CN200967867Y

CN200967867Y - Control mechanism for loom warp tension

Info

Publication number: CN200967867Y
Application number: CN 200620068112
Authority: CN
Inventors: 梁津华; 刘喜明; 伍小毅
Original assignee: FOSHAN LIJIA TEXTILE MACHINERY Co Ltd
Current assignee: FOSHAN LIJIA TEXTILE MACHINERY Co Ltd
Priority date: 2006-11-20
Filing date: 2006-11-20
Publication date: 2007-10-31
Anticipated expiration: 2016-11-20

Abstract

The utility model provides a control mechanism to control loom warp tension, and is to eliminate the problems of prior art that the electrical signal requires to be converted into the digital signals for output through analogue quantity; the error is large; the interference free feature is poor; the checkout precision is not enough; and product quality is directly impacted. The essential of the technical proposal is as follows: the utility model is characterized in that the utility model comprises a fixed back rest, an oscillating back rest, a pendulum bar of the back rest, a long connecting rod, a short connecting rod, a rotary encoder and a compression spring; the fixed back rest, the oscillating back rest and the rotary encoder are arranged on a loom frame; both ends of the pendulum bar of the back rest are articulated with the axle center of the fixed back rest and the oscillating back rest; one end of the long connecting rod is articulated with an articulation position of the pendulum bar of the back rest on the oscillating back rest; the other end of the long connecting rod is articulated with one end of the short connecting rod; the other end of the short connecting rod is fixed with the rotary encoder; one end of the compression spring is connected with the pendulum bar of the back rest; and the other end of the compression spring is connected with the loom frame.

Description

A kind of controlling organization of warp on loom tension force

Technical field;

The utility model belongs to the control device of textile machine, particularly the controlling organization of loom let-off tension force.Be applicable to Rapier looms.

Background technology:

The present Rapier looms that generally uses, it is to be finished by the warp tension controlling organization that its warp tension is regulated control.The warp tension controlling organization is generally by fixedly the back rest, oscillating back rest, back rest fork, tension spring, two iron plates, two inductance type transducers constitute.Use to be taken in warp thread when fixedly the back rest is walked around oscillating back rest, and warp tension forces the rotation of back rest fork, and tension spring is compressed.By changing the spring force of tension spring, can regulate the warp thread warp tension, and back rest fork is positioned on the normal equilbrium position.At weaving process, when warp tension absolute presupposition value increased or reduce, back rest fork was offset from the equilbrium position, and two iron plates that are fixed on the back rest fork are made change in location with respect to inductance type transducer.When an iron plate hid an inductive displacement transducer, this sensor sent signal, drove the let-off motor revolution by electric-control system, emitted warp thread; When warp tension was excessive, another iron plate hid another inductance type transducer, made caused by loom stop thereby form the warp tension protection, and when tension force was too small, last iron plate also can hide back one inductance type transducer, makes caused by loom stop.Back rest fork changes according to warp tension, by the relative position of continuous adjustment iron plate and inductance type transducer, when making let-off motor and emit warp thread, the time and park, allow back rest fork on the equilbrium position, do all the time to move in a small amount, make the warp tension all-the-time stable in default warp tension scope.The shortcoming of the controlling organization of this warp tension is: owing to adopt the inductance type transducer structure, not only internal structure complexity, and the signal of telecommunication need convert data signal output to by analog quantity, error is bigger, poor anti jamming capability detects accurately inadequately, directly influences product quality.

Summary of the invention

The defective that the signal of telecommunication that prior art exists need convert that data signal output, error are big to by analog quantity in order to overcome, poor anti jamming capability, detection accurately, directly influence product quality inadequately, the purpose of this utility model provides a kind of controlling organization of improved warp on loom tension force, can overcome the defective of prior art.

The technical scheme that its technical problem that solves the utility model adopts: a kind of controlling organization of warp on loom tension force, it is characterized in that comprising the fixedly back rest, oscillating back rest, back rest fork, long connecting rod, short connecting rod, rotary encoder, the compression spring, the fixing back rest wherein, oscillating back rest and rotary encoder are installed on the loom frame, two of back rest forks are hinged on the fixedly back rest respectively, on the axle center of oscillating back rest, one of long connecting rod is hinged with the back rest fork hinged place on the oscillating back rest, other end and short connecting rod one is hinged, the other end and the rotary encoder of short connecting rod are fixed, and one on compression spring connects back rest fork, the other end connects loom frame.

Above-mentioned what is called is installed or is connected in loom frame, can be directly to install or be connected in loom frame, also can install or be connected in loom frame indirectly by other parts.

The beneficial effects of the utility model are: owing to adopt rotary encoder as displacement transducer, and the structure that is complementary with it constitutes the controlling organization of warp on loom tension force, rotary encoder is a light harvesting, machine, power technology is in the advanced person's of one displacement transducer, rotational displacement directly can be changed into data signal output, not needing through analog-signal transitions is this process of data signal, so the data signal of its output is accurate, resolution capability is strong, be not subject to external interference, stable performance, reliably, be quick on the draw, its internal structure is simple, cost is low, can effectively improve the quality of products.

Description of drawings

Below in conjunction with accompanying drawing and example the utility model is further specified:

Fig. 1 is the schematic diagram of an embodiment of the utility model.

Among the figure: 1, the fixing back rest; 2, oscillating back rest; 3, back rest fork; 4, long connecting rod; 5, short connecting rod; 6, rotary encoder; 7, compression spring; 8, the back rest fork hinged place on the oscillating back rest; 9, rotary coder shaft; 10, warp thread.

The specific embodiment

With reference to Fig. 1, the controlling organization of this warp on loom tension force, it is characterized in that comprising the fixedly back rest 1, oscillating back rest 2, back rest fork 3, long connecting rod 4, short connecting rod 5, rotary encoder 6, compression spring 7, the fixing back rest 1 wherein, oscillating back rest 2 and rotary encoder 6 are installed on the loom frame, 3 two of back rest forks are hinged on the fixedly back rest 1 respectively, on the axle center of oscillating

back rest

2,4 one of long connecting rods are hinged with the back rest fork hinged place 8 on the oscillating back rest 2, other end and short connecting rod 5 one is hinged, the other end of short connecting rod 5 and rotary coder shaft 9 are fixing, and 7 one on compression spring connects back rest fork 3, the other end connects loom frame.

Weaving process, warp thread 10 are when fixedly the back rest 1 is walked around oscillating back rest 2, and warp thread 10 tension force force back rest fork 3 to rotate, and compression spring 7 is compressed, and be in a normal equilbrium position.When warp thread 10 tension force change, the displacement of back rest fork 3 is by back rest fork 3, long connecting rod 4, short connecting rod 5, become the rotational displacement of rotary encoder 6, rotary encoder 6 directly changes rotational displacement into data signal, behind the data signal input Programmable Logic Controller (PLC), automatically regulate the rotating speed of let-off motor, allow back rest fork in the place, equilbrium position, do swing in a small amount all the time, make warp thread warp tension all-the-time stable in default warp tension scope.

Claims

A kind of controlling organization of warp on loom tension force, it is characterized in that comprising the fixedly back rest, oscillating back rest, back rest fork, long connecting rod, short connecting rod, rotary encoder, the compression spring, the fixing back rest wherein, oscillating back rest and rotary encoder are installed on the loom frame, two of back rest forks are hinged on the fixedly back rest respectively, on the axle center of oscillating back rest, one of long connecting rod is hinged with the back rest fork hinged place on the oscillating back rest, other end and short connecting rod one is hinged, the other end and the rotary encoder of short connecting rod are fixed, and one on compression spring connects back rest fork, the other end connects loom frame.