CN110359192A - Thread shearing device of sewing machine - Google Patents
Thread shearing device of sewing machine Download PDFInfo
- Publication number
- CN110359192A CN110359192A CN201910614397.6A CN201910614397A CN110359192A CN 110359192 A CN110359192 A CN 110359192A CN 201910614397 A CN201910614397 A CN 201910614397A CN 110359192 A CN110359192 A CN 110359192A
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- CN
- China
- Prior art keywords
- traction piece
- sewing machine
- shearing device
- rotating shuttle
- pedestal
- 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.)
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
A kind of thread shearing device of sewing machine, comprising: pedestal, the driving mechanism being mounted on the pedestal, the traction piece for connecting the driving mechanism, the tangent mechanism for connecting the driving mechanism, the inflatable body for connecting the traction piece, the rotating shuttle being arranged in the tangent mechanism and baseline detection sensor corresponding with the rotating shuttle；The traction piece is equipped with movable end, and the driving mechanism drives the movable end of the traction piece around predetermined axis swing；The inflatable body generates high pressure draught under the drive of the traction piece, and blows to region between the baseline detection sensor and rotating shuttle；Inflatable body operation is driven while driving tangent mechanism operation by driving mechanism, inflatable body is set to export high pressure draught, by near tangent mechanism knitting wool or grease blow away, thus achieve the effect that voluntarily generate high pressure draught, can more easily using air flow cleaning accumulation knitting wool or grease.
Description
Technical field
The present invention relates to technical field of sewing machines, more particularly to a kind of thread shearing device of sewing machine.
Background technique
Sewing machine is during sewing, since rotating shuttle nearby needs often to carry out trimming processing, in rotating shuttle or trimming
Knife is nearby easy to produce the accumulation of line hair, and the accumulation of knitting wool or greasy dirt will affect the fluency of sewing machine operation or sensor caused to examine
Dendrometry spirit；Traditional processing mode be periodically blown using external gas source to cutting facility or rotating shuttle relevant range, however
The processing mode needs to produce occasion and is equipped with individual air machinery, therefore is inconvenient to realize to blow and disperses the knitting wool or oil of accumulation
It is dirty.
Summary of the invention
Based on this, it is necessary to which needle provides a kind of thread shearing device of sewing machine that can voluntarily generate air blowing air-flow.
A kind of thread shearing device of sewing machine, comprising: pedestal, the driving mechanism being mounted on the pedestal, the connection driving
The traction piece of mechanism, the tangent mechanism of the connection driving mechanism, the inflatable body of the connection traction piece, setting are cut described
Rotating shuttle and baseline detection sensor corresponding with the rotating shuttle in line mechanism；The traction piece is equipped with movable end, the drive
Motivation structure drives the movable end of the traction piece around predetermined axis swing；The inflatable body produces under the drive of the traction piece
Raw high pressure draught, and blow to region between the baseline detection sensor and rotating shuttle.
Above-mentioned thread shearing device of sewing machine drives inflatable body fortune by driving mechanism while driving tangent mechanism operation
Row makes inflatable body export high pressure draught, the knitting wool of areas adjacent or grease between baseline detection sensor and rotating shuttle is blown away,
To achieve the effect that voluntarily to generate high pressure draught, the knitting wool or grease of air flow cleaning accumulation can be more easily utilized.
The inflatable body includes the push rod for connecting the movable end of the traction piece, is arranged in one of the embodiments,
In the tracheae of sleeve, the piston plate and the connection sleeve that are accommodated in the sleeve on the push rod；The push rod and institute
State piston plate connection；The side of the sleeve and the piston plate cooperatively form closing chamber, and the air inlet of the tracheae is connected to
The closing chamber；The gas outlet of the tracheae is correspondingly arranged with the tangent mechanism.
The inflatable body further includes being connected between the traction piece and the push rod in one of the embodiments,
Air blowing connecting rod；One end of the air blowing connecting rod and the movable end of the traction piece are pivotally connected, the other end of the air blowing connecting rod and institute
State push rod pivot joint.
The driving mechanism includes lower axle, the trimming cam being set in the lower axle, turns in one of the embodiments,
The dynamic tangential cam crank being arranged on the pedestal connects the offset component of the tangential cam crank and is rotatably arranged on institute
State the shaft on pedestal；The trimming cam is correspondingly arranged with the tangential cam crank；The tangential cam crank passes through institute
It states offset component and drives the shaft deflection；The traction piece fixation is set in the shaft.
It is convex to be equipped with corresponding with the trimming cam first for the tangential cam crank in one of the embodiments,
Block and the second convex block corresponding with the shaft；The offset component include connect the roller end connecting shaft block and with institute
State the sliding block of the second convex block pivot joint；The connecting shaft block is equipped with sliding slot, and the sliding block is accommodated in the sliding slot；The sliding slot edge
The shaft radially extends.
The rotating shuttle includes bobbin case in one of the embodiments, and the bobbin case is equipped with opening；Going out on the tracheae
Port is correspondingly arranged with the opening on the rotating shuttle.
The rotating shuttle further includes the peg or spindle being mounted in the bobbin case in one of the embodiments,.
The detection mouth of the baseline detection sensor is corresponding with the opening of the rotating shuttle in one of the embodiments, sets
It sets；The peg or spindle is equipped with light hole corresponding with the opening of the bobbin case.
The tangent mechanism includes connecting with the trimming of the movable end of traction piece pivot joint in one of the embodiments,
The active cutting knife of bar, the tangent line main carriage being rotatably arranged on the pedestal and the connection tangent line main carriage；The trimming connects
Bar and the tangent line main carriage are pivotally connected.
In one of the embodiments, the tangent mechanism further include with the relatively-stationary auxiliary crank of the traction piece,
The auxiliary cutter of the auxiliary knife rest of the tangent line being rotatably arranged on the pedestal and the connection auxiliary knife rest of tangent line；The auxiliary crank with
The auxiliary knife rest of tangent line is flexibly connected；The auxiliary cutter is correspondingly arranged with the active cutting knife.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of the thread shearing device of sewing machine of a preferred embodiment of the invention；
Fig. 2 is stereoscopic schematic diagram of the thread shearing device of sewing machine shown in FIG. 1 after hiding pedestal；
Fig. 3 is the decomposition diagram of the driving mechanism in Fig. 2；
Fig. 4 is the decomposition diagram of the inflatable body in Fig. 2；
Fig. 5 is stereoscopic schematic diagram of the thread shearing device of sewing machine shown in Fig. 2 after separating peg or spindle；
Fig. 6 is the stereoscopic schematic diagram of thread shearing device of sewing machine shown in Fig. 2 another angle after separating peg or spindle.
Specific embodiment
It to facilitate the understanding of the present invention, below will be to invention is more fully described.But the present invention can be to be permitted
Mostly different form is realized, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes
It is more thorough and comprehensive to the understanding of the disclosure.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
Fig. 1 to Fig. 6 is please referred to, for the thread shearing device of sewing machine 100 of a better embodiment of the invention, is used for sewing machine
Trimming processing.The thread shearing device of sewing machine 100 includes pedestal 20, the driving mechanism 30 being mounted on the pedestal 20, connection
The traction piece 40 of the driving mechanism 30, connects blowing for the traction piece 40 at the tangent mechanism 50 for connecting the driving mechanism 30
Mechanism of qi structure 60, the rotating shuttle 70 being arranged in the tangent mechanism 50 and baseline detection sensor 80 corresponding with the rotating shuttle 70；
The traction piece 40 is equipped with movable end 41, and the driving mechanism 30 drives the movable end 41 of the traction piece 40 around predetermined axle center
It swings；The inflatable body 60 generates high pressure draught under the drive of the traction piece 40, and blows to the baseline detection sensing
Region between device 80 and rotating shuttle 70.
It drives inflatable body 60 to run while driving tangent mechanism 50 to run by driving mechanism 30, makes inflatable body
60 output high pressure draughts, the knitting wool of areas adjacent or grease between baseline detection sensor 80 and rotating shuttle 70 are blown away, to reach
To the effect for voluntarily generating high pressure draught, the knitting wool or grease of air flow cleaning accumulation can be more easily utilized.
Fig. 1 and Fig. 3 is please referred to, driving mechanism 30 is set including lower axle 31, the trimming cam 32 being set in lower axle 31, rotation
The tangential cam crank 33 on pedestal 20 is set, the offset component 34 of tangential cam crank 33 is connected and is rotatably arranged on pedestal 20
On shaft 35；Trimming cam 32 is correspondingly arranged with tangential cam crank 33；Tangential cam crank 33 is driven by offset component 34
Turn axis 35 deflects；The fixation of traction piece 40 is set in shaft 35.
Tangential cam crank 33 is equipped with and corresponding first convex block 331 of trimming cam 32 and corresponding with shaft 35 the
Two convex blocks 332；Offset component 34 includes the connecting shaft block 341 of connection 35 end of shaft and the sliding block with the pivot joint of the second convex block 332
342；Connecting shaft block 341 is equipped with sliding slot 343, and sliding block 342 is accommodated in sliding slot 343；Sliding slot 343 is radially extended along shaft 35.
When needing to carry out trimming operation, external impetus mechanism drives lower axle 31 to rotate, and lower axle 31 is made to drive trimming cam
32 rotations, trimming cam 32 push tangential cam crank 33 to deflect, and tangential cam crank 33 is deflected through the biography of offset component 34
It is handed to shaft 35, shaft 35 is enabled to generate rotation, traction piece 40 is axle center synchronous rotation with shaft 35.
Trimming cam 32 drives the whole deflection of tangential cam crank 33 by the first convex block 331, due to sliding block 342 and second
Convex block 332 is pivotally connected, and sliding block 342 is accommodated in sliding slot 343, so as to drive shaft 35 to rotate；Specifically, to keep shaft 35 suitable
Smooth rotation, driving mechanism 30 further includes the axle sleeve 36 being mounted on pedestal 20, and 35 activity of shaft is threaded through in axle sleeve 36；To make to cut
Line cam crank 33 is rotatably installed on pedestal 20, and driving mechanism 30 further includes the carrying axle 37 being mounted on pedestal 20, carrying
Axis 37 is threaded through in tangential cam crank 33.
Tangent mechanism 50 includes the trimming connecting rod 51 being pivotally connected with the movable end 41 of traction piece 40, is rotatably arranged on pedestal 20
Tangent line main carriage 52 and connect tangent line main carriage 52 active cutting knife 53；Trimming connecting rod 51 and tangent line main carriage 52 are pivotally connected；It cuts
Line mechanism 50 further includes and the relatively-stationary auxiliary crank 54 of traction piece 40, the auxiliary knife rest 55 of tangent line being rotatably arranged on pedestal 20
And the auxiliary cutter 56 of the connection auxiliary knife rest 55 of tangent line；Auxiliary crank 54 is flexibly connected with the auxiliary knife rest 55 of tangent line；Assist cutter 56 with
Active cutting knife 53 is correspondingly arranged.
When the movable end 41 of traction piece 40 is swung, traction piece 40 drives 52 turns of tangent line main carriage by trimming connecting rod 51
It is dynamic, enable active cutting knife 53 be offset to predetermined position, it is corresponding with the line segment for needing to cut.
When traction piece 40 is swung, auxiliary crank 54 is rotated synchronously, and auxiliary crank 54 and the auxiliary knife rest 55 of tangent line pass through pivot pin
Part linkage so that the auxiliary knife rest 55 of tangent line be driven to rotate, and assists cutter 56 opposite with the rotation direction of active cutting knife 53.
Please refer to Fig. 2 and Fig. 4, inflatable body 60 includes the push rod 61 of the movable end 41 of connection traction piece 40, is set in and pushes away
The tracheae 64 of sleeve 62, the piston plate 63 and connection sleeve 62 that are accommodated in sleeve 62 on bar 61；Push rod 61 and piston plate 63
Connection；The side of sleeve 62 and piston plate 63 cooperatively form closing chamber, and the air inlet 641 of tracheae 64 is connected to closing chamber；Tracheae
64 gas outlet 642 is correspondingly arranged with tangent mechanism 50；Inflatable body 60 further includes being connected between traction piece 40 and push rod 61
Air blowing connecting rod 65；The movable end 41 of one end of air blowing connecting rod 65 and traction piece 40 is pivotally connected, the other end of air blowing connecting rod 65 with push away
Bar 61 is pivotally connected.
When push rod 61 pushes piston plate 63 to push to the wherein side of sleeve 62, the volume of closing chamber is reduced, and is being closed
Intracavitary formation hyperbaric environment, gas compressed enter tracheae 64, and attached to tangent mechanism 50 from the output of 64 gas outlet 642 of tracheae
Closely.
During the movable end 41 of traction piece 40 is along arc swing, by the transmitting of air blowing connecting rod 65, push rod 61 is enabled
It can keep moving linearly；In the present embodiment, push rod 61 is through closing chamber, to avoid the movement of piston plate 63 by external shadow
It rings, sleeve 62 is connected with cover board 66 far from one end of closing chamber, and cover board 66 is equipped with venthole 660.
Fig. 2, Fig. 5 and Fig. 6 are please referred to, rotating shuttle 70 includes bobbin case 71, and bobbin case 71 is equipped with opening 710；Going out on tracheae 64
Port 642 is correspondingly arranged with the opening 710 on rotating shuttle 70.Rotating shuttle 70 further includes the peg or spindle 72 being mounted in bobbin case 71.
Specifically, bobbin case 71 is mounted on 31 end of lower axle, so as to follow lower axle 31 to rotate.
The detection mouth 81 of baseline detection sensor 80 is correspondingly arranged with the opening 710 of rotating shuttle 70；Peg or spindle 72 is equipped with and shuttle
The corresponding light hole 720 of opening 710 of shell 71；
Baseline detection sensor 80 generates detection light, and detection light passes through on opening 710 and peg or spindle 72 on bobbin case 71
Light hole 720 enter in peg or spindle 72, the detection light reflected by receiving peg or spindle 72 can confirm that baseline on peg or spindle 72 is remaining
Amount.
In the present embodiment, inflatable body operation is driven while driving tangent mechanism operation by driving mechanism, makes to blow
Mechanism of qi structure exports high pressure draught, the knitting wool of areas adjacent or grease between baseline detection sensor and rotating shuttle is blown away, to reach
To the effect for voluntarily generating high pressure draught, the knitting wool or grease of air flow cleaning accumulation can be more easily utilized.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of thread shearing device of sewing machine characterized by comprising pedestal (20), the driving being mounted on the pedestal (20)
Mechanism (30), the traction piece (40) of the connection driving mechanism (30), the connection driving mechanism (30) tangent mechanism (50),
Connect the inflatable body (60) of the traction piece (40), rotating shuttle (70) in the tangent mechanism (50) is set and with it is described
The corresponding baseline detection sensor (80) of rotating shuttle (70)；The traction piece (40) is equipped with movable end (41), the driving mechanism
(30) drive the movable end (41) of the traction piece (40) around predetermined axis swing；The inflatable body (60) is in the traction piece
(40) high pressure draught is generated under drive, and blows to region between the baseline detection sensor (80) and rotating shuttle (70).
2. thread shearing device of sewing machine according to claim 1, which is characterized in that the inflatable body (60) includes connection institute
The push rod (61) for stating the movable end (41) of traction piece (40), the sleeve (62) being set on the push rod (61), be accommodated in it is described
The tracheae (64) of piston plate (63) and the connection sleeve (62) in sleeve (62)；The push rod (61) and the piston plate
(63) it connects；The side and the piston plate (63) of the sleeve (62) cooperatively form closing chamber, the air inlet of the tracheae (64)
Mouth (641) is connected to the closing chamber；The gas outlet (642) of the tracheae (64) is correspondingly arranged with the tangent mechanism (50).
3. thread shearing device of sewing machine according to claim 2, which is characterized in that the inflatable body (60) further includes connection
Air blowing connecting rod (65) between the traction piece (40) and the push rod (61)；One end of the air blowing connecting rod (65) with it is described
The movable end (41) of traction piece (40) is pivotally connected, and the other end of the air blowing connecting rod (65) and the push rod (61) are pivotally connected.
4. thread shearing device of sewing machine according to claim 1, which is characterized in that the driving mechanism (30) includes lower axle
(31), the trimming cam (32) being set on the lower axle (31), the tangential cam song being rotatably arranged on the pedestal (20)
Handle (33), the offset component (34) for connecting the tangential cam crank (33) and the shaft being rotatably arranged on the pedestal (20)
(35)；The trimming cam (32) is correspondingly arranged with the tangential cam crank (33)；The tangential cam crank (33) passes through
The offset component (34) drives shaft (35) deflection；Traction piece (40) fixation is set on the shaft (35).
5. thread shearing device of sewing machine according to claim 4, which is characterized in that the tangential cam crank (33) is equipped with
And trimming cam (32) corresponding first convex block (331) and the second convex block corresponding with the shaft (35) (332)；Institute
Stating offset component (34) includes connecting the connecting shaft block (341) of shaft (35) end and being pivotally connected with second convex block (332)
Sliding block (342)；The connecting shaft block (341) is equipped with sliding slot (343), and the sliding block (342) is accommodated in the sliding slot (343)
In；Sliding slot (343) the radially extending along the shaft (35).
6. thread shearing device of sewing machine according to claim 2, which is characterized in that the rotating shuttle (70) includes bobbin case (71),
The bobbin case (71) is equipped with opening (710)；The opening on gas outlet (642) and the rotating shuttle (70) on the tracheae (64)
(710) it is correspondingly arranged.
7. thread shearing device of sewing machine according to claim 6, which is characterized in that the rotating shuttle (70) further includes being mounted on institute
State the peg or spindle (72) in bobbin case (71).
8. according to thread shearing device of sewing machine described in claim (7), which is characterized in that；The baseline detection sensor (80)
Detection mouth (81) and the opening (710) of the rotating shuttle (70) be correspondingly arranged；The peg or spindle (72) is equipped with and the bobbin case
(71) the corresponding light hole (720) of opening (710).
9. thread shearing device of sewing machine according to claim 1, which is characterized in that the tangent mechanism (50) include with it is described
The trimming connecting rod (51) of movable end (41) pivot joint of traction piece (40), the tangent line main carriage being rotatably arranged on the pedestal (20)
(52) and the active cutting knife (53) of the connection tangent line main carriage (52)；The trimming connecting rod (51) and the tangent line main carriage
(52) it is pivotally connected.
10. thread shearing device of sewing machine according to claim 9, which is characterized in that the tangent mechanism (50) further include with
The relatively-stationary auxiliary crank of the traction piece (40) (54), the auxiliary knife rest of tangent line (55) being rotatably arranged on the pedestal (20)
And the auxiliary cutter (56) of the connection auxiliary knife rest of tangent line (55)；The auxiliary crank (54) and the auxiliary knife rest of the tangent line (55) are living
Dynamic connection；The auxiliary cutter (56) is correspondingly arranged with the active cutting knife (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614397.6A CN110359192B (en) | 2019-07-09 | 2019-07-09 | Thread cutting device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614397.6A CN110359192B (en) | 2019-07-09 | 2019-07-09 | Thread cutting device of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110359192A true CN110359192A (en) | 2019-10-22 |
| CN110359192B CN110359192B (en) | 2021-03-16 |
Family
ID=68218285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910614397.6A Active CN110359192B (en) | 2019-07-09 | 2019-07-09 | Thread cutting device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110359192B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191505616A (en) * | 1915-04-14 | 1915-07-29 | Wallace Fairweather | Thread Cutting Mechanism for Sewing Machines. |
| US3665878A (en) * | 1970-12-18 | 1972-05-30 | Teledyne Inc | Thread trimmer for blind stitch sewing machine |
| US3710743A (en) * | 1971-06-27 | 1973-01-16 | Singer Co | Thread-cutting mechanism for sewing machines |
| US6131527A (en) * | 1999-03-08 | 2000-10-17 | Park; Jong Rak | Vacuum box for use with overlock sewing machines |
| CN101446006A (en) * | 2007-11-26 | 2009-06-03 | 王国秋 | Front and rear automatic shear line device of overedger sewing products |
| CN201704531U (en) * | 2010-02-25 | 2011-01-12 | 钱谷兰 | Embroidery machine scissors dust removing mechanism |
| TW201317416A (en) * | 2011-10-21 | 2013-05-01 | Fei-Long Gu | Thread automatically cutting machine for an overlock sewing machine |
| CN207062543U (en) * | 2017-06-12 | 2018-03-02 | 安徽天使服装服饰有限责任公司 | A kind of trimming structure of eyelet buttonhole sewing machine |
| CN109972311A (en) * | 2019-05-11 | 2019-07-05 | 温州庄吉服饰有限公司 | A kind of overseam device with dedusting cutting function |
-
2019
- 2019-07-09 CN CN201910614397.6A patent/CN110359192B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191505616A (en) * | 1915-04-14 | 1915-07-29 | Wallace Fairweather | Thread Cutting Mechanism for Sewing Machines. |
| US3665878A (en) * | 1970-12-18 | 1972-05-30 | Teledyne Inc | Thread trimmer for blind stitch sewing machine |
| US3710743A (en) * | 1971-06-27 | 1973-01-16 | Singer Co | Thread-cutting mechanism for sewing machines |
| US6131527A (en) * | 1999-03-08 | 2000-10-17 | Park; Jong Rak | Vacuum box for use with overlock sewing machines |
| CN101446006A (en) * | 2007-11-26 | 2009-06-03 | 王国秋 | Front and rear automatic shear line device of overedger sewing products |
| CN201704531U (en) * | 2010-02-25 | 2011-01-12 | 钱谷兰 | Embroidery machine scissors dust removing mechanism |
| TW201317416A (en) * | 2011-10-21 | 2013-05-01 | Fei-Long Gu | Thread automatically cutting machine for an overlock sewing machine |
| CN207062543U (en) * | 2017-06-12 | 2018-03-02 | 安徽天使服装服饰有限责任公司 | A kind of trimming structure of eyelet buttonhole sewing machine |
| CN109972311A (en) * | 2019-05-11 | 2019-07-05 | 温州庄吉服饰有限公司 | A kind of overseam device with dedusting cutting function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110359192B (en) | 2021-03-16 |
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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: 318000 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |
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