CN109208188B - Automatic needle pitch adjusting mechanism and sewing machine - Google Patents
Automatic needle pitch adjusting mechanism and sewing machine Download PDFInfo
- Publication number
- CN109208188B CN109208188B CN201811350760.XA CN201811350760A CN109208188B CN 109208188 B CN109208188 B CN 109208188B CN 201811350760 A CN201811350760 A CN 201811350760A CN 109208188 B CN109208188 B CN 109208188B
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- needle pitch
- pitch adjusting
- needle
- shaft
- adjusting
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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
Abstract
The invention provides an automatic needle pitch adjusting mechanism, which comprises a main shaft, a feeding shaft and a first feeding transmission assembly, wherein the main shaft and the feeding shaft are arranged in parallel, the first feeding transmission assembly is connected between the main shaft and the feeding shaft, the automatic needle pitch adjusting mechanism also comprises a needle pitch adjusting driving source and a needle pitch adjusting transmission assembly, the first feeding transmission assembly comprises a swinging seat with a fixed swinging axis, and the needle pitch adjusting driving source is connected with the swinging seat through the needle pitch adjusting transmission assembly; when the needle pitch adjusting driving source acts, the needle pitch adjusting driving source drives the swing seat to rotate around the fixed swing axis of the swing seat through the needle pitch adjusting transmission assembly, and the swing amplitude of the main shaft driving the feeding shaft to swing through the first feeding transmission assembly is changed. The invention can realize automatic adjustment and diversification of the needle pitch, is convenient to operate, and has high efficiency and accuracy, thereby improving the stitch aesthetic degree and providing the sewing quality.
Description
Technical Field
The invention relates to a sewing machine, in particular to an automatic needle pitch adjusting mechanism in the sewing machine.
Background
The existing lockstitch sewing machine is provided with a stitch length adjusting mechanism, the stitch length adjusting mechanism is manually adjusted, and the structure of the stitch length adjusting mechanism is shown in fig. 1, the existing stitch length adjusting mechanism comprises a dial button 100 positioned outside a sewing machine shell, a dial stud 200 in threaded connection with the sewing machine shell, a feeding adjuster 300 and a reverse feeding connecting rod 400, the dial button 100 is fixed with the front end of the dial stud 200, the rear end of the dial stud 200 is abutted against the front end face of the feeding adjuster 300, the rear end of the feeding adjuster 300 is hinged with the upper end of the reverse feeding connecting rod 400, and the lower end of the reverse feeding connecting rod 400 acts on a feeding transmission component connected between a sewing machine main shaft and a feeding shaft. When the needle pitch needs to be adjusted, an operator manually rotates the dial button 100, the dial button 100 drives the dial stud 200, the dial stud 200 moves forwards or backwards while rotating, and then the position of the component connected with the inverted feeding connecting rod 400 in the feeding transmission component is changed through the feeding adjuster 300 and the inverted feeding connecting rod 400, so that the swinging amplitude of the feeding shaft driven by the main shaft is changed, the stroke of the tooth frame moving forwards and backwards is changed, and the needle pitch adjustment is realized. However, the above-described needle pitch adjustment mechanism has the following drawbacks: the manual adjustment is adopted, so the operation is troublesome, the operation is passive, and the needle pitch can not be automatically adjusted in the sewing process.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide an automatic needle pitch adjustment mechanism capable of achieving automatic adjustment of the needle pitch.
In order to achieve the purpose, the invention provides an automatic needle pitch adjusting mechanism, which comprises a main shaft, a feeding shaft and a first feeding transmission assembly, wherein the main shaft and the feeding shaft are arranged in parallel, the first feeding transmission assembly is connected between the main shaft and the feeding shaft, the automatic needle pitch adjusting mechanism also comprises a needle pitch adjusting driving source and a needle pitch adjusting transmission assembly, the first feeding transmission assembly comprises a swinging seat with a fixed swinging axis, and the needle pitch adjusting driving source is connected with the swinging seat through the needle pitch adjusting transmission assembly; when the needle pitch adjusting driving source acts, the needle pitch adjusting driving source drives the swing seat to rotate around the fixed swing axis of the swing seat through the needle pitch adjusting transmission assembly, and the swing amplitude of the main shaft driving the feeding shaft to swing through the first feeding transmission assembly is changed.
Further, the gauge needle is adjusted the drive assembly and is included by gauge needle adjustment driving source drive pivoted gauge needle adjustment cam, gauge needle adjustment crank, fix the drive pin axle in gauge needle adjustment crank one end and be on a parallel with the gauge needle regulating spindle of pay-off axle, the gauge needle adjustment groove has been seted up towards the gauge needle adjustment cam on the side of gauge needle adjustment crank, drive pin axle and gauge needle regulating groove transmission cooperation and can follow the extending direction in gauge needle adjustment groove and remove for the gauge needle adjustment groove, the one end of gauge needle regulating spindle is fixed in the other end of gauge needle adjustment crank, the other end of gauge needle regulating spindle is fixed in swing seat.
Preferably, the needle pitch adjusting groove is a segment of circular arc groove.
Preferably, the middle position of the needle pitch adjusting groove is the lowest point of the needle pitch adjusting groove; when the transmission pin shaft is positioned at the lowest point of the needle pitch adjusting groove, the needle pitch of the sewing machine is zero.
Furthermore, the needle pitch adjusting transmission assembly comprises a needle pitch adjusting cam driven to rotate by a needle pitch adjusting driving source, a needle pitch adjusting crank, a transmission pin shaft fixed at one end of the needle pitch adjusting crank and a needle pitch adjusting shaft parallel to the feeding shaft, the peripheral surface of the needle pitch adjusting cam is provided with a reducing driving surface, the transmission pin shaft is abutted against the reducing driving surface, one end of the needle pitch adjusting shaft is fixed at the other end of the needle pitch adjusting crank, and the other end of the needle pitch adjusting shaft is fixed on the swinging seat.
Preferably, the needle pitch adjusting transmission assembly further comprises a pre-tightening spring sleeved on the needle pitch adjusting shaft, and one end of the pre-tightening spring is connected with the needle pitch adjusting crank to enable the transmission pin shaft to be tightly attached to the variable diameter driving surface of the needle pitch adjusting cam.
Preferably, when the transmission pin shaft is located at the middle position of the variable diameter driving surface, the needle pitch of the sewing machine is zero.
Furthermore, the needle pitch adjusting drive source is a drive motor and is fixed on the bottom surface of a table plate of the sewing machine, and the drive motor is a stepping motor.
Further, first pay-off drive assembly is still including fixing pay-off eccentric wheel, the pay-off connecting rod on the main shaft, be located the first swing arm in the pay-off connecting rod lower extreme outside, be located the second swing arm in the first swing arm outside and be fixed in the pay-off drive crank of pay-off axle, the second swing arm is located swing seat, the upper end of pay-off connecting rod rotationally the suit in the periphery of pay-off eccentric wheel, the lower extreme of pay-off connecting rod, the one end of first swing arm and the one end of second swing arm are coaxial articulated, the other end of first swing arm is articulated with pay-off drive crank, the other end and the swing seat of second swing arm are articulated.
The invention also provides a sewing machine, wherein the automatic needle pitch adjusting mechanism is arranged in the sewing machine.
As described above, the automatic needle pitch adjusting mechanism and the sewing machine according to the present invention have the following advantageous effects:
the invention can realize automatic adjustment and diversification of the needle pitch, is convenient to operate, and has high efficiency and accuracy, thereby improving the stitch aesthetic degree and providing the sewing quality.
Drawings
Fig. 1 is a schematic structural diagram of a needle pitch adjusting mechanism in the prior art.
Fig. 2 is a schematic structural diagram of a first embodiment of an automatic needle pitch adjusting mechanism in the present application.
Fig. 3 is an enlarged view of circle a of fig. 2.
Fig. 4 is a schematic structural view of the pitch adjustment cam of fig. 2.
Fig. 5 is a schematic structural diagram of a second embodiment of the automatic needle pitch adjusting mechanism in the present application.
Fig. 6 is an enlarged view of circle B of fig. 5.
Fig. 7 is a schematic structural view of the pitch adjustment cam of fig. 5.
Description of the element reference numerals
10 spindle
20 feeding shaft
30 first feeding transmission assembly
31 swing seat
32 feeding eccentric wheel
33 feeding connecting rod
34 first swing arm
35 second swing arm
36 feeding driving crank
40 second feed drive assembly
50-stitch-length adjusting driving source
60 gauge adjustment transmission assembly
61 needle pitch adjusting cam
611 needle pitch adjusting groove
612 reducing driving surface
613 cam connecting part
614 cam driving part
62 gauge crank
63 drive pin shaft
64 gauge adjusting shaft
65 pretension spring
70 lifting tooth shaft
80 first tooth lifting transmission component
90 second feed dog transmission assembly
110 dental articulator
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.
In the following examples, the directions are defined as follows: the width direction of the sewing machine is defined as the front-back direction, the length direction of the sewing machine is defined as the left-right direction, the height direction of the sewing machine is defined as the up-down direction, the direction towards the head of the sewing machine is the left direction, and the direction towards the tail of the sewing machine is the right direction.
The application provides a sewing machine, this sewing machine has feeding mechanism. As shown in fig. 2 or 5, the feeding mechanism in the sewing machine includes a main shaft 10 driven by a main motor to rotate, a feed lifting tooth shaft 70 parallel to the main shaft 10, a feed shaft 20 parallel to the main shaft 10, a tooth frame 110, feed lifting teeth fixed to the tooth frame 110, a first feed lifting tooth transmission assembly 80 connected between the main shaft 10 and the feed lifting tooth shaft 70, a second feed lifting tooth transmission assembly 90 connected between the feed lifting tooth shaft 70 and the rear end of the tooth frame 110, a first feed transmission assembly 30 connected between the main shaft 10 and the feed shaft 20, and a second feed transmission assembly 40 connected between the feed shaft 20 and the front end of the tooth frame 110. When the sewing machine sews, the main motor drives the main shaft 10 to rotate, the main shaft 10 drives the feed lifting tooth shaft 70 to swing around the axis of the main shaft 10 through the first feed lifting tooth transmission assembly 80, and the feed lifting tooth shaft 70 drives the tooth frame 110 and the feed lifting tooth to reciprocate up and down through the second feed lifting tooth transmission assembly 90; meanwhile, the main shaft 10 drives the feeding shaft 20 to swing around the axis of the main shaft through the first feeding transmission assembly 30, and the feeding shaft 20 drives the tooth frame 110 and the feeding teeth to reciprocate back and forth through the second feeding transmission assembly 40. Therefore, the feeding teeth do composite motion of up-and-down reciprocating motion and front-and-back reciprocating motion, the motion track is similar to an ellipse, and the sewing material is transferred in the front-and-back direction.
Further, in the sewing machine, the first feed transmission assembly 30 preferably has the following structure: as shown in fig. 2 or 5, the first feeding transmission assembly 30 further includes a feeding eccentric wheel 32 fixed on the main shaft 10, a feeding connecting rod 33, a first swing arm 34 located outside a lower end of the feeding connecting rod 33, a second swing arm 35 located outside the first swing arm 34, and a feeding driving crank 36 fixed on the feeding shaft 20, the second swing arm 35 is located in the swing seat 31, an upper end of the feeding connecting rod 33 is rotatably sleeved on an outer periphery of the feeding eccentric wheel 32, a lower end of the feeding connecting rod 33, a rear end of the first swing arm 34, and a rear end of the second swing arm 35 are coaxially hinged, a front end of the first swing arm 34 is hinged to the feeding driving crank 36, and a front end of the second swing arm 35 is hinged to the swing seat 31.
Furthermore, an automatic needle pitch adjusting mechanism is further installed in the sewing machine and used for adjusting the needle pitch of the sewing machine. As shown in fig. 2 or fig. 5, the automatic needle pitch adjusting mechanism includes the spindle 10, the feeding shaft 20, the first feeding transmission assembly 30, a needle pitch adjusting driving source 50, and a needle pitch adjusting transmission assembly 60, wherein the swing base 31 of the first feeding transmission assembly 30 has a fixed swing axis, and the needle pitch adjusting driving source 50 is connected to the swing base 31 through the needle pitch adjusting transmission assembly 60; when the needle pitch is not adjusted in normal sewing, the needle pitch adjusting drive source 50 does not act, so the swinging seat 31 is not moved; when the needle pitch adjusting driving source 50 acts, the needle pitch adjusting driving source 50 drives the swing seat 31 to rotate around the fixed swing axis of the needle pitch adjusting transmission assembly 60, and the swing amplitude of the spindle 10 for driving the feeding shaft 20 to swing through the first feeding transmission assembly 30 is changed, so that the stroke of the spindle 10 for driving the feeding teeth to reciprocate back and forth through the first feeding transmission assembly 30, the feeding shaft 20 and the second feeding transmission assembly 40 is changed, and the needle pitch of the sewing machine is further changed. Therefore, the invention realizes the automatic adjustment and diversification of the stitch length by controlling the output of the stitch length adjusting driving source 50 to automatically adjust the stitch length, and has convenient, efficient and accurate operation, thereby improving the stitch aesthetic degree and providing the sewing quality. Preferably, the needle pitch adjusting driving source 50 is a driving motor fixed on the bottom surface of the table of the sewing machine, the driving motor is a stepping motor, the driving motor is connected with an electronic control module of the sewing machine, and the electronic control module controls the output of the driving motor to realize digital control.
Two preferred embodiments of the automatic gauge adjustment mechanism are provided below.
As shown in fig. 2 to 4, a needle pitch adjusting transmission assembly 60 of the first embodiment of the needle pitch adjusting mechanism includes a needle pitch adjusting cam 61, a needle pitch adjusting crank 62, a transmission pin 63, and a needle pitch adjusting shaft 64 parallel to the feeding shaft 20, wherein a lower section of the needle pitch adjusting cam 61 is a cam connecting portion 613, an upper section of the needle pitch adjusting cam is a cam driving portion 614, and the cam connecting portion 613 of the needle pitch adjusting cam 61 is fixed to an output shaft of the needle pitch adjusting drive source 50 by a screw, so that the needle pitch adjusting cam 61 is driven to rotate by the needle pitch adjusting drive source 50; a needle pitch adjusting groove 611 is formed on the left side surface of the cam driving part 614 of the needle pitch adjusting cam 61 facing the needle pitch adjusting crank 62; the transmission pin shaft 63 extends left and right, the right section of the transmission pin shaft 63 is in transmission fit with the needle pitch adjusting groove 611 and can move relative to the needle pitch adjusting groove 611 along the extending direction of the needle pitch adjusting groove 611, the peripheral surface of the transmission pin shaft 63 is in line contact with the groove wall of the needle pitch adjusting groove 611, and the left section of the transmission pin shaft 63 is fixed at one end of the needle pitch adjusting crank 62; the other end of the needle pitch adjusting crank 62 is fixed with the right end of the needle pitch adjusting shaft 64 through a screw; the needle pitch adjusting shaft 64 is fixed at the left end to the swing base 31.
When the electronic control module sends an instruction signal to the needle pitch adjusting driving source 50, the output shaft of the needle pitch adjusting driving source 50 rotates by a corresponding angle, the needle pitch adjusting driving source 50 drives the needle pitch adjusting cam 61 to rotate, and the swinging seat 31 swings up and down around the central axis of the needle pitch adjusting shaft 64 through the transmission of a series of forces of the needle pitch adjusting groove 611, the transmission pin shaft 63, the needle pitch adjusting crank 62 and the needle pitch adjusting shaft 64, so that the swinging amplitude of the main shaft 10 driving the feeding shaft 20 to swing through the first feeding transmission assembly 30 is changed, and the effect of automatically adjusting the needle pitch is achieved. Therefore, the center axis of the needle pitch adjusting shaft 64 is a fixed swing axis of the swing base 31. The stitch length of the sewing machine can be automatically adjusted in the sewing process by controlling the output of the stepping motor forming the stitch length adjusting drive source 50 through a program, and the sewing machine has the advantages of high efficiency and accuracy.
As shown in fig. 4, the needle pitch adjusting groove 611 is a segment of a circular arc groove, and the circular arc groove is concave downward. Meanwhile, the middle position of the needle pitch adjustment groove 611 is the lowest point of the needle pitch adjustment groove 611; when the driving pin 63 is located at the lowest point of the needle pitch adjusting groove 611, the swing seat 31 tends to be horizontal at this time, the needle pitch of the sewing machine is zero, otherwise, the needle pitch becomes large. When the transmission pin shaft 63 fixed at one end of the needle pitch adjusting crank 62 moves to the extreme positions at the two ends of the needle pitch adjusting groove 611, the stepping motor blocks the rotation, and the electronic control module automatically identifies errors, so that the needle pitch is prevented from being excessively adjusted. The application can realize that the transmission pin shaft 63 stays at any position of the needle pitch adjusting groove 611, thereby realizing that the needle pitch has diversity in an adjustable range.
As shown in fig. 5 to 7, the needle pitch adjusting transmission assembly 60 of the second embodiment of the needle pitch automatic adjusting mechanism includes a needle pitch adjusting cam 61, a needle pitch adjusting crank 62, a transmission pin 63, and a needle pitch adjusting shaft 64 parallel to the feeding shaft 20, wherein the needle pitch adjusting cam 61 is fixed to the output shaft of the needle pitch adjusting drive source 50 by a screw, so that the needle pitch adjusting cam 61 is driven to rotate by the needle pitch adjusting drive source 50; the outer peripheral surface of the needle pitch adjusting cam 61 is provided with a reducing driving surface 612; the transmission pin shaft 63 extends left and right, the right section of the transmission pin shaft 63 is abutted and tangent with the variable diameter driving surface 612 of the needle pitch adjusting cam 61, and the left section of the transmission pin shaft 63 is fixed at one end of the needle pitch adjusting crank 62; the other end of the needle pitch adjusting crank 62 is fixed with the right end of the needle pitch adjusting shaft 64 through a screw; the needle pitch adjusting shaft 64 is fixed at the left end to the swing base 31.
When the electronic control module sends an instruction signal to the needle pitch adjusting driving source 50, the output shaft of the needle pitch adjusting driving source 50 rotates by a corresponding angle, the needle pitch adjusting driving source 50 drives the needle pitch adjusting cam 61 to rotate, and the swinging seat 31 swings up and down around the central axis of the needle pitch adjusting shaft 64 through the transmission of a series of forces of the reducing driving surface 612, the transmission pin shaft 63, the needle pitch adjusting crank 62 and the needle pitch adjusting shaft 64, so that the swinging amplitude of the main shaft 10 driving the feeding shaft 20 to swing through the first feeding transmission assembly 30 is changed, and the effect of automatically adjusting the needle pitch is achieved. Therefore, the center axis of the needle pitch adjusting shaft 64 is a fixed swing axis of the swing base 31. The stitch length of the sewing machine can be automatically adjusted in the sewing process by controlling the output of the stepping motor forming the stitch length adjusting drive source 50 through a program, and the sewing machine has the advantages of high efficiency and accuracy. In addition, when the driving pin 63 is located at the middle position of the stroke of the variable diameter driving surface 612, at this time, the swinging seat 31 tends to be horizontal, the needle pitch of the sewing machine is zero, and conversely, the needle pitch becomes large.
As shown in fig. 6, the needle pitch adjusting transmission assembly 60 further includes a pre-tightening spring 65 sleeved on the needle pitch adjusting shaft 64, one end of the pre-tightening spring 65 is connected to the needle pitch adjusting crank 62, and the pre-tightening spring 65 applies a force tangential to the variable diameter driving surface 612 of the needle pitch adjusting cam 61 to the needle pitch adjusting crank 62, so that the transmission pin 63 fixed at one end of the needle pitch adjusting crank 62 is tightly attached to the variable diameter driving surface 612 of the needle pitch adjusting cam 61, and the accuracy of needle pitch adjustment is ensured.
In other embodiments of the automatic needle pitch adjusting mechanism, the needle pitch adjusting transmission assembly 60 may adopt a pulley transmission form, a gear transmission form, etc. to drive the needle pitch adjusting shaft 64 to rotate, so as to achieve the purpose of automatically adjusting the needle pitch.
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 (6)
1. The utility model provides a gauge needle automatically regulated mechanism, includes parallel arrangement's main shaft (10) and pay-off axle (20) and connects first pay-off drive assembly (30) between main shaft (10) and pay-off axle (20), its characterized in that: the automatic needle pitch adjusting mechanism further comprises a needle pitch adjusting driving source (50) and a needle pitch adjusting transmission assembly (60), the first feeding transmission assembly (30) comprises a swinging seat (31) with a fixed swinging axis, and the needle pitch adjusting driving source (50) is connected with the swinging seat (31) through the needle pitch adjusting transmission assembly (60); the needle distance adjusting transmission assembly (60) comprises a needle distance adjusting cam (61) driven by a needle distance adjusting driving source (50) to rotate, a needle distance adjusting crank (62), a transmission pin shaft (63) fixed at one end of the needle distance adjusting crank (62), and a needle distance adjusting shaft (64) parallel to the feeding shaft (20), wherein a variable diameter driving surface (612) is arranged on the peripheral surface of the needle distance adjusting cam (61), the transmission pin shaft (63) is abutted against the variable diameter driving surface (612), one end of the needle distance adjusting shaft (64) is fixed at the other end of the needle distance adjusting crank (62), the other end of the needle distance adjusting shaft (64) is fixed on the swinging seat (31), and the central axis of the needle distance adjusting shaft (64) is a fixed swinging axis of the swinging seat (31); when the needle pitch adjusting driving source (50) acts, the needle pitch adjusting driving source (50) drives the needle pitch adjusting cam (61) to rotate, the swinging seat (31) rotates around the fixed swinging axis of the swinging seat through the reducing driving surface (612), the transmission pin shaft (63), the needle pitch adjusting crank (62) and the needle pitch adjusting shaft (64), and the swinging amplitude of the main shaft (10) which drives the feeding shaft (20) to swing through the first feeding transmission assembly (30) is changed.
2. The automatic gauge adjusting mechanism according to claim 1, wherein: the needle pitch adjusting transmission assembly (60) further comprises a pre-tightening spring (65) sleeved on the needle pitch adjusting shaft (64), one end of the pre-tightening spring (65) is connected with the needle pitch adjusting crank (62) to enable the transmission pin shaft (63) to cling to the variable-diameter driving surface (612) of the needle pitch adjusting cam (61).
3. The automatic gauge adjusting mechanism according to claim 1, wherein: when the transmission pin shaft (63) is positioned at the middle position of the variable diameter driving surface (612), the needle pitch of the sewing machine is zero.
4. The automatic gauge adjusting mechanism according to claim 1, wherein: the needle pitch adjusting drive source (50) is a drive motor and is fixed on the bottom surface of a table plate of the sewing machine, and the drive motor is a stepping motor.
5. The automatic gauge adjusting mechanism according to claim 1, wherein: first pay-off drive assembly (30) are still including fixing pay-off eccentric wheel (32), pay-off connecting rod (33) on main shaft (10), be located pay-off connecting rod (33) lower extreme outside first swing arm (34), be located first swing arm (35) outside first swing arm (34) and be fixed in pay-off axle (20) pay-off drive crank (36), second swing arm (35) are located swing seat (31), the periphery at pay-off eccentric wheel (32) is rotationally the suit to the upper end of pay-off connecting rod (33), the lower extreme of pay-off connecting rod (33), the one end of first swing arm (34) and the one end coaxial hinge of second swing arm (35), the other end and the pay-off drive crank (36) of first swing arm (34) are articulated, the other end and the swing seat (31) of second swing arm (35) are articulated.
6. A sewing machine characterized by: the sewing machine is provided with the automatic needle pitch adjusting mechanism of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811350760.XA CN109208188B (en) | 2018-11-14 | 2018-11-14 | Automatic needle pitch adjusting mechanism and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811350760.XA CN109208188B (en) | 2018-11-14 | 2018-11-14 | Automatic needle pitch adjusting mechanism and sewing machine |
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| Publication Number | Publication Date |
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| CN109208188A CN109208188A (en) | 2019-01-15 |
| CN109208188B true CN109208188B (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811350760.XA Active CN109208188B (en) | 2018-11-14 | 2018-11-14 | Automatic needle pitch adjusting mechanism and sewing machine |
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| CN (1) | CN109208188B (en) |
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|---|---|---|---|---|
| CN111501225B (en) * | 2019-01-31 | 2022-01-04 | 浙江杰克智能缝制科技有限公司 | Thread trimming and presser foot lifting and needle sealing device of sewing machine and sewing machine |
| CN111501222B (en) * | 2019-01-31 | 2021-12-21 | 浙江杰克智能缝制科技有限公司 | Thread trimming and stitch length adjusting device of sewing machine and sewing machine |
| CN109706629A (en) * | 2019-02-22 | 2019-05-03 | 浙江美机缝纫机有限公司 | The sewing length adjustment device of sewing machine |
| CN109881376B (en) * | 2019-03-18 | 2021-04-27 | 拓卡奔马机电科技有限公司 | Needle pitch adjusting device and operating method thereof |
| CN112048838B (en) * | 2019-06-05 | 2022-02-22 | 杰克科技股份有限公司 | Sewing machine |
| CN110130003A (en) * | 2019-06-27 | 2019-08-16 | 廊坊市东平汽车零配件有限公司 | A kind of application method of sewing machine and sewing machine |
| CN110485065A (en) * | 2019-09-10 | 2019-11-22 | 杰克缝纫机股份有限公司 | A kind of needle gage adjustment structure of sewing machine |
| CN112626737B (en) * | 2019-09-24 | 2022-04-01 | 杰克科技股份有限公司 | Transmission clutch mechanism and sewing machine |
| TWI775018B (en) * | 2019-09-24 | 2022-08-21 | 啟翔股份有限公司 | Differential feeding lasting machine |
| CN112626730B (en) * | 2019-09-24 | 2021-12-28 | 杰克缝纫机股份有限公司 | Sewing machine |
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| US3954071A (en) * | 1973-12-10 | 1976-05-04 | Firma Pfaff Industriemaschinen Gmbh | Sewing machine having top and bottom feed synchronizing means |
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| Publication number | Publication date |
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| CN109208188A (en) | 2019-01-15 |
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Address after: 318010 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. |