CN111088610B - Rotating shuttle angle adjusting mechanism and sewing machine - Google Patents
Rotating shuttle angle adjusting mechanism and sewing machine Download PDFInfo
- Publication number
- CN111088610B CN111088610B CN201811242118.XA CN201811242118A CN111088610B CN 111088610 B CN111088610 B CN 111088610B CN 201811242118 A CN201811242118 A CN 201811242118A CN 111088610 B CN111088610 B CN 111088610B
- Authority
- CN
- China
- Prior art keywords
- transmission
- shaft
- arm
- gear
- rotating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/02—Mechanical drives
Abstract
The invention provides a rotating shuttle angle adjusting mechanism which comprises a main motor, an upper shaft, a lower shaft, a rotating shuttle, an adjusting driving source, a transmission shaft, a first transmission mechanism connected between the upper shaft and the transmission shaft, and a second transmission mechanism connected between the transmission shaft and the lower shaft, wherein the second transmission mechanism is internally provided with a rotatable rotating arm and a transmission assembly connected between the rotating arm and the lower shaft, and the adjusting driving source is connected with the rotating arm through a third transmission mechanism; when the main motor rotates and the adjusting driving source does not act, the upper shaft drives the transmission shaft to rotate through the first transmission mechanism, and the transmission shaft drives the lower shaft and the rotating shuttle to rotate through the second transmission mechanism; when the adjusting driving source acts and the main motor stops rotating, the adjusting driving source drives the rotating arm to rotate through the third transmission mechanism, and the rotating arm drives the lower shaft and the rotating shuttle to rotate through the transmission assembly. The angle of the rotating shuttle in the circumferential direction can be automatically adjusted by adjusting the driving source so as to adjust the matching of the needle and the shuttle, and the matching adjustment of the needle and the shuttle is quick, flexible and efficient.
Description
Technical Field
The invention relates to a rotating shuttle angle adjusting mechanism.
The invention also relates to a sewing machine comprising the rotating shuttle angle adjusting mechanism.
Background
Currently, in the actual use of sewing machines, in order to adapt to different fabrics and needles, the needle-shuttle fit needs to be readjusted, which involves the problem of the reassembly of the rotating shuttle on the lower shaft, namely: the relative position relation between the rotating shuttle and the needle is changed by manually adjusting the angle of the rotating shuttle in the circumferential direction so as to adjust the matching of the needle and the shuttle. For some large garment factories, the above-mentioned commissioning work of needle-shuttle cooperation by hand consumes a lot of time in the face of switching of batches of garment materials and models of machine needles, resulting in very low commissioning efficiency. Especially for future personalized production modes, there is a big contradiction between frequent manual needle and shuttle coordination switching and inefficient debugging, which greatly affects production efficiency and order delivery.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a rotating shuttle angle adjusting mechanism capable of automatically adjusting a rotating shuttle angle.
In order to achieve the above purpose, the invention provides a rotating shuttle angle adjusting mechanism, which comprises a main motor, an upper shaft driven by the main motor to rotate, a lower shaft parallel to the upper shaft, a rotating shuttle fixed on the lower shaft, an adjusting driving source, a transmission shaft parallel to the lower shaft, a first transmission mechanism connected between the upper shaft and the transmission shaft, and a second transmission mechanism connected between the transmission shaft and the lower shaft, wherein the second transmission mechanism is internally provided with a rotatable rotating arm and a transmission assembly connected between the rotating arm and the lower shaft, and the adjusting driving source is connected with the rotating arm through a third transmission mechanism; when the main motor rotates and the adjusting driving source does not act, the upper shaft drives the transmission shaft to rotate through the first transmission mechanism, and the transmission shaft drives the lower shaft and the rotating shuttle to rotate through the second transmission mechanism; when the adjusting driving source acts and the main motor stops rotating, the adjusting driving source drives the rotating arm to rotate through the third transmission mechanism, and the rotating arm drives the lower shaft and the rotating shuttle to rotate through the transmission assembly.
Furthermore, first drive mechanism is including fixing the last synchronizing wheel in upper shaft periphery, fixing lower synchronizing wheel and the hold-in range in the transmission shaft periphery, go up the synchronizing wheel and be connected through the hold-in range with lower synchronizing wheel.
Further, the lower shaft and the transmission shaft are arranged coaxially; the second transmission mechanism further comprises a gear shaft which is rotatably installed in the swing arm and is perpendicular to the transmission shaft, a first transmission gear fixed on the gear shaft, a second transmission gear fixed on the transmission shaft and a third transmission gear fixed on the lower shaft, the second transmission gear and the third transmission gear are arranged just opposite to each other, are respectively arranged on two sides of the first transmission gear and are meshed with the first transmission gear, and the gear shaft, the first transmission gear and the third transmission gear form the transmission assembly.
Further, the radial arm is rotatably arranged on the periphery of the transmission shaft through a bearing; the gear shaft is rotatably mounted in the radial arm through a bearing.
Furthermore, the spiral arm comprises an arm main body part connected with the third transmission mechanism and two arm mounting plate parts extending from the arm main body part and arranged oppositely, and the gear shaft is mounted in each arm mounting plate part.
Further, the third transmission mechanism comprises a worm driven to rotate by the adjusting driving source and a worm wheel in transmission fit with the worm, and the worm wheel is fixed on the periphery of the spiral arm.
Further, the adjustment drive source is an adjustment motor.
The invention also provides a sewing machine, and the rotating shuttle angle adjusting mechanism is arranged in the sewing machine.
As described above, the rotating shuttle angle adjusting mechanism and the sewing machine according to the present invention have the following advantageous effects:
in this application, can automatically regulated rotating shuttle at the angle of circumferencial direction through adjusting the driving source to the cooperation of adjustment needle shuttle, and make needle shuttle complex adjustment very swift, nimble, and debug accurate, efficient, can effectively guarantee clothing factory's production efficiency and order delivery.
Drawings
Fig. 1 is a schematic structural view of a rotating shuttle angle adjusting mechanism according to the present application.
Fig. 2 is a schematic structural diagram of a differential gear train assembly according to the present application.
Fig. 3 is a cross-sectional view of fig. 2.
Description of the element reference numerals
1 Main electric machine
2 upper shaft
3 lower shaft
4 rotating shuttle
5 adjusting the driving source
6 drive shaft
7 first transmission mechanism
71 upper synchronizing wheel
72 lower synchronizing wheel
73 synchronous belt
8 second transmission mechanism
81 spiral arm
811 arm body portion
812 arm mounting plate part
82 gear shaft
83 first transmission gear
84 second transfer gear
85 third transmission gear
9 third transmission mechanism
91 worm
92 worm wheel
10 bearing
11 shaft coupling
12-thorn cloth take-up mechanism
13 needle bar
14 machine needle
15 hand wheel
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications.
The application provides a sewing machine, in particular to a rotating shuttle angle adjusting mechanism in the sewing machine. For convenience of description, in the following examples, the directions are defined as follows: the axial direction of an upper shaft in the sewing machine is defined as the left-right direction, and the direction of the upper shaft facing to the machine head is the left direction and the direction of the upper shaft facing to the machine tail is the right direction, so the left-right direction is the length direction of the sewing machine at the same time; defining a width direction of the sewing machine as a front-rear direction; the height direction of the sewing machine is defined as the up-down direction.
As shown in fig. 1, the rotating shuttle angle adjusting mechanism provided by the present application includes a main motor 1, an upper shaft 2 driven to rotate by the main motor 1, a lower shaft 3 parallel to the upper shaft 2, a rotating shuttle 4 fixed at the left end of the lower shaft 3, an adjusting drive source 5, a transmission shaft 6 parallel to the lower shaft 3, a first transmission mechanism 7 connected between the upper shaft 2 and the transmission shaft 6, and a second transmission mechanism 8 connected between the transmission shaft 6 and the lower shaft 3; the output end of the main motor 1 is connected with the right end of the upper shaft 2 through a coupler 11; the second transmission mechanism 8 has a rotatable radial arm 81 and a transmission component connected between the radial arm 81 and the lower shaft 3, and the adjusting drive source 5 is connected with the radial arm 81 through a third transmission mechanism 9 to drive the radial arm 81 to rotate. Further, a needle raising and thread taking-up mechanism 12 is attached to the left end of the upper shaft 2, and the needle raising and thread taking-up mechanism 12 includes a needle bar 13 capable of reciprocating up and down and a needle 14 attached to the lower end of the needle bar 13. In the rotating shuttle angle adjusting mechanism, when the main motor 1 rotates and the adjusting driving source 5 does not act, the main motor 1 drives the upper shaft 2 to rotate, the upper shaft 2 drives the transmission shaft 6 to rotate through the first transmission mechanism 7, and the transmission shaft 6 drives the lower shaft 3 and the rotating shuttle 4 to rotate through the second transmission mechanism 8; meanwhile, the upper shaft 2 drives the cloth-pricking and thread-picking mechanism 12 to act, so that the sewing actions of cloth pricking and thread picking are completed, and the normal sewing work of the sewing machine is realized by forming a stitch on the cloth through the mutual matching of the machine needle 14 and the rotating shuttle 4. When the needle shuttle needs to be adjusted to be matched, the main motor 1 stops rotating, at the moment, the upper shaft 2 does not rotate, the needle rod 13 and the needle 14 stop acting, and the sewing machine stops sewing; meanwhile, the adjusting driving source 5 is driven to act under the action of a control program of an electric control module in the sewing machine, the adjusting driving source 5 drives a rotating arm 81 in a second transmission mechanism 8 to rotate through a third transmission mechanism 9, the rotating arm 81 drives a lower shaft 3 and a rotating shuttle 4 to rotate through a transmission component in the second transmission mechanism 8, the angle of the rotating shuttle 4 in the circumferential direction is automatically adjusted, and the needle shuttle is adjusted to be matched and is the installation angle of the rotating shuttle 4 in the circumferential direction, so that the adjustment of the needle shuttle matching is very quick and flexible, the debugging is accurate, the efficiency is high, the production efficiency and the order delivery of a clothing factory can be effectively guaranteed, and the adjusting driving device is very suitable for the condition that the clothing factory needs to change the matching of the sewing machine needles 14 in a large batch. In this embodiment, the adjustment driving source 5 is an adjustment motor and is fixed to the sewing machine housing. In addition, a hand wheel 15 is further arranged at the right end of the main motor 1, the hand wheel 15 is connected with a motor shaft of the main motor 1, and the upper shaft 2 can be driven to rotate by manually rotating the hand wheel 15.
As shown in fig. 1 to 3, the first transmission mechanism 7 includes an upper synchronizing wheel 71 fixed to the outer periphery of the upper shaft 2, a lower synchronizing wheel 72 fixed to the outer periphery of the transmission shaft 6, and a timing belt 73, the upper synchronizing wheel 71 and the lower synchronizing wheel 72 are connected by the timing belt 73, and the transmission shaft 6 constitutes a wheel shaft of the lower synchronizing wheel 72. The lower shaft 3 and the transmission shaft 6 are coaxially arranged, and the lower shaft 3 is positioned on the left side of the transmission shaft 6. The radial arm 81 is rotatably mounted on the outer periphery of the drive shaft 6 through a bearing 10. The second transmission mechanism 8 further comprises a gear shaft 82, the outer end of which is rotatably arranged in the radial arm 81 through a bearing 10, a first transmission gear 83 fixed at the inner end of the gear shaft 82, a second transmission gear 84 fixed at the left end of the transmission shaft 6 and a third transmission gear 85 fixed at the right end of the lower shaft 3; the gear shaft 82 is perpendicular to the transmission shaft 6; the second transmission gear 84 and the third transmission gear 85 are disposed right opposite to each other in the left-right direction, and the second transmission gear 84 and the third transmission gear 85 are disposed on the right side and the left side of the first transmission gear 83, respectively, and are both meshed with the first transmission gear 83. The third transmission mechanism 9 comprises a worm 91 driven by the adjusting drive source 5 to rotate, and a worm wheel 92 in transmission fit with the worm 91, wherein the worm wheel 92 is fixed on the periphery of the radial arm 81; in other embodiments, the third transmission mechanism 9 may also be in the form of a gear transmission or the like. The preferred structure of the radial arm 81 is: the radial arm 81 includes an arm main body portion 811 fixed to the worm wheel 92 of the third transmission mechanism 9, and two arm mounting plate portions 812 extending from the arm main body portion 811 and disposed opposite to each other, the gear shaft 82 being mounted in each arm mounting plate portion 812, the arm main body portion 811 being assembled with the transmission shaft 6 via the bearing 10; in other embodiments, radial arm 81 may be mounted in the inner bore of the sewing machine housing by bearing 10.
In the rotating shuttle angle adjusting mechanism, the rotating arm 81, the first transmission gear 83, the second transmission gear 84 and the third transmission gear 85 form a group of differential gear train components, the transmission shaft 6 and the rotating arm 81 form the input end of the differential gear train components, and the lower shaft 3 forms the output end of the differential gear train components; the transmission shaft 6 receives the rotation speed and the torque from the main motor 1, the rotating arm 81 receives the rotation speed and the torque from the adjusting motor, and the rotation speed of the rotating arm 81 and the rotation speed of the second transmission gear 84 fixed at the left end of the transmission shaft 6 can control the rotation speed of the third transmission gear 85 and the lower shaft 3 without mutual influence.
The operating principle of the rotating shuttle angle adjusting mechanism is as follows:
when the sewing machine sews normally, the main motor 1 rotates and the adjusting drive source 5 does not rotate; therefore, the worm 91, the worm wheel 92 and the swing arm 81 are not rotated and are in a stationary state by the adjusting drive source 5; under the action of the main motor 1, the upper shaft 2 rotates, the upper shaft 2 drives the transmission shaft 6 to rotate through the upper synchronizing wheel 71, the synchronous belt 73 and the lower synchronizing wheel 72, the transmission shaft 6 drives the second transmission gear 84 to rotate, the second transmission gear 84 drives the third transmission gear 85 to rotate through the first transmission gear 83, and then the lower shaft 3 and the rotating shuttle 4 are driven to rotate.
When the installation angle of the rotating shuttle 4 needs to be adjusted to be suitable for different fabrics, the main motor 1 does not rotate and the driving source 5 is adjusted to rotate; therefore, the upper shaft 2 and the cloth pricking and thread taking-up mechanism 12 do not act, and the transmission shaft 6 and the second transmission gear 84 do not rotate; the adjusting driving source 5 drives the worm 91 to rotate, the worm 91 drives the worm wheel 92 to rotate, the rotating arm 81 rotates along with the worm wheel 92, under the action of the first transmission gear 83 and the stationary second transmission gear 84, the rotating arm 81 drives the third transmission gear 85 to rotate through the first transmission gear 83, and then the lower shaft 3 and the rotating shuttle 4 are driven to rotate, so that the position of the rotating shuttle 4 is quickly finely adjusted; at this time, the first transmission gear 83 is a planetary gear, and the third transmission gear 85 is a sun gear.
Therefore, the differential gear train assembly in the present application can realize that both the main motor 1 and the adjusting drive source 5 can control the output rotation angle of the differential gear train assembly independently without affecting each other.
Further, the adjusting drive source 5 is connected with an electric control module of the sewing machine; in a control program of the electric control module, different mounting angles of the rotating shuttles 4 corresponding to different fabrics are preset, namely different output angles of the corresponding adjusting drive source 5 are determined; when the fabric needs to be replaced, the fabric to be sewn in the operation interface of the sewing machine is selected, the positions of the upper shaft 2 and the needle 14 are kept fixed, the electric control module controls the adjusting driving source 5 to rotate to the preset position corresponding to the selected fabric, the quick change of the installation angle of the rotating shuttle 4 can be realized, and the operation is very quick and convenient.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a rotating shuttle angle adjustment mechanism, includes main motor (1), by main motor (1) drive pivoted upper shaft (2), with lower shaft (3) that upper shaft (2) are parallel to and be fixed in rotating shuttle (4) of lower shaft (3), its characterized in that: the transmission mechanism comprises an adjusting drive source (5), a transmission shaft (6) coaxially arranged with a lower shaft (3), a first transmission mechanism (7) connected between an upper shaft (2) and the transmission shaft (6), and a second transmission mechanism (8) connected between the transmission shaft (6) and the lower shaft (3), wherein the second transmission mechanism (8) is internally provided with a rotary arm (81), a gear shaft (82) rotatably arranged in the rotary arm (81) and vertical to the transmission shaft (6), a first transmission gear (83) fixed on the gear shaft (82), a second transmission gear (84) fixed on the transmission shaft (6), and a third transmission gear (85) fixed on the lower shaft (3), the second transmission gear (84) and the third transmission gear (85) are just arranged, are respectively arranged at two sides of the first transmission gear (83), and are both meshed with the first transmission gear (83), the gear shaft (82), the first transmission gear (83) and the third transmission gear (85) form a transmission assembly connected between the swing arm (81) and the lower shaft (3), and the adjusting driving source (5) is connected with the swing arm (81) through the third transmission mechanism (9); when the main motor (1) rotates and the adjusting driving source (5) does not act, the upper shaft (2) drives the transmission shaft (6) to rotate through the first transmission mechanism (7), and the transmission shaft (6) drives the lower shaft (3) and the rotating shuttle (4) to rotate through the second transmission mechanism (8); when the adjusting driving source (5) acts and the main motor (1) stops rotating, the adjusting driving source (5) drives the rotating arm (81) to rotate through the third transmission mechanism (9), and the rotating arm (81) drives the lower shaft (3) and the rotating shuttle (4) to rotate through the transmission assembly.
2. The rotary shuttle angle adjustment mechanism of claim 1, wherein: the first transmission mechanism (7) comprises an upper synchronizing wheel (71) fixed on the periphery of the upper shaft (2), a lower synchronizing wheel (72) fixed on the periphery of the transmission shaft (6) and a synchronous belt (73), wherein the upper synchronizing wheel (71) is connected with the lower synchronizing wheel (72) through the synchronous belt (73).
3. The rotary shuttle angle adjustment mechanism of claim 1, wherein: the rotating arm (81) is rotatably arranged on the periphery of the transmission shaft (6) through a bearing (10); the gear shaft (82) is rotatably mounted in the radial arm (81) through a bearing (10).
4. The rotary shuttle angle adjustment mechanism of claim 1, wherein: the swing arm (81) comprises an arm main body part (811) connected with the third transmission mechanism (9) and two arm mounting plate parts (812) extending out of the arm main body part (811) and arranged oppositely, and the gear shaft (82) is mounted in each arm mounting plate part (812).
5. The rotary hook angle adjustment mechanism according to claim 1 or 4, wherein: the third transmission mechanism (9) comprises a worm (91) driven to rotate by the adjusting driving source (5) and a worm wheel (92) in transmission fit with the worm (91), and the worm wheel (92) is fixed on the periphery of the swing arm (81).
6. The rotary shuttle angle adjustment mechanism of claim 1, wherein: the adjusting driving source (5) is an adjusting motor.
7. A sewing machine characterized by: the sewing machine is provided with the rotating shuttle angle adjusting mechanism of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242118.XA CN111088610B (en) | 2018-10-24 | 2018-10-24 | Rotating shuttle angle adjusting mechanism and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242118.XA CN111088610B (en) | 2018-10-24 | 2018-10-24 | Rotating shuttle angle adjusting mechanism and sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111088610A CN111088610A (en) | 2020-05-01 |
| CN111088610B true CN111088610B (en) | 2021-11-09 |
Family
ID=70392412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811242118.XA Active CN111088610B (en) | 2018-10-24 | 2018-10-24 | Rotating shuttle angle adjusting mechanism and sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111088610B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04156889A (en) * | 1990-10-19 | 1992-05-29 | Brother Ind Ltd | Sewing machine |
| CN200946645Y (en) * | 2006-08-29 | 2007-09-12 | 王世敏 | Mini speed reducer |
| JP5759180B2 (en) * | 2011-01-04 | 2015-08-05 | Juki株式会社 | sewing machine |
| JP6001424B2 (en) * | 2011-12-26 | 2016-10-05 | Juki株式会社 | sewing machine |
| JP2013212189A (en) * | 2012-03-30 | 2013-10-17 | Brother Ind Ltd | Sewing machine |
| CN103711844B (en) * | 2013-12-12 | 2016-08-10 | 张秘来 | A kind of Multi-planetary-geartransmission transmission device |
| CN206448026U (en) * | 2017-02-08 | 2017-08-29 | 拓卡奔马机电科技有限公司 | A kind of feeding drive mechanism of chain type buttonhole machine |
| CN108035083B (en) * | 2018-01-09 | 2019-11-29 | 浙江伊森爱家纺有限公司 | A kind of head driving structure applied to the double rotating-shuttle quilting machine of computer |
-
2018
- 2018-10-24 CN CN201811242118.XA patent/CN111088610B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111088610A (en) | 2020-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111118758B (en) | Needle and shuttle cooperation automatic regulating mechanism and sewing machine | |
| CN109487454B (en) | Presser foot device is lifted to sewing machine's trimming | |
| CN109989185B (en) | Control and adjustment method for needle pitch on sewing machine | |
| CN112048838B (en) | Sewing machine | |
| CN205741515U (en) | The needle gage of a kind of sewing machine directly drives controlling organization | |
| CN111088610B (en) | Rotating shuttle angle adjusting mechanism and sewing machine | |
| CN103614866B (en) | A kind of method controlling electro-pattern-sewing machine and adapt to the sewing of different-thickness sewing | |
| CN111118759B (en) | Needle and shuttle cooperation automatic regulating mechanism and sewing machine | |
| CN111088611B (en) | Rotating shuttle angle adjusting mechanism and sewing machine | |
| CN110983659A (en) | Sewing machine and take-up and cloth-needling mechanism thereof | |
| CN111118757B (en) | Control method for needle shuttle matching automatic adjustment | |
| CN205874686U (en) | Sewing machine's needle bar subassembly structure | |
| CN210002050U (en) | Needle pitch adjusting and backstitch control device on sewing machines | |
| CN211471782U (en) | Cloth dragging wheel lifting mechanism of sewing machine | |
| US2438636A (en) | Sewing machine | |
| CN216404741U (en) | Double-needle flat sewing machine | |
| CN210012977U (en) | Structure is adjusted to sewing machine's encryption seam | |
| CN207699814U (en) | Lockstitch button holder driving mechanism | |
| CN109706640A (en) | A kind of sewing machine and its Yarn taking-up mechanism | |
| CN110241520A (en) | A kind of feeding driving structure of novel rumble foot machine | |
| CN110725076B (en) | Needle bar height automatic regulating mechanism and sewing machine | |
| US2193754A (en) | Feeding mechanism for sewing machines | |
| CN213925356U (en) | Needle bar rotating machine head | |
| CN110241521A (en) | A kind of feeding driving structure of rumble foot machine | |
| CN212247418U (en) | Encrypted seam adjusting structure of flat seaming machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |