Tension control system for converting packages of elastic thread

Inactive Publication Date: 2007-06-21
KIMBERLY-CLARK WORLDWIDE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004] The present invention is a system, apparatus and method for tension control in a thread feeding system that provides a fast and reliable method for feeding elastomeric thread or fiber from a package to a thread processing system. One version of the present invention includes a thread feeding system including guide rolls configured to guide an elastomeric thread through a thread path of the thread feeding system and a driven elastomeric thread package holder. The thread feeding system also includes a variable-speed motor configured to drive the driven elastomeric thread package holder and a first-tension sensor configured to determine the tension on the thread. The thread feeding system also includes a first tension controller device configured to control a speed of the variable-speed motor.

Problems solved by technology

One issue common with OETO is unacceptable variations in threadline tension.
These variations in threadline tension may result in excess utilization of thread, breakage of the thread in the manufacturing process, or poor product quality.
This step incurs additional processing and cost.
This method also may include unacceptable variations in threadline tension resulting in many of the same issues described above.
The aforementioned problems make the processing of elastomeric threads problematic.

Method used

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  • Tension control system for converting packages of elastic thread
  • Tension control system for converting packages of elastic thread
  • Tension control system for converting packages of elastic thread

Examples

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Embodiment Construction

[0010]FIG. 1 illustrates a thread feeding system (40). As shown in FIG. 1, a package (10) is held by a driven elastomeric thread package holder (12). The package holder (12) is sized such that the package (10) may be placed on the holder (12). The package holder may be adapted to contact a core of an elastomeric thread package. Alternatively, the package holder may be adapted to contact the circumference of the elastomeric thread package. The thread or fiber (11) is then directed, in sequence, through a static guide (14) having a substantially circular orifice; a tension device (16) around which the fiber may be wrapped; and a driven take-up roll or set of rolls (18). The static guide (14) is typically an orifice whose inner surface can be a highly polished ceramic material. Such a surface can provide excellent wear resistance and low friction. The take-up roll or rolls (18) representing that part of the manufacturing process equipment to which the thread or fiber is being supplied,...

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PUM

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Abstract

A system and method for tension control in a thread feeding system that provides a fast and reliable method for feeding elastomeric thread or fiber from a package to a thread processing system. The system includes a driven elastomeric thread package holder. The thread feeding system also includes a variable-speed motor configured to drive the driven elastomeric thread package holder.

Description

BACKGROUND [0001] One common method of unwinding thread from a cylindrical mandrel (or “package”) in a manufacturing process is referred to as over end takeoff (OETO). It should be noted that the terms “thread” or “fiber” are used interchangeably throughout this document. One issue common with OETO is unacceptable variations in threadline tension. These variations in threadline tension may result in excess utilization of thread, breakage of the thread in the manufacturing process, or poor product quality. Further, most thread vendors' product OETO thread packages by rewinding an as spun roll. This step incurs additional processing and cost. [0002] Another common method of unwinding thread from a cylindrical mandrel (or “package”) in manufacturing processes is referred to as “rolling takeoff” which works in a draft mode or draw. This method also may include unacceptable variations in threadline tension resulting in many of the same issues described above. [0003] The aforementioned pr...

Claims

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Application Information

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IPC IPC(8): B65H59/04
CPCB65H59/04B65H2701/31
InventorBETT, THOMAS A.UNGPIYAKUL, THOMAS TANAKONWEBER, PAUL A.
OwnerKIMBERLY-CLARK WORLDWIDE INC