CN111197206A - Thread cutting control mechanism and sewing machine - Google Patents
Thread cutting control mechanism and sewing machine Download PDFInfo
- Publication number
- CN111197206A CN111197206A CN201811384792.1A CN201811384792A CN111197206A CN 111197206 A CN111197206 A CN 111197206A CN 201811384792 A CN201811384792 A CN 201811384792A CN 111197206 A CN111197206 A CN 111197206A
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- thread
- sewing machine
- sewing
- sensor
- control mechanism
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- 238000009958 sewing Methods 0.000 title claims abstract description 75
- 230000007246 mechanism Effects 0.000 title claims abstract description 38
- 238000009966 trimming Methods 0.000 claims abstract description 54
- 239000004744 fabric Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 abstract description 7
- 230000035484 reaction time Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2305/00—Operations on the work before or after sewing
- D05D2305/32—Measuring
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a thread cutting control mechanism and a sewing machine comprising the same, wherein the thread cutting control mechanism comprises a sensor for sensing the edge of a sewing material, the sensor is relatively fixed with a sewing table panel in the sewing machine and is positioned at the rear side of a thread cutting knife in the sewing machine along the cloth feeding direction of a cloth feeding mechanism in the sewing machine for feeding the cloth forwards, and the distance X between the sensor and the cutting edge of the thread cutting knife is 15-30 mm. In the application, after the distance X between the sensor and the cutting edge of the thread trimmer is set to be 15-30mm, the sensor is close to the thread trimmer, the length of thread ends remained on a sewing material after thread trimming can be effectively controlled, the length of the thread ends is stable, the thread trimming effect of short thread ends can be achieved, secondary trimming of the thread ends is omitted, labor cost is saved, and sewing efficiency and sewing quality are improved.
Description
Technical Field
The invention relates to a thread trimming control mechanism.
The invention also relates to a sewing machine comprising the thread trimming control mechanism.
Background
At present, the full-automatic overedger in the market can realize automatic thread trimming, and the full-automatic overedger is provided with a fixed knife, a movable knife capable of being occluded with the fixed knife and a thread trimming driving source for driving the movable knife to move, wherein the thread trimming driving source is connected with an electric control module in the overedger; meanwhile, the overedger is also provided with a sensor capable of sensing the edge of the sewing material, the sensor is connected with the electric control module, and the electric control module controls the action of the thread cutting driving source according to a feedback signal of the sensor so as to control the cutting time of the movable knife and further control the length of thread ends remained on the sewing material after thread cutting. However, in the current overedger, the installation position of the sensor is not proper, so that the length of the thread end remained on the sewing material after thread trimming is long, the length of the thread end is unstable, and a worker needs to trim the thread end for the second time, thereby increasing the labor cost and reducing the sewing efficiency and the quality of the sewing product.
Disclosure of Invention
In view of the above-described drawbacks of the prior art, an object of the present invention is to provide a thread control mechanism capable of effectively controlling the length of the thread end remaining on the work material after thread trimming, and eliminating the need for secondary trimming of the thread end.
In order to achieve the above object, the present invention provides a thread trimming control mechanism, comprising a sensor for sensing the edge of a sewing material, wherein the sensor is fixed relatively to a sewing table panel in a sewing machine; the sensor is positioned at the rear side of the thread cutting knife in the sewing machine along the cloth feeding direction of the cloth feeding mechanism in the sewing machine for feeding cloth forwards, and the distance X between the sensor and the cutting edge of the thread cutting knife is 15-30 mm.
Further, the distance X between the sensor and the blade of the thread trimmer in the sewing machine is 18-21 mm.
Further, the thread trimmer comprises a fixed knife and a movable knife capable of being meshed with the fixed knife, and the distance X is the distance between the sensor and the cutting edge of the fixed knife in the cloth feeding direction of the cloth feeding mechanism.
Further, the thread trimming control mechanism further comprises an electric control module in the sewing machine, the thread trimming cutter comprises a fixed cutter and a movable cutter capable of being meshed with the fixed cutter, the movable cutter is driven to move by a thread trimming driving source, the inductor and the thread trimming driving source are connected with the electric control module, and the electric control module prestores cutter feeding time.
Further, the cutting time is a constant value.
Further, the sensor is fixed to a sewing table panel or a needle plate in the sewing machine.
The invention also provides a sewing machine, wherein the shearing line control mechanism is arranged in the sewing machine.
As described above, the trimming control mechanism and the sewing machine according to the present invention have the following advantageous effects:
in the application, after the distance X between the sensor and the cutting edge of the thread trimmer is set to be 15-30mm, the sensor is close to the thread trimmer, the length of thread ends remained on a sewing material after thread trimming can be effectively controlled, the length of the thread ends is stable, the thread trimming effect of short thread ends can be achieved, secondary trimming of the thread ends is omitted, labor cost is saved, and sewing efficiency and sewing quality are improved.
Drawings
Fig. 1 is a schematic structural view of a shear line control mechanism according to the present application.
Fig. 2 is an enlarged view of circle a of fig. 1.
Description of the element reference numerals
1 inductor
2 seam table panel
3 fixed knife
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications.
The present application provides a sewing machine, preferably an overlock machine; as shown in fig. 1 and 2, a thread trimming control mechanism is installed in the sewing machine for controlling the thread trimming mechanism in the sewing machine to perform thread trimming operation so as to achieve the thread trimming effect of the stub. Generally speaking, a thread cutting mechanism in a sewing machine comprises a movable knife, a movable knife capable of moving towards a direction close to or far away from a fixed knife 3 and a thread cutting driving source for driving the movable knife to move, after the movable knife moves towards the direction close to the fixed knife 3, a movable knife blade on the movable knife is meshed with a fixed knife blade on the fixed knife 3, and then a thread is cut off, so that automatic thread cutting is realized; the movable knife and the fixed knife 3 form a thread trimmer in the sewing machine. For convenience of description, a cloth feeding direction of a cloth feeding mechanism in a sewing machine is defined as a forward direction, and thus, a cloth feeding mechanism in a sewing machine drives a sewing material to move forward during sewing.
As shown in fig. 1 and 2, the thread trimming control mechanism according to the present application includes a sensor 1 for sensing an edge of a sewing material, and the sensor 1 is fixed to a table top 2 of a sewing machine, so that the sensor 1 can be directly fixed to the table top 2, or a needle plate, or other parts of the sewing machine. Particularly, the sensor 1 is positioned at the rear side of the thread cutting knife in the sewing machine along the cloth feeding direction of the cloth feeding mechanism feeding the cloth forward in the sewing machine, namely in the front-rear direction, and the distance X between the sensor 1 and the cutting edge of the thread cutting knife is 15-30 mm. In the present embodiment, the distance X is a distance between the sensor 1 and the fixed blade edge of the fixed blade 3 in the cloth feeding direction of the cloth feeding mechanism, and the installation position of the sensor 1 is defined with the fixed blade edge as a reference. In addition, the trimming control mechanism also comprises an electric control module in the sewing machine, the electric control module is pre-stored with the cutting time S, and the inductor 1 and the trimming driving source are connected with the electric control module. The sensor 1 can be an infrared sensor or a photoelectric sensor.
The thread trimming control mechanism according to the present application may be used only for front thread trimming control at the time of starting sewing, only for rear thread trimming control at the time of finishing sewing, or for both of the front thread trimming control at the time of starting sewing and the rear thread trimming control at the time of finishing sewing. The principle that the thread trimming control mechanism is used for front thread trimming control during starting sewing is as follows: when the sewing is started, a front thread braid is formed at the front edge of the sewing material, and the front edge of the sewing material passes through the inductor 1 and the thread trimmer in sequence; when the electronic control module judges that the front edge of the sewn material passes through the inductor 1 according to the signal of the inductor 1, the electronic control module starts to time and controls the thread trimming driving source to act after the cutter setting time S is over, so that the cutting edges of the movable cutter and the fixed cutter are engaged, the front thread braid is trimmed, and the front thread trimming is completed. The principle that the thread trimming control mechanism is used for controlling the rear thread trimming after sewing is finished is as follows: after sewing is finished, a back thread braid is formed at the back edge of the sewing material, and the back edge of the sewing material passes through the inductor 1 and the thread trimmer in sequence; when the electronic control module judges that the rear edge of the sewn material passes through the inductor 1 according to the signal of the inductor 1, the electronic control module starts to time and controls the thread trimming driving source to act after the cutter setting time S is over, so that the movable cutter cutting edge and the fixed cutter cutting edge are engaged, a rear thread braid is trimmed, and the rear thread trimming is completed.
From the above, it can be seen that: the method for controlling the thread cutting by the thread cutting control mechanism is mainly characterized in that a signal is given out through the reaction time T of the inductor 1 for inducing the sewing material, the electric control module controls the movable cutter to cut the thread by controlling the action time of the thread cutting driving source after receiving the signal of the inductor 1, and therefore the length of the thread end remained on the sewing material after thread cutting is mainly influenced by the reaction time T of the inductor 1, the distance X from the inductor 1 to the cutting edge of the fixed cutter in the front-back direction and the thread cutting time S. Since the reaction time T and the thread cutting time S of the sensor 1 are generally constant values, the most influential variable of the length of the thread end remaining on the work material after thread trimming is the distance X of the sensor 1 from the edge of the stationary knife in the front-rear direction. Particularly, after the distance X between the inductor 1 and the fixed cutter cutting edge is set to be 15-30mm, the inductor 1 is close to the fixed cutter cutting edge, the length of a thread end remained on a sewing material after thread cutting can be effectively controlled, the length of the thread end is stable, the thread cutting effect of a short thread end can be realized, secondary trimming of the thread end is omitted, labor cost is saved, and sewing efficiency and sewing quality are improved.
Further, the reaction time T of the inductor 1 is a constant value, and is 12ms at the fastest speed; the cutter-off time S prestored in the electronic control module is also a constant value. In addition, the relationship between the distance X in the front-rear direction between the sensor 1 and the fixed blade edge and the length L of the thread end remaining on the work piece after thread trimming is shown in table 1, and it can be seen from table 1 that: the preferable range of the distance X between the sensor 1 and the cutting edge of the stationary knife in the front-rear direction is 18-21mm, in this range, the length L of the thread end remaining on the sewing material after thread trimming is relatively stable, the range of L is 2-8mm, and the thread trimming effect of the short thread end can be stably realized.
TABLE 1
In table 1, the unit of the distance X between the sensor 1 and the fixed blade in the front-rear direction and the length L of the thread end remaining on the work piece after thread trimming is mm.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a trimming control mechanism, is including inductor (1) that is arranged in responding to seam material edge, inductor (1) and sewing platform panel (2) relatively fixed among the sewing machine which characterized in that: the device comprises a sensor (1), a wire cutter, a cloth feeding mechanism and a sewing machine, wherein the sensor (1) is positioned on the rear side of the wire cutter in the sewing machine along the cloth feeding direction of the cloth feeding mechanism in the sewing machine for feeding cloth forwards, and the distance X between the sensor (1) and the cutting edge of the wire cutter is 15-30 mm.
2. The thread trimming control mechanism of claim 1, wherein: the distance X between the inductor (1) and the cutting edge of the thread trimmer in the sewing machine is 18-21 mm.
3. The thread trimming control mechanism according to claim 1 or 2, wherein: the thread trimmer comprises a fixed cutter (3) and a movable cutter capable of being meshed with the fixed cutter (3), and the distance X is the distance between the inductor (1) and the fixed cutter blade of the fixed cutter (3) in the cloth feeding direction of the cloth feeding mechanism.
4. The thread trimming control mechanism of claim 1, wherein: the thread trimmer comprises a fixed cutter (3) and a movable cutter capable of being meshed with the fixed cutter (3), the movable cutter is driven to move by a thread trimming driving source, the inductor (1) and the thread trimming driving source are connected with the electronic control module, and the thread trimming time is prestored in the electronic control module.
5. The shear line control mechanism of claim 4, wherein: the down time is a constant value.
6. The thread trimming control mechanism of claim 1, wherein: the inductor (1) is fixed on a sewing table panel (2) or a needle plate in the sewing machine.
7. A sewing machine characterized by: the sewing machine having installed therein the thread trimmer control mechanism of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384792.1A CN111197206A (en) | 2018-11-20 | 2018-11-20 | Thread cutting control mechanism and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384792.1A CN111197206A (en) | 2018-11-20 | 2018-11-20 | Thread cutting control mechanism and sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111197206A true CN111197206A (en) | 2020-05-26 |
Family
ID=70744195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811384792.1A Pending CN111197206A (en) | 2018-11-20 | 2018-11-20 | Thread cutting control mechanism and sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111197206A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1322267A (en) * | 1971-10-12 | 1973-07-04 | Burton P E | Method and apparatus for treating cut ends of cloth lengths |
| JPS5497139A (en) * | 1977-12-23 | 1979-08-01 | Brother Ind Ltd | Cutter device for sewing machine |
| JPS63109895A (en) * | 1986-10-28 | 1988-05-14 | ブラザー工業株式会社 | Automatic cutter of sewing machine |
| JPH01185288A (en) * | 1988-01-20 | 1989-07-24 | Brother Ind Ltd | Self diagnosis device for sewing machine |
| US4895088A (en) * | 1988-06-01 | 1990-01-23 | Clinton Industries, Inc. | Accurate cutter system for sewing machine |
| JPH0265899A (en) * | 1988-08-31 | 1990-03-06 | Juki Corp | Automatic thread cutter in sewing machine apparatus |
| JPH08336690A (en) * | 1995-06-14 | 1996-12-24 | Juki Corp | Automatic thread cutting device of sewing machine |
| CN103088560A (en) * | 2013-02-07 | 2013-05-08 | 新杰克缝纫机股份有限公司 | Overedger automatically-inductive sewing system and method |
| CN105386245A (en) * | 2015-12-29 | 2016-03-09 | 杰克缝纫机股份有限公司 | Sewing sensing device of sewing machine and sewing method |
| CN107090675A (en) * | 2017-07-04 | 2017-08-25 | 杰克缝纫机股份有限公司 | A kind of sewing machine automatic shearing control device and method |
| CN108823839A (en) * | 2018-06-12 | 2018-11-16 | 杰克缝纫机股份有限公司 | A kind of overseam trimming control method and structure |
| CN209211064U (en) * | 2018-11-20 | 2019-08-06 | 杰克缝纫机股份有限公司 | A kind of trimming control mechanism and sewing machine |
-
2018
- 2018-11-20 CN CN201811384792.1A patent/CN111197206A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1322267A (en) * | 1971-10-12 | 1973-07-04 | Burton P E | Method and apparatus for treating cut ends of cloth lengths |
| JPS5497139A (en) * | 1977-12-23 | 1979-08-01 | Brother Ind Ltd | Cutter device for sewing machine |
| JPS63109895A (en) * | 1986-10-28 | 1988-05-14 | ブラザー工業株式会社 | Automatic cutter of sewing machine |
| JPH01185288A (en) * | 1988-01-20 | 1989-07-24 | Brother Ind Ltd | Self diagnosis device for sewing machine |
| US4895088A (en) * | 1988-06-01 | 1990-01-23 | Clinton Industries, Inc. | Accurate cutter system for sewing machine |
| JPH0265899A (en) * | 1988-08-31 | 1990-03-06 | Juki Corp | Automatic thread cutter in sewing machine apparatus |
| JPH08336690A (en) * | 1995-06-14 | 1996-12-24 | Juki Corp | Automatic thread cutting device of sewing machine |
| CN103088560A (en) * | 2013-02-07 | 2013-05-08 | 新杰克缝纫机股份有限公司 | Overedger automatically-inductive sewing system and method |
| CN105386245A (en) * | 2015-12-29 | 2016-03-09 | 杰克缝纫机股份有限公司 | Sewing sensing device of sewing machine and sewing method |
| CN107090675A (en) * | 2017-07-04 | 2017-08-25 | 杰克缝纫机股份有限公司 | A kind of sewing machine automatic shearing control device and method |
| CN108823839A (en) * | 2018-06-12 | 2018-11-16 | 杰克缝纫机股份有限公司 | A kind of overseam trimming control method and structure |
| CN209211064U (en) * | 2018-11-20 | 2019-08-06 | 杰克缝纫机股份有限公司 | A kind of trimming control mechanism and sewing machine |
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| PB01 | Publication | ||
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Address after: 318010 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Applicant after: Jack Technology Co.,Ltd. Address before: 318010 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Applicant before: JACK SEWING MACHINE Co.,Ltd. |