阅读说明：本技术 一种穿线孔可调式针织袜机 (Hosiery machine with adjustable through wires hole ) 是由 徐浩楠 于 2021-08-23 设计创作，主要内容包括：本发明公开了一种穿线孔可调式针织袜机,涉及针织袜机领域,包括织袜机缝纫空间,所述织袜机缝纫空间中转动设有动力轴,所述动力轴中侧设有纱线轮,所述纱线轮上设有纱线,本发明通过连接杆、固定杆以及成型板形成一个穿线孔,该穿线孔的直径是可以变化的,且穿线孔的侧面在变化的过程中始终连接,可以调节孔径,以通过不同直径的编织线,提高编织的稳定性同时减小磨损,防止断线,通过接触层和减摩层可以减少穿过穿线孔的编织线的摩擦力,接触层和减摩层的表面加工光滑,可以有效减少摩擦损失。(The invention discloses a threading hole adjustable hosiery machine, which relates to the field of hosiery machines and comprises a hosiery machine sewing space, wherein a power shaft is rotatably arranged in the hosiery machine sewing space, a yarn wheel is arranged on the middle side of the power shaft, and yarns are arranged on the yarn wheel.)

1. The utility model provides a knitting hosiery machine with adjustable through wires hole, includes hosiery machine sewing space (11), its characterized in that: the hosiery machine is characterized in that a power shaft (12) is arranged in a sewing space (11) of the hosiery machine in a rotating manner, a yarn wheel (13) is arranged on the middle side of the power shaft (12), yarns (14) are arranged on the yarn wheel (13), a yarn hanging wheel (15) is fixedly arranged on the rear side of the power shaft (12), the yarn hanging wheel (15) rotates along with the power shaft (12), a thread passing plate (16) is arranged on the right side of the sewing space (11) of the hosiery machine, a needle head through hole is formed in the left side of the thread passing plate (16), woven fabrics (17) are arranged on the thread passing plate (16), a needle (18) is arranged on the upper side of the sewing space (11) of the hosiery machine, the upper side of the needle (18) is connected with a transmission mechanism, sewing threads (19) are penetrated in the needle (18), the sewing threads (19) act on the yarns (14) and can be sewn on the woven fabrics (17), and a central space (20) is arranged on the middle side of the needle (18), the center space (20) is a circle center space, eight sliding grooves (21) are uniformly formed in the rear side of the center space (20) around the circle center, a middle-arranged space (25) is arranged on the front side of each sliding groove (21), a sliding mechanism is arranged in each sliding groove (21), an adjusting mechanism is arranged in each middle-arranged space (25), an annular space (26) is arranged on the front side of each middle-arranged space (25), each annular space (26) is annular, a control mechanism is arranged in each annular space (26), the annular spaces (26) and the middle-arranged spaces (25) are all communicated, and a diameter changing mechanism is arranged in the center space (20).

2. Knitting hosiery machine with adjustable threading holes according to claim 1, characterized in that: the sliding mechanism is arranged in the sliding groove (21) and comprises a sliding rod (22) fixedly installed between the side walls of the sliding groove (21), the surface of the sliding rod (22) is processed to be smooth, a sliding block (23) is arranged on the sliding rod (22) in a sliding mode, a spring (24) is fixedly arranged between the sliding block (23) and the side wall of the sliding groove (21), a connecting rod (35) is fixedly arranged on the front side of the sliding block (23), and the connecting rod (35) extends forwards to penetrate through the front side wall of the sliding groove (21) to enter the middle-arranged space (25).

3. Knitting hosiery machine with adjustable threading holes according to claim 1, characterized in that: the adjusting mechanism comprises connecting rods (35) which are slidably mounted on the front side wall of the middle space (25), each connecting rod (35) is fixedly provided with a fixing rod piece (36), and each fixing rod piece (36) is fixedly provided with a forming plate (37).

4. Knitting hosiery machine with adjustable threading holes according to claim 1, characterized in that: the middle side of each connecting rod (35) is provided with a guide groove, an elastic ring (32) is arranged between the guide grooves of each connecting rod (35), connecting pieces (31) are arranged at eight positions of the elastic rings (32) corresponding to the guide grooves, and the middle side of each connecting piece (31) is hollow.

5. Knitting hosiery machine with adjustable threading holes according to claim 1, characterized in that: the fixed rod piece (36) fixedly arranged on each connecting rod (35) points to the position of the circle center.

6. Knitting hosiery machine with adjustable threading holes according to claim 1, characterized in that: the left side and the right side of each forming plate (37) are in a shape of a quarter of a circular arc, an adjustable threading hole is formed among the eight forming plates (37), and the length of each forming plate (37) is zero point five centimeters.

7. Knitting hosiery machine with adjustable threading holes according to claim 1, characterized in that: a control mechanism is arranged in the annular space (26), the control mechanism comprises a gear ring (34) which is rotatably arranged between the side walls of the annular space (26), an inner gear ring is arranged on the inner side of the gear ring (34), twenty-four long rods (27) are rotatably arranged on the front side wall of the annular space (26), each long rod (27) extends backwards to penetrate through the rear side wall of the annular space (26) to enter the middle-placed space (25), the long rod (27) is fixedly provided with a pinion (28) and an adjusting block (29) in sequence from front to back, each pinion (28) is meshed with the inner gear ring of the gear ring (34), a fixing rod (30) is arranged at the rear side of the adjusting block (29), the fixing rod (30) penetrates through the hollow position in the middle of the connecting piece (31), thereby mounting the connector (31) on the fixing rod (30).

8. Knitting hosiery machine with adjustable threading holes according to claim 1, characterized in that: the upper side of the annular space (26) at the uppermost side is rotatably provided with a manual rotating worm (33), the manual rotating worm (33) extends upwards to the outer space, and the manual rotating worm (33) is meshed with the outer ring of the gear ring (34).

9. Knitting hosiery machine with adjustable threading holes according to claim 1, characterized in that: be equipped with reducing mechanism in forming plate (37), each be equipped with arc spout (38) in forming plate (37), the fixed arc guide arm (41) that is equipped with between arc spout (38) lateral wall, arc guide arm (41) are curved, it is equipped with first articulated slider (42) to slide on arc guide arm (41), each the one end of forming plate (37) is equipped with connecting space (43), fixed guide bar (44) that is equipped with in connecting space (43), it is equipped with second articulated slider (45) to slide on guide bar (44), first articulated slider (42) and adjacent it articulates to have articulated board (39) between second articulated slider (45), the inboard fixed contact layer (40) that is equipped with of articulated board (39), the surface of contact layer (40) carries out, and the surface friction coefficient is little, each be equipped with antifriction layer (46) on forming plate (37), the friction-reducing layer (46) forms with the contact layer (40) an adjustable friction ring with a low coefficient of friction, through which the sewing thread (19) passes.

Technical Field

The invention relates to the field of hosiery machines, in particular to a hosiery machine with an adjustable threading hole.

Background

The hosiery machines can be classified according to the needle bed form, the knitting needle type and the number of needle cylinders (beds), the structure of the hosiery machine mainly comprises a yarn feeding mechanism, a knitting mechanism, a needle selecting mechanism, a control mechanism, a transmission mechanism, a density adjusting mechanism and a drawing mechanism, some hosiery machines are also provided with a starting mechanism and a folding mechanism, the flat hosiery machine is also provided with a loop transfer mechanism, and the hosiery machines are classified according to the needle cylinders and can be divided into a single needle cylinder hosiery machine and a double needle cylinder hosiery machine.

In traditional hosiery machine's needle mechanism, but the aperture of needle is fixed, can not adjust, along with the change of knitting socks material, can use the braided wire of different diameters, in case the diameter of line is great, can be very big at knitting sewing process kind of resistance, influences the stability of being qualified for the next round of competitions, and the friction is great, causes the wearing and tearing of line very easily.

Disclosure of Invention

The invention aims to provide a threading hole adjustable hosiery machine to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a hosiery machine with adjustable through wire holes comprises a hosiery machine sewing space, wherein a power shaft is rotatably arranged in the hosiery machine sewing space, a yarn wheel is arranged on the middle side of the power shaft, yarns are arranged on the yarn wheel, a yarn hanging wheel is fixedly arranged on the rear side of the power shaft and rotates along with the power shaft, a thread passing plate is arranged on the right side of the hosiery machine sewing space, a needle head through hole is formed in the left side of the thread passing plate, a fabric is arranged on the thread passing plate, a needle is arranged on the upper side of the hosiery machine sewing space and connected with a transmission mechanism, a sewing thread penetrates through the needle, the sewing thread acts on the yarns to sew the fabric, a central space is arranged on the middle side of the needle, the central space is a circle center space, eight sliding chutes are uniformly arranged on the rear side of the central space around the circle center, and a space is arranged in the front side of each sliding chute, the sliding groove is internally provided with a sliding mechanism, the middle space is internally provided with an adjusting mechanism, the front side of the middle space is provided with an annular space, the annular space is annular, the annular space is internally provided with a control mechanism, the annular space is communicated with each middle space, and the central space is internally provided with a reducing mechanism.

Preferably, a sliding mechanism is arranged in the sliding chute, the sliding mechanism comprises a sliding rod fixedly installed between the side walls of the sliding chute, the surface of the sliding rod is smooth, a sliding block is arranged on the sliding rod in a sliding mode, a spring is fixedly arranged between the sliding block and the side wall of the sliding chute, a connecting rod is fixedly arranged on the front side of the sliding block, and the connecting rod extends forwards to penetrate through the front side wall of the sliding chute to enter the middle-placed space.

Preferably, the adjusting mechanism comprises connecting rods slidably mounted on the front side wall of the middle space, each connecting rod is fixedly provided with a fixing rod piece, and the fixing rod pieces are fixedly provided with forming plates.

Preferably, the middle side of each connecting rod is provided with a guide groove, an elastic ring is arranged between the guide grooves of the connecting rods, eight positions of the elastic rings corresponding to the guide grooves are provided with connecting pieces, and the middle side of each connecting piece is hollow.

Preferably, the fixed rod piece fixedly arranged on each connecting rod points to the position of the circle center.

Preferably, the left side and the right side of each forming plate are in a shape of a quarter of a circular arc, adjustable threading holes are formed among the eight forming plates, the length of each forming plate is zero point five centimeters, when the sewing thread passes through the adjustable threading holes formed by the eight forming plates, the sewing thread can be contacted with two ends of each forming plate due to the direction, and the structural design of the left end and the right end of each forming plate can reduce local stress and prevent breakage.

Preferably, a control mechanism is arranged in the annular space, the control mechanism comprises a gear ring rotatably mounted between the side walls of the annular space, an inner gear ring is arranged on the inner side of the gear ring, twenty-four long rods are rotatably arranged on the front side wall of the annular space, each long rod extends backwards and penetrates through the rear side wall of the annular space to enter the middle-placed space, a small gear and an adjusting block are sequentially fixedly arranged on each long rod from front to back, each small gear is meshed with the inner gear ring of the gear ring, a fixing rod is arranged on the rear side of the adjusting block, and the fixing rod penetrates through a hollow position in the middle of the connecting piece, so that the connecting piece is mounted on the fixing rod.

Preferably, a manual rotating worm is rotatably arranged on the upper side of the annular space at the uppermost side, the manual rotating worm extends upwards into the outer space and is meshed with the outer ring of the gear ring, when the inner diameter of the threading hole needs to be adjusted to adapt to sewing threads with different diameters, the manual rotating worm is manually rotated correspondingly, at the moment, the gear ring also rotates correspondingly, thereby driving each long rod, the small gear and the adjusting block to rotate, at the moment, the fixed rod can deflect correspondingly to pull the connecting piece, because the elastic ring has elasticity, the inner diameter can be increased and reduced, and at the moment, the elastic ring can be correspondingly changed, the manual rotating worm and the gear ring at the outer side of the gear ring have self-locking performance and cannot rotate, when the inner diameter of the connecting piece is changed, the connecting rod can correspondingly slide for a certain distance under the action of the spring.

Preferably, the forming plates are internally provided with a diameter changing mechanism, each forming plate is internally provided with an arc-shaped chute, an arc-shaped guide rod is fixedly arranged between the side walls of the arc-shaped chutes, the arc-shaped guide rod is arc-shaped, a first hinged sliding block is arranged on the arc-shaped guide rod in a sliding manner, one end of each forming plate is provided with a connecting space, a guide rod is fixedly arranged in the connecting space, a second hinged sliding block is arranged on the guide rod in a sliding manner, a hinged plate is hinged between the first hinged sliding block and the adjacent second hinged sliding block, the inner side of the hinged plate is fixedly provided with a contact layer, the surface of the contact layer is subjected to finish machining, the surface friction coefficient is small, each forming plate is provided with an antifriction layer, the antifriction layer and the contact layer form an adjustable friction ring with small friction coefficient, the sewing thread penetrates through the forming plates, and when the forming plates are mutually far away under the action of the fixing rod, because the hinged plate is hinged with the first hinged sliding block and the second hinged sliding block, at the moment, the first hinged sliding block can slide on the arc-shaped guide rod for a certain distance, and the second hinged sliding block can also slide on the guide rod for a certain distance, the contact layer deflects, but two adjacent forming plates are still connected through the hinged plate, and simultaneously the contact layer and the antifriction layer form an approximate ring, the friction coefficient of the inner wall of the approximate ring is small, the sewing thread can be effectively passed through, the abrasion is reduced, and the diameter of the ring formed between the forming plates can be changed.

In conclusion, the beneficial effects of the invention are as follows:

1. according to the invention, the diameter of the threading hole can be changed, the side surfaces of the threading hole are connected all the time in the changing process, the aperture can be adjusted, so that the knitting stability is improved and the abrasion is reduced through the braided wires with different diameters, the wire breakage is prevented, the friction force of the braided wires passing through the threading hole can be reduced through the contact layer and the antifriction layer, the surfaces of the contact layer and the antifriction layer are processed smoothly, the friction loss can be effectively reduced, and the purposes of being capable of passing through the braided wires with various diameters and reducing the friction force are achieved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic view of the overall full-section structure of the hosiery machine with adjustable threading holes according to the invention;

FIG. 2 is a left side view of the needle of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the mechanism of FIG. 2 in the direction A-A;

FIG. 4 is a schematic diagram of the mechanism of the molding plate of FIG. 3 according to the present invention;

FIG. 5 is a schematic view of the mounting structure between the long rod, the small gear, the adjusting block and the fixing rod of FIG. 2 according to the present invention;

FIG. 6 is an enlarged view of a portion of the invention shown at B in FIG. 4.

The scores in the figures are as follows: 11. a sewing space of the hosiery machine; 12. a power shaft; 13. a yarn reel; 14. a yarn; 15. a wire hanging wheel; 16. a wire passing plate; 17. weaving; 18. a needle; 19. sewing thread; 20. a central space; 21. a chute; 22. a slide bar; 23. a slider; 24. a spring; 25. a middle space; 26. an annular space; 27. a long rod; 28. a pinion gear; 29. an adjusting block; 30. fixing the rod; 31. a connecting member; 32. an elastic ring; 33. manually rotating the worm; 34. a gear ring; 35. a connecting rod; 36. fixing the rod piece; 37. forming a plate; 38. an arc-shaped chute; 39. a hinge plate; 40. a contact layer; 41. an arc-shaped guide rod; 42. a first hinge slider; 43. a connection space; 44. a guide bar; 45. a second hinge slider; 46. and a friction reducing layer.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, front and rear directions described below correspond to the front, back, left, right, top and bottom directions of the view direction of fig. 1, fig. 1 is a front view of the apparatus of the present invention, and the directions shown in fig. 1 correspond to the front, back, left, right, top and bottom directions of the apparatus of the present invention.

Referring to fig. 1-6, an embodiment of the present invention is shown: a threading hole adjustable hosiery machine comprises a hosiery machine sewing space 11, wherein a power shaft 12 is arranged in the hosiery machine sewing space 11 in a rotating mode, a yarn wheel 13 is arranged on the middle side of the power shaft 12, yarns 14 are arranged on the yarn wheel 13, a hanging wheel 15 is fixedly arranged on the rear side of the power shaft 12, the hanging wheel 15 rotates along with the power shaft 12, a thread passing plate 16 is arranged on the right side of the hosiery machine sewing space 11, a needle head through hole is formed in the left side of the thread passing plate 16, a woven fabric 17 is arranged on the thread passing plate 16, a needle 18 is arranged on the upper side of the hosiery machine sewing space 11, the upper side of the needle 18 is connected with a transmission mechanism, a sewing thread 19 penetrates through the needle 18, the sewing thread 19 acts on the yarns 14 and can sew the woven fabric 17, a central space 20 is arranged on the middle side of the needle 18, the central space 20 is a circle center space, eight sliding chutes 21 are uniformly formed in the rear side wall of the central space 20 around the circle center, a middle space 25 is arranged on the front side of each sliding groove 21, a sliding mechanism is arranged in each sliding groove 21, an adjusting mechanism is arranged in each middle space 25, an annular space 26 is arranged on the front side of each middle space 25, each annular space 26 is annular, a control mechanism is arranged in each annular space 26, each annular space 26 is communicated with each middle space 25, and a reducing mechanism is arranged in each central space 20.

In addition, in one embodiment, a sliding mechanism is arranged in the sliding chute 21, the sliding mechanism comprises a sliding rod 22 fixedly installed between the side walls of the sliding chute 21, the surface of the sliding rod 22 is smooth, a sliding block 23 is arranged on the sliding rod 22 in a sliding manner, a spring 24 is fixedly arranged between the sliding block 23 and the side wall of the sliding chute 21, a connecting rod 35 is fixedly arranged on the front side of the sliding block 23, and the connecting rod 35 extends forwards to penetrate through the front side wall of the sliding chute 21 to enter the middle space 25.

In addition, in one embodiment, the adjusting mechanism includes the connecting rods 35 slidably mounted on the front side wall of the middle space 25, each connecting rod 35 is fixedly provided with a fixing rod 36, and the fixing rod 36 is fixedly provided with a forming plate 37.

In addition, in one embodiment, the middle side of the connecting rod 35 is provided with one guide groove, an elastic ring 32 is arranged between the guide grooves of each connecting rod 35, the eight positions of the elastic ring 32 corresponding to the guide grooves are provided with connecting pieces 31, and the middle side of each connecting piece 31 is hollow.

In addition, in one embodiment, the fixed rod 36 fixed on each connecting rod 35 points to the center of the circle.

In addition, in one embodiment, the left side and the right side of each of the forming plates 37 are in the shape of a quarter of a circular arc, adjustable threading holes are formed between eight forming plates 37, the length of each forming plate 37 is zero and five centimeters, when the sewing thread 19 passes through the adjustable threading holes formed by the eight forming plates 37, the sewing thread 19 can contact with two ends of each forming plate 37 due to the direction, and the structural design of the left end and the right end of each forming plate 37 can reduce local stress and prevent breakage.

In addition, in one embodiment, a control mechanism is arranged in the annular space 26, the control mechanism comprises a gear ring 34 rotatably mounted between the side walls of the annular space 26, an inner gear ring is arranged inside the gear ring 34, the front side wall of the annular space 26 is rotatably provided with twenty-four long rods 27, each long rod 27 extends backwards to penetrate through the rear side wall of the annular space 26 to enter the middle space 25, the long rods 27 are sequentially fixedly provided with a pinion 28 and an adjusting block 29 from front to back, each pinion 28 is engaged with the inner gear ring of the gear ring 34, the rear side of the adjusting block 29 is provided with a fixing rod 30, and the fixing rod 30 penetrates through a hollow position in the middle of the connecting piece 31, so that the connecting piece 31 is mounted on the fixing rod 30.

In addition, in an embodiment, a manual rotating worm 33 is rotatably arranged on the upper side of the uppermost annular space 26, the manual rotating worm 33 extends upwards into the outer space, the manual rotating worm 33 is meshed with the outer ring of the gear ring 34, when the inner diameter of the threading hole needs to be adjusted to adapt to sewing threads with different diameters, the manual rotating worm 33 is manually and correspondingly rotated, at the same time, the gear ring 34 is correspondingly rotated, so as to drive each long rod 27, the pinion 28 and the adjusting block 29 to rotate, at the same time, the fixing rod 30 is correspondingly deflected, the connecting piece 31 is pulled, the inner diameter can be increased and reduced due to the elasticity of the elastic ring 32, at the same time, the elastic ring 32 is correspondingly changed, and the manual rotating worm 33 has self-locking performance with the gear ring on the outer side of the gear ring 34 and cannot rotate, when the inner diameter of the connecting member 31 is changed, the connecting rod 35 is also slid by a certain distance by the spring 24.

In addition, in one embodiment, a diameter changing mechanism is arranged in the forming plates 37, an arc-shaped chute 38 is arranged in each forming plate 37, an arc-shaped guide rod 41 is fixedly arranged between the side walls of the arc-shaped chute 38, the arc-shaped guide rod 41 is arc-shaped, a first hinge sliding block 42 is slidably arranged on the arc-shaped guide rod 41, a connecting space 43 is arranged at one end of each forming plate 37, a guide rod 44 is fixedly arranged in the connecting space 43, a second hinge sliding block 45 is slidably arranged on the guide rod 44, a hinge plate 39 is hinged between the first hinge sliding block 42 and the adjacent second hinge sliding block 45, a contact layer 40 is fixedly arranged on the inner side of the hinge plate 39, the surface of the contact layer 40 is subjected to finish machining, the surface friction coefficient is small, an anti-friction layer 46 is arranged on each forming plate 37, and the anti-friction layer 46 and the contact layer 40 form an adjustable friction ring with a small friction coefficient, when the sewing thread 19 passes through the forming plates 37, which are moved away from each other by the fixing rod 36, the first hinge block 42 slides on the arc guide rod 41 for a certain distance due to the hinge plate 39 being hinged to the first hinge block 42 and the second hinge block 45, and the second hinge block 45 also slides on the guide rod 44 for a certain distance, the contact layer 40 deflects, but the adjacent two forming plates 37 are still connected by the hinge plate 39, and the contact layer 40 and the antifriction layer 46 form an approximate circular ring, the inner wall friction coefficient of which is small, so that the sewing thread 19 can be effectively passed through, the abrasion can be reduced, and the diameter of the circular ring formed between the forming plates 37 can be changed.

In the initial state, the slider 23 is at the lowermost side, the inner diameter between the elastic rings 32 is the smallest, and the inner diameter of the adjustable threading hole formed between the eight forming plates 37 is the smallest.

In specific implementation, along with the continuous rotation of the power shaft 12, the fabric 17 continuously moves leftwards under the pushing of a user, at this time, the power shaft 12 will pay out the yarn 14, the needle 18 will continuously pass the sewing thread 19 through the needle hole of the thread passing plate 16 to enter the lower side of the thread passing plate 16, at this time, the thread hanging wheel 15 will hang the sewing thread 19 for one circle, and then the sewing thread 19 will be crossed with the yarn 14, thereby completing the sewing, when the inner diameter of the thread passing hole needs to be adjusted to adapt to the sewing threads with different diameters, the manual rotating worm 33 is manually rotated correspondingly, at this time, the gear ring 34 will also rotate correspondingly, thereby driving each long rod 27, the pinion 28 and the adjusting block 29 to rotate, at this time, the fixing rod 30 will deflect correspondingly, the connecting piece 31 is pulled, because the elastic ring 32 has elasticity, the inner diameter can be increased and decreased, at this time, the elastic ring 32 will change correspondingly, and the manual rotating worm 33 and the gear ring 34 have self-locking performance, will not rotate, when the inner diameter of the connecting piece 31 changes, the connecting rod 35 will slide a certain distance under the action of the spring 24, when the shaping plates 37 are far away from each other under the action of the connecting rod 35, because the hinge plate 39 is hinged with the first hinge slide block 42 and the second hinge slide block 45, the first hinge slide block 42 will slide a certain distance on the arc-shaped guide rod 41, and the second hinge slide block 45 will slide a certain distance on the guide rod 44, the contact layer 40 will deflect a certain amount, but the adjacent two shaping plates 37 are still connected by 49, and the contact layer 40 and the antifriction layer 46 will form an approximate ring, the inner wall friction coefficient of the approximate ring is small, and can effectively pass through the sewing thread 19, reduce the abrasion, and the diameter of the ring formed between the shaping plates 37 can change, when the sewing thread 19 passes through the adjustable thread holes formed by the eight shaping plates 37, due to the directional form, the sewing thread 19 will contact with the two ends of the forming plate 37, and the structural design of the left and right ends of the forming plate 37 can reduce the local stress and prevent the fracture.

The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.