CN106012362B - High-precision thread cutting device and method for embroidery machine - Google Patents
High-precision thread cutting device and method for embroidery machine Download PDFInfo
- Publication number
- CN106012362B CN106012362B CN201610611193.3A CN201610611193A CN106012362B CN 106012362 B CN106012362 B CN 106012362B CN 201610611193 A CN201610611193 A CN 201610611193A CN 106012362 B CN106012362 B CN 106012362B
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- thread
- hook
- embroidery machine
- hook knife
- thread cutting
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
- D05C11/20—Arrangements for cutting the needle or lower threads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a thread cutting device and a thread cutting method of an embroidery machine for cutting threads with high precision, wherein the thread cutting device comprises a hook knife driving device positioned on the upper side surface of a needle plate and a thread cutting device positioned on the lower side surface of the needle plate, the hook knife driving device comprises a hook knife motor, a position sensor and an eccentric wheel are respectively arranged on the periphery of a driving shaft of the hook knife motor, the eccentric wheel is connected with a swinging rod with a sliding groove at one end through a roller, a fixed shaft connected with a motor seat is arranged in the middle of the swinging rod, and the other end of the swinging rod is connected with a pull rod for driving the hook knife through a connecting rod. According to the invention, the accurate position of the hooking knife back is determined by the position sensor at the periphery of the driving shaft of the hooking knife motor, so that the high-precision control of the length of the sheared wire is realized, and the technical defect caused by the fluctuation of the rotating speed of the main shaft is avoided.
Description
Technical Field
The invention relates to a thread cutting device and a thread cutting method, in particular to a thread cutting device and a thread cutting method of an embroidery machine for cutting threads with high precision.
Background
At present, for the embroidery machine industry, embroidery products finish one graphic unit, upper threads and bottom threads below a cloth cover need to be cut when embroidery of another graphic unit is started, and as a plurality of embroidery product units need to be frequently cut, thread heads left by thread cutting are positioned below the cloth cover, and the length of the thread heads directly relates to the quality of the embroidery products and the upper thread cost. The existing thread cutting method is generally that one upper thread driven by a needle of a pattern knitting machine passes through a cloth cover to form two upper threads, the two upper threads wrap a bottom thread below the cloth cover through a rotating shuttle, after knotting is finished, one upper thread and the bottom thread are cut by scissors, the cut upper thread and the bottom thread form thread heads below the cloth cover, the scissors of the scissors cut threads have no control performance on the length of the thread heads, namely the thread heads can be long for a while and short for a while, and the main influencing factor of the length of the thread heads is the thread cutting length caused by the change of the time for starting the thread cutting of the scissors due to the fluctuation of the rotating speed of a main shaft.
Of course, in the existing thread trimming process, there are mechanical structures such as a hook knife, an upper thread clamping device and a thread buckling hook, but these mechanical structures do not control the thread trimming length, the hook knife mainly has the function of keeping the tension force of the upper thread and helping the upper thread to pull back, while the upper thread clamping device is used for fixing the upper thread in thread trimming, but the action time of the upper thread clamping device is also controlled by the rotation of the main shaft, the action of the thread buckling hook mainly branches two upper threads into loops, and at present, there is a method for trimming when the branches are separated from the thread buckling hook according to the branching loops, but the branching loops are separated from the thread buckling hook, so that the state is not easy to catch, and the uncertainty of the thread trimming length is caused. In addition, in the prior art, a hook knife motor and a swing rod of the hook knife are arranged on the side face of a cross beam of the embroidery machine, so that the swing direction of the swing rod is in the vertical direction, and a pull rod connected with the hook knife moves in the horizontal direction, and the pull rod lacks of front-back and up-down adjusting functions, namely the hook knife position or trimming length, of the pull rod. How to solve the technical problems of uncertain length and low accuracy of the cut wire is always the object of the study of the technicians in the field.
Disclosure of Invention
The invention provides a thread cutting device and a thread cutting method for an embroidery machine, which are capable of accurately controlling the thread cutting length and high-precision thread cutting.
The utility model provides an embroidery machine thread trimming device of high accuracy cut line, includes the sword drive arrangement that colludes that is located the faller upside and is located the thread trimming device of faller downside, the sword drive arrangement that colludes include collude the sword motor, collude sword motor drive shaft periphery and be equipped with position sensor and eccentric wheel respectively, the eccentric wheel passes through the pendulum rod that roller connection one end had the spout, is equipped with the fixed axle of connection motor cabinet in the middle of the pendulum rod, the pull rod that colludes the sword is passed through in the connecting rod connection drive to the pendulum rod other end. The thread cutting device of the embroidery machine determines the accurate position of the hooking knife back through the position sensor at the periphery of the driving shaft of the hooking knife motor, and realizes high-precision control of the thread cutting length. The hooking motor can also be a servo motor with high price, and other corresponding motors can be adopted.
As the structure, the hook knife motor is preferably arranged on the bottom surface of the cross beam of the embroidery machine, and the swinging rod horizontally swings, the installation mode greatly reduces the installation space occupying the side surface of the cross beam, and the swinging rod horizontally swings and the movement direction of the pull rod are positioned in the same horizontal direction, so that the movement control of the pull rod is facilitated.
The swing rod is connected with the connecting rod through a connecting block, a front adjusting groove and a rear adjusting groove are formed in the connecting block and are connected with the swing rod, an up-down adjusting pin is further arranged on the connecting block, and the up-down adjusting pin is matched with the connecting rod. The up-down adjusting pin and the front-back adjusting groove on the connecting block realize the adjustment of the up-down and front-back positions of the pull rod, namely the adjustment of the hook knife position, so that the accuracy of cutting wires is further improved.
The thread cutting device comprises a rotating shuttle with a bottom thread inside, thread buckling hooks and scissors are respectively arranged on the side edges of the rotating shuttle, the bottom thread in the rotating shuttle is cut and then placed on the bottom thread supporting frame, and the cut bottom thread is prevented from being disturbed for next use. The rotating shuttle is arranged on the shuttle box body, the bobbin thread supporting frame and the scissors mounting module are respectively arranged on the shuttle box body, the fixed knife and the movable knife are respectively arranged on the scissors mounting module, the movable knife is connected with the pull rod through the rotating shaft and the rotating shaft connecting rod, and the spring and the fixed bracket are sleeved on the pull rod; the wire buckling hook is driven to rotate by the electromagnet, and is arranged on the wire buckling hook installation module which is connected with the scissor installation module.
The embroidery machine needle drives one upper thread to pass through the cloth surface on the needle plate to form two upper threads, the two upper threads are separated through the shuttle point of the rotating shuttle and drive the upper thread to rotate to form a coil at the thread buckling hook, the upper thread on the right side of the thread buckling hook is pulled by the hook knife, the hook knife moves back to the pause position to determine the length of the two upper threads below the cloth surface, the thread shearing position of the scissors relative to the upper thread and the bottom thread is determined, and the thread shearing length is determined accurately. According to the thread cutting method, the upper thread is pulled back through the hook knife, the hook knife is pulled back to the stop position to determine the length of two upper threads below the cloth cover, and the position of a cut upper thread and a bottom thread relative to the scissors is fixed, so that the thread cutting length is accurately determined. The fluctuation of the spindle rotation speed of the thread cutting method has little influence on the length of the thread cutting.
The hook knife advancing and retreating starting signal is controlled by the rotating angle of the main shaft of the embroidery machine, and the hook knife backward stopping position is determined by a position sensor at the periphery of a hook knife motor driving shaft. In order to achieve the technical purpose of achieving various uniform trimming lengths under the condition that the trimming length is determined, the back stop position of the hook knife is divided into 1 to 8 positions, and eight trimming lengths are achieved.
In the thread cutting method, the action signals of the embroidery machine needle, the scissors, the hook knife and the thread buckling hook are controlled by the rotation angle of the main shaft of the embroidery machine, and the angle control is controlled relative to the traditional installation step control, so that the uniformity of the thread cutting length is ensured, and the technical defect caused by unstable main shaft rotation speed is avoided.
According to the invention, the accurate position of the hooking knife back is determined by the position sensor at the periphery of the driving shaft of the hooking knife motor, so that the high-precision control of the length of the sheared wire is realized, and the technical defect caused by the fluctuation of the rotating speed of the main shaft is avoided.
Drawings
FIG. 1 is a schematic perspective view of a thread cutting device of an embroidery machine for cutting threads with high precision according to the present invention;
FIG. 2 is a schematic diagram showing the structure of the wire cutting device according to the present invention;
FIG. 3 is a schematic diagram showing a three-dimensional structure of a hook driving device according to the present invention;
fig. 4 is a schematic structural diagram of the use state of the hook driving device according to the present invention.
Detailed Description
The thread cutting device of the embroidery machine for cutting threads with high precision as shown in fig. 1 to 4 comprises a hook knife driving device positioned on the upper side surface of a needle plate 7 and a thread cutting device positioned on the lower side surface of the needle plate, wherein the hook knife driving device comprises a hook knife motor 16, a position sensor 17 and an eccentric wheel 22 are respectively arranged on the periphery of a driving shaft of the hook knife motor 16, the eccentric wheel 22 is connected with a swinging rod 18 with a sliding groove at one end through a roller, a fixed shaft 23 connected with a motor seat is arranged in the middle of the swinging rod 18, and the other end of the swinging rod 18 is connected with a pull rod for driving the hook knife 1 through a connecting rod 19. The hooking motor 16 is arranged on the bottom surface of the cross beam of the embroidery machine, and the swinging rod 18 swings horizontally. The preferable technical structure is that the swing rod 18 is connected with the connecting rod 19 through a connecting block 20, a front-back adjusting groove is arranged on the connecting block 20 and is connected with the swing rod 18, an up-down adjusting pin 21 is also arranged on the connecting block 20, and the up-down adjusting pin 21 is matched and connected with the connecting rod 19. The connecting rod 19 is connected with a pull rod for controlling the hook knife 1, so that the adjustment of the upper, lower, front and rear positions of the pull rod is realized, and the adjustment of the upper, lower, front and rear positions of the hook knife 1 is also realized.
The thread cutting device comprises a rotating shuttle 6 with a bottom thread inside, thread buckling hooks 5 and scissors are respectively arranged on the side edges of the rotating shuttle 6, and the bottom thread in the rotating shuttle 6 is cut and then placed on a bottom thread supporting frame 14. The rotating shuttle 6 is arranged on the shuttle box body 15, the bobbin thread supporting frame 8 and the scissors mounting module 13 are respectively arranged on the shuttle box body 15, the fixed blades 3 and the movable blades 4 are respectively arranged on the scissors mounting module 13, the movable blades 4 are connected with the scissors pull rod 11 through the rotating shaft 10 and the rotating shaft connecting rod 9, the scissors pull rod 11 is sleeved with the spring and the fixed support 12, and the scissors are opened and closed under the control of the scissors pull rod 11. The installation mode of the scissors installation module greatly improves the installation efficiency and reduces the installation space.
As a further technical structure, the wire buckling hook 5 is driven to rotate through an electromagnet and is arranged on the wire buckling hook installation module, the wire buckling hook installation module 8 is connected with the scissors installation module 13, the installation efficiency is further improved, and the installation space is reduced.
The embroidery machine thread cutting method with high precision thread cutting comprises that an embroidery machine needle 2 drives an upper thread to pass through a cloth cover on a needle plate to form two upper threads, the two upper threads are separated through a shuttle point of a rotating shuttle 6 and drive the upper thread to rotate at a thread buckling hook 5 to form a coil, the upper thread on the right side of the thread buckling hook 5 is pulled by a hook knife 1, the hook knife 1 moves back to a pause position to determine the lengths of the two upper threads below the cloth cover, the thread cutting position of scissors relative to the upper thread and a bottom thread is determined, and the thread cutting length is accurately determined.
The forward and backward starting signal of the hook knife 1 is controlled by the rotation angle of the main shaft of the embroidery machine, the backward stop position of the hook knife is determined by a position sensor 17 at the periphery of the driving shaft of the hook knife motor, and the position precision of the hook knife is further improved, namely the thread cutting precision is improved. The length of two upper threads below the cloth cover is determined by the position of the upper thread which is pulled to be retracted by the hook knife 1, the hook knife stops after being retracted in place, and then the upper thread is clamped by the upper thread clamping mechanism of the embroidery machine, so that the upper thread position is fixed, and the upper thread clamping mechanism of the embroidery machine is realized by adopting the traditional clamping mechanism. In order to realize that the positions of the hooking knives 1 which are retracted in various cutting lengths are divided into 1 to 8 positions, eight cutting lengths are realized. As a specific implementation, 8 hook positions are realized by means of 1 to 8 position sensors 17. Of course, the number of hook knife positions can be set as required.
As a further technical method, the action signals of the embroidery machine needle, the scissors, the hook knife and the thread-buckling hook in the thread-cutting method are controlled by the rotation angle of the main shaft of the embroidery machine.
Claims (6)
1. The utility model provides an embroidery machine thread cutting device of high accuracy cut line, includes the sword drive arrangement that colludes that is located faller upside and is located the thread cutting device of faller downside, its characterized in that: the hook knife driving device comprises a hook knife motor, a position sensor and an eccentric wheel are respectively arranged on the periphery of a driving shaft of the hook knife motor, the eccentric wheel is connected with a swing rod with a chute at one end through a roller, a fixed shaft connected with a motor seat is arranged in the middle of the swing rod, and the other end of the swing rod is connected with a pull rod for driving the hook knife through a connecting rod; the swing rod is connected with the connecting rod through a connecting block, a front adjusting groove and a rear adjusting groove are formed in the connecting block and are connected with the swing rod, an upper adjusting pin and a lower adjusting pin are further arranged on the connecting block, and the upper adjusting pin and the lower adjusting pin are matched with the connecting rod; the hook knife advancing and retreating starting signal is controlled by the rotating angle of the main shaft of the embroidery machine, and the hook knife backward stopping position is determined by a position sensor at the periphery of a hook knife motor driving shaft.
2. The thread cutting device of the embroidery machine for cutting threads with high precision according to claim 1, wherein: the hooking motor is arranged on the bottom surface of the cross beam of the embroidery machine, and the swing rod horizontally swings.
3. The thread cutting device of the embroidery machine for cutting threads with high precision according to claim 1, wherein: the thread cutting device comprises a rotating shuttle with a bottom thread inside, thread buckling hooks and scissors are respectively arranged on the side edges of the rotating shuttle, and the bottom thread inside the rotating shuttle is cut and then placed on the bottom thread supporting frame.
4. The thread cutting device for an embroidery machine for cutting threads with high precision according to claim 3, wherein: the rotating shuttle is arranged on the shuttle box body, the bobbin thread supporting frame and the scissors mounting module are respectively arranged on the shuttle box body, the fixed cutters and the movable cutters are respectively arranged on the scissors mounting module, the movable cutters are connected with the pull rod through the rotating shaft and the rotating shaft connecting rod, and the spring and the fixed support are sleeved on the pull rod; the wire buckling hook is driven to rotate by the electromagnet, and is arranged on the wire buckling hook installation module which is connected with the scissor installation module.
5. The thread trimming method of the embroidery machine for trimming threads with high precision according to claim 1, wherein the embroidery machine needle drives one upper thread to pass through the cloth cover on the needle plate to form two upper threads, the two upper threads are separated through the shuttle point of the rotating shuttle and drive the upper thread to rotate at the thread-buckling hook to form a coil, the upper thread on the right side of the thread-buckling hook is pulled by the hook knife, the hook knife returns to a stop position to determine the lengths of the two upper threads below the cloth cover, the thread trimming position of the scissors relative to one upper thread and the bottom thread is determined, and the trimming length is precisely determined.
6. The thread cutting method of the embroidery machine for cutting threads with high precision according to claim 5, wherein: in the thread cutting method, the action signals of the embroidery machine needle, the scissors, the hook knife and the thread buckling hook are controlled by the rotation angle of the main shaft of the embroidery machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610611193.3A CN106012362B (en) | 2016-07-24 | 2016-07-24 | High-precision thread cutting device and method for embroidery machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610611193.3A CN106012362B (en) | 2016-07-24 | 2016-07-24 | High-precision thread cutting device and method for embroidery machine |
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| Publication Number | Publication Date |
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| CN106012362A CN106012362A (en) | 2016-10-12 |
| CN106012362B true CN106012362B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610611193.3A Active CN106012362B (en) | 2016-07-24 | 2016-07-24 | High-precision thread cutting device and method for embroidery machine |
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| CN106868740B (en) * | 2016-11-07 | 2019-11-15 | 浙江越隆缝制设备有限公司 | Embroidery machine bilateral pendulum-type hooking pull rod device |
| CN108342847B (en) * | 2017-01-23 | 2020-08-04 | 北京大豪科技股份有限公司 | Control method and system for thread cutting process of embroidery machine |
| CN108505235B (en) * | 2017-02-28 | 2020-07-03 | 北京大豪科技股份有限公司 | Thread cutting method and device of rope embroidery device |
| CN107326561B (en) * | 2017-08-28 | 2022-12-27 | 江西禾丰电子机械有限公司 | Thread-buckling device of embroidery machine |
| CN109972312A (en) * | 2019-04-27 | 2019-07-05 | 东莞市宝轮电脑刺绣机械有限公司 | A kind of portable structure single head plain embroidery embroidery machine |
| CN111074444B (en) * | 2020-02-18 | 2021-08-27 | 陈天龙 | Thread trimming control method and device capable of controlling length of thread end of embroidery machine surface thread |
| CN113846442B (en) * | 2021-11-15 | 2022-07-29 | 诸暨远景机电有限公司 | Thread cutting method of embroidery machine |
| CN114672933A (en) * | 2022-03-23 | 2022-06-28 | 宁波双玉机电制造有限公司 | Quilting, embroidering and trimming integrated device and quilting, embroidering and trimming integrated machine adopting same |
| CN116103852B (en) * | 2023-03-09 | 2024-05-24 | 浙江镨美科智能刺绣设备有限公司 | Thread cutting method of embroidery machine |
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