CN101929032A - Full closed-loop electronic letting-off device - Google Patents
Full closed-loop electronic letting-off device Download PDFInfo
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- CN101929032A CN101929032A CN2010102419030A CN201010241903A CN101929032A CN 101929032 A CN101929032 A CN 101929032A CN 2010102419030 A CN2010102419030 A CN 2010102419030A CN 201010241903 A CN201010241903 A CN 201010241903A CN 101929032 A CN101929032 A CN 101929032A
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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 the 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 people's wage adjustment warp run-in, and shortcomings such as the fabrics cloth cover uniformity is poor, speed is slow, easily broken yarn, noise be big, 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, main rely on input through the axle parameter, wait the theoretical outer perimeter that calculates through axle as outer perimeter, interior girth, the number of turns, by progressively improving the influence that outer perimeter diminishes and brings after the rotating speed of axle remedies yarn consumption, thereby reach the purpose of constant warp run-in.But, owing to data computing is subject to warping tension force reason, the measure error reason, parameter update reason, warping condition, the user uses the influence of many reasons such as raw material, substantially can't realize accurate Calculation, differing that error amount has can reach more than the 5%-10%, thereby the error that causes system's warp run-in is also more than 5%-10%, thereby easily cause faults such as device damage, knitting needle rupture, fabric is scrapped, can not satisfy the 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 functions such as error quantization adjustment, automatic Compensation Regulation, so can not realize and satisfied modernization high speed, high-precision requirement.
Summary of the invention
The objective of the invention is the deficiency at 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 signal termination computer control system corresponding input end of described main shaft signal generator, one group of input/output terminal of computer control system links to each other with servo controller, and servo controller links to each other with servomotor; Described servomotor by transmission mechanism with link to each other through axle; Described on-line measuring device comprises support section and test section, and described its test section acts on the coiled hair yam surface, and its detection signal output links to each other with the computer corresponding input end.
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; Flexibly connect by bearing block between described fulcrum and the last item, and the flexible member two ends act on fulcrum and last item respectively; Described rotating shaft links to each other by the bearing socket with axle sleeve and leaves surplus respectively at the axle sleeve two ends, and described two pinch rollers are separately fixed at the residue position at rotating shaft two ends, and described axle sleeve and last item circumferentially flexibly connect; The signal output part of described sensor links to each other with the input of computer control system.
In the present embodiment, the preferred torsion spring of flexible member; Transmission mechanism then is made of reductor and synchronous band.
Concrete operation principle of the present invention is: set warp let-off parameter, by the rotating speed of computer control system to servo controller output signal control servomotor, detect the actual yarn length that send of coiled hair yarn by on-line measuring device, feeding back then makes comparisons in computer and with the warp let-off length of yarn of theory setting draws the numerical compensation warp run-in, thereby back control servomotor reaches the full cut-off ring control purpose of constant warp run-in.On-line measuring device design described in the native system is small and exquisite, is not subjected to spatial constraints, and can be according to being provided with arbitrarily through number of axle amount and needs; Native system can be measured the actual warp let-off length of machine and realize compensation automatically, and the warp let-off is stable, precision is high; Native system is when the inaccurate or error through the axle parameter of user input is excessive, and system also can report to the police or shut down automatically, and can pass through man-machine interface intelligent display reference value, and the prompting user is through the corrected parameter of axle, and is easy to operate, reliably, and safety.
Description of drawings
Fig. 1 is an operation principle block diagram of the present invention
Fig. 2 is an operation principle structural representation of the present invention.
Fig. 3 is the structural representation of on-line measuring device among the present invention.
Fig. 4 is a general assembly structural representation of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
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; Detect the spindle operation situations and insert the input of computer control system 10 as the signal of telecommunication by main shaft signal generator 9, computer control system 10 calculates through axle 3 operational factors according to the parameters of main shaft and input and is transferred to servo controller 11,1 running of servo controller 11 control servomotors; And servomotor 1 drives through axle 3 operations by transmission mechanism 12; 5 of on-line measuring devices detect actually in the coiled hair 4 puts yarn length and as feedback signal input computer control system 10; Computer control system 10 is made comparisons according to feedback signal and theory setting value and is drawn the numerical compensation amount, acts on servo controller 11 then.As Fig. 2, shown in Figure 4: transmission mechanism comprises reducing gear and band synchronously, coiled hair is installed on axle is used for depositing of yarn, and yarn is then drawn by the last sley point that inserts such as lever jack, tension piece by coiled hair when weaving cotton cloth; 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 the test section then acts on the 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; The test section comprises rotating shaft 52, axle sleeve 53, two pinch roller 51 and sensors; Flexibly connect by bearing block 58 between fulcrum 55 and the last item 54, and torsion spring 56 is socketed on the fulcrum 55 and by clamp ring the one end is fixed the elastic force that also can regulate torsion spring by the fixed position of clamp ring, its other end then acts on and is fixed on the last item 54; 53 on rotating shaft 52 and axle sleeve link to each other by bearing 57 sockets, and described rotating shaft 52 is longer than axle sleeve 53 and is left surplus respectively at axle sleeve 53 two ends, 51 residue positions that are separately fixed at rotating shaft 52 two ends of two pinch rollers; Axle sleeve 53 circumferentially flexibly connects with last item 54, can guarantee all the time that two pinch rollers 51 are close to the coiled hair yam surface; Sensor is selected DK type pulse transducer for use in the present embodiment, and the DK device can produce 1 or 5 pulse/rotations, and generation and receiving terminal can be installed on pinch roller and the axle sleeve respectively; According to the precision needs, also can select photoelectric sensor etc., and the signal output part of sensor links to each other with the input of computer control system.The reality that the pulse signal quantity that provides according to sensor when the present invention moves and the outer electrical path length of pinch roller can calculate the coiled hair yarn is length high-volume.
The present invention is simple in structure, and warp run-in is adjusted automatically, and is accurate, stable; Intelligent control, computation, convenient subjective, satisfy modernization high speed, high-precision production requirement fully.
Claims (3)
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 signal termination computer control system corresponding input end of described main shaft signal generator, one group of input/output terminal of computer control system links to each other with servo controller, and servo controller links to each other with servomotor; Described servomotor by transmission mechanism with link to each other through axle; Described on-line measuring device comprises support section and test section, and described its test section acts on the coiled hair yam surface, and its detection signal output links to each other with the computer corresponding input end.
2. full closed-loop electronic letting-off device according to claim 1 is characterized in that: 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; Flexibly connect by bearing block between described fulcrum and the last item, and the flexible member two ends act on fulcrum and last item respectively; Described rotating shaft links to each other by the bearing socket with axle sleeve and leaves surplus respectively at the axle sleeve two ends, and described two pinch rollers are separately fixed at the residue position at rotating shaft two ends, and described axle sleeve and last item circumferentially flexibly connect; The signal output part of described sensor links to each other with the input of computer control system.
3. full closed-loop electronic letting-off device according to claim 2 is characterized in that: described fulcrum, the angled design of last item, described flexible member is a 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 |
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| 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 true CN101929032A (en) | 2010-12-29 |
| CN101929032B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (9)
| 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 |
| DE2351431A1 (en) * | 1972-10-12 | 1974-04-25 | Colman Cocker Co | METHOD AND DEVICE FOR THE CONTROL OF THE YARN FEED IN CHAIN MAKING MACHINES |
| JPS5160755A (en) * | 1974-11-25 | 1976-05-26 | Mamoru Rindo | Tateamikino itookuridashijidochosetsusochi |
| JPS5658044A (en) * | 1979-09-28 | 1981-05-20 | Liba Maschf | Yarn sending control for warp beam knitting machine |
| 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 |
-
2010
- 2010-08-02 CN CN201010241903.0A patent/CN101929032B/en active Active
Patent Citations (9)
| 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 |
| DE2351431A1 (en) * | 1972-10-12 | 1974-04-25 | Colman Cocker Co | METHOD AND DEVICE FOR THE CONTROL OF THE YARN FEED IN CHAIN MAKING MACHINES |
| JPS5160755A (en) * | 1974-11-25 | 1976-05-26 | Mamoru Rindo | Tateamikino itookuridashijidochosetsusochi |
| JPS5658044A (en) * | 1979-09-28 | 1981-05-20 | Liba Maschf | Yarn sending control for warp beam knitting machine |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Publication date |
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| CN101929032B (en) | 2014-09-24 |
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