CN110409068A - A kind of sewing machine cloth-dragging wheel apparatus - Google Patents
A kind of sewing machine cloth-dragging wheel apparatus Download PDFInfo
- Publication number
- CN110409068A CN110409068A CN201910802009.7A CN201910802009A CN110409068A CN 110409068 A CN110409068 A CN 110409068A CN 201910802009 A CN201910802009 A CN 201910802009A CN 110409068 A CN110409068 A CN 110409068A
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- Prior art keywords
- cloth
- dragging wheel
- driven
- wheel
- shaft
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- 238000009958 sewing Methods 0.000 title claims abstract description 41
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 210000003781 tooth socket Anatomy 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 abstract description 33
- 238000006073 displacement reaction Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B33/00—Devices incorporated in sewing machines for supplying or removing the work
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a kind of sewing machine cloth-dragging wheel apparatus, by installing mop wheel apparatus on the head of sewing machine (headstock), so that cloth-dragging wheel starts simultaneously at continuous rotation in sewing machine work, fabric dispatch after sewing is left, it not will cause cloth on workbench to accumulate, without the manual dispatch of operator, working efficiency is improved.
Description
Technical field
The present invention relates to technical field of sewing machines, and in particular to a kind of sewing machine cloth-dragging wheel apparatus.
Background technique
In weaving, clothes production enterprise, sewing machine is commonly used cloth process equipment.In cloth sewing process
In, especially sew biggish cloth when, the cloth length after sewing machine exports is longer, be easy to cause sewing machine table cloth
Accumulation occupies sewing machine table, influences the operating space of operator；Meanwhile in sewing process, operator is needed not
Cloth of the output on sewing machine worktable is subjected to artificial dispatch with stopping, biggish time and energy can be wasted.
Cooperated when sewing machine works by the tooth below presser feet with presser feet to realize work feed, current this work feed mode is deposited
Be easy skid the phenomenon that, easily lead to sewing come out stitch it is inconsistent, influence aesthetics, some special fabrics then deposited
It in work feed because of difficult problem, or even can not work normally, will affect the mach speed of sewing, reduce working efficiency.
Summary of the invention
The object of the present invention is to provide a kind of sewing machine cloth-dragging wheel apparatus, by the head of sewing machine (headstock)
Mop wheel apparatus is installed, so that cloth-dragging wheel starts simultaneously at continuous rotation in sewing machine work, by the fabric dispatch after sewing
It leaves, not will cause cloth on workbench and accumulate, without the manual dispatch of operator, improve working efficiency.
Technical proposal that the invention solves the above-mentioned problems is: a kind of sewing machine cloth-dragging wheel apparatus, including flat to be installed on
Mop wheel assembly on the head of seam machine, the mop wheel assembly include one being connected to the eccentric wheel of transmission shaft on head, being set to
Connecting rod of eccentric wheel on eccentric wheel, the cloth-dragging wheel fixed frame on the head, the cloth-dragging wheel on cloth-dragging wheel fixed frame
Shaft, the cloth-dragging wheel being fixed in cloth-dragging wheel shaft and one end are rotatablely connected the connecting rod of eccentric wheel, the other end passes through unidirectionally
Bearing is rotatably connected to the connecting rod of shaft, is additionally provided on the head with the mounting hole passed through for the shaft；The mop
It is connected with conveyer belt between wheel shaft and the shaft, is existed by the unilateral bearing and conveyer belt completion to the cloth-dragging wheel
One-directional rotation on cloth-dragging wheel fixed frame.
It further, further include driven mop wheel assembly and groove on the base of flat seam machine, driven cloth-dragging wheel
Component includes mounting base on the groove, by two guide posts connect the pedestal of the mounting base, both ends have supply described in lead
The driven mop wheeling support for the through-hole that column passes through, the driven shaft on driven mop wheeling support and be set to the driven shaft on
Driven cloth-dragging wheel, the adjustable spring to abut the cloth-dragging wheel rest base is also arranged on two guide posts.
It further, further include the lifting group to go up and down the driven mop wheeling support being set to below the base
Part, lifting assembly include that driven cloth-dragging wheel lift lever, one end connect the mandril and one of the driven cloth-dragging wheel lift lever
End connects the driven cloth-dragging wheel lift lever, the other end passes through the drive rod of through-hole on the pedestal, by stretching the top
Bar makes the driven cloth-dragging wheel lift lever deflect, and then drives the drive rod is mobile to complete to the mop wheeling support
Lifting.
Further, the lifting assembly further includes being fixed on the shaft on pedestal and the cunning in the shaft
Wheel, the drive rod are passed through and are abutted against after through-hole with the pulley upper groove inner wall on the pedestal.
Further, the drive rod is L-type drive rod.
It further, further include being set on the head to adjust the elastic regulating part of the conveyer belt, regulating part packet
Include the adjustment seat with strip-shaped hole, to abut the cylinder of conveyer belt in the adjustment seat and to pass through the bar shaped
Hole is installed by the screw of the adjustment seat.
Further, the belt pulley to connect conveyer belt is equipped in the shaft and cloth-dragging wheel shaft.
Further, the cloth-dragging wheel is equipped with tooth socket.
Further, rubber film is arranged on the driven cloth-dragging wheel.
Beneficial effects of the present invention: a kind of 1. sewing machine cloth-dragging wheel apparatus are equipped with cloth-dragging wheel on the head of sewing machine
Component, mop wheel assembly can be realized in sewing machine work, and cloth-dragging wheel constantly one-directionally rotates, i.e., only along positive hour hands or inverse time
One direction rotation of needle, can be by the constantly dispatch outwardly of the fabric after sewing, so that the fabric after sewing will not be deposited in sewing
On the workbench of machine, the normal operating of operator will not influence；It is arranged on the pedestal of sewing machine 2. the device may additionally include
Driven mop wheel assembly, rotated to cooperate cloth-dragging wheel clamping fabric transported, driven mop wheel assembly be equipped with stretches
Contracting spring, for thicker fabric, driven cloth-dragging wheel can be squeezed drops, protect driven cloth-dragging wheel further through the elastic force of spring
It holds and fabric is good contacts, and then cloth-dragging wheel is cooperated to carry out dispatch to clamp fabric；3. the device may also include lifting assembly,
For relatively thin fabric, the height of driven mop wheeling support can be improved by lifting assembly, so that driven cloth-dragging wheel energy
It is abutted against with fabric, cooperation cloth-dragging wheel to carry out fabric the purpose that dispatch is realized in preferable clamping.
Detailed description of the invention
Fig. 1 is a kind of structure chart of sewing machine cloth-dragging wheel apparatus of the present invention.
Fig. 2 is the structure chart of the mop wheel assembly of one embodiment of the invention.
Fig. 3 is the structure chart of the driven mop wheel assembly of one embodiment of the invention.
Fig. 4 is the explosive view of the mop wheel assembly of one embodiment of the invention.
Fig. 5 is the explosive view of the driven mop wheel assembly of one embodiment of the invention.
In figure:
1- head；2- transmission shaft；3- eccentric wheel；4- connecting rod of eccentric wheel；5- unilateral bearing；6- shaft；7- connecting rod；8- cloth-dragging wheel is solid
Determine frame；81- cloth-dragging wheel shaft；82- cloth-dragging wheel；821- tooth socket；9- mounting hole；10- conveyer belt；11- base；12- groove；13-
Mounting base；14- guide post；15- pedestal；151- through-hole；The driven mop wheeling support of 16-；161- cylindrical hole；162- driven shaft；17- from
Dynamic cloth-dragging wheel；18- adjustable spring；The driven cloth-dragging wheel lift lever of 19-；20- mandril；21- drive rod；22- shaft；23- pulley；
24- adjustment seat；241- strip-shaped hole；242- cylinder；25- screw；26- belt pulley.
Specific embodiment
In order to illustrate the embodiments of the present invention more clearly with technical solution in the prior art, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments, the present invention is not restricted to the embodiment.
Fig. 1 is please referred to Fig. 5.A kind of sewing machine cloth-dragging wheel apparatus of the embodiment of the present invention, including to be installed on flush joint
Mop wheel assembly on the head 1 of machine, the mop wheel assembly include one being connected to the eccentric wheel 3 of transmission shaft 2 on head 1, setting
In the connecting rod of eccentric wheel 4 on eccentric wheel 3, the cloth-dragging wheel fixed frame 8 on the head 1, on cloth-dragging wheel fixed frame 8
Cloth-dragging wheel shaft 81, the cloth-dragging wheel 82 being fixed in cloth-dragging wheel shaft 81 and one end are rotatablely connected the connecting rod of eccentric wheel 4, another
One end is rotatably connected to the connecting rod 7 of shaft 6 by unilateral bearing 5, is additionally provided on the head 1 with so that the shaft 6 passes through
Mounting hole 9；Be connected with conveyer belt 10 between the cloth-dragging wheel shaft 81 and the shaft 6, by the unilateral bearing 5 and
Conveyer belt 10 completes the one-directional rotation to the cloth-dragging wheel 82 on cloth-dragging wheel fixed frame 8.
Supplementary explanation, the unilateral bearing 5 are can be freely rotated in one direction, and lock in the other directions
A kind of bearing, the purpose for the arrangement is that, eccentric wheel 3, which is transmitted axis 2, to be driven and rotates, so that connecting rod of eccentric wheel 4 pushes connecting rod 7
It moves reciprocatingly, and then drive shaft 6 rotates, when connecting rod 7 does rotary motion, due to the effect of unilateral bearing 5, at shaft 6
It in of short duration halted state until entering next rotation process, will not turn round, that is, guarantee the one-directional rotation of shaft 6.
Referring to Fig. 1, Fig. 3 and Fig. 5.It can also include driven dragging on the base 11 of flat seam machine in this example
Cloth wheel assembly and groove 12, driven mop wheel assembly include the mounting base 13 being set on groove 12, by two companies of guide posts 14
Connect the pedestal 15 of the mounting base 13, both ends have the cylindrical hole 161 passed through for the guide post 14 driven mop wheeling support 16,
Driven shaft 162 on driven mop wheeling support 16 and the driven cloth-dragging wheel 17 on the driven shaft 162, two institutes
State the adjustable spring 18 being also arranged on guide post 14 to abut driven 16 bottom of mop wheeling support, the purpose done so
It is that the driven cloth-dragging wheel 17 of setting rotates clamping fabric to cooperate cloth-dragging wheel 82 and transported, on driven mop wheel assembly
Equipped with adjustable spring 18, for thicker fabric, driven cloth-dragging wheel 17 can be squeezed drops, keep further through adjustable spring 18
With fabric is good contacts, and then cloth-dragging wheel 82 is cooperated to carry out dispatch to clamp fabric.
Referring to 5.It can also include set on 11 lower section of base to go up and down the driven mop in this example
The lifting assembly of wheeling support 16, lifting assembly include that driven cloth-dragging wheel lift lever 19, one end connect the driven cloth-dragging wheel and mention
The mandril 20 and one end for rising lever 19 connect the driven cloth-dragging wheel lift lever 19, the other end passes through and leads on the pedestal 15
The drive rod 21 in hole 151 makes the driven cloth-dragging wheel lift lever 19 deflect, and then drives by stretching the mandril 20
The mobile lifting completed to the driven mop wheeling support 16 of the drive rod 21, the purpose for the arrangement is that, for relatively thin face
Material, can improve the height of driven mop wheeling support 16, so that driven cloth-dragging wheel 17 can be with fabric phase by lifting assembly
It abuts, cooperation cloth-dragging wheel 82 to carry out fabric the purpose that dispatch is realized in preferable clamping.
Supplementary explanation, the effect of above-mentioned driven cloth-dragging wheel lift lever 19 are to form one with drive rod 21,20 three of mandril
Lever construction, the one end that driven cloth-dragging wheel lift lever 19 can be made to fix around it by stretching mandril 20 are swung, in turn
Drive drive rod 21 mobile, it should be appreciated that when driven cloth-dragging wheel lift lever 19 is swung, drive rod 21 can occur
Displacement on lateral displacement and vertical direction, i.e., highly change, to drive driven mop wheeling support 16 by pedestal 15
It rises or falls；Pedestal 15 is equipped with guide post 14, drives guide post 14 equally to rise when pedestal 15 rises, and two guide posts 14 are distinguished
Two cylindrical holes 161 on driven mop wheeling support 16, and abutted and stretched between pedestal 15 and driven mop wheeling support 16
Contracting spring 18, adjustable spring 18 is compressed to generate elastic force by driven mop wheeling support 16 when guide post 14 rises, so push from
Dynamic mop wheeling support 16 rises, and abuts against to realize to rise to driven cloth-dragging wheel 17 with fabric, and cooperation cloth-dragging wheel 82 is realized
To the purpose of the discharge of relatively thin fabric.
In this example, the lifting assembly further includes the shaft 22 being fixed on pedestal 15 and in the shaft 22
Pulley 23, the drive rod 21 pass through on the pedestal 15 after through-hole 151 and in the 23 upper groove (not shown) of pulley
Wall abuts against, and the purpose done so is that, when driven cloth-dragging wheel lift lever 19 is swung, lateral position can occur for drive rod 21
Move and vertical direction on displacement, the displacement on vertical direction can be such that driven cloth-dragging wheel 17 rises or falls, explain above
It states.So lateral displacement, so that it may be solved in such a way that drive rod 21 is across through-hole 151 on pedestal 15, in order to preferably
Make drive rod 21 in the displacement occurred on lateral displacement and vertical direction and then driven mop wheeling support 16 is driven to rise or fall
When, need to guarantee that effective lateral displacement occurs on pedestal 15 for drive rod 21, it therefore, can be by the way that shaft be arranged on pedestal 15
22 and pulley 23, drive rod 21 passes through on the pedestal 15 after through-hole 151 and in the 23 upper groove (not shown) of pulley
Wall abuts against, and both ensure that through two through-holes 151 on pedestal 15 and pulley 23 to drive rod 21 by effectively abutting,
Guarantee that drive rod 21 effectively occurs lateral displacement and pedestal is driven to rise, while passing through the rotation of pulley 23, realizes in certain journey
The frictional force between drive rod 21 is reduced on degree, improves the service life of machine.
In this example, a kind of embodiment of the drive rod 21 can be L-type drive rod, and can be the suitable steel wire of thickness
To realize its function.
Referring to Fig. 1 and Fig. 4.It can also include being set on the head 1 to adjust the conveyer belt in this example
10 elastic regulating parts, regulating part include the adjustment seat 24 with strip-shaped hole 241, in the adjustment seat 24 to abut pass
The cylinder 242 and the screw 25 to pass through the fixed adjustment seat 24 of the strip-shaped hole 241 for sending band 10；The shaft 6 with
And can be equipped in cloth-dragging wheel shaft 81 to the belt pulley 26 that connects conveyer belt 10, by strip-shaped hole 241 and screw 25,
Adjustable position of the adjustment seat 24 on head 1, the further cylinder 242 that adjusts is to the big of the conveyer belt 10 extruding dynamics
It is small, thus reach adjust conveyer belt 10 transmission when or it is elastic on belt pulley 26, convenient for preferably transmission.
Referring to Fig. 1 and 4.In this example, a kind of embodiment of the cloth-dragging wheel 82 can be for equipped with tooth socket 821, packet
Tooth socket 821 is included but be not limited to, protrusion, strip groove etc. can also be set, is capable of increasing certain friction convenient for dispatch fabric.
In this example, it can be arranged with rubber film (not shown) on the driven cloth-dragging wheel 17, the purpose done so
It is that driven cloth-dragging wheel 17 there should be certain friction dynamics, skidding will not be sent out when contacting with fabric in this way, is dragged convenient for cooperation
Cotton piece buff 82 clamps fabric and by fabric dispatch.
Specific embodiments of the present invention are described in detail above.It should be appreciated that those skilled in the art are without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all those skilled in the art
Present inventive concept passes through the available technical solution of logical analysis, reasoning, or a limited experiment in the prior art, all
It should be in protection scope determined by the claims.
Claims (9)
1. a kind of sewing machine cloth-dragging wheel apparatus, including the mop wheel assembly on the head (1) to be installed on flat seam machine, feature
Be: the mop wheel assembly is connected to the eccentric wheel (3) of transmission shaft (2) on head (1) including one, is set on eccentric wheel (3)
Connecting rod of eccentric wheel (4), be set to the head (1) on cloth-dragging wheel fixed frame (8), be set to cloth-dragging wheel fixed frame (8) on dragging
Cotton piece buff shaft (81), the cloth-dragging wheel (82) being fixed on cloth-dragging wheel shaft (81) and one end are rotatablely connected the connecting rod of eccentric wheel
(4), the other end is rotatably connected to the connecting rods (7) of shaft (6) by unilateral bearing (5), be additionally provided on the head (1) with for
The mounting hole (9) that the shaft (6) passes through；Conveyer belt is connected between the cloth-dragging wheel shaft (81) and the shaft (6)
(10), it is completed to the cloth-dragging wheel (82) on cloth-dragging wheel fixed frame (8) by the unilateral bearing (5) and conveyer belt (10)
One-directional rotation.
2. a kind of sewing machine cloth-dragging wheel apparatus according to claim 1, it is characterised in that: further include the machine set on flat seam machine
Driven mop wheel assembly and groove (12) on seat (11), driven mop wheel assembly include the mounting base on groove (12)
(13), have by the pedestal (15) of two guide posts (14) connection mounting bases (13), both ends and passed through for the guide post (14)
Cylindrical hole (161) driven mop wheeling support (16), be set to driven mop wheeling support (16) on driven shaft (162) and set
In be also arranged on the driven cloth-dragging wheel (17) on the driven shaft (162), two guide posts (14) to abut it is described from
The adjustable spring (18) of dynamic mop wheeling support (16) bottom.
3. a kind of sewing machine cloth-dragging wheel apparatus according to claim 2, it is characterised in that: further include being set to the base
(11) lifting assembly to go up and down the driven mop wheeling support (16) below, lifting assembly include that driven cloth-dragging wheel is promoted
Lever (19), one end connect the mandril (20) of the driven cloth-dragging wheel lift lever (19) and one end connects the driven mop
Lift lever (19), the other end are taken turns across the drive rod (21) of through-hole (151) on the pedestal (15), passes through and stretches the mandril
(20) so that the driven cloth-dragging wheel lift lever (19) is deflected, and then drive the drive rod (21) is mobile to complete to described
The lifting of driven mop wheeling support (16).
4. a kind of sewing machine cloth-dragging wheel apparatus according to claim 3, it is characterised in that: the lifting assembly further includes solid
Institute is passed through due to the shaft (22) on pedestal (15) and the pulley (23) being set on the shaft (22), the drive rod (21)
Through-hole (151) on pedestal (15) is stated to abut against with the pulley (23) upper groove inner wall afterwards.
5. a kind of sewing machine cloth-dragging wheel apparatus according to claim 3, it is characterised in that: the drive rod (21) is L-type
Drive rod.
6. a kind of sewing machine cloth-dragging wheel apparatus according to claim 1, it is characterised in that: further include being set to the head
(1) to adjust the elastic regulating part of the conveyer belt (10) on, regulating part includes the adjustment seat with strip-shaped hole (241)
(24), to abut the cylinder (242) of conveyer belt (10) and to pass through the strip-shaped hole on the adjustment seat (24)
(241) screw (25) of the adjustment seat (24) is installed.
7. a kind of sewing machine cloth-dragging wheel apparatus according to claim 1, it is characterised in that: the shaft (6) and mop
The belt pulley (26) to connect conveyer belt (10) is equipped on wheel shaft (81).
8. a kind of sewing machine cloth-dragging wheel apparatus according to claim 1, it is characterised in that: the cloth-dragging wheel (82) is equipped with
Tooth socket (821).
9. a kind of sewing machine cloth-dragging wheel apparatus according to claim 2, it is characterised in that: on the driven cloth-dragging wheel (17)
It is arranged with rubber film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910802009.7A CN110409068B (en) | 2019-08-28 | 2019-08-28 | Sewing machine mop wheel device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910802009.7A CN110409068B (en) | 2019-08-28 | 2019-08-28 | Sewing machine mop wheel device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110409068A true CN110409068A (en) | 2019-11-05 |
| CN110409068B CN110409068B (en) | 2024-04-05 |
Family
ID=68368899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910802009.7A Active CN110409068B (en) | 2019-08-28 | 2019-08-28 | Sewing machine mop wheel device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110409068B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07124356A (en) * | 1993-10-28 | 1995-05-16 | Pegasus Sewing Mach Mfg Co Ltd | Auxiliary feeding device for sewing apparatus |
| JP2005334234A (en) * | 2004-05-26 | 2005-12-08 | Pegasus Sewing Mach Mfg Co Ltd | Cylinder type valance stitch sewing machine |
| CN202347240U (en) * | 2011-12-12 | 2012-07-25 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Cloth dragging device for auxiliary device of sewing machine |
| CN108560153A (en) * | 2018-07-04 | 2018-09-21 | 大连双彬缝纫设备有限公司 | Mop wheel apparatus |
| CN210916538U (en) * | 2019-08-28 | 2020-07-03 | 浙江乐江机械有限公司 | Cloth dragging wheel device of sewing machine |
-
2019
- 2019-08-28 CN CN201910802009.7A patent/CN110409068B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07124356A (en) * | 1993-10-28 | 1995-05-16 | Pegasus Sewing Mach Mfg Co Ltd | Auxiliary feeding device for sewing apparatus |
| JP2005334234A (en) * | 2004-05-26 | 2005-12-08 | Pegasus Sewing Mach Mfg Co Ltd | Cylinder type valance stitch sewing machine |
| CN202347240U (en) * | 2011-12-12 | 2012-07-25 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Cloth dragging device for auxiliary device of sewing machine |
| CN108560153A (en) * | 2018-07-04 | 2018-09-21 | 大连双彬缝纫设备有限公司 | Mop wheel apparatus |
| CN210916538U (en) * | 2019-08-28 | 2020-07-03 | 浙江乐江机械有限公司 | Cloth dragging wheel device of sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110409068B (en) | 2024-04-05 |
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