CN110670257A - Rotating shuttle - Google Patents
Rotating shuttle Download PDFInfo
- Publication number
- CN110670257A CN110670257A CN201911035425.5A CN201911035425A CN110670257A CN 110670257 A CN110670257 A CN 110670257A CN 201911035425 A CN201911035425 A CN 201911035425A CN 110670257 A CN110670257 A CN 110670257A
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- CN
- China
- Prior art keywords
- shuttle
- frame
- shuttle frame
- guide
- guide rail
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
- D05B57/10—Shuttles
- D05B57/14—Shuttles with rotary hooks
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention relates to the technical field of sewing machines, and discloses a rotating shuttle.A guide rail matched with a guide groove of an outer shuttle frame is arranged on the peripheral wall of the inner shuttle frame and comprises a guide bulge arranged on the inner shuttle frame and a wear-resistant layer coated on the guide bulge, the guide rail slides in the guide groove by arranging the wear-resistant layer on the guide bulge in the working process of the rotating shuttle, and the wear-resistant layer of the guide rail can avoid directly wearing the guide bulge on the inner shuttle frame, so that the service life of the rotating shuttle is ensured.
Description
Technical Field
The invention relates to the technical field of sewing machines, in particular to a rotating shuttle.
Background
The rotating shuttle is an important component of a sewing machine, and among sewing machines, a sewing machine sewing with a lock stitch is most common. Most of these machines employ a rotating shuttle which hooks the loop with its tip, expands the loop and guides the thread loop around the sleeve to form a lock stitch.
The rotating shuttle is generally disposed below a needle plate of a sewing machine, and includes an outer bobbin carriage fixed to a lower shaft to rotate in a circumferential direction as a needle moves up and down, and an inner bobbin carriage rotatably supporting the inner bobbin carriage and engaged with the outer bobbin carriage through a guide rail on an outer wall thereof. The guide rail of the existing inner shuttle frame is generally the same as the material of the inner shuttle frame in order to ensure the structural strength, and is made of stainless steel or iron, so that in the use process of the rotating shuttle, in the process that the outer shuttle frame rotates at a high speed along with the lower shaft relative to the inner shuttle frame, noise is easily generated due to a certain radial clearance between the guide rail and the outer shuttle frame, and in the continuous use process of the rotating shuttle, the guide rail is easily worn to influence the service life of the rotating shuttle.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing rotating shuttle is easy to generate noise in the using process, and the guide rail of the inner shuttle frame is easy to wear to influence the service life of the rotating shuttle.
In order to solve the technical problem, the invention provides a rotating shuttle, which comprises an outer shuttle frame and an inner shuttle frame arranged in the outer shuttle frame, wherein the inner shuttle frame is provided with an inner cavity for accommodating a thread coil, the inner wall of the outer shuttle frame is provided with a guide groove arranged along the circumferential direction of the outer shuttle frame, the outer circumferential wall of the inner shuttle frame is provided with a guide rail arranged along the circumferential direction of the inner shuttle frame and matched with the guide groove, and the guide rail comprises a guide bulge arranged on the inner shuttle frame and a soft wear-resistant layer coated on the guide bulge.
Further preferably, the wear-resistant layer is beryllium copper.
Further preferably, a sewage draining groove is formed in the guide rail and is formed in the wear-resistant layer.
Further preferably, the drainage groove is provided with a plurality of drainage grooves, and the drainage grooves are arranged at intervals and uniformly along the extending direction of the guide rail.
Further preferably, the inner cavity of the inner shuttle frame is provided as a coreless inner cavity.
Further preferably, the bottom of the inner shuttle frame is provided with a wire inclined plane for guiding the upper wire to slide out.
Further preferably, the bottom of the inner cavity of the inner shuttle frame is provided with a connecting piece used for detachably connecting a sewing machine shuttle sleeve.
Further preferably, the connecting member is a magnet.
Further preferably, the inner shuttle frame is provided with a positioning groove for limiting circumferential movement of the sewing machine shuttle sleeve.
Further preferably, the positioning groove is a V-shaped opening groove arranged at the upper part of the inner shuttle frame.
Compared with the prior art, the rotating shuttle provided by the embodiment of the invention has the beneficial effects that:
according to the rotating shuttle provided by the embodiment of the invention, the guide rail matched with the guide groove of the outer shuttle frame is arranged on the peripheral wall of the inner shuttle frame, the guide rail comprises the guide protrusion arranged on the inner shuttle frame and the wear-resistant layer coated on the guide protrusion, the guide rail slides in the guide groove in the working process of the rotating shuttle, and the wear-resistant layer of the guide rail can avoid directly wearing the guide protrusion on the inner shuttle frame, so that the service life of the rotating shuttle is ensured.
Drawings
Fig. 1 is a schematic structural view of a rotary hook according to an embodiment of the present invention;
fig. 2 is an exploded view of the rotary hook according to the embodiment of the present invention;
FIG. 3 is a schematic top view of an inner shuttle frame according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of an inner shuttle frame according to an embodiment of the present invention;
fig. 5 is a schematic structural view of the mating state of the rotating shuttle and the shuttle sleeve according to the embodiment of the present invention.
In the figure, 10, the outer shuttle frame; 20. an inner shuttle frame; 30. a shuttle sleeve; 101. a guide groove; 201. an inner cavity; 202. a guide rail; 202a, a guide projection; 202b, a wear layer; 203. a sewage draining groove; 204. A wire slope; 205. a connecting member; 206. positioning a groove; 207. leveling the surface; 301. and (5) positioning the blocks.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 5, a rotary hook according to a preferred embodiment of the present invention includes an outer hook frame 10 and an inner hook frame 20 disposed in the outer hook frame 10, the outer hook frame 10 is fixed to a lower shaft of a sewing machine and rotates counterclockwise with the lower shaft, the outer hook frame 10 rotatably supports the inner hook frame 20, the inner hook frame 20 has an inner cavity 201 for accommodating a thread loop (which supplies a bobbin thread during sewing), generally, the thread loop is installed in the inner cavity 201 through a hook sleeve 30, a guide groove 101 disposed along a circumferential direction of the inner hook frame 10 is disposed on an inner wall of the outer hook frame 10, a guide rail 202 disposed along the circumferential direction of the inner hook frame 20 and matched with the guide groove 101 is disposed on an outer circumferential wall of the inner hook frame 20, and the guide rail 202 includes a guide protrusion 202a disposed on the inner hook frame 20 and a soft wear-resistant layer 202b coated on the guide protrusion 202 a.
Specifically, a guide rail 202 matched with the guide groove 101 of the outer shuttle frame 10 is arranged on the outer peripheral wall of the inner shuttle frame 20, the guide rail 202 comprises a guide protrusion 202a arranged on the inner shuttle frame 20 and a wear-resistant layer 202b coated on the guide protrusion 202a, the outer shuttle frame 10 rotates to drive the guide rail 202 to slide in the guide groove 101 in the process of the rotating shuttle operation by arranging the wear-resistant layer 202b on the guide protrusion 202a, and the wear-resistant layer 202b of the guide rail 202 can prevent the guide groove 101 of the outer shuttle frame 10 from directly wearing the guide protrusion 202a on the inner shuttle frame 20, so that the service life of the rotating shuttle is ensured. In this embodiment, the wear-resistant layer 202b is preferably beryllium copper, which is a high-grade elastic material with the best performance in copper alloy, and has a series of excellent physical, chemical and mechanical properties, such as high strength, elasticity, hardness, fatigue strength, small elastic hysteresis, corrosion resistance, wear resistance, cold resistance, high conductivity, no magnetism, no spark generation due to impact, and the like, and has better wear resistance and noise reduction effects.
Because the sewing thread produces the friction and can appear fluffing phenomenon between the rotating shuttle in the use, perhaps because the adnexed rubbish of sewing thread itself, in the high-speed rotatory in-process of outer shuttle frame 10, the pompon on the sewing thread or other rubbish can drop on guide rail 202, lead to the rotating shuttle to appear the phenomenon of card line and influence its normal use in the use, on this basis, be equipped with blowdown groove 203 on guide rail 202 in this embodiment, blowdown groove 203 locates on wearing layer 202b, blowdown groove 203 can realize discharging the rubbish shuttle that produces smoothly in the rotating shuttle use, guarantee the normal use of rotating shuttle, improve sewing machine's efficiency. Preferably, the drainage groove 203 is provided with a plurality of drainage grooves 203, each drainage groove 203 is arranged at intervals and uniformly along the extending direction of the guide rail 202, generally, the depth of the drainage groove 203 on the wear-resistant layer 202b is about 0.2mm, exemplarily, the cross section of the guide rail 202 is rectangular, and the drainage groove 203 comprises a first section, a second section and a third section which are communicated with each other, wherein the first section is arranged on the upper end surface of the guide rail 202, the second section is arranged on the side portion of the guide rail 202, and the third section is arranged on the lower end surface of the guide rail 202.
The inner cavity 201 of the inner shuttle frame 20 in the embodiment is set to be the mandrel-free inner cavity 201, namely the thread coil is directly installed in the inner cavity 201, the central tap of the thread coil replaces the mandrel in the inner shuttle frame 20, because the mandrel does not rotate in the inner shuttle frame 20, in the sewing process, the phenomenon that the mandrel rotates continuously due to inertia after the rotating shuttle stops rotating can be prevented, the thread coil continuously supplies threads, the length of the thread head after sewing is increased, meanwhile, the phenomenon that the bird nest occurs during sewing to influence the attractiveness and integrity of sewing cloth can be avoided, in addition, the mandrel arrangement is omitted in the inner shuttle frame 20, the thread accommodating amount of the inner shuttle frame 20 is greatly increased, the thread changing times in the sewing process is reduced, the sewing quality is ensured, and the sewing work efficiency is improved.
During sewing, a needle drives an upper thread to penetrate through sewing material to form a thread loop, the side wall of a rotating shuttle is provided with a shuttle point, the shuttle point is hooked into the thread loop and then continuously rotates, one half of the thread loop slides out from the upper part of a shuttle sleeve 30, the other half of the thread loop slides out from the bottom of an inner shuttle frame 20 to sleeve a bottom thread in the middle, then the thread loop is tensioned to form a stitch on the sewing material, as the thread loop needs to slide out from the bottom of the inner shuttle frame 20, in order to reduce the resistance of the thread and ensure that the thread loop can smoothly slide out from the bottom of the inner shuttle frame 20, the bottom of the inner shuttle frame 20 is provided with a thread inclined plane 204 for guiding the upper thread to slide out, concretely, the bottom of the inner shuttle frame 20 comprises a flat plane 207 and a plurality of thread inclined planes 204 which are connected on the flat plane 207 and outwards diffused by the flat plane 207, and circular arc smooth transition is formed between the, compared with the existing structure that the bottom of the inner shuttle frame 20 is open and only a cross beam for installing the spindle is transversely arranged at the bottom, the bottom surface of the inner shuttle frame 20 in the embodiment is of a surface structure, the structure is strong and large, and the bottom of the inner shuttle frame 20 can be prevented from being broken due to insufficient strength.
In this embodiment, the bottom of the inner cavity 201 of the inner shuttle frame 20 is provided with a connecting piece 205 for detachably connecting the shuttle sleeve 30 of the sewing machine, and the shuttle sleeve 30 of the sewing machine is detachably connected with the inner shuttle frame 20 through the connecting piece 205 at the bottom of the inner shuttle frame 20, so that the thread changing operation is convenient. Specifically, the connecting element 205 is a magnet, and illustratively, a mounting groove is provided at the bottom of the inner shuttle frame 20, the magnet is provided in the mounting groove, the shuttle sleeve 30 can be smoothly placed and stabilized in the inner shuttle frame 20 under the magnetic attraction of the magnet, and in order to limit the circumferential rotation of the inner shuttle frame 20, the positioning groove 206 is provided on the inner shuttle frame 20, when in installation, the corresponding positioning block 301 on the shuttle sleeve 30 is clamped into the positioning groove 206 of the inner shuttle frame 20 for positioning, and at the same time, the shuttle sleeve 30 is smoothly installed in the inner shuttle frame 20 under the action of the magnet, the shuttle sleeve 30 is fixed by the magnetic attraction force of the bottom of the inner shuttle frame 20, and as a preferable mode, the positioning groove 206 is a "V" shaped opening groove provided at the upper part of the inner shuttle frame 20, and the size of the notch of the "V" shaped opening groove is larger than the size of the groove bottom of the groove, so that the.
In summary, the embodiment of the present invention provides a rotating shuttle, wherein a guide rail 202 matching with the guide groove 101 of the outer shuttle frame 10 is disposed on the outer peripheral wall of the inner shuttle frame 20, the guide rail 202 includes a guide protrusion 202a disposed on the inner shuttle frame 20 and a wear-resistant layer 202b coated on the guide protrusion 202a, by disposing the wear-resistant layer 202b on the guide protrusion 202a, in the process of the rotating shuttle operation, the guide rail 202 slides in the guide groove 101, and the wear-resistant layer 202b of the guide rail 202 can avoid directly wearing the guide protrusion 202a on the inner shuttle frame 20, thereby ensuring the service life of the rotating shuttle, and because the wear-resistant layer 202b is made of a soft material, in the process of the outer shuttle frame 10 rotating with the inner shuttle frame 20 at a high speed along with the lower shaft, the noise generated between the guide rail 202 and the outer shuttle frame 10 can be.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The rotating shuttle is characterized by comprising an outer shuttle frame and an inner shuttle frame arranged in the outer shuttle frame, wherein the inner shuttle frame is provided with an inner cavity used for accommodating a thread coil, the inner wall of the outer shuttle frame is provided with a guide groove arranged along the circumferential direction of the outer shuttle frame, the peripheral wall of the inner shuttle frame is provided with a guide rail arranged along the circumferential direction of the inner shuttle frame and matched with the guide groove, and the guide rail comprises a guide protrusion arranged on the inner shuttle frame and a soft wear-resistant layer coated on the guide protrusion.
2. The rotary hook according to claim 1, wherein said wear resistant layer is beryllium copper.
3. The rotary hook according to claim 2, wherein said guide rail is provided with a drainage groove, said drainage groove being provided on said wear layer.
4. The rotary hook according to claim 3, wherein said soil discharge groove is provided in plural numbers, and each of said soil discharge grooves is spaced and uniformly arranged along an extending direction of said guide rail.
5. The rotary shuttle of any one of claims 1 through 4, wherein the inner chamber of the inner shuttle frame is configured as a coreless inner chamber.
6. The rotary hook according to any one of claims 1 to 4, wherein a bottom of the inner hook frame is provided with a guide slope for guiding the upper thread to slip out.
7. The rotary shuttle according to any one of claims 1 to 4, wherein a bottom portion of the inner cavity of the inner shuttle frame is provided with a connecting member for detachably connecting a sewing machine shuttle sleeve.
8. The rotary hook according to claim 7, wherein said connecting member is a magnet.
9. The rotary shuttle of claim 8 wherein the inner frame defines a detent for limiting circumferential movement of a sewing machine sleeve.
10. The rotary hook according to claim 9, wherein said positioning groove is a V-shaped groove provided in an upper portion of said inner hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035425.5A CN110670257A (en) | 2019-10-28 | 2019-10-28 | Rotating shuttle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035425.5A CN110670257A (en) | 2019-10-28 | 2019-10-28 | Rotating shuttle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110670257A true CN110670257A (en) | 2020-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911035425.5A Pending CN110670257A (en) | 2019-10-28 | 2019-10-28 | Rotating shuttle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110670257A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112442803A (en) * | 2020-11-27 | 2021-03-05 | 林泽贤 | Rotating shuttle |
-
2019
- 2019-10-28 CN CN201911035425.5A patent/CN110670257A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112442803A (en) * | 2020-11-27 | 2021-03-05 | 林泽贤 | Rotating shuttle |
| CN112442803B (en) * | 2020-11-27 | 2022-08-02 | 中山市伊诺特智能科技有限公司 | Rotating shuttle |
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Effective date of registration: 20230524 Address after: 528400 No. 7 Card, Floor 2, Building A, Guangfeng Science and Technology Park, No. 1 Industrial Base, Nanlang Street, Zhongshan City, Guangdong Province Applicant after: Zhongshan yinuote Intelligent Technology Co.,Ltd. Address before: 515800 2, No. 8, Lane 12, Goulong north, Shaba village, Shanghua Town, Chenghai District, Shantou City, Guangdong Province Applicant before: Lin Zexian |