CN105951320A - Thread cutting mechanism of sewing machine - Google Patents
Thread cutting mechanism of sewing machine Download PDFInfo
- Publication number
- CN105951320A CN105951320A CN201610453979.7A CN201610453979A CN105951320A CN 105951320 A CN105951320 A CN 105951320A CN 201610453979 A CN201610453979 A CN 201610453979A CN 105951320 A CN105951320 A CN 105951320A
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- CN
- China
- Prior art keywords
- take
- thread
- sewing machine
- electric magnet
- plate
- 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
- D05B65/00—Devices for severing the needle or lower thread
- D05B65/02—Devices for severing the needle or lower thread controlled by the sewing mechanisms
Abstract
The invention belongs to the technical field of industrial sewing and particularly relates to a thread cutting mechanism of a sewing machine, having greatly improved stability and ensuring improved working efficiency and quality. A technical scheme of the invention includes a sewing machine body, an automatic thread cutting assembly is disposed below a left push plate of the sewing machine body, a cutting electromagnet transmission mechanism and a thread picking mechanism are disposed below a bottom plate of the sewing machine body, and a sliding sleeve in the automatic thread cutting assembly is disposed in a slide slot of an upper link in an electromagnet transmission mechanism; a picking transmission crank in the thread picking mechanism is disposed in a locking slot of a transmission block in the electromagnet transmission mechanism. The thread cutting mechanism is simple in structure, low in cost and simple to mount, debug and maintain and has the advantages of small cutting torque, low cutting noise, high cutting stability and small cut end length.
Description
Technical field
The invention belongs to industrial sewing technical field, be specifically related to a kind of thread cutting mechanism of sewing machine.
Background technology
In existing market sewing device, chain seam machine thread cutting mechanism is varied, but generally have that structure is complicated, relatively costly, install, debug, the problem such as maintenance difficult.
Summary of the invention
The present invention solves that existing thread cutting mechanism structure is complicated, relatively costly, install, debug, the problem such as maintenance difficult, it is provided that a kind of thread cutting mechanism of sewing machine, it is greatly improved the stability of thread cutting mechanism, it is ensured that work efficiency and the raising of work quality.
For solving the problem that prior art exists, the technical scheme is that a kind of thread cutting mechanism of sewing machine, including sewing machine body, it is characterized in that: the left push pedal of described sewing machine body is arranged with automatic shearing assembly, sewing machine body base plate is arranged with trimming electric magnet drive mechanism and Yarn taking-up mechanism, and the described slip cap in automatic shearing knife assembly is arranged in the sliding tray of the upper connecting rod in electric magnet drive mechanism；Take-up driving crank in Yarn taking-up mechanism is arranged in electric magnet drive mechanism in the draw-in groove of drive block.
Described automatic shearing assembly includes stationary knife, moving knife, moving knife seat, upper clamp clip, thread trimmer fixes seat, lower clamp clip, power transmission shaft, slip cap, pressure regulation reed and thread trimmer installing plate, described stationary knife, moving knife, moving knife seat, upper clamp clip and thread trimmer are fixed seat and are passed sequentially through screw connection, thread trimmer installing plate is fixed seat bottom external part by screw with thread trimmer and is connected, lower clamp clip is arranged at thread trimmer and fixes seat bottom portion, described slip cap is arranged on power transmission shaft by jump ring, described regulation reed and thread trimmer are fixed seat side jag and are bolted.
Described electric magnet drive mechanism includes electric magnet, connecting pin, axial screw, drive block, spring, pitman shaft, connecting rod base, the two ends of described electric magnet are connected to installing plate after electric magnet front mounting plate and electric magnet, described connecting pin is connected fixing through electric magnet with fork by jump ring, axial screw is connected fixing through fork with swing rod connecting plate, drive block is sheathed on screw drive axle, one end of screw drive axle sequentially passes through one end of fork and spring, the other end is arranged on lower link, the other end of spring is connected with spring carrier arm plate, pitman shaft sequentially passes through lower link, connecting rod base and upper connecting rod, upper connecting rod and lower link are fixed by pitman shaft two ends respectively by bolt, connecting rod base is bolted on curved needle seat.
Described Yarn taking-up mechanism includes take-up upper mounting plate, thread take-up crank, take-up kinematic link, take-up driving crank and take-up lower installation board, take-up upper mounting plate is connected fixing with thread take-up crank by jump ring, one end of take-up kinematic link is bolted fixing with the lower end of thread take-up crank, the other end is fixing with one end riveting of take-up driving crank, and the crooked position of take-up driving crank is bolted on take-up lower installation board left end.
Described thread trimmer fixed plate is connected with base plate by bolt.
After electric magnet, electric magnet is fixed under base plate by installing plate and electric magnet front mounting plate respectively by bolt, swing rod connecting plate is bolted under base plate, limited block and spring carrier arm plate are bolted under base plate respectively, spring is connected with screw drive axle and spring carrier arm plate respectively, and limited block is connected with base.
Described take-up upper mounting plate and take-up lower installation board are fixed with base plate by bolt.
Compared with prior art, advantages of the present invention is as follows:
Present configuration is simple, cost is relatively low, install, debug, easy to maintenance；
The present invention has the advantage that trimming moment is little, trimming noise is little, thread trimming stability is high, trimming the end of a thread is shorter.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is A portion enlarged drawing in Fig. 1；
Fig. 3 is B portion enlarged drawing in Fig. 1；
Fig. 4 is C portion enlarged drawing in Fig. 1；
Description of reference numerals is as follows:
1 sewing machine body, 2 left push pedals, 3 bases, A thread trimmer assembly, B electric magnet drive mechanism, C Yarn taking-up mechanism；
Installing plate, 5 electric magnet, 6 connecting pins, 7 electric magnet front mounting plates, 8 fork installing plates, 9 forks, 10 axial screws, 11 screw drive axles, 12 drive blocks, 13 lower links after 4 electric magnet, 14 pitman shafts, 15 curved needle seats, 16 connecting rod bases, connecting rod, 18 limited blocks, 19 springs, 20 spring carrier arm plates on 17；
21 take-up upper mounting plates, 22 thread take-up cranks, 23 take-up kinematic links, 24 take-up driving cranks, 25 take-up lower installation boards；
26 stationary knifes, 27 moving knife, 28 moving knife seats, clamp clip, 30 thread trimmers fix seat, 31 times clamp clips, 32 power transmission shafts, 33 slip caps, 34 pressure regulation reeds, 35 thread trimmer installing plates on 29.
Detailed description of the invention
Below in conjunction with the accompanying drawings the design is described in detail:
See Fig. 1 Fig. 4: a kind of thread cutting mechanism of sewing machine, including sewing machine body 1, its model is GK0056 basic model, the left push pedal 2 of described sewing machine body 1 is arranged with automatic shearing assembly A, sewing machine body 1 base plate is arranged with trimming electric magnet drive mechanism B and Yarn taking-up mechanism C, and the described slip cap 33 in automatic shearing knife assembly A is arranged in the sliding tray of the upper connecting rod 17 in electric magnet drive mechanism B；Take-up driving crank 24 in Yarn taking-up mechanism C is arranged in electric magnet drive mechanism B in the draw-in groove of drive block 12.
Described automatic shearing assembly A includes that stationary knife 26, moving knife 27, moving knife seat 28, upper clamp clip 29, thread trimmer fix seat 30, lower clamp clip 31, power transmission shaft 32, slip cap 33, pressure regulation reed 34 and thread trimmer installing plate 35；
The concrete structure of described stationary knife 26 be one end be the rectangle of tip, the centre of rectangle is provided with long groove, and the rectangular edges of long groove both sides is provided with four bolts hole, and the bolt hole in the upper right corner is big compared with other three holes；
The structure of described upper clamp clip 29 is identical with the rectangular end of stationary knife, and the center, one end of rectangular end is stretched out；
Described moving knife seat 28 is rectangle, and the centre of rectangle is provided with elongated slot, and elongated slot is provided with the long groove that groove long with stationary knife 26 matches, and the two ends of long groove are provided with the bolt hole matched with stationary knife 26, and the bolt hole in the upper right corner is 2.
Described trimming to installing plate 35 cross section be shaped as " several " font, the left side of " several " font is stretched out and is provided with bolt hole on end face, opposite side perpendicular end surface is provided with bolt hole；
Described trimming includes rectangle to fixing seat, rectangle be provided centrally with long groove, four bolts hole it are provided with in the both sides rectangular edges of long groove, four bolts hole are corresponding with the bolt hole of stationary knife, the side of the bolt hole of upper right side also sets up porose, one jiao of the left side of described rectangle is provided with and regulates the installation sheet that pornographic movie 34 matches, two bolts hole it are provided with on installation sheet, the bottom of described regulation pornographic movie is provided with the crotch of " L " shape, and it is corresponding with the perpendicular end surface on the right side of shears installing plate that another angle, left side arranges and be provided with bolt hole downward vertically.
Described stationary knife 26, moving knife 27, moving knife seat 28, upper clamp clip 29 and thread trimmer is fixed seat 30 and is passed sequentially through screw and connect fixing, thread trimmer installing plate 35 is fixed seat 30 bottom external part by screw with thread trimmer and is connected, lower clamp clip 31 is connected and fixed on thread trimmer by bolt, nut and fixes bottom seat 30, moving knife 27 and power transmission shaft 32 are bolted and are fixed between stationary knife 26 and moving knife seat 28, described slip cap 33 is arranged on power transmission shaft 32 by jump ring, described regulation reed 34 and thread trimmer are fixed seat 30 side jag and are bolted.
Described thread trimmer fixed plate 35 is connected with base plate 3 by bolt.
nullDescribed electric magnet drive mechanism B includes electric magnet 5、Connecting pin 6、Axial screw 10、Drive block 12、Spring 19、Pitman shaft 14、Connecting rod base 16，The two ends of described electric magnet 5 are connected to installing plate 4 after electric magnet front mounting plate 7 and electric magnet，Described connecting pin 6 is connected fixing through electric magnet 5 with fork 9 by jump ring，Axial screw 10 is connected fixing through fork 9 with swing rod connecting plate 8，Drive block 12 is sheathed on screw drive axle 11，One end of screw drive axle 11 sequentially passes through fork 9 and one end of spring 19，The other end is arranged on lower link 13，The other end of spring 19 is connected with spring carrier arm plate 20，Pitman shaft 14 sequentially passes through lower link 13、Connecting rod base 16 and upper connecting rod 17，Upper connecting rod 17 and lower link 13 are fixed by pitman shaft 14 two ends respectively by bolt，Connecting rod base 16 is bolted on curved needle seat 15.
After electric magnet, electric magnet 5 is fixed on base plate 3 times by bolt by installing plate 4 and electric magnet front mounting plate 7 respectively, swing rod connecting plate 8 is bolted on base plate 3 times, limited block 18 and spring carrier arm plate 20 are bolted on base plate 3 times respectively, spring 19 is connected with screw drive axle 11 and spring carrier arm plate 20 respectively, and limited block 18 is connected with base 3.
Described Yarn taking-up mechanism C includes take-up upper mounting plate 21, thread take-up crank 22, take-up kinematic link 23, take-up driving crank 24 and take-up lower installation board 25, take-up upper mounting plate 21 is connected fixing with thread take-up crank 22 by jump ring, one end of take-up kinematic link 23 is bolted fixing with the lower end of thread take-up crank 22, the other end is fixing with one end riveting of take-up driving crank 24, and the crooked position of take-up driving crank 24 is bolted on take-up lower installation board 25 left end.
Described take-up upper mounting plate 21 and take-up lower installation board 25 are fixed with base plate 3 by bolt.
The work process of the present invention: when sewing finishing, eedle is in highest order, looper is in Far Left, the cincture on looper of eedle line forms wire loop, bottom line oblique pull is bottom the needle plate of upper right side, now system sends signal to electric magnet 5, it is made to drive one end rearward movement of fork 9, the other end of fork 9 travels forward, fork 9 lead-screw power transmission shaft 11 travels forward, screw drive axle 11 promotes drive block 12 to travel forward and lower link 13 rotary motion, drive block 12 promotes take-up driving crank 24 to rotate, take-up driving crank 24 rotates and is pulled down by take-up kinematic link 23, so that thread take-up crank 22 moves upward, reach take-up, the effect of loose ends；Connecting rod in drive 17 is rotated by lower link 13 rotary motion, and upper connecting rod 17 rotates and travelled forward by drive power transmission shaft 32, and power transmission shaft 32 travels forward and travelled forward by drive moving knife 27, until catching on eedle line and bottom line；After electric magnet 5 reaches range, system provides signal, electric magnet will reset under the pulling force effect of spring 19, now moving knife 27 catches on eedle line and bottom line Rapid reset, line will be cut off under the effect of stationary knife 26 by looper thread and bottom line, and being clipped between moving knife 27 and upper clamp clip 29 by the bottom line cut off under the effect of upper clamp clip 29, whole automatic shearing athletic performance completes.
The present invention uses electric magnet drive mechanism, Yarn taking-up mechanism, thread trimmer mechanism, relative to existing thread cutting mechanism install, debugging, easy to maintenance, cost reduce.
Thread trimmer mechanism of the present invention is not operated in whole sewing process, will not have any impact sewing thread trace, and therefore sewing thread trace is more graceful, and complete machine sewing and automatic shearing performance are the most stable.
Thread trimmer mechanism of the present invention, after completing trimming function, trimming the end of a thread is shorter, it is to avoid the long waste caused of trimming the end of a thread and the operation of subsequent artefacts's trimming thread ends.
The present invention compares with existing thread cutting mechanism, owing to mechanism is few, so the power of electromagnet needed is little, compares power saving, reaches energy-conservation effect；Mechanism is few simultaneously, and the overall noise of trimming, moment are less.
Claims (7)
1. a thread cutting mechanism of sewing machine, including sewing machine body (1), it is characterized in that: the left push pedal (2) of described sewing machine body (1) is arranged with automatic shearing assembly (A), sewing machine body (1) base plate is arranged with trimming electric magnet drive mechanism (B) and Yarn taking-up mechanism (C), and the described slip cap (33) in automatic shearing knife assembly (A) is arranged in the sliding tray of the upper connecting rod (17) in electric magnet drive mechanism (B)；Take-up driving crank (24) in Yarn taking-up mechanism (C) is arranged in electric magnet drive mechanism (B) in the draw-in groove of drive block (12).
nullThread cutting mechanism of sewing machine the most according to claim 1，It is characterized in that: described automatic shearing assembly (A) includes stationary knife (26)、Moving knife (27)、Moving knife seat (28)、Upper clamp clip (29)、Thread trimmer fixes seat (30)、Lower clamp clip (31)、Power transmission shaft (32)、Slip cap (33)、Pressure regulation reed (34) and thread trimmer installing plate (35)，Described stationary knife (26)、Moving knife (27)、Moving knife seat (28)、Upper clamp clip (29) and thread trimmer are fixed seat (30) and are passed sequentially through screw connection，Thread trimmer installing plate (35) is fixed seat (30) bottom external part by screw with thread trimmer and is connected，Lower clamp clip (31) is arranged at thread trimmer and fixes seat (30) bottom，Described slip cap (33) is arranged on power transmission shaft (32) by jump ring，Described regulation reed (34) and thread trimmer are fixed seat (30) side jag and are bolted.
nullThread cutting mechanism of sewing machine the most according to claim 1，It is characterized in that: described electric magnet drive mechanism (B) includes electric magnet (5)、Connecting pin (6)、Axial screw (10)、Drive block (12)、Spring (19)、Pitman shaft (14)、Connecting rod base (16)，The two ends of described electric magnet (5) are connected to installing plate (4) after electric magnet front mounting plate (7) and electric magnet，Described connecting pin (6) is connected fixing through electric magnet (5) with fork (9) by jump ring，Axial screw (10) is connected fixing through fork (9) with swing rod connecting plate (8)，Drive block (12) is sheathed on screw drive axle (11)，One end of screw drive axle (11) sequentially passes through fork (9) and one end of spring (19)，The other end is arranged on lower link (13)，The other end of spring (19) is connected with spring carrier arm plate (20)，Pitman shaft (14) sequentially passes through lower link (13)、Connecting rod base (16) and upper connecting rod (17)，Upper connecting rod (17) and lower link (13) are fixed by pitman shaft (14) two ends respectively by bolt，Connecting rod base (16) is bolted on curved needle seat (15).
Thread cutting mechanism of sewing machine the most according to claim 1, it is characterized in that: described Yarn taking-up mechanism (C) includes take-up upper mounting plate (21), thread take-up crank (22), take-up kinematic link (23), take-up driving crank (24) and take-up lower installation board (25), take-up upper mounting plate (21) is connected fixing with thread take-up crank (22) by jump ring, one end of take-up kinematic link (23) is bolted fixing with the lower end of thread take-up crank (22), the other end is fixing with one end riveting of take-up driving crank (24), the crooked position of take-up driving crank (24) is bolted on take-up lower installation board (25) left end.
A kind of thread cutting mechanism of sewing machine the most according to claim 2, it is characterised in that: described thread trimmer fixed plate (35) is connected with base plate (3) by bolt.
Thread cutting mechanism of sewing machine the most according to claim 3, it is characterised in that: after electric magnet, electric magnet (5) is fixed on base plate (3) by bolt by installing plate (4) and electric magnet front mounting plate (7) respectively
Under, swing rod connecting plate (8) is bolted under base plate (3), limited block (18) and spring carrier arm plate (20) are bolted under base plate (3) respectively, spring (19) is connected with screw drive axle (11) and spring carrier arm plate (20) respectively, and limited block (18) is connected with base (3).
Thread cutting mechanism of sewing machine the most according to claim 4, it is characterised in that: described take-up upper mounting plate (21) and take-up lower installation board (25) are fixed with base plate (3) by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610453979.7A CN105951320B (en) | 2016-06-22 | 2016-06-22 | Thread cutting mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610453979.7A CN105951320B (en) | 2016-06-22 | 2016-06-22 | Thread cutting mechanism of sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN105951320A true CN105951320A (en) | 2016-09-21 |
| CN105951320B CN105951320B (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610453979.7A Active CN105951320B (en) | 2016-06-22 | 2016-06-22 | Thread cutting mechanism of sewing machine |
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| Country | Link |
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| CN (1) | CN105951320B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193390A (en) * | 2018-03-21 | 2018-06-22 | 杰克缝纫机股份有限公司 | Trimming drive component, thread cutting mechanism and sewing machine |
| CN108385293A (en) * | 2018-03-21 | 2018-08-10 | 杰克缝纫机股份有限公司 | Trimming drive component, thread cutting mechanism and sewing machine |
| CN108425190A (en) * | 2018-04-04 | 2018-08-21 | 林小玲 | A kind of cutting facility of zigzag sewing machine |
| WO2022104854A1 (en) * | 2020-11-21 | 2022-05-27 | 吴江市震宇缝制设备有限公司 | Thread trimming mechanism of sewing machine for production of protective clothing |
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| CN2317238Y (en) * | 1996-05-14 | 1999-05-05 | 重机公司 | Thread-severing device for sewing machine |
| CN201648735U (en) * | 2009-12-29 | 2010-11-24 | 钱谷兰 | Thread-taking-up mechanism of embroidery machine |
| TW201114969A (en) * | 2009-10-27 | 2011-05-01 | Fei-Long Gu | Sewing machine and method for shortening residual thread end of sewing workpiece |
| CN202705688U (en) * | 2012-06-19 | 2013-01-30 | 新杰克缝纫机股份有限公司 | Sewing machine automatic trimming device |
| CN104233656A (en) * | 2014-09-17 | 2014-12-24 | 深圳市远成缝纫机工业有限公司 | Sewing machine and automatic thread trimming device thereof |
| CN205775202U (en) * | 2016-06-22 | 2016-12-07 | 西安标准工业股份有限公司 | A kind of thread cutting mechanism of sewing machine |
-
2016
- 2016-06-22 CN CN201610453979.7A patent/CN105951320B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317238Y (en) * | 1996-05-14 | 1999-05-05 | 重机公司 | Thread-severing device for sewing machine |
| TW201114969A (en) * | 2009-10-27 | 2011-05-01 | Fei-Long Gu | Sewing machine and method for shortening residual thread end of sewing workpiece |
| CN201648735U (en) * | 2009-12-29 | 2010-11-24 | 钱谷兰 | Thread-taking-up mechanism of embroidery machine |
| CN202705688U (en) * | 2012-06-19 | 2013-01-30 | 新杰克缝纫机股份有限公司 | Sewing machine automatic trimming device |
| CN104233656A (en) * | 2014-09-17 | 2014-12-24 | 深圳市远成缝纫机工业有限公司 | Sewing machine and automatic thread trimming device thereof |
| CN205775202U (en) * | 2016-06-22 | 2016-12-07 | 西安标准工业股份有限公司 | A kind of thread cutting mechanism of sewing machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193390A (en) * | 2018-03-21 | 2018-06-22 | 杰克缝纫机股份有限公司 | Trimming drive component, thread cutting mechanism and sewing machine |
| CN108385293A (en) * | 2018-03-21 | 2018-08-10 | 杰克缝纫机股份有限公司 | Trimming drive component, thread cutting mechanism and sewing machine |
| CN108425190A (en) * | 2018-04-04 | 2018-08-21 | 林小玲 | A kind of cutting facility of zigzag sewing machine |
| WO2022104854A1 (en) * | 2020-11-21 | 2022-05-27 | 吴江市震宇缝制设备有限公司 | Thread trimming mechanism of sewing machine for production of protective clothing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105951320B (en) | 2019-04-16 |
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