CN107723932A - A kind of flat seaming machine and its differential cloth feeding mechanism - Google Patents
A kind of flat seaming machine and its differential cloth feeding mechanism Download PDFInfo
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- CN107723932A CN107723932A CN201711070922.XA CN201711070922A CN107723932A CN 107723932 A CN107723932 A CN 107723932A CN 201711070922 A CN201711070922 A CN 201711070922A CN 107723932 A CN107723932 A CN 107723932A
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- differential
- shaft
- feeding mechanism
- connecting lever
- seaming machine
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
- D05B27/08—Work-feeding means with feed dogs having horizontal and vertical movements with differential feed motions
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention relates to a kind of differential cloth feeding mechanism of flat seaming machine, in a kind of differential cloth feeding mechanism of flat seaming machine of the present invention, the second connecting shaft can be just driven to be rotated together with the second connecting lever by rotating rotary handle, so that the second connecting lever drives the crotch for being connected to its left end to move up and down, the first chute on crotch drives connection sliding block to be moved up and down together with slip cap, so that the left end of first connecting rod is moved to the diverse location of the first connecting lever, the first connecting lever practical function can so be adjusted in the torque arm length of first connecting rod, so as to adjust the movement velocity of differential retainer, the final transporting velocity for being able to adjust cloth.
Description
Technical field
The present invention relates to a kind of flat seaming machine and its differential cloth feeding mechanism, belongs to industrial sewing machine technical field.
Background technology
Flat seaming machine conveys cloth using the feeding tooth for moving back and forth feeding tooth and differential tooth independently of each other, feeding tooth with
Differential tooth asynchronously differential motion, so that cloth obtains the power of conveying.In sewing operation, it is sometimes desirable to convey cloth
The speed of material, it is sometimes desirable to convey the speed difference for the motion that the speed of cloth is slower, by adjusting feeding tooth and differential tooth
Be worth the speed of can regulation conveying cloth, Chinese invention patent that such as Authorization Notice No. announced is CN101649529B and
The differential cloth feeding mechanism of flat seaming machine is all referred in CN202247274U Chinese utility model patent.
The mechanism structure of flat seaming machine regulation feeding tooth of the prior art and differential tooth is complicated, and the structure of some parts compares
It is complicated strange, and requirement on machining accuracy is higher, is not easy processing and installation, causes the processing cost of flat seaming machine higher.
The content of the invention
In view of the above the shortcomings that prior art, it is an object of the invention to provide a kind of flat seaming machine and its differential cloth-feeding
Mechanism, cloth transporting velocity can be conveniently adjusted, simple in construction, part is easy to process.
To achieve the above object, the present invention provides a kind of differential cloth feeding mechanism of flat seaming machine, adopts the following technical scheme that：One
The differential cloth feeding mechanism of kind flat seaming machine, including feed dog frame, differential retainer, the first connecting shaft being parallel to each other and the second connection
Axle, the feed dog frame and differential retainer bilateral reciprocation independently of one another；It is connected with first connecting shaft and prolongs upward
The first connecting lever stretched, the slip cap that can be slided up and down along the first connecting lever is socketed with first connecting lever, is hinged with slip cap
First connecting rod, left end and the slip cap of first connecting rod are hinged, and the right-hand member of first connecting rod is hinged on differential retainer, and described first turns
Arm swings, so as to drive differential retainer bilateral reciprocation；The second connecting lever and rotary handle are fixed with second connecting shaft,
Rotating the rotary handle can drive the second connecting shaft to be rotated together with the second connecting lever, and the left end of the second connecting lever is hinged on a crotch
Top, the top of crotch is provided with the first chute of left and right extension, and the bottom of crotch is provided with the second chute extended up and down, described
First chute is slidably matched with the connection sliding block being arranged on slip cap, and the second chute is clipped in the outside of the first connecting shaft and can hung down
Directly slided up and down in the first connecting shaft.
Preferably, in addition to drive shaft and the 3rd connecting shaft parallel to the first connecting shaft, be connected with drive shaft one around
The dextrorotation switch block of drive shaft eccentric rotary, the left-handed switch block that can be rotated around the first connecting shaft, work feed are connected with the 3rd connecting shaft
The left chute and right rail extended in left-right direction is equipped with retainer and differential retainer, the dextrorotation switch block is slidably connected at the right side
In chute；The left-handed switch block is slidably connected in left chute；The right-hand member connection of the drive shaft and drive link, drive link
Right-hand member around drive shaft eccentric rotary, the upper end of the left end of drive link and the 3rd connecting lever, the left end of second connecting rod are hinged on one
Rise, the lower end and the lower end of the first connecting lever of the 3rd connecting lever are fixed together, and the right-hand member of second connecting rod is hinged on feed dog frame；Institute
State drive shaft rotation and drive dextrorotation switch block to be rotated around the axis of drive shaft, so as to drive the right-hand member of feed dog frame and differential retainer
Pump；The drive shaft rotates and drives drive link bilateral reciprocation, so as to drive the left and right of feed dog frame
Move back and forth.
Further, the eccentric shaft of relative drive shaft eccentric setting is connected with the drive shaft, the dextrorotation switch block can
Rotationally it is connected on eccentric shaft.
Further, a rolling bearing is socketed with the eccentric shaft, the middle part of dextrorotation switch block has a bearing mounting hole,
The rolling bearing is arranged in bearing mounting hole.
Preferably, in addition to the terminal pad that is fixed in frame, terminal pad is provided with an arcuate socket, on the rotary handle
A compact heap is connected with, there is head of screw on compact heap, head of screw is through the arcuate socket and is threaded on rotary handle,
Compact heap clamps the terminal pad with rotary handle from the both sides of terminal pad.
Further, the terminal pad, which is provided with, is used to indicate feed dog frame and the scale mark of the differential amount of differential retainer.
Further, a torsion spring is socketed with second connecting shaft, torsion spring is fixed in frame.
Preferably, first connecting lever has the curved portions of bottom-up extension, and the slip cap slides with curved portions matches somebody with somebody
Close, the curved portions extend around radiuses such as the second connecting shafts.
The present invention also provides a kind of flat seaming machine, including above-mentioned technical proposal or taut described in its any preferable technical scheme
The differential cloth feeding mechanism of seam machine.
As described above, a kind of flat seaming machine of the present invention and its differential cloth feeding mechanism, have the advantages that：At this
In a kind of differential cloth feeding mechanism of flat seaming machine of invention, just the second connecting shaft can be driven to be turned with second by rotating rotary handle
Arm rotates together, so that the second connecting lever drives the crotch for being connected to its left end to move up and down, the first chute on crotch drives
Connection sliding block moves up and down together with slip cap, so that the left end of first connecting rod is moved to the diverse location of the first connecting lever,
The first connecting lever practical function can so be adjusted in the torque arm length of first connecting rod, so as to adjust the movement velocity of differential retainer,
The final transporting velocity for being able to adjust cloth.
Brief description of the drawings
Fig. 1 is shown as the schematic diagram of the differential cloth feeding mechanism of flat seaming machine；
Fig. 2 is shown as the overall structure diagram of the differential cloth feeding mechanism of flat seaming machine；
Fig. 3 is shown as the drive mechanism schematic diagram that drive shaft drives feed dog frame；
Fig. 4 is shown as the schematic diagram of the differential cloth feeding mechanism from rear direction；
Fig. 5 is shown as the part-structure schematic diagram of drive shaft；
Fig. 6 is shown as the drive mechanism schematic diagram of the first connecting lever, crotch and the second connecting lever.
Component label instructions
The drive shaft of 1 feed dog frame 17
The 2 differential dextrorotation switch blocks of retainer 18
3 first connecting shaft, 19 left-handed switch block
4 second connecting shaft, 20 left chute
The right rail of 5 the 3rd connecting shaft 21
The eccentric shaft of 6 first connecting lever 22
The rolling bearing of 7 second connecting lever 23
The bearing mounting hole of 8 the 3rd connecting lever 24
The terminal pad of 9 slip cap 25
The arcuate socket of 10 first connecting rod 26
The compact heap of 11 second connecting rod 27
The scale mark of 12 rotary handle 28
The torsion spring of 13 crotch 29
The curved portions of 14 first chute 30
The drive link of 15 second chute 31
16 connection sliding blocks
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only coordinating specification to be taken off
The content shown, so that those skilled in the art understands and reads, the enforceable qualifications of the present invention are not limited to, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, do not influenceing the present invention
Under the effect of can be generated and the purpose that can reach, it all should still fall and obtain the model that can cover in disclosed technology contents
In enclosing.Meanwhile cited such as " on ", " under " in this specification, "left", "right", the term of " centre " and " one ", also it is only
It is easy to understanding for narration, and is not used to limit the enforceable scope of the present invention, its relativeness is altered or modified, without essence
Change under technology contents, when being also considered as the enforceable category of the present invention.
As depicted in figs. 1 and 2, the present invention provides a kind of differential cloth feeding mechanism of flat seaming machine, including feed dog frame 1, differential
Retainer 2, the first connecting shaft 3 being parallel to each other and the second connecting shaft 4, the feed dog frame 1 and differential retainer 2 are left independently of one another
Right reciprocating motion；The first connecting lever 6 extended upward is connected with first connecting shaft 3, being socketed with first connecting lever 6 can
The slip cap 9 slided up and down along the first connecting lever 6, first connecting rod 10, the left end of first connecting rod 10 and slip are hinged with slip cap 9
Set 9 is be hinged, and the right-hand member of first connecting rod 10 is hinged on differential retainer 2, and first connecting lever 6 swings, differential so as to drive
The bilateral reciprocation of retainer 2；The second connecting lever 7 and rotary handle 12 are fixed with second connecting shaft 4, rotates the rotary handle 12
The second connecting shaft 4 can be driven to be rotated together with the second connecting lever 7, the left end of the second connecting lever 7 is hinged on the top of a crotch 13, crotch
13 top is provided with the first chute 14 of left and right extension, and the bottom of crotch 13 is provided with the second chute 15 extended up and down, and described the
One chute 14 is slidably matched with the connection sliding block 16 being arranged on slip cap 9, and the second chute 15 is clipped in the outside of the first connecting shaft 3
And can be slided up and down perpendicular to the first connecting shaft 3, the connection sliding block 16, crotch 13, slip cap 9 and first connecting rod 10 are coaxially
It is hinged.In a kind of differential cloth feeding mechanism of flat seaming machine of the present invention, it can just be driven by rotating rotary handle 12
Second connecting shaft 4 rotates together with the second connecting lever 7, is moved down so that the second connecting lever 7 drives to be connected on the crotch 13 of its left end
Dynamic, the first chute 14 on crotch 13 drives connection sliding block 16 to be moved up and down together with slip cap 9, so that first connecting rod 10
Left end be moved to the diverse location of the first connecting lever 6, can so adjust the practical function of the first connecting lever 6 in the power of first connecting rod 10
Arm lengths, so as to adjust the movement velocity of differential retainer, finally it is able to adjust the transporting velocity of cloth.
In a kind of differential cloth feeding mechanism of flat seaming machine of the present invention, feed dog frame and 2 nonsynchronous left and right of differential retainer are past
Move again and cloth is obtained the power conveyed in left-right direction, as a preferred embodiment, as shown in Figures 1 to 4,
A kind of differential cloth feeding mechanism of flat seaming machine of the present invention also includes the connecting shaft of drive shaft 17 and the 3rd parallel to the first connecting shaft 3
5, be connected with drive shaft 17 one around the eccentric rotary of drive shaft 17 (the i.e. center of rotation axis phase of dextrorotation switch block of dextrorotation switch block 18
There is certain center displacement to the axis of drive shaft), be connected with the 3rd connecting shaft 5 can be rotated around the first connecting shaft 3 it is left-handed
The left chute 20 and right rail 21 extended in left-right direction, the right side are equipped with switch block 19, feed dog frame 1 and differential retainer 2
Spill spin block 18 is slidably connected in right rail 21；The left-handed switch block 19 is slidably connected in left chute 20；The drive shaft 17
It is connected with the right-hand member of drive link 31, the right-hand member of drive link 31 is around eccentric rotary (the i.e. rotation of drive link right-hand member of drive shaft 17
Turning central axis relative drive shaft has certain center displacement), the upper end of the left end of drive link 31 and the 3rd connecting lever 8, second
The left end of connecting rod 11 is hinged, and the lower end of the 3rd connecting lever 8 and the lower end of the first connecting lever 6 are fixed together, second connecting rod 11
Right-hand member be hinged on feed dog frame 1；The drive shaft 17 rotates and drives dextrorotation switch block 18 to be rotated around the axis of drive shaft 17,
So as to drive feed dog frame 1 and the right-hand member of differential retainer 2 to pump；The drive shaft 17 rotates and drives drive link
31 bilateral reciprocations, so as to drive the bilateral reciprocation of feed dog frame 1.
As shown in Figures 1 to 4, when drive shaft 17 rotates, because the relative drive shaft 17 of dextrorotation switch block 18 has necessarily
Center displacement, so dextrorotation switch block 18 rotates around the rotation axis of drive shaft 17, dextrorotation switch block 18, which has, to pump point
Amount and bilateral reciprocation component, under the drive of the component that pumps of dextrorotation switch block 18, feed dog frame and differential tooth
The right-hand member of frame 2 pumps together, and the left end of feed dog frame and differential retainer 2 connects together with left-handed switch block 19 around the 3rd
Spindle 5 rotates；Because the relative drive shaft 17 of drive link 31 also has certain center displacement, drive shaft 17 drives dextrorotation switch block
While 18 motion, the right-hand member of drive link 31 also has left and right past around the rotation axis rotation of drive shaft 17, drive link 31
Multiple component motion, so, the left end of drive link 31 drives the 3rd connecting lever 8 to vacillate now to the left, now to the right, and the 3rd connecting lever 8 drives second connecting rod 11
Bilateral reciprocation, second connecting rod 11 drive feed dog frame bilateral reciprocation；Therefore, feed dog frame bilateral reciprocation is same
When, the right-hand member of feed dog frame pumps simultaneously.Because the lower end of the first connecting lever 6 and the lower end of the 3rd connecting lever 8 are fixed on
Together, so, when the driven shaft 17 of the 3rd connecting lever 8 drives and when vacillating now to the left, now to the right, the first connecting lever 6 is also left together with the 3rd connecting lever 8
The right side is waved, and drives the bilateral reciprocation of first connecting rod 10 in the 3rd connecting lever 8, first connecting rod 10 drives differential retainer 2 or so reciprocal
Motion.So the transmission connecting mechanism between the first connecting shaft 3 and feed dog frame is different from the first connecting shaft 3 and differential retainer 2
Between transmission connecting mechanism, therefore, feed dog frame and differential retainer 2 being capable of asynchronously bilateral reciprocations.Such as Fig. 1 to figure
Shown in 3, the second connecting shaft 4 can be just driven to be rotated together with the second connecting lever 7 by rotating rotary handle 12, so that second turns
Arm 7 drives the crotch 13 for being connected to its left end to move up and down, and the first chute 14 on crotch 13 drives connection sliding block 16 with sliding
Set 9 moves up and down together, so that the left end of first connecting rod 10 is moved to the diverse location of the first connecting lever 6, can so adjust
The practical function of the first connecting lever 6 is saved in the torque arm length of first connecting rod 10 so that the biography between the first connecting shaft 3 and differential retainer 2
Dynamic characteristic changes, and so as to adjust the movement velocity of differential retainer, is finally able to adjust the transporting velocity of cloth.
In a kind of differential cloth feeding mechanism of flat seaming machine of the present invention, the eccentric rotary of 18 relative drive shaft of dextrorotation switch block 17,
As a preferred embodiment, as shown in Figure 4 and Figure 5, the bias of relative drive shaft 17 is connected with the drive shaft 17 and is set
The eccentric shaft 22 put, the dextrorotation switch block 18 are rotatably connected on eccentric shaft 22.It can be socketed on the eccentric shaft 22
There is a rolling bearing 23, the middle part of dextrorotation switch block 18 has a bearing mounting hole 24, and the rolling bearing 23 is pacified installed in bearing
Fill in hole 24.The right-hand member of the drive link 31 also eccentric rotary of relative drive shaft 17, can also be set in drive shaft 17 one section with
The eccentric shaft 22 of the left end of drive link 31 connection.The eccentric position that drive link 31 rotates with dextrorotation switch block 18 relative to drive shaft 17
Put according to being actually needed and designing, need not be described in detail herein.
As shown in Fig. 2 the differential motion amount of feed dog frame and differential retainer 2 is adjusted for the ease of operating personnel, the present invention
The differential cloth feeding mechanism of flat seaming machine a kind of also include being fixed on terminal pad 25 in frame, terminal pad 25 is provided with an arcuate socket
26, a compact heap 27 is connected with the rotary handle 12, there is head of screw, head of screw passes through the arcuate socket on compact heap 27
26 and it is threaded on rotary handle 12, compact heap 27 clamps the terminal pad with rotary handle 12 from the both sides of terminal pad 25
25.When operating personnel need to adjust work feed speed, operating personnel rotate rotary handle 12 to precalculated position, then by compact heap
27 are tightened on rotary handle 12, and compact heap 27 clamps terminal pad 25 with rotary handle 12, so, in machine running process,
The position of rotary handle 12 will not move, and the differential motion amount between feed dog frame and differential retainer 2 will keep stable, because
This, work feed speed will be stablized.As shown in Figure 2, it is preferable that can in terminal pad 25 be provided be used for indicate feed dog frame 1 with
The scale mark 28 of differential 2 differential amount of retainer, operating personnel rotate rotary handle 12 to scale mark corresponding to work feed speed
At 28；A torsion spring 29 can also be socketed with the second connecting shaft 4, torsion spring 29 is fixed in frame, so, the energy of torsion spring 29
Enough keep rotary handle 12 that there is the trend rotated upward, prevent that rotary handle 12 is sagging when compact heap 27 from loosening.
As shown in fig. 6, as a preferred embodiment, first connecting lever 6 has the arc of bottom-up extension
Portion 30, the slip cap 9 are slidably matched with curved portions 30, and the curved portions 30 extend around the grade radius of the second connecting shaft 4.This
Sample, when being rotated in the second connecting lever 7 and adjusting slip cap 9 in the position on the first connecting lever 6, slip cap 9 prolongs along curved portions 30
Direction motion is stretched, so, in differential amount of the differential retainer 2 of regulation relative to feed dog frame, differential retainer 2 will not be touched.
The present invention also provides a kind of flat seaming machine, including above-mentioned technical proposal or taut described in its any preferable technical scheme
The differential cloth feeding mechanism of seam machine.
Technical scheme based on above-described embodiment, a kind of flat seaming machine and its differential cloth feeding mechanism of the invention can be easily
The relative differential amount with feed dog frame of differential retainer 2 is adjusted, so as to adjust the speed of conveying cloth.A kind of flat seaming machine of the present invention
Differential cloth feeding mechanism in drive connection it is relatively reasonable, the structure of part is relatively simple, manufacture easy to process, can reduce system
Cause this.
In summary, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (9)
1. a kind of differential cloth feeding mechanism of flat seaming machine, it is characterized in that, including feed dog frame (1), differential retainer (2), be parallel to each other
The first connecting shaft (3) and the second connecting shaft (4), left and right is reciprocal independently of one another for the feed dog frame (1) and differential retainer (2)
Motion；
The first connecting lever (6) extended upward is connected with first connecting shaft (3), being socketed with first connecting lever (6) can
The slip cap (9) slided up and down along the first connecting lever (6), first connecting rod (10) is hinged with slip cap (9), first connecting rod (10)
Left end is be hinged with slip cap (9), and the right-hand member of first connecting rod (10) is hinged on differential retainer (2), the first connecting lever (6) left and right
Swing, so as to drive differential retainer (2) bilateral reciprocation；
The second connecting lever (7) and rotary handle (12) are fixed with second connecting shaft (4), rotating the rotary handle (12) can drive
Second connecting shaft (4) rotates together with the second connecting lever (7), and the left end of the second connecting lever (7) is hinged on the top of a crotch (13), fork
The top of frame (13) is provided with the first chute (14) of left and right extension, and the bottom of crotch (13) is provided with the second chute extended up and down
(15), first chute (14) is slidably matched with the connection sliding block (16) being arranged on slip cap (9), the second chute (15) folder
It can slide up and down in the outside of the first connecting shaft (3) and perpendicular to the first connecting shaft (3).
2. the differential cloth feeding mechanism of flat seaming machine according to claim 1, it is characterised in that：Also include parallel to the first connection
The drive shaft (17) and the 3rd connecting shaft (5) of axle (3), one is connected with around the right side of drive shaft (17) eccentric rotary in drive shaft (17)
Spill spin block (18), the left-handed switch block (19) that can be rotated around the first connecting shaft (3), feed dog frame are connected with the 3rd connecting shaft (5)
(1) the left chute (20) and right rail (21) extended in left-right direction, the dextrorotation switch block and are equipped with differential retainer (2)
(18) it is slidably connected in right rail (21)；The left-handed switch block (19) is slidably connected in left chute (20)；The drive shaft
(17) right-hand member with drive link (31) is connected, and the right-hand member of drive link (31) is around drive shaft (17) eccentric rotary, drive link
(31) upper end of left end and the 3rd connecting lever (8), the left end of second connecting rod (11) are hinged, the lower end of the 3rd connecting lever (8)
It is fixed together with the lower end of the first connecting lever (6), the right-hand member of second connecting rod (11) is hinged on feed dog frame (1)；
The drive shaft (17) rotates and drives dextrorotation switch block (18) to be rotated around the axis of drive shaft (17), so as to drive feed dog
The right-hand member of frame (1) and differential retainer (2) pumps；
The drive shaft (17) rotates and drives drive link (31) bilateral reciprocation, so as to drive a left side for feed dog frame (1)
Right reciprocating motion.
3. the differential cloth feeding mechanism of flat seaming machine according to claim 2, it is characterised in that：Connected on the drive shaft (17)
There is the eccentric shaft (22) of relative drive shaft (17) eccentric setting, the dextrorotation switch block (18) is rotatably connected to eccentric shaft (22)
On.
4. the differential cloth feeding mechanism of flat seaming machine according to claim 2, it is characterised in that：It is socketed on the eccentric shaft (22)
There is a rolling bearing (23), the middle part of dextrorotation switch block (18) has a bearing mounting hole (24), rolling bearing (23) installation
In bearing mounting hole (24).
5. the differential cloth feeding mechanism of flat seaming machine according to claim 1, it is characterised in that：Also include being fixed in frame
Terminal pad (25), terminal pad (25) are provided with an arcuate socket (26), a compact heap (27) are connected with the rotary handle (12),
There is head of screw, head of screw is through the arcuate socket (26) and is threaded on rotary handle (12), presses on compact heap (27)
Tight block (27) clamps the terminal pad (25) with rotary handle (12) from the both sides of terminal pad (25).
6. the differential cloth feeding mechanism of flat seaming machine according to claim 5, it is characterised in that：The terminal pad (25) is provided with
For indicating the scale mark (28) of feed dog frame (1) and differential retainer (2) differential amount.
7. the differential cloth feeding mechanism of flat seaming machine according to claim 5, it is characterised in that：On second connecting shaft (4)
A torsion spring (29) is socketed with, torsion spring (29) is fixed in frame.
8. the differential cloth feeding mechanism of flat seaming machine according to claim 1, it is characterised in that：First connecting lever (6) has
The curved portions (30) of bottom-up extension, the slip cap (9) are slidably matched with curved portions (30), and the curved portions (30) are around
Extend the radiuses such as two connecting shafts (4).
9. a kind of flat seaming machine, include the differential cloth feeding mechanism of the flat seaming machine described in any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711070922.XA CN107723932B (en) | 2017-11-03 | 2017-11-03 | A kind of flat seaming machine and its differential cloth feeding mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711070922.XA CN107723932B (en) | 2017-11-03 | 2017-11-03 | A kind of flat seaming machine and its differential cloth feeding mechanism |
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| CN107723932A true CN107723932A (en) | 2018-02-23 |
| CN107723932B CN107723932B (en) | 2019-12-03 |
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| CN108589061A (en) * | 2018-05-21 | 2018-09-28 | 杰克缝纫机股份有限公司 | A kind of sewing machine and its differential regulating mechanism |
| CN108589061B (en) * | 2018-05-21 | 2020-11-13 | 杰克缝纫机股份有限公司 | Sewing machine and differential adjusting mechanism thereof |
| CN109487446A (en) * | 2018-12-17 | 2019-03-19 | 浙江翔科缝纫机股份有限公司 | A kind of sewing machine |
| CN111748919A (en) * | 2019-03-29 | 2020-10-09 | 杰克缝纫机股份有限公司 | Tooth rack height adjusting mechanism of lockstitch sewing machine |
| CN111748919B (en) * | 2019-03-29 | 2022-06-21 | 杰克科技股份有限公司 | Tooth rack height adjusting mechanism of lockstitch sewing machine |
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| CN107723932B (en) | 2019-12-03 |
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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. |