CN215517933U

CN215517933U - Rotating shuttle inner shuttle with positioning structure

Info

Publication number: CN215517933U
Application number: CN202122021164.0U
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: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-01-14
Anticipated expiration: 2031-08-25

Abstract

The application relates to a rotating shuttle inner shuttle with a positioning structure, which relates to the field of sewing machine part technology and comprises a main frame, wherein a mounting groove for installing a bobbin case is arranged on the main frame, a central shaft is arranged on the bottom surface of the mounting groove, and a positioning block for abutting against the side wall of the bobbin case notch is arranged on the side wall of the mounting groove. This application has the effect that reduces bobbin case circumferential direction in the interior shuttle.

Description

Rotating shuttle inner shuttle with positioning structure

Technical Field

The application relates to the technical field of sewing machine parts, in particular to a rotating shuttle inner shuttle with a positioning structure.

Background

The rotary hook is an important component of sewing machines, among which sewing machines for sewing with lock stitch are most common, and most of these sewing machines employ a rotary hook which hooks a loop with its hook tip while enlarging the loop and guiding the loop around a bobbin to form the lock stitch.

In the related art, a rotary shuttle includes an outer shuttle, an inner shuttle, and a bobbin case, the outer shuttle is disposed outside the inner shuttle, the bobbin case is installed inside the inner shuttle, and when the outer shuttle and the inner shuttle rotate relatively, the bobbin case and the inner shuttle are relatively fixed.

In view of the above-mentioned related art, the inventor believes that after the bobbin case is mounted on the inner shuttle, when the fixing member is not mounted, the bobbin case may circumferentially rotate in the inner shuttle, which results in inconvenient subsequent mounting of the rotary shuttle, and has room for improvement.

SUMMERY OF THE UTILITY MODEL

To improve the problem that a bobbin case may rotate circumferentially in a inner shuttle, the present application provides a rotary shuttle inner shuttle having a positioning structure.

The application provides a rotating shuttle inner shuttle with location structure adopts following technical scheme:

the rotating shuttle inner shuttle with the positioning structure comprises a main frame, wherein a mounting groove for mounting a shuttle core sleeve is formed in the main frame, a central shaft is arranged on the bottom surface of the mounting groove, and a positioning block used for abutting against the side wall of a gap of the shuttle core sleeve is arranged on the side wall of the mounting groove.

By adopting the technical scheme, in the process of installing the bobbin case in the installation groove, the bobbin case is matched with the central shaft to realize the primary positioning of the position of the bobbin case, so that the bobbin case is aligned with the center of the inner shuttle and can be better installed in the main frame; after the bobbin case is arranged in the mounting groove, the positioning block is abutted against the side wall of the notch of the bobbin case, so that the bobbin case is not easy to rotate circumferentially in the mounting groove, and subsequent mounting of other parts is facilitated.

Optionally, the positioning block includes a fixing portion and a telescopic portion, and an insertion groove for inserting the telescopic portion is formed in one side wall of the fixing portion in the circumferential direction.

By adopting the technical scheme, the telescopic part can move relative to the fixing part due to the matching of the insertion groove and the telescopic part, so that the whole width of the positioning block can be changed; after the bobbin case is installed, the telescopic part is moved out to enable the telescopic part to abut against the side wall of the notch of the bobbin case, so that the bobbin case is circumferentially fixed in the installation groove.

Optionally, a thread groove is formed in the telescopic portion, a fixing hole capable of being aligned with the thread groove is formed in the side wall of the insertion groove, and a fixing bolt capable of being in threaded connection with the thread groove is inserted in the fixing hole.

By adopting the technical scheme, after the installation of the bobbin case is completed, the fixing bolt penetrates through the fixing hole to be in threaded connection with the thread groove, so that the telescopic part is fixed in the insertion groove, and the rotating shuttle can be normally used after the installation is completed.

Optionally, a placing groove for placing the screw head of the fixing bolt is circumferentially arranged on the opening of the fixing hole, which is far away from the side wall of the inserting groove.

Through adopting above-mentioned technical scheme, seting up of standing groove makes fixing bolt's spiral shell head can not bulge the surface of fixed part to the condition that the spiral shell head that reduces fixing bolt produced the influence to other part installations takes place.

Optionally, the side wall of the telescopic part is provided with a sliding block, and the side wall of the insertion groove is provided with a sliding groove for the sliding block to slide along the depth direction of the insertion groove.

Through adopting above-mentioned technical scheme, the cooperation in sliding block and sliding groove makes the pars contractilis receive the guide effect at the in-process that removes to it is comparatively stable to make the pars contractilis remove in the inserting groove.

Optionally, the opening of the sliding groove is provided with a limiting block which can be abutted against the sliding block.

Through adopting above-mentioned technical scheme, when the flexible portion removed to the direction of keeping away from the inserting groove bottom surface, the sliding block followed the flexible portion and removed, after the sliding block removed the certain distance, the sliding block can with the stopper joint, make the sliding block can't continue to move towards former direction to make the flexible portion can't continue to move towards former direction, take place with the condition that reduces the flexible portion and follow the inserting groove and shift out completely, improved the stability of flexible portion in the use.

Optionally, the bottom surface of the insertion groove is connected with a spring, and one end of the spring, which is far away from the bottom surface of the insertion groove, is connected to the telescopic part.

Through adopting above-mentioned technical scheme, at the in-process of shuttle peg cover installation, the extrusion pars contractilis makes pars contractilis extrusion spring, makes the spring compressed gradually, and after the shuttle peg cover installation was accomplished, unclamp the pars contractilis and can make the spring pop out the pars contractilis to the use of pars contractilis.

Optionally, the bottom surface of the insertion groove is provided with a guide rod, the telescopic part is provided with a guide groove for the guide rod to be inserted, and the spring is sleeved on the outer surface of the guide rod.

Through adopting above-mentioned technical scheme, the cooperation of guide arm and guide slot is further carried on spacingly to the pars contractilis, makes the pars contractilis remove comparatively stably, and the guide arm is radial spacing to the spring simultaneously, makes the spring can stretch out and draw back along the width direction of guide arm to the in-process that makes the spring use is comparatively stable.

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

1. the bobbin sleeve is arranged in the inner shuttle through the arrangement of the positioning block so as to be circumferentially limited, and other components can be conveniently arranged;

2. the width of the positioning block can be adjusted, so that the bobbin case can be conveniently arranged in the inner shuttle, and meanwhile, the positioning block can also play a role in limiting the circumference of the bobbin case;

3. the setting up of spring makes the staff can be comparatively convenient remove the pars contractilis to realize the adjustment of locating piece width.

Drawings

FIG. 1 is a schematic structural view of a inner shuttle of a rotary shuttle having a positioning structure according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a locating block of an embodiment of the present application;

fig. 3 is an enlarged view of a portion a in fig. 2.

Description of reference numerals: 1. a main frame; 2. mounting grooves; 3. a central shaft; 4. positioning blocks; 41. a fixed part; 42. a telescopic part; 5. inserting grooves; 6. a thread groove; 7. a fixing hole; 8. fixing the bolt; 9. a placement groove; 10. a sliding block; 11. a sliding groove; 12. a limiting block; 13. a spring; 14. a guide bar; 15. and a guide groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a rotating shuttle inner shuttle with a positioning structure. Referring to fig. 1, the inner shuttle of the rotary shuttle with a positioning structure comprises a main frame 1, wherein an installation groove 2 for installing a bobbin case is arranged on the main frame 1, the radial section of the installation groove 2 is circular, a central shaft 3 for installing the bobbin and the bobbin case is welded on the bottom surface of the installation groove 2, the central shaft 3 is perpendicular to the bottom surface of the installation groove 2, and the central shaft 3 and the installation groove 2 are coaxially arranged. The welding has locating piece 4 on the lateral wall of mounting groove 2, the cambered surface setting of 2 lateral walls of mounting groove is followed to locating piece 4, install the in-process in mounting groove 2 at the shuttle peg sleeve, the shuttle peg sleeve passes center pin 3 and makes the shuttle peg sleeve align with body frame 1 center, the shuttle peg sleeve can be comparatively convenient install in mounting groove 2 this moment, when the breach lateral wall butt of shuttle peg sleeve goes up the both sides wall of circumference on locating piece 4, the difficult circumferential direction that takes place of the relative body frame 1 of shuttle peg sleeve, thereby make the shuttle peg sleeve can be preliminary location on body frame 1, so that the installation of other parts.

Referring to fig. 1 and 2, for the convenience of bobbin case installation in mounting groove 2 with the both sides wall butt of locating piece 4, locating piece 4 includes fixed part 41 and pars contractilis 42, fixed part 41 and pars contractilis 42 are the arc piece that uses the 3 axes of center pin as the axis, fixed part 41 welds in the lateral wall of mounting groove 2, inserting groove 5 has been seted up on a lateral wall of fixed part 41 circumference, inserting groove 5 is the arc wall that uses the 3 axes of center pin as the axis, pars contractilis 42 pegs graft in inserting groove 5, inserting groove 5 and pars contractilis 42 looks adaptation.

Referring to fig. 2 and 3, a thread groove 6 is formed in the end face, far away from the bottom face of the mounting groove 2, of the expansion portion 42, the end face, far away from the bottom face of the mounting groove 2, of the thread groove 6 is perpendicular to the axis of the expansion portion 42, the end face of the thread groove 6 is formed in the end face of the thread groove 6, fixing holes 7 capable of being aligned with the thread grooves 6 one by one are formed in the side wall of the insertion groove 5, the fixing holes 7 penetrate through the fixing portion 41, when the fixing holes 7 are aligned with the thread grooves 6, the expansion portion 42 can abut against the side wall of the notch of the bobbin case, the fixing bolt 8 is inserted into the fixing holes 7, and the fixing bolt 8 penetrates through the fixing holes 7 to be in threaded connection with the thread grooves 6 to fix the position of the expansion portion 42 in the insertion groove 5.

In the installation of bobbin case, make pars contractilis 42 shrink in inserting groove 5, 4 width of locating piece shorten this moment, make the breach of bobbin case can be better with locating piece 4 looks adaptation, when keeping away from the lateral wall butt of pars contractilis 42 on a lateral wall of bobbin case breach and fixed part 41, move pars contractilis 42 from inserting groove 5 and make pars contractilis 42 keep away from the lateral wall butt of fixed part 41 and another lateral wall butt of bobbin case breach, fix pars contractilis 42 again, make the bobbin case difficult rotation in mounting groove 2. In order to reduce the influence of the fixing bolt 8 on the installation of other components, a placing groove 9 is circumferentially formed in the side wall of the fixing hole 7, which is far away from the side wall of the inserting groove 5, and the placing groove 9 penetrates through the end opening, the radial cross section of the placing groove 9 is circular, the placing groove 9 is coaxially arranged with the fixing hole 7, when the fixing bolt 8 is completely matched with the thread groove 6, the thread head of the fixing bolt 8 is inserted into the placing groove 9, so that the thread head of the fixing bolt 8 cannot protrude out of the outside, and the situation that the thread head of the fixing bolt 8 influences the installation of other components is reduced.

In order to reduce the occurrence of the situation that the telescopic part 42 is completely moved out of the insertion groove 5, the sliding blocks 10 are welded on the two opposite side walls of the telescopic part 42, the sliding blocks 10 are arc-shaped blocks taking the axis of the central shaft 3 as the axis, the sliding grooves 11 for the sliding blocks 10 to slide along the length direction of the insertion groove 5 are formed in the side walls of the insertion groove 5, the sliding grooves 11 are matched with the sliding blocks 10, the sliding grooves 11 are arc-shaped grooves taking the axis of the central shaft 3 as the axis, the limiting blocks 12 capable of being abutted to the sliding blocks 10 are welded at the openings of one ends of the sliding grooves 11 far away from the bottom surface of the insertion groove 5, when the sliding blocks 10 are abutted to the limiting blocks 12, one ends of the telescopic part 42 far away from the fixing part 41 are abutted to the notch side walls of the bobbin case, and the fixing holes 7 are aligned to the thread grooves 6.

Referring to fig. 2, in order to facilitate the movement of the telescopic portion 42, a guide rod 14 is welded to the bottom surface of the insertion groove 5, the guide rod 14 is an arc-shaped rod taking the axis of the central shaft 3 as an axis, a guide groove 15 for the guide rod 14 to be inserted and slid is formed in an end surface, close to the bottom surface of the insertion groove 5, of the telescopic portion 42, the guide groove 15 is an arc-shaped groove taking the axis of the central shaft 3 as an axis, and the radial cross-sectional shape and size of the guide groove 15 are the same as the longitudinal cross-sectional shape and size of the arc-shaped rod. In the process of moving the telescopic part 42, the guide rod 14 is matched with the guide groove 15 to enable the telescopic part 42 to move for limiting, so that the telescopic part 42 moves stably. The bottom surface of the inserting groove 5 is welded with the spring 13, the outer surface of the guide rod 14 is sleeved with the spring 13, one end, far away from the bottom surface of the inserting groove 5, of the spring 13 is welded on the end face, close to the bottom surface of the inserting groove 5, of the telescopic portion 42, and when the spring 13 is in a natural state, the telescopic portion 42 can just abut against the side wall of the notch of the bobbin case. In the installation process of the bobbin case, the telescopic part 42 is extruded to enable the telescopic part 42 to be contracted in the insertion groove 5, at the moment, the telescopic part 42 extrudes the spring 13 to enable the spring 13 to be contracted, and the guide rod 14 radially limits the spring 13 in the contraction process of the spring 13 to enable the spring 13 to move along a preset arc-shaped track; when the bobbin case is mounted, the telescopic part 42 is released, the extrusion force on the telescopic part 42 disappears, the extrusion force applied on the spring 13 disappears, and the spring 13 can eject the telescopic part 42 out of the insertion groove 5 to enable the telescopic part 42 to abut against the side wall of the gap of the bobbin case.

The implementation principle of the inner shuttle of the rotating shuttle with the positioning structure is as follows: in the bobbin case installation, extrude telescopic part 42 and make the whole width of locating piece 4 shorten, the bobbin case can be comparatively convenient installing in mounting groove 2 this moment, after the bobbin case installation is accomplished, loosen telescopic part 42 and make telescopic part 42 pop out from inserting groove 5, the breach lateral wall is pushed and connected respectively on telescopic part 42 and fixed part 41 on the bobbin case this moment, it is spacing to realize the circumference of bobbin case in mounting groove 2, make the bobbin case difficult circumferential direction that takes place in mounting groove 2, be convenient for the installation of follow-up other parts.

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 rotating shuttle inner shuttle with a positioning structure is characterized in that: the bobbin case installation support is characterized by comprising a main frame (1), wherein an installation groove (2) for installing a bobbin case is formed in the main frame (1), a central shaft (3) is arranged on the bottom surface of the installation groove (2), and a positioning block (4) used for abutting against the side wall of a bobbin case notch is arranged on the side wall of the installation groove (2).

2. The rotary inner shuttle with positioning structure as claimed in claim 1, wherein: the positioning block (4) comprises a fixing portion (41) and a telescopic portion (42), and an insertion groove (5) for inserting the telescopic portion (42) is formed in one side wall of the circumferential direction of the fixing portion (41).

3. The rotary hook inner according to claim 2, wherein: the telescopic part (42) is provided with a thread groove (6), the side wall of the insertion groove (5) is provided with a fixing hole (7) which can be aligned with the thread groove (6), and a fixing bolt (8) which can be in threaded connection with the thread groove (6) is inserted in the fixing hole (7).

4. The inner shuttle of claim 3, wherein: and a placing groove (9) for placing a screw head of the fixing bolt (8) is circumferentially arranged on the opening of the fixing hole (7) far away from the side wall of the inserting groove (5).

5. The rotary hook inner according to claim 2, wherein: the lateral wall of flexible portion (42) is provided with sliding block (10), sliding groove (11) that confession sliding block (10) slided along inserting groove (5) degree of depth direction are seted up to inserting groove (5) lateral wall.

6. The rotary hook inner according to claim 5, wherein: the opening of the sliding groove (11) is provided with a limiting block (12) which can be abutted against the sliding block (10).

7. The rotary hook inner according to claim 2, wherein: the bottom surface of the insertion groove (5) is connected with a spring (13), and one end, far away from the bottom surface of the insertion groove (5), of the spring (13) is connected to the telescopic part (42).

8. The rotary hook inner according to claim 7, wherein: the bottom surface of the insertion groove (5) is provided with a guide rod (14), the telescopic part (42) is provided with a guide groove (15) for the insertion of the guide rod (14), and the spring (13) is sleeved on the outer surface of the guide rod (14).