CN2351455Y - Special weft storing device for loom - Google Patents

Abstract

The utility model relates to a special weft storing device for looms, which is composed of a transmission mechanism winding yarn and regulating speeds by frequency variation, a yarn storing barrel storing and drawing yarn, a controller detecting elements and carrying out fuzzy identification to detecting signals to identify yarn drawing speeds, etc. Through repeated fuzzy identification to the yarn drawing speeds by the controller, a current type SPWM is adopted for speed regulation by frequency variation according to v-f curve characteristics to regulate the winding speed of the transmission mechanism for a corresponding right amount to ensure that balance is achieved between the yarn feeding amount and the yarn consumption. The utility model has with advantages of simple structure and low cost overcomes the defects that detecting elements fail, signals are not transmitted to targets, and the yarn feed is disordered and avoids the phenomenon of yarn evacuation or that yarn is fed in excess.

Description

The special-purpose weft accumulator of loom

The utility model relates to the weft accumulator of loom special use.

According to the requirement of loom to weft accumulator, its ideal state is: the amount of thread that stores on the weft accumulator storage surface, cooperate in the process of loom operation at weft accumulator, should carry out in time replenishing according to the consumption of loom to yarn, accomplish that yarn consumption is additional soon fast, consume replenish slowly slow, and should not occur that yarn is found time, excess is towards the yarn phenomenon.Loom is reflected to the consumption of yarn in running and is called drawn work on the weft accumulator, and the speed of its consumption has determined the speed of spinning velocity.And weft accumulator is wanted in time according to loom the consumption of yarn to be carried out suitably replenishing, and must adjust winding speed according to spinning velocity, finally makes winding speed and average consumption reach balance.A kind of detecting element of the prior art, its structure is such: this detecting element is fixed on the outside of yarn storage cylinder, and the one end stretches into the axial notch of this yarn storage cylinder under the elastic force effect of spring, this detecting element itself has the contact, be used to produce a signal with the auxiliary contact co-operating, when the storage yarn is increased to certain value, detecting element generation deflection, thereby produce a signal, to stop the further increase of storage yarn.The defective of this technology is: (1) detecting element is realized the location of detecting element with a spring and is resetted, because detecting element in use need experience swing many times, oscillatory forces acts on this spring, cause this spring very easily tired and fracture takes place or elongate phenomenon, detection system is broken down or detection signal transmits not in placely, finally make for yarn to be difficult to carry out or confusion takes place; (2) to the bad adaptability of yarn, as run into thicker yarn, the skewness magnitude level of detecting element is increased, contact that detecting element itself has and the actuating length between the auxiliary contact increase, when yarn was extracted, the detecting element reset speed did not catch up with the needs of loom, and yarn is found time.Also have a kind of detecting element to be installed in the yarn storage cylinder, promptly in the groove that is lower than the yarn storage cylinder surface.This detecting element is that a plastics magnetic flux is crossed the variation that a leverage obtains magnetic field and realized its displacement, promptly owing to extraction and the supply of yarn on the yarn storage cylinder surface, a surface of stretching out yarn storage cylinder, another has the resiliency of overcoming tendency concordant with the yarn storage cylinder surface, alternately move, give sensing element these two signal feedback, send yarn to finish.Though this improvement structure has solved first kind of existing problem of detecting element structure, but it also has an obvious defects, after the operation of this detecting element with loom experience certain hour, a large amount of filigree or colorful clothes of shutting down from yarn accumulate in the groove, this detecting element is subjected to adhering to of filigree or colorful clothes, stop up lever transmission mechanism, catching phenomenon easily takes place, make the signal transmission that difficulty take place, must often clear up the generation that just can prevent this phenomenon, and the plastics magnetic pole is easy to wear, so neither a kind of perfect scheme.

The purpose of this utility model is to overcome the defective of prior art and provides a kind of and can guarantee that the yarn on the storage surface carries out suitably replenishing according to the consumption of yarn in the loom running, and accomplishing not occur yarn finds time, excess do not occur towards yarn, adjust winding speed with spinning velocity, finally make winding speed and average consumption reach the special-purpose weft accumulator of loom of balance.

By above purpose scheme of the present utility model be: comprise the transmission mechanism that also can realize frequency control in order to the coiling yarn; One in order to store the yarn storage cylinder of yarn and yarn circle drawn work; Be fixed on the yarn storage cylinder outside and be located at detecting element between housing, the support; And the controller that detection signal is carried out the fuzzy recognition spinning velocity, described detecting element comprises and is connected the connector that can swing on the alignment pin, be fixed with along yarn storage cylinder surface axial distribution on the connector and point to the feeler of storage surface, the connector upper fixed has the sensing magnetic patch, inner walls to the inductive sensing magnetic patch is provided with the signal receiving key that links to each other with controller, it is characterized in that described detecting element is that a phase magnet and that is fixed on the connector side is fixed on the adsorbent in the support.

One side of detecting element is provided with the reseting leaf of a quickening feeler reset speed.

Advantage of the present utility model has been to overcome prior art and has utilized spring to realize the location of detecting element and reset the spring fatigue that brought and the detection system that causes breaks down, detection signal transmits not in place, for a series of defectives such as yarn difficulty or confusions, thereby make detecting element correctly detect spinning velocity, through repeatedly fuzzy recognition and adjustment repeatedly, yarn on the assurance storage surface carries out suitably replenishing according to the consumption of yarn in the loom running, avoid yarn find time or excess towards the yarn phenomenon, adjust winding speed with spinning velocity, make winding speed and average consumption reach the purpose of balance; Accelerate the setting of the spring leaf of connector reset speed, overcome defective,, can make the detecting element reset speed catch up with the needs of loom equally even run into thicker yarn to the yarn bad adaptability.The design also has advantages such as simple in structure, cheap.

Description of drawings.

Fig. 1 is the utility model overall structure schematic diagram.

Fig. 2 is the utility model detecting element structural representation.

Fig. 3 changes the V-f curve map for the winding speed adjustment.

Below will remake the embodiment of the utility model and elaborate according to above-mentioned accompanying drawing.

The special-purpose weft accumulator of loom (referring to Fig. 1-3) comprises the transmission mechanism that also can realize frequency control in order to coiling yarn (9); This transmission mechanism is made up of a threephase asynchronous (11) that is located at housing (13) inner chamber, motor adopts current mode SPWM frequency control, adopt current mode SPWM frequency control can overcome deficiency bigger than normal with the harmonic wave of voltage-type SPWM frequency control when low frequency turns round, that noise is bigger than normal, thereby running noises is little relatively, adjusts winding speed by adjusting motor speed.

There is one in order to store the yarn storage cylinder (7) of yarn and yarn circle drawn work, yarn (9) is supplied with by a bobbin (8), through the winder (1) of leading-in end (10) for the transmission mechanism that helps constitute by motor, yarn is wound on when motor moves equably on the storage surface (2) of yarn storage cylinder, and carries out coil drawn work by output (6) and freely unload and take off.

Being fixed on the detecting element that yarn storage cylinder (7) outside is located between housing (13) and the support (21) is fixed on the support by alignment pin (20), be connected the connector (15) that to swing on the alignment pin, be fixed with along yarn storage cylinder surface axial distribution on the connector and point to the feeler of storage surface, feeler has three, a head that is contained in storage surface is head feeler (5), all the other are contained in the middle part feeler (4) and the rear-mounted afterbody feeler (3) at the middle part of storage surface, certain intervals is arranged each other, be used for detecting the motion of yarn, as long as the yarn circle is twitched at its top action is just arranged, when the loom operation acts on drawn work, feeler from the head detects drawn work and moves the middle part feeler and detect drawn work action and end, write down the average speed of drawn work in fact, be the function of time of spinning velocity, and the yarn number of turns through self do not reacted.The cooperation of adding the feeler of storage surface afterbody detects, just can according to the yarn situation detect spinning velocity and when broken yarn or yarn are found time self-stopping realize protecting.Connector (15) upper fixed has sensing magnetic patch (17), be used for reflecting the movement locus of feeler, inner walls to the inductive sensing magnetic patch is provided with the signal receiving key (16) that links to each other with controller (12) lead, be used for receiving the reaction signal of this feeler that transmits through the sensing magnetic patch, be fixed on the phase magnet (19) of connector side and be fixed on location and the reset response that plays whole detecting element in the support by adsorbent (18) mating reaction of magnetic material system.

One side of detecting element is provided with the reseting leaf (14) of a quickening feeler reset speed, and be fixed on the left side of connector on the support by fixed screw, be vertical, be the thick line reseting leaf, when loom uses than coarse yarn, lean on mutually with this vertical reseting leaf and produce an elastic force because detecting element produces bigger skew, reach the purpose that resets fast, make reset speed can catch up with the needs of loom, satisfy the requirement of storage yarn.

The controller (12) that detection signal is carried out the fuzzy recognition spinning velocity is fixed on housing (13) inner chamber, controller is according to the given winding speed of spinning velocity, debate knowledge and adjust through repeatedly fuzzy repeatedly, finally reach winding speed and satisfy replenishing in right amount of yarn consumption amount.

Be wound on equably when yarn on the storage surface of yarn storage cylinder, head feeler, middle part feeler, the afterbody feeler lifts, and weft accumulator is thought full yarn, and motor is in stopped status.When loom operation drawn work; at first be that the head feeler freely falls; controller is reacted; that carries out spinning velocity immediately fuzzyly debates knowledge; confirm corresponding winding speed, send instruction, motor starts automatically; start by the winding speed of adjusting voluntarily; several times fuzzy debated knowledge repeatedly, and winding speed is adjusted to spinning velocity and balanced each other the most at last, carries out automatically the consumption appropriate supplement yarn according to yarn; and accomplish to take out soon fast benefit; slowly take out slowly and mend, in case loom is shut down, drawn work also stops; and the yarn of continue reeling is when reaching full amount, and motor is with regard to self-stopping.If in running, to find time because of broken yarn or yarn, the afterbody feeler freely falls, and confirms as yarn and finds time, and motor is self-stopping immediately, realizes protection.

The adjustment of winding speed is by its performance of v-f curve standard.See Fig. 3, v surface spinning velocity, f represents frequency converter frequency.

Claims (3)

1. the special-purpose weft accumulator of loom comprises the transmission mechanism that also can realize frequency control in order to coiling yarn (9); One in order to store the yarn storage cylinder (7) of yarn and yarn circle drawn work; Be fixed on the yarn storage cylinder outside and be located at detecting element between housing (13) and the support (21), and the controller (12) that detection signal is carried out the fuzzy recognition spinning velocity, described detecting element comprises and is connected the connector (15) that can swing on the alignment pin (20), be fixed with along yarn storage cylinder surface axial distribution on the connector and point to the feeler of storage surface, the connector upper fixed has sensing magnetic patch (17), inner walls to the inductive sensing magnetic patch is provided with the signal receiving key (16) that links to each other with controller, it is characterized in that described detecting element is that a phase magnet (19) and that is fixed on connector (15) side is fixed on the adsorbent (18) in the support (21).

2. the special-purpose weft accumulator of loom as claimed in claim 1 is characterized in that a side of described detecting element is provided with the reseting leaf (14) of a quickening feeler reset speed.

3. the special-purpose weft accumulator of loom as claimed in claim 1 or 2, the feeler that it is characterized in that described detection drawn work motion has three, a head feeler (5) that is contained in the storage surface head, middle part feeler (4) and rear-mounted afterbody feeler (3) that all the other are contained in the storage surface middle part have certain intervals each other.

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