CN102505292B - Active motor-driven back rest based method for controlling dynamic tension of warps on loom - Google Patents
Active motor-driven back rest based method for controlling dynamic tension of warps on loom Download PDFInfo
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- CN102505292B CN102505292B CN2011103188822A CN201110318882A CN102505292B CN 102505292 B CN102505292 B CN 102505292B CN 2011103188822 A CN2011103188822 A CN 2011103188822A CN 201110318882 A CN201110318882 A CN 201110318882A CN 102505292 B CN102505292 B CN 102505292B
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Abstract
The invention relates to an active motor-driven back rest based method for controlling dynamic tension of warps on a loom. The method comprises the following steps of: (1) manufacturing a cam type motor-driven back rest with a cam contour; and (2) carrying out rotation adjustment on the cam type motor-driven back rest by a driving device to change the paths of the warps, controlling the warp tension to be maintained in the error range allowed by the system and further ensuring high-speed and normal operation of the loom. The method has the following beneficial effect: the cam type motor-driven back rest with smaller moment of inertia is slightly rotated to realize control of the dynamic tension of the whole warps on the loom.
Description
Technical field
The present invention relates to the control technology field of warp yarns dynamic tension, particularly relate to a kind of dynamic tension of warp on loom based on active electronic back rest control method.
Background technology
In the loom course of work, warp yarns tension force is extremely important and must a consider technological parameter, and the balance and stability of tension force is directly connected to quality and the production efficiency of product, is also the assurance of loom energy high-speed stable running.Therefore when weaving machine high-speed is worked,, to accurate measurement and the control of warp yarns tension force on loom, seem particularly important.
At present, the adjusting of warp on loom yarn tension and control method be by the warp let-off and batch and the mobile back rest, and wherein the warp let-off and the mobile back rest are main.Electronic warp feeding is generally adopted in the warp let-off of a new generation's high-speed weaving machine, has greatly improved stability and the control accuracy of warp tension.But because the yarn inertia of warp beam and coiling thereof is larger, the yarn tension control performance of electronic let-off control system is difficult to meet the dynamic tension control requirement of yarn, so the control target of electronic let-off control system is only the stable control of the mean tension of yarn.Secondly, existing mobile after beam action have two: the one, the elongated compensation of yarn track that opening is caused, in order to avoid opening yarn transient state overtension; The 2nd,, by spring and tension pick-up, realize detection and the compensation of transient state tension force.Because the mobile back rest causes the elongated compensating action of yarn track to opening, in case fix after setting, and the spring in back rest belongs to open loop to the compensation of transient state tension force, therefore as a whole, the existing mobile back rest all belongs to passive type to the control action of yarn dynamic tension, does not have online self-regulation and control action to the dynamic tension of warp thread.Also there is at present pair back rest to add hydraulic damping mechanism, magnetic fluid damping mechanism and programmable movement back rest mechanism, but to be all regulating action to yarn tension all belong to open loop, passive type for they, do not have the on-line automatic regulatory function of warp yarns power tension force.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of dynamic tension of warp on loom based on active electronic back rest control method, realizes that the dynamic tension of the whole yarn of loom is controlled.
The technical solution adopted for the present invention to solve the technical problems is: a kind of dynamic tension of warp on loom based on active electronic back rest control method is provided, comprises the following steps:
(1) produce the Cam-type electric back rest with cam contour;
(2) by drive unit, the Cam-type electric back rest is rotated adjustment, changes the track of warp yarns, control yarn tension and maintain in the error range that system allows, guarantee weaving machine high-speed, normal operation.
Further comprising the steps of between described step (1) and step (2):
(A) yarn tension data value measured on the Cam-type electric back rest and system preset value being made difference relatively calculates;
(B) after difference is relatively calculated, the data of gained are used for controlling the drive unit of the Cam-type electric back rest as control signal.
The Cam-type electric back rest described in described step (1) is that the position mounted motor by the one or both ends at the cam-type back rest obtains.
In described step (2), the yarn tension data value detects and obtains by the tension force detecting sensor.
Beneficial effect
Owing to having adopted above-mentioned technical scheme, the present invention compared with prior art, have following advantage and good effect: the electronic back rest of the present invention belongs to active, by controlling the anglec of rotation of the cam back rest, can on-line control and control warp yarns tension force, so the control accuracy of yarn tension is greatly improved; Compare with warp beam, it is little that the back rest has a rotary inertia, and the characteristics that numerical value is fixing, and by improvement, design such as adopting the hollow back rest, the inertia of the back rest is expected to reduce closely to 1～2 order of magnitude than the minimum inertia of warp beam, therefore the control sensitivity of weaving machine yarns dynamic tension will be greatly enhanced, and make the dynamic control of yarn tension become possibility, will be the breakthrough of the control of present weaving machine yarns mean tension; The back rest both can replace original mobile back rest, also can be used as an independently back rest (seeing Fig. 4), so both had been conducive to designs simplification, transformation and the upgrading of existing loom, also was conducive to new loom development, was convenient to this Technique Popularizing; Formed the Newly control mode of loom---partial-tension control technology pattern, namely electronic let-off control system is controlled the mean tension of yarn, and the active electronic back rest is used for the dynamic tension of the yarn of controlling.The control model of this partial-tension, will be conducive to the development of each module, and the modularization that also is conducive to system is integrated, for specialized technical research and the development of loom provides technical foundation.
Description of drawings
Fig. 1 is single motor powered back beam structure schematic diagram of the present invention;
Fig. 2 is dual-motor electric back beam structure schematic diagram of the present invention;
Fig. 3 is based on the yarn tension control block diagram of the electronic back rest;
Fig. 4 is with the loom let-off of the electronic back rest and coiling system schematic diagram.
The specific embodiment
, below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only are not used in and limit the scope of the invention for explanation the present invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiments of the present invention relate to a kind of dynamic tension of warp on loom based on active electronic back rest control method, at first, adopt the cam-type back rest with cam contour.Secondly, in the position of the one or both ends of the cam-type back rest, place motor and magnetic powder brake drive unit, form the Cam-type electric back rest.Change finally the track of warp yarns by the anglec of rotation of controlling this back rest, thereby realize the control action to the tension force of yarn.The method principle is:, by the less Cam-type electric back rest of small rotation rotary inertia, realize that the dynamic tension of the whole yarn of loom is controlled, its concrete steps are as follows.
(1) produce the Cam-type electric back rest with cam contour.This Cam-type electric back rest can comprise the cam-type back rest 1 as shown in Figure 1, and the described cam-type back rest 1 one ends are connected with the first motor 2 by connecting axle 3.Described the first motor 2 is connected with control system; Described control system is connected with Yarn tension testing sensor.The described cam-type back rest 1 other end is connected with bearing bindiny mechanism 4.Also can comprise the cam-type back rest 1 as shown in Figure 2, the described cam-type back rest 1 one ends are connected with the first motor 2 by connecting axle 3.The described cam-type back rest 1 other end is connected with the second motor 5 by connecting axle 3.Described the first motor 2 is connected with control system respectively with the second motor 5; Described control system is connected with Yarn tension testing sensor.
This Cam-type electric back rest both can replace original mobile back rest, also can be used as an independently back rest (seeing Fig. 4), in Fig. 4, the warp yarns on warp beam 41 is successively by the electronic back rest 42, the fixedly back rest 43, the mobile back rest 44, opening 45, beating-up mechanism 46 and spooler 47.
(2) yarn tension data value measured on the Cam-type electric back rest and system preset value being made difference relatively calculates.Namely by the tension force detecting sensor, detect in real time the suffered tension force of yarn, and will detect to such an extent that tension force and the warp yarns tension force numerical value in predefined per cycle are done difference relatively.
(3) after difference is relatively calculated, the data of gained are used for controlling the drive unit of the Cam-type electric back rest as control signal.
(4) according to control signal, drive unit is rotated adjustment to the Cam-type electric back rest, changes the track of warp yarns, controls yarn tension and maintains in the error range that system allows, and guarantees weaving machine high-speed, normal operation.
Fig. 3 is yarn tension control block diagram of the present invention, in Fig. 3, and F
rFor setting tension force, F
sFor reality detect tension force,
For back rest corner regulated value,
For the real-time corner of the back rest, ω
rFor back-beam rotating angular speed set-point, ω
sFor the real-time rotational angular velocity of the back rest, F '
sFor warp tension.Be not difficult to find, the electronic back rest of the present invention belongs to active, by controlling the anglec of rotation of the cam back rest, can on-line control and control warp yarns tension force, so the control accuracy of yarn tension is greatly improved; Compare with warp beam, it is little that the back rest has a rotary inertia, and the characteristics that numerical value is fixing, and by improvement, design such as adopting the hollow back rest, the inertia of the back rest is expected to reduce closely to 1～2 order of magnitude than the minimum inertia of warp beam, therefore the control sensitivity of weaving machine yarns dynamic tension will be greatly enhanced, and make the dynamic control of yarn tension become possibility, will be the breakthrough of the control of present weaving machine yarns mean tension.
Claims (3)
1. the dynamic tension of the warp on loom based on an active electronic back rest control method, is characterized in that, comprises the following steps:
1. produce the Cam-type electric back rest with cam contour, wherein, the described Cam-type electric back rest is that the position mounted motor by the one or both ends at the cam-type back rest obtains;
2. by drive unit, the Cam-type electric back rest is rotated adjustment, changes the track of warp yarns, control yarn tension and maintain in the error range that system allows, guarantee weaving machine high-speed, normal operation.
2. the dynamic tension of the warp on loom based on active electronic back rest control method according to claim 1, is characterized in that, described step 1. and step further comprising the steps of between 2.:
A does difference to yarn tension data value measured on the Cam-type electric back rest and system preset value and relatively calculates;
After the B difference was relatively calculated, the data of gained were used for controlling the drive unit of the Cam-type electric back rest as control signal.
3. the dynamic tension of the warp on loom based on active electronic back rest control method according to claim 1, is characterized in that, described step 2. middle yarn tension detects and obtains by the tension force detecting sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103188822A CN102505292B (en) | 2011-10-19 | 2011-10-19 | Active motor-driven back rest based method for controlling dynamic tension of warps on loom |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103188822A CN102505292B (en) | 2011-10-19 | 2011-10-19 | Active motor-driven back rest based method for controlling dynamic tension of warps on loom |
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| CN102505292A CN102505292A (en) | 2012-06-20 |
| CN102505292B true CN102505292B (en) | 2013-11-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103556371A (en) * | 2013-11-11 | 2014-02-05 | 江南大学 | Method for controlling warp tension of sample weaving machine |
| CN104452056B (en) * | 2014-11-21 | 2016-08-24 | 东华大学 | A kind of weaving machine yarns dynamic tension that improves controls the back rest and the using method thereof of effect |
| CN105179640A (en) * | 2015-10-09 | 2015-12-23 | 江苏工程职业技术学院 | Method for making let-off tension adjusting deformation cam roller |
| CN114967422A (en) * | 2022-04-22 | 2022-08-30 | 海门喜满庭纺织品有限公司 | Warping machine intelligent detection and control system based on computer-aided decision |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1291627A1 (en) * | 1984-12-28 | 1987-02-23 | Московский Текстильный Институт Им.А.Н.Косыгина | Warp let-off motion of loom |
| JPH085519B2 (en) * | 1987-07-21 | 1996-01-24 | 株式会社タツノ・メカトロニクス | Oil leak detector |
| DE19915952A1 (en) * | 1998-12-07 | 2000-10-12 | Dornier Gmbh Lindauer | Improved method for compensating the change in elongation or tension in a warp and weaving machine to carry out the method |
| JP4085519B2 (en) * | 1999-05-28 | 2008-05-14 | 株式会社豊田自動織機 | Warp tension adjusting device for loom |
| CN1506513A (en) * | 2002-12-05 | 2004-06-23 | 津田驹工业株式会社 | Electric output control method for loom |
| RU2240390C2 (en) * | 2003-01-05 | 2004-11-20 | Государственное образовательное учреждение высшего профессионального образования Ивановская государственная текстильная академия (ИГТА) | Mechanism for tightening and releasing of warp on weaving machine |
| CN201873829U (en) * | 2010-11-23 | 2011-06-22 | 东华大学 | Yarn tension control device for weaving machine |
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