US20020174644A1

US20020174644A1 - Fancy yarn spinning device

Info

Publication number: US20020174644A1
Application number: US09/813,847
Authority: US
Inventors: Kun-Chi Hsieh; Cheng-Tung Chang; Ching - Tang Huang; Sheng- Fu Chiu
Original assignee: CHINA TEXTILE INSTITUTE
Current assignee: CHINA TEXTILE INSTITUTE
Priority date: 2001-03-22
Filing date: 2001-03-22
Publication date: 2002-11-28

Abstract

This is a fancy yarn spinning device with the number of counts and twisting varying according to the variation of waveforms, designed with pre-defined waveforms, working with fixed cycles, fixed amplitudes, or random cycles, and random amplitudes, which serve as drafting and twisting parameters for the ring spinning machine. This device involves a servomotor and a inverter, for respective control of the revolutions of front, middle, and rear rollers of the ring spinning machine and the spindle, so the drafting rate and twisting of all areas of the ring spinning machine can change continuously with pre-defined settings, to produce yarns with variable number of counts and twisted conditions. The design of variable waveforms can also achieve different touch and visual feelings. Compared with the conventional models that can only produce slub yarns with drastic change of counts, or twisted yarns with simplified twist changes, this device combines the features of the two, and is capable of producing new yarn types with more variations, better hand touch and better comfort.

Description

FIELD OF THE INVENTION

This invention relates to a fancy yarn spinning device, using waveforms, as well as fixed cycles, fixed amplitudes, or randomly variable cycles and amplitudes that serve to control the drafting and twisting parameters for the ring spinning machine, to produce fancy yarns with number of count and twisting changeable with variable waveforms.

BACKGROUND OF THE INVENTION

Conventional production of slub yarns involves a motor control unit to send out a square wave signal, to accelerate motor revolutions in a specified period of time, producing slub yarns (as in FIG. 2) that are conspicuously different from regular yarns (as in FIG. 1), but such slub yarns involve the following shortcomings:

1. The number of counts of thick places is constant.

2. Variation of thick and thin places is monotonous, lacking smooth transformation.

3. Variation of thick and thin places easily creates constant cycles.

4. Poor hand feeling of the yarns.

Aimed at the above-mentioned shortcomings, this invention provides a fancy yarn spinning device, particularly one with the use of wave as spinning parameter, converting it into signals to control a inverter and a servomotor, serving to control the drafting and twisting of ring spinning machine and spindle winding, for respective control of the revolutions of the front, middle and rear rollers of the ring spinning machine and the spindle, to produce yarns with multiple variations.

BRIEF DESCRIPTION OF THE INVENTION

The main objective of this invention is to provide a fancy yarn spinning device, involving its servomotor and inverter to control the revolutions of its rollers and spindles, so the yarns can gradually change its number of counts and twisted conditions with “wave” parameters. Meanwhile, it will avoid constant cycles in the fabric weaving process, so the yarns can smoothly represent outlines of thicker and thinner yarns and enhance the quality of yarns, upgrading the hand touch and feeling of the yarns, in order to produce yarns with widely variable outlines and best comfort.

The aforementioned device has the following characteristics:

1. Regular sine wave signals are fed into the spinning program, to produce fancy yarns with variable thickness.

2. During the spinning process, the amplitudes and cycles of waveforms can be randomly adjusted to produce fancy yarns with varied amplitudes and cycles.

3. Sine waveform signals of different cycles and amplitudes can be overlapped and synthesized to become another new waveform signals, which serve as the spinning parameters for this device to spin fancy yarns with various waveforms.

4. Summing up the above, this device can produce fancy yarns of various waveform combinations, amplitudes and frequencies, by regular or random settings.

As shown in FIG. 8, the “wave” composition includes “waveform” 10, “frequency” 11 and “amplitude” 12. In mathematical expression, any waveforms can be defined as the composition of sine waves of different amplitudes and frequencies. For example, serrated waveform 13 is composed of several

different sine waveforms

15, 16, as shown in FIG. 9. Square waveform 14 is composed of various

different sine waveforms

17, 18, as shown in FIG. 10. Therefore, any imaginable waveforms can be expressed through the combinations of sine wave signals.

The “wave” serving as control parameters for the production of yarns by this device can set the conditions for the change of number of counts, or serve as the control for twisting of yarns, so the change of waveforms, frequency and amplitudes can change the number of counts and twisted condition of the fancy yarns. Therefore, the finished yarns will smoothly represent the outlines of their thick and thin places to achieve the aforementioned objective.

BRIEF DESCRIPTION OF DRAWINGS

The drawings of preferred embodiments of this invention are described in following details to enable better understanding. [0016]
FIG. 1 is an outline view of a regular yarns. [0017]
FIG. 2 is an outline view of a slub yarn with slub. [0018]
FIG. 3 is an outline view of a fancy yarn with the addition of regular sine-wave signals. [0019]
FIG. 4 is an outline view of a fancy yarn with the addition of regular sine-wave signals, but with larger amplitude than that in FIG. 3. [0020]
FIG. 5 is an outline view of a fancy yarn based on sine waves with variation of cycles and frequencies, the variation of the cycles or frequencies can be preset or made according to circumstances. [0021]
FIG. 6 is an outline view of fancy yarn spun in fixed waves. [0022]
FIG. 7 is an outline view of fancy yarn with variation of all types of waveforms, cycles, and frequencies. [0023]
FIG. 8 illustrates the three elements of wave. [0024]
FIG. 9 illustrates the assembly of serrated waves. [0025]
FIG. 10 illustrates the assembly of square waves. [0026]

FIG. 11 illustrates the structure of this system.



BRIEF DESCRIPTION OF NUMERALS

	10 waveform	11 frequency
	12 amplitude	13 serrated waveform
	14 square waveform	15 sine waveform
	16 sine waveform	17 sine waveform
	18 sine waveform
	20 waveform planning	21 parameter setting
	22 industrial computer	23 programmable control unit
	24 steel plate driver	25 spindle motor driver
	26 front roller driver	27 middle roller driver
	28 rear roller driver
	30 ring spinning machine

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The invention of fancy yarn spinning device is based on preset waveforms, in combination with fixed cycles, fixed amplitudes, or random variation cycles, random variation amplitudes, which serve as drafting and twisting parameters for the control of the ring spinning machine, to make fancy yarns with the number of counts and twists variable according to waveform variations. [0028]
The aforementioned fancy yarns including: [0029]
1. Regular sine wave signals are keyed into the spinning program, to spin fancy yarns with varying thickness, the outline of the yarns shown in FIG. 3. [0030]
2. During the spinning process, the amplitude and cycle of the waveforms are randomly adjusted to spin fancy yarns with varying amplitudes and cycles, the outline of the yarns shown in FIGS. 4 and 5. [0031]
3. Sine wave signals of different cycles and amplitudes are overlapped and synthesized to become new type of waveform signals, which serves as spinning parameters to spin fancy yarns of all waveforms, the outline of the yarns shown in FIG. 6. [0032]
4. Summing up the above, fancy yarns of different waveform combinations, amplitudes and frequencies are made by regular or random spinning processes, the outline of the yarns shown in FIG. 7. [0033]
In mechanical design, the [0034] ring spinning machine 30 has an industrial computer 22 as its main control device, with the installation of servo motor to control the revolutions of the middle and rear rollers and control the variation of number yarn counts. Meanwhile, the front roller and spindle serve to control the variation of twisted degree, in combination with computer waveform planning 20 and parameter setting 21, then the data are transmitted by the computer to the programmable control unit 23 to control the operation of the spinning frame.
As shown in FIG. 11 which illustrates the flowchart of this system as follows: [0035]
After the [0036] waveform planning 20 is processed with parameter setting 21, it goes to the industrial computer 22. This industrial computer 20 then converts the data to mathematical functional forms, the output terminal in connection with the programmable control unit 23, for respective control of the ring spinning machine 30 and the steel plate driver 24, the spindle motor driver 25, the front roller driver 26, the middle roller driver 27, and the rear roller driver 28, so the revolutions of all drivers of the ring spinning machine 30, such as the yarn drafting multiplying rate, the twisted degree and the spindle winding, etc. can vary according to the change of parameters, in order to make yarn products with varied waveforms.
The [0037] aforementioned waveform planning 20 can be converted to mathematical functions, by way of various synthesized signals, such as AUDIO CD, with parameter setting 21, through the industrial computer 22, and written into yarn spinning software. The programmable control unit 23 respectively controls all drivers on the ring spinning machine30, so the drafting rate, the twisting and spindle winding during the operation of the ring spinning machine 30 can vary according to the change of parameters, thus achieving the objectives of making high-quality and excellent-touch yarn products.
The [0038] above parameter setting 21 includes the cycle setting, frequency setting and random setting of synthesized signals.
The yarns made by this device has at least the following features: [0039]
1. The yarns will have no fixed cycles due to the variation of waveforms. [0040]
2. The addition of software/hardware design will control the drafting and twisting and winding of the ring spinning machine, to overcome the defects of poor hand touch. [0041]
3. The outlines of thickness can be smoothly represented. [0042]
4. The feel and touch of the yarns can be better than regular yarns and conventional slub yarns. [0043]
5. Any waveforms or other harmonic waveforms in nature can be added to serve as the basis for the variation of yarn outlines. [0044]
6. Increase of space for variation of yarn design. [0045]
7. Full development of servomotor's applications without addition of any hardware. [0046]
8. Variation can be extended beyond the density of thread, including the length, twist and cycle of thick and thinner sections. [0047]
This device enables full development of servomotor's application aspects, extending yarn variation beyond thread density, such as the length, twist or cycle of thicker and thinner sections, thus significantly improves on the shortcomings of conventional fancy yarns, and upgrade the quality of yarns. [0048]
The above-mentioned device involves preset waveforms that serve to control the drafting and twisting of ring spinning machine and the winding parameter of spindle, respectively controlling the revolutions of the front, middle and rear rollers of the ring spinner and the spindle, to produce fancy yarns with new rhythms. With the capability of upgrading spinning efficiency and controlling yarn quality, as well as enhancing its industrial applications, this device is unprecedented. [0049]
Accordingly, this file is duly filed for a patent right. Your favorable consideration will be appreciated. [0050]

Claims

What is claimed is:

1. A fancy yarn spinning device, with the design of pre-defined waveforms, in combination with fixed cycles, fixed amplitudes, or random variable cycles, random variable amplitudes, serving to control the drafting and twisting parameters of ring spinning machine, to produce fancy yarns with variable number of counts and twisting that change with variable waveforms, this device involving a servomotor and a modulator for respective control of the revolutions of front, middle and rear rollers of the ring spinning machine and the spindle, so the drafting rates and twisted conditions of all regions on the ring spinning machine can vary continuously according to pre-defined settings, to make yarn products with thick and thin places.

2. The fancy yarn spinning device as claimed in claim 1, with its system structure and production flowchart including the following:

Waveforms have been planned, designed and programmed into an industrial computer, such industrial computer then converts the waveforms into mathematical functions, while the output terminal is connected to a programmable control unit, for respective control of the ring spinning machine and the steel plate driver, spindle motor driver, front roller driver, middle roller driver, and rear roller driver, so the revolutions of all drivers of the ring spinning machine, such as the drafting rate, twisting of the yarns, and spindle winding can be changed according to the variation of parameters, to produce yarn products with variable waveforms as pre-defined.

3. The variation yarn spinning device as claimed in claims 1 and 2, wherein the setting of waveform parameters includes the cycle setting, frequency setting and random setting.