CN108275485A - A method of improving tricot machine fabric reeling quality - Google Patents

Abstract

A method of tricot machine fabric reeling quality being improved, this method is：First increase by one of backplate in the medial surface of holder, and designed on the holder of tricot machine including two pulling rollers, a cloth beam, compression bar and connecting rod devices for taking-up, keep backplate vertical with two pulling roller axial connecting lines, and two ends of cloth beam are held respectively, to ensure that cloth beam is not fallen off；A cloth beam with two pulling roller tangential contacts is designed in the oblique upper between two pulling rollers again, it is drive roll to make two pulling rollers, and direction of rotation is identical, and it is passive rotation to make cloth beam, and making two pulling roller lines of centres at angled manner, inclination angle is 14~18 °；Then the end of the compression bar is designed with idler wheel, to application cloth beam end with pressure, to increase the frictional force in operation process；This method can make fabric entirely batch cloth road all to maintain certain tension, and cloth cover will not be shunk, and be conducive to the quality and stability that improve product.

Description

A method for improving the coiling quality of warp knitting machine gray cloth

technical field

The invention relates to a method for improving the coiling quality of warp knitting machine gray cloth, and belongs to the technical field of warp knitting machine machinery.

Background technique

As we all know, industries such as textiles, clothing, leather, plastics, rubber, paper, etc. are equipped with take-up devices for output products, especially gray fabrics woven by warp knitting machines need more accurate and reliable take-up devices. The coiling device of the existing warp knitting machine gray cloth has the following characteristics:

a. The plane formed by the axis lines of the two pulling rollers of the existing warp knitting machine is in a horizontal state. In order to facilitate the disassembly of the gray cloth roll, most of the cloth rolling rollers have no fixing device, and they are directly placed on the two pulling rollers , relying on the torque negative drive formed by the friction with the pulling roller;

b. The existing cloth rolling roller adopts a steel pipe with a larger wall thickness, the purpose is to increase its weight, thereby increasing the frictional force, and it can also achieve reliable winding for light and thin fabrics with less stretchability, but for heavy fabrics with greater stretchability , reliable coiling cannot be achieved at the initial stage of coiling;

c. In order to facilitate the operation space for the operator, the distance between the area of the coiling mechanism and the weaving mechanism of the main machine is relatively large (close to 2 meters), the laying path is long, and the tension of the gray fabric is not enough, and it is in a slack state;

Therefore this gray cloth winding device has following defective:

a. The safety and reliability are not enough. As the number of cloth rolls increases, the diameter of the cloth roll will become larger, the center of gravity will increase, and the supporting surface will be too small, resulting in insufficient stability. If you are not careful, the entire cloth roll will slide down, and the gray cloth will be dirty Or smash the machine, and seriously pose a threat to the safety of the ground staff;

b. The cloth rolling roller cannot reliably roll cloth for various fabrics. It is not advisable to simply increase the weight of the cloth rolling roller. First, it is not easy to operate; second, after the cloth is rolled to a certain amount, the excessive weight of the cloth rolling roller will form excessive motion resistance; For large and thick gray cloth, it is difficult to compress the gray cloth even if the weight of the cloth winding roller is increased. When the gray cloth is not pressed tightly, the following three adverse consequences may occur. One is that due to insufficient friction, it is difficult to form an effective torque to drive the cloth roll; The third is that the width direction of the cloth surface will shrink and form wrinkles. In the subsequent dyeing and finishing process, the covered part of the wrinkles will not be dyed, which will seriously affect the quality of the cloth surface;

c. The reliability of the constant tension of gray cloth is not enough. Due to the long cloth path, the tension of the gray cloth is not enough, and it is in a loose state. The gray cloth will shrink, especially the shrinkage in the width direction will produce adverse effects. First, it is not convenient to pull the looped weaving part evenly under force, and second, it is not easy to roll the cloth. The winding of the gray cloth by the roller is prone to wrinkles.

Contents of the invention

In order to overcome the above-mentioned defects of the prior art, the present invention provides a method for improving the quality of gray cloth coiling of warp knitting machines, which is used to improve the safety of the coiling device of the gray cloth, the reliability of the stable rolling of the cloth roll, and the constant tension of the gray cloth. The stability of the machine improves the surface quality of the rolled gray cloth.

For solving its technical problem, the technical scheme that the present invention adopts is: the method for improving warp knitting machine gray cloth coiling quality designed, this method comprises the steps:

1. First add a protective plate on the inner side of the support, and design a coiling device including two pulling rollers, a cloth roll, pressing rod and connecting rod on the support of the warp knitting machine, so that the protective plate is connected with the two pulling rollers. The axes of the pulling rollers are vertical, and hold the two ends of the cloth rolling rollers respectively to ensure that the cloth rolling rollers will not slip; A cloth rolling roller in tangential contact makes the two pulling rollers active rollers with the same rotation direction, makes the cloth rolling rollers passively rotate, and makes the two pulling rollers connect to the center line in an inclined manner, and the inclination angle is 14~ 18 °; then the end of the pressure rod of the coiling device is designed with a roller to apply pressure to the end of the cloth rolling roller, thereby increasing the friction during operation;

. In order to solve the problem of reliable cloth rolling by the cloth rolling roller, the present invention uses the principle of leverage and the theory of tribology to increase the pressure of the two pulling rollers on the cloth rolling roller, thereby increasing the torque formed by the friction force, and reliably driving the cloth rolling roller to the fabric. To carry out stable winding; therefore, a seat plate inlaid with bearings is fixed on the bracket, and the same two short shafts are installed in the seat plate, one end of the outer shaft is connected with a pinion, the other end of the outer shaft is connected with a connecting plate, and the weight It is connected to the other end of the connecting plate by bolts. For easy operation, a handle is installed on the weight; one end of the inner shaft is connected with a large gear, and the other end is connected with a pressure rod. The end of the pressure rod is inlaid with a roller and connected with a mandrel; , the stroke angle of the compression rod and the connecting plate movement is 64°;

. In order to solve the reliability of the constant tension of the gray cloth, the present invention connects one end of the connecting rod to the bracket through a bolt, and the other end is connected with a weight through a supporting bolt. According to the needs of the pressing force, the weight can be adjusted on the connecting rod. position, the connecting rod can swing up and down with the bolt at the left end as the fulcrum, one end of the left and right pressing rods is connected with the middle part of the connecting rod through bolts and nuts, and the arc grooves at the other end respectively press the shaft heads at both ends of the pressing roller; There is a large amount of cloth stored, when the shaft head contacts the contact of the limit switch (lower), the circuit is connected, and the cloth winding motor drives the transmission device to roll the cloth. When the head is in contact with the contact of the travel switch (upper), the circuit of the cloth winding motor is disconnected and the cloth winding is stopped; in this way, the gray cloth is tensioned to achieve the purpose of constant tension.

Among them, two travel switches are designed on the limit switch seat plate on the right side of the pressure rod, one is located at the upper end of the seat plate, and the other is located at the lower end of the seat plate. When reaching the contact of the travel switch below, the cloth winding motor is turned on, and the transmission device is driven to carry out cloth winding. When the pressure roller shaft head touches the upper travel switch, the cloth winding motor circuit is disconnected and stops running; on the middle side of the bracket A shock absorber is designed to reduce the impact and noise generated when the weight falls back.

Wherein, the heavy hammer adopts a multi-piece stacked combination type to adapt to different friction coefficients of the gray cloth;

Compared with the prior art, this technical solution has the following characteristics and beneficial effects:

1. In this method, the two pulling rollers are connected to the center line in an inclined manner, and the inclination angle is 14-18°. The left and right brackets inside the brackets are welded with guard plates, and the guard plates are connected to the axes of the two pulling rollers. Vertically, respectively support the two ends of the cloth roll to ensure that the cloth roll will not slip;

2. In the initial stage of cloth rolling in this method, the roller at the end of the pressure rod exerts a certain pressure on the end of the cloth rolling roller, thereby increasing the friction during operation;

3. After the cloth is rolled up to the specified amount by this method, the roller at the end of the pressing rod is disengaged from the cloth rolling roller, and the travel angle of the pressing rod is 64°;

4. The weight in this method adopts a multi-piece stacked combination type to adapt to different friction coefficients of gray fabrics;

5. In this method, a damping pad is designed on the armor, which can reduce the impact and noise generated when the weight falls back;

6. In this method, the slack section in the middle of the gray cloth is pressed by a pressing roller to increase the tension of the gray cloth;

7. There are two travel switches designed in the device of this method. When the cloth pressing roller shaft head touches the contact of the lower travel switch, the cloth winding motor is turned on, and the transmission device is driven to roll the cloth, and the cloth pressing roller shaft head touches the top When the limit switch is on, the circuit of the cloth winding motor is disconnected and stops running;

8. This method has been applied and verified in specific production practice; the results show that it has the following effects: first, it solves the problem of the safety and stability of the gray cloth bundle, and the cloth roll will not slip off accidentally; second, it solves the problem of the reliability of the cloth roll The technical problem of rolling cloth; the third is to solve the problem of constant tension reliability of gray cloth. The whole cloth road has a certain tension, and the cloth surface will not shrink, which improves the quality and stability of the product, and has won unanimous praise from users and manufacturers.

Description of drawings

Fig. 1 is a schematic diagram of the position distribution structure of the pulling roller and the cloth rolling roller of the present invention,

Fig. 2 is a schematic diagram of the principle structure of the supercharging mechanism in the present invention,

Fig. 3 is a schematic diagram of the cut-away structure of the supercharging mechanism in the present invention,

Fig. 4 is a schematic structural diagram of the tensioning principle of the middle gray cloth of the present invention.

In the figure: 1, the first pulling roller, 2, the second pulling roller, 3, the cloth rolling roller, 4, the bracket, 5, the pressing rod, 6, the roller, 7, the mandrel, 8, the seat plate, 9, Big gear, 10-shaft, 11, pinion, 12, bearing, 13, connecting rod, 14, heavy hammer, 15, handle, 16, damping pad, 17, angle plate, 18, connecting rod, 19, pressure rod , 20, pressure iron, 21, cloth guide roller, 22, travel switch (top), 23, travel switch (bottom), 24, cloth pressure roller, 25, limit switch seat plate.

Detailed ways

The present invention is further described below in conjunction with accompanying drawing and embodiment: The method for the reliable coiling of warp knitting machine gray cloth that designs is carried out on the basis of existing warp knitting machine gray cloth coiling device. A protective plate is added on the inner side, and the line connecting the axes of the first pulling roller (1) and the second pulling roller (2) of the gray cloth winding device is changed from a horizontal method to an inclined method, and the inclination angle is 14°～18° , the guard plate is perpendicular to the axis connection of the two pulling rollers, and supports the two ends of the cloth rolling roller (3) respectively. (see picture 1)

Fig. 2 expresses the movement principle of the supercharging mechanism. When the cloth winding device is in the initial position of the cloth winding device, the pressure rod (5) presses the end of the cloth winding roller (3), and as the cloth winding roller (3) goes up As the number of fabrics increases, the weight (14) swings back counterclockwise. After the movement reaches a range of 64°, the end of the pressing rod (5) and the cloth rolling roller (3) are in a critical compression state, that is, after exceeding this position , the pressure bar is disengaged from the cloth rolling roller. At this end position, the weight (14) is supported by the rubber damping pad (16), and one end of the angle plate (17) is used to install the vibration damping pad (16). The other end is connected with the bracket (4) through bolts and nuts;

Figure 3 is a cutaway part of the supercharging mechanism, which is used to express the composition of the part structure. The seat plate (8) inlaid with the bearing (12) is fixed on the bracket (4), and the same two short shafts (10) are installed in the seat plate, one end of the outer shaft is connected with a pinion (11), and the other end is connected with a Connecting plate (13), heavy hammer (14) is connected on connecting plate (13) other end by bolt, for ease of operation, handle (15) is installed on the heavy hammer (14). One end of the inner shaft is connected with a large gear (9), the other end is connected with a pressure rod (5), and the end of the pressure rod (5) is inlaid with a roller (6) and connected with a mandrel (7);

Fig. 4 is a schematic structural diagram of the tensioning principle of the middle gray cloth. One end of the connecting rod (18) is connected with the bracket (4) by a bolt, and the other end is connected with a pressure iron (20) by a supporting bolt, and one end of the left and right pressure rods (19) is connected with the connecting rod (18) by bolts and nuts. The middle part is connected, and the arc groove at the other end presses the shaft heads at the two ends of the pressure roller (24) respectively. When there is a large amount of cloth stored and the shaft head is in contact with the contact of the travel switch (lower) (23) fixed on the limit switch seat plate (25), the circuit is connected, and the cloth winding motor drives the cloth guide roller (21) The transmission device is used to roll the cloth, and the cloth pressing roller (24) is lifted up by the gray cloth. When the contact of the pressing roller shaft head contacts with the travel switch (upper) (22), the circuit of the cloth winding motor is disconnected, and the winding is stopped. cloth.

This method has been applied and verified in specific production practice; this device is used in the E2288-138 warp knitting machine exported to Turkey, and it is also used in the E2288-136 warp knitting machine sold to domestic manufacturers. Especially in the new product E2285-110 warp knitting machine, the effect is more obvious. This model is mainly used to produce large-gauge spacer fabrics, and the thickness of the gray fabric is as high as 50mm. After installing a new type of cloth rolling device, the whole winding process is stable and reliable. The utility model device is expected to be extended to papermaking machinery, plastic film winding machinery, bleaching and dyeing machinery, leather processing machinery and other fields.

The following introduces the definitions of abbreviations and key terms used in this device:

Warp knitting machine: Use one or several groups of yarns arranged in parallel to form a knitted fabric at the same time on all the working needles fed into the machine in the warp direction. This method is called warp knitting, and the fabric is called warp knitting. , the machine that weaves this fabric is called a warp knitting machine;

Take-up device: an auxiliary mechanism that winds the warp-knitted fabric into a cloth roll in the longitudinal direction;

Cloth rolling roller: it is used to touch and rub the warp knitted fabric to wind the fabric into a roll and carry the cloth roll. It adopts a hollow lightweight aluminum tube with shaft heads installed at both ends, and the outer circle is covered with rubber skin for passive transmission;

Pulling roller: It is a hollow steel pipe with shaft heads installed at both ends, and the outer circle is covered with rubber skin, driven by a transmission device;

Cloth guide roller: It is a hollow steel pipe with a smooth surface and driven by the cloth to rotate negatively, which is used to guide the cloth and form tension;

Cloth pressing roller: It is a hollow steel pipe with shaft heads installed at both ends. The surface is smooth and passively rotated by the cloth, which is used to press the gray cloth and form tension.

Claims (3)

1. a kind of method improving tricot machine fabric reeling quality, it is characterized in that：This method comprises the following steps：

, first in the medial surface of holder increase by one of backplate, and design on the holder of tricot machine including two pulling rollers, one The devices for taking-up of a cloth beam, compression bar and connecting rod keeps backplate vertical with two pulling roller axial connecting lines, and holds cloth beam respectively Two ends, to ensure that cloth beam is not fallen off；One and two pulling rollers are designed in the oblique upper between two pulling rollers again One cloth beam of tangential contact, it is drive roll to make two pulling rollers, and direction of rotation is identical, and it is passive rotation to make cloth beam, and is made For two pulling roller lines of centres at angled manner, inclination angle is 14~18 °；Then the compression bar end of the devices for taking-up is set In respect of idler wheel, to application cloth beam end with pressure, to increase the frictional force in operation process；

, in order to solve the reliable batching of cloth beam, the present invention utilizes lever principle and tribology theory, increases two pulling rollers to volume The pressure of cloth rewinder roll, to the torque that increasing friction force is formed, it is reliable drive cloth beam to fabric carry out stable roll around；Therefore, exist Holder is fixed on the seat board for being inlaid with bearing, identical two short axles is equipped in seat board, outboard shafts one end is connected with small Gear, the outboard shafts other end are connected with connecting plate, and the other end in connecting plate is bolted in weight, for ease of operating, on weight Handle is installed；One end of inner shafts is connected with gear wheel, and the other end is connected with compression bar, and compression bar end is inlaid with idler wheel, diligently Axis connection；Wherein, compression bar and the stroke angle of connecting plate movement are 64 °；

, in order to solve the reliability of fabric identical tension, one end of connecting rod is connect by bolt with holder by the present invention, the other end It tightly has been bolted weight by branch, according to the needs of pressing force size, position of the weight on connecting rod has been adjusted, connecting rod is with a left side Terminal bolt, which is fulcrum, to be swung up and down, and left and right compression bar one end is connected by the middle section of bolt and nut and connecting rod, the other end Arc groove push down the spindle nose at cloth pressing roller both ends respectively；When storing up, cloth amount is more, spindle nose and travel switch（Under）Contact when, Circuit is connected, and batching electric motor drives carry out batching, and when storage cloth amount is few, cloth pressing roller is raised by fabric, spindle nose and row Cheng Kaiguan（On）Contact when, batching motor circuit disconnect, stop batching；In this way, fabric is tensioned, real The purpose of its existing identical tension.

2. the method for improving tricot machine fabric reeling quality according to claim 1, it is characterized in that：On the right side of the compression bar It is designed with travel switch at two on limit switch seat board, the upper end of seat board is located at one, another place is located at the lower end of seat board, work When, when compress roller shaft head touches following travel switch contact, batching motor is connected, and driving transmission device carries out batching, When compress roller shaft head touches travel switch above, batching motor circuit disconnects, out of service；Side is set between in the bracket In respect of cushion blocking, to mitigate the impact generated when weight is fallen after rise and noise.

3. the method for improving tricot machine fabric reeling quality according to claim 1, it is characterized in that：The weight, using more Piece closed assembly combined type,.