CN100434585C

CN100434585C - Device and method for feeding an elastomeric yarn to a textile machine

Info

Publication number: CN100434585C
Application number: CNB03805048XA
Authority: CN
Inventors: 蒂齐亚诺·巴里亚
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-10
Filing date: 2003-03-28
Publication date: 2008-11-19
Anticipated expiration: 2023-03-28
Also published as: RU2004133029A; AU2003226739A1; US20050173579A1; EP1492911B1; ITMI20020770A1; ATE466982T1; EP1492911A1; EP1492911B9; ES2345098T3; DE60332444D1; CN1639401A; ITMI20020770A0; WO2003085183A1

Abstract

A device for controlling the feed of an elastomeric yarn, of known elastic characteristics, withdrawn from a bobbin (B) and fed to a textile machine such as a knitting machine, a stocking machine, a bobbin winder or other textile machine, said yarn possessing an intrinsic elasticity and being fed to said machine with an intrinsic speed, there being provided means for sensing the tension of the yarn and means for measuring and modifying this speed, both associated with a single body of the device and both connected to means for controlling and regulating said tension and speed parameters; means for compensating the variation in the elongation of the yarn being provided to maintain the diameter and the quantity of the yarn fed to the textile machine constant. The method implemented by this device is also claimed.

Description

Be used for elastomeric yarn is fed the apparatus and method of weaving loom

Technical field

The present invention relates to its objective is the article of acquisition constant quality in each several part at the device that is used for elastomeric yarn is fed weaving loom described in the preamble of corresponding independent claims.The invention still further relates to a kind of in the method described in the preamble of corresponding independent claims by said apparatus enforcement.In textile industry, the main device that is known as thread-carrier that adopts is fed into yarn in the weaving loom with " constant number " or " constant-tension ".

Background technology

First generation thread-carrier is made of mechanical organ or electronic driver, various electric notors can with yarn with each production stage in the synchronous speed feeding of the operating rate of weaving loom.In this mode, with respect to " amount of yarn " that feed in process of production, parameter keeps constant in each production stage, and therefore, weaving loom is worked under the tension force feeding state of " constant basis ".

This device also is used to feed stretch yarn, for example stretch yarn is fed in the major diameter circular knitting machine; This class device comprises a skin pulley, and synchronous with the final drive shaft of weaving loom, the stretch yarn that is arranged on the described skin pulley is fed into weaving loom by rotation by a belt for it, and yarn is unwinding in a controlled manner.

Such other device for example, is that those are fed into the stretch yarn of controlled quatity in the course of the work and are used to produce stocking, the device in the round weaving loom of Lingerie etc.These devices use a yarn feeding roller or a thread wheel usually, and this yarn feeding roller or thread wheel are by electric motor drive, and be synchronous with the syringe speed of gyration of weaving loom, thereby guarantee that the yarn feeding can be in controlled or variable amount according to the procedure of processing that is realized.

Yet, purpose is yarn these devices with " constant basis " feeding can not be solved fully with the problem of elastomeric yarn with precisely controlled amount feeding, because, the yarn that comes from the yarn tube is " flexible ", the elongation of this yarn is variable, and this variation changes along with the unwinding yarn tension variation.

In order to overcome these problems, developed the yarn feeding device that is called as " second generation device ", it can be with " constant tension force " yarn feeding.

These devices comprise a yarn tension sensor, this yarn tension sensor links to each other with treatment circuit with measurement, it can provide " closed loop (closed-loop) " control for the motor that acts directly on roller on the yarn or wheel, so that yarn is fed under " constant-tension " feeding state.

For example, disclose a kind of like this device in EP950742, this device is used to control yarn and is fed into weaving loom such as knitting machine, hosiery machine or bobbin winder; Yarn has intrinsic tension force, is fed in the weaving loom with proper velocity, is provided with the device that is used to detect this intrinsic tension force, and the device of measuring this proper velocity.Described checkout gear all links to each other with whole device main body with measurement mechanism, and all the control with tension force and speed parameter links to each other with adjusting device, these controls and adjusting device are measured described tension force and speed parameter continuously in yarn is fed into process in the weaving loom, and will be at least one of them compare so that accurately definite another parameter values with predetermined even data.

Should have in the patent and also speak of except other guide, velocity measuring device links to each other with the motor apparatus that can change the feeding yarn linear velocity, this change is to carry out according to detected tension value, by known mechanical transmission component described motor apparatus is linked to each other with pivoted member.These motor apparatus link to each other with the control device that is made of microprocessor unit, and microprocessor unit links to each other with the control element of weaving loom, and by the weaving loom control element, microprocessor unit is being handled the motor apparatus that acts on velocity measuring device.

Although these install with regard to the quality of the fabric of the weaving loom production of adopting them or article, to have made significant headway, they can not be thought is enough to the demand that the satisfied textiles quality of being made by stretch yarn improves constantly.Thus, although described device is with constant tension force feeding yarn, therefore and can make reaction energetically to any variation of the tension force of the yarn that gets off from the unwinding of yarn tube, but these devices can not be guaranteed effectively " constant number ", because the elongation of yarn is along with the unwinding tension of yarn tube is changing.

Thus, this " constant-tension " yarn feeding device can provide the yarn feeding of so-called " constant basis ", and this situation is more accurate in the yarn situation than small tension receiving coil.On the contrary, from the yarn tube of still expiring and therefore the stretch yarn that the unwinding tension that the stretch yarn that comes has comes less than the yarn tube that consumes from part, extends also less.Thus, if cause yarn to be fed into the same weaving loom from two such yarn tubes, (form) textiles so and will have bad quality by these two kinds of yarns by two identical " constant-tension " yarn feeding devices.Although this is because every one thread feeds with constant tension force, but but stood the difference " processing " of corresponding yarn feeding device: from the yarn tube of still expiring and the yarn speed that comes will be than from the yarn that comes with empty yarn tube with lower speed (promptly, with less amount) feeding, this is in order to compensate from two yarn tubes and two kinds of different unwinding tensions that come.This different yarns feeding will cause textiles to produce bad quality, such as, the processing of two kinds of different yarns can distinguish.

Another aforementioned type device is open in GB2162971, and it relates to and a kind ofly yarn is fed into weaving loom such as knitting machine, the device in the loom etc.This device comprises a yarn feeding device, and this yarn feeding device is subjected to an electricity and leads motor (electric guide motor) control, and this electricity is led the speed-controllable of motor, and this speed is subjected to the control of an output signal, and this output signal is being controlled the translational speed of yarn.It is synchronous that electricity is led the speed and the described output signal of motor, and this output signal representative yarn feed speed.Be provided with tension element and automatically yarn tension maintained a value of selecting in advance.

Summary of the invention

Purpose of the present invention just provides a kind of improved apparatus and method that are used for stretch yarn is fed into a weaving loom, and the defective mentioned above that it can overcome in the prior art can obtain fabulous and textiles constant quality.

What understand to those skilled in the art is that this purpose of the present invention and other purposes can obtain by apparatus and method of the present invention.

According to device of the present invention, a kind of device that is used to control the stretch yarn feeding is provided, this stretch yarn has known elasticity, and withdraw from the yarn tube and to get off to be fed into weaving loom, described yarn has intrinsic elasticity and is fed in the described weaving loom with intrinsic speed, be provided with and be used to the device that detects the device of yarn tension and be used to measure and change yarn speed, described checkout gear and described measurement and modifier all are connected to the device that is used to control and regulate described tension force and speed parameter, described control and adjusting device are measured the value that is fed into two parameters in the process of weaving loom at yarn continuously, it is characterized in that, also comprise compensation arrangement, its compensation from the yarn tube withdraw the stretch yarn that gets off with dimensional characteristic before tension detecting apparatus and velocity measuring device cooperate, thereby can make that during the whole production of textiles yarn is fed in the described weaving loom with constant dimensional characteristic.

The method according to this invention, provide a kind of being used for that stretch yarn is fed into weaving loom to obtain the textiles of each several part constant quality, described method comprises that measurement is from the unwinding of yarn tube and be fed into tension force and the speed or the quantity of the yarn the weaving loom, described method is characterised in that, after under the unwinding of yarn tube, yarn effect and change it and be transported to speed in the weaving loom, described some place that acts on the upstream that is positioned at described yarn speed and tonometry position on the yarn path implements, the speed of yarn is measured in the downstream of the described point on the yarn path continuously simultaneously, and acts on described yarn to keep the size stability of the yarn that feeds weaving loom on measured yarn speed basis.

Description of drawings

By non-limitative example shown in the drawings, can obtain more clearly to understand to the present invention, wherein:

Fig. 1 is the front view according to device of the present invention;

Fig. 2 is a side view, shows the part according to device of the present invention;

Fig. 3 is a block diagram, shows an embodiment of the inventive method;

Fig. 4 is a flow chart, shows a step of the inventive method.

The specific embodiment

With reference to accompanying drawing, see figures.1.and.2 particularly, show a device 1 that is used for stretch yarn 11 is fed into " constant tension force " textile machine 10.This device is indicated by DTC in Fig. 4, comprises main body 2 (for example box-like).This main body is connected with the wheel or the pulley 3 of a trough of belt, and this pulley 3 links to each other with a driver (not shown), moves realizing.This driver can be electric notor (a for example brushless type), and this electric notor links to each other with surperficial 6 opposite surfaces with main body 2, and described pulley 3 is positioned on described surperficial 6.Such device 1 links to each other with the every stretch yarn 11 that will feed weaving loom, and described yarn goes up that unwinding is got off and round pulley 3 circle or the multi-turn of reeling from yarn tube B.

This pulley is connected on the element 12 directly or indirectly, and this element 12 is measured the rotation of pulley, thereby measures the speed of this rotation.This element can be a Magnetic Sensor 13, this sensor 13 links to each other with main body 2 and cooperates with a magnet that links to each other with pulley 15, described element can also be the known Hall sensor (brushless motor that has the Hall sensor) that links to each other with motor, and described motor drive pulley 3 moves.

Main body 2 is also supporting an element 18 that is used to measure yarn 11 tension force that are sent to weaving loom 10; This element is a known type, can comprise common Magnetic Sensor, piezoelectric transducer, load cell, resilient support arms (armlet) or other sensors known.

Tonometry element 18, be used to measure pulley and the measuring cell 13 of the velocity of rotation of the motor that links to each other with pulley is connected to the unit 20 of the yarn 11 that is used to control and regulate feeding textile machine 10.Advantageously, this unit 20 1 (being embedded in the main body 2) linked to each other with device, and can be by the amount (the rice number of per minute) that is fed into yarn in the weaving loom of also accurately measuring correct with being connected of described measuring cell, wherein used evaluation algorithms, this evaluation algorithms has been considered the velocity of rotation of the tension force and the pulley of measured yarn 11.Thus, at definite yarn count when (representing) by DENIER or dtex, known to be relation between the Unit Weight of the amount of thread of unit and yarn with rice, then can calculate the weight of yarn or be fed into amount of thread by weight (amount of in textiles, using) in the weaving loom, therefore, can calculate the cost of product.For unit 20, for example, microprocessor type is connected with common setting member, and setting member links to each other with main body 2; These elements are an interface keypad 22 that links to each other with described unit 20 or common potentiometer (23).For this unit 20, advantageously also be connected with a display 25, on this display 25, unit 20 shows the data that measure, (programme controlled tension force and other can be by the functions of described unit programming such as the yarn feed speed that is fed into the yarn in the weaving loom 10, amount of thread, its tension force and other data relevant with yarn or unit itself, alarm, or the like).

According to the present invention, at the yarn tube with install between 1, be provided with an element 30 that is used to compensate stretch yarn 11 variable elongation, this stretch yarn has known elasticity.This element 30 can compensate along with yarn tube diameter reduces and physical change on yarn 11 diameters that produce, and to keep the elongation of yarn, the amount of thread that therefore is fed in the weaving loom keeps constant.

Particularly, in an embodiment of the present invention, element 30 comprises a wheel apparatus 31, this wheel apparatus 31 is by driver 33 cross-brace, this driver for example can be electric (for example electric notor etc., as brushless type) or air operated, and it rotates round its axis.This wheel apparatus has groove 31A, and this wheel apparatus also serves as braking element or yarn is fed into element in the DTC device 1, and yarn 11 is wound among the groove 31A.Driver 33 (Fig. 3) be connected to control module as microprocessor 34 (for example as shown in Figure 2 with as described in motor link to each other), this control module 34 links to each other with the unit 20 of described device 1.Unit 20 and unit 34 are exchanging the data of the speed in the weaving loom 10 that is fed into about yarn 11, can make the rapid change of wheel apparatus 31 so that the speed of the yarn of separating device 1 (via pulley 3) is produced corresponding the correction, the speed or the amount of thread that will be fed into the yarn 11 in the weaving loom 10 are then kept constant.As shown in Figure 3, unit 20 can also cooperate with the control module 27 that is used for weaving loom 10.Particularly, wheel apparatus 31 is according to needed setting yarn speed (or amount) (being indicated by the SPV among Fig. 4) the described yarn of braking or toward the more yarns of device 1 feeding.This setting can be following form:

(a) be fed into the mean value of all speed of the yarn in many feeder textile machine.After the startup of these many feeder textile machine, the speed of every one thread can be measured in several milliseconds, therefore, all speed datas by the pulley 3 that cooperates with every one thread 11 with control module 27 cooperations and the measurement of weaving loom 10, the unit 34 of each element 30 can affact on the corresponding wheel apparatus 31, thereby brakes the feeding speed that corresponding yarn or increase are fed into pulley 3.Because the driver of pulley 3 is subjected to the control of corresponding units 20, just can make yarn increase or reduce its speed, thereby make the amount that is fed into the yarn in the weaving loom 10 equal to be fed into the amount of the every other yarn in the weaving loom, be used to produce an identical textiles.

(b) be that every one thread is set a value: in this case,

unit

20 and 34 interacts, thereby, keep the yarn 11 previously selected speed that are fed in the weaving loom 10 in the mode of in (a), describing, therefore, also keep the yarn that is fed into required constant basis in the weaving loom 10;

(c) according to the changing value of the procedure of processing of textiles.In this situation, operation is proceeded according to the situation in (b).

With reference to Fig. 4, method of the present invention is carried out according to following process: after starting (square frame 40), yarn feed speed is subjected to the measurement (square frame 41) of DCT device 1; Speed of setting in unit 34 (square frame 42) (SPV for example equals 50 meters/minute) and the velocity ratio that records are.If via the yarn feed speed of DCT device 1 greater than SPV speed, then unit 34 effect wheel apparatus 31 reduce Yarn braking amount (square frame 43) and extract more yarn 11 out from yarn tube B, thereby the DCT device works on the speed that is set in the unit 34, and this unit 34 has its oneself pulley 3.If opposite, the yarn feed speed of DCT device 1 is less than SPV speed, and the unit 34 of then controlling wheel apparatus 31 increases the amount (square frame 44) of braking yarn 11.These brakings of also therefore being undertaken by pulley 3 by wheel apparatus 31 increase/reduce to regulate to repeat to be forced to up to the DCT device 1 with " constant-tension " feeding yarn 11 and obtain one and equal to set in unit 34 and the yarn feed speed of the speed of programming.Therefore, these adjustings cause the variation on the yarn tension to be controlled by wheel apparatus 31 and pulley 3, and the adjusting of wheel apparatus 31 and pulley 3 makes the yarn feeding of DCT yarn feeding device 1 equilibrium " constant basis " equal the velocity amplitude SPV that sets in unit 34.Therefore, this method can make DCT device 1 with " constant tension force " and " constant amount " feeding stretch yarn.

Obviously, in order to obtain a yarn pretension value that changes according to processing stand, velocity amplitude SPV can change according to the job step that weaving loom is realized.

Obviously, DTC device 1 can easily hold device 30 of the present invention, therefore, advantageously generates a single unit system that is used in " constant-tension and quantity " yarn feeding.

Equally, obviously, pre-yarn feeding driver or wheel apparatus 31 can be to be different from above-mentioned form: for example for known brake apparatus, be installed to pulley or roller on the axle of driver 33 with key directly or indirectly, feed in advance by them and to make that more or less yarn is fed, so that force DCT device 1 with " constant-tension and quantity " feeding stretch yarn.

Above only described the part of possibility solution: to those skilled in the art, above can expect different structures and/or solution by reading, these are all in protection scope of the present invention.

Rely on the present invention, can obtain a kind of device that is used for stretch yarn is fed into weaving loom, this device can act on this yarn before yarn arrives weaving loom, make the resiliency characteristics of yarn not influence the production of textiles or can't see the production that influences textiles.In other words, device of the present invention has a compensating element,, this element be used for stretch yarn be used for this yarn cooperated with the well known device of constant-tension and quantity yarn feeding before the variation of compensation stretch yarn diameter and production.This compensating element, is taken the described yarn of speed effect away according to the yarn of described device, make Yarn braking or increase the speed (promptly by taking off more yarn from the yarn tube) of its unwinding from the yarn tube, what the yarn of described device took that speed is in response to weaving loom away uses the yarn request.The braking of described yarn or acceleration are at the well known device that is used for constant-tension and quantity yarn feeding, this braking or acceleration have prevented that described yarn from leaving the variation (even under constant-tension) of described when device yarn physics elongation and diametrically, such variation can cause the bad outward appearance of textiles produced: when not having described compensating element,, when described yarn combines with other one yarn that does not have a change in physical properties, will cause and to see difference elongation and the vary in diameter that draws yarn in the textiles.If be provided with above-mentioned compensating element,, then above-mentioned defective can not take place, and this can make the yarn of crossing through described yarn feeding device " processing " look just to there not being flexible yarn the same.And described compensating element, can make yarn sponge its elongation and diameter variation, and this variation produced from yarn tube unwinding following time before yarn enters into described yarn feeding device; In other words, yarn turns back to the pretensioned state when its tension force is assessed by the DTC device again.

Claims

1, a kind of device (1) that is used to control stretch yarn (11) feeding, this stretch yarn has known elasticity, and withdraw from yarn tube (B) and to get off to be fed into weaving loom (10), described yarn has intrinsic elasticity and is fed in the described weaving loom with intrinsic speed, be provided with and be used to detect the device (18) of yarn (11) tension force and the device (3 that is used to measure and change yarn speed, 12), the device (3 of device of described detection yarn tension (18) and described measurement and change yarn speed, 12) all be connected to the device (20) that is used to control and regulate described tension force and speed parameter, described control and the device (20) of regulating described tension force and speed parameter are measured the value that is fed into two parameters in the process of weaving loom at yarn (11) continuously, it is characterized in that, also comprise compensation arrangement (30), its compensation is withdrawn the stretch yarn (11) that gets off with device that is used to detect yarn tension (18) and described measurement with change the device (3 of yarn speed from yarn tube (B), 12) cooperate dimensional characteristic before, thereby during the whole production of textiles, can make yarn be fed in the described weaving loom (10) with constant dimensional characteristic.

2, device as claimed in claim 1 is characterized in that, described weaving loom (10) is knitting machine, hosiery machine or bobbin winder.

3, device as claimed in claim 1, it is characterized in that, compensation arrangement (30) comprises an element (31), this element contacts with yarn, and change yarn from yarn tube (B) to the device that is used to detect yarn tension (18) with the device (3 of described measurement and change yarn speed, 12) the yarn translational speed during, described element are connected on the driver (33), and this driver can make element (31) act on yarn.

4, device as claimed in claim 3 is characterized in that, element (31) is a wheel apparatus.

5, device as claimed in claim 3 is characterized in that, element (31) is a Yarn braking element.

6, device as claimed in claim 3 is characterized in that, driver (33) is electric notor or air motor.

As claim 3 or 5 described devices, it is characterized in that 7, element (31) links to each other with the output shaft of the electric notor that constitutes driver (33).

8, device as claimed in claim 3, it is characterized in that, driver (33) receives the instruction of control module (34) and is subjected to the control of this control module (34), this control module (34) and described control and the device (20) of regulating described tension force and speed parameter cooperate, described control and the device (20) of regulating described tension force and speed parameter and described control module (34) exchange are fed into the information of the speed in the weaving loom (10) about yarn (11), the element (31) that can make described control module (34) that driver (33) is acted on to contact with yarn (11), thereby change yarn speed, otherwise or, the device (20) that can make described control and regulate described tension force and speed parameter changes according to the yarn speed of being implemented by described element (31) to be regulated yarn (11) and is fed into speed in the weaving loom (10), described control module (34), described driver (33), element (31) by described driver (33) control, described control and regulate the device (20) of described tension force and speed parameter, detect the device (18) of yarn tension, and described measurement and the device that changes yarn speed form a control loop, with constant-tension and the constant speed feeding that realizes the weaving loom stretch yarn.

9, device as claimed in claim 8 is characterized in that, described control and the device (20) of regulating described tension force and speed parameter cooperate with the device that is used to control weaving loom work (27).

10, device as claimed in claim 1 is characterized in that, the device (3,12) of checkout gear (18) and described measurement and change yarn speed all links to each other the main body (2) of this support constituent apparatus (1) with same support.

11, a kind of method, be used for stretch yarn is fed into weaving loom to obtain the textiles of each several part constant quality, described method comprises that measurement is from (B) unwinding of yarn tube and be fed into tension force and the speed or the quantity of the yarn (11) the weaving loom, described method is characterised in that, after yarn tube (B) unwinding is got off, yarn (11) is acted on and changes it is transported to speed in the weaving loom, described some place that acts on the upstream that is positioned at described yarn speed and tonometry position on the yarn path implements, the speed of yarn is measured in the downstream of the described point on the yarn path continuously simultaneously, and acts on described yarn to keep the size stability of the yarn (11) that feeds weaving loom on measured yarn speed basis.

12, method as claimed in claim 11 is characterized in that, described effect to yarn (11) is braking action.

13, method as claimed in claim 11 is characterized in that, described effect to yarn (11) is acceleration.

14, method as claimed in claim 11 is characterized in that, described size refers to diameter and elongation.