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System for making chopped strands

A yarn and cutting wheel technology, applied in the yarn system, glass filament, and cutting thermoplastic material yarn field, can solve the problems of hindering the user's walking and intervention, large volume, etc., to reduce manpower intervention, increase productivity, and reduce production cost effect

Active Publication Date: 2007-09-12
SAINT GOBAIN VETROTEX FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this solution is mainly its bulkiness, the fact that it is still in front of the spinneret and poses a safety problem, this solution may hinder the movement of the user and the intervention of the method

Method used

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  • System for making chopped strands
  • System for making chopped strands
  • System for making chopped strands

Examples

Experimental program
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Embodiment Construction

[0043] On FIG. 1 , a prior art system is shown schematically, comprising at least one spinneret 1 , which is supplied in a known manner with molten glass or glass spheres delivered by a supply device not shown. The spinneret, for example made of a platinum-rhodium alloy, is generally heated by the Joule effect. The spinneret is equipped in its lower part with a plurality of holes from which a plurality of filaments 2 can be drawn off mechanically (a plurality is shown here with a dashed line).

[0044] Said filaments 2 are generally subjected to sizing, i.e. to chemical treatment, so that a product is applied to said filaments, which, through sizing rollers 3, causes yarn binding and sufficient lubrication and subsequent processing and Enhanced usage / mold compatibility.

[0045]The filaments from one spinneret are then joined by engaging guide wheels 4 into at least one yarn 5 which is deflected by, for example, a diverting or driving guide wheel 6 so as to convey said filame...

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PUM

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Abstract

The invention concerns a method for automatic restart, characterized in that it consists in seizing at least one strand (5) derived from a die using gripping means; moving the gripping means up to drawing means (13), said drawing means being adapted to bring said strand (5) at a drawing speed compatible with a cutting operation performed upon the passage of said strand between an anvil wheel (9) and a cutting wheel (8) of a cutting machine (7); modifying the path of the strand (5) between the die and the drawing means (13) using transfer means (18), said transfer means (18) being adapted to cause the strand (1) to pass between the anvil wheel (9) and the cutting wheel (8) using engagement means (20) or inversely to space apart the anvil wheel and the cutting wheel.

Description

technical field [0001] The invention relates to the field of production of cutting yarns for technical applications, in particular cutting yarns of thermoplastic material, especially glass filaments, and also relates to a method of self-recovery and the production of such yarns for allowing the implementation of said method line system. Background technique [0002] Numerous devices are known which enable said production. These systems generally comprise at least one spinneret from which a number of glass strands are drawn and fed to a cutting device comprising, for example, a cutting roll equipped with knives evenly distributed over its circumference Compatible back-up rolls or anvils. Said cutters are arranged in pressure contact with the peripheral surface of the support roller, thus defining a cutting zone. [0003] French Certificate of Addition FR2075019 shows a system of the type described, in which a spinneret is connected to a cutting device. [0004] In order t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01G1/04
CPCD01G1/04C03B37/03C03B37/16Y02P40/57
Inventor D·方特G·弗伦
Owner SAINT GOBAIN VETROTEX FRANCE
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