CN101929032B - Full closed-loop electronic letting-off device - Google Patents
Full closed-loop electronic letting-off device Download PDFInfo
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- CN101929032B CN101929032B CN201010241903.0A CN201010241903A CN101929032B CN 101929032 B CN101929032 B CN 101929032B CN 201010241903 A CN201010241903 A CN 201010241903A CN 101929032 B CN101929032 B CN 101929032B
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Abstract
The invention relates to an electronic control system, in particular to a full closed-loop electronic control system applied to a letting-off system of a warp knitting machine. The full closed-loop electronic control system comprises a main shaft signal generator, a computer control system, a servo controller, a servo motor and an on-line detection device; the signal end of the main shaft signal generator is connected with the corresponding input end of the computer control system, and the input/output end of the computer control system is connected with the servo controller; the servo motor is connected with a warp beam through a transmission mechanism; and the on-line detection device comprises a support part and a detection part, wherein the detection part of the on-line detection device is acted on the surface of a pan head yarn, and the detection signal output end of the on-line detection device is connected with the corresponding input end of the computer. The full closed-loop electronic control system has the advantages of simple structure, automatic adjustment of letting-off amount, accuracy, stability, intelligent control, computer operation, convenience, subjectivity and capability of fully meeting modern high-speed and high-precision production requirement.
Description
Technical field
The present invention relates to a kind of electronic control system, is a kind of full closed-loop electronic control system that applies to warp knitting machine feeding system of warp specifically.
Background technology
At present, the warp let-off control system of domestic warp knitting machine is mainly mechanical warp let-off control system and EBA electronic let-off control system, yet this mechanical type warp-feeding mechanism exists mechanical complicated maintenance operation very inconvenient, frequently will be by artificial tune warp run-in, and the shortcomings such as the fabrics cloth cover uniformity is poor, speed is slow, easily broken yarn, noise be large, belong to low-and-medium-grade products, can not adapt to the high-quality requirement of modern industry far away.And existing EBA electronic let-off control system is open cycle system substantially, the main warp beam parameter that relies on input, as outer perimeter, interior girth, the number of turns etc. are calculated the theoretical outer perimeter of warp beam, by progressively improving the rotating speed of warp beam, make up the impact that outer perimeter diminishes and brings after yarn consumption, thereby reach the object of constant warp run-in.But, because the calculating of data is subject to tension in Warping reason, measure error reason, parameter is upgraded reason, warping condition, user uses the impact of many reasons such as raw material, substantially cannot realize accurate Calculation, error amount has differ and can reach 5%-10% more than, thereby cause the error of system warp run-in also more than 5%-10%, thereby easily cause the faults such as device damage, knitting needle rupture, fabric is scrapped, can not meet middle and high-end market demand; Also have some modified let-off motions both at home and abroad, adopt machinery to adjust yarn tension, electronics electric shock switch FEEDBACK CONTROL machine switch, but these all can not realize the functions such as error quantization adjustment, auto-compensation adjusting, therefore can not realize and meet modernization high speed, high-precision requirement.
Summary of the invention
The object of the invention is the deficiency for existing warp knitting machine warp let-off control system, provide a kind of noise little, possess good high speed performance, the warp let-off is accurate, stable, the full closed-loop electronic letting-off device of automatic control.
For achieving the above object, technical scheme of the present invention is: a kind of full closed-loop electronic letting-off device, comprises main shaft signal generator, computer control system, servo controller, servomotor, on-line measuring device; The input corresponding to signal termination computer control system of described main shaft signal generator, one group of input/output terminal of computer control system is connected with servo controller, and servo controller is connected with servomotor; Described servomotor is connected with warp beam by transmission mechanism; Described on-line measuring device comprises support section and test section, and described its test section acts on coiled hair yam surface, and its detection signal output input corresponding with computer is connected.
As the preferred embodiments of the present invention: the support section of described on-line measuring device comprises: fulcrum, last item and flexible member; The test section of described on-line measuring device comprises rotating shaft, axle sleeve, two pinch rollers and sensor; Between described fulcrum and last item, by bearing block, be flexibly connected, and flexible member two ends act on respectively fulcrum and last item; Described rotating shaft is socketed and is connected and leaves respectively surplus at axle sleeve two ends by bearing with axle sleeve, and described two pinch rollers are separately fixed at the residue position at rotating shaft two ends, and described axle sleeve is circumferentially flexibly connected with last item; The signal output part of described sensor is connected with the input of computer control system.
In the present embodiment, the preferred torsion spring of flexible member; Transmission mechanism consists of reductor and Timing Belt.
Specific works principle of the present invention is: set warp let-off parameter, by computer control system, to servo controller output signal, control the rotating speed of servomotor, by on-line measuring device, detect the actual yarn length that send of coiled hair yarn, then feed back in computer and with the warp let-off length of yarn of theory setting and make comparisons and draw numerical compensation warp run-in, thereby rear control servomotor reaches the closed-loop of constant warp run-in, control object.On-line measuring device design described in native system is small and exquisite, is not subject to spatial limitation, and can be according to arranging arbitrarily with needing through the number of axle; Native system can monitoring actual warp let-off length and realize auto-compensation, the warp let-off is stable, precision is high; Native system is when the warp beam parameter of user input is inaccurate or error is excessive, and system also can automatic alarm or shutdown, and can pass through man-machine interface intelligent display reference value, and the corrected parameter of prompting user warp beam is easy to operate, reliably, and safety.
Accompanying drawing explanation
Fig. 1 is operation principle block diagram of the present invention
Fig. 2 is operation principle structural representation of the present invention.
Fig. 3 is the structural representation of on-line measuring device in the present invention.
Fig. 4 is general assembly structural representation of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiment: as shown in Figure 1: the present invention relates to a kind of full closed-loop electronic letting-off device, comprise main shaft signal generator 9, computer control system 10, servo controller 11, servomotor 1, on-line measuring device 5; By main shaft signal generator 9, detect spindle operation situations and as the input of signal of telecommunication access computer control system 10, computer control system 10 calculates warp beam 3 operational factors according to the parameters of main shaft and input and is transferred to servo controller 11, and servo controller 11 is controlled servomotor 1 running; And servomotor 1 drives warp beam 3 operations by transmission mechanism 12; 5 of on-line measuring devices detect actually in coiled hairs 4 puts yarn length and as feedback signal input computer control system 10; Computer control system 10 is made comparisons and is drawn and numerical compensation amount then act on servo controller 11 according to feedback signal and theory setting value.As shown in Figure 2, Figure 4 shows: transmission mechanism comprises reducing gear and Timing Belt, coiled hair is installed for the depositing of yarn in warp beam, while weaving cotton cloth, yarn is drawn by the last access such as lever jack, tension piece sley point by coiled hair; 5 of on-line measuring devices comprise support section and test section, and support section is put forth effort on wallboard and is fixed, and test section acts on coiled hair yam surface.
As shown in Figure 3: the support section of on-line measuring device comprises: fulcrum 55, last item 54 and torsion spring 56; Test section comprises rotating shaft 52, axle sleeve 53, two pinch roller 51 and sensors; Between fulcrum 55 and last item 54, by bearing block 58, be flexibly connected, and torsion spring 56 is socketed on fulcrum 55 and the elastic force of its one end is fixing by clamp ring and fixed position adjusting torsion spring that can be by clamp ring, its other end acts on and is fixed on last item 54; Rotating shaft 52 is connected by bearing 57 sockets with 53, axle sleeve, and described rotating shaft 52 is longer than axle sleeve 53 and is left respectively surplus at axle sleeve 53 two ends, two 51 of the pinch rollers residue positions that are separately fixed at rotating shaft 52 two ends; Axle sleeve 53 is circumferentially flexibly connected with last item 54, can guarantee all the time that two pinch rollers 51 are close to coiled hair yam surface; In the present embodiment, sensor is selected DK type pulse transducer, and DK device can produce 1 or 5 pulses/rotation, occurs and receiving terminal can be arranged on respectively on pinch roller and axle sleeve; According to precision needs, also can select photoelectric sensor etc., and the signal output part of sensor and the input of computer control system are connected.The reality that the pulse signal quantity providing according to sensor when the present invention moves and the outer electrical path length of pinch roller can calculate coiled hair yarn is length high-volume.
The present invention is simple in structure, and warp run-in is adjusted automatically, accurate, stable; Intelligent control, computation, convenient subjective, meet modernization high speed, high-precision production requirement completely.
Claims (2)
1. a full closed-loop electronic letting-off device, is characterized in that: comprise main shaft signal generator, computer control system, servo controller, servomotor, on-line measuring device; The input corresponding to signal termination computer control system of described main shaft signal generator, one group of input/output terminal of computer control system is connected with servo controller, and servo controller is connected with servomotor; Described servomotor is connected with warp beam by transmission mechanism; Described on-line measuring device comprises support section and test section, and described its test section acts on coiled hair yam surface, and its detection signal output input corresponding with computer is connected; Described transmission mechanism consists of reductor and Timing Belt;
The support section of described on-line measuring device comprises: fulcrum, last item and flexible member; The test section of described on-line measuring device comprises rotating shaft, axle sleeve, two pinch rollers and sensor; Between described fulcrum and last item, by bearing block, be flexibly connected, and flexible member two ends act on respectively fulcrum and last item; Described rotating shaft is socketed and is connected and leaves respectively surplus at axle sleeve two ends by bearing with axle sleeve, and described two pinch rollers are separately fixed at the residue position at rotating shaft two ends, and described axle sleeve is circumferentially flexibly connected with last item; The signal output part of described sensor is connected with the input of computer control system.
2. full closed-loop electronic letting-off device according to claim 1, is characterized in that: described fulcrum, the angled design of last item, described flexible member is torsion spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010241903.0A CN101929032B (en) | 2010-08-02 | 2010-08-02 | Full closed-loop electronic letting-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010241903.0A CN101929032B (en) | 2010-08-02 | 2010-08-02 | Full closed-loop electronic letting-off device |
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| Publication Number | Publication Date |
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| CN101929032A CN101929032A (en) | 2010-12-29 |
| CN101929032B true CN101929032B (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010241903.0A Active CN101929032B (en) | 2010-08-02 | 2010-08-02 | Full closed-loop electronic letting-off device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104846518A (en) * | 2015-04-08 | 2015-08-19 | 杭州创兴织造设备科技有限公司 | Quantitive yarn feeding device and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5524461A (en) * | 1995-04-24 | 1996-06-11 | Techno-Craft, Inc. | Control system for yarn feed gearbox |
| CN1584166A (en) * | 2004-05-24 | 2005-02-23 | 江南大学 | Mechanical length fixed warp feeding method for spaced weaving machine |
| CN1827886A (en) * | 2006-04-13 | 2006-09-06 | 康盘方 | Electronic warp feeding system of warp knitting machine |
| CN101487165A (en) * | 2009-02-25 | 2009-07-22 | 常州市第八纺织机械有限公司 | Warp let-off speed-measuring feedback device of multi-axial warp knitting machine |
| CN201785598U (en) * | 2010-08-02 | 2011-04-06 | 常州市中迈源纺织机械有限公司 | Whole-closed-loop electronic let-off device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1134818A (en) * | 1966-11-17 | 1968-11-27 | Platt Knitting Machinery Ltd | Improvements on warp knitting machines |
| FR2203389A5 (en) * | 1972-10-12 | 1974-05-10 | Colman Cocker Cy | Warp knitting yarn feed control - by comparison of signals from impulse gener-ators at main drive and warp beam motors |
| JPS5160755A (en) * | 1974-11-25 | 1976-05-26 | Mamoru Rindo | Tateamikino itookuridashijidochosetsusochi |
| DE2939312C2 (en) * | 1979-09-28 | 1984-01-05 | Liba Maschinenfabrik Gmbh, 8674 Naila | Thread feed for warp knitting machines |
-
2010
- 2010-08-02 CN CN201010241903.0A patent/CN101929032B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5524461A (en) * | 1995-04-24 | 1996-06-11 | Techno-Craft, Inc. | Control system for yarn feed gearbox |
| CN1584166A (en) * | 2004-05-24 | 2005-02-23 | 江南大学 | Mechanical length fixed warp feeding method for spaced weaving machine |
| CN1827886A (en) * | 2006-04-13 | 2006-09-06 | 康盘方 | Electronic warp feeding system of warp knitting machine |
| CN101487165A (en) * | 2009-02-25 | 2009-07-22 | 常州市第八纺织机械有限公司 | Warp let-off speed-measuring feedback device of multi-axial warp knitting machine |
| CN201785598U (en) * | 2010-08-02 | 2011-04-06 | 常州市中迈源纺织机械有限公司 | Whole-closed-loop electronic let-off device |
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| CN101929032A (en) | 2010-12-29 |
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