CN107723932B - 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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- CN107723932B CN107723932B CN201711070922.XA CN201711070922A CN107723932B CN 107723932 B CN107723932 B CN 107723932B CN 201711070922 A CN201711070922 A CN 201711070922A CN 107723932 B CN107723932 B CN 107723932B
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- drive
- feeding mechanism
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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 mechanisms of flat seaming machine, in a kind of differential cloth feeding mechanism of flat seaming machine of the invention, the second connecting shaft is just able to drive together with the second connecting lever by rotating rotating handle to rotate, to make the second connecting lever that the crotch for being connected to its left end be driven to move up and down, first sliding groove on crotch drives connection sliding block to move up and down together with sliding sleeve, so that the left end of first connecting rod is moved to the different location of the first connecting lever, the first connecting lever practical function adjustable in this way is in the torque arm length of first connecting rod, to adjust the movement velocity of differential retainer, it is finally able to adjust the conveying speed of cloth.
Description
Technical field
The present invention relates to a kind of flat seaming machine and its differential cloth feeding mechanisms, belong to industrial sewing machine technical field.
Background technique
Flat seaming machine conveys cloth using the feeding tooth of feeding tooth and differential tooth is moved back and forth 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 fast speed of material, it is sometimes desirable to which the speed for conveying cloth is slower, the speed difference of the movement by adjusting feeding tooth and differential tooth
Value can adjust the speed of 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 the Chinese utility model patent of CN202247274U.
Flat seaming machine in the prior art adjusts feeding tooth and the mechanism structure of differential tooth is complicated, and the structure of some parts compares
It is complicated strange, and requirement on machining accuracy is higher, not easy to be processed and installation causes the processing cost of flat seaming machine higher.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of flat seaming machine and its differential cloth-feedings
Mechanism can be conveniently adjusted cloth conveying speed, and structure is simple, and 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
Axis, the feed dog frame and differential retainer bilateral reciprocation each independently；It is connected in first connecting shaft and prolongs upward
The first connecting lever stretched is socketed with the sliding sleeve that can be slided up and down along the first connecting lever on first connecting lever, is hinged on sliding sleeve
First connecting rod, the left end of first connecting rod and sliding sleeve are hinged, and the right end of first connecting rod is hinged on differential retainer, and described first turns
Arm swings, to drive differential retainer bilateral reciprocation；The second connecting lever and rotating handle are fixed in second connecting shaft,
Rotating the rotating handle can drive the second connecting shaft to rotate 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 equipped with the first sliding groove that left and right extends, and the lower part of crotch is equipped with the second sliding slot extended up and down, described
First sliding groove is slidably matched with the connection sliding block being arranged on sliding sleeve, and second sliding slot is clipped in the outside of the first connecting shaft and can hang down
Directly slided up and down in the first connecting shaft.
Preferably, further include the drive shaft and third connecting shaft for being parallel to the first connecting shaft, be connected in drive shaft one around
The dextrorotation switch block that drive shaft is eccentrically rotated is connected with the left-handed switch block that can be rotated around the first connecting shaft, work feed in third connecting shaft
The left sliding slot and right rail extended in left-right direction is equipped on retainer and differential retainer, the dextrorotation switch block is slidably connected at the right side
In sliding slot；The left-handed switch block is slidably connected in left sliding slot；The connection of the right end of the drive shaft and drive link, drive link
Right end be eccentrically rotated around drive shaft, the upper end of the left end of drive link and third connecting lever, the left end of second connecting rod are hinged on one
It rises, the lower end of third connecting lever and the lower end of the first connecting lever are fixed together, and the right end of second connecting rod is hinged on feed dog frame；Institute
It states drive shaft rotation and dextrorotation switch block is driven to rotate around the axis of drive shaft, to drive the right end of feed dog frame and differential retainer
It pumps；The drive shaft rotates and drives drive link bilateral reciprocation, to drive the left and right of feed dog frame
It moves back and forth.
Further, the eccentric shaft of relative drive shaft eccentric setting is connected in the drive shaft, the dextrorotation switch block can
Rotationally it is connected on eccentric shaft.
Further, a rolling bearing is socketed on the eccentric shaft, the middle part of dextrorotation switch block has a bearing mounting hole,
The rolling bearing is mounted in bearing mounting hole.
It preferably, further include the terminal pad being fixed on the rack, terminal pad is equipped with an arcuate socket, in the rotating handle
It is connected with a compact heap, there is head of screw on compact heap, head of screw passes through the arcuate socket and is threaded in rotating handle,
Compact heap and rotating handle clamp the terminal pad from the two sides of terminal pad.
Further, the terminal pad is equipped with the scale mark for being used to indicate feed dog frame Yu the differential amount of differential retainer.
Further, it is socketed with a torsional spring in second connecting shaft, torsional spring is fixed on the rack.
Preferably, first connecting lever has the curved portion of bottom-up extension, and the sliding sleeve is matched with curved portion sliding
It closes, the curved portion extends around radiuses such as the second connecting shafts.
The present invention also provides a kind of flat seaming machines, including stretching tight described in above-mentioned technical proposal or its any preferred technical solution
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, the second connecting shaft is just able to drive by rotation rotating handle and is turned with second
Arm rotates together, to make the second connecting lever that the crotch for being connected to its left end be driven to move up and down, the first sliding groove on crotch is driven
Connection sliding block moves up and down together with sliding sleeve, so that the left end of first connecting rod is moved to the different location of the first connecting lever,
The first connecting lever practical function adjustable in this way is in the torque arm length of first connecting rod, so that the movement velocity of differential retainer is adjusted,
It is finally able to adjust the conveying speed of cloth.
Detailed description of the invention
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 partial structure 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
1 feed dog frame, 17 drive shaft
2 differential 18 dextrorotation switch blocks of retainer
The left-handed switch block of 3 first connecting shaft 19
The left sliding slot of 4 second connecting shaft 20
5 third connecting shaft, 21 right rail
6 first connecting lever, 22 eccentric shaft
7 second connecting lever, 23 rolling bearing
8 third connecting lever, 24 bearing mounting hole
9 sliding sleeve, 25 terminal pad
10 first connecting rod, 26 arcuate socket
11 second connecting rod, 27 compact heap
12 rotating handle, 28 scale mark
13 crotch, 29 torsional spring
14 first sliding groove, 30 curved portion
15 second sliding slot, 31 drive link
16 connection sliding blocks
Specific 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 is understood other advantages and efficacy of the present invention easily.
It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification to be taken off
The content shown is not intended to limit the invention enforceable qualifications so that those skilled in the art understands and reads, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the present invention
Under the effect of can be generated and the purpose that can reach, it should all still fall in disclosed technology contents and obtain the model that can cover
In enclosing.Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, be also only
Convenient for being illustrated for narration, rather than to limit the scope of the invention, relativeness is altered or modified, in no essence
It changes under technology contents, when being also considered as the enforceable scope 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 each independently
Right reciprocating motion；The first connecting lever 6 extended upward is connected in first connecting shaft 3, being socketed on first connecting lever 6 can
The sliding sleeve 9 slided up and down along the first connecting lever 6 is hinged with first connecting rod 10, the left end of first connecting rod 10 and sliding on sliding sleeve 9
Set 9 is hinged, and the right end of first connecting rod 10 is hinged on differential retainer 2, and first connecting lever 6 swings, to drive differential
2 bilateral reciprocation of retainer；It is fixed with the second connecting lever 7 and rotating handle 12 in second connecting shaft 4, rotates the rotating handle 12
The second connecting shaft 4 can be driven to rotate 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 equipped with the first sliding groove 14 that left and right extends, and the lower part of crotch 13 is equipped with the second sliding slot 15 extended up and down, and described the
One sliding slot 14 is slidably matched with the connection sliding block 16 being arranged on sliding sleeve 9, and second sliding slot 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, sliding sleeve 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 invention, just it is able to drive by rotating rotating handle 12
Second connecting shaft 4 rotates together with the second connecting lever 7, moves down so that the second connecting lever 7 be made to drive on the crotch 13 for being connected to its left end
Dynamic, the first sliding groove 14 on crotch 13 drives connection sliding block 16 to move up and down together with sliding sleeve 9, so that first connecting rod 10
Left end be moved to the different location of the first connecting lever 6,6 practical function of the first connecting lever adjustable in this way is in the power of first connecting rod 10
Arm lengths are finally able to adjust the conveying speed of cloth to adjust the movement velocity of differential retainer.
In a kind of differential cloth feeding mechanism of flat seaming machine of the invention, feed dog frame and the nonsynchronous left and right of differential retainer 2 are past
It moves again and cloth is made to obtain 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 invention further includes the drive shaft 17 and third connecting shaft for being parallel to the first connecting shaft 3
5, (i.e. center of rotation axis a phase for dextrorotation switch block of dextrorotation switch block 18 being eccentrically rotated around drive shaft 17 is connected in drive shaft 17
There is certain center displacement to the axis of drive shaft), be connected in third connecting shaft 5 can be rotated around the first connecting shaft 3 it is left-handed
The left sliding slot 20 and right rail 21 extended in left-right direction, the right side are equipped on 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 sliding slot 20；The drive shaft 17
It is connect with the right end of drive link 31, the right end of drive link 31 is eccentrically rotated (the i.e. rotation of drive link right end around drive shaft 17
Turn central axis relative drive shaft with certain center displacement), the upper end of the left end of drive link 31 and third connecting lever 8, second
The left end of connecting rod 11 is hinged, and the lower end of third connecting lever 8 and the lower end of the first connecting lever 6 are fixed together, second connecting rod 11
Right end be hinged on feed dog frame 1；The drive shaft 17 rotates and dextrorotation switch block 18 is driven to rotate around the axis of drive shaft 17,
To drive feed dog frame 1 and the right end of differential retainer 2 to pump；The drive shaft 17 rotates and drives drive link
31 bilateral reciprocations, to drive the bilateral reciprocation of feed dog frame 1.
As shown in Figures 1 to 4, when drive shaft 17 rotates, since 18 relative drive shaft 17 of dextrorotation switch block has centainly
Center displacement, so dextrorotation switch block 18 is rotated 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 end of frame 2 pumps together, and the left end of feed dog frame and differential retainer 2 connects around third together with left-handed switch block 19
Spindle 5 rotates；Since 31 relative drive shaft 17 of drive link also has certain center displacement, drive shaft 17 drives dextrorotation switch block
While 18 movement, the right end of drive link 31 is also rotated around the rotation axis of drive shaft 17, and drive link 31 has left and right past
Multiple component motion, so, the left end of drive link 31 drives third connecting lever 8 to be swung left and right, and third 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 end of feed dog frame pumps simultaneously.Since the lower end of the first connecting lever 6 and the lower end of third connecting lever 8 are fixed on
Together, so, when 8 driven shaft 17 of third connecting lever drives and is swung left and right, the first connecting lever 6 is also left together with third connecting lever 8
The right side is waved, and drives 10 bilateral reciprocation of first connecting rod in third connecting lever 8, first connecting rod 10 drives differential retainer 2 or so reciprocal
Movement.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 is just able to drive by rotation rotating handle 12 and is rotated together with the second connecting lever 7, to make second to turn
Arm 7 drives the crotch 13 for being connected to its left end to move up and down, and the first sliding groove 14 on crotch 13 drives connection sliding block 16 and sliding
Set 9 moves up and down together, so that the left end of first connecting rod 10 is moved to the different location of the first connecting lever 6, can adjust in this way
6 practical function of the first connecting lever 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, to adjust the movement velocity of differential retainer, is finally able to adjust the conveying speed of cloth.
In a kind of differential cloth feeding mechanism of flat seaming machine of the invention, 18 relative drive shaft 17 of dextrorotation switch block is eccentrically rotated,
As a preferred embodiment, as shown in Figure 4 and Figure 5,17 bias of relative drive shaft being connected in the drive shaft 17 and is set
The eccentric shaft 22 set, 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 mounted on bearing peace
It fills in hole 24.Also relative drive shaft 17 is eccentrically rotated the right end of drive link 31, can also be arranged in drive shaft 17 one section with
The eccentric shaft 22 of 31 left end of drive link connection.The eccentric position that drive link 31 and dextrorotation switch block 18 are rotated relative to drive shaft 17
It sets according to actual needs and designs, need not be described in detail herein.
As shown in Fig. 2, personnel adjust the differential motion amount of feed dog frame and differential retainer 2, the present invention for ease of operation
The differential cloth feeding mechanism of flat seaming machine a kind of further include the terminal pad 25 being fixed on the rack, terminal pad 25 is equipped with an arcuate socket
26, it is connected with a compact heap 27 in the rotating handle 12, there is head of screw on compact heap 27, head of screw passes through the arcuate socket
It 26 and is threaded in rotating handle 12, compact heap 27 and rotating handle 12 clamp the terminal pad from the two sides of terminal pad 25
25.When operator needs to adjust work feed speed, operator rotates rotating handle 12 to predetermined position, then by compact heap
27 are tightened in rotating handle 12, and compact heap 27 and rotating handle 12 clamp terminal pad 25, in this way, in machine running process,
The position of rotating 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 equipped be used to indicate feed dog frame 1 with
The scale mark 28 of the differential amount of differential retainer 2, operator rotate rotating handle 12 to the corresponding scale mark of work feed speed
At 28；A torsional spring 29 can also be socketed in the second connecting shaft 4, torsional spring 29 is fixed on the rack, in this way, 29 energy of torsional spring
Enough keep rotating handle 12 that there is the trend rotated upward, rotating handle 12 is sagging when preventing 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 sliding sleeve 9 are slidably matched with curved portion 30, and the curved portion 30 extends around radiuses such as the second connecting shafts 4.This
Sample rotates in the second connecting lever 7 and adjusts sliding sleeve 9 at the position on the first connecting lever 6, and sliding sleeve 9 prolongs along curved portion 30
Direction movement is stretched, so, when adjusting differential amount of the differential retainer 2 relative to feed dog frame, differential retainer 2 will not be touched.
The present invention also provides a kind of flat seaming machines, including stretching tight described in above-mentioned technical proposal or its any preferred technical solution
The differential cloth feeding mechanism of seam machine.
Technical solution based on the above embodiment, of the invention a kind of flat seaming machine and its differential cloth feeding mechanism can be easily
The opposite differential amount with feed dog frame of differential retainer 2 is adjusted, to adjust the speed of conveying cloth.A kind of flat seaming machine of the invention
Differential cloth feeding mechanism in drive connection it is relatively reasonable, the structure of part is relatively simple, easy to manufacture, can reduce system
Cause this.
In conclusion the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of differential cloth feeding mechanism of flat seaming machine, 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 each independently for the feed dog frame (1) and differential retainer (2)
Movement；
The first connecting lever (6) extended upward is connected on first connecting shaft (3), being socketed on first connecting lever (6) can
The sliding sleeve (9) slided up and down along the first connecting lever (6) is hinged with first connecting rod (10) on sliding sleeve (9), first connecting rod (10)
Hingedly, the right end of first connecting rod (10) is hinged on differential retainer (2) for left end and sliding sleeve (9), the first connecting lever (6) left and right
It swings, to drive differential retainer (2) bilateral reciprocation；
The second connecting lever (7) and rotating handle (12) are fixed in second connecting shaft (4), rotating the rotating 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 equipped with the first sliding groove (14) that left and right extends, and the lower part of crotch (13) is equipped with the second sliding slot extended up and down
(15), the first sliding groove (14) is slidably matched with the connection sliding block (16) being arranged on sliding sleeve (9), second sliding slot (15) folder
The first connecting shaft (3) outside and can be slided up and down 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: further include being parallel to the first connection
The drive shaft (17) and third connecting shaft (5) of axis (3) are connected with one around the right side that drive shaft (17) is eccentrically rotated in drive shaft (17)
Spill spin block (18) is connected with the left-handed switch block (19) that can be rotated around the first connecting shaft (3), feed dog frame in third connecting shaft (5)
(1) the left sliding slot (20) and right rail (21) extended in left-right direction, the dextrorotation switch block and are equipped on differential retainer (2)
(18) it is slidably connected in right rail (21)；The left-handed switch block (19) is slidably connected in left sliding slot (20)；The drive shaft
(17) it is connect with the right end of drive link (31), the right end of drive link (31) is eccentrically rotated around drive shaft (17), drive link
(31) left end and upper end, the left end of second connecting rod (11) of third connecting lever (8) are hinged, the lower end of third connecting lever (8)
It is fixed together with the lower end of the first connecting lever (6), the right end of second connecting rod (11) is hinged on feed dog frame (1)；
The drive shaft (17) rotates and dextrorotation switch block (18) is driven to rotate around the axis of drive shaft (17), to drive feed dog
The right end of frame (1) and differential retainer (2) pumps；
The drive shaft (17) rotates and drives drive link (31) bilateral reciprocation, 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 3, it is characterised in that: be socketed on the eccentric shaft (22)
Have 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: further include being fixed on the rack
Terminal pad (25), terminal pad (25) are equipped with an arcuate socket (26), are connected with a compact heap (27) on the rotating handle (12),
There is head of screw, head of screw passes through the arcuate socket (26) and is threaded on rotating handle (12), presses on compact heap (27)
Tight block (27) clamps the terminal pad (25) from the two sides of terminal pad (25) with rotating handle (12).
6. the differential cloth feeding mechanism of flat seaming machine according to claim 5, it is characterised in that: the terminal pad (25) is equipped with
It is used to indicate the scale mark (28) of feed dog frame (1) Yu 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)
It is socketed with a torsional spring (29), torsional spring (29) is fixed on the rack.
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 portion (30) of bottom-up extension, the sliding sleeve (9) are slidably matched with curved portion (30), and the curved portion (30) is around
Extend to the radiuses such as two connecting shafts (4).
9. a kind of flat seaming machine, the differential cloth feeding mechanism including the described in any item flat seaming machines of claim 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN107723932B true CN107723932B (en) | 2019-12-03 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111485331A (en) * | 2019-01-28 | 2020-08-04 | 浙江中捷缝纫科技有限公司 | Differential adjusting mechanism and sewing machine with same |
| 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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| CN107723932A (en) | 2018-02-23 |
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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. |