CN211420510U - Rotary needle rod thread supply mechanism of sewing machine - Google Patents
Rotary needle rod thread supply mechanism of sewing machine Download PDFInfo
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- CN211420510U CN211420510U CN201922264009.4U CN201922264009U CN211420510U CN 211420510 U CN211420510 U CN 211420510U CN 201922264009 U CN201922264009 U CN 201922264009U CN 211420510 U CN211420510 U CN 211420510U
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- sewing machine
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Abstract
The utility model discloses a thread feeding mechanism for a rotary needle bar of a sewing machine, which comprises a rotary needle bar arranged on a sewing machine head, wherein a rotatable thread stand and a fixedly installed driving motor are arranged on the sewing machine head; the driving motor drives the rotary needle rod to rotate through the first synchronous belt, and the driving motor drives the wire rack to synchronously rotate through the second synchronous belt. The utility model discloses when the rotatory needle bar of driving motor drive is rotatory, control the line frame rotation synchronously to eliminate the suture because the rotatory torsion that comes of needle bar, make the confession line more smooth and easy, line tension control is more stable, improves the sewing quality of rotatory needle bar.
Description
Technical Field
The utility model relates to a sewing machine, in particular to a rotary needle bar thread supply mechanism of a sewing machine.
Background
The traditional sewing mechanism generally comprises an upper machine shell and a lower machine shell, an upper shaft motor and a needle bar mechanism which are arranged on the upper machine shell, an upper shaft which is arranged in the upper machine shell and is respectively in transmission connection with the upper shaft motor and the needle bar mechanism, a lower shaft motor and a shuttle bed mechanism which are arranged on the lower machine shell, and a lower shaft which is arranged in the lower machine shell and is respectively in transmission connection with the lower shaft motor and the shuttle bed, wherein the upper shaft is driven by the upper shaft motor to rotate, the upper shaft drives the needle bar mechanism to move up and down so as to realize the up-and-down sewing action of a sewing needle, the lower shaft is driven by the lower shaft motor to rotate, the lower shaft drives the shuttle bed mechanism to move so as to be matched with the sewing needle to carry out sewing operation, and when the sewing mechanism is used for sewing, the needle bar can not realize the adaptive rotation according to the stitch, so that the needle bar is influenced by the push, the sewing direction of the sewing needle cannot be consistent with the stitch set to be sewn, and finally the sewn stitch has the defects of looseness, irregularity, non-uniformity and the like. Especially, when irregular stitches are sewn, the sewing direction of a sewing needle is difficult to keep consistent with the set stitches, so that the finally sewn stitches are very loose, irregular and uneven and cannot be completely matched with the set stitches to be sewn, the appearance attractiveness and the sewing quality of the product are seriously affected, the overall quality of the product is affected, and the qualified rate of the product is low.
The invention patent with the patent number 201510152517.7 discloses a synchronous rotating mechanism of a needle bar of a sewing machine, which comprises a needle bar arranged on an upper machine shell and used for inserting a sewing needle, and a needle bar motor driving the needle bar to rotate, wherein the upper end of the needle bar is connected with a rotating seat in a penetrating way, a first bearing for clamping the needle bar is arranged on the rotating seat, and the needle bar forms rolling friction with the first bearing when moving up and down; the rotating seat is fixedly connected with the needle bar upper sleeve, the needle bar upper sleeve is arranged on the upper shell through a second bearing set, and the rotating seat is in transmission connection with the needle bar motor. This patent technique utilizes needle bar synchronous revolution, improves sewing stitch seam quality, nevertheless in the course of the work as the big angular rotation back of needle bar, line frame (3) also can the rotation that does not stop to the confession line of needle bar, thereby it influences sewing quality to supply the line rotation to lead to winding, the uncontrollable problem of line tension.
Disclosure of Invention
The utility model aims to solve the technical problem that to above-mentioned prior art current situation, and provide a sewing machine's rotatory needle bar supplies line mechanism, eliminates the suture because of the rotatory problem that leads to inaccurate, the reunion of line tension control of needle bar.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a thread feeding mechanism for a rotary needle bar of a sewing machine comprises a rotary needle bar arranged on a sewing machine head, wherein a rotatable thread stand and a fixedly installed driving motor are arranged on the sewing machine head; the driving motor drives the rotary needle rod to rotate through the first synchronous belt, and the driving motor drives the wire rack to synchronously rotate through the second synchronous belt.
In order to optimize the technical proposal, the utility model discloses still include following modified technical proposal.
The upper end sleeve of above-mentioned rotatory needle bar is equipped with the synchronizing wheel base, and the synchronizing wheel base is installed the needle bar drive synchronizing wheel, and needle bar drive synchronizing wheel and first synchronous belt meshing.
The wire frame is provided with a rotating shaft, a wire frame driving synchronous wheel is fixedly arranged on the rotating shaft, and the wire frame driving synchronous wheel is meshed with the second synchronous belt.
A power output shaft of the driving motor is provided with a first synchronizing wheel and a second synchronizing wheel which are arranged side by side; the first synchronizing wheel is meshed with the first synchronizing belt; the second synchronous wheel is meshed with the second synchronous belt.
A thread passing cavity is formed in the rotating needle rod along the axis; the sewing machine head is fixed with a cover plate, the cover plate is provided with a thread passing hole, and the thread passing hole is positioned above the axis of the rotary needle rod.
The wire holder is provided with a wire barrel housing, and the top end of the wire barrel housing is provided with a wire outlet hole.
A wire passing frame is arranged above the wire outlet hole.
Compared with the prior art, the utility model discloses a rotatory needle bar supplies line mechanism, when the rotatory needle bar of driving motor drive is rotatory, control the line frame rotation synchronously to eliminate the suture because the rotatory torsion that comes of needle bar, make supply the line more smooth and easy, line tension control is more stable, improves the sewing quality of rotatory needle bar.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a schematic view of the internal structure of fig. 1.
Fig. 3 is a schematic view of a transmission structure of the driving motor.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
Fig. 1 to fig. 3 are schematic structural diagrams of the present invention.
Wherein the reference numerals are: the sewing machine comprises a sewing machine head 1, a cover plate 11, a thread passing hole 12, a rotary needle rod 2, a synchronous wheel base 21, a thread stand 3, a thread stand driving synchronous wheel 31, a thread barrel housing 32, a thread outlet hole 33, a thread passing stand 34, a driving motor 4, a first synchronous wheel 41, a second synchronous wheel 42, a first synchronous belt 5, a needle rod driving synchronous wheel 51 and a second synchronous belt 6.
A thread feeding mechanism for a rotary needle bar of a sewing machine comprises a rotary needle bar 2 arranged on a sewing machine head 1, a rotatable thread stand 3 arranged on the sewing machine head 1, and a driving motor 4 fixedly arranged on the sewing machine head. The driving motor 4 drives the rotary needle rod 2 to rotate through the first synchronous belt 5, and the driving motor 4 drives the thread stand 3 to synchronously rotate through the second synchronous belt 6.
The rotary needle bar 2 is in sliding fit with the sewing machine head 1 through the guide bearing 22, and can move up and down in the axial direction to perform sewing work.
The upper end of the rotary needle bar 2 is fitted with a synchronizing wheel base 21, and the synchronizing wheel base 21 is provided with a needle bar driving synchronizing wheel 51, and the needle bar driving synchronizing wheel 51 is engaged with the first synchronizing belt 5. The driving motor 4 controls the rotation angle of the rotary needle bar 2 through the first timing belt 5.
The wire frame 3 is provided with a rotating shaft, a wire frame driving synchronous wheel 31 is fixedly arranged on the rotating shaft, and the wire frame driving synchronous wheel 31 is meshed with the second synchronous belt 6. The driving motor 4 controls the rotation angle of the wire frame 3 through the second synchronous belt 6. The transmission ratio of the wire frame driving synchronizing wheel 31 is the same as that of the needle rod driving synchronizing wheel 51, and when the driving motor 4 works, the wire frame 3 and the rotating needle rod 2 can be ensured to synchronously rotate, so that the upper thread is prevented from rotating due to the rotation of the rotating needle rod 2.
The power output shaft of the driving motor 4 is provided with a first synchronizing wheel 41 and a second synchronizing wheel 42 which are arranged side by side; the first synchronizing wheel 41 is engaged with the first synchronizing belt 5; the second timing pulley 42 is engaged with the second timing belt 6.
The inside of the rotary needle rod 2 is provided with a thread passing cavity along the axis. The sewing machine head 1 is fixed with a cover plate 11, the cover plate 11 is provided with a thread passing hole 12, and the thread passing hole 12 is positioned above the axis of the rotary needle rod 2.
The bobbin 3 is provided with a bobbin case 32, and a wire outlet hole 33 is formed at the top end of the bobbin case 32. A wire passing frame 34 is arranged above the wire outlet hole 33.
While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention.
Claims (7)
1. The utility model provides a sewing machine's rotatory needle bar supplies line mechanism, is including locating rotatory needle bar (2) of sewing machine head (1), characterized by: a rotatable thread stand (3) and a fixedly installed driving motor (4) are arranged on the sewing machine head (1); driving motor (4) drive through first hold-in range (5) rotatory needle bar (2) rotate, driving motor (4) drive through second hold-in range (6) line frame (3) synchronous revolution.
2. The rotary needle bar thread feeding mechanism according to claim 1, wherein: the upper end cover of rotatory needle bar (2) is equipped with synchronizing wheel base (21), synchronizing wheel base (21) install needle bar drive synchronizing wheel (51), needle bar drive synchronizing wheel (51) mesh with first synchronous belt (5).
3. The rotary needle bar thread feeding mechanism according to claim 1, wherein: the wire frame (3) is provided with a rotating shaft, a wire frame driving synchronous wheel (31) is fixedly mounted on the rotating shaft, and the wire frame driving synchronous wheel (31) is meshed with the second synchronous belt (6).
4. The rotary needle bar thread feeding mechanism according to claim 1, wherein: a power output shaft of the driving motor (4) is provided with a first synchronous wheel (41) and a second synchronous wheel (42) which are arranged side by side; the first synchronizing wheel (41) is meshed with the first synchronizing belt (5); the second synchronous wheel (42) is meshed with the second synchronous belt (6).
5. The rotary needle bar thread feeding mechanism according to claim 1, wherein: a thread passing cavity is formed in the rotating needle rod (2) along the axis; the sewing machine head (1) is fixedly provided with a cover plate (11), the cover plate (11) is provided with a thread passing hole (12), and the thread passing hole (12) is positioned above the axis of the rotary needle rod (2).
6. The rotary needle bar thread feeding mechanism according to claim 1, wherein: the wire frame (3) is provided with a wire barrel housing (32), and the top end of the wire barrel housing (32) is provided with a wire outlet hole (33).
7. The rotary needle bar thread feeding mechanism according to claim 6, wherein: a wire passing frame (34) is arranged above the wire outlet hole (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922264009.4U CN211420510U (en) | 2019-12-17 | 2019-12-17 | Rotary needle rod thread supply mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922264009.4U CN211420510U (en) | 2019-12-17 | 2019-12-17 | Rotary needle rod thread supply mechanism of sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN211420510U true CN211420510U (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922264009.4U Active CN211420510U (en) | 2019-12-17 | 2019-12-17 | Rotary needle rod thread supply mechanism of sewing machine |
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| CN (1) | CN211420510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202100000647A1 (en) * | 2021-01-14 | 2022-07-14 | Sam Srl Unipersonale | STITCHING HEAD |
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2019
- 2019-12-17 CN CN201922264009.4U patent/CN211420510U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202100000647A1 (en) * | 2021-01-14 | 2022-07-14 | Sam Srl Unipersonale | STITCHING HEAD |
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Address after: 315100 Zhejiang city of Ningbo province Yinzhou District Jingu Road No. 219 Patentee after: Shupu Intelligent Technology Co.,Ltd. Address before: 315100 Zhejiang city of Ningbo province Yinzhou District Jingu Road No. 219 Patentee before: NINGBO SUPREME ELECTRONIC MACHINERY Inc. |