CN108149392B - portable sewing machine - Google Patents
portable sewing machine Download PDFInfo
- Publication number
- CN108149392B CN108149392B CN201810205899.9A CN201810205899A CN108149392B CN 108149392 B CN108149392 B CN 108149392B CN 201810205899 A CN201810205899 A CN 201810205899A CN 108149392 B CN108149392 B CN 108149392B
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- CN
- China
- Prior art keywords
- feeding
- wire
- base plate
- locking
- rack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
- D05B1/08—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making multi-thread seams
- D05B1/12—Lock-stitch seams
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
- D05B27/06—Work-feeding means with feed dogs having horizontal and vertical movements arranged above and below the workpieces
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
- D05B55/14—Needle-bar drives
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
Abstract
The invention discloses a portable sewing machine, which comprises a sewing needle feeding device and a thread locking device matched and arranged below the sewing needle feeding device, wherein the sewing needle feeding device comprises a feeding substrate, a feeding rack girdle, a supporting gear, a driving bevel gear set, a worm, a feeding crankshaft, a sewing needle, a turbine, a connecting bracket, a tensioning gear and an upper pressing plate; the wire locking device comprises a wire locking base plate, a wire locking rack girdle, a supporting gear, a supporting bracket, a lower pressing plate, a wire locking crankshaft, a wire locking transmission shaft, a rotating disc and a wire winding disc. The sewing machine has the advantages of compact structure, small machine body, small occupied space, portability and convenient use, can be used at any time, can be used under the condition that the clothing worn by people is opened during working or suburb activities, does not need manual sewing, has high sewing efficiency and good effect, and ensures the attractive appearance of the clothing.
Description
Technical Field
The invention relates to clothing processing equipment, in particular to a portable sewing machine.
Background
A sewing machine is a machine that interweaves or sews one or more layers of stitching material by forming one or more stitches on the stitching material with one or more stitching threads. The sewing machine can sew cotton, hemp, silk, wool, artificial fiber and other fabrics, leather, plastic, paper and other products, and the sewn stitch is neat, beautiful, flat, firm, fast in sewing speed and simple and convenient to use. Sewing machines can be classified into domestic, industrial and service industrial machines according to the purpose.
At present, although the common household sewing machine is convenient to use, the household sewing machine is large in size, occupies large space and is inconvenient to carry. When people work or in suburb activities, the embarrassing situation of opening the thread of the clothes can not be avoided, but the existing household sewing machine can not be used at any time, and the efficiency is low, the sewing effect is different from person to person, and the attractive appearance of the clothes is affected.
Disclosure of Invention
Aiming at the defects existing in the prior art, the portable sewing machine provided by the invention has the advantages of compact structure, small machine body, small occupied space, portability and capability of being used at any time, and can be used under the condition that the clothing worn by people is opened during working or suburban activities, the manual sewing is not needed, the sewing efficiency is high, the effect is good, and the attractive appearance of the clothing is ensured.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the portable sewing machine comprises a sewing needle feeding device and a locking wire device matched with the lower part of the sewing needle feeding device, wherein the sewing needle feeding device comprises a square feeding base plate, two sides of the feeding base plate are respectively sleeved with a closed feeding rack girdle, two sides of the feeding rack girdle are respectively provided with teeth, two ends of the two feeding rack girdles are respectively provided with a supporting gear meshed with the inner sides of the two feeding rack girdle and arranged on the feeding base plate, one supporting gear is coaxially arranged with a pair of driving conical gear sets, the driving conical gear sets are connected with a worm arranged in the feeding base plate, the worm rotates along with the driving conical gear sets, the worm is meshed with a turbine, the turbine is penetrated by a feeding crankshaft, one end of the feeding crankshaft is hinged with a vertically arranged sewing needle, the sewing needle is connected with a sliding block, the slide block can transversely slide along the feeding base plate, the other end of the feeding crankshaft extends out of the feeding base plate and is hinged with a vertically arranged connecting rod, four connecting brackets are symmetrically arranged on two sides of the feeding base plate, each connecting bracket comprises a cylindrical rod penetrating through the feeding base plate, two ends of each cylindrical rod are respectively sleeved with a spring, one ends of each spring are connected with the feeding base plate, the other ends of each spring are respectively connected with an upper bracket and a lower bracket which are arranged at two ends of each cylindrical rod and are in an opening frame shape, a tensioning gear meshed with the lower part of the inner side of a feeding rack girdle is arranged in the lower bracket, a tensioning gear support frame which is slidably connected with the upper bracket is arranged in the upper bracket through the springs, a tensioning gear meshed with the upper part of the inner side of the feeding rack girdle is arranged in the tensioning gear support frame, the four upper brackets are connected to an upper pressing plate positioned above the two feeding rack annular belts; the wire locking device comprises a wire locking base plate connected with a feeding base plate through a plurality of fixed plates, the wire locking base plate is symmetrical with the feeding base plate, wire locking rack endless belts with teeth are sleeved outside two sides of the wire locking base plate, the upper parts of the two wire locking rack endless belts are meshed with the lower parts of the two feeding rack endless belts, the shapes and parameters of the two wire locking rack endless belts are identical with those of the two feeding rack endless belts, supporting gears meshed with the inner sides of the two wire locking rack endless belts are also arranged at two ends of the two wire locking rack endless belts, the four supporting brackets are symmetrically arranged on two sides of the wire locking base plate, the four supporting brackets are structurally identical with the four connecting brackets and are respectively arranged correspondingly, the upper supporting brackets of the four supporting brackets are meshed with the inner sides of the wire locking rack endless belts through tensioning gears, the lower supporting brackets of the four supporting brackets are connected onto a lower pressing plate positioned below the two wire locking rack endless belts, the wire locking device further comprises a wire locking plate hinged with the end part, the wire locking wire winding wire is arranged on the wire locking base plate in a rotating mode, and the wire winding plate is connected with a wire locking wire winding disc in a rotating mode, and the wire winding disc can be arranged on the wire locking base plate in a rotating mode, and the wire winding disc can rotate along with the rotating mode, and the wire winding disc can rotate, and the wire winding disc is matched with the winding disc can rotate.
As the preferable technical scheme, in order to guarantee that the connection between the sewing needle feeding device and the lockwire device is firm, be favorable to improving the sewing effect, avoid whole sewing machine weight to be too heavy simultaneously, influence and carry, the fixed plate sets up to two, and the symmetry is installed in one side of feeding base plate and lockwire base plate.
In order to prevent the sewing needle from damaging clothes during movement, the sewing effect is further ensured, and the strokes of the feeding gear ring belt and the locking wire rack ring belt, as well as the feeding crankshaft and the locking wire crankshaft, are the same in unit time.
Compared with the prior art, the invention has the beneficial effects that:
1. the sewing machine has the advantages of compact structure, small machine body, small occupied space, portability and convenient use, can be used at any time, can be used under the condition that the clothing worn by people is opened during working or suburb activities, does not need manual sewing, has high sewing efficiency and good effect, and ensures the attractive appearance of the clothing.
2. The quantity and the structure setting of fixed plate scientific and reasonable guarantees to be connected firmly between sewing needle feeding device and the locking wire device, is favorable to improving the sewing effect, avoids whole sewing machine weight too heavy simultaneously, portable.
3. The gear ring belt and the crank shaft are scientifically and reasonably arranged in a walking relationship, so that the sewing needle is prevented from damaging clothes in the motion process, and the sewing effect is further ensured.
Drawings
The invention is described in further detail below with reference to the drawings and the specific examples.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a partial block diagram of the present invention;
FIG. 3 is a schematic structural view of a connecting bracket;
FIG. 4 is a schematic view of the structure of a support bracket;
reference numerals: 1. 1-1 parts of sewing needle feeding device, 1-2 parts of feeding base plate, 1-3 parts of feeding rack endless belt, 1-4 parts of upper pressing plate, 1-4 parts of driving conical gear set, 1-5 parts of worm, 1-6 parts of feeding crank shaft, 1-7 parts of sewing needle, 1-8 parts of sliding block, 1-9 parts of turbine, 1-10 parts of connecting rod, 1-11 parts of connecting bracket, 1-11-1 parts of cylindrical rod, 1-11-2 parts of spring, 1-11-3 parts of upper bracket, 1-11-4 parts of lower bracket, 1-11-5 parts of tensioning gear supporting frame, 2 parts of locking device, 2-1 parts of locking wire base plate, 2-2 parts of locking wire rack endless belt, 2-3 parts of supporting bracket, 2-3-1 parts of upper supporting bracket, 2-3-2 parts of lower supporting bracket, 2-4 parts of lower pressing plate, 2-5 parts of locking wire crank shaft, 2-6 parts of locking wire transmission shaft, 2-7 parts of rotating disk, 2-8 parts of winding disk, 3 parts of fixing plate, 4 parts of tensioning gear.
Detailed Description
As shown in figure 1, a specific embodiment of the invention is provided, the portable sewing machine comprises a sewing needle feeding device 1 and a thread locking device 2 which is matched and arranged below the sewing needle feeding device 1, the sewing needle feeding device 1 comprises a square feeding base plate 1-1, two sides of the feeding base plate 1-1 are respectively sleeved with a closed feeding rack girdle 1-2, two sides of the feeding rack girdle 1-2 are respectively provided with teeth, two ends of the two feeding rack girdle 1-2 are respectively provided with a supporting gear which is meshed with the inner sides of the two feeding rack girdle and is arranged on the feeding base plate, one supporting gear is coaxially arranged with a pair of driving conical gear sets 1-4, the driving conical gear sets 1-4 are connected with a worm 1-5 which is arranged in the feeding base plate 1-1, the worm 1-5 rotates along with the driving of the conical gear set 1-4, the worm 1-5 is meshed with a turbine 1-9, the turbine 1-9 is penetrated by a feeding crankshaft 1-6, one end of the feeding crankshaft 1-6 is hinged with a vertically arranged sewing needle 1-7, the sewing needle 1-7 is connected with a sliding block 1-8, the sliding block 1-8 can transversely slide along the feeding base plate 1-1, the other end of the feeding crankshaft 1-6 extends out of the feeding base plate 1-1 and is hinged with a vertically arranged connecting rod 1-10, four connecting brackets 1-11 are symmetrically arranged on two sides of the feeding base plate 1-1, the connecting brackets 1-11 comprise cylindrical rods 1-11-1 penetrating through the feeding base plate 1-1, the two ends of the cylindrical rod 1-11-1 are respectively sleeved with a spring 1-11-2, one ends of the two springs 1-11-2 are connected with the feeding base plate 1-1, the other ends of the two springs 1-11-2 are respectively connected with an upper bracket 1-11-3 and a lower bracket 1-11-4 which are arranged at the two ends of the cylindrical rod 1-11-1 and are in an opening frame shape, as shown in figure 3, the lower bracket 1-11-4 is internally provided with a tensioning gear 4 meshed with the lower part of the inner side of the feeding rack girdle 1-2, the supporting gear and the tensioning gear 4 are mainly used for ensuring the tightening of the feeding rack girdle 1-2, the upper bracket 1-11-3 is internally provided with a tensioning gear support frame 1-11-5 which is slidably connected with the upper bracket 1-11-2 through the springs 1-11-2, the tensioning gear support frame 1-11-5 is internally provided with a tensioning gear 5 meshed with the upper part of the inner side of the feeding rack girdle 1-2, and the four upper brackets 1-11-3 are respectively connected with a girdle 1-3 on a pressing plate 1-3 positioned above the two pressing plates; the wire locking device 2 comprises a wire locking base plate 2-1 connected with a feeding base plate 1-1 through a plurality of fixing plates 3, the wire locking base plate 2-1 and the feeding base plate 1-1 are symmetrically arranged, wire locking rack endless belts 2-2 with teeth on two sides are sleeved outside the two sides of the wire locking base plate 2-1, the upper parts of the two wire locking rack endless belts 2-2 are meshed with the lower parts of the two feeding rack endless belts 1-2, the shapes and parameters of the two wire locking rack endless belts 2-2 and the two feeding rack endless belts 1-2 are the same, supporting gears meshed with the inner sides of the two wire locking rack endless belts 2-2 and arranged on the wire locking base plate 2-1 are also arranged at the two ends of the two wire locking rack endless belts 2-2, the wire locking base plate 2-1 is symmetrically provided with four supporting brackets 2-3, the four support brackets 2-3 are the same as the four connecting brackets 1-11 in structure and are respectively and correspondingly arranged, as shown in fig. 4, except that the upper and lower brackets are oppositely arranged, the upper support brackets 2-3-1 of the four support brackets 2-3 are respectively meshed with the upper inner side of the locking wire rack endless belt 2-2 through tensioning gears 5, the lower support brackets 2-3-2 of the four support brackets 2-3 are respectively meshed with the lower inner side of the locking wire rack endless belt 2-2 through tensioning gears 5, the embodiment is provided with the connecting mode of the four support brackets 2-3 and the locking wire rack endless belt 2-2 as the connecting mode of the connecting brackets 1-11 and the feeding rack endless belt 1-2, namely, the upper and lower ends of the support brackets 2-3 are respectively provided with springs, the lower support bracket 2-3-2 is internally provided with a tensioning gear support frame which is slidably connected with the lower support bracket through a spring, the end parts of the lower support brackets 2-3-2 of the four support brackets 2-3 are connected to a lower pressing plate 2-4 which is positioned below two locking wire rack endless belts 2-2, the locking wire device 2 further comprises a locking wire crank 2-5 which is hinged with the end parts of connecting rods 1-10 and extends into a locking wire base plate 2-1, the end parts of the locking wire crank 2-5 are connected with a locking wire transmission shaft 2-6, the locking wire transmission shaft 2-6 is meshed with a hollow rotating disc 2-7, a transmission rotating disc meshed with the rotating disc 2-7 is arranged at one end of the locking wire transmission shaft 2-6, the rotating disc 2-7 rotates along with the locking wire transmission shaft 2-6, the rotating disc 2-7 is arranged on the locking wire base plate 2-1 and can synchronously rotate along with the locking wire transmission shaft 2-6, the rotating disc 2-7 is sleeved with a disc 2-8, the rotating disc 2-8 is coaxially arranged with the rotating disc 2-7, and the rotating disc 2-7 is matched with a notch 2-8 in a sewing machine as shown in the figure.
The fixed plates 3 are arranged at two sides and symmetrically arranged on one sides of the feeding substrate 1-1 and the sewing substrate 2-1, the quantity of the fixed plates 3 is too large, although the stable connection between the sewing needle feeding device 1 and the sewing device 2 is ensured, the weight of the whole sewing machine is increased, and the sewing machine is inconvenient to carry, so that the two fixed plates 3 are arranged, on one hand, the stable connection between the sewing needle feeding device 1 and the sewing device 2 is ensured, the sewing effect is improved, and meanwhile, the weight of the whole sewing machine is prevented from being too heavy, and the sewing machine is convenient to carry and use.
The feeding gear ring belt 1-2 and the locking wire rack ring belt 2-2 have the same stroke with the feeding crankshaft 1-6 and the locking wire crankshaft 2-5 in unit time, so that the sewing needle is effectively prevented from damaging clothes in the moving process, and the sewing effect is further ensured.
The invention is used when: putting the clothing to be sewn between the two groups of feeding rack endless belts 1-2 and the locking wire rack endless belts 2-2, after the wire spool 2-8 winds the wire, pulling out the wire end from the notch of the rotating disk 2-8 to be matched with the sewing needle 1-7, and fastening the clothing between the feeding rack endless belts 1-2 and the locking wire rack endless belts 2-2 by simultaneously pressing the upper pressing plate 1-3 and the lower pressing plate 2-4; and the dragging device is used for synchronously moving the feeding rack endless belt 1-2, the locking wire rack endless belt 2-2 and the clothes, driving the tensioning gear 4 to run, further driving the sewing needle 1-7 and the wire spool 2-8 to rotate, realizing sewing and repairing of the clothes, and being simple and efficient in operation.
Of course, the above description of the preferred embodiments of the present invention is provided only with reference to the accompanying drawings, and is not intended to limit the scope of the invention, but rather to cover all equivalent modifications in terms of the principle, structure and structure of the invention.
Claims (3)
1. Portable sewing machine, its characterized in that: the sewing needle feeding device (1) comprises a sewing needle feeding device (1) and a locking wire device (2) matched with the sewing needle feeding device (1), wherein the sewing needle feeding device (1) comprises a square feeding base plate (1-1), two sides of the feeding base plate (1-1) are respectively sleeved with a closed feeding rack girdle (1-2), teeth are respectively arranged on two sides of the feeding rack girdle (1-2), two ends of the two feeding rack girdles (1-2) are respectively provided with a supporting gear meshed with the inner sides of the two feeding rack girdles and arranged on the feeding base plate (1-1), one supporting gear is coaxially arranged with a pair of driving conical gear sets (1-4), the driving conical gear sets (1-4) are connected with a worm (1-5) arranged in the feeding base plate, the worm (1-5) is meshed with a turbine (1-9), the turbine (1-9) is penetrated by a feeding crankshaft (1-6), one end of the feeding crankshaft is hinged with a vertically arranged sewing needle (1-7), a sliding block (1-7) is connected with the sewing needle (1-7), and the sliding block (1-1) can extend out of the feeding base plate (1-1) along the other end of the feeding crankshaft (1-1) The feeding device is hinged with a connecting rod (1-10) which is vertically arranged, four connecting brackets (1-11) are symmetrically arranged on two sides of a feeding base plate (1-1), each connecting bracket (1-11) comprises a cylindrical rod (1-11-1) which penetrates through the feeding base plate (1-1), springs (1-11-2) are respectively sleeved at two ends of each cylindrical rod (1-11-1), one ends of each two springs (1-11-2) are connected with the feeding base plate (1-1), the other ends of each two springs (1-11-2) are respectively connected with an upper bracket (1-11-3) and a lower bracket (1-11-4) which are arranged at two ends of the cylindrical rod (1-11-1) and are in an opening frame shape, a tensioning gear (4) which is meshed with the lower part of the inner side of a feeding rack girdle (1-2) is arranged in the lower bracket (1-11-4), a tensioning gear support (1-11-5) which is slidably connected with the upper bracket (1-11-2) is arranged in the upper bracket (1-11-3) through the springs, the tensioning gear support (1-11-5) is meshed with the tensioning gear (1-5) on the inner side of the feeding rack girdle (1-5), the four upper brackets (1-11-3) are connected to an upper pressing plate (1-3) positioned above the two feeding rack endless belts (1-2); the wire locking device (2) comprises a wire locking base plate (2-1) connected with a feeding base plate (1-1) through a plurality of fixing plates (3), the wire locking base plate (2-1) is symmetrical with the feeding base plate (1-1), wire locking rack annular bands (2-2) with teeth are respectively sleeved outside two sides of the wire locking base plate (2-1), the upper parts of the two wire locking rack annular bands (2-2) are meshed with the lower parts of the two feeding rack annular bands (1-1), supporting gears which are meshed with the inner sides of the two wire locking rack annular bands (2-2) and are arranged on the wire locking base plate (2-1) are also arranged at two ends of the wire locking base plate (2-2), four supporting brackets (2-3) are symmetrically arranged on two sides of the wire locking base plate (2-1) and are identical with four connecting bracket structures (1-11) and are respectively and correspondingly arranged, the upper supporting brackets (2-3-1) of the four supporting brackets are respectively meshed with the inner sides of the wire locking rack annular bands (2-2) through tensioning gears (4) and the upper supporting brackets (2-3) of the inner sides of the wire locking rack annular bands (2-2) are meshed with the lower supporting racks (2-3) through the tensioning gears (4), the ends of the lower support brackets (2-3-2) of the four support brackets (2-3) are connected to a lower pressing plate (2-4) below the two locking wire rack endless belts (2-2), springs are arranged at the upper end and the lower end of the support brackets (2-3), tensioning gear supporting frames which are slidably connected with the lower support brackets are arranged in the lower support brackets (2-3-2) through the springs, the ends of the lower support brackets (2-3-2) of the four support brackets (2-3) are connected to a lower pressing plate (2-4) below the two locking wire rack endless belts (2-2), the locking wire device (2) further comprises a locking wire crank shaft (2-5) hinged with the ends of the connecting rods (1-10) and extending into the locking wire base plate (2-1), the end of the locking wire crank shaft (2-5) is connected with a locking wire transmission shaft (2-6), the locking wire transmission shaft (2-6) is matched and connected with a hollow rotating disc (2-7), and the locking wire crank shaft (2-7) can be arranged on the locking wire base plate (2-1) and the rotating disc (2-7) synchronously.
2. The portable sewing machine of claim 1, wherein: the number of the fixing plates (3) is two, and the fixing plates are symmetrically arranged on one side of the feeding base plate (1-1) and one side of the locking wire base plate (2-1).
3. The portable sewing machine of claim 1 or 2, wherein: the feeding gear endless belt (1-2) and the locking wire rack endless belt (2-2) have the same stroke with the feeding crankshaft (1-6) and the locking wire crankshaft (2-5) in unit time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205899.9A CN108149392B (en) | 2018-03-13 | 2018-03-13 | portable sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205899.9A CN108149392B (en) | 2018-03-13 | 2018-03-13 | portable sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108149392A CN108149392A (en) | 2018-06-12 |
| CN108149392B true CN108149392B (en) | 2023-10-20 |
Family
ID=62456234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810205899.9A Active CN108149392B (en) | 2018-03-13 | 2018-03-13 | portable sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108149392B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB837806A (en) * | 1955-07-15 | 1960-06-15 | Union Special Machine Co | Improvements in and relating to sewing machines, especially lockstitch sewing machines |
| CN1040069A (en) * | 1988-08-02 | 1990-02-28 | 彼特·依万诺卫奇·懊克洛夫 | Sewing machines |
| CN1134476A (en) * | 1994-12-06 | 1996-10-30 | 东海工业缝纫机株式会社 | Chain stitch sewing machine |
| CN204151540U (en) * | 2014-09-23 | 2015-02-11 | 苏州澳拓美盛自动化设备有限公司 | The axial automatic feed mechanism of Sewing machines XY |
| CN207002998U (en) * | 2017-05-12 | 2018-02-13 | 陈雪莲 | A kind of sewing machine provided with double pipe line |
-
2018
- 2018-03-13 CN CN201810205899.9A patent/CN108149392B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB837806A (en) * | 1955-07-15 | 1960-06-15 | Union Special Machine Co | Improvements in and relating to sewing machines, especially lockstitch sewing machines |
| CN1040069A (en) * | 1988-08-02 | 1990-02-28 | 彼特·依万诺卫奇·懊克洛夫 | Sewing machines |
| CN1134476A (en) * | 1994-12-06 | 1996-10-30 | 东海工业缝纫机株式会社 | Chain stitch sewing machine |
| CN204151540U (en) * | 2014-09-23 | 2015-02-11 | 苏州澳拓美盛自动化设备有限公司 | The axial automatic feed mechanism of Sewing machines XY |
| CN207002998U (en) * | 2017-05-12 | 2018-02-13 | 陈雪莲 | A kind of sewing machine provided with double pipe line |
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| Publication number | Publication date |
|---|---|
| CN108149392A (en) | 2018-06-12 |
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