CN113699706A - Sealed take-up mechanism and sewing machine - Google Patents
Sealed take-up mechanism and sewing machine Download PDFInfo
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- CN113699706A CN113699706A CN202010442170.0A CN202010442170A CN113699706A CN 113699706 A CN113699706 A CN 113699706A CN 202010442170 A CN202010442170 A CN 202010442170A CN 113699706 A CN113699706 A CN 113699706A
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- thread
- thread take
- sewing machine
- take
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B49/00—Take-up devices, e.g. levers, for the needle thread
Abstract
The invention provides a sealed thread take-up mechanism which comprises a driving source, a thread take-up transmission unit, a thread take-up piece and a plurality of thread passing components, wherein the thread take-up transmission unit is arranged inside a sewing machine shell, the thread take-up component is arranged outside the sewing machine shell, a thread passing part for allowing a thread to pass through is arranged on the thread take-up piece, the driving source is connected with the thread take-up piece through the thread take-up transmission unit and drives the thread take-up piece to swing back and forth around a rotating central axis vertical to a main shaft in the sewing machine, and the thread take-up piece is rotatably arranged on the sewing machine shell and is positioned on the same side of the sewing machine shell as the thread passing components. In the application, the thread take-up piece is rotatably arranged on the shell of the sewing machine, and the thread take-up function is realized through the reciprocating swing motion of the thread take-up piece; because the motion mode of the thread take-up piece is reciprocating swing, a long groove which is communicated with the inside and the outside is not required to be arranged in the sewing machine shell, so that the sewing machine shell is in a sealed state at the thread take-up mechanism, and the lubricating oil in the sewing machine shell can be effectively prevented from splashing and external sundries can be effectively prevented from entering the inside of the sewing machine shell.
Description
Technical Field
The invention relates to a sealed thread take-up mechanism.
The invention also relates to a sewing machine comprising the sealed take-up mechanism.
Background
At present, a thread take-up mechanism is provided in a sewing machine, and as shown in fig. 1 and 2, a conventional thread take-up mechanism includes a first thread tension device 70, a thread take-up plate 80, a right thread hook 90, a second thread tension device 110, a thread take-up lever 130, and a left thread hook 120, a thread 140 passes through the first thread tension device 70, the thread take-up plate 80, the second thread tension device 110, the right thread hook 90, the thread take-up lever 130, and the left thread hook 120 in sequence, and the thread take-up lever 130 reciprocates up and down, thereby realizing a thread take-up function. However, the thread take-up mechanism of the sewing machine has the following defects: since the thread take-up lever 130 is reciprocated up and down, a long groove 21 extending up and down must be formed in the housing 20 of the sewing machine, the thread take-up lever 130 is accommodated in the long groove 21, the length of the long groove 21 is required to satisfy the swinging amplitude of the thread take-up lever 130, and the long groove 21 communicates the inside and the outside of the housing 20. Therefore, the provision of the long groove 21 makes the thread take-up mechanism a non-sealing structure, which inevitably causes the following problems: 1. the lubricant inside the housing 20 splashes out of the long groove 21 along with the movement of the take-up lever 130, causing pollution; 2. external impurities (such as thread ends, cotton wool, dust and the like) can enter the interior of the machine shell 20 along the long groove 21, so that lubrication is affected, and even the moving parts in the machine shell 20 can be locked seriously.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art, an object of the present invention is to provide a sealed thread take-up mechanism capable of preventing the lubricant oil inside the casing from splashing out and preventing foreign objects from entering the casing.
In order to achieve the purpose, the invention provides a sealed thread take-up mechanism which comprises a driving source, a thread take-up transmission unit, a thread take-up piece and a plurality of thread passing components, wherein the thread take-up transmission unit is arranged inside a sewing machine shell, the thread take-up component is arranged outside the sewing machine shell, a thread passing part for allowing a thread to pass through is arranged on the thread take-up piece, the driving source is connected with the thread take-up piece through the thread take-up transmission unit and drives the thread take-up piece to swing back and forth around a rotating central axis vertical to a main shaft in the sewing machine, and the thread take-up piece is rotatably arranged on the sewing machine shell and is positioned on the same side of the sewing machine shell with the thread passing components.
Further, the thread take-up part is provided with a rotating shaft part extending along the axial direction of the rotating central axis, a connecting part arranged at the end part of the rotating shaft part and positioned outside the sewing machine shell, and a thread take-up part connected with the connecting part and positioned outside the sewing machine shell, wherein the rotating shaft part is rotatably supported in the sewing machine shell through a first shaft sleeve and connected with the thread take-up transmission unit, and the thread take-up part is a thread hook arranged on the outer edge side of the thread take-up part.
Furthermore, the line-drawing part is fan-shaped, the periphery of the line-drawing part is provided with a plurality of rotatable rollers, the line hook and the rollers are sequentially arranged along the circumferential direction of the line-drawing part, and the rollers can be in contact with the suture.
Further, the outer diameter of the connecting part is larger than that of the first shaft sleeve.
Further, the thread take-up transmission unit comprises a driving shaft which extends axially along the central rotating axis and is driven to rotate by a driving source, a driving crank fixed on the driving shaft, a connecting rod and a connecting crank fixed on the rotating shaft part of the thread take-up piece, wherein two ends of the connecting rod are respectively hinged with the driving crank and the connecting crank, and two ends of the driving shaft are rotatably supported in the sewing machine shell through a second shaft sleeve.
Furthermore, the thread take-up part is provided with a connecting part and a thread take-up part, the connecting part is positioned outside the sewing machine shell, the thread take-up part is connected with the connecting part and positioned outside the sewing machine shell, the connecting part is connected with the thread take-up transmission unit, and the thread passing part is a thread passing hole formed in the outer edge side of the thread take-up part.
Further, the thread take-up transmission unit includes a drive shaft extending axially along the rotation central axis and driven to rotate by a drive source, both ends of the drive shaft are rotatably supported in the sewing machine housing by a second bushing, and the connecting portion of the thread take-up member is fixed to the end of the drive shaft.
Further, the driving source is a motor.
Further, a plurality of line parts of crossing include first thread trapper, take-up board, right side line colludes, second thread trapper and left side line colludes, the suture loops through the line hole, second thread trapper on first thread trapper, the take-up board on the line groove, the line portion of crossing on the take-up piece and the line groove of crossing on the left side line colludes.
The application also provides a sewing machine, wherein the sealed thread take-up mechanism is configured in the sewing machine.
As described above, the sealed thread take-up mechanism and the sewing machine according to the present invention have the following advantages:
in the application, the thread take-up piece is rotatably arranged on the shell of the sewing machine, and the thread take-up function is realized through the reciprocating swing motion of the thread take-up piece; because the motion mode of the thread picking piece is reciprocating swing, a long groove which is communicated with the inside and the outside frequently does not need to be formed in the sewing machine shell, so that the sewing machine shell is in a sealed state at the thread picking mechanism, the lubricating oil in the sewing machine shell can be effectively prevented from splashing, external sundries can be effectively prevented from entering the inside of the sewing machine shell, and the performance of the sewing machine is further improved.
Drawings
Fig. 1 and 2 are schematic structural views of a thread take-up mechanism of a sewing machine in the prior art.
FIG. 3 is a schematic structural diagram of a sealed thread take-up mechanism according to an embodiment of the present application.
Fig. 4 is a schematic structural view of fig. 3 without a sewing machine housing.
Fig. 5 is a schematic view showing the connection between the driving source, the thread take-up transmission unit and the thread take-up member in fig. 3.
Fig. 6 is a schematic structural view of the wire picking member in fig. 3.
Fig. 7 is a state diagram of the thread take-up member of fig. 3 in a maximum swing angle, extreme position.
Fig. 8 is a state view of the thread take-up member of fig. 3 in an initial position where the swing angle is minimized.
Fig. 9 and 10 are schematic views showing the change of the effective winding angle of the thread take-up member in fig. 3 at different rotation angles.
FIG. 11 is a schematic structural diagram of a second embodiment of the sealed thread take-up mechanism of the present application.
Fig. 12 is a schematic structural view of fig. 11 without a sewing machine housing.
Description of the element reference numerals
10 driving source
20 casing
21 long groove
30 take-up member
31 wire passing part
32 rotating shaft part
33 connecting part
34 thread take-up part
35 roller
40 first shaft sleeve
51 drive shaft
52 drive crank
53 connecting rod
54 connecting crank
60 second shaft sleeve
70 first wire gripper
80 take-up board
90 right line hook
110 second wire holder
120 left line hook
130 take-up lever
140 suture
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications.
The present application provides a sewing machine of the type of a flat bed sewing machine in which a sealed thread take-up mechanism is provided, and a main shaft rotatably mounted in a sewing machine housing 20 and driven to rotate by a main motor. For convenience of description, in the following examples, the directions are defined as follows: defining the axial direction of a main shaft in the sewing machine as a left-right direction, wherein the direction of the main shaft facing the head of the sewing machine is a left direction, the direction of the main shaft facing the tail of the sewing machine is a right direction, and the main shaft axially extends along the left-right direction; defining the moving direction of the sewing material when the sewing machine is used for sewing as a front direction; a direction orthogonal to both the left-right direction and the front-rear direction is defined as an up-down direction.
As shown in fig. 3 and 4, the sealed thread take-up mechanism according to the present invention includes a driving source 10, a thread take-up transmission unit installed inside a sewing machine housing 20, a thread take-up member 30, and a plurality of thread passing members all installed outside the sewing machine housing 20, the thread take-up member 30 is provided with a thread passing portion 31 through which a thread 140 passes, the driving source 10 is connected to the thread take-up member 30 through the thread take-up transmission unit, the thread take-up member 30 is driven to reciprocate about a rotation central axis extending forward and backward in a plane parallel to a main axis in the sewing machine, the rotation central axis of the thread take-up member 30 is perpendicular to the main axis in the sewing machine, and the thread take-up member 30 is rotatably installed in the sewing machine housing 20 and is located at a rear side of the sewing machine housing 20 together with the plurality of thread passing members.
When the sewing machine sews, the thread 140 passes through the thread take-up 30 and the thread passing parts and then penetrates into the needle hole of the needle in the sewing machine, and the thread take-up function is realized through the reciprocating swing motion of the thread take-up 30 in the sewing process. Particularly, the movement mode of the thread take-up 30 in the present application is reciprocating swing, that is, the thread take-up 30 is rotatably installed on the sewing machine housing 20, so that it is not necessary to provide a long groove 21 in the sewing machine housing 20 to communicate the inside and the outside, so that the sewing machine housing 20 is in a sealed state at the thread take-up position, and the inside and the outside of the sewing machine housing 20 at the thread take-up position are isolated and not communicated, thereby effectively preventing the lubricating oil inside the housing 20 from splashing out and preventing external sundries from entering the inside of the housing 20, further preventing the pollution caused by the lubricating oil splashing to the outside of the sewing machine housing 20 and the internal transmission parts from being locked caused by the external sundries entering the inside of the housing 20, and finally improving the performance of the sewing machine.
Further, the thread take-up member 30 may have various structures, and the thread take-up transmission unit for driving the thread take-up member 30 to reciprocate may also have various structures, so that the sealed thread take-up mechanism has various embodiments. Two preferred embodiments of the sealed thread take-up mechanism are provided below.
Embodiment one of the sealing type thread take-up mechanism
As shown in fig. 3 and 4, and fig. 7 and 8, the plurality of thread passing components include a first thread holder 70, a thread take-up plate 80, a right thread hook 90, a second thread holder 110, and a left thread hook 120, and the thread 140 passes through the thread passing hole of the first thread holder 70 and the thread passing plate 80, the thread passing groove of the second thread holder 110 and the right thread hook 90, the thread passing part 31 of the thread take-up 30, and the thread passing groove of the left thread hook 120 in sequence.
Further, as shown in fig. 4 to 6, the thread take-up 30 has a rotary shaft 32 extending in the front-rear axial direction along the rotary central axis, a connecting part 33 provided at the rear end of the rotary shaft 32 and located outside the sewing machine case 20, and a thread take-up part 34 connected to the connecting part 33 and located outside the sewing machine case 20, the rotary shaft 32 is rotatably supported in the sewing machine case 20 through a first bushing 40, so that the thread take-up 30 is directly rotatably mounted to the sewing machine case 20, a thread take-up transmission unit is connected to the rotary shaft 32 of the thread take-up 30, and the thread passing part 31 is a hook provided on the outer edge side of the thread take-up part 34.
Further, as shown in fig. 4 and 5, the thread take-up transmission unit includes a driving shaft 51 extending in the front-rear axial direction along the rotation central axis, a driving crank 52 fixed to the rear end of the driving shaft 51, a connecting link 53, and a connecting crank 54 fixed to the rotating shaft portion 32 of the thread take-up member 30, the driving shaft 51, the driving crank 52, the connecting link 53, and the connecting crank 54 are all disposed inside the sewing machine housing 20, the output end of the driving source 10 is connected to the front end of the driving shaft 51 to rotate the driving shaft 51, both ends of the connecting link 53 are respectively hinged to the driving crank 52 and the connecting crank 54 through a pin extending in the front-rear direction, and both front and rear ends of the driving shaft 51 are rotatably supported in the sewing machine housing 20 through a second bushing 60. When the driving source 10 outputs, the driving shaft 51 is driven to rotate, the driving crank 52 rotates along with the driving shaft 51, the connecting crank 54 is driven to swing through the connecting rod 53, the rotating shaft part 32 of the wire picking member 30 is driven to rotate, and therefore the wire picking member 30 is driven to rotate. The rotation shaft 32 of the thread take-up 30 serves as a swing fulcrum of the thread take-up 30, and the rotation center axis is also a center axis of the rotation shaft 32.
Preferably, the outer diameter of the connecting portion 33 is larger than the outer diameter of the first sleeve 40, so that the connecting portion 33 can cover the rear end of the first sleeve 40, and the sealing performance is improved. As shown in fig. 6, the thread take-up portion 34 is fan-shaped, a plurality of rotatable rollers 35 are further disposed on the periphery of the thread take-up portion 34, the thread hooks and the rollers 35 are sequentially arranged along the circumferential direction of the thread take-up portion 34, the rollers 35 are disposed on the same side of the thread hooks, the rollers 35 can contact with the thread 140, and the surfaces of the rollers 35 are smooth.
The driving source 10 is a motor and is fixedly installed on the front end surface of the sewing machine casing 20; the motor shaft of the motor is fixedly connected with the front end of the driving shaft 51, and the motor directly drives the driving shaft 51 to rotate. In addition, the motor is connected with an electric control module in the sewing machine, the electric control module can control the output rotation angle of the motor, further the swing amplitude of the thread picking piece 30 can be controlled, namely the rotation angle of the thread picking piece 30 is controlled, so that the thread picking piece 30 has a plurality of different rotation angles, the rotation angles of the thread picking piece 30 are different, and the corresponding thread picking amounts are different, therefore, the thread supply amount of the sealed thread picking mechanism can be adjusted according to different types of sewing materials, and the sewing adaptability is improved. The corner of the thread take-up member 30 means: the thread take-up member 30 swings from an initial position when the thread take-up amount is minimum to a limit position when the thread take-up amount is maximum, and the thread take-up member 30 swings back and forth between the initial position and the limit position in the sewing process of the sewing machine, so that the thread take-up member 30 can be located at different limit positions by controlling the output of the motor, and the thread supply amount is adjusted.
Specifically, as the thread take-up 30 is reciprocally swung, the length of the thread 140 between the right hook 90, the thread take-up 30 and the left hook 120 is changed. When the thread take-up 30 is at the initial position, as shown in FIG. 8, the swing angle of the thread take-up 30 is minimized and the length of the thread 140 is minimized and is designated as LMINThen L isMIN＝(LAC+LBC)MIN. When the thread take-up 30 is at the extreme position, as shown in FIG. 7, the swing angle of the thread take-up 30 is the largest and the length of the thread 140 is the largest, designated as LMAXThen L isMAX＝(LAC+LBC)MAX+2LCD，LCDFor the effective arc length of the thread take-up portion 34 of the thread take-up member 30,
the thread supply L of the sealed thread take-up mechanism is expressed as follows: l ═ LMAX-LMINTherefore, the thread supply L of the sealed take-up mechanism is controlled by
And the size of R. As shown in fig. 9 and 10, R is a winding radius formed by the thread hook of the thread take-up 30 and the roller 35, and is determined by the structural size of the thread take-up 30. However, it is possible to use a single-layer,
the effective winding angle formed by the thread hook of the thread take-up 30 and the roller 35 is the angle between the roller 35 of the plurality of rollers 35 that is farthest from the thread hook among the plurality of rollers 35 that contact the thread 140 when the thread take-up 30 is in the extreme position and the thread hook. As shown in FIG. 9, the larger the rotation angle of the thread take-up 30, the more effective the winding angle
The larger the size; as shown in FIG. 10, the smaller the rotation angle of the thread take-up 30, the effective winding angle
The smaller. Therefore, the output of the motor can be adjusted to adjust the pickThe size of the corner of the wire 30, thereby adjusting the effective winding angle
And further adjusting the thread supply L of the sealed thread take-up mechanism.
Second embodiment of the sealed thread take-up mechanism
The second sealed thread take-up mechanism embodiment is different from the first sealed thread take-up mechanism embodiment in that: the thread take-up member 30 has a structure different from that of the thread take-up transmission unit. In the second embodiment of the sealed thread take-up mechanism, as shown in fig. 11 and 12, the thread take-up 30 has a connecting portion 33 located outside the sewing machine housing 20 and a thread take-up portion 34 connected to the connecting portion 33 and located outside the sewing machine housing 20, the connecting portion 33 is connected to the thread take-up transmission unit, and the thread passing portion 31 is a thread passing hole opened on the outer edge side of the thread take-up portion 34. The thread take-up transmission unit includes a driving shaft 51 extending in the front-rear axial direction along the rotation central axis, the output end of the driving source 10 is connected to the front end of the driving shaft 51 to drive the driving shaft 51 to rotate, both the front and rear ends of the driving shaft 51 are rotatably supported in the sewing machine housing 20 through a second bushing 60, the connecting portion 33 of the thread take-up member 30 is directly fixed to the rear end of the driving shaft 51, and the thread take-up member 30 is rotatably mounted to the sewing machine housing 20 through the driving shaft 51. When the driving source 10 outputs, the driving shaft 51 is driven to rotate, the driving shaft 51 directly drives the connecting part 33 of the thread take-up member 30 to rotate, and the thread take-up part 34 of the thread take-up member 30 is driven to swing around the driving shaft 51 in a reciprocating mode. The drive shaft 51 serves as a pivot point of the thread take-up 30, and the above-described rotation center axis is also a center axis of the drive shaft 51.
Further, the driving source 10 is a motor, and is fixedly installed on the front end surface of the sewing machine housing 20; the motor shaft of the motor is fixedly connected with the front end of the driving shaft 51, and the motor directly drives the driving shaft 51 to rotate. The swing range of the thread take-up member 30, that is, the rotation angle of the thread take-up member 30 can be controlled by controlling the output of the motor, thereby adjusting the thread supply amount of the sealed thread take-up mechanism.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A sealed take-up mechanism is characterized in that: including driving source (10), install at the inside transmission unit of picking up thread of sewing machine casing (20), pick up line spare (30) and a plurality of and all install the line part of crossing in sewing machine casing (20) outside, it is equipped with line portion of crossing (31) that holds suture (140) and pass through on line spare (30) to pick up, driving source (10) are picked up line spare (30) through the transmission unit of picking up thread and are linked to each other, drive and are walked line spare (30) around the reciprocal swing of the central axis of rotation of main shaft in the perpendicular to sewing machine, it rotationally installs in sewing machine casing (20) to pick up line spare (30) and lie in same one side of sewing machine casing (20) with a plurality of line parts of crossing.
2. The sealed thread take-up mechanism of claim 1, wherein: the thread take-up part (30) is provided with a rotating shaft part (32) extending along the axial direction of the rotating central axis, a connecting part (33) arranged at the end part of the rotating shaft part (32) and positioned outside the sewing machine shell (20) and a thread take-up part (34) connected with the connecting part (33) and positioned outside the sewing machine shell (20), the rotating shaft part (32) is rotatably supported in the sewing machine shell (20) through a first shaft sleeve (40) and is connected with the thread take-up transmission unit, and the thread take-up part (31) is a thread hook arranged on the outer edge side of the thread take-up part (34).
3. The sealed thread take-up mechanism of claim 2, wherein: the thread take-up portion (34) is fan-shaped, the periphery of the thread take-up portion (34) is provided with a plurality of rotatable rollers (35), the thread hook and the rollers (35) are sequentially arranged along the circumferential direction of the thread take-up portion (34), and the rollers (35) can be in contact with the thread (140).
4. The sealed thread take-up mechanism of claim 2, wherein: the outer diameter of the connecting portion (33) is larger than the outer diameter of the first sleeve (40).
5. The sealed thread take-up mechanism of claim 2, wherein: the thread take-up transmission unit comprises a driving shaft (51) which axially extends along the rotating central axis and is driven to rotate by a driving source (10), a driving crank (52) fixed on the driving shaft (51), a connecting rod (53) and a connecting crank (54) fixed on a rotating shaft part (32) of the thread take-up piece (30), wherein two ends of the connecting rod (53) are respectively hinged with the driving crank (52) and the connecting crank (54), and two ends of the driving shaft (51) are rotatably supported in the sewing machine shell (20) through a second shaft sleeve (60).
6. The sealed thread take-up mechanism of claim 1, wherein: the thread take-up piece (30) is provided with a connecting part (33) positioned outside the sewing machine shell (20) and a thread take-up part (34) connected with the connecting part (33) and positioned outside the sewing machine shell (20), the connecting part (33) is connected with the thread take-up transmission unit, and the thread take-up part (31) is a thread take-up hole formed in the outer edge side of the thread take-up part (34).
7. The sealed thread take-up mechanism of claim 6, wherein: the thread take-up transmission unit comprises a driving shaft (51) which extends axially along the rotating central axis and is driven to rotate by a driving source (10), two ends of the driving shaft (51) are rotatably supported in the sewing machine shell (20) through a second shaft sleeve (60), and the connecting part (33) of the thread take-up piece (30) is fixed at the end part of the driving shaft (51).
8. The sealed thread take-up mechanism as claimed in claim 1, 5 or 7, wherein: the driving source (10) is a motor.
9. The sealed thread take-up mechanism of claim 1, wherein: the plurality of thread passing components comprise a first thread clamping device (70), a thread picking plate (80), a right thread hook (90), a second thread clamping device (110) and a left thread hook (120), and the thread (140) sequentially passes through the thread passing hole in the first thread clamping device (70), the thread picking plate (80), the thread passing groove in the second thread clamping device (110), the right thread hook (90), the thread passing part (31) in the thread picking part (30) and the thread passing groove in the left thread hook (120).
10. A sewing machine characterized by: the sewing machine is provided with a sealed thread take-up mechanism as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010442170.0A CN113699706B (en) | 2020-05-22 | 2020-05-22 | Sealed take-up mechanism and sewing machine |
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| CN202010442170.0A CN113699706B (en) | 2020-05-22 | 2020-05-22 | Sealed take-up mechanism and sewing machine |
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| CN113699706B CN113699706B (en) | 2022-09-27 |
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| CN105926192A (en) * | 2016-05-19 | 2016-09-07 | 杰克缝纫机股份有限公司 | Oil-proof type wire bonding cam structure |
| CN208980901U (en) * | 2018-10-25 | 2019-06-14 | 杰克缝纫机股份有限公司 | A kind of thread ran of sewing machine anti-oil leakage mechanism |
| CN109402885A (en) * | 2018-11-28 | 2019-03-01 | 杰克缝纫机股份有限公司 | The Yarn taking-up mechanism and sewing machine of use in sewing machine |
| CN109457409A (en) * | 2018-11-28 | 2019-03-12 | 杰克缝纫机股份有限公司 | The Yarn taking-up mechanism and sewing machine of use in sewing machine |
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Address after: 318010 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Applicant after: Jack Technology Co.,Ltd. Address before: 318010 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Applicant before: JACK SEWING MACHINE Co.,Ltd. |
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