CN205775202U - A kind of thread cutting mechanism of sewing machine - Google Patents

A kind of thread cutting mechanism of sewing machine Download PDF

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Publication number
CN205775202U
CN205775202U CN201620618527.5U CN201620618527U CN205775202U CN 205775202 U CN205775202 U CN 205775202U CN 201620618527 U CN201620618527 U CN 201620618527U CN 205775202 U CN205775202 U CN 205775202U
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China
Prior art keywords
take
thread
electric magnet
sewing machine
plate
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CN201620618527.5U
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Chinese (zh)
Inventor
潘小强
张辽
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Xian Typical Industry Co Ltd
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Xian Typical Industry Co Ltd
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Priority to CN201620618527.5U priority Critical patent/CN205775202U/en
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Abstract

This utility model belongs to industrial sewing technical field, is specifically related to 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.The technical solution of the utility model includes sewing machine body, 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.This utility model simple in construction, cost are relatively low, install, debug, easy to maintenance, there is the advantage that trimming moment is little, trimming noise is little, thread trimming stability is high, trimming the end of a thread is shorter.

Description

A kind of thread cutting mechanism of sewing machine
Technical field
This utility model belongs to industrial sewing technical field, is 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 there is structure complexity, cost relatively High, install, debug, the problem such as maintenance difficult.
Utility model content
This utility model for solving that existing thread cutting mechanism structure is complicated, relatively costly, install, debug, maintenance difficult etc. asks Topic, 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 as received basis The raising of amount.
For solving the problem that prior art exists, the technical solution of the utility model is: a kind of thread cutting mechanism of sewing machine, bag Include sewing machine body, it is characterised in that: the left push pedal of described sewing machine body is arranged with automatic shearing assembly, and sewing machine is originally Body base plate is arranged with trimming electric magnet drive mechanism and Yarn taking-up mechanism, and the slip cap in described 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 at electric magnet transmission In mechanism in the draw-in groove of drive block.
Described automatic shearing assembly includes that stationary knife, moving knife, moving knife seat, upper clamp clip, thread trimmer fix seat, lower clamping Sheet, 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 trimming Cutter is fixed seat and is passed sequentially through screw connection, and thread trimmer installing plate is fixed seat bottom external part by screw with thread trimmer and is connected, under Clamp clip is arranged at thread trimmer and fixes seat bottom portion, and described slip cap is arranged on power transmission shaft by jump ring, described regulation spring Sheet 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, company Pole socket, the two ends of described electric magnet are connected to installing plate after electric magnet front mounting plate and electric magnet, described connecting pin Being connected fixing through electric magnet by jump ring with fork, axial screw is connected fixing through fork with swing rod connecting plate, drive block Being sheathed on screw drive axle, one end of screw drive axle sequentially passes through one end of fork and spring, and the other end is arranged in lower company On bar, the other end of spring is connected with spring carrier arm plate, and pitman shaft sequentially passes through lower link, connecting rod base and upper connecting rod, pitman shaft Upper connecting rod and lower link are fixed by two ends respectively by bolt, and 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 chooses Line lower installation board, take-up upper mounting plate is connected fixing with thread take-up crank by jump ring, and one end of take-up kinematic link is bent with take-up The lower end of handle is bolted fixing, and one end riveting of the other end and take-up driving crank is fixing, take-up driving crank curved Pars convoluta position 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, and fork is even Fishplate bar is bolted under base plate, and limited block and spring carrier arm plate are bolted under base plate respectively, and spring is respectively Being connected with screw drive axle and spring carrier arm plate, 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, advantage of the present utility model is as follows:
This utility model simple in construction, cost are relatively low, install, debug, easy to maintenance;
This utility model 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 this utility model structural representation;
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 choose Line mechanism;
After 4 electric magnet, installing plate, 5 electric magnet, 6 connecting pins, 7 electric magnet front mounting plates, 8 forks are installed Plate, 9 forks, 10 axial screws, 11 screw drive axles, 12 drive blocks, 13 lower links, 14 pitman shafts, 15 Curved needle seat, 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 board;
26 stationary knifes, 27 moving knife, 28 moving knife seats, clamp clip, 30 thread trimmers fix seat, 31 times clampings on 29 Sheet, 32 power transmission shafts, 33 slip caps, 34 pressure regulation reeds, 35 thread trimmer installing plates.
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 the basic machine of GK0056 Type, the left push pedal 2 of described sewing machine body 1 is arranged with automatic shearing assembly A, and sewing machine body 1 base plate is arranged with to be cut Line electric magnet drive mechanism B and Yarn taking-up mechanism C, the described slip cap 33 in automatic shearing knife assembly A is arranged at electric magnet and passes In the sliding tray of the upper connecting rod 17 in motivation structure B;Take-up driving crank 24 in Yarn taking-up mechanism C is arranged at electric magnet drive mechanism In 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, long logical Being provided with four bolts hole in the rectangular edges of groove both sides, 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 groove long with stationary knife 26 The long groove matched, 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 on end face It is provided with bolt hole, opposite side perpendicular end surface is provided with bolt hole;
Described trimming includes rectangle to fixing seat, rectangle be provided centrally with long groove, the both sides rectangular edges of long groove On be provided with four bolts hole, four bolts hole are corresponding with the bolt hole of stationary knife, and 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, and installation sheet is provided with two Bolt hole, the bottom of described regulation pornographic movie is provided with the crotch of " L " shape, and another angle, left side arranges downward vertically and is provided with spiral shell Keyhole is corresponding with the perpendicular end surface on the right side of shears installing plate.
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 even Connecing fixing, thread trimmer installing plate 35 is fixed seat 30 bottom external part by screw with thread trimmer and is connected, and lower clamp clip 31 passes through spiral shell Bolt, nut are connected and fixed on thread trimmer and fix bottom seat 30, and moving knife 27 and power transmission shaft 32 are bolted and are fixed on stationary knife 26 And between moving knife seat 28, described slip cap 33 is arranged on power transmission shaft 32 by jump ring, described regulation reed 34 and trimming Cutter is fixed seat 30 side jag and is bolted,.
Described thread trimmer fixed plate 35 is connected with base plate 3 by bolt.
Described electric magnet drive mechanism B include 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 installed after being connected to electric magnet front mounting plate 7 and electric magnet Plate 4, described connecting pin 6 is connected fixing through electric magnet 5 with fork 9 by jump ring, and axial screw 10 is through fork 9 and fork Connecting plate 8 connects fixing, and drive block 12 is sheathed on screw drive axle 11, and one end of screw drive axle 11 sequentially passes through fork 9 With one end of spring 19, the other end is arranged on lower link 13, and the other end of spring 19 is connected with spring carrier arm plate 20, pitman shaft 14 sequentially pass through lower link 13, connecting rod base 16 and upper connecting rod 17, pitman shaft 14 two ends respectively by bolt by upper connecting rod 17 and under Connecting rod 13 is fixed, and 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, pendulum Bar connecting plate 8 is bolted on base plate 3 times, and limited block 18 and spring carrier arm plate 20 are bolted on base plate 3 respectively Under, 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 transmission 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, and take-up transmission is even One end of bar 23 is bolted fixing with the lower end of thread take-up crank 22, and the other end rivets with one end of take-up driving crank 24 Fixing, 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.
Work process of the present utility model: when sewing finishing, eedle is in highest order, and looper is in Far Left, eedle Line is around forming wire loop on looper, and bottom line oblique pull is bottom the needle plate of upper right side, and now system sends signal to electric magnet 5, makes It drives one end rearward movement of fork 9, and the other end of fork 9 travels forward, and fork 9 lead-screw power transmission shaft 11 is transported forward Dynamic, screw drive axle 11 promotes drive block 12 to travel forward and lower link 13 rotary motion, and drive block 12 promotes take-up transmission bent Handle 24 rotates, and take-up driving crank 24 rotates and pulled down by take-up kinematic link 23, so that thread take-up crank 22 moves upward, reaches To 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 will drive power transmission shaft 32 travel forward, and power transmission shaft 32 travels forward and travelled forward by drive moving knife 27, until catching on eedle line and bottom line;Work as electric magnet After 5 reach range, system provides signal, and electric magnet will reset under the pulling force effect of spring 19, and now moving knife 27 catches on Line will be cut off under the effect of stationary knife 26 by eedle line and bottom line Rapid reset, looper thread and bottom line, and at upper clamp clip 29 Effect under the bottom line cut off is clipped between moving knife 27 and upper clamp clip 29, whole automatic shearing athletic performance completes.
This utility model 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.
This utility model thread trimmer mechanism is not operated in whole sewing process, will not cause sewing thread trace any Impact, therefore sewing thread trace is more graceful, and complete machine sewing and automatic shearing performance are the most stable.
This utility model thread trimmer mechanism, after completing trimming function, trimming the end of a thread is shorter, it is to avoid trimming the end of a thread is long to be made The waste become and the operation of subsequent artefacts's trimming thread ends.
This utility model compares with existing thread cutting mechanism, owing to mechanism is few, so the power of electromagnet needed is little, compares province Electricity, 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 characterised in that: a left side for described sewing machine body (1) Push pedal (2) is arranged with automatic shearing assembly (A), and sewing machine body (1) base plate is arranged with trimming electric magnet drive mechanism (B) With Yarn taking-up mechanism (C), the described slip cap (33) in automatic shearing knife assembly (A) is arranged in electric magnet drive mechanism (B) Upper connecting rod (17) sliding tray in;Take-up driving crank (24) in Yarn taking-up mechanism (C) is arranged at electric magnet drive mechanism (B) In the draw-in groove of middle drive block (12).
A kind of thread cutting mechanism of sewing machine the most according to claim 1, it is characterised in that: described automatic shearing assembly (A) Including 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), 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, and thread trimmer installing plate (35) leads to Crossing screw to fix seat (30) bottom external part with thread trimmer and be connected, lower clamp clip (31) is arranged at thread trimmer and fixes seat (30) end Portion, described slip cap (33) is arranged on power transmission shaft (32) by jump ring, and described regulation reed (34) is fixed with thread trimmer Seat (30) side jag is bolted.
A kind of thread cutting mechanism of sewing machine the most according to claim 1, it is characterised in that: described electric magnet drive mechanism (B) electric magnet (5), connecting pin (6), axial screw (10), drive block (12), spring (19), pitman shaft (14), connecting rod base are included (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 by jump ring through electric magnet (5) and fork (9), axial screw (10) passes fork (9) and puts Bar connecting plate (8) connects fixing, and drive block (12) is sheathed on screw drive axle (11), and one end of screw drive axle (11) is successively Through fork (9) and one end of spring (19), the other end is arranged on lower link (13), and the other end of spring (19) is hung with spring Hook plate (20) connects, and pitman shaft (14) sequentially passes through lower link (13), connecting rod base (16) and upper connecting rod (17), pitman shaft (14) two Upper connecting rod (17) and lower link (13) are fixed by end respectively by bolt, and connecting rod base (16) is bolted on curved needle seat (15) On.
A kind of thread cutting mechanism of sewing machine the most according to claim 1, it is characterised 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) and thread take-up crank (22) are connected fixing by jump ring, one end of take-up kinematic link (23) with The lower end of thread take-up crank (22) is bolted fixing, and the other end is fixing with one end riveting of take-up driving crank (24), chooses The crooked position of line 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) It is connected with base plate (3) by bolt.
A kind of thread cutting mechanism of sewing machine the most according to claim 3, it is characterised in that: installing plate (4) and electricity after electric magnet Magnet front mounting plate (7) passes through bolt respectively by electric magnet (5)
Being fixed under base plate (3), swing rod connecting plate (8) is bolted under base plate (3), limited block (18) and spring carrier arm Plate (20) is bolted under base plate (3) respectively, spring (19) respectively with screw drive axle (11) and spring carrier arm plate (20) connecting, limited block (18) is connected with base (3).
A kind of thread cutting mechanism of sewing machine the most according to claim 4, it is characterised in that: described take-up upper mounting plate (21) Fixed with base plate (3) by bolt with take-up lower installation board (25).
CN201620618527.5U 2016-06-22 2016-06-22 A kind of thread cutting mechanism of sewing machine Active CN205775202U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620618527.5U CN205775202U (en) 2016-06-22 2016-06-22 A kind of thread cutting mechanism of sewing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620618527.5U CN205775202U (en) 2016-06-22 2016-06-22 A kind of thread cutting mechanism of sewing machine

Publications (1)

Publication Number Publication Date
CN205775202U true CN205775202U (en) 2016-12-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620618527.5U Active CN205775202U (en) 2016-06-22 2016-06-22 A kind of thread cutting mechanism of sewing machine

Country Status (1)

Country Link
CN (1) CN205775202U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105951320A (en) * 2016-06-22 2016-09-21 西安标准工业股份有限公司 Thread cutting mechanism of sewing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105951320A (en) * 2016-06-22 2016-09-21 西安标准工业股份有限公司 Thread cutting mechanism of sewing machine
CN105951320B (en) * 2016-06-22 2019-04-16 西安标准工业股份有限公司 Thread cutting mechanism of sewing machine

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