Winding operation control method and apparatus for automatic winder

• US 5,499,772 A
• Filed: 10/12/1993
• Issued: 03/19/1996
• Est. Priority Date: 10/16/1992
• Status: Expired due to Fees

• Current Assignee: Murata Machinery Limited (Muratec)
• Original Assignee: Murata Machinery Limited (Muratec)
• Inventors: Maeda, Yoshiyasu, Kubota, Norio
• Primary Examiner(s): Stodola, Daniel P.
• Assistant Examiner(s): Mansen, Michael R.
• Application Number:
  US08/133,867
• Time in Patent Office: 889 Days
• Field of Search: 242/35.5 R, 242/32, 242/154, 242/419.7, 242/18 R
• US Class Current: 242/417.2
• CPC Class Codes: B65H 2555/23 magnetic, e.g. rotary solenoids
• CPC Class Codes: B65H 2701/31 Textiles threads or artificial strands of filaments
• CPC Class Codes: B65H 54/22 Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores
• CPC Class Codes: B65H 57/22 adapted to prevent excessive ballooning of material
• CPC Class Codes: B65H 59/24 Surfaces movable automatically to compensate for variation in tension
• CPC Class Codes: B65H 59/28 the surfaces being urged towards each other
• CPC Class Codes: B65H 59/40 Applications of tension indicators
• CPC Class Codes: B65H 69/00 Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device

Abstract

A yarn tension control device of an automatic winder which includes a variably controlled tensioning device for each of a multitude of spindles of a winding unit; a tension detecting device for specific one of the multitude of spindles; and control devices for controlling the tensioning device for the specific spindle by the tension detecting device and for controlling the tensioning device for other multitude of spindles on the basis of an output value to the tensioning device for this specific spindle.

Claims

1. A winding operation control method for an automatic winder having an automatic winder with a large number of winding units arranged in rows, comprising the steps of:

setting at least a unit to be a specific unit which acts for at least some of said winding units;

storing an operation data of said specific unit; and

controlling an operation of said at least some of said winding units other than the specific unit based on the operation data of the specific unit, wherein said specific unit and said at least some of said winding units other than the specific unit operate independently, and wherein said operation data stored for said specific unit is provided to said units other than the specific unit for controlling thereof.

2. A winding operation control apparatus of an automatic winder, comprising:

an automatic winder having a plurality of winding units arranged in rows, wherein at least one winding unit is set to be a specific unit which acts for at least some of said winding units;

a storage means for storing therein winding operation data for said specific unit;

a first control device which controls an operation condition of said specific unit; and

a second control device which controls an operation condition of said at least some of said winding units other than the specific unit based on the winding operation data stored for said specific unit, wherein said first control device controls said operation of said specific unit independent from said second control device controlling said at least some of said winding units other than said specific unit.

3. A winding operation control apparatus of an automatic winder, comprising:

a tensioning device variably controlled by each of a plurality of spindles of a winding unit;

a yarn tension detecting device for a specific one of said plurality of spindles, said yarn tension detecting device controlling said tensioning device for said specific spindle;

storing means for storing therein data, including data for said tensioning device, for said specific one of said plurality of spindles; and

a control device for controlling said tensioning devices for other ones of said plurality of spindles, which are other than said specific spindle, on the basis of an output value for said tensioning device of said specific spindle,

wherein said yarn tension detecting device controls said tensioning device of said specific spindle independent from the control of said tensioning devices of said other ones of said plurality of spindles.

4. A winding operation control apparatus as claimed in claim 3, wherein a unit controller is provided in said winding unit, wherein said control device sets a winding condition of said unit controller and stores tension from said storing means data, and wherein said tensioning device adjusts tension corresponding to said tension data, said tension data being stored so as to be changed stepwise from the start of a winding of a package to an end of the winding thereof.

5. A winding operation control apparatus as claimed in claim 3, wherein a unit controller is provided with said winding unit, wherein the control device, which sets winding condition in said unit controller, stores a yarn tension data from said storing means, wherein said yarn tensioning device of said plurality of spindles adjusts tension corresponding to said yarn tension data, and wherein said control device also stores yarn tension data used for increasing tension at the start of package winding.

6. A winding operation control apparatus of an automatic winder as claimed in claim 5, wherein said control device stores yarn tension data used for increasing yarn tension during a period of time until a winding operation reaches to a normal condition after a yarn joining operation.

7. A winding operation control apparatus of an automatic winder as claimed in claim 3, wherein a unit controller is provided with said winding unit, wherein the control device, which sets winding conditions in said unit controller, stores a yarn tension data, wherein said yarn tensioning device of said plurality of spindles adjusts tension corresponding to said yarn tension data, and wherein said control device also stores yarn tension data used for decreasing tension when an unwinding resistance increases owing to little remainder of yarn on a spinning bobbin.

8. A winding operation control apparatus of an automatic winder as claimed in claim 7, further comprising an unwinding assisting device, vertically movable above a spindle, for restricting ballooning of a yarn being unwound from a bobbin and for suppressing change and increase of an unwinding tension, wherein the unit controller detects the time when an unwinding resistance increases, said unit controller controlling the lifting of said assisting device.

9. A winding operation control apparatus of an automatic winder as claimed in claim 3, wherein said control device includes a feedback circuit for said specific spindle and a reference value output circuit for other multitude of spindles, a unit controller for specific spindles includes a first output circuit correspondingly to the tensioning devices for said other multitude of spindles, a second output circuit correspondingly to the yarn tension detecting device and a ratio output circuit correspondingly to the first output circuit, and said unit controller for others than the specific spindles is provided with the first output circuit correspondingly to the tensioning device and the ratio output circuit correspondingly to the first output circuit.

10. A winding operation control apparatus of an automatic winder as claimed in claim 9, wherein said ratio output circuit provided in the unit controller serves to change a tension value corresponding to a take-up condition of each spindle by use of ratios in relation to a reference voltage.