CN104032497B - The built-in automatic shearing mechanism of Sewing machines - Google Patents
The built-in automatic shearing mechanism of Sewing machines Download PDFInfo
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- CN104032497B CN104032497B CN201410288797.XA CN201410288797A CN104032497B CN 104032497 B CN104032497 B CN 104032497B CN 201410288797 A CN201410288797 A CN 201410288797A CN 104032497 B CN104032497 B CN 104032497B
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Abstract
The invention provides a kind of built-in automatic shearing mechanism of Sewing machines, comprise drive source, Sewing machines main casing, Sewing machines main casing rear wall is provided with depressed part, and drive source is located in this depressed part; The telescopic shaft of drive source is flexibly connected with the first lever, first lever one end and Sewing machines main casing hinged, the other end and second connecting rod one end hinged; The second connecting rod other end and second lever one end hinged, the second lever other end is vertical with cutter shaft to be fixed; Cutter shaft is supported in tool rest rotationally, and tool rest is fixed on the side of the contiguous eedle of Sewing machines main casing; Cutter shaft one end is fixed with moving knife vertical with it, and moving knife is near the front side wall of Sewing machines main casing, and relative with the stationary knife of tool rest; Rear casing is fixed with outside the depressed part of Sewing machines main casing rear wall.Based on articulated form between each actuator of the present invention, stable drive, noise are little, and drive source stroke is little, volume is little, make thread cutting mechanism realize built-in at Sewing machines main casing, make Sewing machines complete machine attractive in appearance.
Description
Technical field
The present invention relates to technical field of sewing equipment, particularly relate to a kind of built-in automatic shearing mechanism of Sewing machines.
Background technology
Along with the develop rapidly of science and technology, the mechanization degree that clothes manufacture is more and more higher, and in clothes making technology for making field, the sewing device based on Sewing machines is very many, such as flat seam machine, overlock machine, flat seaming machine etc.
Overlock machine is named again beats sidecar, edge machine, and its major function prevents the margin to seam of clothes from fluffing, and the stitching of overlock machine is mesh-shape, overlock machine can not only be used for bound edge, can also be applied to and sew up T-shirt, sportswear, underwear, the fabric such as knitting, of many uses, be the indispensable sewing device in large-scale clothing factory.
The automatic shearing mechanism of the overlock machine of prior art is slidingtype, electromagnet as drive source is connected with slider pin, slider pin is connected with tool rest connecting crank, in electromagnet motion process, noise is very large, and the stroke of electromagnet is also very large, cause electromagnet volume large, the installing space demand of the automatic shearing mechanism of overlock machine is large, cause the volume of overlock machine large, make the profile of overlock machine attractive in appearance not, and the shell of electromagnet need adopt electroplating technology, thus the manufacturing cost of electromagnet is high, make the deployment cost of the automatic shearing mechanism of overlock machine high, finally cause the production cost of overlock machine high.
Summary of the invention
The shortcoming of prior art in view of the above, the technical problem to be solved in the present invention is to provide that a kind of noise is little, volume is little, make the built-in automatic shearing mechanism of the Sewing machines that overlock machine complete machine effect is attractive in appearance, to overcome the above-mentioned defect of prior art.
In order to solve the problems of the technologies described above, the invention provides a kind of built-in automatic shearing mechanism of Sewing machines, comprising drive source, the first lever, the second lever, first connecting rod, second connecting rod, cutter shaft, moving knife, tool rest, Sewing machines main casing, rear casing;
Described Sewing machines main casing comprises the column housing of base housing and top thereof, is provided with a depressed part on the rear wall of described base housing, in the below of described column housing;
Described drive source is located in described depressed part, and described drive source comprises the flexible telescopic shaft of above-below direction; The upper end of described telescopic shaft is flexibly connected with described first lever, one end of described first lever and described column housing hinge, the other end of described first lever and one end of described second connecting rod hinged, the other end of described second connecting rod and one end of described second lever hinged, the other end of described second lever is vertical with described cutter shaft to be fixed;
Described cutter shaft is supported in described tool rest rotationally, and described tool rest is fixed on the side of the contiguous eedle of described column housing;
Described moving knife is vertically fixed on one end of described cutter shaft, and the front side wall of close described Sewing machines main casing, described moving knife is relative with the stationary knife of described tool rest;
Described rear casing is located at the outside of described depressed part, the bottom of described rear casing and the rear wall bottom-hinged of described base housing, and the top of described rear casing is fixed by the rear wall of securing member and described column housing.
Preferably, described drive source comprises electromagnet and is located at the iron core of electromagnet endoporus, the telescopic shaft of described iron core and described drive source.
Preferably, back-moving spring is provided with between described electromagnet and iron core.
Preferably, bottom the rear wall of described base housing, be provided with hinge seat, the bottom of described rear casing by bearing pin and described hinge seat hinged.
Preferably, also to comprise before tool rest fixed mount after fixed mount and tool rest, described tool rest is fixed by fixed mount after fixed mount before tool rest and tool rest and described column housing.
Alternatively, the upper end of described telescopic shaft is realized by first connecting rod with being flexibly connected between described first lever, one end of described first connecting rod and the upper end thereof of described telescopic shaft, and the other end and described first lever of described first connecting rod are hinged.
Alternatively, the upper end of described telescopic shaft is realized with coordinating of bearing pin by mounting hole with being flexibly connected between described first lever.
As mentioned above, the built-in automatic shearing mechanism of a kind of Sewing machines of the present invention, has following beneficial effect:
Be main all in an articulated manner between each driving member of 1, drive source telescopic shaft, the first lever, the second lever, second connecting rod, thus in the telescopic process up and down of drive source telescopic shaft, stable drive, noise are little, and drive source stroke is little, thus the volume of drive source is little, financial cost is low, few to the demand of installing space, drive source is enable to be installed on the recessed area of Sewing machines main casing rear wall, make automatic shearing mechanism realize built-in at Sewing machines by the setting of rear casing again, make Sewing machines complete machine effect attractive in appearance; Rear casing also plays dustproof effect, and the built-in automatic shearing mechanism of Sewing machines is not easily damaged.The present invention not only can be used for overlock machine, also can be used for other Sewing machines such as flat seam machine, flat seaming machine, of many uses.
2, drive source adopts electromagnet structure, makes trimming action of the present invention quick, accurate, reliable and stable.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of the built-in automatic shearing mechanism of Sewing machines of the present invention.
The built-in automatic shearing mechanism that Fig. 2 is shown as Sewing machines of the present invention removes the structural representation after Sewing machines main casing in embodiment one.
The built-in automatic shearing mechanism that Fig. 3 is shown as Sewing machines of the present invention removes the structural representation after Sewing machines main casing and rear casing in embodiment one.
The built-in automatic shearing mechanism that Fig. 4 is shown as Sewing machines of the present invention removes the structural representation after Sewing machines main casing, rear casing and tool rest in embodiment one.
The built-in automatic shearing mechanism that Fig. 5 is shown as Sewing machines of the present invention removes the structural representation after Sewing machines main casing, rear casing and tool rest in embodiment two.
Element numbers explanation
100 drive source 110 telescopic shafts
111 bearing pin 210 first levers
211 bearing pin 212 mounting holes
220 second lever 230 first connecting rods
240 second connecting rod 241 bearing pins
242 bearing pin 310 cutter shafts
320 moving knife 330 tool rests
Fixed mount after fixed mount 332 tool rest before 331 tool rests
333 stationary knife 410 Sewing machines main casings
411 base housing 411a depressed parts
412 column housing 420 rear casings
421 hinge seat 422 bearing pins
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present invention and effect easily.
Refer to Fig. 1 to Fig. 5.Notice, structure, ratio, size etc. that this description institute accompanying drawings illustrates, content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this description as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
Automatic shearing mechanism in view of the overlock machine of prior art is slidingtype, electromagnet as drive source is connected with slider pin, slider pin is connected with tool rest connecting crank, in electromagnet motion process, noise is very large, and the stroke of electromagnet is also very large, cause electromagnet volume large, the installing space demand of the automatic shearing mechanism of overlock machine is large, cause the volume of overlock machine large, make the profile of overlock machine attractive in appearance not, and the shell of electromagnet need adopt electroplating technology, thus the manufacturing cost of electromagnet is high, make the deployment cost of the automatic shearing mechanism of overlock machine high, finally cause the production cost of overlock machine high.The present inventor designs a kind of built-in automatic shearing mechanism of Sewing machines, each driving member is made to realize mutual transmission mainly through hinged mode, thus stable drive, noise are little, and drive source stroke is little, make that the volume of drive source is little, financial cost is low, few to the demand of installing space, drive source is enable to be installed on the depressed part of Sewing machines main casing rear wall, again by arranging main casing built-in that rear casing enables the automatic shearing mechanism of Sewing machines realize at Sewing machines (comprising overlock machine), make Sewing machines complete machine effect attractive in appearance; In addition, the setting of rear casing also plays dustproof effect, and the built-in automatic shearing mechanism of Sewing machines is not easily damaged.
Below, be described in detail by the built-in automatic shearing mechanism of specific embodiment to Sewing machines of the present invention.
Embodiment one
As Figure 1 and Figure 4, a built-in automatic shearing mechanism for Sewing machines, comprises drive source 100, first lever 210, second lever 220, first connecting rod 230, second connecting rod 240, cutter shaft 310, moving knife 320, tool rest 330, Sewing machines main casing 410, rear casing 420.
Described Sewing machines main casing 410 comprises the column housing 412 of base housing 411 and top thereof, wherein, forms a depressed part 411a on the rear wall of the base housing 411 of described Sewing machines, in the below of described column housing 412.
Described drive source 100 is arranged in described depressed part 411a.As shown in Figures 2 to 4, described drive source 100 comprises the flexible telescopic shaft 110 of above-below direction, the upper end of described telescopic shaft 110 and one end of described first connecting rod 230 realize hinged by bearing pin 111, the other end of described first connecting rod 230 and one end of described first lever 210, one end of second connecting rod 240 all realizes hinged by bearing pin 242, thus first connecting rod 230 makes the upper end of described telescopic shaft 110 realize being flexibly connected with described first lever 210, bearing pin 242 makes one end of one end of the first lever 210 and second connecting rod 240 hinged, the other end and the described column housing 412 of described first lever 210 realize hinged by bearing pin 211, the other end of described second connecting rod 240 and one end of described second lever 220 realize hinged by bearing pin 241, the other end of described second lever 220 is fixedly connected with described cutter shaft 310 is vertical.
As shown in Figure 1 to Figure 3, described cutter shaft 310 is supported in described tool rest 330 rotationally, and described tool rest 330 is fixed on the side of the contiguous eedle (not shown) of described column housing 412.Described moving knife 320 is vertically fixed on one end of described cutter shaft 310, and the front side wall of close described Sewing machines main casing 410, described moving knife 320 is relative with the stationary knife 333 of described tool rest 330.
As shown in Figure 1, described rear casing 420 is located at the outside of described depressed part 411a, can described drive source 100, first lever 210, second lever 220, first connecting rod 230, second connecting rod 240 be enclosed in wherein, the bottom of described rear casing 420 and the rear wall bottom-hinged of described base housing 411, the top of described rear casing 420 is fixed by the rear wall of securing member and described column housing 412.
From the above, drive source telescopic shaft 110 of the present invention, first lever 210, second lever 220, first connecting rod 230, hinged form is all adopted between each driving member of second connecting rod 240, thus in the telescopic process up and down of drive source telescopic shaft 110, stable drive, noise is little, and the stroke of drive source telescopic shaft 110 is little, thus the volume of drive source 100 is little, financial cost is low, few to the demand of installing space, make described drive source 100 can be installed in the depressed part 411a of base housing 411 rear wall, the automatic shearing mechanism of Sewing machines is made to realize built-in at Sewing machines main casing 410 by the setting of rear casing 420 again, specific to overlock machine, the automatic shearing mechanism stable drive of overlock machine can be made, noise is little, realize built-in at overlock machine main casing of automatic shearing mechanism, and the setting of rear casing 420 also plays dustproof effect, the built-in automatic shearing mechanism of overlock machine is not easily damaged, also make overlock machine complete machine effect attractive in appearance, be convenient to packaging and transport.
In order to ensure that the built-in automatic shearing mechanism of Sewing machines of the present invention is quick on the draw, trimming action is quick, accurate, reliable and stable, as shown in Figures 2 to 4, preferably, described drive source 100 comprises electromagnet and is located at the iron core of electromagnet endoporus, the telescopic shaft 110 of described iron core and described drive source.Certain described axis of guide drive source 100 also can adopt hydraulic cylinder or cylinder, telescopic shaft 110 is served as by the piston rod of hydraulic cylinder or cylinder, first connecting rod 230, first lever 210 can be driven equally, second connecting rod 240, second lever 220 drives described cutter shaft 310 to rotate, moving knife 320 is moved relative to the stationary knife 333 of tool rest 330, completes trimming action.
When described drive source 100 adopts electromagnet and be located at the form of iron core of electromagnet endoporus, in order to ensure after trimming release, described cutter shaft 310 can drive described moving knife 320 to reset rapidly, timely, preferably, between described electromagnet and iron core, be provided with back-moving spring (not shown), after electromagnet dead electricity, under the effect of back-moving spring, iron core resets rapidly, drives described cutter shaft 310 to turn round rapidly, drives described moving knife 320 to reset rapidly, in time.
As shown in Figure 1 and Figure 2, because the volume of described rear casing 420 is large, weight is large, opening to make described rear casing 420 be convenient to, closing, so that the maintenance of overlock machine and nursing, and make described rear casing 420 hinge point in open and close process durable in use, not fragile, preferably, hinged between bottom the bottom of described rear casing 420 and the rear wall of described base housing 411 is realized by following structure: be provided with hinge seat 421 bottom the rear wall of described base housing 411, the bottom of described rear casing 420 is hinged by bearing pin 422 and described hinge seat 421.Certainly, hinged between bottom the rear wall of described rear casing 420 and described base housing 411 also can by installing conventional hinge to realize, in a word, as long as make to realize bottom the bottom of described rear casing 420 and the rear wall of described base housing 411 hinged.
In order to make described tool rest 330 structure simple, be convenient to manufacture, save material and production cost, and be convenient to install, as shown in Figure 1 to Figure 3, the built-in automatic shearing mechanism of Sewing machines of the present invention also to comprise before tool rest fixed mount 332 after fixed mount 331 and tool rest, and described tool rest 330 is fixed by fixed mount 332 after fixed mount 331 before tool rest and tool rest and described column housing 412.
Embodiment two
The built-in automatic shearing mechanism of the Sewing machines of the present embodiment is substantially identical with the version of embodiment one, as shown in Figure 5, the upper end of described telescopic shaft 110 is realized with coordinating of bearing pin 111 by mounting hole 212 with being flexibly connected between described first lever 210 in the difference of itself and embodiment one; Wherein said mounting hole 212 is located on described first lever 210, and described bearing pin 111 is connected with the upper end of described telescopic shaft 110 through described mounting hole 212.Described mounting hole 212 can certainly be located at the upper end of described telescopic shaft 110, described bearing pin 111 is connected with described first lever 210, the upper end of described telescopic shaft 110 and being flexibly connected between described first lever 210 can be realized equally.
The operation principle of the built-in automatic shearing mechanism of Sewing machines of the present invention is: when not carrying out trimming action, the telescopic shaft 110 of described drive source 100 is in retracted state, described moving knife 320 is in separated position with the stationary knife 333 of described tool rest 330, adopt electromagnet for drive source 100 and be located at the form of iron core of electromagnet endoporus, electromagnet is in power failure state, under the effect of described back-moving spring, described iron core and telescopic shaft 110 are in retracted mode; When needs carry out trimming action, the electric-control system of overlock machine sends instruction, electromagnet is energized, the resistance that then described iron core overcomes back-moving spring under electromagnet magneticaction stretches out fast, described first lever 210 is driven to move up with the pin joint of second connecting rod 240, thus second connecting rod 240 drives described second lever 220, described second lever 220 is made to drive described cutter shaft 310 to rotate, described cutter shaft 310 drives again described moving knife 320 to rotate, make moving knife 320 and stationary knife 333 twisting of tool rest 330, the suture of Sewing machines is cut off.There is deformation in stretching out in process fast of iron core in back-moving spring, produces elastic potential energy; After trimming completes, electromagnet dead electricity, described back-moving spring is when losing external force, and release elastic potential energy, drives electromagnet core to reset, thus makes the first lever 210, second lever 220, second connecting rod 240 realize resetting, and waits for trimming action next time.
In sum, the built-in automatic shearing mechanism of Sewing machines of the present invention, stable drive, noise are little, and drive source stroke is little, volume is little, financial cost is low, few to the demand of installing space, enable drive source be installed on the recessed area of Sewing machines main casing rear wall, then make automatic shearing mechanism realize built-in at Sewing machines by the setting of rear casing, make Sewing machines complete machine effect attractive in appearance.In addition, rear casing also plays dustproof effect, and the built-in automatic shearing mechanism of Sewing machines is not easily damaged.The present invention not only can be used for overlock machine, also can be used for other Sewing machines such as flat seam machine, flat seaming machine, of many uses.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (7)
1. the built-in automatic shearing mechanism of a Sewing machines, it is characterized in that, comprise drive source (100), the first lever (210), the second lever (220), second connecting rod (240), cutter shaft (310), moving knife (320), tool rest (330), Sewing machines main casing (410), rear casing (420);
Described Sewing machines main casing (410) comprises the column housing (412) of base housing (411) and top thereof, is provided with a depressed part (411a) on the rear wall of described base housing (411), in the below of described column housing (412);
Described drive source (100) is located in described depressed part (411a), and described drive source (100) comprises the flexible telescopic shaft (110) of above-below direction; The upper end of described telescopic shaft (110) is flexibly connected with described first lever (210), one end and the described column housing (412) of described first lever (210) are hinged, the other end of described first lever (210) and one end of described second connecting rod (240) hinged, the other end of described second connecting rod (240) and one end of described second lever (220) hinged, the other end of described second lever (220) is vertical with described cutter shaft (310) to be fixed;
Described cutter shaft (310) is supported in described tool rest (330) rotationally, and described tool rest (330) is fixed on the side of the contiguous eedle of described column housing (412);
Described moving knife (320) is vertically fixed on one end of described cutter shaft (310), and the front side wall of close described Sewing machines main casing (410), described moving knife (320) is relative with the stationary knife (333) of described tool rest (330);
Described rear casing (420) is located at the outside of described depressed part (411a), the bottom of described rear casing (420) and the rear wall bottom-hinged of described base housing (411), the top of described rear casing (420) is fixed by the rear wall of securing member and described column housing (412).
2. the built-in automatic shearing mechanism of Sewing machines according to claim 1, it is characterized in that: described drive source (100) comprises electromagnet and is located at the iron core of electromagnet endoporus, the telescopic shaft (110) of described iron core and described drive source.
3. the built-in automatic shearing mechanism of Sewing machines according to claim 2, is characterized in that: be provided with back-moving spring between described electromagnet and iron core.
4. according to the built-in automatic shearing mechanism of the arbitrary described Sewing machines of claims 1 to 3, it is characterized in that: be provided with hinge seat (421) bottom the rear wall of described base housing (411), the bottom of described rear casing (420) is hinged by bearing pin (422) and described hinge seat (421).
5. according to the built-in automatic shearing mechanism of the arbitrary described Sewing machines of claims 1 to 3, it is characterized in that: also to comprise before tool rest fixed mount (332) after fixed mount (331) and tool rest, described tool rest (330) is fixed by fixed mount (332) after fixed mount before tool rest (331) and tool rest and described column housing (412).
6. according to the built-in automatic shearing mechanism of the arbitrary described Sewing machines of claims 1 to 3, it is characterized in that: the upper end of described telescopic shaft (110) is realized by first connecting rod (230) with being flexibly connected between described first lever (210), one end of described first connecting rod (230) and the upper end thereof of described telescopic shaft (110), the other end and described first lever (210) of described first connecting rod (230) are hinged.
7., according to the built-in automatic shearing mechanism of the arbitrary described Sewing machines of claims 1 to 3, it is characterized in that: the upper end of described telescopic shaft (110) is realized with coordinating of bearing pin (111) by mounting hole (212) with being flexibly connected between described first lever (210).
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| CN201410288797.XA CN104032497B (en) | 2014-06-24 | 2014-06-24 | The built-in automatic shearing mechanism of Sewing machines |
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| CN201410288797.XA CN104032497B (en) | 2014-06-24 | 2014-06-24 | The built-in automatic shearing mechanism of Sewing machines |
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| CN104032497B true CN104032497B (en) | 2015-12-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106222902A (en) * | 2016-09-27 | 2016-12-14 | 台州普西玛智能科技有限公司 | Overedger tangential knife slip swinging connection mechanism |
| CN108060512B (en) * | 2018-01-29 | 2020-11-24 | 叶国宝 | Automatic cloth cutting and edge strip breaking edge covering sewing machine |
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| US4934293A (en) * | 1987-12-28 | 1990-06-19 | Pegasus Sewing Machine Mfg., Co., Ltd. | Chaining thread sew-in device |
| US5009177A (en) * | 1988-10-21 | 1991-04-23 | Ssmc Inc. | Thread cutting unit having a rotatably driveable cutting knife and loop spreading plate for a sewing machine |
| CN101413184A (en) * | 2007-10-16 | 2009-04-22 | 阮孟定 | Numerical control automatic trimming overedger |
| CN101956299A (en) * | 2010-09-06 | 2011-01-26 | 凯诺科技股份有限公司 | Overedger |
| CN103266428A (en) * | 2013-05-15 | 2013-08-28 | 苏州市正步机器制造有限公司 | Rapid trimming device applied to quilting machine |
| CN203904648U (en) * | 2014-06-24 | 2014-10-29 | 新杰克缝纫机股份有限公司 | Built-in type automatic thread trimming mechanism of sewing machine |
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| JPS5949035B2 (en) * | 1977-12-23 | 1984-11-30 | ブラザー工業株式会社 | Cutter device for sewing machine |
| JPS61234893A (en) * | 1986-03-04 | 1986-10-20 | ジャガー株式会社 | Movable knife driver in overlock sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4934293A (en) * | 1987-12-28 | 1990-06-19 | Pegasus Sewing Machine Mfg., Co., Ltd. | Chaining thread sew-in device |
| US5009177A (en) * | 1988-10-21 | 1991-04-23 | Ssmc Inc. | Thread cutting unit having a rotatably driveable cutting knife and loop spreading plate for a sewing machine |
| CN101413184A (en) * | 2007-10-16 | 2009-04-22 | 阮孟定 | Numerical control automatic trimming overedger |
| CN101956299A (en) * | 2010-09-06 | 2011-01-26 | 凯诺科技股份有限公司 | Overedger |
| CN103266428A (en) * | 2013-05-15 | 2013-08-28 | 苏州市正步机器制造有限公司 | Rapid trimming device applied to quilting machine |
| CN203904648U (en) * | 2014-06-24 | 2014-10-29 | 新杰克缝纫机股份有限公司 | Built-in type automatic thread trimming mechanism of sewing machine |
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Address after: 318010 Taizhou Airport Road, Jiaojiang District, Zhejiang, No. 15 Applicant after: JACK SEWING MACHINE CO., LTD. Address before: 318010 Taizhou Airport Road, Jiaojiang District, Zhejiang, No. 15 Applicant before: New Jack Sewing Machine Co., Ltd. |
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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. |
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