Low-tension weft straightener

Abstract

The utility model relates to the field of weft finishing, in particular to a low-tension weft finishing machine. The low-tension weft straightener comprises a machine frame, a bending roller and at least one straightening roller, wherein the bending roller and the at least one straightening roller are rotationally installed in the machine frame. Wherein the bending roller is a driving roller and is used for realizing fabric weft bending correction; the skew correction roller is a driven roller and is used for correcting skew weft of the fabric; at least one straightening roller is a light roller, and a roller body of the light roller is made of carbon fibers or basalt or glass fibers. According to the utility model, the light rollers are used as partial or all straightening rollers, and the rotation damping of partial or all straightening rollers is reduced, so that the tension of the fabric is reduced, and the weft straightening can be well carried out on the high-elastic knitted fabric.

Description

Technical Field

[0001] The utility model relates to the field of warp rectification, and particularly relates to a low-tension warp rectifying machine. Background Art

[0002] A warp rectifying machine is a device widely used in the textile industry, mainly used for correcting the warp bending and warp skewing of fabrics to ensure the quality and appearance of the fabrics.

[0003] The warp rectifying machine has a good warp rectifying effect on shuttle fabrics. However, when rectifying high-elastic knitted fabrics such as knitted weft knitting and knitted warp knitting, due to the high elongation and elasticity of these knitted fabrics, during the warp rectifying process, the fabric is prone to deformation due to the action of tension, and when the fabric is under the action of tension, the weft yarn is prone to shift and it is difficult to maintain its original position. Moreover, the warp skew may be straightened and it is easy to be misjudged as having been warp rectified. After the tension disappears, the warp skew state returns again. These situations ultimately result in a poor warp rectifying effect for high-elastic knitted fabrics.

[0004] Currently, to solve the problem of poor warp rectifying effect for high-elastic knitted fabrics, it mainly relies on manually releasing the allowance and manually judging to repeatedly correct, which cannot solve the problem well and affects the fabric quality.

[0005] In view of this, there is an urgent need to design a solution to solve the problem of poor warp rectifying effect for high-elastic knitted fabrics. Summary of the Invention

[0006] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a low-tension warp rectifying machine which uses lightweight rollers as part or all of the skew correcting rollers to reduce the rotational damping of part or all of the skew correcting rollers, thereby reducing the fabric tension, and thus can well warp rectify high-elastic knitted fabrics.

[0007] To solve the above technical problem, the technical solution of the utility model is: a low-tension warp rectifying machine, including a frame and a bending roller and at least one skew correcting roller respectively rotatably installed in the frame; wherein,

[0008] The bending roller is a driving roller for realizing the correction of fabric warp bending;

[0009] The skew correcting roller is a driven roller for realizing the correction of fabric warp skew;

[0010] At least one skew correcting roller is a lightweight roller, and the roller body of the lightweight roller is made of carbon fiber or basalt or glass fiber.

[0011] Further, in order to better warp rectify high-elastic knitted fabrics, the low-tension warp rectifying machine further includes at least one fabric guiding roller, and the fabric guiding roller is installed in the frame and is a driven roller for guiding the fabric; wherein, at least one fabric guiding roller is the lightweight roller.

[0012] To further and better improve the weft alignment effect of high-elastic knitted fabrics, all skew-rectifying rollers and all fabric guiding rollers are the lightweight rollers.

[0013] The specific structure of a lightweight roller is further improved. The lightweight roller includes two opposed shaft heads and a roller surface fixedly connected to the two shaft heads. The shaft heads are rotatably mounted on the frame through bearings, and the shaft heads are made of lightweight materials.

[0014] Further, the lightweight material is aluminum alloy.

[0015] Another specific structure of a lightweight roller is further provided. The lightweight roller includes two opposed shaft heads and a roller surface rotatably mounted on the shaft heads through bearings, and the shaft heads are fixedly mounted on the frame.

[0016] After adopting the above technical solutions, in the present utility model, the roller bodies of some or all of the skew-rectifying rollers are made of carbon fiber or basalt or glass fiber materials. The roller bodies of these materials are relatively light and have small rotational damping, which can reduce the fabric tension, enabling the weft aligner to well align high-elastic knitted fabrics and improve the quality of high-elastic knitted fabrics. The present utility model is applicable to the weft alignment of various fabrics. Description of the Drawings

[0017] Figure 1 is a schematic structural view of a low-tension weft aligner of the present utility model;

[0018] Figure 2 is a schematic structural view of another low-tension weft aligner of the present utility model;

[0019] Figure 3 is a schematic structural view of a skew-rectifying roller or a fabric guiding roller of the present utility model;

[0020] Figure 4 is a schematic structural view of another skew-rectifying roller or a fabric guiding roller of the present utility model;

[0021] In the figure, 1 is the frame; 2 is the bending roller; 3 is the skew-rectifying roller; 4 is the fabric guiding roller; 5 is the fabric; a is the shaft head; b is the roller surface. Detailed Embodiments

[0022] In order to make the content of the present utility model be more clearly understood, the following further describes the present utility model in detail according to specific embodiments and in conjunction with the drawings.

[0023] As Figures 1 to 4 shown, a low-tension weft aligner includes a frame 1 and a bending roller 2 and at least one skew-rectifying roller 3 rotatably mounted in the frame 1 respectively; among them,

[0024] The bending roller 2 is a driving roller for realizing the weft bending correction of the fabric 5;

[0025] The skew-rectifying roller 3 is a driven roller and is used to achieve the skew correction of the fabric 5 in the weft direction;

[0026] At least one skew-rectifying roller 3 is a lightweight roller, and the roller body b of the lightweight roller is made of carbon fiber or basalt or glass fiber.

[0027] In practical applications, due to the superior physical properties of carbon fiber, the roller body b of the lightweight roller is preferably made of carbon fiber.

[0028] In addition, considering that the cost of the lightweight roller is higher than that of the skew-rectifying roller 3 made of traditional metal materials, therefore, according to the elasticity of the high-elastic knitted fabric, an appropriate number of skew-rectifying rollers 3 can be configured as lightweight rollers. If only considering the weft-aligning effect on the high-elastic knitted fabric, it is preferred to configure all the skew-rectifying rollers 3 as lightweight rollers.

[0029] Specifically, the inventor of this patent found that the reason for the poor weft-aligning effect of the existing weft-aligning machine on high-elastic knitted fabrics is that the roller body b of the skew-rectifying roller 3 of the existing weft-aligning machine is mostly made of relatively heavy metal roller bodies such as stainless steel and metal alloys. As a driven roller, the skew-rectifying roller 3 is relatively heavy as a whole, and the rotational damping is naturally large. Eventually, the tension of the fabric 5 is relatively large. Due to the high-elastic characteristics of the high-elastic knitted fabric, it will naturally deform, the weft lines will shift, and the weft skew will be straightened, etc., thus affecting its weft-aligning effect. In this embodiment, the roller body b of some or all of the skew-rectifying rollers 3 is made of carbon fiber or basalt or glass fiber. These roller bodies b are relatively light and have small rotational damping, which can reduce the tension of the fabric 5, enabling the weft-aligning machine to well weft-align the high-elastic knitted fabric and improve the quality of the high-elastic knitted fabric. Therefore, the weft-aligning machine of this embodiment is applicable to the weft-aligning of various fabrics.

[0030] In one embodiment, as Figure 1 and Figure 2 shown, the low-tension weft-aligning machine further includes at least one fabric guiding roller 4. The fabric guiding roller 4 is installed in the frame 1 and is a driven roller for guiding the fabric 5; wherein, at least one fabric guiding roller 4 is a lightweight roller.

[0031] In practical applications, considering that the cost of the lightweight roller is higher than that of the fabric guiding roller 4 made of traditional metal materials, therefore, according to the elasticity of the high-elastic knitted fabric, an appropriate number of fabric guiding rollers 4 can be configured as lightweight rollers. If only considering the weft-aligning effect on the high-elastic knitted fabric, it is preferred to configure all the fabric guiding rollers 4 as lightweight rollers.

[0032] In one embodiment, as Figure 1 and Figure 2 shown, all the skew-rectifying rollers 3 and all the fabric guiding rollers 4 are lightweight rollers.

[0033] In the above embodiments, the structures of the skew-rectifying roller 3 and the fabric guiding roller 4 can be of two types:

[0034] The first type, asFigure 3 As shown, it includes two opposed shaft heads a and a roller body b fixedly connected to the two shaft heads a. The roller body b can be fixedly sleeved on the two shaft heads a, and the shaft heads a are rotatably mounted on the frame 1 through bearings.

[0035] In this structure, considering that the shaft heads a and the roller body b rotate together, therefore, in order to further reduce the weight of the lightweight roller, the material of the shaft heads a of the lightweight roller can be made of lightweight materials such as aluminum alloy.

[0036] Second, as Figure 4 shown, it includes two opposed shaft heads a and a roller body b rotatably mounted on the shaft heads a through bearings, and the shaft heads a are fixedly mounted on the frame 1.

[0037] In this structure, considering that the shaft heads a do not rotate with the roller body b, the weight of the shaft heads a will not affect the rotational resistance of the roller body b. Therefore, the shaft heads a of the lightweight roller can be made of conventional metal materials with a relatively large density such as stainless steel, or can also be made of lightweight metal materials such as aluminum alloy.

[0038] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A low-tension weft straightening machine, characterized in that it includes a frame (1), a bending roller (2) and at least one skew correcting roller (3) which are respectively rotatably installed in the frame (1); wherein, the bending roller (2) is a driving roller for realizing the correction of the weft bend of the fabric (5); the skew correcting roller (3) is a driven roller for realizing the correction of the weft skew of the fabric (5); at least one skew correcting roller (3) is a lightweight roller, and the roller body (b) of the lightweight roller is made of carbon fiber or basalt or glass fiber.

2. The low-tension weft straightening machine according to claim 1, characterized in that it further includes at least one fabric guiding roller (4), and the fabric guiding roller (4) is installed in the frame (1) and is a driven roller for guiding the fabric (5); wherein, at least one fabric guiding roller (4) is the lightweight roller.

3. The low-tension weft straightening machine according to claim 2, characterized in that all the skew correcting rollers (3) and all the fabric guiding rollers (4) are the lightweight rollers.

4. The low-tension weft straightening machine according to claim 1 or 2 or 3, characterized in that the lightweight roller includes two opposed shaft heads (a) and a roller body (b) fixedly connected to the two shaft heads (a), the shaft heads (a) are rotatably installed on the frame (1) through bearings, and the shaft heads (a) are made of lightweight materials.

5. The low-tension weft straightening machine according to claim 4, characterized in that the lightweight material is aluminum alloy.

6. The low-tension weft straightening machine according to claim 1 or 2 or 3, characterized in that the lightweight roller includes two opposed shaft heads (a) and a roller body (b) rotatably installed on the shaft heads (a) through bearings, and the shaft heads (a) are fixedly installed on the frame (1).

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