CN216473857U

CN216473857U - Line ball board and have outer shuttle of this line ball board

Info

Publication number: CN216473857U
Application number: CN202123452641.5U
Authority: CN
Inventors: 汪小勇; 李刚
Original assignee: Ningbo Yinzhou Yongyao Sewing Machinery Co ltd
Current assignee: Ningbo Yinzhou Yongyao Sewing Machinery Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-10
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to a line ball board and have outer shuttle of this line ball board belongs to sewing device's technical field, its including be used for with outer shuttle main part be connected connecting portion and with the line ball portion that connecting portion are connected, the line ball board have the leading-out terminal and be used for with the spacing wall that the wire loop leads with the line ring butt, the dashpot is seted up to spacing wall, the dashpot is located the leading-out terminal. The application has the effect that the wire ring is not easy to be broken.

Description

Line ball board and have outer shuttle of this line ball board

Technical Field

The application relates to the field of sewing devices, in particular to a thread tension plate and an outer shuttle with the thread tension plate.

Background

The rotating shuttle is an important part inside the sewing machine, and among sewing machine equipment, sewing machines sewing with lock stitch are the most common, and the rotating shuttle of the lock stitch sewing machine comprises an inner shuttle and an outer shuttle, and the thread loop is hooked by the shuttle tip of the outer shuttle to drive the thread loop to rotate around a lock core for one circle to form the lock stitch.

In the correlation technique, the inside interior shuttle holding tank that is used for placing interior shuttle that offers of outer shuttle, installs the line ball board on the circumference lateral wall of outer shuttle. When the rotating shuttle mechanism works, the outer shuttle rotates and enables the shuttle point of the outer shuttle to hook the wire loop, so that the wire loop is driven to rotate for a circle, and then the wire loop is pulled out from the inner side wall of the wire pressing plate under the traction of the wire pulling device. The wire ring is guided by the wire pressing plate and the pulled-out position and the pulled-out direction of the wire ring are limited.

In view of the above-mentioned related technologies, the inventor thinks that in the above-mentioned technical solution, because the wire loop is thin, the pulling force that the wire loop can bear is limited, and because the rotational speed of the outer shuttle is fast, and the speed that the wire loop is pulled out from the line pressing plate is also fast, in the process of pulling out the wire loop, the wire loop abuts against the inner side wall of the line pressing plate, thereby generating a certain pressure to the wire loop, and making the wire loop be easily pulled apart.

SUMMERY OF THE UTILITY MODEL

In order to ensure that the wire ring is not easy to be pulled off in the process of pulling out the wire ring from the wire pressing plate, the application provides the wire pressing plate and the outer shuttle with the wire pressing plate.

The application provides a line ball board and outer shuttle that has this line ball board adopt following technical scheme:

the utility model provides a line ball board, including be used for with outer shuttle main part be connected connecting portion and with the line ball portion that connecting portion are connected, line ball board has the leading-out terminal and is used for with the spacing wall that the wire loop butt leads in order to carry out the line ring, the dashpot is seted up to spacing wall, the dashpot is located the leading-out terminal.

Through adopting above-mentioned technical scheme, at the in-process that the pull cord device drew the wire loop, there is certain contained angle in pull cord device to the direction that the direction of drawing of wire loop and wire loop follow the wire-out end shifted out, and this contained angle is the obtuse angle, after seting up the sliding groove on spacing wall, the wire loop gets into the dashpot through spacing wall in, and slide in the dashpot, at the in-process that the wire loop got into the dashpot, certain angle deflection in advance takes place for the wire loop, the moving direction of wire loop in spacing wall and the moving direction of wire loop in the dashpot are not on the same straight line promptly. Through setting up the dashpot, increased the contained angle between the direction that the wire loop shifted out from the leading-out terminal and the direction of pulling of draw off mechanism, made the angle of this contained angle reach 180 as far as to the effort that line ball board exerted to the wire loop has been reduced.

Optionally, the line pressing part is provided with a buffer slot wall, the buffer slot is surrounded by the buffer slot wall, the limiting wall and the inner side wall of the connecting part, and the buffer slot wall is obliquely arranged from one side far away from the wire outlet end to one side close to the wire outlet end towards the slot bottom of the buffer slot.

By adopting the technical scheme, after the wire loop enters the buffer groove through the buffer groove wall, the moving direction of the wire loop is gradually changed by obliquely arranging the buffer groove wall, so that the change trend of the angle of the moving direction of the wire loop is smoother; meanwhile, the acting force of the edges of the buffer groove wall on the wire ring is reduced, so that the wire ring is not easy to break at the edges and corners.

Optionally, the crimping portion has a lead wall for guiding the wire loop to the stopper wall, and a first corner guide wall is disposed between the lead wall and the stopper wall.

By adopting the technical scheme, the moving direction of the wire ring is gradually changed by arranging the first angle guiding wall, so that the angle change trend of the moving direction of the wire ring is smoother; when the first chamfer wall is not arranged, the contact area between the lateral edge between the lead wall and the limiting wall and the wire ring is smaller, so that the pressure between the wire ring and the wire pressing part is larger, and the wire ring is easy to break.

Optionally, a second corner guide wall is disposed between the lead wall and the groove bottom of the buffer groove.

By adopting the technical scheme, the movement tracks of the wire rings on the wire pressing plate are not consistent, so that the contact positions of the wire rings and the wire pressing part are not the same, and the wire rings are further protected by arranging the second corner guide wall.

Optionally, the wire outlet end is provided with a wire outlet wall for leading out the wire ring, the wire outlet wall is connected with the bottom of the buffer groove, and an included angle between the wire outlet wall and the bottom of the buffer groove is arranged at an obtuse angle.

Through adopting above-mentioned technical scheme, when the wire loop shifts out from the wire-out end under wire pressing device's traction, the wire-out wall carries out the guide effect to the wire loop, simultaneously, because the contained angle between wire-out wall and the tank bottom is the obtuse angle, makes the change trend of wire loop moving direction gentler to make the wire loop be difficult for being broken by the tension.

Optionally, the connecting portion has a connecting wall connected to the wire outlet wall, and the connecting wall and the wire outlet wall are located in the same plane.

By adopting the technical scheme, when the connecting wall and the wire outlet wall are not in the same plane, the connecting wall can generate certain pressure on the wire loop, so that the wire loop is easy to break due to the acting force of the connecting wall on the wire loop.

Optionally, the connecting portion is provided with a connecting hole, and the sectional area of the connecting hole gradually increases from the inner side wall of the connecting portion to the outer side wall of the connecting portion.

By adopting the technical scheme, when the thread pressing plate is fixed on the outer shuttle through the screw, the nut part of the screw can be hidden in the connecting hole, so that the nut of the screw is not easy to protrude out of the outer side wall of the thread pressing plate, thereby reducing the interference generated on the thread ring or the thread led out from the inner shuttle and further reducing the thread breakage.

Optionally, the outer shuttle includes a thread pressing plate and an outer shuttle main body, the outer shuttle main body includes a rotating portion and a driving portion connected to the rotating portion, the rotating portion is provided with an inner shuttle accommodating groove for accommodating the inner shuttle, and an inner side wall of the outer shuttle main body is provided with a positioning groove communicated with the inner shuttle accommodating groove and used for the inner shuttle to be inserted into.

By adopting the technical scheme, in the process that the inner shuttle is installed on the outer shuttle, the inner shuttle is embedded into the positioning groove firstly to pre-fix the inner shuttle, and meanwhile, in the rotating process of the outer shuttle, the inner shuttle is not easy to move axially in the outer shuttle.

Optionally, at least one oil feeding hole is formed in a circumferential side wall of the rotating portion.

By adopting the technical scheme, the oil hole is formed in the side wall on the outer side, so that the flexible lubricating oil is conveniently added into the outer shuttle, and the friction force between the inner side wall of the outer shuttle and the inner shuttle in the rotating process of the outer shuttle is reduced.

Optionally, a locking hole is formed in the circumferential side wall of the driving portion, and the locking hole is a stepped hole.

Through adopting above-mentioned technical scheme, when drive division and drive shaft transmission are connected, wear to locate the drive shaft through the shoulder hole with the screw in, through setting up the shoulder hole, can hide the nut of screw in the shoulder hole, reduced drive division at the pivoted in-process, the nut of screw produced the interference to other mechanisms.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the buffer groove is arranged, so that the wire loop is not easy to break in the process of pulling out the wire loop by changing a certain preset angle of the wire loop;

2. the wire outlet wall is obliquely arranged, so that the angle change trend of the wire ring is smoother in the process of pulling out the wire ring, and the wire ring is not easy to break;

3. the sectional area from the inner side wall of the connecting part to the outer side wall of the connecting part is gradually increased through the connecting hole, so that the screw can be hidden in the connecting hole, and the nut of the screw is not easy to interfere with a wire ring.

Drawings

Fig. 1 is a schematic view of the overall structure of an outer shuttle according to an embodiment of the present application.

Fig. 2 is an exploded view of the tension disc and the outer shuttle body according to the embodiment of the present application.

Fig. 3 is a schematic structural diagram of the whole of the tension disc of the embodiment of the present application.

Fig. 4 is an overall structural schematic diagram of another view of the outer shuttle according to the embodiment of the present application.

Description of reference numerals: 1. a wire pressing plate; 11. a connecting portion; 111. connecting holes; 112. a connecting wall; 12. a wire pressing part; 13. a wire outlet end; 131. an outlet wall; 14. a limiting wall; 15. a buffer tank; 151. a buffer slot wall; 16. a lead wall; 17. a first corner wall; 18. a second corner guide wall; 2. an outer shuttle body; 3. a rotating part; 31. an inner shuttle receiving groove; 32. a wiring port; 33. a fixing hole; 34. a shuttle tip; 35. positioning a groove; 36. an upper oil hole; 4. a drive section; 41. a shaft hole; 42. a locking hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses an outer shuttle.

Referring to fig. 1, the outer shuttle includes a thread tension disc 1 and an outer shuttle main body 2, the outer shuttle main body 2 includes a rotating portion 3 and a driving portion 4 integrally connected with the rotating portion 3, the rotating portion 3 and the driving portion 4 are both ring-shaped, an inner shuttle accommodating groove 31 for installing the inner shuttle is provided inside the rotating portion 3, the rotating portion 3 is provided with a wiring port 32 for the wire loop to pass in and out, meanwhile, the wire led out inside the inner shuttle is also led out through the wiring port 32, the thread tension disc 1 is fixedly connected on the circumferential outer side wall of the rotating portion 3, and the driving portion 4 is in transmission connection with a driving shaft.

When the rotating shuttle works, the driving shaft drives the driving part 4 to rotate so as to drive the outer shuttle and the line pressing plate 1 to rotate, the inner shuttle is still in the outer shuttle, the wire loop rotates for a circle under the driving of the outer shuttle, and finally the wire loop is pulled out from the wire connecting port 32 under the limiting action of the line pressing plate 1 and is wound with the wire led out by the inner shuttle to form a wire knot.

Referring to fig. 2, the tension plate 1 is arc-shaped, the tension plate 1 includes a connecting portion 11 and a tension part 12, the connecting portion 11 is provided with a connecting hole 111, the side wall of the rotating part 3 is provided with a fixing hole 33 corresponding to the connecting hole 111, and a screw passes through the connecting hole 111 and the fixing hole 33 and is in threaded connection with the rotating part 3, so that the installation of the tension plate 1 is realized. The connection hole 111 is shaped like a circular truncated cone, and one end of the connection hole 111 having a larger aperture is located on the outer side wall of the connection portion 11. After the screw passes through the connecting hole 111 and is fixedly connected with the outer thread, the nut part of the screw is hidden in the connecting hole 111, and the interference of the nut of the screw to the wire ring is reduced. In this embodiment, the number of the connection holes 111 may be one or several, and three connection holes 111 are provided, and correspondingly, three fixing holes 33 are also provided.

Referring to fig. 2 and 3, the connecting portion 11 and the pressing portion 12 are perpendicular to each other and integrally connected, the pressing portion 12 abuts against an end surface of the rotating portion 3 away from the driving portion 4, and the pressing portion 12 partially protrudes from the end surface of the rotating portion 3 away from the driving portion 4 to cover a part of the notch of the inner shuttle accommodating groove 31. One side of the crimping part 12 close to the bottom of the inner shuttle accommodating groove 31 is provided with a limiting wall 14, when the outer shuttle works, the wire ring is abutted against the limiting wall 14, and the limiting wall 14 guides and limits the wire ring; one end of the crimping part 12 close to the wire connecting port 32 is a wire outlet end 13, and the wire loop is pulled out from the wire outlet end 13 by the wire crimping device.

Referring to fig. 3, the limiting wall 14 is provided with a buffer slot 15, the buffer slot 15 is located on one side of the limiting wall 14 close to the wire outlet end 13, and the wire ring is not easily broken in the process of being pulled out from the wire outlet end 13 by the buffer slot 15. Further, buffer slot 15 has buffer slot wall 151, buffer slot wall 151 is located at one side of buffer slot 15 far away from outlet end 13, and buffer slot wall 151 inclines towards one side of the slot bottom from one side far away from outlet end 13 to one side close to outlet end 13, i.e. buffer slot wall 151 inclines towards the slot bottom of buffer slot 15 along the direction that the wire loop is pulled out.

Referring to fig. 3, the crimping portion 12 has a lead wall 16 perpendicularly connected to the stopper wall 14, the wire loop is guided to the stopper wall 14 by the lead wall 16, a first corner guide wall 17 is provided between the lead wall 16 and the stopper wall 14, and a second corner guide wall 18 is provided between the lead wall 16 and the bottom of the buffer groove 15. By providing the first corner guide wall 17 and the second corner guide wall 18, the wire loop is less likely to be broken during the process of being guided to the stopper wall 14.

Referring to fig. 3, the wire outlet end 13 has a wire outlet wall 131, the wire outlet wall 131 is used for abutting against the wire ring to guide and limit the wire outlet direction of the wire ring, the wire outlet wall 131 is connected with the bottom of the buffer groove 15, and the two are arranged at an obtuse angle; one end surface of the connecting portion 11 near the outlet end 13 is a connecting wall 112, and the connecting wall 112 is disposed obliquely and is in the same plane as the outlet wall 131. By arranging the connecting wall 112 and the wire outlet wall 131 in an inclined manner, the wire ring is not easily broken in the process of being pulled out.

Referring to fig. 1, one end of the rotating portion 3 close to the wire connecting port 32 has a sharp pointed end 34, the sharp pointed end 34 is disposed obliquely, the sharp pointed end of the sharp pointed end 34 protrudes from the end surface of the rotating portion 3 away from the driving portion 4 in the axial direction of the rotating portion 3 and one side wall of the wire pressing portion 12 away from the driving portion 4, so that the sharp pointed end 34 can catch the wire loop.

Referring to fig. 1, constant head tank 35 has been seted up to rotating part 3's inside wall circumference, and constant head tank 35 is the arc setting, and constant head tank 35 is linked together with interior shuttle holding tank 31, when installing interior shuttle, fixes a position the interior shuttle through constant head tank 35, makes the difficult notch from interior shuttle holding tank 31 of interior shuttle drop, and is spacing to interior shuttle in rotating part 3's axial direction simultaneously.

Referring to fig. 2, at least one upper oil hole 36 is formed in a circumferential side wall of the rotating portion 3, and lubricating oil is added to the inside of the rotating portion 3 through the upper oil hole 36, so that when the outer shuttle rotates, a frictional force between an inner side wall of the outer shuttle and an outer side wall of the inner shuttle is reduced. Wherein, the number of the upper oil holes 36 can be determined according to actual needs.

Referring to fig. 4, the driving portion 4 is provided with a shaft hole 41 for the driving shaft to pass through, the shaft hole 41 is communicated with the inner shuttle accommodating groove 31, and the driving portion 4 is driven by the driving shaft to rotate, so as to drive the rotating portion 3 to rotate. Meanwhile, a locking hole 42 is formed in the circumferential side wall of the driving portion 4, the locking hole 42 is a stepped hole, one end face with the larger radius of the stepped hole is communicated with the outer side wall of the driving portion 4, and a screw penetrates through the locking hole 42 and is in threaded connection with the driving shaft, so that the driving shaft and the driving portion 4 are not prone to relative sliding. In this embodiment, three locking holes 42 are provided, and the three locking holes 42 are spaced apart from the circumferential side wall of the driving portion 4.

The implementation principle of the tension disc and the outer shuttle with the tension disc 1 in the embodiment of the application is as follows: when the outer shuttle works, the driving part 4 drives the rotating part 3 to rotate, and then drives the line pressing plate 1 to rotate, the shuttle point hooks the line ring to rotate for a circle, then the line ring is pulled out from the line outlet end 13 through the limiting wall 14 and the buffering groove 15, the line ring is not easy to be pulled apart through the guiding of the buffering groove 15 and the line outlet wall 131, and finally the line ring and the line pulled out by the inner shuttle are wound together to form a line knot to act on the cloth.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A tension disc, characterized in that: the shuttle hook comprises a connecting part (11) used for being connected with an outer shuttle main body (2) and a line pressing part (12) connected with the connecting part (11), wherein the line pressing part (12) is provided with a line outgoing end (13) and a limiting wall (14) used for being abutted to a line ring to guide the line ring, the limiting wall (14) is provided with a buffer groove (15), and the buffer groove (15) is positioned at the line outgoing end (13).

2. A tension disc according to claim 1, wherein: line ball portion (12) have buffer tank wall (151), buffer tank (15) by buffer tank wall (151), spacing wall (14) and the inside wall of connecting portion (11) encloses, buffer tank wall (151) are kept away from one side of leading-out terminal (13) is to being close to one side orientation of leading-out terminal (13) the tank bottom slope setting of buffer tank (15).

3. A tension disc according to claim 1, wherein: the crimping section (12) has a lead wall (16) for guiding the wire loop to the stopper wall (14), and a first corner guide wall (17) is provided between the lead wall (16) and the stopper wall (14).

4. A tension disc according to claim 3, wherein: and a second corner guide wall (18) is arranged between the lead wall (16) and the bottom of the buffer groove (15).

5. A tension disc according to claim 1, wherein: the wire outlet end (13) is provided with a wire outlet wall (131) which is used for being abutted to the wire ring to draw out the wire ring, the wire outlet wall (131) is connected with the bottom of the buffer groove (15), and an included angle between the wire outlet wall (131) and the bottom of the buffer groove (15) is arranged in an obtuse angle.

6. A tension disc according to claim 5, wherein: the connecting part (11) is provided with a connecting wall (112) connected with the outgoing line wall (131), and the connecting wall (112) and the outgoing line wall (131) are located in the same plane.

7. A tension disc according to claim 1, wherein: the connecting part (11) is provided with a connecting hole (111), and the sectional area of the connecting hole (111) from the inner side wall of the connecting part (11) to the outer side wall of the connecting part (11) is gradually increased.

8. An outer shuttle, comprising: the thread pressing plate (1) comprises the thread pressing plate (1) as claimed in any one of claims 1 to 7, and an outer shuttle main body (2), wherein the outer shuttle main body (2) comprises a rotating part (3) and a driving part (4) connected with the rotating part (3), an inner shuttle accommodating groove (31) for accommodating an inner shuttle is formed in the rotating part (3), and a positioning groove (35) communicated with the inner shuttle accommodating groove (31) and used for allowing the inner shuttle to be embedded is formed in the inner side wall of the outer shuttle main body (2).

9. An outer shuttle according to claim 8 wherein: at least one upper oil hole (36) is formed in the circumferential side wall of the rotating part (3).

10. An outer shuttle according to claim 8 wherein: the circumferential side wall of the driving part (4) is provided with a locking hole (42), and the locking hole (42) is a stepped hole.