CN105970506A - Upper thread cutting mechanism of sewing machine - Google Patents
Upper thread cutting mechanism of sewing machine Download PDFInfo
- Publication number
- CN105970506A CN105970506A CN201610397678.7A CN201610397678A CN105970506A CN 105970506 A CN105970506 A CN 105970506A CN 201610397678 A CN201610397678 A CN 201610397678A CN 105970506 A CN105970506 A CN 105970506A
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- CN
- China
- Prior art keywords
- cutting mechanism
- thread cutting
- connecting rod
- sewing machine
- steel wire
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
Abstract
The invention provides an upper thread cutting mechanism of a sewing machine. The mechanism comprises an upper tool apron installed on a machine shell of the sewing machine, an upper movable cutter arranged on the upper tool apron, and a power source installed on the machine shell of the sewing machine and used for driving a lower thread cutting mechanism of the sewing machine to move. The power source is connected with the upper movable cutter through a transmission unit and drives the upper movable cutter to move. The power source used for driving the upper thread cutting mechanism to move is used for driving the lower thread cutting mechanism to move, the upper thread cutting mechanism and the lower thread cutting mechanism can be driven at the same time even if only one power source is used, and accordingly a power source of an upper thread cutting mechanism in the prior art is omitted. Thus, on the premise that automatic thread cutting performance of an interlock machine is not influenced, the overall structure of a thread cutting mechanism of the interlock machine is simpler and more compact, and the interlock machine is attractive in overall appearance and not heavy.
Description
Technical field
The present invention relates to a kind of sewing machine, particularly relate to the upper thread cutting mechanism of a kind of sewing machine.
Background technology
Along with developing rapidly of science and technology, the mechanization degree that clothing manufacture is more and more higher, and clothes making manufacturing apparatus is with sewing
Machine is main, and sewing machine includes again flat seam machine, overedger, flat seaming machine etc., and various types are typically equipped with automatic needle-foot-lifting machine
Structure, automatic shearing mechanism etc., with the function of abundant sewing machine.
In above-mentioned different types of machines, flat seaming machine is usually three pin five sewer structures, and five lines refer to a foundation line, a decoration
Line and three upper threads, therefore, on flat seaming machine, the automatic shearing mechanism of configuration includes thread cutting mechanism and lower thread cutting mechanism, on
Thread cutting mechanism is for cutting off decorative thread after each sewing finishing, and lower thread cutting mechanism is for cutting off bottom line after each sewing finishing
And upper thread.Shown in Fig. 1 for the thread cutting mechanism of sewing machine in prior art, from fig. 1, it can be seen that upper thread cutting mechanism is by upper trimming electromagnetism
Ferrum 100 drives, and lower thread cutting mechanism is driven by lower trimming electric magnet 200, and upper trimming structure and upper trimming electric magnet 100 are all
Being arranged on the left cover position of flat seaming machine mechanism, therefore, overall structure is complex, and seems the heaviest, the most unsightly
Having an effect on convenience when workman uses stitching sewing machine cloth, such as when sewing, workman hauls the process that cloth moves forward
In, the hands of workman easily encounters upper trimming electric magnet, therefore operates very inconvenient.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of overall structure relatively simple,
The upper thread cutting mechanism of compact sewing machine.
For achieving the above object, the present invention provides the upper thread cutting mechanism of a kind of sewing machine, including being arranged on sewing machine case
On upper cutter head, be arranged on upper cutter head and movably go up moving knife and be arranged on sewing machine case and for driving seam
Threading the power source of lower thread cutting mechanism action of machine, described power source is connected with upper moving knife by gear unit and drives dynamic
Cutter moves.
Preferably, described power source is electric magnet or cylinder.
Further, described gear unit includes that steel wire rope and movable connecting rod, described movable connecting rod are pacified movably linearly
Being contained on described upper cutter head, one end of described steel wire rope is fixed on the fork in the lower thread cutting mechanism of sewing machine, described fork
Being driven by power source and move linearly, the other end of described steel wire rope is fixing with one end of movable connecting rod to be connected, movable connecting rod
The other end is fixing with described upper moving knife to be connected.
Preferably, described steel wire rope is located in a steel wire rope overcoat movably, and one end of described steel wire rope overcoat is solid
Being scheduled on sewing machine case, the other end of steel wire rope overcoat is fixed on upper cutter head.
Further, described upper cutter head is fixed with guider screw, described movable connecting rod offers one along movable connecting rod
Moving direction extend connecting rod gathering sill, described guider screw is located in connecting rod gathering sill.
Preferably, connecting and have the first back-moving spring between described movable connecting rod and upper cutter head, this first back-moving spring can edge
The moving direction of movable connecting rod is compressed axially or axial tension.
Further, described steel wire rope is connected by a regulating block with fork, and described fork includes being connected with power source
The fixed arm connect and the loose ends crank torque arm being connected with loose ends crank in sewing machine, described loose ends crank torque arm is along fork
Rectilinear movement direction extend, described regulating block by first regulate screw be arranged in loose ends crank torque arm；Described regulating block
In offer one and run through the through hole of regulating block along the rectilinear movement direction of fork, one end of described steel wire rope is located in regulating block
In through hole and this end of steel wire rope is provided with a flange, and the diameter of described flange is more than the diameter of through hole, described flange and tune
Form upper moving knife stroke first between locking nub and regulate region.
Further, described movable connecting rod is connected by a stop screw is fixing with upper moving knife, the lower end of described upper cutter head
Being also associated with a limiting plate, matches with stop screw, for limiting the descending of upper moving knife in the upper end of described limiting plate.
Preferably, described limiting plate is connected by the second regulation screw with upper cutter head, the upper end of described limiting plate and limit
Form upper moving knife stroke second between the screw of position and regulate region.
Preferably, a moving knife guiding extended along the moving direction of upper moving knife is formed between described limiting plate and upper cutter head
Groove, described upper moving knife is located in moving knife gathering sill movably.
As it has been described above, the upper thread cutting mechanism of the sewing machine that the present invention relates to, have the advantages that
In the application, the power source of upper thread cutting mechanism action is driven to be used for driving lower thread cutting mechanism action by being used for
Power source, i.e. uses a power source to simultaneously drive thread cutting mechanism and lower thread cutting mechanism, and then saves in prior art and cut
The power source of line mechanism, thus on the premise of not affecting flat seaming machine automatic shearing performance so that flat seaming machine thread cutting mechanism whole
Body structure becomes simpler, compact, and flat seaming machine overall appearance is attractive in appearance, the heaviest.
Accompanying drawing explanation
Fig. 1 is the structural representation of flat seaming machine in prior art.
Fig. 2 is the structural representation of flat seaming machine in the application, and this figure is rearview.
Fig. 3 is the connection diagram in Fig. 2 medium power source and fork.
Fig. 4 is fork and the connection diagram of regulating block in Fig. 2.
Fig. 5 is upper cutter head in Fig. 2, connection diagram between upper moving knife and movable connecting rod.
Element numbers explanation
1 sewing machine case
2 upper cutter heads
Moving knife on 3
4 power sources
5 steel wire ropes
51 flanges
6 movable connecting rods
61 connecting rod gathering sills
7 forks
71 fixed arms
72 loose ends crank torque arm
8 steel wire rope overcoats
9 guider screws
10 first back-moving springs
11 regulating blocks
111 through holes
12 loose ends cranks
13 first regulation screws
14 moving knife strokes first regulate region
15 stop screws
16 limiting plates
17 second regulation screws
On 18, moving knife stroke second regulates region
19 moving knife gathering sills
20 supports
21 axis of guides
22 connecting plates
23 contiguous blocks
24 second back-moving springs
25 first fixed blocks
26 fixed plates
27 second fixed blocks
28 spring bases
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention being described 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 depicted in this specification institute accompanying drawings, ratio, size etc., the most only in order to coordinate description to be taken off
The content shown, understands for those skilled in the art and reads, being not limited to the enforceable qualifications of the present invention, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, do not affecting the present invention
Under the effect that can be generated by and the purpose that can reach, all should still fall and obtain, at disclosed technology contents, the model that can contain
In enclosing.Meanwhile, in this specification cited as " on ", D score, "left", "right", the term of " middle " and " " etc., be also only
Being easy to understanding of narration, and be not used to limit the enforceable scope of the present invention, being altered or modified of its relativeness, without essence
Under change technology contents, when being also considered as the enforceable category of the present invention.
In following example, all directions are defined as follows: the length direction of sewing machine is defined as left and right directions, by sewing machine
Width be defined as fore-and-aft direction, the short transverse of sewing machine is defined as above-below direction, therefore, fore-and-aft direction is simultaneously the most also
For sewing machine when sewing cloth, the moving direction of cloth.
The application provides the upper thread cutting mechanism of a kind of sewing machine, particularly flat seaming machine, and upper thread cutting mechanism is used for cutting flat-seam
Decorative thread in machine suture, flat seaming machine has lower thread cutting mechanism simultaneously, lower thread cutting mechanism face in cutting flat seaming machine suture
Line and bottom line, the lower thread cutting mechanism of flat seaming machine refers to the Chinese invention patent of Application No. 201410245745.4, therefore this Shen
Describe the most in detail in please.As in figure 2 it is shown, described upper thread cutting mechanism includes being arranged in sewing machine case 1 left end head panel
Upper cutter head 2, be arranged on upper cutter head 2 and moveable upper moving knife 3 and being arranged on sewing machine case 1 and for driving
The power source 4 of the lower thread cutting mechanism action of sewing machine, described power source 4 is connected by gear unit with upper moving knife 3 and drives
Upper moving knife 3 moves.Therefore, on the sewing machine that the application relates in thread cutting mechanism, drive the dynamic of upper thread cutting mechanism action by being used for
Power source is selected for driving the power source of lower thread cutting mechanism action, i.e. use a power source simultaneously drive thread cutting mechanism and under
Thread cutting mechanism, and then save the power source of upper thread cutting mechanism in prior art, thus do not affecting flat seaming machine automatic shearing performance
On the premise of so that the overall structure of flat seaming machine thread cutting mechanism becomes simpler, compact, and flat seaming machine overall appearance is attractive in appearance, no
Heavy.
Preferably, described power source 4 can select motor, electric magnet or cylinder etc., is fixedly mounted on sewing machine case 1
On, in the present embodiment, power source 4 preferably selects electric magnet or cylinder, therefore does not changes and descend in former flat seaming machine under thread cutting mechanism use
The structure of thread cutting mechanism action under trimming solenoid actuated, so that the upper thread cutting mechanism that the application relates to can be suitable for
In original flat seaming machine, reduce and original flat seaming machine is transformed required cost.It addition, each machine of sewing machine discussed below
In the embodiment of structure, power source 4 all uses electric magnet.
Further, described gear unit can be selected linkage, can also select steel wire rope 5 drive mechanism, in order to
Reducing cost and improve the aesthetics of sewing machine, described gear unit preferably employs steel wire rope 5 drive mechanism.Specifically, such as figure
Shown in 2 and Fig. 5, described gear unit includes that steel wire rope 5 and movable connecting rod 6, described movable connecting rod 6 are arranged on movably linearly
On described upper cutter head 2, the right-hand member of described steel wire rope 5 is fixed on the fork 7 in the lower thread cutting mechanism of sewing machine, described fork 7
By solenoid actuated and move linearly, the left end of described steel wire rope 5 is connected by screw is fixing with the upper end of movable connecting rod 6,
The lower end of movable connecting rod 6 is fixing with described upper moving knife 3 to be connected.
The concrete structure of described solenoid actuated fork 7 rectilinear movement is: as it is shown on figure 3, electric magnet includes outside electric magnet
Shell and the electromagnet core being located in electromagnet casing, sewing machine case 1 is fixed with one and is positioned at propping up above electromagnet casing
Frame 20, is supported with the axis of guide 21 that can move left and right, the telescopic direction phase of the axis of guide 21 and electromagnet core in this support 20
Parallel, and the left end of the axis of guide 21 passes through with the left end of electromagnet core, and a plate 22 is fixing to be connected；Described fork 7 includes
The loose ends crank torque arm 72 that the fixed arm 71 of lower extension and left and right extend, described loose ends crank torque arm 72 is used for and sewing machine
Middle loose ends crank 12 is connected, and the lower end of the fixed arm 71 of described fork 7 is fixed on the right side of the axis of guide 21 by a contiguous block 23
End.Meanwhile, connecting and have the first back-moving spring 10 between described movable connecting rod 6 and upper cutter head 2, this first back-moving spring 10 can be along fortune
The moving direction of dynamic connecting rod 6 is compressed axially or axial tension；A spring base 28 it is fixed with, this spring base 28 on the described axis of guide 21
And between support 20, it being provided with second back-moving spring 24 being enclosed within the axis of guide 21, this first back-moving spring 10 can be along the axis of guide 21
Moving direction be compressed axially or axial tension.
During non-trimming, electric magnet is in the original state of power-off, therefore electromagnet core is in the state stretched out to the left.Trimming
Time, the electronic control module of sewing machine makes electric magnet be energized, electromagnet core fast retractile to the right, and electromagnet core passes through connecting plate 22
Driving the axis of guide 21 synchronously to move right, the axis of guide 21 drives fork 7 synchronously to move right, and fork 7 is again by steel wire rope 5
Pull movable connecting rod 6 to move down to doing straight line near the direction of decorative thread, thus movable connecting rod 6 drive upper moving knife 3 synchronously to
Lower movement, it is achieved upper moving knife 3 cuts off decorative thread；Meanwhile, described first back-moving spring 10 is axially compressed, described in be enclosed within the axis of guide
The second back-moving spring 24 on 21 is axially compressed, therefore the first back-moving spring 10 and the second back-moving spring 24 are stage clip.Trimming
After end, the electronic control module of sewing machine makes electric magnet power-off, makes movable connecting rod 6 under the elastic force effect of the first back-moving spring 10
Reset with steel wire rope 5, under the elastic force effect of the second back-moving spring 24, make the axis of guide 21, electromagnet core, fork 7 and steel wire
Rope 5 reset.In order to ensure that movable connecting rod 6 drives upper moving knife 3 to do the stability and accuracy moved linearly, as it is shown in figure 5, described
It is fixed with guider screw 9 on upper cutter head 2, described movable connecting rod 6 offers a company extended along the moving direction of movable connecting rod 6
Bar gathering sill 61, described guider screw 9 is located in connecting rod gathering sill 61, the width of described connecting rod gathering sill 61 and guider screw
The diameter of 9 is suitable, and the head of guider screw 9 is more than connecting rod gathering sill 61 as outside and the diameter of connecting rod gathering sill 61
Width, therefore movable connecting rod 6 can be improved drive upper moving knife 3 to do straight line by cooperating of guider screw 9 and connecting rod gathering sill 61
The stability of movement and accuracy, thus improve the trimming performance of sewing machine.
It addition, in order to effectively protect steel wire rope 5 and avoid the interference to steel wire rope 5 of other parts, as in figure 2 it is shown, institute
Stating steel wire rope 5 to be located in movably in a steel wire rope overcoat 8, the right-hand member of steel wire rope overcoat 8 is fixed on the first fixed block 25,
This first fixed block 25 is fixed by screws in a fixed plate 26, and this fixed plate 26 is fixed by screws in sewing machine case 1
On, thus the right-hand member of steel wire rope overcoat 8 is fixed on sewing machine case 1.As it is shown in figure 5, the left end of steel wire rope overcoat 8 is fixed
On the second fixed block 27, this second fixed block 27 is fixed by screws on described upper cutter head 2, thus by steel wire rope overcoat 8
Left end be fixed on upper cutter head 2.
Further, electric magnet needs to simultaneously drive lower thread cutting mechanism and upper thread cutting mechanism, but lower thread cutting mechanism and on cut
The stroke of line mechanism is unequal, and in other words, the stroke of lower thread cutting mechanism is more than the stroke of upper thread cutting mechanism, therefore, such as Fig. 2 institute
Showing, the loose ends crank torque arm 72 of described fork 7 is connected by the first regulation screw 13 regulating block 11, and this regulating block 11 is by steel
Cord 5 is connected with fork 7, and can also regulate the stroke that fork 7 drives steel wire rope 5 to move.As shown in Figure 4, described regulating block
Offering about one through through hole 111 in 11, the right-hand member of described steel wire rope 5 is located in the through hole 111 of regulating block 11 and steel
Being provided with a flange 51 at the right part of cord 5, the diameter of described flange 51 is more than the diameter of through hole 111, therefore flange 51 can not be from
Through hole 111 passes through, forms upper moving knife stroke first between described flange 51 and regulating block 11 and regulate region 14.Unscrew the first tune
Save the adjustable regulating block 11 right position in the loose ends crank torque arm 72 of fork 7 after screw 13, and then adjustment is positioned at flange
Upper moving knife stroke first between 51 and regulating block 11 regulates region 14 length in the lateral direction, thus regulates fork 7 and carry
The distance that dynamic steel wire rope 5 moves, and then adjust movable connecting rod 6 and the rectilinear movement stroke of upper moving knife 3, this mode is generally used for seam
The regulation when machine of threading dispatches from the factory or use during moving knife 3 shift motion in regulation on a large scale.
Regulate the shift motion of upper moving knife 3 for the ease of user or the shift motion of upper moving knife 3 is carried out the tune of little scope
Joint, as it is shown in figure 5, described movable connecting rod 6 is connected by a stop screw 15 is fixing with upper moving knife 3, the lower end of described upper cutter head 2
Being also associated with a limiting plate 16, the upper end of described limiting plate 16 is matched with stop screw 15 (i.e. abutting), is used for limiting
Continuing traveling downwardly of upper moving knife 3；Described limiting plate 16 is connected by the second regulation screw 17 with upper cutter head 2, described limiting plate 16
Upper end and stop screw 15 between form upper moving knife stroke second and regulate region 18.Unscrew adjustable after the second regulation screw 17
On limiting section position on upper cutter head 2, and then adjustment, moving knife stroke second regulates region 18 on upper moving knife 3 moving direction
Length, thus adjust the rectilinear movement stroke of upper moving knife 3.
Preferably, between described limiting plate 16 and upper cutter head 2 formed one along upper moving knife 3 moving direction extend moving knife lead
To groove 19, described upper moving knife 3 is located in moving knife gathering sill 19 movably, is further ensured that moving knife 3 moves linearly steady
Qualitative.
In sum, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any ripe
Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage knowing this technology.Cause
This, have usually intellectual such as complete with institute under technological thought without departing from disclosed spirit in art
All equivalences become are modified or change, and must be contained by the claim of the present invention.
Claims (10)
1. a upper thread cutting mechanism for sewing machine, including the upper cutter head (2) being arranged on sewing machine case (1), is arranged on upper slitter
On seat (2) and movably go up moving knife (3) and be arranged on sewing machine case (1) and for driving the lower trimming of sewing machine
The power source (4) of mechanism action, it is characterised in that: described power source (4) be connected with upper moving knife (3) by gear unit and
In driving, moving knife (3) is mobile.
Upper thread cutting mechanism the most according to claim 1, it is characterised in that: described power source (4) is electric magnet or cylinder.
Upper thread cutting mechanism the most according to claim 1, it is characterised in that: described gear unit includes steel wire rope (5) and fortune
Dynamic connecting rod (6), described movable connecting rod (6) is arranged on described upper cutter head (2) movably linearly, the one of described steel wire rope (5)
End is fixed on the fork (7) in the lower thread cutting mechanism of sewing machine, and described fork (7) is driven by power source (4) and moves linearly,
One end of the other end of described steel wire rope (5) and movable connecting rod (6) is fixing to be connected, the other end of movable connecting rod (6) and described on
Moving knife (3) is fixing to be connected.
Upper thread cutting mechanism the most according to claim 3, it is characterised in that: described steel wire rope (5) is located in one movably
In steel wire rope overcoat (8), one end of described steel wire rope overcoat (8) is fixed on sewing machine case (1), steel wire rope overcoat (8)
The other end is fixed on upper cutter head (2).
Upper thread cutting mechanism the most according to claim 3, it is characterised in that: described upper cutter head is fixed with guider screw on (2)
(9), described movable connecting rod (6) offers a connecting rod gathering sill (61) extended along the moving direction of movable connecting rod (6), described
Guider screw (9) is located in connecting rod gathering sill (61).
Upper thread cutting mechanism the most according to claim 3, it is characterised in that: between described movable connecting rod (6) and upper cutter head (2)
Connect have the first back-moving spring (10), this first back-moving spring (10) can be compressed axially along the moving direction of movable connecting rod (6) or
Axial tension.
Upper thread cutting mechanism the most according to claim 3, it is characterised in that: described steel wire rope (5) and fork (7) are by a tune
Locking nub (11) is connected, described fork (7) include the fixed arm (71) that is connected with power source (4) and with pine in sewing machine
Loose ends crank torque arm (72) that line crank (12) is connected, described loose ends crank torque arm (72) is along the rectilinear movement side of fork (7)
To extension, described regulating block (11) is arranged on loose ends crank torque arm (72) by the first regulation screw (13)；Described regulating block
(11) through hole (111) running through regulating block (11) along the rectilinear movement direction of fork (7), described steel wire rope (5) are offered in
One end be located in the through hole (111) of regulating block (11) and this end of steel wire rope (5) is provided with a flange (51), described
The diameter of flange (51), more than the diameter of through hole (111), forms upper moving knife stroke between described flange (51) and regulating block (11)
First regulation region (14).
Upper thread cutting mechanism the most according to claim 3, it is characterised in that: described movable connecting rod (6) passes through with upper moving knife (3)
One stop screw (15) is fixing to be connected, and the lower end of described upper cutter head (2) is also associated with a limiting plate (16), described limiting plate (16)
Upper end match with stop screw (15), for limiting the descending of upper moving knife (3).
Upper thread cutting mechanism the most according to claim 8, it is characterised in that: described limiting plate (16) passes through with upper cutter head (2)
Second regulation screw (17) is connected, and is formed and go up moving knife stroke the between upper end and the stop screw (15) of described limiting plate (16)
Two regulations region (18).
Upper thread cutting mechanism the most according to claim 8, it is characterised in that: between described limiting plate (16) and upper cutter head (2)
Forming a moving knife gathering sill (19) extended along the moving direction of upper moving knife (3), described upper moving knife (3) is located in dynamic movably
In cutter gathering sill (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610397678.7A CN105970506B (en) | 2016-06-07 | 2016-06-07 | A kind of upper thread cutting mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610397678.7A CN105970506B (en) | 2016-06-07 | 2016-06-07 | A kind of upper thread cutting mechanism of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105970506A true CN105970506A (en) | 2016-09-28 |
| CN105970506B CN105970506B (en) | 2018-12-04 |
Family
ID=57011057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610397678.7A Active CN105970506B (en) | 2016-06-07 | 2016-06-07 | A kind of upper thread cutting mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105970506B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893290A (en) * | 2017-12-28 | 2018-04-10 | 杰克缝纫机股份有限公司 | A kind of thread cutting mechanism and sewing machine |
| CN109930312A (en) * | 2017-12-16 | 2019-06-25 | 杰克缝纫机股份有限公司 | A kind of lower thread cutting mechanism that cylinder directly drives |
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| JP2008212443A (en) * | 2007-03-06 | 2008-09-18 | Brother Ind Ltd | Sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109930312A (en) * | 2017-12-16 | 2019-06-25 | 杰克缝纫机股份有限公司 | A kind of lower thread cutting mechanism that cylinder directly drives |
| CN109930312B (en) * | 2017-12-16 | 2021-06-01 | 杰克缝纫机股份有限公司 | Lower trimming mechanism directly driven by cylinder |
| CN107893290A (en) * | 2017-12-28 | 2018-04-10 | 杰克缝纫机股份有限公司 | A kind of thread cutting mechanism and sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105970506B (en) | 2018-12-04 |
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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. |