阅读说明：本技术 缝纫机的旋梭装置 (Rotating shuttle device of sewing machine ) 是由 朱健 于 2019-11-29 设计创作，主要内容包括：本申请的目的是提供一种缝纫机的旋梭装置,其主要是由外梭、内梭等构成。其中,外梭具有与缝纫机的机针上下同步运动并与缝纫机的下轴一体旋转的梭尖；外梭的内腔壁和内梭的外周面之间形成轨道槽；外梭的内腔壁具有沿其周向开设的限位槽；内梭的外周面沿周向设有限位凸起；限位凸起的外周面沿其周向开设有两个以上的槽体,且各槽体沿限位凸起的不同位置分布。与现有技术相比,本申请能够降低卡线的频率。(The application aims to provide a rotating shuttle device of a sewing machine, which mainly comprises an outer shuttle, an inner shuttle and the like. Wherein the outer shuttle has a shuttle point which moves up and down synchronously with a needle of the sewing machine and rotates integrally with a lower shaft of the sewing machine; a track groove is formed between the inner cavity wall of the outer shuttle and the outer peripheral surface of the inner shuttle; the inner cavity wall of the outer shuttle is provided with a limit groove which is arranged along the circumferential direction of the inner cavity wall; the peripheral surface of the inner shuttle is provided with a limiting bulge along the circumferential direction; more than two groove bodies are arranged on the peripheral surface of the limiting bulge along the circumferential direction of the limiting bulge, and the groove bodies are distributed along different positions of the limiting bulge. Compared with the prior art, the frequency of card line can be reduced.)

1. A rotating shuttle device of a sewing machine, comprising: an outer shuttle and an inner shuttle, wherein the outer shuttle has a shuttle point which moves up and down synchronously with a needle of the sewing machine and rotates integrally with a lower shaft of the sewing machine; a track groove is formed between the inner cavity wall of the outer shuttle and the outer peripheral surface of the inner shuttle; the inner cavity wall of the outer shuttle is provided with a limit groove arranged along the circumferential direction of the inner cavity wall; the outer peripheral surface of the inner shuttle is provided with a limiting bulge along the circumferential direction; it is characterized in that the preparation method is characterized in that,

the peripheral surface of the limiting bulge is provided with a groove body along the circumferential direction;

the groove body penetrates through the lower end face of the limiting bulge from the upper end face of the limiting bulge;

the number of the groove bodies is more than two, and the groove bodies are distributed along different positions of the limiting bulges.

2. The rotating shuttle device of sewing machine according to claim 1, wherein the groove direction of the groove body is arranged at an included angle with the axial direction of the inner shuttle; the included angle is 30-60 degrees.

3. The rotary shuttle device of a sewing machine of claim 2, wherein the included angle is 45 degrees.

4. The rotating shuttle device of sewing machine according to claim 1, wherein each slot body takes the center of the inner shuttle as a central point, the distance between the outer peripheral surface of the position-limiting protrusion and the central point is a radius, and the slots are distributed equiangularly in the circumferential direction of the position-limiting protrusion, or equidistantly in the circumferential direction of the position-limiting protrusion, or distributed at increasing angles in the circumferential direction of the position-limiting protrusion.

5. The rotating shuttle device of sewing machine according to claim 4, characterized in that the depth of the groove body is 0.6-1 mm; the width of the groove body is 1-3 mm; the axial section of the groove body is in a parallelogram or rectangle shape.

6. The rotary shuttle device of a sewing machine according to claim 1, wherein the slot comprises: the first arc area, the second arc area that links to each other with first arc area. The first arc-shaped area and the second arc-shaped area are sequentially arranged along the rotating direction of the inner shuttle; the area of the first arc-shaped area is smaller than that of the second arc-shaped area; the curvature radius of the second arc-shaped area is gradually increased from one end connected with the first arc-shaped area to one end connected with the outer peripheral surface of the inner shuttle, and the curvature radius of the second arc-shaped area is unchanged.

7. The rotating shuttle device of sewing machine according to any one of claims 1 to 6, wherein a thread passing groove is formed in the circumferential direction of the outer circumferential surface of the inner shuttle; the inner shuttle is provided with a first half part and a second half part which are divided by taking the symmetrical axis of the thread passing groove as a dividing line; at least one of the first half part and the second half part is provided with the groove body; and the number of the groove bodies is any one of two, three, four, five and six.

8. The rotary shuttle device of a sewing machine according to claim 7, wherein the number of the slots is six; the first half part is divided into a first area with the line passing groove and a second area connected with the first area by a normal line perpendicular to the symmetry axis; one groove body is positioned in the first area, four groove bodies are positioned in the second area, and the rest groove bodies are positioned in the second half part; and the second zone has a trough located in the area connected or adjacent to the second half; and a groove body is arranged in the second half part and is positioned on the normal line.

9. The rotary shuttle device of a sewing machine according to any one of claims 1 to 8, wherein the radial sectional shape of the groove body is any one or a combination of a rectangle, an arc and a hook.

10. The rotary shuttle device of a sewing machine according to claim 9, wherein the radial sectional shape of the groove body located at the first region is a rectangle; the radial section of the groove body positioned in the second area is arc-shaped; the radial section of the groove body positioned on the second half part is in a hook shape;

wherein the hook shape includes: the first arc-shaped area and the second arc-shaped area are connected with the first arc-shaped area; the first arc-shaped area and the second arc-shaped area are sequentially arranged along the rotating direction of the inner shuttle; the area of the first arc-shaped area is smaller than that of the second arc-shaped area; the width of the first arc-shaped area is gradually reduced towards the direction deviating from the second arc-shaped area along the circumferential direction of the limiting bulge.

Technical Field

The invention relates to the field of sewing machines, in particular to a rotating shuttle device of a sewing machine.

Background

A rotating shuttle device, which is an important component in a sewing machine, is generally composed of an outer shuttle rotatable about a horizontal rotation axis, an inner shuttle rotatably supported by the outer shuttle, a bobbin case mounted on the inner shuttle, and the like.

In the existing rotating shuttle device, the large rotating shuttle and the small rotating shuttle are generally divided according to the stroke of the thread take-up lever and the size of the rotating shuttle, in practical use, the large rotating shuttle can adopt thin thread and also can adopt thick thread, and the small rotating shuttle can only be applied to the thin thread generally, so the industrial sewing machine adopts the large rotating shuttle to perform sewing weaving, however, in the prior art, particularly a computer sewing machine with three times of the large rotating shuttle has the following defects when in use:

1. when sewing, especially when the fineness is thin, the sewing thread is often clamped in the rotating shuttle, for example, when the shuttle thread formed by the strands with the specification of 300D × 3 and the like and the thinner shuttle thread are used, the thread clamping frequency is higher.

2. After the bottom thread of the rotary shuttle peg is replaced, the thread clamping frequency is higher when the sewing machine starts, so that the sewing machine cannot rotate easily, and the sewing machine stops working.

Therefore, how to provide a rotating shuttle device, which avoids the wire jamming is a problem to be solved urgently in the application.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, the present invention provides a rotary shuttle device for a sewing machine, which can reduce the frequency of thread jamming.

In order to solve the above technical problems, the present invention provides a rotating shuttle device of a sewing machine, comprising: an outer shuttle and an inner shuttle, wherein the outer shuttle has a shuttle point which moves up and down synchronously with a needle of the sewing machine and rotates integrally with a lower shaft of the sewing machine; a track groove is formed between the inner cavity wall of the outer shuttle and the outer peripheral surface of the inner shuttle; the inner cavity wall of the outer shuttle is provided with a limit groove arranged along the circumferential direction of the inner cavity wall; the outer peripheral surface of the inner shuttle is provided with a limiting bulge along the circumferential direction;

the peripheral surface of the limiting bulge is provided with a groove body along the circumferential direction;

the groove body penetrates through the lower end face of the limiting bulge from the upper end face of the limiting bulge;

the number of the groove bodies is more than two, and the groove bodies are distributed along different positions of the limiting bulges.

Further preferably, the groove direction of the groove body and the axial direction of the inner shuttle form an included angle; the included angle is 30-60 degrees.

Further preferably, the included angle is 45 degrees.

Preferably, each groove body takes the center of the inner shuttle as a central point, the distance between the peripheral surface of the limiting protrusion and the central point is a radius, and the groove bodies are distributed equiangularly along the circumferential direction of the limiting protrusion, or equidistantly along the circumferential direction of the limiting protrusion, or distributed at increasing angles along the circumferential direction of the limiting protrusion.

Further preferably, the depth of the groove body is 0.6-1 mm; the width of the groove body is 1-3 mm; the axial section of the groove body is in a parallelogram or rectangle shape; the axial section of the groove body is in a parallelogram or rectangle shape;

further preferably, the radial cross-sectional shape of the groove body is any one of a rectangle, an arc and a hook.

Further preferably, the groove body is an arc groove.

Further preferably, the tank body includes: the first arc area, the second arc area that links to each other with first arc area. The first arc-shaped area and the second arc-shaped area are sequentially arranged along the rotating direction of the inner shuttle; the area of the first arc-shaped area is smaller than that of the second arc-shaped area; the curvature radius of the second arc-shaped area is gradually increased from one end connected with the first arc-shaped area to one end connected with the outer peripheral surface of the inner shuttle, and the curvature radius of the second arc-shaped area is unchanged.

Further preferably, a thread passing groove is formed in the circumferential direction of the outer circumferential surface of the inner shuttle; the inner shuttle is provided with a first half part and a second half part which are divided by taking the symmetrical axis of the thread passing groove as a dividing line; at least one of the first half part and the second half part is provided with the groove body; and the number of the groove bodies is any one of two, three, four, five and six.

Further preferably, the number of the grooves is six; the first half part is divided into a first area with the line passing groove and a second area connected with the first area by a normal line perpendicular to the symmetry axis; one groove body is positioned in the first area, four groove bodies are positioned in the second area, and the rest groove bodies are positioned in the second half part; and the second zone has a trough located in the area connected or adjacent to the second half; and a groove body is arranged in the second half part and is positioned on the normal line.

Further preferably, the radial cross-sectional shape of the groove body is any one or a combination of a rectangle, an arc and a hook.

Further preferably, the radial cross-sectional shape of the groove body located in the first zone is rectangular; the radial section of the groove body positioned in the second area is arc-shaped; the radial section of the groove body positioned on the second half part is in a hook shape; wherein the hook shape includes: the first arc-shaped area and the second arc-shaped area are connected with the first arc-shaped area; the first arc-shaped area and the second arc-shaped area are sequentially arranged along the rotating direction of the inner shuttle; the area of the first arc-shaped area is smaller than that of the second arc-shaped area; the width of the first arc-shaped area is gradually reduced towards the direction deviating from the second arc-shaped area along the circumferential direction of the limiting bulge.

Further preferably, the method further comprises the following steps: a positioning hook mutually matched with the inner shuttle; the positioning hook is provided with a wire guide hole, and the shape of the wire guide hole is a waist-shaped hole.

Compared with the prior art, the frequency of the card line can be reduced.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1: working principle diagram of the rotating shuttle device in the first embodiment of the invention;

FIG. 2: an exploded view of the rotating shuttle device in the first embodiment of the present invention;

FIG. 3: the structure of the inner shuttle in the first embodiment of the invention is shown schematically;

FIG. 4: the side structure of the inner shuttle in the second embodiment of the invention is shown schematically;

FIG. 5: a partial enlarged view shown in a in fig. 4;

FIG. 6: a top view of the inner shuttle in a third embodiment of the present invention;

FIG. 7: a schematic side structure of the inner shuttle in the third embodiment of the invention;

FIG. 8: a top view of the inner shuttle in a fourth embodiment of the present invention;

FIG. 9: a schematic side structure of an inner shuttle in a fourth embodiment of the invention;

FIG. 10: a bottom view of the inner shuttle in the fifth embodiment of the present invention;

FIG. 11: a top view of the inner shuttle in a sixth embodiment of the present invention;

FIG. 12: a schematic side structure of an inner shuttle in a sixth embodiment of the invention;

FIG. 13: a top view of the inner shuttle in the seventh embodiment of the present invention;

FIG. 14: a schematic side structure of an inner shuttle in a seventh embodiment of the invention;

FIG. 15: the structure schematic diagram of the positioning hook in the eighth embodiment of the invention;

description of reference numerals: the outer shuttle 1, the limiting groove 11, the shuttle tip 13, the inner shuttle 2, the limiting bulge 21, the groove body 22, the rotating shaft 23, the driving rod 3, the needle 4, the positioning hook 5, the kidney-shaped hole 51, the lower shaft 7 and the needle plate 8; a first arc-shaped region 221; a second arc-shaped area 222, a first area 201, a second area 202, a third area 203, a fourth area 204, a trough body 22b, a first arc-shaped area 22b1, a second arc-shaped area 22b2, a first arc-shaped area 22c1, a second arc-shaped area 22c2 and a wire passing groove 25.

Detailed Description

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.