CN105951320B - Thread cutting mechanism of sewing machine - Google Patents
Thread cutting mechanism of sewing machine Download PDFInfo
- Publication number
- CN105951320B CN105951320B CN201610453979.7A CN201610453979A CN105951320B CN 105951320 B CN105951320 B CN 105951320B CN 201610453979 A CN201610453979 A CN 201610453979A CN 105951320 B CN105951320 B CN 105951320B
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- take
- electromagnet
- thread
- mounting plate
- plate
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- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention belongs to industrial sewing technical fields, and in particular to a kind of thread cutting mechanism of sewing machine.Its stability for greatly improving thread cutting mechanism, it is ensured that the raising of working efficiency and work quality.Technical solution of the present invention includes sewing machine body, the left push plate of the sewing machine body is arranged with automatic shearing component, sewing machine body bottom plate is arranged with trimming electromagnet transmission mechanism and Yarn taking-up mechanism, and the sliding sleeve in the automatic shearing knife assembly is set in the sliding groove of the upper connecting rod in electromagnet transmission mechanism；Take-up driving crank in Yarn taking-up mechanism is set in electromagnet transmission mechanism in the card slot of drive block.The configuration of the present invention is simple, cost is relatively low, installation, debugs, is easy to maintenance, has the advantages that trimming torque is small, trimming noise is small, thread trimming stability is high, trimming the end of a thread is shorter.
Description
Technical field
The invention belongs to industrial sewing technical fields, and in particular to a kind of thread cutting mechanism of sewing machine.
Background technique
In existing market sewing device, chain stitch machine thread cutting mechanism it is varied, but it is generally existing structure is complicated, cost compared with
The problems such as high, installation, debugging, maintenance difficult.
Summary of the invention
The present invention is the problems such as solving existing thread cutting mechanism structure is complicated, higher cost, installation, debugging, maintenance difficult, to mention
For a kind of thread cutting mechanism of sewing machine, the stability of thread cutting mechanism is greatly improved, it is ensured that working efficiency and work quality
It improves.
In order to solve the problems existing in the prior art, the technical scheme is that a kind of thread cutting mechanism of sewing machine, including seam
It threads machine ontology, it is characterised in that: the left push plate of the sewing machine body is arranged with automatic shearing component, sewing machine body bottom
Plate is arranged with electromagnet transmission mechanism and Yarn taking-up mechanism, and the sliding sleeve in the automatic shearing component is set to electromagnet biography
In the sliding groove of upper connecting rod in motivation structure；Take-up driving crank in Yarn taking-up mechanism, which is set in electromagnet transmission mechanism, to be driven
In the card slot of block.
The automatic shearing component includes stationary knife, moving knife, moving knife seat, upper clamp clip, thread trimmer fixing seat, lower clamping
Piece, transmission shaft, sliding sleeve, pressure regulation reed and thread trimmer mounting plate, the stationary knife, moving knife, moving knife seat, upper clamp clip and trimming
Knife fixing seat passes sequentially through screw connection, and thread trimmer mounting plate is connect by screw with thread trimmer fixing seat lower part extension end, under
Clamp clip is set to thread trimmer fixing seat bottom, and the sliding sleeve is mounted on transmission shaft by circlip, the adjusting spring
Piece is bolted with thread trimmer fixing seat side jag.
The electromagnet transmission mechanism include mounting plate after electromagnet, electromagnet, connecting pin, electromagnet front mounting plate,
Swing rod connecting plate, swing rod, axial screw, screw drive axis, drive block, lower link, pitman shaft, be fixed on curved needle seat, connecting rod base,
After the both ends of upper connecting rod, spring and spring carrier arm plate, the electromagnet are connected separately with electromagnet front mounting plate and electromagnet
Mounting plate, the connecting pin passes through electromagnet and swing rod is connected and fixed by circlip, and axial screw passes through swing rod and swing rod connects
Fishplate bar is connected and fixed, and drive block is sheathed on screw drive axis, and one end of screw drive axis sequentially passes through the one of swing rod and spring
End, the other end are arranged on lower link, and the other end of spring is connect with spring carrier arm plate, and pitman shaft sequentially passes through lower link, connects
Pole socket and upper connecting rod, pitman shaft both ends pass through bolt respectively and fix upper connecting rod and lower link, and connecting rod base is bolted on
On curved needle seat.
The 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 and thread take-up crank are connected and fixed by circlip, and one end of take-up kinematic link and take-up are bent
The lower end of handle is bolted fixation, and one end of the other end and take-up driving crank, which rivets, to be fixed, take-up driving crank it is curved
Pars convoluta position is bolted on take-up lower installation board left end.
The thread trimmer fixed plate is connect by bolt with bottom plate.
Mounting plate and electromagnet front mounting plate pass through bolt respectively and electromagnet are fixed under bottom plate after electromagnet, and swing rod connects
Fishplate bar is bolted under bottom plate, and limited block and spring carrier arm plate are bolted under bottom plate respectively, spring difference
It is connect with screw drive axis and spring carrier arm plate, bottom plate is connect with limited block.
The take-up upper mounting plate and take-up lower installation board is fixed by bolt and bottom plate.
Compared with prior art, advantages of the present invention is as follows:
The configuration of the present invention is simple, cost is relatively low, installation, debugs, is easy to maintenance；
The present invention has the advantages that trimming torque is small, trimming noise is small, thread trimming stability is high, trimming the end of a thread is shorter.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is trimming electromagnet transmission mechanism B enlarged drawing；
Fig. 3 is Yarn taking-up mechanism C enlarged drawing；
Fig. 4 is automatic shearing component enlarged drawing；
The reference numerals are as follows:
1-sewing machine body, 2-left push plates, 3-pedestals, A-trimming knife assembly, B-electromagnet transmission mechanism, C-choose
Line mechanism；
Mounting plate, 5-electromagnet, 6-connecting pins, 7-electromagnet front mounting plates, the installation of 8-swing rods after 4-electromagnet
Plate, 9-swing rods, 10-axial screws, 11-screw drive axis, 12-drive blocks, 13-lower links, 14-pitman shafts, 15-
Curved needle seat, 16-connecting rod bases, 17-upper connecting rods, 18-limited blocks, 19-springs, 20-spring carrier arm plates；
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, 29-upper clamp clips, 30-thread trimmer fixing seats, 31-lower clampings
Piece, 32-transmission shafts, 33-sliding sleeves, 34-pressure regulation reeds, 35-thread trimmer mounting plates.
Specific embodiment
The design is described in detail with reference to the accompanying drawing:
Referring to Fig. 1-Fig. 4: a kind of thread cutting mechanism of sewing machine, including sewing machine body 1, the basic machine of model GK0056
Type, the left push plate 2 of the sewing machine body 1 are arranged with automatic shearing component A, and 1 bottom plate of sewing machine body is arranged with electricity
Sliding sleeve 33 in magnet transmission mechanism B and Yarn taking-up mechanism C, the automatic shearing component A is set to electromagnet transmission mechanism B
In upper connecting rod 17 sliding groove in；Take-up driving crank 24 in Yarn taking-up mechanism C is set in electromagnet transmission mechanism B and is driven
In the card slot of block 12.
The automatic shearing component A includes stationary knife 26, moving knife 27, moving knife seat 28, upper clamp clip 29, thread trimmer fixing seat
30, lower clamp clip 31, transmission shaft 32, sliding sleeve 33, pressure regulation reed 34 and thread trimmer mounting plate 35；
The specific structure of the stationary knife 26 is the rectangle that one end is tip, and the centre of rectangle is provided with long through slot, long logical
There are four bolt hole, the bolt hole in the upper right corner is big compared with other three holes for setting in the rectangular edges of slot two sides；
The structure of the upper clamp clip 29 is identical as the rectangular end of stationary knife, and one end center of rectangular end is stretched out；
The moving knife seat 28 is rectangle, and the centre of rectangle is provided with elongated slot, is provided on elongated slot and the long through slot of stationary knife 26
The long through slot to match, the both ends of long through slot are provided with the bolt hole to match with stationary knife 26, and the bolt hole in the upper right corner is 2.
The shape of the trimming to the cross section of mounting plate 35 is " several " font, and the left side of " several " font is stretched out on end face
It is provided with bolt hole, is provided with bolt hole in the perpendicular end surface of the other side；
The trimming includes rectangle to fixing seat, and rectangle is provided centrally with long through slot, the two sides rectangular edges of long through slot
There are four bolts hole for upper setting, and four bolts hole are corresponding with the bolt hole of stationary knife, and the side of the bolt hole of upper right side is also set up
There is hole, one jiao of the left side of the rectangle is provided with the installation sheet to match with adjusting pornographic movie 34, on installation sheet there are two settings
The bottom of bolt hole, the adjusting pornographic movie is provided with the crotch of L shape, and another angle in left side is arranged downward vertically and is provided with spiral shell
Keyhole is corresponding with the perpendicular end surface on the right side of shear knife mounting plate.
Stationary knife 26, moving knife 27, moving knife seat 28, upper clamp clip 29 and the thread trimmer fixing seat 30 passes sequentially through screw company
Fixation is connect, thread trimmer mounting plate 35 is connect by screw with 30 lower part extension end of thread trimmer fixing seat, and lower clamp clip 31 passes through spiral shell
Bolt, nut are connected and fixed on 30 bottom of thread trimmer fixing seat, and moving knife 27 and transmission shaft 32, which are bolted, is fixed on stationary knife 26
Between moving knife seat 28, the sliding sleeve 33 is mounted on transmission shaft 32 by circlip, the adjusting reed 34 and trimming
30 side jag of knife fixing seat is bolted,.
The thread trimmer fixed plate 35 is connect by bolt with bottom plate 3.
The electromagnet transmission mechanism (B) includes mounting plate (4), electromagnet (5), connecting pin (6), electromagnetism after electromagnet
Iron front mounting plate (7), swing rod connecting plate (8), swing rod (9), axial screw (10), screw drive axis (11), drive block (12), under
Connecting rod (13), pitman shaft (14) are fixed on curved needle seat (15), connecting rod base (16), upper connecting rod (17), spring (19) and spring carrier arm
Plate (20), the electromagnet 5 both ends be connected separately with mounting plate 4 after electromagnet front mounting plate 7 and electromagnet, the company
Outbound 6 passes through electromagnet 5 and is connected and fixed with swing rod 9 by circlip, and axial screw 10 passes through swing rod 9 and connect with swing rod connecting plate 8
Fixed, drive block 12 is sheathed on screw drive axis 11, and one end of screw drive axis 11 sequentially passes through the one of swing rod 9 and spring 19
End, the other end are arranged on lower link 13, and the other end of spring 19 is connect with spring carrier arm plate 20, and pitman shaft 14 sequentially passes through down
Connecting rod 13, connecting rod base 16 and upper connecting rod 17,14 both ends of pitman shaft pass through bolt respectively and fix upper connecting rod 17 and lower link 13, even
Pole socket 16 is bolted on curved needle seat 15.
Electromagnet 5 is fixed under bottom plate 3 by bolt by mounting plate 4 and electromagnet front mounting plate 7 respectively after electromagnet, is put
Bar connecting plate 8 is bolted under bottom plate 3, and limited block 18 and spring carrier arm plate 20 are bolted on bottom plate 3 respectively
Under, spring 19 is connect with screw drive axis 11 and spring carrier arm plate 20 respectively, and bottom plate 3 is connect with limited block 18.
The 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 are connected and fixed with thread take-up crank 22 by circlip, and take-up transmission connects
Fixation, one end riveting of the other end and take-up driving crank 24 is bolted in one end of bar 23 and the lower end of thread take-up crank 22
Fixed, the crooked position of take-up driving crank 24 is bolted on 25 left end of take-up lower installation board.
The take-up upper mounting plate 21 and take-up lower installation board 25 is fixed by bolt and bottom plate 3.
The course of work of the invention: when sewing finishing, eedle is in highest order, and looper is in Far Left, and eedle line exists
Around wire loop is formed on looper, baseline oblique pull is to upper right side needle plate bottom, and system sends signal to electromagnet 5 at this time, makes its band
One end of movable pendulum bar 9 moves backward, and the other end of swing rod 9 travels forward, and 9 lead-screw transmission shaft 11 of swing rod travels forward, spiral shell
Bar transmission shaft 11 pushes drive block 12 to travel forward and 13 rotary motion of lower link, and drive block 12 pushes take-up driving crank 24 to revolve
Turn, the rotation of take-up driving crank 24 pulls down take-up kinematic link 23, so that thread take-up crank 22 be made to move upwards, reaches and chooses
The effect of line, loose ends；13 rotary motion of lower link by drive upper connecting rod 17 rotate, upper connecting rod 17 rotation will drive transmission shaft 32 to
Preceding movement, transmission shaft 32, which travels forward, will drive moving knife 27 to travel forward, until catching on eedle line and baseline；When electromagnet 5 reaches
To after range, system provides signal, and electromagnet will reset under the pulling force effect of spring 19, and moving knife 27 catches on eedle at this time
Line and baseline Rapid reset, looper thread and baseline will cut line under the action of stationary knife 26, and in the work of upper clamp clip 29
The baseline of cutting is clipped between moving knife 27 and upper clamp clip 29 with lower, entire automatic shearing athletic performance is completed.
The present invention uses electromagnet transmission mechanism, Yarn taking-up mechanism, trimming cutter mechanism, pacifies relative to existing thread cutting mechanism
Dress, debugging, easy to maintenance, cost reduction.
Trimming cutter mechanism of the present invention, without work, will not cause any shadow in entire sewing process to sewing thread trace
It rings, therefore sewing thread trace is more graceful, complete machine sewing and automatic shearing performance are more stable.
Trimming cutter mechanism of the present invention, complete trimming function after, trimming the end of a thread is shorter, avoid trimming the end of a thread it is too long caused by
The process of waste and subsequent artefacts' trimming thread ends.
The present invention is compared with existing thread cutting mechanism, since mechanism is few, so the power of electromagnet needed is small, compares power saving,
Reach energy-efficient effect；Mechanism is few simultaneously, and the noise of whole trimming, torque are smaller.
Claims (1)
1. a kind of thread cutting mechanism of sewing machine, including sewing machine body (1), it is characterised in that: a left side for the sewing machine body (1)
Push plate (2) is arranged with automatic shearing component (A), and sewing machine body (1) bottom plate is arranged with electromagnet transmission mechanism (B) and chooses
Line mechanism (C), the sliding sleeve (33) in the automatic shearing component (A) are set to the upper company in electromagnet transmission mechanism (B)
In the sliding groove of bar (17)；Take-up driving crank (24) in Yarn taking-up mechanism (C) is set to transmission in electromagnet transmission mechanism (B)
In the card slot of block (12)；
The automatic shearing component (A) includes stationary knife (26), moving knife (27), moving knife seat (28), upper clamp clip (29), thread trimmer
Fixing seat (30), lower clamp clip (31), transmission shaft (32), sliding sleeve (33), pressure regulation reed (34) and thread trimmer mounting plate (35),
Stationary knife (26), moving knife (27), moving knife seat (28), upper clamp clip (29) and the thread trimmer fixing seat (30) passes sequentially through screw
Connection, thread trimmer mounting plate (35) are connect by screw with thread trimmer fixing seat (30) lower part extension end, and lower clamp clip (31) sets
It is placed in thread trimmer fixing seat (30) bottom, the sliding sleeve (33) is mounted on transmission shaft (32) by circlip, the tune
Making leaf spring (34) is bolted with thread trimmer fixing seat (30) side jag；
The electromagnet transmission mechanism (B) includes after electromagnet before mounting plate (4), electromagnet (5), connecting pin (6), electromagnet
Mounting plate (7), swing rod connecting plate (8), swing rod (9), axial screw (10), screw drive axis (11), drive block (12), lower link
(13), pitman shaft (14), curved needle seat (15), connecting rod base (16), upper connecting rod (17), spring (19) and spring carrier arm plate (20), institute
The both ends for the electromagnet (5) stated are connected separately with mounting plate (4) after electromagnet front mounting plate (7) and electromagnet, the connection
Pin (6) passes through electromagnet (5) and is connected and fixed with swing rod (9) by circlip, and axial screw (10) passes through swing rod (9) and connect with swing rod
Plate (8) is connected and fixed, and drive block (12) is sheathed on screw drive axis (11), and one end of screw drive axis (11) sequentially passes through pendulum
One end of bar (9) and spring (19), the other end are arranged on lower link (13), the other end and spring carrier arm plate of spring (19)
(20) it connects, pitman shaft (14) sequentially passes through lower link (13), connecting rod base (16) and upper connecting rod (17), pitman shaft (14) both ends point
Not Tong Guo bolt upper connecting rod (17) and lower link (13) is fixed, connecting rod base (16) is bolted on curved needle seat (15)；
The 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) are connect with thread take-up crank (22) by circlip solid
Fixed, fixation is bolted in one end of take-up kinematic link (23) and the lower end of thread take-up crank (22), and the other end and take-up pass
The one end of dynamic crank (24), which rivets, to be fixed, and the crooked position of take-up driving crank (24) is bolted on take-up lower installation board
(25) left end；
The thread trimmer mounting plate (35) is connect by bolt with bottom plate (3)；
Electromagnet (5) is fixed on bottom plate (3) by bolt respectively by mounting plate (4) and electromagnet front mounting plate (7) after electromagnet
Under, swing rod connecting plate (8) is bolted under bottom plate (3), and limited block (18) leads to respectively with spring carrier arm plate (20)
It crosses bolt to be fixed under bottom plate (3), spring (19) is connect with screw drive axis (11) and spring carrier arm plate (20) respectively, bottom plate
(3) it is connect with limited block (18)；
The take-up upper mounting plate (21) and take-up lower installation board (25) is fixed by bolt and bottom plate (3).
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105951320A CN105951320A (en) | 2016-09-21 |
| CN105951320B true CN105951320B (en) | 2019-04-16 |
Family
ID=56906288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610453979.7A Active CN105951320B (en) | 2016-06-22 | 2016-06-22 | Thread cutting mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105951320B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108193390B (en) * | 2018-03-21 | 2020-09-04 | 杰克缝纫机股份有限公司 | Trimming drive assembly, trimming mechanism and sewing machine |
| CN108425190B (en) * | 2018-04-04 | 2024-05-14 | 安庆富菱机械科技有限公司 | Thread cutting device of zigzag sewing machine |
| CN112323274B (en) * | 2020-11-21 | 2021-07-09 | 吴江市震宇缝制设备有限公司 | Protective clothing production is with sewing machine thread trimming mechanism |
| CN114645384A (en) * | 2020-12-17 | 2022-06-21 | 琦星智能科技股份有限公司 | Manipulator sewing machine |
Citations (5)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201114969A (en) * | 2009-10-27 | 2011-05-01 | Fei-Long Gu | Sewing machine and method for shortening residual thread end of sewing workpiece |
-
2016
- 2016-06-22 CN CN201610453979.7A patent/CN105951320B/en active Active
Patent Citations (5)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105951320A (en) | 2016-09-21 |
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