Method and device for evaluating pilling resistance of yarn by on-line inlet and outlet measurement mode

A technology for pilling and evaluating devices, which is used in measurement devices, preparation of test samples, material analysis by optical means, etc., can solve the problems of inability to obtain the appearance and morphological characteristics of hairiness and hairballs, inability to observe, and to be different. , to achieve the effect of fast measurement, strong contrast and land saving

Inactive Publication Date: 2012-01-18
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above observation methods for yarn substances, or for the measurement of the number of hair balls on the yarn after the high-strength wear test; or for the measurement of the number of hairiness of the yarn that has not been rubbed; Changes in yarn diameter These methods can only obtain individual quantitative indicators that reflect the pilling performance of the yarn, but cannot observe the entire process of pilling, and cannot obtain the appearance and shape characteristics of hairiness and pilling produced in different stages of the yarn and reflect the yarn quality. The indicator of the tendency of pilling is the size of the entanglement and cohesion between hairs, and their principles and devices are different from those of the present invention

Method used

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  • Method and device for evaluating pilling resistance of yarn by on-line inlet and outlet measurement mode
  • Method and device for evaluating pilling resistance of yarn by on-line inlet and outlet measurement mode
  • Method and device for evaluating pilling resistance of yarn by on-line inlet and outlet measurement mode

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, it is a side view of the yarn pilling evaluation device with in-line and out-of-line measurement, figure 2 Its top view, the described yarn fluffing and pilling evaluation device with double measurement in and out of line is composed of a yarn winding friction mechanism 1, an unwinding tension measuring mechanism 2, a yarn feeding and unwinding mechanism 3, a capacitor plate 4, and an electrostatic generating device 5 , yarn hairiness measurement system 6, yarn supply and collection device 7, reciprocating mechanism 8 and data acquisition and control system 9.

[0038] The yarn winding friction mechanism 1 consists of a yarn winding bobbin 11, a winding bobbin support 12, a left yarn end fixer 13, a right yarn end fixer 14, a double slide bar bushing 15, a yarn winding bobbin stepping motor 16, a friction Block 17, right angle bar 18 and pressure weight 19 form. The lower side of the winding bobbin support 12 is fixedly connected with the d...

Embodiment 2

[0064] Adopt the yarn pilling and pilling evaluation device of online in-out double measurement described in embodiment 1, to 32 S The pilling property of wool yarn is measured.

[0065] The whole measurement and evaluation method is to first measure the thickness and unevenness of the yarn and the fluff and pilling amount of the yarn online, and then measure the thickness and unevenness of the yarn after winding forming, friction sample preparation and smooth unwinding And the fluff and pilling amount of the yarn, that is, the in-situ measurement, and compare the two sets of measured data to give the evaluation of the yarn fluff and pilling.

[0066] The specific implementation steps are:

[0067] Step 1: input the prediction evaluation, the yarn is withdrawn from the bobbin 71, fluffed by the yarn guide hook 72, the front clamping roller 31, and the front electrostatic generator 51, and enters the yarn hairiness measurement system 6 prediction evaluation The diameter o...

Embodiment 3

[0075] Adopt the device identical with embodiment 2 and similar method, same yarn sample (32 S Wool yarn), the same way of clamping and loading the yarn, the same measurement and measurement content, but the asymmetric rotation in the reciprocating rotation of the winding bobbin 11 is adopted, that is, the forward rotation angle is 60o, and the reverse rotation angle is 54o , the supporting reciprocating movement distance is 8cm, so that the friction block 17 applies friction to the yarn around the yarn bobbin 11 for a whole week, and the asymmetric overall rotation is 6 circles, which is equivalent to 60 times of friction at each point. It is equivalent to the friction effect of Example 2. The frequency of the reciprocating rotation is 0.2 Hz, which is the same as in Embodiment 2.

[0076]

[0077] Note: * means that the average tension cannot be carried out in the pre-evaluation measurement, so the average tension data of unwound yarn in the ungrinded area is used for co...

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Abstract

The invention relates to a method and a device for evaluating the pilling resistance of a yarn by an on-line inlet and outlet measurement mode. The method comprises the steps of input pre-evaluation, uniform winding forming, preparation of a test sample by carrying pressurizing friction, stable backing-off and on-line measurement, comparison and evaluation. The device comprises a yarn supply and recovery device, a yarn pilling condition measurement device and a winding friction mechanism. The yarn pilling condition measurement device comprises a capacitor plate, a static electricity generation device and a yarn hairness measurement system. The static electricity generation device comprises a prepositive static electricity generator and a post static electricity generator. The prepositive static electricity generator and the post static electricity generator are respectively arranged at both sides of the yarn hairness measurement system. The capacitor plate is arranged at the rear sideof the post static electricity generator. The winding friction mechanism comprises a winding drum. The separation position of the unwound yarn and the winding drum is provided with a backing-off tension measurement mechanism. The winding friction mechanism is connected with a reciprocating mechanism. In the invention, the yarn is used for directly testing and panel knitting is not used; and by taking a base yarn as the contrast, the method and the device are more accurate.

Description

technical field [0001] The invention relates to a method and device for evaluating yarn fluffing and pilling with online in-out double measurement, which can not only complete the preparation of yarn fluffing and pilling samples, but also can objectively evaluate the fluffing and pilling of yarn after friction, and belongs to Textile quality evaluation and testing technology field. Background technique [0002] Pilling is a major appearance defect of the fabric, which is gradually exposed during wearing and use. The existing pilling performance measurement devices and instruments include: Random Tumble Pilling Tester, ICI Pill Box, Elastomeric-Pad method, Martin Martindale Abrasion Tester, Brush and Sponge Pilling Tester, Accelerator, Inflated Diaphragm Tester), appearance retention tester (Appearance Retention method), reciprocating tester (Reciprocating-table Tester) and HATRA pilling test method (HATRA Pill Tester). These are commonly used pilling measurement methods a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N21/84G01N27/22
Inventor 于伟东王婷刘洪玲万爱兰
Owner DONGHUA UNIV
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