CN219364008U - Inner shuttle frame adjusting and positioning device and sewing machine - Google Patents

Abstract

The application provides an inner shuttle frame adjusting and positioning device, wherein an adjusting and positioning groove is formed in an inner shuttle frame, and the inner shuttle frame adjusting and positioning device is characterized by comprising a motor, a sliding block in threaded connection with an output shaft of the motor and a positioning hook connected with the sliding block, and the positioning hook is clamped with the adjusting and positioning groove; the sliding block can drive the inner shuttle frame to rotate around the axis of the inner shuttle frame under the drive of the motor. The application also provides a sewing machine comprising the adjusting and positioning device. The beneficial effect of this application lies in, need not to carry out too much change to current sewing machine structure, can perfect adaptation current rotating shuttle, through automatically controlled accurate circumferential position of adjusting interior shuttle frame, convenient to use is high-efficient.

Description

Inner shuttle frame adjusting and positioning device and sewing machine

Technical Field

The application relates to the technical field of sewing machines, in particular to an inner shuttle frame adjusting and positioning device and a sewing machine.

Background

The rotating shuttle is an important component part of a thread hooking mechanism of a sewing machine, and is formed by combining an outer shuttle frame 1 and an inner shuttle frame 2, wherein the inner shuttle frame 2 is arranged on the inner side of the outer shuttle frame 1 and is matched with a guide groove in the outer shuttle frame 1 through a guide rail on the outer wall of the inner shuttle frame. In the sewing process, when the needle 5 is lifted with thread to puncture the sewing material to form a thread loop, the shuttle point on the outer shuttle frame 1 hooks the thread loop on the side surface of the needle 5, and a lock stitch is formed by bypassing the bottom thread in the shuttle center of the inner shuttle frame 2, so that the aim of sewing is fulfilled.

In the prior art, an adjusting and positioning groove 21 is formed in the inner shuttle frame 2, a positioning hook is arranged on a frame of the sewing machine, and the circumferential position of the inner shuttle frame 2 is determined by the clamping of the positioning hook and the adjusting and positioning groove 21. Because the positioning hook and the frame are locked through the screw, every time the circumferential position of the inner shuttle frame 2 needs to be adjusted, the adjustment is troublesome when better sewing effect is realized, and therefore a new inner shuttle frame adjusting and positioning device needs to be arranged.

Disclosure of Invention

Aiming at the defects, the object of the application is to provide an inner shuttle frame adjusting and positioning device which can efficiently and conveniently determine the circumferential position of an inner shuttle frame.

The application provides an inner shuttle frame adjusting and positioning device, wherein an adjusting and positioning groove is formed in an inner shuttle frame, the adjusting and positioning device comprises a motor, a sliding block in threaded connection with an output shaft of the motor and a positioning hook connected with the sliding block, and the positioning hook is clamped with the adjusting and positioning groove; the sliding block can drive the inner shuttle frame to rotate around the axis of the inner shuttle frame under the drive of the motor.

Preferably, a limit groove is arranged in the shell of the sewing machine, a guide groove parallel to the extending direction of the limit groove is arranged in the sliding block, and the limit groove and the guide groove are in limit connection through screws sequentially sleeved with springs and washers.

Preferably, the device further comprises a connecting rod fixedly connected with the sliding block, and the positioning hook is arranged on the connecting rod.

Preferably, the motor further comprises a control system connected with the motor.

The application also provides a sewing machine comprising the adjusting and positioning device.

The beneficial effect of this application lies in, need not to carry out too much change to current sewing machine structure, can perfect adaptation current rotating shuttle, through automatically controlled accurate circumferential position of adjusting interior shuttle frame, convenient to use is high-efficient.

Drawings

FIG. 1 is a schematic illustration of the relative positions of a conventional rotating shuttle and needle;

FIG. 2 is a schematic diagram of the cooperation of a conventional rotating shuttle with the present adjusting and positioning device;

FIG. 3 is a schematic view of the structure of the adjusting and positioning device of the present application;

FIG. 4 is a schematic view of the mounting position of the adjusting and positioning device in the sewing machine.

Description of element numbers:

1. outer shuttle frame

2. Inner shuttle frame

21. Adjusting positioning groove

31. Motor with a motor housing

32. Output shaft

33. Sliding block

331. Guide groove

34. Screw

341. Spring

342. Gasket ring

35. Screw

36. Connecting rod

37. Positioning hook

4. Casing of machine

41. Limiting groove

5. Machine needle

Detailed Description

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present utility model and are not intended to be limiting.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

For convenience of description, as shown in fig. 1, in the following embodiment, the direction in which the axis of the inner bobbin holder 2 extends is defined as the left-right direction, the direction in which the needle 5 extends is defined as the up-down direction, and the directions perpendicular to the left-right direction and the up-down direction are defined as the front-back direction.

As shown in fig. 1 and 2, an adjusting and positioning groove 21 is formed on the outer edge of the inner bobbin holder 2. As shown in fig. 2 and 3, the inner bobbin bracket adjusting and positioning device provided by the application comprises a motor 31, a sliding block 33 in threaded connection with an output shaft 32 of the motor 31, and a positioning hook 37 connected with the sliding block 33, wherein the positioning hook 37 is clamped with an adjusting and positioning groove 21. Specifically, the output shaft 32 of the motor 31 is provided with threads, and the end of the slider 33 is provided with a threaded hole in threaded engagement with the output shaft 32. The motor 31 is preferably a servo motor, facilitating accurate adjustment of the rotation angle. When the motor 31 drives the output shaft 32 to rotate, the slider 33 can move linearly in the front-rear direction, and the positioning hook 37 drives the inner bobbin holder 2 to rotate around its own axis, changing the circumferential position of the inner bobbin holder 2. In a specific embodiment of the present application, the adjusting and positioning device further includes a control system connected with the motor 31, and a maintainer can accurately determine the rotation angle of the inner shuttle frame 2 through the control system to control the working parameters of the motor 31, so that the adjustment is more efficient and convenient.

As shown in fig. 4, in order to avoid deflection of the slider 33, a limit groove 41 is provided in the casing 4 of the sewing machine, the limit groove 41 has stoppers on the left and right sides, and the slot extends in the front-rear direction; the sliding block 33 is provided with a guide groove 331 parallel to the extending direction of the limiting groove 41, and the limiting groove 41 is in limiting connection with the guide groove 331 through a screw 34 sequentially sleeved with a spring 341 and a gasket 342. The slider 33 and the stopper groove 41 can be vertically pressed against each other by the pre-pressing spring 341, and the displacement of the slider 33 in the vertical direction can be restricted. At the same time, the stopper of the limit groove 41 restricts the displacement of the slider 33 in the left-right direction, allowing only the slider 33 to move in the front-rear direction.

As shown in fig. 2 and 3, the positioning hook 37 may be directly connected to the slider 33 or may be provided on the connecting rod 36, and then the connecting rod 36 is detachably connected to the slider 33 by the screw 35. The connecting rod 36 is preferably L-shaped, thereby freeing up space for the rotating shuttle to install, making the overall structure more compact.

The application also provides a sewing machine comprising the adjusting and positioning device.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims (5)

1. An inner shuttle frame adjusting and positioning device is provided with an adjusting and positioning groove, and is characterized by comprising a motor, a sliding block in threaded connection with an output shaft of the motor and a positioning hook connected with the sliding block, wherein the positioning hook is clamped with the adjusting and positioning groove; the sliding block can drive the inner shuttle frame to rotate around the axis of the inner shuttle frame under the drive of the motor.

2. The adjusting and positioning device according to claim 1, wherein a limit groove is arranged in a machine shell of the sewing machine, a guide groove parallel to the extending direction of the limit groove is arranged in the sliding block, and the limit groove and the guide groove are in limit connection through a screw sequentially sleeved with a spring and a gasket.

3. The adjustable positioning device of claim 1, further comprising a connecting rod securely connected to the slider, the positioning hook being disposed on the connecting rod.

4. The adjustable positioning apparatus according to claim 1, further comprising a control system coupled to the motor.

5. A sewing machine comprising an adjustment positioning device according to any one of claims 1-4.