CN106592116B - Reverse stitch length error adjusting structure of sewing machine - Google Patents
Reverse stitch length error adjusting structure of sewing machine Download PDFInfo
- Publication number
- CN106592116B CN106592116B CN201710025771.XA CN201710025771A CN106592116B CN 106592116 B CN106592116 B CN 106592116B CN 201710025771 A CN201710025771 A CN 201710025771A CN 106592116 B CN106592116 B CN 106592116B
- Authority
- CN
- China
- Prior art keywords
- needle
- adjusting
- stitch length
- seat
- eccentric
- 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
- D05B27/00—Work-feeding means
- D05B27/22—Work-feeding means with means for setting length of stitch
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2209/00—Use of special materials
- D05D2209/08—Use of special materials elastic, e.g. rubber spring
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a reverse stitch length error adjusting structure of a sewing machine, which belongs to the technical field of sewing machines and comprises a machine shell, a stitch length seat arranged in the machine shell and a stitch length eccentric swing rod shaft for driving the stitch length seat to rotate; the cylindrical cambered surface of the needle distance eccentric swing rod shaft is provided with a square groove, the rotation is realized through a group of needle distance adjusting screws arranged in the groove, the end surface of the needle distance eccentric swing rod shaft is also provided with an eccentric pin, and the eccentric pin is parallel to but not coincident with the two axes of the needle distance eccentric swing rod shaft; the needle distance seat is provided with a pin hole, the eccentric pin is inserted into the pin hole to fix the needle distance seat, the needle distance seat is driven by the eccentric pin to rotate, and the needle distance seat is movably hinged with a backstitch connecting rod through a needle distance connecting rod pin; an adjusting component for transmitting and adjusting the needle pitch error is also arranged in the machine shell. The invention has simple structure and convenient operation, and can realize the adjustment of the needle pitch error of the sewing machine; in addition, the device reduces the cost of the gauge mark disc, increases the stability of the gauge mark after adjustment, and effectively improves the accuracy of adjustment.
Description
Technical Field
The invention relates to the technical field of sewing machines, in particular to a structure for adjusting an inverted stitch length error of a sewing machine.
Background
When a sewing machine is used for sewing the cloth, the stitch length of the sewing machine is expected to be uniform and attractive, and an operator is required to adjust the stitch length mechanism at any time according to the needs. As the cloth sewn by people is thick and thin and soft and hard, the stitch length is adjusted to be larger when the thick material and the hard material are made, and the stitch length is adjusted to be smaller when the soft material and the thin material are made, namely, the stitch length is required to be longer and the stitch length is required to be shorter. Therefore, the proper needle distance must be selected by the needle distance adjusting mechanism at any time according to the properties of the clothing material, but the aim is not achieved by one-time adjustment in the adjusting process. When the silk fabric type clothing is sewn, the clothing is smooth, so that the feeding teeth are difficult to feed the clothing to a proper position, the phenomenon of smaller needle pitch is caused, and the needle pitch is properly adjusted to be quite proper.
However, when the backstitch operation of the common backstitch machine is used, the belt pulley is required to be rotated once by hand, the hand wheel is required to be frequently disassembled, and especially when the integration degree of the sewing machine is higher and higher, the hand wheel, the electric control part and the motor are required to be disassembled simultaneously during adjustment, so that the eccentric position of the needle distance seat can be adjusted, the assembly efficiency is greatly affected, even the electric control part and the motor are easy to damage due to frequent disassembly, and after-sale maintenance is inconvenient. The prior art designs a gauge eccentric rocker shaft to realize gauge adjustment, which reduces the cost of the whole part which needs to be adjusted by a gauge scale in the past.
Disclosure of Invention
The invention aims to solve the problems and provide the structure for adjusting the reverse stitch length error of the sewing machine, which has simple structure and convenient operation and can realize the adjustment of the stitch length error of the sewing machine; in addition, the device reduces the cost of the gauge length gauge pad, weakens a complex process structure, increases the stability of the gauge length after adjustment, and effectively improves the accuracy of adjustment.
In order to achieve the above purpose, the invention adopts the following technical scheme: the sewing machine comprises a machine shell (1), a needle distance seat (8) arranged in the machine shell (1), and a needle distance eccentric swing rod shaft (5) for driving the needle distance seat (8) to rotate; the cylindrical cambered surface of the needle distance eccentric swing rod shaft (5) is provided with a square groove, rotation is realized through a group of needle distance adjusting screws (6) arranged in the groove, the end surface of the needle distance eccentric swing rod shaft (5) is also provided with an eccentric pin (51), and the two axes of the eccentric pin (51) and the needle distance eccentric swing rod shaft (5) are parallel and do not coincide; the needle distance seat (8) is provided with a pin hole, the eccentric pin (51) is inserted into the pin hole to fix the needle distance seat (8) and realize self rotation to drive the needle distance seat (8), and the needle distance seat (8) is movably hinged with a backstitch connecting rod (9) through a needle distance connecting rod pin (81); an adjusting component for transmitting and adjusting the stitch length error is also arranged in the shell (1).
Further, the adjusting component comprises a backstitch platform (3) and a stitch length connecting rod (4); the novel sewing machine is characterized in that an upper shaft (2) is connected in the machine shell (1), the upper end of the gauge needle connecting rod (4) is hinged to a side wall groove of the backstitch platform (3), and the lower end of the gauge needle connecting rod penetrates through the upper shaft (2) to the other side of the base of the machine shell (1) and can rotate relative to the upper shaft (2) and move back and forth along the vertical direction.
Further, the other end of the backstitch connecting rod (9) is hinged on the cylindrical side wall of the backstitch platform (3).
Furthermore, the connecting grooves are arranged on the side wall of the backstitch platform (3), and the axes of the connecting grooves are symmetrically arranged relative to the backstitch platform; the connecting groove for hinging the needle pitch connecting rod (4) and the backstitch platform (3) is provided with a backstitch platform guide plate (31) for preventing deflection caused by vibration in the movement process, and the other connecting groove is hinged with the backstitch connecting rod (9) through a supporting shaft (34) and a supporting shaft pin (35).
Furthermore, a backstitch platform shaft sleeve (32) and a backstitch platform tightening ring (33) with the fixing function are also arranged on the bearing of the backstitch platform (3).
Further, a small tension spring frame (10) is fixed on the needle distance seat (8), a backstitch operating tension spring (12) with a resetting function is arranged on the small tension spring frame (10), and the other end of the backstitch operating tension spring is connected with a tension spring frame (11) fixed on the inner wall of the shell (1).
Further, the needle distance eccentric swing rod shaft (5) is movably arranged on the inner wall of the machine shell (1) and can rotate relative to the machine shell (1).
Further, threads are arranged in the gauge needle adjusting screw (6), the locking screw (7) is screwed at the threads, and the gauge needle adjusting screw (6) can be pushed to realize the anticlockwise or clockwise rotation of 0-30 degrees of the gauge needle eccentric swing rod shaft (5).
Further, the locking screw (7) penetrates through the outside of the shell (1), and a push button can be arranged on the end face of the locking screw (7).
The invention has the beneficial effects that:
the end face of the needle distance eccentric swing rod shaft is provided with an eccentric pin, and the eccentric pin is parallel to but not coincident with the two axes of the needle distance eccentric swing rod shaft, so that the center distance between the shafts can be conveniently adjusted, and meanwhile, the function of a revolution eccentric shaft is transmitted, so that the rotation of the needle distance seat is realized.
An upper shaft is connected in the shell, the upper end of the gauge connecting rod is hinged on a side wall groove of the backstitch platform, and the lower end of the gauge connecting rod passes through the upper shaft to the other side of the shell base and can rotate relative to the upper shaft and move back and forth along the vertical direction; the backstitch platform guide plate on the connecting groove can protect the equidistant effect of the lines in the movement process and realize the control of the needle pitch connecting rod.
The gauge length adjusting screw is arranged in the groove of the gauge length eccentric swing rod shaft, so that the problem that the gauge length is adjusted by the gauge length gauge plate in the past is solved, a large amount of cost is reduced, and the gauge length eccentric swing rod is convenient for operators to use.
The backstitch platform shaft sleeve and the backstitch platform tightening ring are arranged on the bearing of the backstitch platform, so that the backstitch platform is prevented from jumping relative to the machine shell during rotation.
The invention realizes the adjustment of the reverse stitch length error, can ensure that the sewing machine operates more stably, and improves the sewing quality of leather and clothes.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic front view of fig. 1.
Fig. 3 is a schematic top view of the present invention.
Fig. 4 is a partial schematic view of the present invention.
Fig. 5 is an assembly view of the present invention.
Fig. 6 is a schematic perspective view of a needle pitch eccentric swing rod shaft in the present invention.
Fig. 7 is a schematic perspective view of a prior art device for adjusting stitch length errors.
The text labels in the figures are expressed as: 1. a housing; 2. an upper shaft; 3. backstitch table; 4. a needle pitch connecting rod; 5. a needle pitch eccentric swing rod shaft; 6. a gauge needle adjusting screw; 7. a locking screw; 8. a needle distance seat; 9. backstitch connecting rod; 10. a small tension spring frame; 11. a tension spring frame; 12. backstitch control lever tension spring; 31. backstitch table guide plate; 32. backstitch table shaft sleeve; 33. backstitch bench tight ring; 34. a support shaft; 35. a support shaft pin; 51. an eccentric pin; 81. a pitch link pin.
Description of the embodiments
In order that those skilled in the art may better understand the technical solutions of the present invention, the following detailed description of the present invention with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present invention.
As shown in fig. 1 to 6, the specific structure of the present invention is: the sewing machine comprises a machine shell 1, a needle distance seat 8 arranged in the machine shell 1 and a needle distance eccentric swing rod shaft 5 for driving the needle distance seat 8 to rotate; the cylindrical cambered surface of the needle distance eccentric swing rod shaft 5 is provided with a square groove, the rotation is realized through a group of needle distance adjusting screws 6 arranged in the groove, the end surface of the needle distance eccentric swing rod shaft 5 is also provided with an eccentric pin 51, and the eccentric pin 51 is parallel to but not coincident with the two axes of the needle distance eccentric swing rod shaft 5; the needle distance seat 8 is provided with a pin hole, the eccentric pin 51 is inserted into the pin hole to fix the needle distance seat 8, so as to realize self rotation to drive the needle distance seat 8, and the needle distance seat 8 is movably hinged with a backstitch connecting rod 9 through a needle distance connecting rod pin 81; an adjusting component for transmitting and adjusting the stitch length error is also arranged in the shell 1.
Preferably, the adjusting assembly comprises a backstitch platform 3 and a stitch length connecting rod 4; the machine shell 1 is internally connected with an upper shaft 2, the upper end of a gauge needle connecting rod 4 is hinged on a side wall groove of the backstitch platform 3, and the lower end of the gauge needle connecting rod penetrates through the upper shaft 2 to the other side of the base of the machine shell 1, can rotate relative to the upper shaft 2 and can move back and forth along the vertical direction.
Preferably, the other end of the backstitch connecting rod 9 is hinged on the cylindrical side wall of the backstitch platform 3.
Preferably, the connecting grooves are arranged on the side wall of the backstitch platform 3, and the axes of the connecting grooves are symmetrically arranged relative to the backstitch platform; the connecting groove for hinging the needle pitch connecting rod 4 and the backstitch platform 3 is provided with a backstitch platform guide plate 31 for preventing deflection caused by vibration in the movement process, and the other connecting groove is hinged with the backstitch connecting rod 9 through a supporting shaft 34 and a supporting shaft pin 35.
Preferably, the bearing of the backstitch platform 3 is also provided with a backstitch platform shaft sleeve 32 and a backstitch platform tight ring 33 which have the fixing function.
Preferably, a small tension spring frame 10 is fixed on the gauge needle seat 8, a backstitch operating tension spring 12 with a resetting function is arranged on the small tension spring frame 10, and the other end is connected with a tension spring frame 11 fixed on the inner wall of the machine shell 1.
Preferably, the needle distance eccentric swing rod shaft 5 is movably arranged on the inner wall of the casing 1 and can rotate relative to the casing 1.
Preferably, threads are arranged in the gauge control screw 6, the locking screw 7 is screwed at the threads, and the gauge control screw 6 can be pushed to realize the anticlockwise or clockwise rotation of 0-30 degrees of the gauge eccentric swing rod shaft 5.
Preferably, the locking screw 7 penetrates through the casing 1, and a push button may be disposed on the end surface of the locking screw 7.
The working principle of the invention is as follows:
the needle pitch eccentric swing rod shaft 5 is coaxially matched with the machine shell 1, the needle pitch eccentric swing rod shaft 5 is movably arranged in the machine shell 1 and can rotate relative to the machine shell 1, and the needle pitch seat 8 is fixed on the needle pitch eccentric swing rod shaft 5; as shown in fig. 7, in the prior art, a fixed gauge eccentric rocker shaft 5 is adopted to mount a gauge seat 8, the abutting surface of the gauge seat 8 is pushed by adjusting the expansion and contraction of a gauge dial, and a backstitch connecting rod 9 is driven to rotate, so that the gauge adjustment is realized, and in the adjustment mode, because the gauge eccentric rocker shaft 5 is movably connected with the gauge seat 8, the gauge seat 8 generates axial displacement, the adjustment accuracy is reduced, and in the past, when the backstitch gauge is adjusted, a cover plate of a machine shell 1 is also required to be detached, and a hand is stretched into the machine shell 1 to rotate the gauge eccentric rocker shaft 5; by adopting the structure of the invention for adjustment, the cost of the gauge length gauge pad can be saved, the gauge length and backstitch can be adjusted without disassembling the machine shell 1, the stability after adjustment can be improved, the structure of the sewing machine is reduced to a certain extent, and the assembly flow is weakened.
As shown in figure 1, when the needle pitch is adjusted, the locking screw 7 is pushed to drive the needle pitch eccentric swing rod shaft 5 to rotate, and as the needle pitch seat 8 is fixed on the eccentric pin 51 and is eccentric, the needle pitch seat 8 is driven to rotate together, the backstitch connecting rod 9 which is movably hinged with the needle pitch seat 8 drives the backstitch platform 3 to rotate, the upper end of the needle pitch connecting rod 4 is hinged on a side wall groove of the backstitch platform 3, the lower end of the needle pitch connecting rod passes through the upper shaft 2 to the other side of the chassis 1, and the needle pitch connecting rod can rotate relative to the upper shaft 2 and move back and forth along the vertical direction, thereby realizing the adjustment of the needle pitch backstitch.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this invention, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the invention, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present invention.
Claims (7)
1. The inverted stitch error adjusting structure of the sewing machine comprises a machine shell (1), a stitch gauge seat (8) arranged in the machine shell (1) and a stitch gauge eccentric rocker shaft (5) driving the stitch gauge seat (8) to rotate; the needle pitch eccentric swing rod is characterized in that a square groove is formed in the cylindrical cambered surface of the needle pitch eccentric swing rod shaft (5), rotation is achieved through a group of needle pitch adjusting screws (6) arranged in the square groove, an eccentric pin (51) is further arranged on the end face of the needle pitch eccentric swing rod shaft (5), and the eccentric pin (51) is parallel to but not coincident with two axes of the needle pitch eccentric swing rod shaft (5); the needle distance seat (8) is provided with a pin hole, the eccentric pin (51) is inserted into the pin hole to fix the needle distance seat (8) and realize self rotation to drive the needle distance seat (8), and the needle distance seat (8) is movably hinged with a backstitch connecting rod (9) through a needle distance connecting rod pin (81); an adjusting component for transmitting and adjusting the stitch length error is also arranged in the shell (1);
the adjusting assembly comprises a backstitch platform (3) and a stitch length connecting rod (4); an upper shaft (2) is connected in the casing (1), the upper end of the gauge needle connecting rod (4) is hinged on a side wall groove of the backstitch platform (3), and the lower end of the gauge needle connecting rod passes through the upper shaft (2) to the other side of the base of the casing (1) and can rotate relative to the upper shaft (2) and move back and forth along the vertical direction;
the needle distance eccentric swing rod shaft (5) is movably arranged on the inner wall of the machine shell (1) and can rotate relative to the machine shell (1).
2. The reverse stitch length error adjusting structure of a sewing machine according to claim 1, wherein the other end of the reverse stitch connecting rod (9) is hinged on the cylindrical side wall of the reverse stitch table (3).
3. The structure for adjusting the reverse stitch length error of the sewing machine according to claim 1 or 2, wherein the connecting grooves are arranged on the side wall of the reverse stitch table (3), and the axes of the connecting grooves are symmetrically arranged relative to the reverse stitch table; the connecting groove for hinging the needle pitch connecting rod (4) and the backstitch platform (3) is provided with a backstitch platform guide plate (31) for preventing deflection caused by vibration in the movement process, and the other connecting groove is hinged with the backstitch connecting rod (9) through a supporting shaft (34) and a supporting shaft pin (35).
4. The structure for adjusting the reverse stitch length error of the sewing machine according to claim 1, wherein a backstitch platform shaft sleeve (32) and a backstitch platform tight ring (33) which play a role in fixing are further arranged on a bearing of the backstitch platform (3).
5. The structure for adjusting the reverse stitch length error of the sewing machine according to claim 1, wherein a small tension spring frame (10) is fixed on the stitch length seat (8), one end of a reverse stitch control tension spring (12) with a resetting function is arranged on the small tension spring frame (10), and the other end of the reverse stitch control tension spring (12) is connected with a tension spring frame (11) fixed on the inner wall of the machine shell (1).
6. The structure for adjusting the reverse stitch length error of the sewing machine according to claim 1, wherein the stitch length adjusting screw (6) is internally provided with threads, the locking screw (7) is screwed at the threads, and the stitch length adjusting screw (6) can be pushed to realize the anticlockwise or clockwise rotation of 0-30 degrees of the stitch length eccentric swing rod shaft (5).
7. The structure for adjusting the reverse stitch length error of the sewing machine according to claim 6, wherein the locking screw (7) penetrates through the outside of the casing (1), and a push button is arranged on the end face of the locking screw (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710025771.XA CN106592116B (en) | 2017-01-13 | 2017-01-13 | Reverse stitch length error adjusting structure of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710025771.XA CN106592116B (en) | 2017-01-13 | 2017-01-13 | Reverse stitch length error adjusting structure of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106592116A CN106592116A (en) | 2017-04-26 |
| CN106592116B true CN106592116B (en) | 2023-06-30 |
Family
ID=58586044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710025771.XA Active CN106592116B (en) | 2017-01-13 | 2017-01-13 | Reverse stitch length error adjusting structure of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106592116B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853142A (en) * | 2019-02-28 | 2019-06-07 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11151392A (en) * | 1997-11-21 | 1999-06-08 | Juki Corp | Needle width adjusting mechanism of needle clamp |
| JP4198236B2 (en) * | 1998-08-18 | 2008-12-17 | Ｊｕｋｉ株式会社 | 2-needle sewing machine and belt loop sewing machine |
| CN2913410Y (en) * | 2005-12-06 | 2007-06-20 | 中国标准缝纫机公司上海惠工缝纫机三厂 | New type sewing machine needle distance regulating mechanism |
| DE102009004217A1 (en) * | 2009-01-09 | 2010-07-15 | Dürkopp Adler AG | Two-needle sewing machine |
| CN202509239U (en) * | 2012-03-10 | 2012-10-31 | 新杰克缝纫机股份有限公司 | Needle pitch scaleplate lock bar device for sewing machine |
| JP6070256B2 (en) * | 2013-02-21 | 2017-02-01 | アイシン精機株式会社 | sewing machine |
| CN203360799U (en) * | 2013-07-15 | 2013-12-25 | 西安标准工业股份有限公司 | Locking device of needle pitch scale plate of sewing machine |
| CN104878522B (en) * | 2015-05-21 | 2020-09-11 | 陈贤德 | Feed dog frame for sewing machine |
| CN105908386B (en) * | 2016-06-24 | 2020-11-24 | 杰克缝纫机股份有限公司 | Needle pitch adjusting device and sewing machine |
| CN206570503U (en) * | 2017-01-13 | 2017-10-20 | 湖南兴德缝制股份有限公司 | The sewing machine error transfer factor of falling needle gage structure |
-
2017
- 2017-01-13 CN CN201710025771.XA patent/CN106592116B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106592116A (en) | 2017-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106120172B (en) | Cloth feeding mechanism with needle gage regulatory function | |
| CN106592116B (en) | Reverse stitch length error adjusting structure of sewing machine | |
| CN202107876U (en) | Tuning type pressure foot pressure adjustment device | |
| JP2008259752A (en) | Feeder of sewing machine | |
| JP2013042819A (en) | Column form high head sewing machine | |
| JP2013233427A (en) | Sewing machine | |
| US2793600A (en) | Sewing machine | |
| CN107245818B (en) | A kind of simple take-up regulating mechanism of sewing machine and sewing machine | |
| CN209550898U (en) | Positioning device | |
| TWI711734B (en) | Sewing machine with upper feeding stop mechanism | |
| CN208552430U (en) | A kind of folder rubs massage machine | |
| US3793969A (en) | Presser bar pressure control modules | |
| CN201538083U (en) | Rotating disc drive device of multi-station screen printing machine | |
| CN112626737B (en) | Transmission clutch mechanism and sewing machine | |
| US3967565A (en) | Cloth feeding device for sewing machine and method thereof | |
| CN106149214B (en) | Differential adjusting mechanism | |
| KR101845088B1 (en) | A post-bed sewing machine | |
| JP2009112819A (en) | Sewing machine | |
| JP2002204898A (en) | Needle movement sewing machine | |
| CN220746244U (en) | Needle distance adjusting structure of sewing machine and sewing machine | |
| ATE384155T1 (en) | FABRIC PRESSER DEVICE FOR A SEWING MACHINE | |
| CN210002050U (en) | Needle pitch adjusting and backstitch control device on sewing machines | |
| CN220568593U (en) | Jacquard wear-resisting test mechanism | |
| CN202809246U (en) | Eccentric adjusting shaft | |
| CN216274651U (en) | Double-synchronous-belt electric mop wheel structure |
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 |