CN214300649U - Differential adjustment mechanism and sewing machine having the same - Google Patents
Differential adjustment mechanism and sewing machine having the same Download PDFInfo
- Publication number
- CN214300649U CN214300649U CN202023019634.1U CN202023019634U CN214300649U CN 214300649 U CN214300649 U CN 214300649U CN 202023019634 U CN202023019634 U CN 202023019634U CN 214300649 U CN214300649 U CN 214300649U
- Authority
- CN
- China
- Prior art keywords
- differential
- shaft
- sewing machine
- rod
- adjustment mechanism
- 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.)
- Active
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 45
- 230000007246 mechanism Effects 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 239000004744 fabric Substances 0.000 claims description 56
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000010355 oscillation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
本实用新型涉及一种差动调节机构及具有其的缝纫机。该差动调节机构包括：差动驱动件，差动驱动件的转动角度可电控调节；差动轴，差动轴通过传动组件与差动驱动件连接，传动组件将差动驱动件的转动转换为差动轴的摆动；差动连片，差动连片的第一端与差动轴连接，差动连片的第二端可移动地设置在缝纫机的差动牙架上，差动连片随差动轴摆动，以调整差动连片的第二端在差动牙架上的位置并限定差动牙架的摆动幅度。该差动调节机构能够自动可靠地调节差动牙架的摆动幅度。
The utility model relates to a differential adjustment mechanism and a sewing machine with the same. The differential adjustment mechanism includes: a differential driving member, the rotation angle of which can be adjusted by electronic control; a differential shaft, the differential shaft is connected with the differential driving member through a transmission assembly, and the transmission assembly rotates the differential driving member Converted to the swing of the differential shaft; differential connecting piece, the first end of the differential connecting piece is connected with the differential shaft, and the second end of the differential connecting piece is movably arranged on the differential tooth frame of the sewing machine, and the differential The connecting piece swings with the differential shaft to adjust the position of the second end of the differential connecting piece on the differential tooth frame and limit the swing range of the differential tooth frame. The differential adjustment mechanism can automatically and reliably adjust the swing range of the differential tooth frame.
Description
Technical Field
The utility model relates to the field of mechanical equipment, especially, relate to a differential adjustment mechanism and have its sewing machine.
Background
In the existing sewing machine, the actual needle pitch during sewing is mainly determined by the motion conditions of the main feed dog and the differential dog. The moving distance proportion of the differential tooth and the main feed tooth is the differential ratio, so that the flatness degree of the cloth during sewing can be adjusted.
Aiming at different processes and product patterns, the planeness of the cloth needing to be sewn is different, some cloth needs to be planed, and the cloth needing to be sewn in some processes has wrinkles, so that the motion amount of a main feed tooth and a differential tooth in a sewing machine needs to be adjusted, and the required needle pitch and the planeness are obtained.
When the stitch length is adjusted, a worker operates an active adjusting mechanism and/or a differential adjusting mechanism in the sewing machine to enable the motion of the active teeth and/or the differential teeth to meet the requirement, so that the required feed amount is obtained, then the active adjusting mechanism and/or the differential adjusting mechanism are locked, and the movement allowance of the active teeth and/or the differential teeth is fixed.
The manual adjustment mode has the problems of insufficient accuracy, incapability of accurately determining the size of the cloth feeding amount and the size of the differential ratio, and time and labor waste of operation of workers.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to a differential adjusting mechanism and a sewing machine having the same, so as to solve the problem of low accuracy of adjusting the differential teeth of the existing sewing machine.
The utility model provides a pair of differential adjustment mechanism, it includes: the rotation angle of the differential driving part can be electrically controlled and adjusted; the differential shaft is connected with the differential driving piece through a transmission assembly, and the transmission assembly converts the rotation of the differential driving piece into the swing of the differential shaft; the first end of the differential connecting sheet is connected with the differential shaft, the second end of the differential connecting sheet is movably arranged on a differential tooth rack of the sewing machine, and the differential connecting sheet swings along with the differential shaft so as to adjust the position of the second end of the differential connecting sheet on the differential tooth rack and limit the swing amplitude of the differential tooth rack.
In one embodiment, the transmission assembly comprises: the driving rod is arranged on the output shaft of the differential driving part and rotates along with the output shaft; the adjusting rod is arranged on the differential shaft and provided with a first sliding groove extending along a first direction, the driving rod is matched with the first sliding groove of the adjusting rod and drives the adjusting rod to swing around the axis of the differential shaft, and the first direction is perpendicular to the axis of the differential shaft.
Thus, the differential driving element can reliably drive the differential shaft to swing, and the structure of the differential driving element is compact.
In one embodiment, the transmission assembly further comprises: the sliding pin is provided with a second sliding groove extending along the axis of the differential shaft, one end of the driving rod is arranged in the second sliding groove and drives the sliding pin to move along a second direction, the second direction is perpendicular to the axis of the differential shaft, and the sliding pin is movably connected in the first sliding groove of the adjusting rod and drives the adjusting rod to swing under the driving of the driving rod.
So set up, can effectively avoid actuating lever and regulation pole card to die.
In one embodiment, the transmission assembly further comprises: the screw rod is rotatably connected to the output shaft of the differential driving piece and rotates around the axis of the output shaft; the screw is arranged on the screw rod, one end of the screw extends into the first sliding groove of the adjusting rod, and the screw moves along the screw rod under the driving of the screw rod and drives the adjusting rod and the differential shaft to swing.
So set up, can drive the differential shaft through lead screw and swing, can realize the auto-lock through lead screw and screw moreover to maintain the swing range of differential dental articulator.
In one embodiment, the differential adjusting mechanism further comprises a differential crank, a first end of the differential crank is hinged on the differential shaft, and a second end of the differential crank is hinged on the first end of the differential connecting piece.
By the arrangement, the differential connecting piece can be accurately driven to move, and the structure is compact.
According to another aspect of the present invention, there is provided a sewing machine, comprising the differential adjusting mechanism and the differential rack, wherein the second end of the differential link of the differential adjusting mechanism is movably connected to the differential rack.
By the arrangement, the automatic adjustment of the swing amplitude of the differential tooth rack can be realized, and the adjustment precision is ensured.
In one embodiment, the sewing machine further comprises a main shaft, a cloth feeding shaft and a cloth feeding connecting rod, wherein a first end of the cloth feeding connecting rod is eccentrically connected to the main shaft, and a second end of the cloth feeding connecting rod is connected to the cloth feeding shaft so as to limit the swing range of the cloth feeding shaft.
By the arrangement, cloth feeding can be realized through the eccentric arrangement of the cloth feeding connecting rod relative to the main shaft, so that the cloth feeding structure is simplified.
In one embodiment, the sewing machine further comprises an eccentric wheel, the eccentric wheel comprises a coaxial section and an eccentric section, the axis of the eccentric section deviates from the axis of the coaxial section, the coaxial section is sleeved on the main shaft and is coaxial with the main shaft, and the first end of the cloth feeding connecting rod is hinged with the eccentric section.
By the arrangement, the eccentric arrangement of the cloth feeding connecting rod relative to the main shaft can be realized through the eccentric wheel, so that the structure of the eccentric arrangement of the cloth feeding connecting rod is simplified.
In one embodiment, the sewing machine further comprises a bearing, the bearing is sleeved outside the eccentric section, and the first end of the cloth feeding connecting rod is sleeved outside the bearing.
So set up, can reduce the wearing and tearing and the noise of work feed connecting rod.
In one embodiment, the coaxial section is further provided with a limiting protrusion, the sewing machine further comprises a stop block, and the cloth feeding connecting rod is located between the limiting protrusion and the stop block so as to limit the movement of the cloth feeding connecting rod along the axial direction of the eccentric section.
By the arrangement, the axial movement of the cloth feeding connecting rod can be prevented.
Drawings
Fig. 1 is a schematic perspective view of a first viewing angle of a first differential adjustment mechanism according to an embodiment of the present invention;
fig. 2 is a partial perspective enlarged view of a differential shaft from a second perspective of a first differential adjustment mechanism according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of a slide pin of a first differential adjustment mechanism according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of a first viewing angle of a differential adjustment mechanism according to a second embodiment of the present invention;
fig. 5 is a schematic perspective view of a third viewing angle of the differential adjustment mechanism according to the second embodiment of the present invention;
fig. 6 is a schematic view of an explosion structure at a cloth feeding mechanism of a sewing machine according to an embodiment of the present invention;
fig. 7 is a schematic perspective view of a first view angle of an eccentric wheel of a cloth feeding mechanism of a sewing machine according to an embodiment of the present invention;
fig. 8 is a schematic perspective view of a second view angle of the eccentric wheel of the cloth feeding mechanism of the sewing machine according to the embodiment of the present invention.
Description of reference numerals:
10. a differential drive; 20. a differential shaft; 31. a drive rod; 32. adjusting a rod; 33. a slide pin; 331. a second chute; 34. a screw rod; 35. a nut; 40. differential connecting sheets; 50. a differential dental articulator; 60. a differential crank; 71. a main shaft; 72. a cloth feeding shaft; 73. a cloth feeding connecting rod; 81. an eccentric wheel; 811. a coaxial segment; 812. an eccentric section; 813. a limiting bulge; 82. a bearing; 83. and a stop block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-8, the present invention provides a differential adjustment mechanism, which includes a differential driving member 10, a differential shaft 20 and a differential connecting piece 40, wherein the rotation angle of the differential driving member 10 can be electrically controlled; the differential shaft 20 is connected to the differential drive 10 via a transmission assembly, which converts the rotation of the differential drive 10 into a swinging movement of the differential shaft 20; the differential link 40 has a first end connected to the differential shaft 20, a second end movably disposed on the differential carrier 50 of the sewing machine, and the differential link 40 swings with the differential shaft 20 to adjust a position of the second end of the differential link 40 on the differential carrier 50 and to define a swing amplitude of the differential carrier 50.
The differential driver 10 of the differential adjustment mechanism can drive and control the swing angle of the differential shaft 20, so that the second end of the differential link 40 moves along the differential rack 50 to adjust the swing amplitude of the differential rack 50, and thus the swing amplitude of the differential teeth provided on the differential rack 50. Because the turned angle of differential drive spare 10 can automatically controlled the regulation, and transmission assembly can convert the rotation of differential drive spare 10 into the swing of differential shaft 20, and then drive differential even piece 40 and remove, consequently makes the adjustment of swing range more intelligent, automatic and accurate, has avoided current manual regulation to need manual operation, and the problem that adjustment accuracy is not enough.
Optionally, different transmission assemblies can be adopted for transmission according to different requirements, so that requirements of space occupation, position setting and the like are met.
For example, as shown in fig. 1 and fig. 2, in a differential adjusting mechanism, a transmission assembly at least includes a driving rod 31 and an adjusting rod 32, the driving rod 31 is disposed on an output shaft of the differential driving member 10 and rotates with the output shaft; the adjustment lever 32 is disposed on the differential shaft 20, and the adjustment lever 32 is provided with a first sliding slot extending in a first direction perpendicular to the axis of the differential shaft 20, and the driving rod 31 is engaged with the first sliding slot of the adjustment lever 32 and drives the adjustment lever 32 to swing around the axis of the differential shaft 20.
The driving rod 31 and the adjusting rod 32 form a link structure, when the differential driving member 10 rotates, the driving rod 31 is driven to rotate, and since the driving rod 31 is indirectly connected with the first sliding slot on the adjusting rod 32 and is in sliding fit, the adjusting rod 32 can be synchronously driven to swing when the driving rod 31 rotates, and since the adjusting rod 32 is fixed on the differential shaft 20, the differential shaft 20 swings therewith, so that the differential link 40 connected with the differential shaft 20 moves, so that the second end of the differential link moves on the differential dental articulator 50, thereby adjusting the swing amplitude of the differential dental articulator 50.
The ratio of the swing amplitude of the differential teeth on the differential tooth rack 50 to the swing amplitude of the active teeth on the active tooth rack is the differential ratio, which can control the flatness of the cloth.
Optionally, in order to ensure the transmission accuracy and avoid the seizing, the transmission assembly further includes a sliding pin 33, the sliding pin 33 is provided with a second sliding slot 331 extending along the axis of the differential shaft 20, one end of the driving rod 31 is disposed in the second sliding slot 331 and drives the sliding pin 33 to move along a second direction, the second direction is perpendicular to the axis of the differential shaft 20, and the sliding pin 33 is movably connected in the first sliding slot of the adjusting rod 32 and drives the adjusting rod 32 to swing under the driving of the driving rod 31.
As shown in fig. 1 and 2, the differential drive 10 is fixed to a motor bracket by a motor mounting screw, and the motor bracket is fixed to the housing by a bracket fixing screw. When performing differential adjustment, an output shaft of the differential driving element 10 (which may be a stepping motor or a servo motor, etc.) rotates to drive the driving rod 31 to rotate, and since one end of the driving rod 31 is movably disposed in the second sliding slot 331 of the sliding pin 33 through a screw, and a third sliding slot extending along the second direction is disposed on the motor bracket, the sliding pin 33 passes through the third sliding slot and is matched with the first sliding slot of the adjusting rod 32, the sliding pin 33 is driven to move along the third sliding slot when the driving rod 31 rotates, so that the adjusting rod 32 drives the differential shaft 20 to swing. The differential link 40 moves along with the differential shaft 20 when it swings, so that the position of the second end thereof on the differential rack 50 is changed, thereby changing the swing angle of the differential rack 50.
After the adjustment is completed, the differential adjustment is fixed by self-locking of the differential drive 10.
In another case, the transmission assembly includes a screw rod 34 and a nut 35 in addition to the driving rod 31 and the adjusting rod 32, the screw rod 34 is rotatably connected to the output shaft of the differential driving member 10 and rotates around the axis of the output shaft; the nut 35 is disposed on the screw rod 34, and one end of the nut 35 extends into the first sliding slot of the adjusting rod 32, and the nut 35 moves along the screw rod 34 under the driving of the screw rod 34 and drives the adjusting rod 32 and the differential shaft 20 to swing.
When the differential driving member 10 rotates to drive the screw rod 34 to rotate, the nut 35 is driven to move along the screw rod 34, because the nut 35 is matched with the first sliding groove of the adjusting rod 32, and the nut 35 is arranged in a way of deviating from the axis of the differential shaft 20, the nut 35 drives the adjusting rod 32 to swing when moving, so that the differential shaft 20 swings, the differential connecting sheet 40 is driven to move on the differential tooth rack, and the swing amplitude of the differential tooth rack is adjusted.
In the present embodiment, the differential adjustment mechanism further includes a differential crank 60, a first end of the differential crank 60 is hinged to the differential shaft 20, and a second end of the differential crank 60 is hinged to the first end of the differential link 40. The differential crank 60 is used for connection, so that the structural requirements of the sewing machine can be met, and the structural compactness and the connection reliability are ensured.
According to another aspect of the present invention, there is provided a sewing machine comprising the differential adjusting mechanism and the differential rack 50, wherein the second end of the differential link 40 of the differential adjusting mechanism is movably connected to the differential rack 50. The sewing machine can automatically drive the differential connecting sheet 40 to move through the differential driving piece 10 of the differential adjusting mechanism, thereby adjusting the swing amplitude of the differential tooth rack 50 and realizing the automatic, intelligent and precise differential ratio adjustment.
In this embodiment, the sewing machine further includes a main shaft 71, a cloth feed shaft 72, and a cloth feed link 73, a first end of the cloth feed link 73 is eccentrically connected to the main shaft 71, and a second end of the cloth feed link 73 is connected to the cloth feed shaft 72 to limit a swing range of the cloth feed shaft 72. In this way, reliable and efficient cloth feeding can be achieved.
During cloth feeding, the main shaft 71 drives the cloth feeding connecting rod 73 eccentrically arranged on the main shaft to swing, and further drives the cloth feeding crank connected to the cloth feeding shaft 72 to swing, so that the motion of the driving tooth frame and the differential tooth frame is realized, and the cloth feeding action is realized. Since the eccentricity of the cloth feeding link 73 with respect to the main shaft 71 is fixed, the swing width of the cloth feeding crank is fixed.
Optionally, in this embodiment, the sewing machine further includes an eccentric 81, the eccentric 81 includes a coaxial segment 811 and an eccentric segment 812, an axis of the eccentric segment 812 is offset from an axis of the coaxial segment 811, the coaxial segment 811 is sleeved on the main shaft 71 and is coaxial with the main shaft 71, and the first end of the cloth feeding connecting rod 73 is hinged with the eccentric segment 812. The eccentric wheel 81 with such a structure can realize the eccentric arrangement of the cloth feeding connecting rod 73 relative to the main shaft 71, and has simple and compact structure.
Optionally, in order to ensure smooth swinging and reduce abrasion, the sewing machine further includes a bearing 82, the bearing 82 is sleeved outside the eccentric section 812, and the first end of the cloth feeding connecting rod 73 is sleeved outside the bearing 82.
The bearing 82 may be, for example, a needle bearing or other suitable bearing.
Optionally, in order to prevent the axial movement of the cloth feeding link 73, a limiting protrusion 813 is further provided on the coaxial section 811, and the sewing machine further includes a stopper 83, and the cloth feeding link 73 is located between the limiting protrusion 813 and the stopper 83 to limit the movement of the cloth feeding link 73 in the axial direction of the eccentric section 812.
In this way, the eccentric 81 is fixed on the main shaft 71, the inner hole cylindrical surface of the eccentric is coaxially matched with the main shaft 71, the inner ring of the bearing is sleeved on the eccentric section 812 of the eccentric 81, the cloth feeding connecting rod 73 is sleeved on the outer ring of the bearing, and the limit bulge part and the stop block 83 of the eccentric 81 can limit the axial movement of the needle bearing and the cloth feeding connecting rod 73. In this way, the cloth feeding is realized, and the swing amplitude of the differential tooth rack can be automatically adjusted.
To achieve the automatic control, the sewing machine may include a controller that controls the differential driving part 10 to perform the differential ratio adjustment, which may be divided into two stages of initial positioning and differential ratio setting.
The differential ratio initial positioning process is as follows:
the differential drive 10 seeks to determine a null signal and then controls the differential drive 10 to operate for a number of steps corresponding to the differential tooth position variable based on the derived differential tooth position variable (denoted as cdy _ initpos _ val), and the differential drive 10 remains locked.
The differential ratio setting process is as follows:
the gauge and the differential ratio are determined from the user input or pattern and after decoupling the gauge and the differential ratio, the number of operational steps (denoted cdy _ value) of the differential drive 10 is derived from the current position (denoted cdy _ current _ value) of the differential drive 10.
The number of operational steps of the differential drive 10 is determined according to the following formula:
cdy _ value cdy _ current _ value + l zhenju _ value _ chardong _ value (formula 1). Where l is a constant, related to the mechanical structure.
After driving the differential drive 10 for a corresponding number of operating steps, it is locked to ensure accurate adjustment.
In this way, a higher degree of automation can be achieved than by manually adjusting the differential ratio; by the method, the real-time adjustment of the differential ratio in the sewing process can be realized; and the memory function of the differential ratio can be realized, and the process parameters during sewing can be conveniently stored by a user. The differential drive may be a servo motor in addition to a stepper motor.
In addition, a plurality of eccentric wheel structures of the existing cloth feeding assembly are simplified, a single driven eccentric wheel is changed, the processing difficulty is reduced, and the problem that the fit precision cannot be matched to cause assembly jamming or the gap is too large to cause noise is solved. The differential ratio is controlled through the differential driving part, automatic control is achieved, other related functions are easily matched, combined sewing performance of the sewing machine is further achieved, requirements of automatic adjustment on operation skills of a user are low, and adjustment strength is reduced.
The differential shaft is controlled to swing around the self axis by the differential driving piece, and a transmission assembly is arranged between the output shaft of the differential driving piece and the differential shaft, preferably a screw rod transmission structure, a connecting rod structure, a gear structure, a synchronous belt structure and the like, so that the reliability is ensured. When the differential driving piece is a stepping motor, the controller can control the screw rod to rotate so as to drive the differential shaft to swing, and meanwhile, the motor has a self-locking function and fixes the differential shaft at a specified position; in addition, the lead screw also has self-locking function for adjust convenient, accurate, easily realize automatic, intelligent, visual.
The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023019634.1U CN214300649U (en) | 2020-12-15 | 2020-12-15 | Differential adjustment mechanism and sewing machine having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023019634.1U CN214300649U (en) | 2020-12-15 | 2020-12-15 | Differential adjustment mechanism and sewing machine having the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214300649U true CN214300649U (en) | 2021-09-28 |
Family
ID=77854165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023019634.1U Active CN214300649U (en) | 2020-12-15 | 2020-12-15 | Differential adjustment mechanism and sewing machine having the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214300649U (en) |
-
2020
- 2020-12-15 CN CN202023019634.1U patent/CN214300649U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205741515U (en) | The needle gage of a kind of sewing machine directly drives controlling organization | |
| CN106544793B (en) | Sewing machine | |
| CN109487446A (en) | A kind of sewing machine | |
| US4643118A (en) | Sewing machine with step motor operated feed device | |
| US9027488B2 (en) | Direct drive cloth feeding mechanism of sewing machine | |
| CN214300649U (en) | Differential adjustment mechanism and sewing machine having the same | |
| GB2179062A (en) | Device for actuating the travel of the needle in a sewing machine | |
| CN107761273A (en) | Sewing machine | |
| CN108796838A (en) | Sewing machine | |
| JP5130091B2 (en) | Cloth cutting device | |
| GB2168085A (en) | Apparatus for automatically adjusting the stitch pitch of a sewing machine | |
| CN213978097U (en) | Cloth feeding adjusting mechanism and sewing machine with same | |
| CN109056197A (en) | The needle gage adjustable precision of electric sewer falls along seam driving mechanism | |
| CN213835829U (en) | Driving structure in sewing machine | |
| JPH028757B2 (en) | ||
| CN209456669U (en) | The needle gage adjustable precision of electric sewer falls along seam driving mechanism | |
| CN211501042U (en) | Fan head shaking mechanism | |
| CN217733447U (en) | Needle pitch differential linkage mechanism for sewing machine | |
| CN110524548B (en) | Robot and sewing machine speed cooperation method based on closed-loop control | |
| CN218491939U (en) | Cloth feeding adjusting mechanism for overedger and overedger | |
| CN215103871U (en) | a sewing machine | |
| US4221136A (en) | Sewing machine and speed adjustment mechanism thereof | |
| JP2800415B2 (en) | Sewing machine cloth feed amount control device | |
| JPS58132416A (en) | Gear shaper | |
| CN111088610B (en) | Rotating shuttle angle adjusting mechanism and sewing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
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.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee before: JACK SEWING MACHINE Co.,Ltd. |