Induction type seamless underwear circular knitting machine and method for controlling fabric traction force

A seamless underwear and inductive technology, applied in knitting, weft knitting, textiles and papermaking, etc., can solve the problems of fabric coil appearance differences, uneven pulling force, broken needles, etc. The pulling force is uniform and the effect of improving production efficiency

Active Publication Date: 2021-12-03
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The seamless underwear circular machine adopts the suction and negative pressure pulling method. When weaving, the suction motor starts to work, and the damper controller driven by the stepping motor provides the pulling force to pull the clothes from the feeding port to the discharging The bell mouth, and the different lengths of clothing fabrics are not uniformly pulled, and there may be problems such as uneven clothing appearance
[0003] In addition, due to the small weight of light and thin fabrics during the weaving process, the negative pressure generated by the suction fan cannot provide sufficient pulling force for the fabric, and the fabric is easy to float out of the gap between the needle cylinder and the Huff dial, and the fabric loops are insufficient. , easy to cause fabric defects and damage knitting needles
In addition to ultra-thin fabrics, some special pleated fabrics or high-elastic fabrics experience excessive shrinkage of the fabric during weaving, and accumulate at the needle cylinder opening, resulting in knitting needle defects and broken needles; Fabrics that are too long are more likely to be pulled by suction and negative pressure than fabrics that are too short, resulting in problems such as differences in the appearance of fabric loops
[0004] However, regarding the problem of uneven pulling force on the fabric, in the prior art, elastic yarns are mostly used for weaving. After being boiled off the machine, the fabric shrinks, and the problem of uneven appearance will become less obvious, which limits the selection of yarns. , also restricts the application of the developed product, so there is still no effective solution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Induction type seamless underwear circular knitting machine and method for controlling fabric traction force
  • Induction type seamless underwear circular knitting machine and method for controlling fabric traction force
  • Induction type seamless underwear circular knitting machine and method for controlling fabric traction force

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] This embodiment provides an inductive pulling device for a circular knitting machine with uniform tension and seamless underwear. Take the pulling device of Santoni TOP-2 seamless single jacquard underwear circular machine as an example, the specific parameters are: machine number E28; needle number 1344; barrel diameter 15 inches. like figure 1 As shown, the seamless underwear circular machine adopts the suction negative pressure pulling method. When weaving, the suction motor device starts to work, and the damper controller driven by the stepping motor provides the pulling force to pull the clothes from the feeding port. Pull to the outlet bell mouth, and different lengths of clothing fabrics are not uniformly pulled, and there may be problems such as uneven clothing appearance.

[0061] This embodiment provides an induction-type seamless underwear circular machine, such as figure 1 As shown, the underwear circular machine includes a main body, a pulling device, a...

Embodiment 2

[0070] This embodiment provides an inductive pulling device for a circular knitting machine with uniform tension. like Figure 4 It is shown that the induction device 11 of the pulling system of the seamless underwear circular machine is located at the wall opening of the winding drum 8 and the bottom of the half disk 9, and the induction device of the winding drum 8 and the half disk 9 senses the pairing of different fabrics. The pressure in its vertical direction works. When weaving high-elastic and special-weave fabrics, the fabrics will have weaving problems such as excessive shrinkage and wrinkles, or non-stretching and accumulation in the gap at the bottom of the pan. In this embodiment, induction devices are provided on both the needle cylinder and the half plate, Figure 5 The induction device at the bottom of the half disk 9 is shown. When weaving this type of fabric, the fabric tends to shrink severely and become wrinkled. The negative pressure of the air suction p...

Embodiment 3

[0072] This embodiment provides an inductive pulling device for uniform tension seamless underwear circular knitting machine. The negative pressure x of the suction unit is about 60.0kpa-70.0kpa under normal conditions, and two kinds of fine denier fibers or ultrafine denier fibers are used. When it is used as raw material, the fabric is very light and thin, and the suction negative pressure has little pull on the fabric, and it is not easy to capture the pressure change in the vertical direction of the cylinder wall, which requires an extremely sensitive sensing device. Induction devices (a, b, c, d, e) are provided at different diameters, as shown in Fig. 6(a) and Fig. 6(b). During weaving, the sensing device at point a senses the fabric, and feeds back to the control system to control the suction unit’s 1st level of strength (+20.0kpa). As the fabric continues to weave, the fabric is still relatively light and thin, but the fabric becomes longer, and the negative pressure of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The invention discloses an induction type seamless underwear circular knitting machine and a method for controlling fabric traction force, and belongs to the technical field of circular weft knitting machines. The underwear circular knitting machine comprises a body, a winding drum, a Haff disc and a traction device; the circular knitting machine is provided with an induction device at an opening of the winding drum and/or the Haff disc; the induction device is used for inducing traction force borne by a fabric of the circular knitting machine in the knitting process; the traction device comprises an air suction unit; the air suction unit is connected to an air suction opening through an air pipe and a stepping motor; and the air suction unit is used for controlling the working state of the air suction opening. The induction device is connected to a control system through a circuit, and the control system is connected with the air suction unit; and the circular knitting machine captures the traction force condition of the fabric through the induction device and feeds back the traction force condition to the control system in time, and the control system changes the air suction negative pressure in time according to the traction force collected by the induction device, so that the traction force applied to the fabric of the circular knitting machine in the knitting process is uniform.

Description

technical field [0001] The invention relates to an inductive seamless underwear circular knitting machine and a method for controlling fabric pulling force, belonging to the technical field of knitting circular weft knitting machines. Background technique [0002] In order to adapt to the improvement of people's living and working environment and the requirements of wearing comfort, as well as the application of fine yarn counts, the thinning and thinning of knitted underwear products has become a popular trend. In the seamless underwear circular machine, the pulling mechanism adopts the suction type, and the suction generated by the suction fan is used to suck the fabric, so that the formed fabric is drawn out from the loop forming area to ensure the smooth progress of weaving. The seamless underwear circular machine adopts the suction negative pressure pulling method. When weaving, the suction motor starts to work, and the damper controller driven by the stepping motor pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04B15/88D04B15/99
CPCD04B15/88D04B15/99
Inventor 丛洪莲蒋高明俞旭良王伟荣吴光军
Owner JIANGNAN UNIV
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