CN106835458A - A Low Inertia Back Rest System of Loom - Google Patents

Abstract

A low-inertia backrest system for a loom, the backrest system comprising: a fixed backrest and a support frame connected by bolts, and a long slot is provided at the joint between the fixed backrest and the support frame; a curved leaf spring and a straight plate The spring has several parts and is distributed and fixed on the supporting frame through bolts; the movable back beam runs through the entire width of the loom, and the movable back beam is fixedly connected with the curved leaf spring and the straight leaf spring through bolts; a group of moving mechanisms passes through The pads and bolts are fixed on the support frame, the number of the moving mechanism is the same as that of the curved leaf spring, and the position of the moving mechanism on the support frame corresponds to the position of the curved leaf spring and the straight leaf spring. The mechanism moves and contacts in the direction of the curved leaf spring and the straight leaf spring. After controlling the movement amount of the moving mechanism, it is used to adjust the deformation of the movable back beam of the leaf spring; Reach the heald frame; after the beam swings after the activity, the tension change caused by the opening is relieved.

Description

A Low Inertia Back Rest System of Loom

technical field

The invention relates to a low-inertia back rest system of a loom, which belongs to weaving equipment and weaving technology in the field of textile machinery.

Background technique

The backrest system in the loom is an important device to control and detect the tension of the warp yarn. Under the action of various movements of the loom, the response of the backrest not only directly affects the dynamic tension of the warp yarn, but also is closely related to the dynamic characteristics of the warp yarn itself. At present, the loom back rest system mainly consists of two rollers, one of which is a fixed back rest and the other is a movable back rest. Due to the heavy weight of the back beam structure, a large inertial force is generated during the weaving process when the loom runs at a high speed, so it cannot respond in time to changes in the warp tension, which not only affects the weaving efficiency of the loom At the same time, it also affects the effect of the back rest on relieving warp tension changes and affects fabric quality; in order to better alleviate warp tension changes, improve fabric quality and improve weaving efficiency, it is hoped that the stiffness of the back rest can be flexibly adjusted to adapt to different warp tensions.

Existing back beam system, as shown in Fig. 1, 2: warp beam 5 and frame 6 are hinged with bearing; Fixed back beam 1 and frame 6 are hinged with bearing; The other end is hinged with the spring bar 7; the movable back beam 3 is hinged with the back beam swing arm 2 through the bearing; the spring bar 7 is connected with the pile head 8 in the form of a sliding pair; After unwinding, the fixed back beam 1 and the movable back beam 3 reach the heald frame and participate in weaving; the movable back beam 3 swings around point O under the action of warp tension to alleviate the tension change caused by the opening.

The above-mentioned back rest system has the following disadvantages:

One is that the movable back beam is a circular roller. When the width of the loom is wider, the dead weight and moment of inertia of the movable back beam are larger, the response speed is slow, and the effect on the warp tension change caused by the opening is poor;

The second is that when the door width is wide, due to the limitation of the space position, the movable back beam and the fixed back beam cannot meet the rigidity requirements. Therefore, the deformation of the back beam of the wide-width loom under the action of warp tension is relatively large.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a low-inertia backrest system for a loom that has a reasonable and compact structure, flexible adjustment of the stiffness of the backrest, and improved weaving efficiency and fabric quality.

The object of the present invention is accomplished through the following technical solutions, a low-inertia backrest system for a loom, the backrest system comprising: a fixed backrest and a support frame connected by bolts, and the joint between the fixed backrest and the support frame There are long slots; the curved leaf spring and the straight leaf spring have several parts and are fixed on the support frame through bolts; the movable back beam runs through the entire width of the loom, and the movable back beam is connected with the curved leaf spring and the straight leaf spring. The leaf springs are fixedly connected together by bolts; a set of moving mechanisms is fixed on the support frame through pads and bolts, the number of the moving mechanisms is the same as that of the curved leaf springs, and the position of the moving mechanisms on the support frame is the same as that of the curved plate The positions of the spring and the straight leaf spring correspond, and the moving mechanism moves and contacts the curved leaf spring and the straight leaf spring, and is used to adjust the deformation of the beam after the leaf spring moves after controlling the amount of movement of the moving mechanism; After the warp yarn is unwound from the warp beam, it reaches the heald frame through the fixed back beam and the movable back beam to participate in weaving; the movable back beam swings under the action of warp tension to alleviate the tension change caused by the shedding.

As a preference: the moving mechanism is a cylinder, the piston rod in the cylinder is pushed out and contacts the straight leaf spring under the action of high-pressure air, and the deformation of the beam after the leaf spring is adjusted by controlling the high-pressure air pressure in the cylinder Quantity; the movable rear beam is a semi-circular leaf spring structure and constitutes the movable rear beam of the leaf spring; the straight leaf spring is stacked and installed in multiple pieces to increase the rigidity of the movable rear beam and reduce the deformation of the movable rear beam.

As a preference: the moving mechanism is a gas spring or a buffer medium;

The buffer medium is clamped by the buffer medium support frame, and the buffer medium support frame is fixed on the support frame through pads and bolts. The number of buffer medium is the same as that of the curved leaf spring, and the position on the support frame is the same as that of the curved leaf spring. Corresponding to the position of the straight leaf spring, there is a long groove in the buffer support frame to adjust the distance from the buffer medium to the curved leaf spring and the straight leaf spring;

The movable back beam is a semi-circular leaf spring structure and constitutes a leaf spring movable back beam; the straight leaf springs are stacked and installed in multiple pieces to increase the rigidity of the movable back beam and reduce the deformation of the movable back beam.

The present invention has the following structural features and advantages:

First, the movable back beam is a semi-circular leaf spring. When the width of the loom is wide and the speed of the machine is high, the weight and moment of inertia of the movable back beam are small, the response speed is fast, and the effect on the warp tension change caused by the opening is better;

The second is to facilitate the adjustment of the positional relationship between the fixed back rest and the movable back rest; cylinders, gas springs or buffer bodies make the stiffness of the back rest flexibly adjustable to suit different warp tensions;

The third is that the straight leaf springs can be stacked and installed in multiple pieces to increase the stiffness of the movable rear beam and reduce the deformation of the movable rear beam.

By adjusting the position of the fixed back beam relative to the support frame, the change of the wrap angle size of the warp on the movable back beam is realized.

Description of drawings

Fig. 1 is a structural schematic diagram of the prior art.

Fig. 2 A partial schematic diagram in Fig. 1.

Fig. 3 is a structural schematic diagram of the present invention.

Fig. 4 is a partial schematic view along the direction A of Fig. 3 .

Fig. 5 is a schematic diagram of another structure of the present invention.

Fig. 6 is another structural schematic diagram of the present invention.

detailed description

The present invention will be described in detail below in conjunction with accompanying drawing: Fig. 3, shown in 4, a kind of low inertia backrest system of loom of the present invention, described backrest system comprises: a fixed backrest 57 and support frame 56 and The bolts are fixedly connected, and the connection between the fixed back beam 57 and the support frame 56 is provided with a long groove; the curved leaf spring 52 and the straight leaf spring 53 have several parts and are distributed and fixed on the support frame 56 by bolts b; the movable back beam 51 runs through The whole width of the loom, and the movable rear beam 51 is fixedly connected with the curved leaf spring 52 and the straight leaf spring 53 through bolts a; a set of moving mechanisms is fixed on the support frame 57 through pads 55 and bolts. The quantity of the moving mechanism is the same as that of the curved leaf spring 52, and the position of the moving mechanism on the support frame 56 corresponds to the position of the curved leaf spring 52 and the straight leaf spring 53, and the moving mechanism is to the curved leaf spring 52. Move and contact with the straight leaf spring 53, after controlling the amount of movement of the moving mechanism, it is used to adjust the deformation of the leaf spring movable back beam; The frame participates in weaving; the movable back beam 51 swings under the action of the warp tension to alleviate the tension change caused by the opening.

As shown in the figure, the moving mechanism is a cylinder 54. The piston rod in the cylinder 54 is pushed out and contacts the straight leaf spring 53 under the action of high-pressure air. By controlling the high-pressure air pressure in the cylinder, the plate can be adjusted. The amount of deformation of the movable rear beam of the spring; the movable rear beam is a semicircular leaf spring structure and constitutes the movable rear beam 51 of the leaf spring; the straight leaf spring 53 is installed in a multi-piece stack to increase the rigidity of the movable rear beam and reduce the activity Deformation of the rear beam.

The movable back beam is a semi-circular leaf spring structure and constitutes the leaf spring movable back beam 51; the straight leaf spring 53 is stacked and installed in multiple pieces to increase the stiffness of the movable back beam and reduce the deformation of the movable back beam.

As shown in Figure 5, the moving mechanism is a gas spring 64;

As shown in Fig. 6, the described moving mechanism is a buffer medium 74; the buffer medium is clamped by the buffer medium support frame 61, and the buffer medium support frame 61 is fixed on the support frame 57 by spacers 55 and bolts, and the buffer medium 74 The number is the same as that of the curved leaf spring 52, and the position on the support frame 56 corresponds to the position of the curved leaf spring 52 and the straight leaf spring 53. The buffer support frame is provided with a long groove to adjust the buffer medium to the curved leaf spring 52 And the distance of the straight leaf spring 53.

Claims (3)

1. the low inertia back rest of a kind of loom, it is characterised in that described back rest includes：One fixes the back rest（57）With Support frame（56）It is fixedly connected with bolt, and the fixed back rest（57）With support frame（56）Junction be provided with elongated slot；Bending leaf spring （52）With straight leaf spring（53）There are some parts and by bolt（b）Distribution is fixed on support frame（56）On；Movable back beam（51） Through the whole door width of loom, and the movable back beam（51）With bending leaf spring（52）With straight leaf spring（53）Pass through bolt together （a）It is fixedly connected；One group of travel mechanism passes through cushion block（55）And it is bolted to support frame（57）On, the travel mechanism Quantity and bending leaf spring（52）Quantity is identical, and travel mechanism is in support frame（56）On position and bending leaf spring（52）And straight Leaf spring（53）Position correspondence, the travel mechanism is to bending leaf spring（52）With straight leaf spring（53）Direction is moved and is contacted, Deflection by after the amount of movement for controlling travel mechanism, being used to adjust leaf spring movable back beam；Warp thread is from warp beam（59）After moving back solution By the fixed back rest（57）, movable back beam（51）Heald frame is reached, weaving is participated in；Movable back beam（51）In the presence of warp tension Swing, alleviate due to the tension variation that opening causes.

2. the low inertia back rest of loom according to claim 1, it is characterised in that described travel mechanism is cylinder （54）, the cylinder（54）In piston rod in the presence of pressure-air toward straight leaf spring（53）Direction is released and is contacted, and passes through High-pressure air pressure in control cylinder, to adjust the deflection of leaf spring movable back beam；Described movable back beam is one semicircle Plate spring structure simultaneously constitutes leaf spring movable back beam（51）；Described straight leaf spring（53）For multi-disc stacks installation, after increasing activity Beam rigidity, reduces movable back beam deformation, curved leaf spring（52）Crooked position and leaf spring movable back beam（51）Contact.

3. the low inertia back rest of loom according to claim 1, it is characterised in that described travel mechanism is gas bullet Spring（64）Or buffer medium（74）；

Described buffer medium is by buffer medium support frame（61）Clamping, buffer medium support frame（61）By cushion block（55）And It is bolted to support frame（57）On, buffer medium（74）Quantity and bending leaf spring（52）Quantity is identical, in support frame（56）On Position and bending leaf spring（52）With straight leaf spring（53）Position correspondence, is provided with the adjustable buffer medium of elongated slot in cushioning supportive frame To bending leaf spring（52）With straight leaf spring（53）Distance；

Described movable back beam is a semicircular plate spring structure and constitutes leaf spring movable back beam（51）；Described straight leaf spring（53） For multi-disc stacks installation, to increase movable back beam rigidity, movable back beam deformation is reduced.