CN101760812A - Single-spindle single electric motor spun yarn tension control spinning frame - Google Patents
Single-spindle single electric motor spun yarn tension control spinning frame Download PDFInfo
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- CN101760812A CN101760812A CN200910176812A CN200910176812A CN101760812A CN 101760812 A CN101760812 A CN 101760812A CN 200910176812 A CN200910176812 A CN 200910176812A CN 200910176812 A CN200910176812 A CN 200910176812A CN 101760812 A CN101760812 A CN 101760812A
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Abstract
The invention provides a single-spindle single electric motor spun yarn tension control spinning frame and relates to a spinning frame, in particular to a single-spindle single electric motor spun yarn tension control spinning frame; the single-spindle single electric motor spun yarn tension control spinning frame comprises a reeling system device (1), a drafting system device (2), a yarn bracket (3), a supporting bracket (4), a base (5), a fixed sliding rod (6), a staff gauge (7) and a magnetic plate (8); the invention provides the single-spindle single electric motor spun yarn tension control spinning frame which limits balloon height and controls balloon shape, the spun yarn quality can be remarkably improved, the end breakage rate can be greatly reduced, and high production speed can be achieved, thereby radically solving the problem that the tensile force is changed abruptly owning to change of the balloon shape in the yarn winding process.
Description
Technical field:
The present invention relates to a kind of weaving fine spining machine, particularly relate to a kind of single-spindle single electric motor spun yarn tension control spinning frame.
Background technology:
The output of spun yarn and quality are to weigh an important index of a cotton mill production technology and managerial skills, large and smallly represent with the fine spining machine total amount and the cotton mill is production-scale.Spinning process is last one critical process of resultant yarn, and the output of resultant yarn and quality have very significant effects to factory's benefit.Bigger improvement and raising have also been done to ring throstle in countries in the world in the various novel spinning technology of development in recent years.Its characteristics present the board overlength, at a high speed, feature such as high draft, automation, serialization and intellectuality.Conventional spinning frame air ring control scheme, conventional spinning frame winding process are the rotations that is cooperated spindle by the lifting of ring rail, make the incidental looping moulding, finish Yarn twisting by steel traveler and spindle speed discrepancy simultaneously.The whole system co-ordination can be finished the coiling of the spinning spindle of reservation shape.Be segmentation control formula for fine spining machine ingot speed control method major part both at home and abroad, promptly utilize theory or experience that the spindle speed setting is several sections, directly speed is controlled by control assembly then.This control mode is difficult to external world environment and makes real-time response.Simultaneously, steel traveler is the parts of a non-direct driving, is dragged by the tension force of yarn, and its speed is difficult to accurately determine.
At present, the manufacturer of many textile machines adopts sectional type control more.According to the difference of controlled quentity controlled variable, it can be divided into two kinds of " fixed length formula " and " layer-steppings ".The former carries out segmentation with the coiling length of spun yarn, and the latter carries out segmentation with the diverse location of ring rail.In actual production, for length of yarn measure, the segmentation ratio is easier to realize, so application is more.
In the traditional handicraft, ingot velocity modulation joint method has two kinds: a kind of is the rotating speed that comes adjusting key according to the tension variation and the broken end regularity of distribution of little yarn, middle yarn and big yarn, and promptly little spindle speed is lower, and middle spindle speed is high, and big spindle speed reduces again.This type of control method was once used in FA512.Another kind is on the basis of basic governing speed, along with winding diameter and air ring height change are done suitable meticulous adjustment, is referred to as successively to regulate.Reaching above-mentioned effect must have the complicated electrical converter device of a cover, and equipment cost is higher, and complex management is difficult in maintenance.Conventional spinning frame adopts the cam shaping mechanism because the route of transmission is long. and make mechanical shock bigger, power consumption is big; Adjust manufacturing parameter simultaneously and comparatively bother, difficult in maintenance.For this reason, we pass through to reduce conversion gear in the present invention.Utilize the independent transmission of many motors to address the above problem.
Summary of the invention:
The purpose of this invention is to provide a kind of single-spindle single electric motor spun yarn tension control spinning frame, it can solve the existing problem of background technology, because the route of transmission is long, adopts the cam shaping mechanism at conventional spinning frame, makes mechanical shock bigger, and power consumption is big; Adjust manufacturing parameter simultaneously and comparatively bother, difficult in maintenance.The present invention proposes a kind of qualification balloon height, control the single-spindle single electric motor spun yarn tension control spinning frame of balloon shape, can significantly improve the quality of spun yarn, reduce end breakage rate greatly, can obtain higher production simultaneously.Fundamentally having solved yarn in the process of coiling, change the problem of the sudden change of the tension force that causes owing to its balloon shape.
In order to solve the existing problem of background technology, it comprises reel system device 1, drafting system device 2, yarn creel 3, bracing frame 4, base 5, fixed slip bar 6, scale 7, magnetic sheet 8 the present invention, bracing frame 4 is fixedly mounted on the base 5, two reel system devices 1 are installed both sides, bracing frame 4 lower end, two drafting system devices 2 are installed in the both sides of reel system device 1 upper support frame 4, yarn creel 3 is installed in bracing frame 4 tops, fixed slip bar 6 is arranged on the bracing frame 4, scale 7 is fixedly mounted on the bracing frame 4, and its back side is provided with magnetic sheet 8;
It comprises spindle system device 1-1 described reel system device 1, the first stepper motor 1-2, synchronous toothed belt 1-3, guide button 1-4, ring rail 1-5, spindle case fixed mount 1-6, photo-electric type velocity sensor 1-7, the first stepper motor 1-2 is arranged on the base 5, synchronous toothed belt 1-3 is connected by its driving with the first stepper motor 1-2, guide button 1-4 is provided with on the spindle system device 1-1 upper support 4, spindle 1-1-2 passes ring rail 1-5 and is installed on the fixed slip bar 6 among the spindle system device 1-1, spindle case fixed mount 1-6 is arranged on the bracing frame 4, and photo-electric type velocity sensor 1-7 is installed on the first stepper motor 1-2 direction of principal axis;
It comprises spindle blade 1-1-1 described spindle system device 1-1, spindle 1-1-2, high-speed bearing 1-1-3, spindle blade fixed block 1-1-4, high speed direct current generator 1-1-5, flexible connector 1-1-6, spindle case 1-1-7, gear 1-1-8, the first integrated velocity sensor 1-1-9, spindle blade 1-1-1 is linked on the high speed direct current generator 1-1-5 by flexible connector 1-1-6 by high-speed bearing 1-1-3, high speed direct current generator 1-1-5 is installed in the spindle case 1-1-7, spindle blade fixed block 1-1-4 between high-speed bearing 1-1-3 and high speed direct current generator 1-1-5 is enclosed within spindle 1-1-2, and the first integrated velocity sensor 1-1-9 is installed on the cross section of the gear 1-1-8 that direct current generator 1-1-5 drives;
It comprises reel cage 2-1, front roller 2-2, middle roller 2-3, rear roller 2-4, the second stepper motor 2-5, change gear 2-6, the 3rd stepper motor 2-7, the second integrated velocity sensor 2-8 described drafting system device 2, front roller 2-2, middle roller 2-3, rear roller 2-4 are fixedly mounted on reel cage 2-1 top in order, and the second stepper motor 2-5, change gear 2-6, the 3rd stepper motor 2-7, the second integrated velocity sensor 2-8 are installed in reel cage 2-1 bottom;
The present invention proposes a kind of qualification balloon height, control the single-spindle single electric motor spun yarn tension control spinning frame of balloon shape, can significantly improve the quality of spun yarn, reduce end breakage rate greatly, can obtain higher production simultaneously.Fundamentally having solved yarn in the process of coiling, change the problem of the sudden change of the tension force that causes owing to its balloon shape.
Description of drawings:
Fig. 1 is a structural representation of the present invention; Fig. 2 is a reel system apparatus structure schematic diagram of the present invention; Fig. 3 is a spindle system apparatus structure schematic diagram of the present invention; Fig. 4 is a drafting system apparatus structure schematic diagram of the present invention; Fig. 5 is a drafting system device motor distributed architecture schematic diagram of the present invention; The integrated velocity sensor of Fig. 6 the present invention installation site figure; Fig. 7 is photo-electric type velocity sensor installation site figure of the present invention.
The specific embodiment:
It comprises reel system device 1, drafting system device 2, yarn creel 3, bracing frame 4, base 5, fixed slip bar 6, scale 7, magnetic sheet 8 this specific embodiment, bracing frame 4 is fixedly mounted on the base 5, two reel system devices 1 are installed both sides, bracing frame 4 lower end, two drafting system devices 2 are installed in the both sides of reel system device 1 upper support frame 4, yarn creel 3 is installed in bracing frame 4 tops, fixed slip bar 6 is arranged on the bracing frame 4, scale 7 is fixedly mounted on the bracing frame 4, and its back side is provided with magnetic sheet 8;
It comprises spindle system device 1-1 described reel system device 1, the first stepper motor 1-2, synchronous toothed belt 1-3, guide button 1-4, ring rail 1-5, spindle case fixed mount 1-6, photo-electric type velocity sensor 1-7, the first stepper motor 1-2 is arranged on the base 5, synchronous toothed belt 1-3 is connected by its driving with the first stepper motor 1-2, guide button 1-4 is provided with on the spindle system device 1-1 upper support 4, spindle 1-1-2 passes ring rail 1-5 and is installed on the fixed slip bar 6 among the spindle system device 1-1, spindle case fixed mount 1-6 is arranged on the bracing frame 4, and photo-electric type velocity sensor 1-7 is installed on the first stepper motor 1-2 direction of principal axis;
It comprises spindle blade 1-1-1 described spindle system device 1-1, spindle 1-1-2, high-speed bearing 1-1-3, spindle blade fixed block 1-1-4, high speed direct current generator 1-1-5, flexible connector 1-1-6, spindle case 1-1-7, gear 1-1-8, the first integrated velocity sensor 1-1-9, spindle blade 1-1-1 is linked on the high speed direct current generator 1-1-5 by flexible connector 1-1-6 by high-speed bearing 1-1-3, high speed direct current generator 1-1-5 is installed in the spindle case 1-1-7, spindle blade fixed block 1-1-4 between high-speed bearing 1-1-3 and high speed direct current generator 1-1-5 is enclosed within spindle 1-1-2, and the first integrated velocity sensor 1-1-9 is installed on the cross section of the gear 1-1-8 that direct current generator 1-1-5 drives;
It comprises reel cage 2-1, front roller 2-2, middle roller 2-3, rear roller 2-4, the second stepper motor 2-5, change gear 2-6, the 3rd stepper motor 2-7, the second integrated velocity sensor 2-8 described drafting system device 2, front roller 2-2, middle roller 2-3, rear roller 2-4 are fixedly mounted on reel cage 2-1 top in order, and the second stepper motor 2-5, change gear 2-6, the 3rd stepper motor 2-7, the second integrated velocity sensor 2-8 are installed in reel cage 2-1 bottom;
The present invention proposes a kind of qualification balloon height, control the single-spindle single electric motor spun yarn tension control spinning frame of balloon shape, can significantly improve the quality of spun yarn, reduce end breakage rate greatly, can obtain higher production simultaneously.Fundamentally having solved yarn in the process of coiling, change the problem of the sudden change of the tension force that causes owing to its balloon shape.
The form that the present invention is directed to air ring redesigns its relevant mechanism, make the ring rail fixed-site, and the position of spindle can be controlled.Air ring is converted into stable status by dynamic change like this.Motion state for unpowered element steel traveler just is converted into plane motion by the space screw motion like this, makes balloon tension more stable to the control of steel traveler, can reduce the burst tension force of air ring, also can prolong the life-span of steel traveler.By demonstration, it is well grounded in theory, thereby mechanism is carried out specific aim design, the Control System Design that breaks traditions the air ring equation.This be not by to type in the improvement that keeps conventional roll around the basis of twisting mechanism, but for the fine spining machine drafter, a kind of new design of transmission mechanism and automation controlling organization.Can control the single spindle spinning frame reel system of ingot position formula mainly is to utilize stepper motor or other servomotor to replace traditional cam shaping mechanism, and according to its characteristics of motion the process of reeling is controlled.
In fine spining machine of the present invention, the first stepper motor 1-2 is placed on base 5 tops, the yarn of the dispersion of sending from drafter device 2, process guide button 1-4 is wound onto and inserts on the spool of spindle blade 1-1-1, spindle blade 1-1-1 is linked on the high speed direct current generator 1-1-5 by flexible connector 1-1-6 by high-speed bearing 1-1-3, this high speed direct current generator 1-1-5 is installed in spindle case 1-1-7 the inside, this spindle case 1-1-7 is installed on the spindle case fixed mount 1-6, between high-speed bearing 1-1-3 and high speed direct current generator 1-1-5, there is a spindle blade fixed block 1-1-4 to be enclosed within on the spindle 1-1-2, spindle passes a ring rail 1-5, whole spindle system device is installed on the fixed slip bar 6, the first stepper motor 1-2 drives synchronous toothed belt 1-3 transmission, synchronous toothed belt 1-3 drives the elevating movement that whole above-mentioned spindle system device is realized spindle system, in this fine spining machine drafting system device part, front roller 2-2 is driven by the second stepper motor 2-5, rear roller 2-4 is driven by the 3rd stepper motor 2-7, middle roller 2-3 is driven it by change gear 2-6 by rear roller 2-4, the second integrated velocity sensor 2-8 realizes the roller rotating speed is monitored, the speed of the 3rd stepper motor 2-7 is controlled according to the process of control automatically by electric control system, the speed of the second integrated velocity sensor 2-8 is sent into electric control system, and carry out analysis and judgement to leading secondary multiple by electric control system, thereby realize online Detection ﹠ Controling, the drafting system device by overall fixed on reel cage 2-1, for realizing state control to the first stepper motor 1-2 and high speed direct current generator 1-1-5, install a photo-electric type velocity sensor 1-7 additional at the first stepper motor 1-2 direction of principal axis respectively, the alignment probe of photo-electric type velocity sensor 1-7 is fixed on the scale 7 on the lathe, the back side of this scale 7 is to be close to a magnetic sheet 8, installs the first integrated velocity sensor 1-1-9 on the cross section of the gear 1-1-8 of the drive of direct current generator 1-1-5 additional.
In the reel system device, traditional reel system is improved and designs around us in order to realize spindle 1-1-2 dynamic volume, a kind of new winding mechanism has been proposed.Moving up and down of spindle 1-1-2 drives synchronous toothed belt 1-3 by the first stepper motor 1-2, and the integral body that drives spindle 1-1-2 moves up and down, and steel traveler is fixed on the ring rail 1-5.Ring rail 1-5 then is fixed on the frame, keeps motionless and maybe can finely tune.Spindle 1-1-2 finishes not constant speed rising and descends along with moving up and down of synchronous toothed belt 1-3, can realize that the level of spindle 1-1-2 rises simultaneously easily.The function that can replace the reel system of conventional spinning frame fully.In order to realize conical cross winding, sizes such as the speed of the equation of motion of spindle 1-1-2 lifting and conventional spinning frame ring rail 1-5 and acceleration are identical, but direction is opposite.
Utilization is to ring rail 1-5, and the control of front and back roller and ingot speed can obtain the Mathematical Modeling of drive of motor, makes spindle 1-1-2 that a good moulding be arranged.By theory analysis can obtain this system volume around the time, yarn burst tension force is very little, so the pre-value of tension force can be obtained greatlyyer, and then realizes higher ingot speed coiling, so promptly can save traditional cam mechanism, ratchet mechanism, complicated mechanical parts such as coiling gear and twist transformation gear.Improve the running precision of mechanism, the reliability and maintainability of machine, reduced working strength of workers.
The first stepper motor 1-2 can drive synchronous toothed belt 1-3 drive spindle 1-1-2 and carry out lifting with certain speed, and ring rail 1-5 is maintained fixed, and uses the motor speed of photo-electric type pulse coder and front roller, rear roller and location stepping synchronous with the rotating speed maintenance of spindle 1-1-2.This reel system just can be realized synchronous coordination work, realizes the constant formula coiling of balloon shape.For realizing the high-speed winding of spindle 1-1-2, adopt single ingot transmission, more free and accurate control can be provided like this, reduce the ingot differences, improve the quality of production and efficient.
Driving for spindle can mainly contain the winding tension of frictional force and yarn and the resistance three parts composition of air, there is the actual conditions analysis can take by force the frictional force of control resistance and spindle self, for the large and small ultimate strength that can get its yarn of determining yarn tension is a winding tension, this also be Yarn break the extreme value that may get.The present invention is with maximum (top) speed 25000r/min for this reason, and the radius of rings is 48 millimeters, and the ultimate strength of yarn is that 400g is a reference design, and the power that can calculate high speed direct current generator 8 by horse-power formula is 241.18 watts.Can select zyKw55-1 type direct current generator.Spindle 5 is driven by high speed direct current generator 8, required commentariess on classics of actual rotation apart from less (＜0.00047Nm), among the present invention, adopt the high speed direct current generator that Chang'an, packet header magneto is researched and developed a company.
This fine spining machine can be cancelled the shaping cam and the mechanisms such as ratchet, chain of transmission, makes to design more compact and reasonable.For realizing that modern automatic control can be with the various parameters of above-mentioned motion.The step number of the first stepper motor 1-2, time of implementation etc. are put into the memory of electric control system, this can replace source data easily, also can handle incorrect data, by electric control system control spindle 1-1-2, the rotation of direct current generator 1-1-5 and lifting motor make it to cooperate.
In the engagement process of control of the fine spining machine twist and coiling, for guaranteeing spun yarn brute force and quality, its twist control is become equally important in the fine spining machine winding process.In the present invention, the twist of spun yarn can drive front roller 2-2 by the second stepper motor 2-5, drives rear roller 2-4 by the 3rd stepper motor 2-7, cooperates transition gear to realize drawing-off to rove, and matches with the rotating speed of spindle 1-1-2 and can realize control to the twist.The size of the twist depends on the difference of the rotational frequency of the speed of spindle 1-1-2 and steel traveler, because steel traveler is the element that a non-power directly drives, therefore is difficult to change the rotating speed of steel traveler in the practice.By changing the speed of front roller 2-2, change the length of coiling yarn and then change twist value, cooperate by the speed of roller and the rotating speed of spindle 1-1-2 like this.Just can be met the yarn that we require.
In the control procedure of the present invention to spindle 1-1-2 speed, directly drive spindle 1-1-2 with direct current high-speed electric expreess locomotive 1-1-5, simple in structure like this, drive circuit industrialization simultaneously and the electric control system mouth realize easily.When the excitation voltage of direct current generator equated with load torque, armature voltage was big, the motor speed height, and voltage drop is as low as zero right, and motor stops operating.
In the application to sensor and stepper motor, to designing with the second stepper motor 2-5 of sensor, we utilize sensing to clamor can to realize the monitoring to system, are finished the realization of control simultaneously by actuating unit.Main motor is selected high-speed electric expreess locomotive for use, carries out speed governing by electric control system, and interface simply can be realized the control of ingot speed real-time speed.Other motor is selected stepper motor for use, can finish many motors ground synchronous variable-speed, and step motor control is flexible simultaneously, and is difficult for step-out, the control accuracy height.It can be worked with motor corresponding driving device by the matching coding device, constitutes a closed-loop control, and asks when having less response, can satisfy the needs of control.Doff, begin to spin the position of position and full packages for control, we have adopted near switch, integrated speed probe and highly sensitive position sensor.The present invention selects Hall element for use, and this is a kind of sensor that has utilized your effect of shake to measure.It not only can carry out non-cpntact measurement, can not rely on magnetic field to obtain energy again.
Claims (4)
1. single-spindle single electric motor spun yarn tension control spinning frame, it is characterized in that it comprises reel system device (1), drafting system device (2), yarn creel (3), bracing frame (4), base (5), fixed slip bar (6), scale (7), magnetic sheet (8), bracing frame (4) is fixedly mounted on the base (5), two reel system devices (1) are installed bracing frame (4) both sides, lower end, two drafting system devices (2) are installed in the both sides of reel system device (1) upper support frame (4), yarn creel (3) is installed in bracing frame (4) top, fixed slip bar (6) is arranged on the bracing frame (4), scale (7) is fixedly mounted on the bracing frame (4), and its back side is provided with magnetic sheet (8).
2. a kind of single-spindle single electric motor spun yarn tension control spinning frame according to claim 1, it comprises spindle system device (1-1) to it is characterized in that described reel system device (1), first stepper motor (1-2), synchronous toothed belt (1-3), guide button (1-4), ring rail (1-5), spindle case fixed mount (1-6), photo-electric type velocity sensor (1-7), first stepper motor (1-2) is arranged on the base (5), synchronous toothed belt (1-3) is connected by its driving with first stepper motor (1-2), guide button (1-4) is provided with on spindle system device (1-1) upper support (4), the middle spindle (1-1-2) of spindle system device (1-1) passes ring rail (1-5) and is installed on the fixed slip bar (6), spindle case fixed mount (1-6) is arranged on the bracing frame (4), and photo-electric type velocity sensor (1-7) is installed on first stepper motor (1-2) direction of principal axis.
3. according to the described a kind of single-spindle single electric motor spun yarn tension control spinning frame of claim 1-2, it comprises spindle blade (1-1-1) to it is characterized in that described spindle system device (1-1), spindle (1-1-2), high-speed bearing (1-1-3), spindle blade fixed block (1-1-4), high speed direct current generator (1-1-5), flexible connector (1-1-6), spindle case (1-1-7), gear (1-1-8), the first integrated velocity sensor (1-1-9), spindle blade (1-1-1) is linked on the high speed direct current generator (1-1-5) by flexible connector (1-1-6) by high-speed bearing (1-1-3), high speed direct current generator (1-1-5) is installed in the spindle case (1-1-7), spindle blade fixed block (1-1-4) between high-speed bearing (1-1-3) and high speed direct current generator (1-1-5) is enclosed within spindle (1-1-2), and the first integrated velocity sensor (1-1-9) is installed on the cross section of the gear (1-1-8) that direct current generator (1-1-5) drives.
4. a kind of single-spindle single electric motor spun yarn tension control spinning frame according to claim 1, it comprises reel cage (2-1) to it is characterized in that described drafting system device (2), front roller (2-2), middle roller (2-3), rear roller (2-4), second stepper motor (2-5), change gear (2-6), the 3rd stepper motor (2-7), the second integrated velocity sensor (2-8), front roller (2-2), middle roller (2-3), rear roller (2-4) is fixedly mounted on reel cage (2-1) top, second stepper motor (2-5) in order, change gear (2-6), the 3rd stepper motor (2-7), the second integrated velocity sensor (2-8) is installed in reel cage (2-1) bottom.
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| CN200910176812A CN101760812A (en) | 2009-09-22 | 2009-09-22 | Single-spindle single electric motor spun yarn tension control spinning frame |
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| CN200910176812A CN101760812A (en) | 2009-09-22 | 2009-09-22 | Single-spindle single electric motor spun yarn tension control spinning frame |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776616A (en) * | 2012-07-31 | 2012-11-14 | 太仓仕禾线网制造有限公司 | Coiling device for twisting machine |
| CN103541174A (en) * | 2011-11-26 | 2014-01-29 | 南通全技纺织涂层有限公司 | High-performance coated fabric coating thickness online detection and self-adaptation control device |
| CN105755593A (en) * | 2016-04-01 | 2016-07-13 | 南通金驰机电有限公司 | Multifunctional computer numerical control spinning and proofing machine |
| CN109898190A (en) * | 2019-04-25 | 2019-06-18 | 李廷荔 | It is a kind of with stablize air ring spindle lifting spinning frame |
| CN110670191A (en) * | 2019-09-30 | 2020-01-10 | 三峡大学 | Device and method for judging diameter of rotary circumscribed circle of wire rod |
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2009
- 2009-09-22 CN CN200910176812A patent/CN101760812A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541174A (en) * | 2011-11-26 | 2014-01-29 | 南通全技纺织涂层有限公司 | High-performance coated fabric coating thickness online detection and self-adaptation control device |
| CN103541174B (en) * | 2011-11-26 | 2015-07-01 | 南通大学 | High-performance coated fabric coating thickness online detection and self-adaptation control device |
| CN102776616A (en) * | 2012-07-31 | 2012-11-14 | 太仓仕禾线网制造有限公司 | Coiling device for twisting machine |
| CN102776616B (en) * | 2012-07-31 | 2014-06-11 | 太仓仕禾线网制造有限公司 | Coiling device for twisting machine |
| CN105755593A (en) * | 2016-04-01 | 2016-07-13 | 南通金驰机电有限公司 | Multifunctional computer numerical control spinning and proofing machine |
| CN109898190A (en) * | 2019-04-25 | 2019-06-18 | 李廷荔 | It is a kind of with stablize air ring spindle lifting spinning frame |
| CN110670191A (en) * | 2019-09-30 | 2020-01-10 | 三峡大学 | Device and method for judging diameter of rotary circumscribed circle of wire rod |
| CN110670191B (en) * | 2019-09-30 | 2021-09-21 | 三峡大学 | Device and method for judging diameter of rotary circumscribed circle of wire rod |
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Open date: 20100630 |