CN217948463U - Thread trimming mechanism and sewing machine thereof - Google Patents
Thread trimming mechanism and sewing machine thereof Download PDFInfo
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- CN217948463U CN217948463U CN202220552056.8U CN202220552056U CN217948463U CN 217948463 U CN217948463 U CN 217948463U CN 202220552056 U CN202220552056 U CN 202220552056U CN 217948463 U CN217948463 U CN 217948463U
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- trimming
- connecting rod
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- cam
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Abstract
The utility model relates to a sewing machine field discloses a trimming mechanism and sewing machine thereof, including driver (10) and trimming knife tackle (11) be connected with driver (10), driver (10) are step motor, install trimming cam (12) on step motor's the output shaft, are equipped with cam groove (121) on trimming cam (12), and cam groove (121) internal motion has trimming roller (13), and trimming roller (13) are connected with trimming knife tackle (11). The trimming knife group (11) comprises a positioning plate (111), a trimming connecting rod (112) and a knife bar (113), wherein the trimming connecting rod and the knife bar are both arranged on the positioning plate, the middle part of the trimming connecting rod is hinged on the positioning plate (111), one end of the trimming connecting rod is connected with the trimming roller (13), and the other end of the trimming connecting rod is hinged with the knife bar (113). This thread trimming mechanism adopts the cam groove as drive path to make thread trimming knife tackle trimming stability good. Meanwhile, the wire cutting mechanism is stable in transmission and easy to maintain, and is driven by a stepping motor, so that the noise is greatly reduced.
Description
Technical Field
The utility model relates to a sewing machine field especially relates to a thread trimming mechanism and sewing machine thereof.
Background
The flat seaming machine is mainly used for sewing necklines, cuffs and the like of various elastic fabrics such as knitted underwear, sports wear, T-shirts, bras, waist-binding skirt elastic bands and the like, can also be used for performing edge-curling sewing, and is suitable for the edge-curling sewing of the necklines and the cuffs of the underwear and the sports wear.
The thread trimming of the flat seaming machine in the sewing machine industry generally uses an electromagnet to drive the thread trimming, for example, the thread trimming device of the sewing machine with the application number of 201910586018.7 has the defects of complicated and fussy structure, high cost and difficult maintenance, and aims to solve the problems in the later stage.
SUMMERY OF THE UTILITY MODEL
The utility model provides a thread trimming mechanism and sewing machine to the shortcoming among the prior art.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
the utility model provides a trimming mechanism, includes driver and the trimming knife tackle be connected with the driver, and the driver is step motor, installs the trimming cam on step motor's the output shaft, is equipped with the cam groove on the trimming cam, and the motion has the trimming roller in the cam groove, and the trimming roller is connected with the trimming knife tackle. This thread trimming mechanism adopts the cam groove as drive path to make thread trimming knife tackle trimming stability good. Meanwhile, the wire cutting mechanism is stable in transmission and easy to maintain, and is driven by a stepping motor, so that the noise is greatly reduced.
Preferably, the thread cutting knife group comprises a positioning plate, a thread cutting connecting rod and a knife bar, wherein the thread cutting connecting rod and the knife bar are both arranged on the positioning plate, the middle part of the thread cutting connecting rod is hinged on the positioning plate, one end of the thread cutting connecting rod is connected with the thread cutting roller, and the other end of the thread cutting connecting rod is hinged with the knife bar.
Preferably, the upper end face of the positioning plate is provided with a transverse groove and a longitudinal groove, the transverse groove is communicated with the longitudinal groove, the trimming connecting rod is installed in the transverse groove, and the cutter bar is installed in the longitudinal groove. The transverse grooves and the longitudinal grooves have good motion stability in the trimming connecting rod and the guide rod.
Preferably, one end of the transverse groove penetrates through the side wall of the positioning plate and forms a notch, the width of the notch is smaller than the groove width of the inner end of the transverse groove, and the width of the notch is larger than the width of the trimming connecting rod.
Preferably, a base is installed at the inner end of the cutter bar, at least one positioning column is installed on the base, a spring is sleeved on each positioning column, and the other end of each spring is pressed against the side wall of the longitudinal groove.
A sewing machine includes a thread trimming mechanism.
The utility model discloses owing to adopted above technical scheme, have apparent technological effect:
this thread trimming mechanism adopts the cam groove as the drive path to make thread trimming knife tackle trimming stability good. Meanwhile, the wire cutting mechanism is stable in transmission and easy to maintain, and is driven by a stepping motor, so that the noise is greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the trimming cam of fig. 1.
Fig. 3 is a schematic structural view of the thread trimmer blade assembly of fig. 1.
The names of the parts designated by the numerical references in the above figures are as follows:
10-driver
11-trimming knife group, 111-positioning plate, 112-trimming connecting rod, 113-knife bar, 114-base, 115-positioning column, 116-spring, 1111-transverse groove, 1112-longitudinal groove and 1113-notch
12-trimming cam, 121-cam groove
13-trimming roller
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings 1-3 and examples.
Example 1
The utility model provides a trimming mechanism, includes driver 10 and the trimming knife tackle 11 of being connected with driver 10, and driver 10 is step motor, installs trimming cam 12 on step motor's the output shaft, is equipped with cam groove 121 on the trimming cam 12, and the motion has trimming roller 13 in the cam groove 121, and trimming roller 13 is connected with trimming knife tackle 11. The stepping motor drives the thread trimming cam 12 to rotate, and the thread trimming cam 12 drives the thread trimming cutter group 11 to perform thread trimming motion through the thread trimming roller 13. The cam groove 121 comprises a moving part and a holding part, and in order to realize that the trimming cam 12 rotates to trim the thread and also keep the thread stable, the trimming roller 13 is installed in the cam groove 121 of the trimming cam 12. This thread trimming mechanism adopts cam groove 121 as drive path to make thread trimming 11 of thread trimming sword group cut the line stability good. Meanwhile, the wire cutting mechanism is stable in transmission and easy to maintain, and is driven by a stepping motor, so that the noise is greatly reduced.
The thread cutting knife group 11 comprises a positioning plate 111, a thread cutting connecting rod 112 and a knife bar 113, wherein the thread cutting connecting rod 112 and the knife bar 113 are both installed on the positioning plate 111, the middle part of the thread cutting connecting rod 112 is hinged on the positioning plate 111, one end of the thread cutting connecting rod is connected with the thread cutting roller 13, and the other end of the thread cutting connecting rod is hinged with the knife bar 113. The stepping motor drives the trimming cam 12 to rotate, the trimming cam 12 rotates to drive the trimming connecting rod 112 to swing, and the trimming connecting rod 112 drives the cutter bar 113 to move back and forth, so that trimming of the cutter bar 113 is realized.
The upper end surface of the positioning plate 111 is provided with a transverse groove 1111 and a longitudinal groove 1112, the transverse groove 1111 is communicated with the longitudinal groove 1112, the extending direction of the transverse groove 1111 is perpendicular to the extending direction of the longitudinal groove 1112, the thread trimming link 112 is installed in the transverse groove 1111, and the cutter bar 113 is installed in the longitudinal groove 1112. The thread trimming connecting rod 112 and the cutter bar 113 have good swinging stability in the transverse groove 1111 and the longitudinal groove 1112.
One end of the transverse slot 1111 penetrates through the sidewall of the positioning plate 111 and forms a notch 1113, the width of the notch 1113 is smaller than the slot width of the inner end of the transverse slot 1111, and the width of the notch 1113 is larger than the width of the trimming link 112.
Example 2
The embodiment 2 has substantially the same features as the embodiment 1, except that the inner end of the tool bar 113 is provided with a base 114, the base 114 is provided with at least one positioning column 115, the number of the positioning columns 115 in this embodiment is two, the positioning columns 115 are integrally formed on the side wall of the base 114, the positioning columns 115 are sleeved with springs 116, and the other ends of the springs 116 are pressed against the side wall of the longitudinal grooves 1112.
Example 3
A sewing machine comprising the thread trimming mechanism of embodiment 1 or 2.
Claims (6)
1. A thread trimming mechanism comprises a driver (10) and a thread trimming cutter group (11) connected with the driver (10), and is characterized in that: the driver (10) is a stepping motor, a trimming cam (12) is installed on an output shaft of the stepping motor, a cam groove (121) is formed in the trimming cam (12), a trimming roller (13) moves in the cam groove (121), and the trimming roller (13) is connected with a trimming knife group (11).
2. A thread trimming mechanism according to claim 1, wherein: the trimming knife group (11) comprises a positioning plate (111), a trimming connecting rod (112) and a knife bar (113), the trimming connecting rod (112) and the knife bar (113) are both installed on the positioning plate (111), the middle part of the trimming connecting rod (112) is hinged on the positioning plate (111), one end of the trimming connecting rod is connected with the trimming roller (13), and the other end of the trimming connecting rod is hinged with the knife bar (113).
3. A thread trimming mechanism according to claim 1, wherein: the upper end surface of the positioning plate (111) is provided with a transverse groove (1111) and a longitudinal groove (1112), the transverse groove (1111) is communicated with the longitudinal groove (1112), the wire cutting connecting rod (112) is arranged in the transverse groove (1111), and the cutter bar (113) is arranged in the longitudinal groove (1112).
4. A thread trimming mechanism according to claim 3, wherein: one end of the transverse groove (1111) penetrates through the side wall of the positioning plate (111) to form a notch (1113), the width of the notch (1113) is smaller than the groove width of the inner end of the transverse groove (1111), and the width of the notch (1113) is larger than the width of the trimming connecting rod (112).
5. A thread trimming mechanism according to claim 3, wherein: the inner end part of the cutter bar (113) is provided with a base (114), the base (114) is provided with at least one positioning column (115), the positioning column (115) is sleeved with a spring (116), and the other end of the spring (116) is pressed against the side wall of the longitudinal groove (1112).
6. A sewing machine characterized by: comprising a thread trimming mechanism according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220552056.8U CN217948463U (en) | 2022-03-14 | 2022-03-14 | Thread trimming mechanism and sewing machine thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220552056.8U CN217948463U (en) | 2022-03-14 | 2022-03-14 | Thread trimming mechanism and sewing machine thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217948463U true CN217948463U (en) | 2022-12-02 |
Family
ID=84210051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220552056.8U Active CN217948463U (en) | 2022-03-14 | 2022-03-14 | Thread trimming mechanism and sewing machine thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217948463U (en) |
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2022
- 2022-03-14 CN CN202220552056.8U patent/CN217948463U/en active Active
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