CN105908386B - Needle pitch adjusting device and sewing machine - Google Patents
Needle pitch adjusting device and sewing machine Download PDFInfo
- Publication number
- CN105908386B CN105908386B CN201610492841.8A CN201610492841A CN105908386B CN 105908386 B CN105908386 B CN 105908386B CN 201610492841 A CN201610492841 A CN 201610492841A CN 105908386 B CN105908386 B CN 105908386B
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- needle pitch
- adjusting
- connecting rod
- shaft
- needle
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- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention belongs to the technical field of sewing equipment, in particular to a needle pitch adjusting device, which comprises a main shaft, a needle pitch adjusting shaft and a connecting pin, wherein an adjusting sleeve synchronously rotating along with the needle pitch adjusting shaft is arranged on the needle pitch adjusting shaft; the invention can realize the adjustment of the stitch length only by simple connecting rods, connecting pins and sliding grooves without the mutual matching of a plurality of high-precision eccentric cams, and has simple and convenient installation, thereby solving the problems of difficult processing, low precision, easy blocking and the like of the existing stitch length cloth feeding assembly.
Description
Technical Field
The invention belongs to the technical field of sewing equipment, and particularly relates to a needle pitch adjusting device and a sewing machine.
Background
The existing needle pitch adjusting mechanism mainly comprises a plurality of parts, such as a cloth feeding eccentric, a small eccentric wheel, a cloth feeding connecting rod, an eccentric wheel, a needle opening eccentric cam, a needle opening lifting torsion shaft and the like, and the number of the parts is large and complex, as shown in figure 1. The principle is as follows: the needle opening lifting torsion shaft 1 is pressed into the clamping groove of the needle opening eccentric cam 2, then the main driving shaft is rotated, the relative position relation among the cloth feeding eccentric 3, the small eccentric wheel 4, the eccentric wheel 5 and the needle opening eccentric cam 2 is changed, the initial phase between the feeding connecting rod 6 and the feeding crank 7 is changed, and the needle pitch adjustment is realized. However, if the processing precision and the assembling precision are not sufficiently high for the eccentric parts such as the cloth feeding eccentric 3, the small eccentric 4, the eccentric 5, and the needle opening eccentric cam 2, the phenomena of connection looseness, deformation, friction, etc. are easily generated, and the phenomena of feeding with higher precision, jamming, burning, etc. are not stable may occur.
Disclosure of Invention
The invention aims to provide a needle distance adjusting device of a sewing machine, which is simple to install, low in cost and convenient to adjust.
The invention is realized by the following steps:
the needle pitch adjusting device comprises a main shaft, a needle pitch adjusting shaft and a connecting pin, wherein an adjusting sleeve which rotates synchronously along with the needle pitch adjusting shaft is arranged on the needle pitch adjusting shaft, a needle pitch eccentric wheel is arranged on the main shaft and is connected with the connecting pin through a needle pitch connecting rod, the connecting pin is further connected with a feeding crank of a feeding mechanism through the feeding connecting rod, the connecting pin is connected with the adjusting sleeve, the needle pitch adjusting shaft rotates to drive the adjusting sleeve to rotate, the connecting pin is driven to generate displacement along the radial direction of the adjusting sleeve, and then the initial phase between the needle pitch connecting rod and the feeding connecting rod is changed, and the change of the inclination angle of the feeding crank is driven to realize the adjustment of the needle pitch.
In the above needle pitch adjusting device, the inner end of the adjusting sleeve is provided with a chute along the radial direction thereof, a sliding block is arranged in the chute, and the sliding block is sleeved on the connecting pin.
In the above needle pitch adjusting device, the outer end of the needle pitch adjusting shaft is connected to the casing through a locking knob or a wrench; or is connected with an adjusting plate which is fixed on the machine shell.
In the above needle pitch adjusting device, the adjusting sleeve is locked and fixed on the needle pitch adjusting shaft by a fastener; or the adjusting sleeve and the needle pitch adjusting shaft are of an integrated structure.
In the above needle pitch adjusting device, the needle pitch eccentric wheel is locked and fixed on the main shaft by a fastener; or the needle pitch eccentric wheel and the main shaft are of an integrated structure.
In the above-mentioned needle pitch adjusting device, one end of the needle pitch connecting rod is connected to the needle pitch eccentric wheel, and the other end is connected to the connecting pin.
In the above needle pitch adjusting device, the outer end of the needle pitch adjusting shaft is connected with the motor and is driven to rotate by the motor.
In the above needle pitch adjusting device, one end of the feeding connecting rod is fixed on the connecting pin, the other end of the feeding connecting rod is fixed on the positioning pin, and the positioning pin is connected with the feeding crank.
In the above needle pitch adjusting device, the adjusting sleeve rotates synchronously with the needle pitch adjusting shaft.
Another object of the present invention is to provide a sewing machine comprising a gauge adjustment device as described above.
Compared with the prior art, the invention has the outstanding advantages that:
1. the invention is provided with an independent needle pitch adjusting mechanism which is matched with the cloth feeding mechanism in a cooperative way, the needle pitch of the mechanism can be adjusted by adjusting the inclination angle of the chute of the adjusting sleeve relative to the horizontal direction, and the purpose of adjusting the needle pitch can be achieved;
2. the invention has simple mechanism, can effectively reduce the installation time, is convenient to maintain and disassemble, replaces the original precision parts required by the needle pitch adjustment, greatly reduces the processing cost and time of the parts, and reduces the purchasing cost of enterprises to a certain extent;
3. the invention can effectively reduce the cost from the mechanism while ensuring the purpose of adjusting the needle pitch, and can invisibly improve the sales volume of the machine.
Description of the drawings:
fig. 1 is a schematic diagram of the background art.
Fig. 2 is a schematic diagram (one) of the present invention.
Fig. 3 is a schematic diagram (two) of the present invention.
Fig. 4 is a schematic diagram (iii) of the present invention.
Fig. 5 is an exploded schematic view of the present invention.
Fig. 6 is a schematic view of the present invention mounted on a chassis.
Fig. 7 is a schematic view of an adjustment sleeve of the present invention.
In fig. 1: 1. opening the needle lifting torsion shaft; 2. an open needle eccentric cam; 3. the cloth feeding is eccentric; 4. a small eccentric wheel; 5. an eccentric wheel; 6. a feeding connecting rod; 7. a feeding crank.
In FIGS. 2-7: 8. a main shaft; 9. a needle pitch adjusting shaft; 10. a connecting pin; 11. an adjustment sleeve; 12. a needle pitch eccentric wheel; 13. a needle pitch link; 14. a feeding connecting rod; 15. a feeding crank; 16. a chute; 17. a slider; 18. a housing; 19. and a positioning pin.
The specific implementation mode is as follows:
the invention will now be further described by way of specific examples, with reference to figures 2 to 7:
a needle pitch adjusting device comprises a main shaft 8, a needle pitch adjusting shaft 9 and a connecting pin 10, wherein an adjusting sleeve 11 is arranged on the needle pitch adjusting shaft 9, a needle pitch eccentric wheel 12 is arranged on the main shaft 8, the needle pitch eccentric wheel 12 is connected with the connecting pin 10 through a needle pitch connecting rod 13, the connecting pin 10 is further connected with a feeding crank 15 of a feeding mechanism through a feeding connecting rod 14, the connecting pin 10 is connected with the adjusting sleeve 11, the needle pitch adjusting shaft 9 rotates to drive the adjusting sleeve 11 to rotate, the connecting pin 10 is driven to generate displacement along the radial direction of the adjusting sleeve 11, further, the initial phase between the needle pitch connecting rod 13 and the feeding connecting rod 14 is changed, and the change of the inclination angle of the feeding crank 15 is driven to realize the adjustment of the needle pitch.
The adjusting sleeve 11 of the invention can synchronously rotate along with the needle pitch adjusting shaft 9.
In particular, the pitch link 13 is connected at one end to the pitch eccentric 12 and at the other end to the connecting pin 10. The connecting end of the needle pitch connecting rod 13, the needle pitch eccentric wheel 12 and the connecting pin 10 can be a circular hole or a U-shaped groove.
One end of the feeding connecting rod 14 is fixed on the connecting pin 10, the other end of the feeding connecting rod is fixed on the positioning pin 19, and the positioning pin 19 is connected with the feeding crank 15.
The displacement of the connecting pin 10 in the radial direction of the adjusting sleeve 11 can be achieved by the following structure: the inner end of the adjusting sleeve 11 is provided with a sliding groove 16 along the radial direction, a sliding block 17 is arranged in the sliding groove 16, and the sliding block 17 is sleeved on the connecting pin 10.
In addition to the above configuration, one end of the connecting pin 10 may be provided with a sliding portion that slides along the slide groove 16, the sliding portion and the connecting pin 10 may be configured as an integral structure, a component for restricting the feed link 14 of the pitch link 13 such as a retainer ring may be provided at the head of the connecting pin 10, and the feed link 14 of the pitch link 13 may be provided between the retainer ring and the sliding portion.
The outer end of the needle pitch adjusting shaft 9 of the invention is connected with the shell 18 through a locking knob or a spanner; or connected with an adjusting plate fixed on the machine shell 18.
The needle pitch adjusting shaft 9 can be rotated manually or connected with a motor at the outer end of the needle pitch adjusting shaft 9 and driven to rotate by the motor.
In order to achieve a synchronous rotation of the adjusting sleeve 11 with the needle pitch adjusting shaft 9, the adjusting sleeve 11 is fastened to a flat surface on the needle pitch adjusting shaft 9 by a fastening element.
In order to achieve a synchronous rotation of the pitch cam 12 with the main shaft 8, the pitch cam 12 is fastened to the plane of the main shaft 8 by means of fasteners.
The working principle of the invention is as follows:
the needle pitch adjusting shaft 9 is coaxially matched with the machine shell 18, when the needle pitch is fixed, the end part of the needle pitch adjusting shaft 9 is fixed with the machine shell 18 or a fixed adjusting plate arranged on the machine shell 18 through a locking knob or a spanner, the adjusting sleeve 11 is locked and fixed on a plane on the needle pitch adjusting shaft 9 through a screw, and the adjusting sleeve 11 is provided with a sliding groove 16 for the sliding block 17 to slide back and forth; the needle pitch eccentric wheel 12 is fixed on the upper plane of the main shaft 8 through a screw, one end part of the needle pitch connecting rod 13 is sleeved on the needle pitch eccentric wheel 12, and the other end of the needle pitch connecting rod is coaxially matched with the feeding connecting rod 14 and the sliding block 17 through the connecting pin 10; the feeding connecting rod 14, the positioning pin 19 and the connecting pin 10 are fastened together through screws.
When the needle pitch is adjusted, the needle pitch adjusting shaft 9 is rotated to drive the adjusting sleeve 11 to rotate together, the position of the sliding block 17 in the sliding groove 16 of the adjusting sleeve 11 is changed, namely, the initial phase between the needle pitch connecting rod 13 and the feeding connecting rod 14 is changed, and meanwhile, the inclination angle of the cloth feeding crank 15 is changed, so that the adjustment of the needle pitch can be realized. The sewing and feeding are realized through the matching of the mechanism and the feeding mechanism.
The invention also provides a sewing machine comprising the needle pitch adjusting device.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. A needle pitch adjusting device is characterized in that: the needle pitch adjusting mechanism comprises a main shaft, a needle pitch adjusting shaft and a connecting pin, wherein an adjusting sleeve is arranged on the needle pitch adjusting shaft, a needle pitch eccentric wheel is arranged on the main shaft and is connected with the connecting pin through a needle pitch connecting rod, the connecting pin is further connected with a feeding crank of a feeding mechanism through the feeding connecting rod, the connecting pin is connected with the adjusting sleeve, a sliding groove is radially formed in the inner end of the adjusting sleeve along the inner end of the adjusting sleeve, a sliding block is arranged in the sliding groove, the sliding block is sleeved on the connecting pin, the needle pitch adjusting shaft rotates to drive the adjusting sleeve to rotate, the adjusting sleeve drives the connecting pin to radially generate displacement along the adjusting sleeve through the sliding block, the initial phase between the needle pitch connecting rod and the feeding connecting rod is further changed, and.
2. A gauge adjustment device according to claim 1, wherein: the outer end of the needle pitch adjusting shaft is connected with the shell through a locking knob or a spanner; or is connected with an adjusting plate which is fixed on the machine shell.
3. A gauge adjustment device according to claim 1, wherein: the adjusting sleeve is locked and fixed on the needle pitch adjusting shaft through a fastener;
or the adjusting sleeve and the needle pitch adjusting shaft are of an integrated structure.
4. A gauge adjustment device according to claim 1, wherein: the needle pitch eccentric wheel is locked and fixed on the main shaft through a fastening piece;
or the needle pitch eccentric wheel and the main shaft are of an integrated structure.
5. A gauge adjustment device according to claim 1, wherein: one end of the needle pitch connecting rod is connected to the needle pitch eccentric wheel, and the other end of the needle pitch connecting rod is connected to the connecting pin.
6. A gauge adjustment device according to claim 1, wherein: the outer end of the needle pitch adjusting shaft is connected with a motor and is driven to rotate by the motor.
7. A gauge adjustment device according to claim 1, wherein: one end of the feeding connecting rod is fixed on the connecting pin, the other end of the feeding connecting rod is fixed on the positioning pin, and the positioning pin is connected with the feeding crank.
8. A gauge adjustment device according to claim 1, wherein: the adjusting sleeve rotates synchronously with the needle pitch adjusting shaft.
9. A sewing machine characterized by: comprising a gauge adjustment device according to any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492841.8A CN105908386B (en) | 2016-06-24 | 2016-06-24 | Needle pitch adjusting device and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492841.8A CN105908386B (en) | 2016-06-24 | 2016-06-24 | Needle pitch adjusting device and sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105908386A CN105908386A (en) | 2016-08-31 |
| CN105908386B true CN105908386B (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610492841.8A Active CN105908386B (en) | 2016-06-24 | 2016-06-24 | Needle pitch adjusting device and sewing machine |
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| Country | Link |
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| CN (1) | CN105908386B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592116B (en) * | 2017-01-13 | 2023-06-30 | 湖南兴德缝制股份有限公司 | Reverse stitch length error adjusting structure of sewing machine |
| CN106757825B (en) * | 2017-01-19 | 2019-05-31 | 台州市飞龙机械有限公司 | A kind of needle gage adjuster |
| CN107012597B (en) * | 2017-04-28 | 2019-10-25 | 杰克缝纫机股份有限公司 | A kind of simple needle gage regulating mechanism of sewing machine and sewing machine |
| CN109371578B (en) * | 2018-12-29 | 2023-10-31 | 杰克科技股份有限公司 | Mechanism for adjusting needle distance of sewing machine and working method thereof |
| CN109505072B (en) * | 2019-01-14 | 2021-04-06 | 杰克缝纫机股份有限公司 | Cloth feeding mechanism of sewing machine and sewing machine |
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| GB1095275A (en) * | 1965-06-04 | 1967-12-13 | Utilex Tool Company Ltd | Swingable edge guide for a sewing machine |
| JP2007222282A (en) * | 2006-02-22 | 2007-09-06 | Juki Corp | Sewing machine |
| CN102011274A (en) * | 2010-12-28 | 2011-04-13 | 浙江宝石机电股份有限公司 | Two-gear type stitch length adjusting device of sewing machine |
| CN203440614U (en) * | 2013-05-02 | 2014-02-19 | 新杰克缝纫机股份有限公司 | Control device for needle distance of sewing machine |
| CN206070127U (en) * | 2016-09-13 | 2017-04-05 | 台州市飞龙机械有限公司 | A kind of work feed component |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201155032Y (en) * | 2008-01-29 | 2008-11-26 | 耀大精密机械(深圳)有限公司 | Needle gauge compensation apparatus and sewing machine with bend sewing needle gauge compensation using the needle gauge compensation apparatus |
| CN204097699U (en) * | 2014-09-25 | 2015-01-14 | 杰克缝纫机股份有限公司 | Overlock machine cloth feeding mechanism |
| CN204097698U (en) * | 2014-09-25 | 2015-01-14 | 杰克缝纫机股份有限公司 | Overlock machine needle gage governor motion |
| CN104264378B (en) * | 2014-09-25 | 2016-02-17 | 杰克缝纫机股份有限公司 | Overlock machine needle gage governor motion |
| CN204097718U (en) * | 2014-10-23 | 2015-01-14 | 杰克缝纫机股份有限公司 | The needle gage adjustment structure that overlock machine is used and overlock machine |
| CN104499194B (en) * | 2015-01-20 | 2016-10-19 | 浙江中捷缝纫科技有限公司 | A kind of sewing machine roller press is just backstitching drive mechanism |
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2016
- 2016-06-24 CN CN201610492841.8A patent/CN105908386B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1095275A (en) * | 1965-06-04 | 1967-12-13 | Utilex Tool Company Ltd | Swingable edge guide for a sewing machine |
| JP2007222282A (en) * | 2006-02-22 | 2007-09-06 | Juki Corp | Sewing machine |
| CN102011274A (en) * | 2010-12-28 | 2011-04-13 | 浙江宝石机电股份有限公司 | Two-gear type stitch length adjusting device of sewing machine |
| CN203440614U (en) * | 2013-05-02 | 2014-02-19 | 新杰克缝纫机股份有限公司 | Control device for needle distance of sewing machine |
| CN206070127U (en) * | 2016-09-13 | 2017-04-05 | 台州市飞龙机械有限公司 | A kind of work feed component |
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|---|---|
| CN105908386A (en) | 2016-08-31 |
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Address after: 318000 no.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318010 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |