition portion, and another pair of the guide portions and the fitting portion is opposite to the second transition portion, and the first transition portion, the first supporting portion, the second transition portion and the second supporting portion are all separated from the guide portion, the fitting portion and the locking cylinder;

[0018] When the locking cylinder is in the second state, the two fitting portions fit respectively against outer walls of the first supporting portion and the second supporting portion.

[0019] The present invention is further configured such that the tops of the first transition portion, the first support portion, the second transition portion, and the second support portion are all chamfered or rounded.

[0020] The present invention is further configured such that a first indicator ball is provided on the outer wall of the locking cylinder, and a second indicator ball is provided on the outer wall of the movable half cylinder. When the first indicator ball is located above the second indicator ball, the locking cylinder is in a first state.

[0021] The present invention is further configured such that an indicator rod is vertically provided at the bottom of the locking cylinder, and a termination portion is provided on the side wall of the movable half cylinder. When the indicator rod abuts against a side of the termination plate close to the connecting portion, the locking cylinder is in a first state; and when the indicator rod abuts against a side of the connecting plate close to the termination plate, the locking cylinder is in a second state.

[0022] Compared with the prior art, the present invention provides a threading drum. When in use, the fixed half-drum is fixed to the equipment frame (connected by the connecting part); then when the core wire is passed through the threading hole, it is first necessary to put multiple rolls of aluminum foil on the aluminum foil disc, then open the fixing mechanism, rotate the movable half-drum outward, so that the fixed half-drum and the movable half-drum are in a separated state; then the core wire is passed through the middle of the aluminum foil and the aluminum foil disc from bottom to top, and then directly pulled through the fixed half-drum and the movable half-drum, so that the core wire fits in the first half groove inside; then rotate the movable half-cylinder and make the movable half-cylinder fit on the fixed half-cylinder, and use a fixing mechanism to fix the movable half-cylinder and the fixed half-cylinder. At this time, the core wire is located in the threading hole and can be pulled downstream; after the core wire is pulled, it is necessary to move the multiple disks of aluminum foil upwards, and put the aluminum foil to be used on the fixed half-cylinder and the movable half-cylinder, and the bottom aluminum foil is fixed to the aluminum foil disk, waiting to be used for winding the core wire; it should also be understood that the aluminum foil disk, aluminum foil and other structures are all existing technologies and need not be elaborated here.

[0023] At the same time, when pulling the core wire, the free end of the core wire can be passed through the two limiting wheels from bottom to top, or after the core wire is pulled, it can be clamped between the two limiting wheels from the side (the elastic frame is elastic, and the elastic frame can be bent outward to clamp the core wire between the limiting wheels; and one of the limiting grooves can limit the core wire).

[0024] Since when passing the core wire through the threading hole, you only need to open the movable half-cylinder, and after the core wire is inserted into the first half groove, rotate the movable half-cylinder to make it fit and connect with the fixed half-cylinder, the operation convenience and efficiency are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of a threading barrel of the utility model. Figure 1 ;

[0026] Figure 2 yes Figure 1 Enlarged view of part A;

[0027] Figure 3 yes Figure 1 Enlarged view of part B;

[0028] Figure 4 This is a schematic diagram of the structure of an embodiment of a threading barrel of the utility model. Figure 2 ;

[0029] Figure 5 yes Figure 4 Enlarged view of part C;

[0030] Figure 6 yes Figure 4 Enlarged view of part D in the middle;

[0031] Figure 7 This is a schematic diagram of the structure of an embodiment of a threading barrel of the utility model. Figure 3 ;

[0032] Figure 8 This is a top view of an embodiment of a threading barrel of the present utility model;

[0033] Figure 9 This is a cross-sectional view of an embodiment of a first semi-cylinder and a second semi-cylinder in a threading barrel of the present invention;

[0034] Figure 10 It is a schematic diagram of an embodiment of a locking cylinder in a threading cylinder of the present invention.

[0035] Among them, 1. fixed half cylinder; 2. movable half cylinder; 3. first half groove; 4. second half groove; 5. elastic frame; 6. limiting wheel; 7. limiting groove; 8. operating part; 9. fixing part; 10. first fixing seat; 11. second fixing seat; 12. connecting part; 13. aluminum foil supporting plate; 14. first semi-cylinder; 15. third half groove; 16. second semi-cylinder; 17. fourth half groove; 18. first transition part; 19. first supporting part; 20. second transition part; 21. second supporting part; 22. locking cylinder; 23. locking hole; 24. guiding part; 25. fitting part; 26. first indicator ball; 27. second indicator ball; 28. indicator rod; 29. ​​termination part; 30. supporting body. DETAILED DESCRIPTION

[0036] The following is a detailed description of the threading reel proposed in this utility model, combined with the accompanying drawings and specific embodiments. The advantages and features of this utility model will become more apparent from the following description. It should be noted that the drawings are highly simplified and not to exact scale, and are intended solely to facilitate and clarify the description of the embodiments of this utility model. Identical or similar reference numerals in the drawings represent identical or similar components.

[0037] A threading spool, such as Figures 1 to 10 Shown, including:

[0038] A fixed half-cylinder 1 and a movable half-cylinder 2, wherein a vertical edge of one side of the fixed half-cylinder 1 is hingedly connected to a vertical edge of one side of the movable half-cylinder 2, a first half-slot 3 is formed on the side of the fixed half-cylinder 1, and a second half-slot 4 is formed on the side of the movable half-cylinder 2;

[0039] Elastic racks 5, two of which are provided at the bottom of the fixed half-cylinder 1, each of which has a limiting wheel 6 rotatably provided thereon, and an annular limiting groove 7 is provided on the outer wall of one of the limiting wheels 6;

[0040] A fixing mechanism is used to fix the positions of the fixed half-cylinder 1 and the movable half-cylinder 2. When the fixing mechanism fixes the fixed half-cylinder 1 and the movable half-cylinder 2, the first half-slot 3 and the second half-slot 4 form a cylindrical threading hole.

[0041] The fixing mechanism includes a horizontal U-shaped operating part 8, and fixing parts 9 are vertically provided at the bottom of both ends of the operating part 8. A first fixing seat 10 is provided on the outer side of the bottom of the fixed half cylinder 1, and a second fixing seat 11 is provided on the outer side of the bottom of the movable half cylinder 2. The tops of the first fixing seat 10 and the second fixing seat 11 are both provided with holes for inserting the fixing part 9.

[0042] A connecting portion 12 is vertically provided on a side of the fixed half-cylinder 1 facing away from the movable half-cylinder 2 .

[0043] A plurality of aluminum foil support plates 13 are horizontally arranged on one side of the fixed half cylinder 1 facing away from the movable half cylinder 2 .

[0044] A semicircular first semi-cylinder 14 is vertically provided on the top of the fixed semi-cylinder 1. A third semi-slot 15 is provided on the side of the first semi-cylinder 14 to match the first semi-slot 3. The radius of the first semi-cylinder 14 is smaller than the radius of the top of the fixed semi-cylinder 1. A semicircular second semi-cylinder 16 is vertically provided on the top of the movable semi-cylinder 2. A fourth semi-slot 17 is provided on the side of the second semi-cylinder 16 to match the second semi-slot 4. The radius of the second semi-cylinder 16 is smaller than the radius of the top of the movable semi-cylinder 2.

[0045] A first transition portion 18 and a first support portion 19 are vertically provided on the outer wall of the first semi-cylinder 14. The axis of the cross section of the first support portion 19 is collinear with the axis of the first semi-cylinder 14. An arc-shaped transition is formed between the outer edge of one side of the first transition portion 18 and the outer edge of the other side of the first transition portion 18. The thickness of the first transition portion 18 decreases as the distance from the first support portion 19 increases.

[0046] A second transition portion 20 and a second support portion 21 are vertically provided on the outer wall of the second semi-cylinder 16. The axis of the cross section of the second support portion 21 is collinear with the axis of the second semi-cylinder 16. An arc-shaped transition is formed between the outer edge of one side of the second transition portion 20 and the outer edge of the second transition portion 20. The thickness of the second transition portion 20 decreases as the distance from the second support portion 21 increases. The first support portion 19, the first transition portion 18, the second support portion 21, and the second transition portion 20 are arranged in sequence in a ring shape.

[0047] The locking cylinder 22 is also provided with a locking hole 23 in the middle thereof, the bottom of which movably contacts the tops of the fixed half-cylinder 1 and the movable half-cylinder 2, and a guide portion 24 and a fitting portion 25 are vertically provided in the locking hole 23. The axis of the fitting portion 25 is colinear with the axis of the locking hole 23, and an arc-shaped transition is formed between the inner edge of one side of the guide portion 24 and the inner edge of one side of the fitting portion 25. The thickness of the guide portion 24 decreases as the distance from the fitting portion 25 increases. Two guide portions 24 and two fitting portions 25 are provided, and the locking cylinder 22 includes a first state and a second state.

[0048] When the locking cylinder 22 is in the first state, one pair of the guide portions 24 and the fitting portions 25 are opposite to the first transition portion 18, and the other pair of the guide portions 24 and the fitting portions 25 are opposite to the second transition portion 20, and the first transition portion 18, the first supporting portion 19, the second transition portion 20 and the second supporting portion 21 are all separated from the guide portions 24, the fitting portions 25 and the locking cylinder 22;

[0049] When the locking cylinder 22 is in the second state, the two fitting portions 25 fit against outer walls of the first supporting portion 19 and the second supporting portion 21 , respectively.

[0050] The tops of the first transition portion 18 , the first support portion 19 , the second transition portion 20 , and the second support portion 21 are all chamfered or rounded.

[0051] A first indicator ball 26 is provided on the outer wall of the locking cylinder 22 , and a second indicator ball 27 is provided on the outer wall of the movable half cylinder 2 . When the first indicator ball 26 is located above the second indicator ball 27 , the locking cylinder 22 is in the first state.

[0052] An indicator rod 28 is vertically provided at the bottom of the locking cylinder 22, and a termination portion 29 is provided on the side wall of the movable half cylinder 2. When the indicator rod 28 abuts against the side of the termination plate close to the connecting portion 12, the locking cylinder 22 is in a first state; when the indicator rod 28 abuts against the side of the connecting plate close to the termination plate, the locking cylinder 22 is in a second state.

[0053] The utility model provides a threading drum. When in use, the fixed half-drum 1 is fixed to the equipment frame (connected by the connecting portion 12); then when the core wire is passed through the threading hole, it is first necessary to put multiple rolls of aluminum foil on the aluminum foil disc, then open the fixing mechanism, and rotate the movable half-drum 2 outward so that the fixed half-drum 1 and the movable half-drum 2 are in a separated state; then the core wire is passed through the middle of the aluminum foil and the aluminum foil disc from bottom to top, and then directly pulled through the fixed half-drum 1 and the movable half-drum 2, and the core wire is fit into the first half groove 3; Then rotate the movable half-cylinder 2 so that the movable half-cylinder 2 fits on the fixed half-cylinder 1, and use a fixing mechanism to fix the movable half-cylinder 2 and the fixed half-cylinder 1. At this time, the core wire is located in the threading hole and can be pulled downstream. After the core wire is pulled, it is necessary to move the multiple disks of aluminum foil upwards, and put the aluminum foil to be used on the fixed half-cylinder 1 and the movable half-cylinder 2. The bottom aluminum foil is fixed to the aluminum foil disk, waiting to be used for winding the core wire. It should also be understood that the aluminum foil disk, aluminum foil and other structures are all existing technologies and need not be elaborated here.

[0054] At the same time, when pulling the core wire, the free end of the core wire can be passed through the two limiting wheels 6 from bottom to top, or after the core wire is pulled, it can be clamped between the two limiting wheels 6 from the side (the elastic frame 5 is elastic and can be bent outward to clamp the core wire between the limiting wheels 6; and one of the limiting grooves 7 can limit the core wire).

[0055] Since when passing the core wire through the threading hole, it is only necessary to open the movable half-cylinder 2, and after the core wire is inserted into the first half groove 3, the movable half-cylinder 2 is rotated to make it fixedly fit and connected with the fixed half-cylinder 1, the operation convenience and efficiency are improved.

[0056] During actual operation, in order to make the core wire fit stably in the first groove, the worker can also pull the core wire at the top and pull down the core wire under the fixed half cylinder 1, so that the core wire can be straightened and the core wire can fit stably in the first half groove 3.

[0057] There is an opening in the middle of the aluminum foil roll (the opening left on the outer wall of the winding shaft when winding). When the fixed half-cylinder 1 and the movable half-cylinder 2 are fixedly connected, the aluminum foil roll is raised from the bottom up, and the aluminum foil support plate 13 can pass through the opening in the middle of the aluminum foil roll. When the aluminum foil roll reaches above one of the aluminum foil support plates 13, a C-shaped support body 30 is taken and horizontally clipped onto the outer walls of the fixed half-cylinder 1 and the movable half-cylinder 2. At this time, the bottom of the support body 30 is supported by the aluminum foil support plate 13, and its top also supports the aluminum foil roll.

[0058] After the movable half-cylinder 2 and the fixed half-cylinder 1 are fitted together, the two fixing parts 9 are inserted from top to bottom into the holes on the first fixing seat 10 and the second fixing seat 11, thereby achieving a fixed connection between the fixed half-cylinder 1 and the movable half-cylinder 2; wherein the radius of the first fixing seat 10 and the second fixing seat 11 are respectively less than or equal to the radius of the fixed half-cylinder 1 and the movable half-cylinder 2, that is, the first fixing seat 10 and the second fixing seat 11 can both pass through the opening in the middle of the aluminum foil roll.

[0059] After the fixed half-cylinder 1 and the movable half-cylinder 2 are connected, the top of the core wire is passed through the locking hole 23, and the locking cylinder 22 is placed vertically above the fixed half-cylinder 1, with the first indicator ball 26 positioned above the second indicator ball 27. The locking cylinder 22 is then lowered until the bottom of the locking cylinder 22 contacts the top of the fixed half-cylinder 1 and the movable half-cylinder 2. At this point, the guide portion 24 and the contact portion 25 are aligned with the first transition portion 18 and the second transition portion 20, respectively, which have smaller thicknesses. The locking cylinder 22 is then rotated manually or with a tool such as a wrench, so that the two guide portions 24 contact the ends of the first support portion 19 and the second support portion 21, respectively. The locking cylinder 22 is then further rotated until the indicator rod 28 contacts the connecting portion 12, completing the further fixation of the fixed half-cylinder 1 and the movable half-cylinder 2.

[0060] At this point, the two fitting portions 25 are (slightly) interference-fitted against the outer walls of the first support portion 19 and the second support portion, respectively. This further improves the relative positional stability of the fixed half-cylinder 1 and the movable half-cylinder 2 through the locking cylinder 22. The tops of the first transition portion 18, the first support portion 19, the second transition portion 20, and the second support portion 21 are all rounded or chamfered, which facilitates the downward movement of the locking cylinder 22. At the same time, when rotating the locking cylinder 22, if the angle of the locking cylinder 22 is incorrect, the end portion 29 will limit the indicator rod 28, thereby preventing operational errors. The presence of the guide portion 24 allows the fitting portion 25 to transition more gently to the first support portion 19 and the second support portion 21, improving the convenience and smoothness of operation.

[0061] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A threading barrel, characterized in that: include: A fixed half-cylinder (1) and a movable half-cylinder (2), wherein a vertical edge on one side of the fixed half-cylinder (1) is hingedly connected to a vertical edge on one side of the movable half-cylinder (2), a first half-groove (3) is provided on the side of the fixed half-cylinder (1), and a second half-groove (4) is provided on the side of the movable half-cylinder (2); Elastic frames (5), two of which are provided at the bottom of the fixed half cylinder (1), each of which is provided with a limiting wheel (6) for rotation, and an outer wall of one of the limiting wheels (6) is provided with an annular limiting groove (7); A fixing mechanism is used to fix the positions of the fixed half-cylinder (1) and the movable half-cylinder (2); when the fixing mechanism fixes the fixed half-cylinder (1) and the movable half-cylinder (2), the first half-groove (3) and the second half-groove (4) form a cylindrical threading hole.

2. A threading barrel according to claim 1, characterized in that: The fixing mechanism comprises a horizontal U-shaped operating portion (8), the bottoms of both ends of the operating portion (8) are vertically provided with fixing portions (9), the bottom outer side of the fixed half cylinder (1) is provided with a first fixing seat (10), the bottom outer side of the movable half cylinder (2) is provided with a second fixing seat (11), and the tops of the first fixing seat (10) and the second fixing seat (11) are both provided with holes for inserting the fixing portion (9).

3. A threading barrel according to claim 2, characterized in that: A connecting portion (12) is vertically provided on a side of the fixed half-cylinder (1) facing away from the movable half-cylinder (2).

4. A threading barrel according to claim 3, characterized in that: A plurality of aluminum foil support plates (13) are horizontally arranged on one side of the fixed half cylinder (1) facing away from the movable half cylinder (2).

5. A threading barrel according to claim 3, characterized in that: A semi-arc-shaped first semi-cylinder (14) is vertically provided on the top of the fixed semi-cylinder (1), a third semi-groove (15) is provided on the side of the first semi-cylinder (14) and is matched with the first semi-groove (3), and the radius of the first semi-cylinder (14) is smaller than the radius of the top of the fixed semi-cylinder (1), and a semi-arc-shaped second semi-cylinder (16) is vertically provided on the top of the movable semi-cylinder (2), a fourth semi-groove (17) is provided on the side of the second semi-cylinder (16) and is matched with the second semi-groove (4), and the radius of the second semi-cylinder (16) is smaller than the radius of the top of the movable semi-cylinder (2); A first transition portion (18) and a first support portion (19) are vertically provided on the outer wall of the first semi-cylinder (14); the axis of the cross section of the first support portion (19) is collinear with the axis of the first semi-cylinder (14); an arc-shaped transition is formed between the outer edge of one side of the first transition portion (18) and the outer edge of the other side of the first transition portion (18); and the thickness of the first transition portion (18) decreases as the distance from the first support portion (19) increases; The outer wall of the second semi-cylinder (16) is vertically provided with a second transition portion (20) and a second support portion (21); the axis of the cross section of the second support portion (21) is collinear with the axis of the second semi-cylinder (16); an arc-shaped transition is formed between the outer edge of one side of the second transition portion (20) and the outer edge of one side of the second transition portion (20); the thickness of the second transition portion (20) decreases as the distance from the second support portion (21) increases; the first support portion (19), the first transition portion (18), the second support portion (21), and the second transition portion (20) are arranged in sequence in a ring shape; The locking cylinder (22) is provided with a locking hole (23) in the middle of the locking cylinder (22), and the bottom thereof is movably abutted against the top of the fixed half cylinder (1) and the movable half cylinder (2). A guide portion (24) and a fitting portion (25) are vertically arranged in the locking hole (23). The axis of the fitting portion (25) is colinear with the axis of the locking hole (23). An arc-shaped transition is formed between an inner edge of one side of the guiding portion (24) and an inner edge of one side of the fitting portion (25). The thickness of the guiding portion (24) decreases as the distance from the fitting portion (25) increases. Two guiding portions (24) and two fitting portions (25) are provided. The locking cylinder (22) includes a first state and a second state. When the locking cylinder (22) is in the first state, one pair of the guide portions (24) and the fitting portion (25) are opposite to the first transition portion (18), and another pair of the guide portions (24) and the fitting portion (25) are opposite to the second transition portion (20), and the first transition portion (18), the first supporting portion (19), the second transition portion (20) and the second supporting portion (21) are all in a separated state from the guide portion (24), the fitting portion (25) and the locking cylinder (22); When the locking cylinder (22) is in the second state, the two fitting portions (25) fit respectively on the outer walls of the first supporting portion (19) and the second supporting portion (21).

6. A threading barrel according to claim 5, characterized in that: The tops of the first transition portion (18), the first support portion (19), the second transition portion (20), and the second support portion (21) are all chamfered or rounded.

7. A threading barrel according to claim 5, characterized in that: The outer wall of the locking cylinder (22) is provided with a first indicator ball (26), and the outer wall of the movable half cylinder (2) is provided with a second indicator ball (27). When the first indicator ball (26) is located above the second indicator ball (27), the locking cylinder (22) is in a first state.

8. A threading barrel according to claim 5, characterized in that: An indicator rod (28) is vertically provided at the bottom of the locking cylinder (22), and a termination portion (29) is provided on the side wall of the movable half cylinder (2). When the indicator rod (28) abuts against a side of the termination plate close to the connecting portion (12), the locking cylinder (22) is in a first state; when the indicator rod (28) abuts against a side of the connecting plate close to the termination plate, the locking cylinder (22) is in a second state.