CN2890112Y - Weft bar prevention device of rapier loom - Google Patents

Abstract

A weft bar prevention device of rapier loom comprises a moment motor, a seeking weft box and a hatch mechanism driven by the moment motor, a let-off mechanism driven by the moment motor and through transmission elements, a winding mechanism and a winding roller. The utility model is characterized in that: the winding roller connects with power export of the let-off mechanism by the winding mechanism, a winding transmission system and a clutch. The utility model compared with prior art, has the advantages of effectively preventing weft bar, eliminating most of the weft bar under the situation of using machine to let-off and machine to wind.

Description

A kind of Rapier looms prevents the device of weft bar

Technical field:

The utility model relates to Rapier looms fell reduction resetting structure, belongs to device and control method that Rapier looms prevents to produce weft bar.

Background technology:

In the prior art, some has the continuous warp let-off of mechanical type, mechanical type batches continuously with the Rapier looms of opening interlock behind staplings, the weft finding box that is driven by torque motor drives the warp let-off, batches with shedding mechanism and reverse a few synchronously according to the latitude program of setting of seeking, and perhaps reversing, a few hocket with positive revolution circle.Weft finding box is whenever goed around, fell promptly moves the corresponding weft spacings of filling density value, just fell is moved behind machine, perhaps to moving behind the machine and before machine, moving the several that hockets, the position that fell is adjusted to not produce weft bar (loom revolution one is quoted into a weft yarn, the every variant weft bar that is of weft yarn arrangement spacing).Method prevents weft bar whereby.But, owing to the reason that produces weft bar is very complicated, such as the creep meeting of the length of down time, yarn, textile system because of reasons such as all multifactor variations such as raw material and Densities, and make the amount of movement of reduction cloth fell indefinite, though, still have many weft bars to eliminate so adopt this way can eliminate some weft bars.

Summary of the invention:

The purpose of this utility model is to overcome the deficiency of above-mentioned technology, provides a kind of and has prevented the device of weft bar at Rapier looms weft bar, that most weft bars can both be eliminated that effectively prevents that uses the mechanical warp let-off, machinery to batch under the condition.

The utility model is to realize like this, weft finding box that comprises torque motor, drives by torque motor and shedding mechanism, the warp-feeding mechanism, the spooler that drive by torque motor by driving element, its special feature be spooler by batch transmission system, clutch links to each other with the power output of warp-feeding mechanism.During work; when loom normally moves; make the clutch adhesive by electric control gear; warp-feeding mechanism; spooler synchronous operation; weave cotton cloth normally; when phenomenons such as parallel broken string occur causing shutting down; make clutch on-off by electric control gear; drive shedding mechanism by torque motor; warp-feeding mechanism and spooler be forward or reverse simultaneously; the angle value that adjacent weft spacing and the deviation of fabric standard filling density come setpoint clutch to separate in the weft finding box revolution when weft bar takes place; make fell corresponding pause when mobile, the position when making fell reset into staplings then so just can prevent weft bar.

The utility model has been owing to adopted clutch, makes like this to the utlity model has using the mechanical warp let-off, machinery to batch effectively to prevent advantage weft bar, that most weft bars can both be eliminated under the condition.

Description of drawings:

Fig. 1 is a structural representation of the present utility model

The specific embodiment:

Now in conjunction with the accompanying drawings and embodiments the utility model is described in further detail:

As shown in the figure, weft finding box 2 that the utility model comprises torque motor 1, driven by torque motor 1 and shedding mechanism 3, the warp-feeding mechanism 5 that drives by torque motor 1 by driving element 4, spooler 7, the work beam 8 that is connected with spooler 7 power, its special feature be work beam 8 by spooler 7, batch transmission system 12, clutch 6 and export with the power of warp-feeding mechanism 5 and link to each other.Torque motor 1 and clutch 6 are by electric cabinet 10 controls.The angle value that adjacent weft spacing and the deviation of fabric standard filling density come setpoint clutch to separate in the weft finding box revolution when weft bar takes place makes fell 9 corresponding pause when mobile, the position when making fell 9 reset into staplings then.For the accuracy of accurate control work beam 8 rotations, and make things convenient for programme-control, weft finding box 2 is provided with rotary encoder 11.By speed ratio transmission in 1: 1, therefore, weft finding box 2 rotated a circle to rotary encoder 11 by weft finding box 2, and rotary encoder 11 also rotates a circle.So the rotational angle of weft finding box can obtain the program of setting is carried out by rotary encoder.

Claims (2)

1, a kind of Rapier looms prevents the device of weft bar, weft finding box that comprises torque motor, drives by torque motor and shedding mechanism, by driving element by warp-feeding mechanism, spooler and work beam that torque motor drives, it is characterized in that work beam by spooler, batch transmission system, clutch links to each other with the power output of warp-feeding mechanism.

2, Rapier looms according to claim 1 prevents the device of weft bar, it is characterized in that being that weft finding box is provided with rotary encoder.

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