CN102877230A - Automatic cutting device of sewing machine - Google Patents
Automatic cutting device of sewing machine Download PDFInfo
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- CN102877230A CN102877230A CN2012102041312A CN201210204131A CN102877230A CN 102877230 A CN102877230 A CN 102877230A CN 2012102041312 A CN2012102041312 A CN 2012102041312A CN 201210204131 A CN201210204131 A CN 201210204131A CN 102877230 A CN102877230 A CN 102877230A
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- trimming
- knife
- drive link
- electromagnet
- cutting
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Abstract
The invention provides an automatic cutting device of a sewing machine and belongs to the technical field of sewing machines. The device can solve the problems of discontinuous operation, affected production efficiency and the like caused by the needle-bumping phenomenon in the prior art. The device comprises a moving knife, a fixing knife, a connecting rod and a cutting electromagnet, which cooperate with each other to cut threads, wherein the fixing knife is fixed on a base of the sewing machine, the moving knife and one end of the connecting rod are fixed on a cutting knife holder, the cutting knife holder is sleeved on a lower shaft, the other end of the connecting rod is hinged with one end of a transmission rod, and the other end of the transmission rod is connected with a moving iron of the cutting electromagnet; and a feed lifting rock shaft is provided with a cutting cam, the cutting cam is positioned on the side of the transmission rod, and the transmission rod is fixedly provided with a cylindrical pin which is matched with the cutting cam to drive the transmission rod to move. The device provided by the invention has the advantages of high cutting accuracy, convenience in operation, simple structure and the like.
Description
Technical field
The invention belongs to sewing machine technique field, particularly automatic thread severing device of sewing machine.
Background technology
Growing along with sewing machine technique, the Sewing machines with automatic shearing function has reduced workload because of it, has guaranteed the continuity of operation, is deeply made liking of industry producer.
At present, the automatic thread trimming device of Sewing machines is normally by moving knife, the stationary knife trimming that matches, wherein moving knife is to drive the moving knife knife rest by lower shaft by transmission mechanism, and the moving knife knife rest drives the displacement of moving knife, namely is to drive moving knife by lower shaft in brief, this structure is often because lower shaft is different from the rotating speed of upper axle, so be provided with Compulsory reduction mechanism adjustment, but still have the striker phenomenon of certain probability, increased simultaneously mechanism element, increase cost, go back so that noise has also increased.
Summary of the invention
The automatic thread trimming device that the trimming precision that the purpose of this invention is to provide Sewing machines is high, avoid the striker phenomenon.
The object of the present invention is achieved like this: automatic thread severing device of sewing machine, comprising to cooperatively interact cuts off the moving knife of line, stationary knife, connecting rod and trimming electromagnet, described stationary knife is fixed on the Sewing machines support, it is characterized in that: an end of described moving knife and connecting rod is fixed on the trimming knife rest, the trimming knife rest is sleeved on the lower shaft, one end of the other end of connecting rod and drive link is hinged, the other end of drive link is connected with the moving iron of trimming electromagnet, the trimming cam is installed on the feed lifting rock shaft, the trimming cam is positioned at a side of drive link, be fixed with the roller that cooperates the drive drive link to move with the trimming cam on the drive link, the action of trimming electromagnet drives moving knife and is in behind the trimming state, the rotation of trimming cam drives moving knife by roller and rotates, and moving knife rotates and cooperates trimming with stationary knife.
Operation principle of the present invention is: the same rotating speed phenomenon of having utilized feed lifting rock shaft and upper axle, when the pin position of lifting is once got back in the eedle reciprocating motion, feed lifting rock shaft rotates simultaneously trimming cam driven moving knife rotation of a week, cooperate stationary knife to finish the trimming process, in actual use, the user sends the trimming instruction or makes when complete, the action of trimming electromagnet drives moving knife and is in the trimming state for the treatment of, even roller is positioned at the position that can collide with the trimming cam, after finishing the trimming process, the trimming electromagnet drives moving knife and resets, and the precision of this cutting facility trimming is higher, avoided the striker phenomenon, applied widely.
In above-mentioned automatic thread severing device of sewing machine, described drive link is located at the below of feed lifting rock shaft.
In above-mentioned automatic thread severing device of sewing machine, the other end of described drive link with the concrete structure that the moving iron of trimming electromagnet is connected is: the moving iron of drive link and trimming electromagnet be arranged in parallel, the vertical connecting pin that connects of the other end of drive link, connecting pin is fixedly connected with by connecting plate with the outer end of moving iron.
The present invention compared to existing technology outstanding and useful technique effect is:
1, feed lifting rock shaft of the present invention is provided with the trimming cam and matches with roller collision block on the drive link and drive the trimming knife rest, feed lifting rock shaft is identical with the rotating speed of main shaft, therefore when eedle lifts, moving knife on the trimming knife rest cooperates the stationary knife trimming, namely avoided the striker phenomenon, so that the course of work is smooth, has improved the trimming precision and guaranteed production efficiency.
2, of the present invention simple in structure, novel.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is structural representation of the present invention.
Fig. 3 is structural representation of the present invention.
The specific embodiment
The invention will be further described with specific embodiment below in conjunction with accompanying drawing, referring to Fig. 1-3:
Automatic thread severing device of sewing machine, the moving knife 1 that comprising to cooperatively interact cuts off line, stationary knife 2, connecting rod 3 and trimming electromagnet, described stationary knife 2 is fixed on the Sewing machines support, one end of described moving knife 1 and connecting rod 3 is fixed on the trimming knife rest 4, trimming knife rest 4 is sleeved on the lower shaft 5, one end of the other end of connecting rod 3 and drive link 6 is hinged, the other end of drive link 6 is connected with the moving iron 11 of trimming electromagnet, trimming cam 8 is installed on the feed lifting rock shaft 7, the trimming cam is positioned at a side of drive link 6, be fixed with the roller 9 that cooperates drive drive link 6 to move with the trimming cam on the drive link 6, the action of trimming electromagnet 10 drives moving knife 1 and is in behind the trimming state, the rotation of trimming cam 8 drives moving knife 1 by roller 9 and rotates, and moving knife 1 rotates and cooperates trimming with stationary knife 2.Operation principle of the present invention is: the same rotating speed phenomenon of having utilized axle on feed lifting rock shaft 7 and the Sewing machines, when the pin position of lifting is once got back in the eedle reciprocating motion, feed lifting rock shaft 7 rotates simultaneously trimming cam 8 drive moving knife 1 rotation of a week, cooperate stationary knife 2 to finish the trimming process, in actual use, the user sends the trimming instruction or makes when complete, the action of trimming electromagnet 10 drives moving knife 1 and is in the trimming state for the treatment of, be that roller 9 is positioned at the position that can collide with trimming cam 8, after finishing the trimming process, trimming electromagnet 10 drives moving knife 1 and resets, and the precision of this cutting facility trimming is higher, avoided the striker phenomenon, applied widely.
Above-mentioned drive link 6 be located at feed lifting rock shaft 5 below.The constitutional detail of Sewing machines support is more, and therefore in the space reasonability of considering structural design, the below of drive link 6 being located at feed lifting rock shaft 5 is comparatively appropriate, and cam 8 rotations are satisfied in the while installation site can clash into roller 9.
The other end at above-mentioned drive link 6 with the concrete structure that the moving iron 11 of trimming electromagnet is connected is: drive link 6 be arranged in parallel with the moving iron 11 of trimming electromagnet, the vertical connecting pin 12 that connects of the other end of drive link 6, connecting pin is fixedly connected with by connecting plate 13 with the outer end of moving iron.The moving iron 11 of trimming electromagnet is one-body molded with trimming electromagnet inner core.
Above-described embodiment is preferred embodiment of the present invention only, is not to limit according to this protection scope of the present invention, therefore: all equivalences of doing according to structure of the present invention, shape, principle change, and all should be covered by within protection scope of the present invention.
Claims (3)
1. automatic thread severing device of sewing machine, the moving knife (1) that comprising to cooperatively interact cuts off line, stationary knife (2), connecting rod (3) and trimming electromagnet, described stationary knife (2) is fixed on the Sewing machines support, it is characterized in that: an end of described moving knife (1) and connecting rod (3) is fixed on the trimming knife rest (4), trimming knife rest (4) is sleeved on the lower shaft (5), one end of the other end of connecting rod (3) and drive link (6) is hinged, the other end of drive link (6) is connected with the moving iron (11) of trimming electromagnet, lift trimming cam (8) is installed on the last item (7), the trimming cam is positioned at a side of drive link (6), be fixed with the roller (9) that cooperates drive drive link (6) to move with the trimming cam on the drive link (6), the action of trimming electromagnet (10) drives moving knife (1) and is in behind the trimming state, the rotation of trimming cam (8) drives moving knife (1) by roller (9) and rotates, and moving knife (1) rotates and cooperates trimming with stationary knife (2).
2. automatic thread severing device of sewing machine according to claim 1, it is characterized in that: described drive link (6) is located at the below of feed lifting rock shaft (5).
3. automatic thread severing device of sewing machine according to claim 1, it is characterized in that: the other end of described drive link (6) with the concrete structure that the moving iron (11) of trimming electromagnet is connected is: drive link (6) be arranged in parallel with the moving iron (11) of trimming electromagnet, the vertical connecting pin (12) that connects of the other end of drive link (6), connecting pin is fixedly connected with by connecting plate (13) with the outer end of moving iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102041312A CN102877230A (en) | 2012-06-19 | 2012-06-19 | Automatic cutting device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102041312A CN102877230A (en) | 2012-06-19 | 2012-06-19 | Automatic cutting device of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102877230A true CN102877230A (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102041312A Pending CN102877230A (en) | 2012-06-19 | 2012-06-19 | Automatic cutting device of sewing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN102877230A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105420947A (en) * | 2015-12-21 | 2016-03-23 | 拓卡奔马机电科技有限公司 | Thread cutting mechanism of sewing machine |
| CN106868735A (en) * | 2017-04-01 | 2017-06-20 | 杰克缝纫机股份有限公司 | A kind of automatic shearing mechanism and sewing machine |
| CN106988039A (en) * | 2016-01-20 | 2017-07-28 | 天津宝盈电脑机械有限公司 | New type of cam thread cutting mechanism |
| CN108425190A (en) * | 2018-04-04 | 2018-08-21 | 林小玲 | A kind of cutting facility of zigzag sewing machine |
| CN108796857A (en) * | 2018-06-11 | 2018-11-13 | 池州市旭豪机械有限公司 | A kind of thread cutting mechanism of sewing machine using trimming cam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124795A (en) * | 1994-12-17 | 1996-06-19 | 重机公司 | Apparatus for controlling cutting thread of sewing machine |
| JPH09299661A (en) * | 1996-05-14 | 1997-11-25 | Juki Corp | Thread cutting device and method for sewing machine |
| CN201416092Y (en) * | 2009-05-06 | 2010-03-03 | 浙江方正电机股份有限公司 | Circular knife driving mechanism of automatic thread trimming lockstitch sewing machine |
| CN101709537A (en) * | 2009-11-03 | 2010-05-19 | 西安标准工业股份有限公司 | Line cutting structure for sewing machines |
| 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 |
-
2012
- 2012-06-19 CN CN2012102041312A patent/CN102877230A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124795A (en) * | 1994-12-17 | 1996-06-19 | 重机公司 | Apparatus for controlling cutting thread of sewing machine |
| JPH09299661A (en) * | 1996-05-14 | 1997-11-25 | Juki Corp | Thread cutting device and method for sewing machine |
| CN201416092Y (en) * | 2009-05-06 | 2010-03-03 | 浙江方正电机股份有限公司 | Circular knife driving mechanism of automatic thread trimming lockstitch sewing machine |
| CN101709537A (en) * | 2009-11-03 | 2010-05-19 | 西安标准工业股份有限公司 | Line cutting structure for sewing machines |
| 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 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105420947A (en) * | 2015-12-21 | 2016-03-23 | 拓卡奔马机电科技有限公司 | Thread cutting mechanism of sewing machine |
| CN106988039A (en) * | 2016-01-20 | 2017-07-28 | 天津宝盈电脑机械有限公司 | New type of cam thread cutting mechanism |
| CN106868735A (en) * | 2017-04-01 | 2017-06-20 | 杰克缝纫机股份有限公司 | A kind of automatic shearing mechanism and sewing machine |
| CN106868735B (en) * | 2017-04-01 | 2022-04-12 | 杰克科技股份有限公司 | An automatic thread trimming mechanism and sewing machine |
| CN108425190A (en) * | 2018-04-04 | 2018-08-21 | 林小玲 | A kind of cutting facility of zigzag 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 |
| CN108796857A (en) * | 2018-06-11 | 2018-11-13 | 池州市旭豪机械有限公司 | A kind of thread cutting mechanism of sewing machine using trimming cam |
| CN108796857B (en) * | 2018-06-11 | 2021-11-12 | 池州市旭豪机械有限公司 | Sewing machine thread trimming mechanism utilizing thread trimming cam |
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Application publication date: 20130116 |