CN104805605B - The thread cutting mechanism of flat seam machine - Google Patents
The thread cutting mechanism of flat seam machine Download PDFInfo
- Publication number
- CN104805605B CN104805605B CN201510239446.4A CN201510239446A CN104805605B CN 104805605 B CN104805605 B CN 104805605B CN 201510239446 A CN201510239446 A CN 201510239446A CN 104805605 B CN104805605 B CN 104805605B
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- CN
- China
- Prior art keywords
- knife
- presser feet
- fixed seat
- cutting edge
- handle
- 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
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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
Abstract
The invention belongs to sewing machine technique fields, refer in particular to a kind of thread cutting mechanism of flat seam machine, including presser feet fixed seat, are mounted on the lower part of the presser foot lifter guide rod of head of sewing machine；Anchoring is mounted in presser feet fixed seat and for clamping reaching the standard grade for sewing；Stationary knife is fixedly mounted on the front side of presser feet fixed seat, cutting edge I is provided on stationary knife；Moving knife, is rotatably installed in presser feet fixed seat, and cutting edge II is provided on front side of moving knife, and when moving knife deflects to certain position, the cutting edge II of moving knife is slid on the cutting edge I of stationary knife and trimming；Drive system is arranged in presser feet fixed seat, and stationary knife is driven to swing back and forth.The present invention can be suitble to the line of polymorphic type, will be changed to the mode that stationary knife and moving knife are cut by way of being cut elastic threads in the prior art, securely and reliably, practicability is good.
Description
Technical field
The invention belongs to sewing machine technique fields, refer in particular to a kind of thread cutting mechanism of flat seam machine.
Background technology
In the prior art, sewing machine also needs to lengthen when seam is played after the reaching the standard grade across sewing needle of sewing, with
Just it takes up offline；Cloth is caused to be susceptible to Bird's Nest phenomenon when seam is played, that is, sewing thread reaches the standard grade long and circumnutates one
It rises.
ZL 201320698972.3 discloses a kind of thread cutting mechanism of sewing machine, is clamped in trimming intermediate plate and trimming line hook
During sewing machine needle the end of a thread, feeding dental strip is moved lead on cloth and is moved toward presser feet insert orientation, reaches the standard grade simultaneously so as to streak blade
Cut-out；The design has the following disadvantages：1st, anchoring cannot be suitble to the line of polymorphic type, and reason is the thickness reached the standard grade and strong
Degree differs, during actual use, having some lines can smoothly cut, have some then cannot the defects of；So as to cause cutting
The degree that the tension of line line hook is reached the standard grade must be adjusted according to line style, and it is that commonly used person completely can not to finely tune the degrees of tensions
It realizes；If the tension intensity of raising trimming line hook the 2, simply, can also pull offline, the effect of sewing is caused to become
Difference.
Invention content
The object of the present invention is to provide the thread cutting mechanisms of flat seam machine a kind of simple in structure, safe and reliable.
The object of the present invention is achieved like this：
The thread cutting mechanism of flat seam machine, including
Presser feet fixed seat is mounted on the lower part of the presser foot lifter guide rod of head of sewing machine；
Anchoring is mounted in presser feet fixed seat and for clamping reaching the standard grade for sewing；
Stationary knife is fixedly mounted on the front side of presser feet fixed seat, cutting edge I is provided on stationary knife；
Moving knife, is rotatably installed in presser feet fixed seat, and cutting edge II is provided on front side of moving knife, and moving knife deflects to a positioning
When putting, the cutting edge II of moving knife is slid on the cutting edge I of stationary knife and trimming；
Drive system is arranged in presser feet fixed seat, and stationary knife is driven to swing back and forth.
The moving knife includes blade and handle of a knife, and handle of a knife is rotatably installed in presser feet fixed seat, and the forepart of handle of a knife is equipped with described
Blade, the rear portion of handle of a knife are connect with the drive system.
The forepart of the handle of a knife is provided with mounting groove, and the rear portion of blade is embedded in mounting groove；Blade in mounting groove
On be provided with bar hole, more than one clamping screw passes through the bar hole and blade and handle of a knife is fixed as one.
The drive system includes connector motor magnet, eccentric pendulum and positioning pin；The output shaft of connector motor magnet drives inclined
Heart swing rod rotates, and the positioning pin mounted on eccentric pendulum outer end is inserted into the bar hole of handle of a knife rear end.
The drive system is arranged on the rear side of presser feet fixed seat, and the moving knife is L-shaped.
The stationary knife is mounted vertically in the front side of presser feet fixed seat, and cutting edge I is the sword slot of V-type；The cutting edge II corresponds to
It is arranged to vertical.
The leading flank of the stationary knife is the cambered surface of evagination, and the center line of cambered surface is consistent with the centre of gyration line of moving knife.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that：
The present invention can be suitble to the line of polymorphic type, will be changed by way of being cut elastic threads in the prior art
For the mode that stationary knife and moving knife are cut, securely and reliably, practicability is good.
Description of the drawings
Fig. 1 is the schematic diagram that the present invention is mounted on sewing machine.
Fig. 2 is stationary knife and the schematic diagram of moving knife cooperation.
Fig. 3 is the schematic diagram of the present invention.
Fig. 4 is the exploded view of the present invention.
1- head of sewing machine；2- foot lifting mechanisms；3- sewing machine panels；4- connector motor magnets；5- handle of a knifes；6- blades；7-
Stationary knife；8- feeding teeth；9- sewing needles；10- presser feet fixed seats；11- sewing needle mounting posts；12- presser foot lifter guide rods；13- bias is put
Bar；14- connector motor magnet mounting bases；15- cutting edges II；16- presser feets；17- positioning pins；18- bar holes；19- cutting edges I；20- bar shapeds
Hole；21- mounting grooves；22- moving knife；23- anchorings.
Specific embodiment
With specific embodiment, the invention will be further described below in conjunction with the accompanying drawings：
The thread cutting mechanism of flat seam machine, including
Presser feet fixed seat 10 is mounted on the lower part of the presser foot lifter guide rod 12 of head of sewing machine；
Anchoring 23 (anchoring in the first document ZL 201320698972.3 of an another piece of applicant in detail
Thin open, this will not be detailed here, the rising synchronous with presser foot lifter guide rod 12 of anchoring 23 or decline), consolidate mounted on presser feet
In reservation and for clamping reaching the standard grade for sewing；
Stationary knife 7 is fixedly mounted on the front side of presser feet fixed seat 10, cutting edge I 19 is provided on stationary knife 7；
Moving knife 22, is rotatably installed in presser feet fixed seat 10, cutting edge II 15 is provided on front side of moving knife, moving knife deflects to
During certain position, the cutting edge II 15 of moving knife is slid on the cutting edge I 19 of stationary knife and trimming；
Drive system is arranged in presser feet fixed seat 10, and stationary knife 7 is driven to swing back and forth.In the design, presser foot lifter is led
Bar 12 is a part for foot lifting mechanism 2, that is, entirety of the invention is moved down on the presser feet guide rod 12 with lift foot lifting mechanism 2
Dynamic so that moving knife 22 and stationary knife 7 will not be influenced by fabric thickness.In addition, it is carried out by stationary knife 7 and the cooperation of moving knife 22
Trimming, anchoring only need to gently hold sewing and reach the standard grade.
The moving knife 22 includes blade 6 and handle of a knife 5, and handle of a knife is rotatably installed in presser feet fixed seat 10, the forepart installation of handle of a knife
There is the blade 6, the rear portion of handle of a knife is connect with the drive system.The forepart of the handle of a knife is provided with mounting groove 21, blade 6
In rear portion insertion mounting groove 21；Bar hole 20 is provided on the blade in mounting groove 21, more than one clamping screw is (not
Show) across the bar hole 20 and blade 6 and handle of a knife 5 are fixed as one.The design allows the length of moving knife to carry out
Adjustment.
The drive system includes connector motor magnet 4, eccentric pendulum 13 and positioning pin 17；The output shaft of connector motor magnet 4
Eccentric pendulum 13 is driven to rotate, the positioning pin 17 mounted on 13 outer end of eccentric pendulum is inserted into the bar hole 18 of 5 rear end of handle of a knife.Make
For those skilled in the art, drive system it is various informative, the design is simplest one kind.
The drive system is arranged on the rear side of presser feet fixed seat 10, and the moving knife 22 is L-shaped.The design so that driving is
The area that system and moving knife 22 are appeared in the operator visual field is small, will not leave behind excessive shade, easily operated.
The stationary knife 7 is mounted vertically in the front side of presser feet fixed seat 10, and cutting edge I 19 is the sword slot of V-type；The cutting edge II
15 be correspondingly arranged into it is vertical.Anchoring pulls back reaching the standard grade for sewing so that in the sword slot for just closing embedded V-type of reaching the standard grade, then,
Moving knife is swung, and while the cutting edge II 15 of moving knife is slided along the sword slot of V-type, will reach the standard grade cutting, fulfil assignment.
The leading flank of the stationary knife 7 is the cambered surface of evagination, and the center line of cambered surface is consistent with the centre of gyration line of moving knife.This sets
Meter enables the leading flank of stationary knife with II 15 perfect cooperation of cutting edge of moving knife, trimming stabilization, not easy to wear.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore：It is all according to
The equivalence changes that structure, shape, the principle of the present invention is done, should all be covered by within protection scope of the present invention.
Claims (7)
1. the thread cutting mechanism of flat seam machine, including
Presser feet fixed seat is mounted on the lower part of the presser foot lifter guide rod of head of sewing machine；
Anchoring is mounted in presser feet fixed seat and for clamping reaching the standard grade for sewing；
It is characterized in that, it further includes
Stationary knife is vertically fixedly mounted on the front side of presser feet fixed seat, cutting edge I is provided on stationary knife；
Moving knife, including blade and handle of a knife, handle of a knife is rotatably installed in presser feet fixed seat, and cutting edge II is provided on front side of blade,
When moving knife deflects to certain position, the cutting edge II of moving knife is slid on the cutting edge I of stationary knife and trimming；
Drive system is arranged in presser feet fixed seat, and stationary knife is driven to swing back and forth.
2. the thread cutting mechanism of flat seam machine according to claim 1, which is characterized in that the forepart of the handle of a knife is equipped with described
Blade, the rear portion of handle of a knife are connect with the drive system.
3. the thread cutting mechanism of flat seam machine according to claim 2, which is characterized in that the forepart of the handle of a knife is provided with installation
Slot, the rear portion of blade are embedded in mounting groove；Bar hole, more than one clamping screw are provided on the blade in mounting groove
Across the bar hole and blade and handle of a knife are fixed as one.
4. the thread cutting mechanism of flat seam machine according to claim 1, which is characterized in that the drive system includes revolution electromagnetism
Iron, eccentric pendulum and positioning pin；The output shaft of connector motor magnet drives eccentric pendulum rotation, mounted on determining for eccentric pendulum outer end
Position pin is inserted into the bar hole of handle of a knife rear end.
5. the thread cutting mechanism of flat seam machine according to claim 1, which is characterized in that the drive system is arranged on presser feet and consolidates
The rear side of reservation, the moving knife are L-shaped.
6. the thread cutting mechanism of flat seam machine according to claim 5, which is characterized in that the cutting edge I is the sword slot of V-type；Institute
State cutting edge II be correspondingly arranged into it is vertical.
7. the thread cutting mechanism of flat seam machine according to claim 6, which is characterized in that the leading flank of the stationary knife is evagination
Cambered surface, the center line of cambered surface are consistent with the centre of gyration line of moving knife.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510239446.4A CN104805605B (en) | 2015-05-12 | 2015-05-12 | The thread cutting mechanism of flat seam machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510239446.4A CN104805605B (en) | 2015-05-12 | 2015-05-12 | The thread cutting mechanism of flat seam machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104805605A CN104805605A (en) | 2015-07-29 |
| CN104805605B true CN104805605B (en) | 2018-07-10 |
Family
ID=53690784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510239446.4A Active CN104805605B (en) | 2015-05-12 | 2015-05-12 | The thread cutting mechanism of flat seam machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104805605B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133215B (en) * | 2015-09-19 | 2018-10-23 | 浙江中捷缝纫科技有限公司 | A kind of thread cutting mechanism of sewing machine |
| DE102018001176A1 (en) * | 2017-02-16 | 2018-08-16 | Pfaff Industriesysteme Und Maschinen Gmbh | Sewing equipment, in particular for the production of darts |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058923A (en) * | 2006-04-19 | 2007-10-24 | 兄弟工业株式会社 | Keyhole sawing mechine |
| CN101260600A (en) * | 2007-03-06 | 2008-09-10 | 兄弟工业株式会社 | Sewing machine |
| CN101424015A (en) * | 2007-10-29 | 2009-05-06 | 大和缝纫机制造株式会社 | Wire-cutting device for sewing machine |
| CN102206903A (en) * | 2010-03-31 | 2011-10-05 | 兄弟工业株式会社 | Sewing machine |
| CN203807733U (en) * | 2014-04-04 | 2014-09-03 | 启翔股份有限公司 | Upper thread trimming mechanism of sewing machine |
| CN205205441U (en) * | 2015-05-12 | 2016-05-04 | 浙江杜马缝纫机股份有限公司 | Thread trimming mechanism of flush joint machine |
-
2015
- 2015-05-12 CN CN201510239446.4A patent/CN104805605B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058923A (en) * | 2006-04-19 | 2007-10-24 | 兄弟工业株式会社 | Keyhole sawing mechine |
| CN101260600A (en) * | 2007-03-06 | 2008-09-10 | 兄弟工业株式会社 | Sewing machine |
| CN101424015A (en) * | 2007-10-29 | 2009-05-06 | 大和缝纫机制造株式会社 | Wire-cutting device for sewing machine |
| CN102206903A (en) * | 2010-03-31 | 2011-10-05 | 兄弟工业株式会社 | Sewing machine |
| CN203807733U (en) * | 2014-04-04 | 2014-09-03 | 启翔股份有限公司 | Upper thread trimming mechanism of sewing machine |
| CN205205441U (en) * | 2015-05-12 | 2016-05-04 | 浙江杜马缝纫机股份有限公司 | Thread trimming mechanism of flush joint machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104805605A (en) | 2015-07-29 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Thread cutting mechanism of lockstitch sewing machine Effective date of registration: 20220616 Granted publication date: 20180710 Pledgee: Zhejiang Taizhou Jiaojiang Rural Commercial Bank Co.,Ltd. Xiachen sub branch Pledgor: ZHEJIANG DUMA SEWING MACHINE Co.,Ltd. Registration number: Y2022330000990 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |