CN219410152U - Inner shuttle frame adjusting and positioning device and sewing machine - Google Patents

Abstract

The utility model provides an inner shuttle frame adjusting and positioning device, which is provided with an adjusting and positioning groove, wherein the adjusting and positioning device comprises a knob, a screw rod coaxially connected with the knob, a sliding block in threaded connection with the screw rod 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 knob. 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, can accurately adjust interior shuttle frame's circumference position through the cooperation of knob and scale, 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 utility model provides an inner shuttle frame adjusting and positioning device, which is provided with an adjusting and positioning groove, wherein the adjusting and positioning device comprises a knob, a screw rod coaxially connected with the knob, a sliding block in threaded connection with the screw rod 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 knob.

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 is in limit connection with the guide groove through a screw sleeved with a spring and a gasket.

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 knob is provided with a scale or a pointer.

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, can accurately adjust interior shuttle frame's circumference position through the cooperation of knob and scale, 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. Knob

311. Graduation scale

32. Screw rod

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 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 internal shuttle frame adjusting and positioning device provided by the application comprises a knob 31, a screw rod 32 coaxially connected with the knob 31, a sliding block 33 and a positioning hook 37 connected with the sliding block 33, wherein a threaded hole for being in threaded connection with the screw rod 32 is formed in the end part of the sliding block 33, and the positioning hook 37 is clamped with the adjusting and positioning groove 21. The maintenance personnel rotates the knob 31, the driving slide block 33 moves linearly along the front-back direction, the inner shuttle frame 2 is driven to rotate around the axis of the inner shuttle frame 2 through the positioning hook 37, and the circumferential position of the inner shuttle frame 2 is changed.

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 sleeved with a spring 341 and a gasket 342. The slider 33 and the limit groove 41 can be vertically pressed by the pre-pressing spring 341, and the displacement of the slider 33 in the vertical direction is limited; 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.

Preferably, as shown in fig. 2-4, the knob 31 is provided with a scale 311 along the circumferential direction thereof, the scale 311 can be designed and divided according to the machine needle model, and a number representing the machine needle model is marked on each of a plurality of scale lines at intervals. The maintenance personnel rotates the knob 31 according to the currently used machine needle model, so that the circumferential position of the inner shuttle frame 2 meets the requirement of the current machine needle model. The design basis of the graduation 311 is not limited, and a person skilled in the art may also design according to other sewing related variables such as the thickness of the sewing material.

Further, the knob 31 and the screw 32 are installed in the casing 4 of the sewing machine, a pointer is arranged on the casing 4, and a maintenance person aligns corresponding scale marks with the pointer when rotating the knob 31, so that adjustment is simpler, more convenient and more accurate. The scale can also be arranged on the shell by a person skilled in the art, and the pointer is arranged on the knob, so that the same technical effect can be achieved.

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. The inner shuttle frame adjusting and positioning device is characterized in that the adjusting and positioning device comprises a knob, a screw rod coaxially connected with the knob, a sliding block in threaded connection with the screw rod 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 knob.

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 is in limit connection with the guide groove through a screw 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 positioning device of claim 1, wherein the knob is provided with a scale or pointer.

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