CN105420947A - Thread cutting mechanism of sewing machine - Google Patents
Thread cutting mechanism of sewing machine Download PDFInfo
- Publication number
- CN105420947A CN105420947A CN201510971375.7A CN201510971375A CN105420947A CN 105420947 A CN105420947 A CN 105420947A CN 201510971375 A CN201510971375 A CN 201510971375A CN 105420947 A CN105420947 A CN 105420947A
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- CN
- China
- Prior art keywords
- motor
- tangent line
- tangent
- thread
- driving mechanism
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- 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
Abstract
The invention belongs to the technical field of sewing machines, and particularly relates to a thread cutting mechanism of a sewing machine. The thread cutting mechanism comprises a motor. The motor is connected with a driving mechanism which drives a thread cutter rest to rotate around the axis of the tool rest. A movable cuter is arranged on the thread cutter rest. The motor rotates forwards and backwards to drive the driving mechanism to drive the thread cutter rest to rotate so that the movable cutter can cut a thread or the driving mechanism drives the thread cutter rest to rotate so that the movable cutter can retreat. A thread cutting cam and part of thread cutting driving mechanism parts are omitted, the motor is used for directly driving the driving mechanism so as to drive the movable cutter to rotate and cut the thread, and the thread cutting mechanism is simple in structure and easy to maintain; the motor directly drives the movable cutter through the driving mechanism, the movement curve of the movable cutter is not limited by the appearance of the thread cutting cam, the movement speed, the movement time and other parameters of the movable cutter are directly controlled by the motor, and therefore the thread cutting time and the thread cutting length are easy to control.
Description
Technical field:
The invention belongs to sewing machine technique field, refer in particular to a kind of tangent mechanism of Sewing machines.
Background technology:
Existing Sewing machines tangent mechanism adopts electromagnet or cylinder as driving power, utilizes the action of tangential cam Track fusion tangent mechanism, to drive moving knife tangent line; Have thread-cutting driving device part comparison many, fault rate is higher; The adjustment of tangential length is more difficult, and the needs such as thread cutting action time, tangential velocity and thread take-up mechanism match; The adjustment of tangent line mainly relies on mechanical adjustment, regulates the defects such as inconvenient.
Summary of the invention:
The object of this invention is to provide a kind of structure simple, the tangent mechanism of the Sewing machines of easy-maintaining.
The present invention is achieved in that
A kind of tangent mechanism of Sewing machines, include motor, motor is connected with driving mechanism, driving mechanism drives tangent line knife rest to rotate around its axis, tangent line knife rest is provided with moving knife, and motor forward and backward drives driving mechanism to drive tangent line blade holder turns to realize moving knife tangent line or driving mechanism and drives tangent line blade holder turns to realize moving knife to return.
In technique scheme, described driving mechanism is swing-bar mechanism or gear mechanism.
In technique scheme, described swing-bar mechanism includes tangent line crank, more than one interconnective connecting rod, and one end of described tangent line crank is arranged in the rotating shaft of motor, and the other end of tangent line crank is connected with tangent line knife rest by connecting rod.
In technique scheme, described connecting rod is provided with one, and one end of connecting rod is connected with tangent line crank, the other end is connected with tangent line knife rest.
In technique scheme, described gear mechanism is provided with driving gear in the rotating shaft of motor, and the rotating shaft synchronous axial system of driving gear and motor, is provided with double wedge at the outer surface of cutting-off tool rest, the double wedge engaged transmission of driving gear and cutting-off tool rest.
In technique scheme, between described driving gear and cutting-off tool rest, be provided with the idler gear of more than one-level, correspondingly, the double wedge engaged transmission of final stage idler gear and cutting-off tool rest.
In technique scheme, described motor is fixed on casing by mount pad.
The advantage that the present invention gives prominence to compared to existing technology is:
1, the present invention cancels tangential cam and part tangent line driving mechanism part, adopts motor direct-drive driving mechanism, and drive moving knife to rotate tangent line, tangent mechanism structure is simple, easy-maintaining;
The parameters such as 2, motor of the present invention is by driving mechanism Direct driver moving knife, and moving knife operation curve does not limit by tangential cam profile, directly controls moving knife responsiveness by motor, moving knife actuation time, the therefore tangent line time, tangential length is easy to control;
3, invention increases operating efficiency, use easier.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the front view that the present invention is arranged on casing;
Fig. 3 is the upward view that the present invention is arranged on casing;
Fig. 4 is one of the present invention's stereogram of being arranged on casing;
Fig. 5 is the stereogram two that the present invention is arranged on casing.
Detailed description of the invention:
With specific embodiment, the invention will be further described below, see Fig. 1-5:
A kind of tangent mechanism of Sewing machines, include motor 1, the rotating shaft 2 of motor is connected with driving mechanism, driving mechanism drives tangent line knife rest 3 to rotate around its axis, tangent line knife rest 3 is provided with moving knife 4, motor 1 forward and backward drives the rotation of driving mechanism drive tangent line knife rest 3 to realize moving knife 4 tangent line or drive driving mechanism to drive tangent line knife rest 3 to rotate to realize moving knife 4 and returns.The corresponding actions turning to and drive tangent line knife rest 3 to complete of the rotating shaft 2 of motor designs according to actual conditions.
Above-mentioned driving mechanism is swing-bar mechanism, include tangent line crank 5, connecting rod 6, screw fastening is passed through in the rotating shaft 2 that one end of described tangent line crank 5 is sleeved on motor, it is hinged that axial screw is passed through in the other end of tangent line crank 5 and one end of connecting rod 6, tangent line knife rest 3 is provided with connecting hole, and the other end of connecting rod 6 is connected by axial screw with tangent line knife rest 3.
Certainly, connecting rod 6 can arrange more than one, is hinged between connecting rod 6 by axial screw, and the connecting rod 6 being positioned at both ends connects tangent line knife rest 3 and tangent line crank 5 respectively.
The operation principle of swing-bar mechanism is: rotating shaft 2 forward or reverse of motor, drives one end of tangent line crank 5 to rotate, and drives tangent line knife rest 3 to rotate around its axis by connecting rod 6 transmitting force, drive cutting knife 4 tangent line or return.
Except above-mentioned swing-bar mechanism, driving mechanism also can be gear mechanism, and the rotating shaft 2 of motor is provided with driving gear, rotating shaft 2 synchronous axial system of driving gear and motor, the outer surface of cutting-off tool rest 3 is provided with double wedge, the double wedge engaged transmission of driving gear and cutting-off tool rest 3.
Certainly, also can be provided with the idler gear of more than one-level between driving gear and cutting-off tool rest 3, correspondingly, be positioned at the double wedge engaged transmission on the idler gear of final stage and cutting-off tool rest 3.Idler gear is arranged on gear shaft, and gear shaft is arranged on casing.The quantity of concrete gear is determined according to actual conditions.
The operation principle of gear mechanism is: the forward or reverse of the rotating shaft 2 of motor, drives driving gear to rotate, and by idler gear or the double wedge engaged transmission directly and on cutting-off tool rest 3, drives cutting-off tool rest 3 to rotate around its axis, drives cutting knife 4 tangent line or return.
Above-mentioned motor 1 is fixed on casing 8 by mount pad 7.Mount pad 7 by after screw and motor 1 end plate connection, then is fixed by screws on casing 8.
The present embodiment motor 1 adopts stepper motor.
Due to the difference of Sewing machines type, cutting-off tool rest 3 difference is set, can be sleeved on outside lower shaft protheca 9, the axis of cutting-off tool rest 3 and the axis collinear of lower shaft protheca, rotate around cutting-off tool rest 3 lower shaft protheca; Also can be arranged in the endoporus on casing 8, this endoporus and cutting-off tool rest 3 axis collinear, the outer wall of cutting-off tool rest 3 contacts with casing 8 endoporus and connects, and cutting-off tool rest 3 rotates around its axis at casing 8 endoporus, can also be other connection and rotating manner.
Above-described embodiment is only one of preferred embodiment of the present invention, not limits practical range of the present invention with this, therefore: all equivalence changes done according to shape of the present invention, structure, principle, all should be covered by within protection scope of the present invention.
Claims (7)
1. the tangent mechanism of a Sewing machines, it is characterized in that: include motor, motor is connected with driving mechanism, driving mechanism drives tangent line knife rest to rotate around its axis, tangent line knife rest is provided with moving knife, and motor forward and backward drives driving mechanism to drive tangent line blade holder turns to realize moving knife tangent line or drive tangent line blade holder turns to realize moving knife and returns.
2. the tangent mechanism of a kind of Sewing machines according to claim 1, is characterized in that: described driving mechanism is swing-bar mechanism or gear mechanism.
3. the tangent mechanism of a kind of Sewing machines according to claim 2, it is characterized in that: described swing-bar mechanism includes tangent line crank, more than one interconnective connecting rod, one end of described tangent line crank is arranged in the rotating shaft of motor, and the other end of tangent line crank is connected with tangent line knife rest by connecting rod.
4. the tangent mechanism of a kind of Sewing machines according to claim 3, is characterized in that: described connecting rod is provided with one, and one end of connecting rod is connected with tangent line crank, the other end is connected with tangent line knife rest.
5. the tangent mechanism of a kind of Sewing machines according to claim 2, it is characterized in that: described gear mechanism is provided with driving gear in the rotating shaft of motor, the rotating shaft synchronous axial system of driving gear and motor, the outer surface of cutting-off tool rest is provided with double wedge, the double wedge engaged transmission of driving gear and cutting-off tool rest.
6. the tangent mechanism of a kind of Sewing machines according to claim 5, is characterized in that: the idler gear being provided with more than one-level between described driving gear and cutting-off tool rest, correspondingly, and the double wedge engaged transmission of final stage idler gear and cutting-off tool rest.
7. the tangent mechanism of a kind of Sewing machines according to claim 1, is characterized in that: described motor is fixed on casing by mount pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510971375.7A CN105420947A (en) | 2015-12-21 | 2015-12-21 | Thread cutting mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510971375.7A CN105420947A (en) | 2015-12-21 | 2015-12-21 | Thread cutting mechanism of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105420947A true CN105420947A (en) | 2016-03-23 |
Family
ID=55499470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510971375.7A Pending CN105420947A (en) | 2015-12-21 | 2015-12-21 | Thread cutting mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105420947A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283420A (en) * | 2016-10-26 | 2017-01-04 | 杰克缝纫机股份有限公司 | A kind of thread cutting method of sewing machine |
| CN106283421A (en) * | 2016-10-26 | 2017-01-04 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN107142624A (en) * | 2017-07-06 | 2017-09-08 | 杰克缝纫机股份有限公司 | Sewing machine and thread cutting mechanism of sewing machine |
Citations (11)
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|---|---|---|---|---|
| US3173393A (en) * | 1961-12-13 | 1965-03-16 | Pfaff Ag G M | Thread cutting mechanism for lockstitch sewing machines |
| JPS57134190A (en) * | 1981-02-13 | 1982-08-19 | Brother Ind Ltd | Automatic cotton cutting sewing machine |
| US5042408A (en) * | 1989-10-31 | 1991-08-27 | Brother Kogyo Kabushiki Kaisha | Sewing machine having thread cutting mechanism and method for minimizing length of leading end portion of needle thread |
| CN200978336Y (en) * | 2006-11-28 | 2007-11-21 | 张文博 | Automatic wire-cutting working seam machine modified from common working seam machine |
| CN102877230A (en) * | 2012-06-19 | 2013-01-16 | 新杰克缝纫机股份有限公司 | Automatic cutting device of sewing machine |
| CN203754982U (en) * | 2014-01-24 | 2014-08-06 | 新杰克缝纫机股份有限公司 | Sewing machine trimming knife rest structure |
| CN105088545A (en) * | 2015-09-02 | 2015-11-25 | 蔡金财 | Cylinder type direct-driving high-speed automatic thread cutting sewing machine with computer |
| CN105113149A (en) * | 2015-09-11 | 2015-12-02 | 张章生 | Directly-driven thread cutting mechanism of sewing machine |
| CN105113150A (en) * | 2015-09-19 | 2015-12-02 | 浙江中捷缝纫科技有限公司 | Sewing machine |
| CN105133215A (en) * | 2015-09-19 | 2015-12-09 | 浙江中捷缝纫科技有限公司 | Thread cutting mechanism of sewing machine |
| CN205242046U (en) * | 2015-12-21 | 2016-05-18 | 拓卡奔马机电科技有限公司 | Sewing machine's thread cutting mechanism |
-
2015
- 2015-12-21 CN CN201510971375.7A patent/CN105420947A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173393A (en) * | 1961-12-13 | 1965-03-16 | Pfaff Ag G M | Thread cutting mechanism for lockstitch sewing machines |
| JPS57134190A (en) * | 1981-02-13 | 1982-08-19 | Brother Ind Ltd | Automatic cotton cutting sewing machine |
| US5042408A (en) * | 1989-10-31 | 1991-08-27 | Brother Kogyo Kabushiki Kaisha | Sewing machine having thread cutting mechanism and method for minimizing length of leading end portion of needle thread |
| CN200978336Y (en) * | 2006-11-28 | 2007-11-21 | 张文博 | Automatic wire-cutting working seam machine modified from common working seam machine |
| CN102877230A (en) * | 2012-06-19 | 2013-01-16 | 新杰克缝纫机股份有限公司 | Automatic cutting device of sewing machine |
| CN203754982U (en) * | 2014-01-24 | 2014-08-06 | 新杰克缝纫机股份有限公司 | Sewing machine trimming knife rest structure |
| CN105088545A (en) * | 2015-09-02 | 2015-11-25 | 蔡金财 | Cylinder type direct-driving high-speed automatic thread cutting sewing machine with computer |
| CN105113149A (en) * | 2015-09-11 | 2015-12-02 | 张章生 | Directly-driven thread cutting mechanism of sewing machine |
| CN105113150A (en) * | 2015-09-19 | 2015-12-02 | 浙江中捷缝纫科技有限公司 | Sewing machine |
| CN105133215A (en) * | 2015-09-19 | 2015-12-09 | 浙江中捷缝纫科技有限公司 | Thread cutting mechanism of sewing machine |
| CN205242046U (en) * | 2015-12-21 | 2016-05-18 | 拓卡奔马机电科技有限公司 | Sewing machine's thread cutting mechanism |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283420A (en) * | 2016-10-26 | 2017-01-04 | 杰克缝纫机股份有限公司 | A kind of thread cutting method of sewing machine |
| CN106283421A (en) * | 2016-10-26 | 2017-01-04 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN106283421B (en) * | 2016-10-26 | 2021-05-04 | 杰克缝纫机股份有限公司 | Sewing machine |
| CN107142624A (en) * | 2017-07-06 | 2017-09-08 | 杰克缝纫机股份有限公司 | Sewing machine and thread cutting mechanism of sewing machine |
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Application publication date: 20160323 |
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| RJ01 | Rejection of invention patent application after publication |