CN210066106U

CN210066106U - A mould cooperation structure for tube-shape knitting

Info

Publication number: CN210066106U
Application number: CN201920454405.0U
Authority: CN
Inventors: 刘景涛; 孙钦梅
Original assignee: Shandong Greentown Home Furnishing Co Ltd
Current assignee: Shandong Greentown Home Furnishing Co Ltd
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-02-14
Anticipated expiration: 2029-04-04

Abstract

The application discloses a mould cooperation structure for tube-shape knitting belongs to and weaves mechanical field for the knitting is woven, and it includes the base, the central axis position department of base installs middle support piece, and the outer mould of fixed lower part is installed with it at middle support piece's top, and the outer mould of lower part cooperates with middle inner mould, middle inner mould is connected with the promotion hydro-cylinder, and the promotion hydro-cylinder is installed in the central axis department of lid, and the lid passes through the lid bracing piece and connects in the support ring body, and the lower terminal surface of support ring body is provided with and indicates fixed connection and the perpendicular lower part bracing piece that sets up, and the other end perpendicular to base of lower part bracing piece is connected. In view of above-mentioned technical scheme, this application can realize that plane fabric weaves to three-dimensional fabric, and can improve the effect that three-dimensional direction was woven, improves the quality of knitting.

Description

A mould cooperation structure for tube-shape knitting

Technical Field

The application belongs to the field of knitting machinery, and particularly relates to a mold matching structure for a tubular knitted fabric.

Background

The conventional knitting machine can only perform warp and weft knitting in a plane direction, and after knitting the knitting machine into a flat fabric, the flat fabric is processed to obtain a three-dimensional knitted fabric, such as a frame, a bag body and the like formed by the knitted fabric. However, in the above-described production method, there are sewn portions sewn together with connecting lines when the cylindrical frame or bag is produced. If the sewing part is processed incompletely, not only the appearance is affected, but also phenomena such as cracking and the like are easy to occur.

If the planar fabric is required to be processed into the three-dimensional fabric, a mold matched with the weaving structure is required, and the structure of the mold directly influences the weaving effect.

Disclosure of Invention

An object of this application is to provide a mould cooperation structure for tube-shape knitting, it can realize that plane fabric weaves to three-dimensional fabric, and can improve the effect that three-dimensional direction was woven, improves the quality of knitting.

In order to achieve the purpose, the method is realized by the following technical scheme:

a mould cooperation structure for tube-shape knitting, the on-line screen storage device comprises a base, the central axis position department of base installs middle support piece, and the outer mould of fixed lower part is installed with it at middle support piece's top, the outer mould of lower part and the cooperation of middle inner mould, middle inner mould is connected with the promotion hydro-cylinder, and the promotion hydro-cylinder is installed in the central axis department of lid, and the lid passes through the lid bracing piece and connects in the support ring body, the lower terminal surface of support ring body be provided with indicate fixed connection and perpendicular lower part bracing piece that sets up, the other end perpendicular to base of lower part bracing piece is connected.

Further, the outer mould of lower part in this application include the mould body, the mould body is the frustum column structure that the center department opened there is the mould through-hole, and it has the mould elasticity portion that a plurality of closed to mould body central axis department to distribute at the upper surface of mould body.

Further, the mould elastic part in this application be circular-arc plate body structure, its bottom is connected through the breach of connecting axle with mould body upper surface border department processing to the junction of connecting axle and mould body is provided with the coil spring, and the mould elastic part rotates for the mould body round the hookup location that is provided with connecting axle and coil spring.

Further, the bottom of middle support piece in this application is connected with bottom support piece, installs the welt between bottom support piece and the base.

Further, the central axis department of the outer mould of lower part, middle inner mould in this application be provided with the wire winding guide arm, the bottom of wire winding guide arm is fixed on the outer mould of lower part, and the mould reciprocates along the direction of wire winding guide arm in the middle of.

Compared with the prior art, the beneficial effects of this application are:

this application can be through the mould structure of mutually supporting for the knitting of plane direction continues to weave in the vertical direction, and can guarantee the laminating compactness of knitting and mould in the vertical direction, and then improves the effect and the quality of weaving.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 shows a warp feeding device in the present application.

Fig. 3 is a schematic diagram of the mating of the molds of the present application.

Fig. 4 is a schematic view of the structure of the outer mold in the present application.

Fig. 5 is a schematic view of the structure of the track in the present application.

FIG. 6 is a schematic view of the shuttle construction of the present application.

FIG. 7 is a first schematic view of the bobbin case and the spool in the present application.

FIG. 8 is a second schematic view of the bobbin case and the spool in this application.

Fig. 9 is a first schematic structural diagram of a contact wheel in the present application.

Fig. 10 is a schematic structural diagram of a contact wheel in the present application.

In the figure: 1. lifting the oil cylinder; 2. lifting the oil cylinder fixing frame; 3. a cover body; 4. an upper outer mold; 5. an intermediate inner mold; 6. a cover body support bar; 7. a support ring body; 8. a rod body fixing ring; 9. a lower support bar; 10. a guide bar; 11. a base; 12. an outer stationary ring body; 13. an inner jacking oil cylinder; 14. an external jacking oil cylinder; 15. an outgoing line pole; 16. a lower outer mold; 17. a track; 18. a connecting member; 19. an outgoing line hole; 20. an inner wire feeding rod; 21. an inner wire feeding hole; 22. a mold body; 23. a mold elastic portion; 24. a through hole of the mold; 25. the side of the track side is opened; 26. a track power transmission unit; 27. an inner fixed ring body; 28. an intermediate support; 29. a bottom support; 30. a liner plate; 31. winding the guide rod; 32. a wire feeding rod limiting ring; 33. a shuttle upper cover body; 34. a wire releasing port; 35. a shuttle cartridge body; 36. a contact wheel; 37. a pay-off shaft; 38. a spool limiting plate; 39. an elastic plate body.

Detailed Description

The technical solutions described in the present application are further described below with reference to examples. It should be noted that the following paragraphs may refer to terms of orientation including, but not limited to, "upper, lower, left, right, front, rear", etc., which are based on the orientation shown in the drawings corresponding to the specification, and should not be construed as limiting the scope or technical solutions of the present application, but merely as facilitating better understanding of the technical solutions described in the present application by those skilled in the art.

Example 1: the utility model provides a mould cooperation structure for tube-shape knitting, includes base 11, the central axis position department of base 11 installs middle support piece 28, and fixed lower part outer mould 16 is installed with it at middle support piece 28's top, and lower part outer mould 16 cooperates with middle inner mould 5, middle inner mould 5 is connected with lifting cylinder 1, and lifting cylinder 1 installs in the central axis department of lid 3, and lid 3 passes through lid bracing piece 6 and connects in supporting ring body 7, and the lower terminal surface of supporting ring body 7 is provided with and indicates fixed connection and perpendicular lower part bracing piece 9 that sets up, and the other end perpendicular to base 11 of lower part bracing piece 9 is connected.

Example 2: a mould cooperation structure for a cylindrical braided fabric is characterized in that the lower outer mould comprises a mould body 22, the mould body 22 is a frustum-shaped structure with a mould through hole 24 in the center, and a plurality of mould elastic parts 23 which are close to the central axis of the mould body 22 are distributed on the upper surface of the mould body 22. The die elastic part 23 is of an arc-shaped plate structure, the bottom of the die elastic part is connected with a notch processed at the edge of the upper surface of the die body 22 through a connecting shaft, a coil spring is arranged at the joint of the connecting shaft and the die body 22, and the die elastic part rotates relative to the die body 22 around the connecting position where the connecting shaft and the coil spring are arranged. The bottom of the middle support 28 is connected with a bottom support 29, and a lining plate 30 is installed between the bottom support 29 and the base 11. And the central axes of the lower outer die 16 and the middle inner die 5 are provided with a winding guide rod 31, the bottom of the winding guide rod 31 is fixed on the lower outer die 16, and the middle inner die 5 moves up and down along the direction of the winding guide rod 31. The structures and the connection relations of the rest parts are the same as those in the previous embodiment.

On the basis of the above-mentioned embodiments, the present application continues to describe the technical features and functions of the technical features mentioned therein in detail to help those skilled in the art to fully understand the technical solutions of the present application and reproduce the same. Since the structure described in the present application needs to be matched with other knitting structures to complete knitting of the three-dimensional knitted fabric, the present application describes the action process of the mold by adopting a manner of describing the overall structure.

In the present application, the warp threads are fed in the structure shown in fig. 2, and specifically, the warp threads are gathered at the center point of the whole knitting machine and connected after passing through the outer thread feeding hole 19 and the inner thread feeding hole 21 of the outer thread feeding rod 15 and the inner thread feeding rod 20, respectively. As shown in Figs. 1 and 2, the inner thread feeding hole 21 and the outer thread feeding hole 19 are not coaxially arranged, but the positions of the warp threads fed between the inner thread feeding hole 21 and the outer thread feeding hole 19 are slightly staggered to avoid unnecessary movement interference during the up-and-down staggered movement of the two.

The initial position of the point where the warp threads fed through the outer thread feeding hole 19 and the inner thread feeding hole 21 described in the above paragraph converge should be located at the plane position where the rail 17 is located. When different warp threads move up and down alternately along with the external thread feeding rod 15 and the internal thread feeding rod 20, the lowest point of the warp threads should move at a position where the warp threads are lapped in the track side opening 25 of the track 17. The purpose of the design is to prevent the warp from interfering with the shuttle device in the process of moving up and down and affecting the stability of the motion of the warp and the shuttle device.

In the above paragraphs, the up-and-down movement of the wire feeding rod 15 and the wire feeding rod 20 is achieved by the outer lift cylinder 14, the inner lift cylinder 13 and the respective guide rods 10 at the bottom. The movable ends of the inner jacking oil cylinder 13 and the outer jacking oil cylinder 14 are realized by matching with an inner fixed ring (a plate body which is connected with an inner wire feeding rod 20 and the inner area of an outer ring body 12 in figures 1 and 2) and an outer fixed ring 12. The inner fixing ring and the outer fixing ring 12 are used for fixing the bottom end surfaces of the wire feeding rods 20 which are respectively installed, and can be connected with a jacking mechanism (an inner jacking oil cylinder 13 and an outer jacking oil cylinder 14 which are described in the application) so as to realize the up-and-down movement of the wire feeding rods in respective areas.

Due to different models of machines, in the process of up-and-down movement of the external wire feeding rod 15 and the internal wire feeding rod 20, a certain degree of deviation may occur in the length direction, at this time, an external wire feeding rod limiting ring 32 and an internal wire feeding rod limiting ring (not shown in the figure, the positions of the external wire feeding rod limiting ring and the internal wire feeding rod limiting ring should be in the internal area of the external wire feeding rod limiting ring 32, and are also positioned below the internal wire feeding hole 19 and below the track 17.) are added in the up-and-down movement path of the external wire feeding rod 15 and the internal wire feeding rod limiting ring, through holes in the same distribution state as the wire feeding rods are distributed on the internal wire feeding rod limiting ring and the external wire feeding rod limiting ring 32, and the wire feeding rods can pass through the through holes and are guided in the vertical direction of the rod body through the through holes, so as to ensure the stability.

In the present application, the weft thread feeding device comprises a track 17 and a weaving device moving on the track 17. As shown in fig. 5 and fig. 6 to 9, the whole track 17 is a circular track, a downward annular groove structure is processed on the upper portion of the circular track, and two track power transmission portions 26 coaxial with the circular track are distributed on the bottom surface of the groove structure. A plurality of track side openings 25 are provided on both sides of the annular groove structure. The track side openings 25 may be circular or rectangular, but the line connecting the center points of the track side openings 25 on both sides of the groove structure should point to the central axis of the track 17 to ensure that the meridian lines described in the above paragraph can fall into the track side openings 25.

In the above paragraphs, the bottom of the groove structure in the track 17 is provided with the track power transmission part 26, and the top of the track power transmission part 26 should not be higher than the bottom of the groove structure, so as to increase the safety of the track 17. The track 17 is fixed on the wire feeding rod spacing ring 32 through a connecting piece. The connection for the fixed track 17 and the feed rod stop collar 32 should be located between the feed rod 20 and the feed rod 15 and should not affect the movement of both.

Cooperating with the track 17 is a shuttle device, as shown in fig. 6-9. The shuttle device in this application includes the shell body that lid 33 and shuttle box 35 constitute on the shuttle, can separate and fix between shuttle upper cover 33 and the shuttle box 35 to internally mounted at shuttle box 35 has the paying off shaft 37 of installation and fixed weft, is provided with the spool limiting plate 38 of discoid structure at the both ends of paying off shaft 37, and the effect of spool limiting plate 38 lies in the weft spool of fixing on it. A thread take-off port 34 is opened on the other side of the shuttle box body 35 with respect to the mounting thread take-off shaft 37. In use, the direction of the payoff opening 34 should be directed towards the central axis of the track 17 so that the weft thread can be fed with the warp threads staggered with respect to each other.

A contact wheel 36 is mounted on the bottom of the shuttle box body 35, that is, the lower surface of the shuttle box body 35. The contact wheel 36 is a wheel body with a driving motor, and comprises a groove 40 contacted with the track power transmission part 26, a contact hole 41 filled with a conductive material is processed on the inner bottom surface of the groove 40, the conductive material in the contact hole 41 is directly connected with a lead block 42 in the shaft body of the contact wheel 36, a connecting wire hole 43 is arranged in the lead block 42, and the connecting wire hole 43 is used for transmitting the electric power transmitted by the track power transmission part 26 to the motor. In the present application, in order to better achieve a stable movement of the weaving device, it adopts a forward-driving movement mode, i.e. the lower surface of the shuttle box 35 is provided with four contact wheels 36, but only the two contact wheels 36 at the rear position serve for power supply, while the contact wheel 36 at the front serving for traction does not serve for conduction as mentioned in the above paragraph.

Further, in the weaving device described in the above paragraph, the thread feeding of the weft thread is realized by placing the thread feeding shaft 37 with the thread shaft stopper plate 38 inside the shuttle box body 35. However, in the actual use, since both ends of the unwinding shaft 37 are fixed to the side walls of the shuttle box body 35 by the bearing structure, this means that it is inevitable that the tightness of the weft thread fed thereto cannot be secured if a certain damping is not provided to the unwinding shaft 37. In order to solve the above technical problem, an elastic plate body 39 is provided in the present application, and the elastic limiting plate 39 is a circular arc structure, which can be tangent to the circular bobbin limiting plate 38. The elastic plate body 39 is mounted to one side of the bobbin stopper plate 38 by means of a rivet or screw structure, and its free end is overlapped on the outer surface of the bobbin stopper plate 38. By adopting the structure, a certain damping effect can be provided for the paying-off shaft 37 on the premise of not influencing the normal rotation of the paying-off shaft 37, so that the proper tightness degree of the weft is ensured in the process of moving along the track 17, and the weaving quality of the weft is further improved.

As shown in fig. 3 and 4, a lower outer mold 16 is also installed at the central axis where the rail 17 is located. The central axis of the lower outer mould tool 16 coincides with the central axis of the rail 17. An intermediate inner mold 5 is provided above the lower outer mold 16, and the central axis of the intermediate inner mold 5 coincides with the central axis of the lower outer mold 16. The middle inner die 5 is connected with the movable end of the lifting oil cylinder 1 through a connecting rod, and the lifting oil cylinder 1 is fixed on the cover body 3 through a lifting oil cylinder fixing frame 2.

The lower outer mold 6 described in the above paragraph includes a mold body 22 and a mold elastic part 23, the mold elastic part 23 is distributed around the mold body 22, and the mold elastic part 23 is made of an elastic metal material, and a free end thereof away from the mold body 22 is closed toward a central axis of the mold elastic part 23. The die elastic part 23 in the lower outer die 16 needs to be expanded outward along the outer surface of the middle inner die 5 during the relative movement between the middle inner die 5 and the lower outer die 16. This enables a pressing operation between the middle inner mold 5 and the lower outer mold 16, thereby providing an external force for the subsequent three-dimensional knitting, and preventing the fabric from being loosened during the three-dimensional knitting.

In particular, in the present application, the lower outer mold 16 is made and fixed by means of an intermediate support 28 of hollow tubular configuration, as shown in figure 3. Further, a bottom support 29 and a liner plate 30 may be installed below the intermediate support 28 to facilitate adjustment of the height of the lower outer mold 16 and the height of the intermediate inner mold 5 relative to the rails 17.

As shown in fig. 4, in the present application, a through hole is formed at the central axis of the lower outer mold 16, that is, a mold through hole 24 described in the present application. The through-die hole 24 is located at the central axis of the die body 22. The inside of the through-mold hole 24 allows the winding guide 31 shown in fig. 3 to pass through, the winding guide 31 is an elongated rod body fixed and connected to the movable end of the lift cylinder 1 described in the above paragraph, and the winding guide 31 is not a complete rod body passing through the intermediate inner mold 5, and is actually a structure fixed to the upper and lower ends of the intermediate inner mold 5 and detachably connected to the intermediate inner mold 5.

As shown in fig. 3, there is further provided in the present application a case where the outer mold is mounted in the central axis direction both above and below the intermediate inner mold 5. The lower outer mould tool 16 is in this application mounted below the middle inner mould tool 5, while the upper outer mould tool 4 is mounted above the middle inner mould tool 5, the centre axes of all three tools coinciding. And the upper outer mould tool 4 is of the same structural configuration as the lower outer mould tool 16, which results in the intermediate inner mould tool 5 also being of symmetrical body construction.

In the above description of the structural features that constitute the present application, the present application continues with the following description of the working processes involved therein.

The warp threads described in this application pass through the inner thread feeding hole 21 and the outer thread feeding hole 19 and then are overlapped and knotted at the central axis of the rail 17. The central axis of the rail 17 is also the central axis of the middle inner mold 5, the upper outer mold 4 and the lower outer mold 16. In the initial state, the inner wire feeding rod 20 and the outer wire feeding rod 15 are vertically staggered, that is, the inner wire feeding hole 21 of the inner wire feeding rod 20 is located above the outer wire feeding hole 19 of the outer wire feeding rod 15, and the outer wire feeding hole 19 of the outer wire feeding rod 15 is located on the track 17 on the side of the track side opening 25 with its center point parallel to the bottom surface of the track side opening 25.

After the warp thread loading process is completed, the weft threads are installed on the pay-off shaft 37 in the shuttle weaving device, and the pay-off shaft 37 is inside the shuttle box body 35 and can move together with the shuttle box body 35. The shuttle box 35 described in this application is moved by a bottom contact wheel 36. The rear contact wheel 36 is electrically connected to the rail power transmission unit 26 in the rail 17 and is input to the drive motor of the front contact wheel 36, and the front contact wheel 36 is driven by the drive motor.

The contact wheel 36 of the shuttle moves against the warp threads overlapping the track side opening 25 during one revolution of the shuttle around the track 17 and the top of the shuttle is spaced from the top warp threads so that the shuttle is not disturbed by warp threads or both. The shuttle device moves along the track 17 once and then returns to the starting position of the track 17. The shuttle mentioned in this paragraph stops moving after one revolution along the track 17 and may be implemented using a limit sensor configuration. Specifically, when a hard limit mode is adopted to stop the shuttle device after the shuttle device runs for one circle along the track 17, a photoelectric sensor or a proximity sensor needs to be installed at a stop position, taking the photoelectric sensor as an example, when the shuttle device moves to the position along the track 17, an optical path between the photoelectric sensors arranged in pairs is cut off, the photoelectric sensors cannot receive optical signals from the paired sensors, so that a signal for cutting off the power supply of the track is sent to the control device, and after the track 17 is powered off, the shuttle device is short of the power supply and stops moving. The time point after the power failure of the rail 17 and the time point after the alternate movement of the inner wire feeding rod 20 and the outer wire feeding rod 15 are completed form a time difference, and once the time difference passes, the controller resumes the power supply to the rail 17. The shuttle device continues to move along the track 17 after receiving power transmitted from the track 17. The above process is repeated. The process after the alternate movement of the in-track wire feeding rod 20 and the out-track wire feeding rod 15 mentioned in the following paragraphs is the same as the process described in the paragraph, and the following paragraphs are not repeated.

At this time, the inner wire feeding rod 20 and the outer wire feeding rod 15 are operated again, that is, the inner wire feeding hole 21 of the inner wire feeding rod 20 is parallel to the bottom surface of the rail side opening 25 at the center point of the inner wire feeding hole 21 from the position originally above the rail 17, and the outer wire feeding hole 19 of the outer wire feeding rod 15 is raised above the rail 17 from the original center point parallel to the bottom surface of the rail side opening 25.

After the completion of the movement of the inner thread feeding rod 20 and the outer thread feeding rod 15, the shuttle device continues to move along the track 17 for one turn, and after one turn, returns to the initial position of the track 17.

The operation of the inner thread feeding rod 20, the outer thread feeding rod 15 and the weaving device is alternately performed to complete the weaving of the flat woven fabric.

After the knitting area of the flat knitted fabric reaches the projection area of the middle inner mold 5 on the horizontal plane, the middle inner mold 5 moves downwards under the driving of the lifting oil cylinder 1. The middle inner mold 5 is slowly moved downward while pressing the horizontal braid until the middle inner mold 5 comes into contact with the inner surfaces of the plurality of mold elastic parts 23 of the lower outer mold 16. After the two contact, the middle inner mold 5 continues to move downwards slowly.

In the downward movement of the middle inner mold 5, since the contact position of the middle inner mold 5 with the horizontal braid and the contact position of the middle inner mold 5 with the lower outer mold 16 are the same and are on the horizontal plane of the rail 17, the braiding state of the horizontal braid is not affected.

After the middle inner die is woven on the woven fabric, an operator folds the warps and the wefts in the direction of the central axis of the die, and cuts the warps and the wefts connected with the middle inner die in a sleeved mode after the warps and the wefts are folded. And controlling the lifting oil cylinder 1 at the top to lift upwards, so that the middle inner die 5 is separated from the lower outer die 16, and taking down the braided fabric covered outside the middle inner die 5.

When the upper outer mold 4 and the lower outer mold 16 which are arranged up and down are adopted in the application, the working process is as follows:

on the basis of the above working process, the difference is that when the operator gathers the warp and weft in the direction of the central axis of the mold, the gathered part is gathered on the winding guide rod 31 above the middle inner mold 5. As can be seen from the foregoing paragraphs of the present specification, the intermediate inner mold 5 is an elongated rod installed at the upper and lower portions of the intermediate inner mold 5, and is used to fix the initial collection points of the warp and weft and to help the warp and weft to cover and connect with the surface of the intermediate inner mold 5 during actual use. When the operator gathers the warp and weft threads on the winding guide rod 31 above the middle inner die 5, the warp and weft threads are restored to the initial state before the warp and weft threads are woven, the weft threads start to move around the track 17 under the driving of the shuttle weaving device, the warp threads start to move up and down under the driving of the inner thread feeding rod 20 and the outer thread feeding rod 15, and the weaving operation of the plane woven fabric is started at the horizontal position of the track 17. When the area of the flat woven fabric reaches the projection of the middle inner mold 5 on the plane, the middle inner mold 5 starts to move upwards under the driving of the lifting cylinder 1, so as to contact with the inner surface of the mold elastic part 23 in the upper outer mold 4, and the three-dimensional weaving process is repeated.

When the woven fabric covers the surface of the middle inner mold 5 and meets the weaving requirement, an operator gathers warp and weft at the winding guide rod 31 below the middle inner mold 5. After the collection is completed, the lifting oil cylinder 1 descends, the middle inner die 5 moves out from the upper outer die 4 above, and the winding guide rod 31 is separated, so that the braided fabric can be separated from the upper part of the middle inner die 5.

And repeating the weaving steps to finish the next weaving operation of the cylindrical three-dimensional woven fabric.

Claims

1. A mould cooperation structure for tube-shape knitting, includes base (11), its characterized in that: the central axis position department of base (11) installs middle support piece (28), and mould (16) outside the fixed lower part is installed at the top of middle support piece (28), and mould (16) and middle interior mould (5) cooperation outside the lower part, mould (5) are connected with promotion hydro-cylinder (1) in the middle of, and the central axis department in lid (3) is installed in promotion hydro-cylinder (1), and lid (3) are connected in support ring body (7) through lid bracing piece (6), and the lower terminal surface of support ring body (7) is provided with and indicates fixed connection and perpendicular lower part bracing piece (9) that sets up, and the other end perpendicular to base (11) of lower part bracing piece (9) are connected.

2. The die fitting structure for a cylindrical braid according to claim 1, wherein: the lower outer die (16) comprises a die body (22), the die body (22) is of a frustum-shaped structure with a die through hole (24) in the center, and a plurality of die elastic parts (23) which are close to the central axis of the die body (22) are distributed on the upper surface of the die body (22).

3. The die fitting structure for a cylindrical braid according to claim 2, wherein: the die elastic part (23) is of an arc-shaped plate body structure, the bottom of the die elastic part is connected with a notch processed at the edge of the upper surface of the die body (22) through a connecting shaft, a coil spring is arranged at the connecting position of the connecting shaft and the die body (22), and the die elastic part (23) rotates relative to the die body (22) around the connecting position provided with the connecting shaft and the coil spring.

4. The die fitting structure for a cylindrical braid according to claim 1, wherein: the bottom of the middle supporting piece (28) is connected with a bottom supporting piece (29), and a lining plate (30) is arranged between the bottom supporting piece (29) and the base (11).

5. The die fitting structure for a cylindrical braid as claimed in any one of claims 1 to 4, wherein: and the central axes of the lower outer die (16) and the middle inner die (5) are provided with a winding guide rod (31), the bottom of the winding guide rod (31) is fixed on the lower outer die (16), and the middle inner die (5) moves up and down along the direction of the winding guide rod (31).