CN215757932U - Take-up lever driving mechanism adaptive to rotary needle rod - Google Patents
Take-up lever driving mechanism adaptive to rotary needle rod Download PDFInfo
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- CN215757932U CN215757932U CN202120419072.5U CN202120419072U CN215757932U CN 215757932 U CN215757932 U CN 215757932U CN 202120419072 U CN202120419072 U CN 202120419072U CN 215757932 U CN215757932 U CN 215757932U
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Abstract
The utility model discloses a take-up lever driving mechanism adaptive to a rotary needle rod, which comprises a main shaft, wherein the front end of the main shaft is connected with a needle rod crank, and a connecting part of the needle rod crank is provided with a needle rod crankshaft capable of rotating; the root of the needle rod crankshaft is connected with a take-up lever through a first bearing; the middle part of the take-up lever is rotationally connected with one end of the take-up connecting rod, and the other end of the take-up connecting rod is rotationally connected with a fixed shaft positioned below the main shaft. According to the utility model, after the position of the fixed shaft is arranged below the main shaft, the action of the take-up lever is more suitable for conveying threads to the upper part of the cavity of the rotating needle rod, and the thread tension control quality is improved.
Description
Technical Field
The utility model relates to the field of industrial sewing machines, in particular to a take-up lever driving mechanism adaptive to a rotary needle rod.
Background
The utility model 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 rotary seat is fixedly connected with the upper sleeve of the needle rod, the upper sleeve of the needle rod is arranged on the upper shell through a fixed shaft group, and the rotary seat is in transmission connection with the motor of the needle rod. This patent technique utilizes needle bar synchronous revolution, improves sewing stitch seam quality, but rotatory needle bar adopts the cavity to cross the line structure, and the suture penetrates up to the eedle from the upper end of rotatory needle bar, and the unable adaptation line tension control of current take-up lever.
Disclosure of Invention
The utility model aims at the current state of the prior art and provides a take-up lever driving mechanism adaptive to a rotary needle rod, which optimizes a take-up structure and improves the tension control quality of a suture.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a take-up lever driving mechanism adaptive to a rotary needle rod comprises a main shaft, wherein the front end of the main shaft is connected with a needle rod crank, and a connecting part of the needle rod crank is provided with a needle rod crank capable of rotating; the root of the needle rod crankshaft is connected with a take-up lever through a first bearing; the middle part of the take-up lever is rotationally connected with one end of the take-up connecting rod, and the other end of the take-up connecting rod is rotationally connected with a fixed shaft positioned below the main shaft.
In order to optimize the technical scheme, the utility model also comprises the following improved technical scheme.
The front end of the needle rod crankshaft is rotatably connected with one end of a needle rod connecting rod, and the other end of the needle rod connecting rod is connected with a needle rod driving block which is vertically and slidably arranged in the guide groove.
The needle bar driving block is rotationally connected with the rotary needle bar through a shaft sleeve, and the upper side and the lower side of the bearing are respectively provided with a needle bar hoop.
Compared with the prior art, the take-up lever driving mechanism adaptive to the rotary needle rod has the advantages that after the position of the fixed shaft is arranged below the main shaft, the action of the take-up lever is more suitable for conveying threads to the upper part of the cavity of the rotary needle rod, and the thread tension control quality is improved.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a perspective view of another state of fig. 1.
Fig. 3 is a schematic view of the internal structure of fig. 1.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
Fig. 1 to 3 are schematic structural views of the present invention.
Wherein the reference numerals are: the needle bar comprises a main shaft 1, a needle bar crank 2, a needle bar crank 3, a first bearing 4, a thread take-up lever 5, a thread take-up connecting rod 6, a fixed shaft 61, a needle bar connecting rod 7, a needle bar driving block 8, a guide groove 81, a shaft sleeve 82, a rotary needle bar 9 and a needle bar hoop 91.
A take-up lever driving mechanism adaptive to a rotary needle rod comprises a main shaft 1, wherein the front end of the main shaft 1 is connected with a needle rod crank 2, and a connecting part of the needle rod crank 2 is provided with a needle rod crankshaft 3 capable of rotating.
The root of the needle bar crankshaft 3 is connected with a thread take-up lever 5 through a first bearing 4. The middle part of the thread take-up lever 5 is rotatably connected with one end of the thread take-up connecting rod 6, and the other end of the thread take-up connecting rod 6 is rotatably connected with a fixed shaft 61 positioned below the main shaft 1.
The rotary needle bar 9 can be rotatably arranged in the sewing machine head, and a suture thread penetrates through a small hole at the end part of the thread take-up lever 5, penetrates through an inner cavity opening at the top end of the rotary needle bar 9, penetrates out from the lower end of the inner cavity of the rotary needle bar 9 and penetrates through a machine needle. When the fixed shaft 61 is disposed below the main shaft 1, the operation of the thread take-up lever 5 is more suitable for feeding thread upward, and poor thread tension control is avoided.
The front end of the needle rod crankshaft 3 is rotatably connected with one end of a needle rod connecting rod 7, and the other end of the needle rod connecting rod 7 is connected with a needle rod driving block 8 which is vertically and slidably arranged in the guide groove 81. When the main shaft 1 drives the needle rod crank 2 to rotate, the connecting part of the needle rod crank 2 drives the needle rod crank 3 to rotate, thereby driving the needle rod driving block 8 to slide up and down in the guide groove 81.
The needle bar driving block 8 is rotatably connected with the rotary needle bar 9 through a shaft sleeve 82, and needle bar hoops 91 are respectively arranged on the upper side and the lower side of the bearing so as to drive the rotary needle bar 9 to move up and down for sewing.
While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by one skilled in the art without departing from the scope of the utility model.
Claims (3)
1. The utility model provides a take-up lever actuating mechanism of rotatory needle bar of adaptation, includes main shaft (1), characterized by: the front end of the main shaft (1) is connected with a needle rod crank (2), and the connecting part of the needle rod crank (2) is provided with a needle rod crank (3) capable of rotating; the root of the needle rod crankshaft (3) is connected with a take-up lever (5) through a first bearing (4); the middle part of the thread take-up lever (5) is rotatably connected with one end of the thread take-up connecting rod (6), and the other end of the thread take-up connecting rod (6) is rotatably connected with a fixed shaft (61) positioned below the main shaft (1).
2. The thread take-up lever drive mechanism according to claim 1, wherein: the front end of the needle rod crankshaft (3) is rotatably connected with one end of a needle rod connecting rod (7), and the other end of the needle rod connecting rod (7) is connected with a needle rod driving block (8) which is vertically and slidably arranged in the guide groove (81).
3. The thread take-up lever drive mechanism according to claim 2, wherein: the needle bar driving block (8) is rotatably connected with the rotary needle bar (9) through a shaft sleeve (82), and the upper side and the lower side of the bearing are respectively provided with a needle bar hoop (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120419072.5U CN215757932U (en) | 2021-02-26 | 2021-02-26 | Take-up lever driving mechanism adaptive to rotary needle rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120419072.5U CN215757932U (en) | 2021-02-26 | 2021-02-26 | Take-up lever driving mechanism adaptive to rotary needle rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215757932U true CN215757932U (en) | 2022-02-08 |
Family
ID=80093532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120419072.5U Active CN215757932U (en) | 2021-02-26 | 2021-02-26 | Take-up lever driving mechanism adaptive to rotary needle rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215757932U (en) |
-
2021
- 2021-02-26 CN CN202120419072.5U patent/CN215757932U/en active Active
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