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Spools with internal flexible supports for winding fine wire under high tension

A support, high tension technology, applied in the field of spools, can solve the problems of uneven radial deformation of the core, winding, and twisting of the core winding.

Active Publication Date: 2015-12-23
BEKAERT BINJIANG STEEL CORD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the middle part of the core has a smaller outer diameter than the sides, which causes winding problems during use
This problem is known as the "uneven core deformation" problem: during use, the core radially deforms unevenly along the axis
The inventors believe that this method results in twisted windings close to the core

Method used

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  • Spools with internal flexible supports for winding fine wire under high tension
  • Spools with internal flexible supports for winding fine wire under high tension
  • Spools with internal flexible supports for winding fine wire under high tension

Examples

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Embodiment Construction

[0110] Figure 1a A prior art spool 100 is shown having a core 102 with flanges 104 at both ends. The core has an outer diameter indicated by "OD" and a centerline 106 . After winding, the spool has a fine wire bundle 108 wound at high tension. Due to the fineness and high tension of the wire, the wire exerts a radial pressure "P" and this pressure is transmitted to the core of the spool. The wire 110 near the core bears the cumulative stress of all the windings wound on top of it. The degree of gray scale indicates the increase in radial pressure. Due to this pressure, core 102 deforms into core 102'. The outer diameter OD' of the core between the flanges is more compressed than the outer diameter OD" at the flanges. Furthermore, due to the pressure exerted by the wire on the flanges, the flanges 104' tend to deform and bulge outward. The The reusability of the spool is low and unwinding problems are caused due to the deformation of the core. The wire tension at the outer...

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Abstract

A spool (300) for winding fine wire under high tension is disclosed, which is particularly suitable for winding steel wire for sawing hard and brittle materials. Spools have different inventive aspects. There is a support (310) which includes a radial elastic member (312) which supports the core (302) of the spool from the inside so that the outer diameter of the spool core is over the entire width of the spool when the line is wound on the spool Decrease in a consistent manner. To this end, the core is specially tuned to compensate for the increased radial stiffness at the supports and at the optional flanges. This spool solves the problem of internal layer pressure and self-damage of the saw wire during use on the wire saw machine.

Description

technical field [0001] The present invention relates to spools, and more particularly to spools for winding fine metal wire under high tension. The spool of the present invention is particularly suitable for winding fine sawing wire, and more particularly sawing wire with an abrasive coating. The spool is designed to minimize wire damage, is suitable for repeated use, and forms part of the wire saw machine. The invention also relates to a method of designing such a bobbin. Background technique [0002] Shipping of large lengths is carried out exclusively in coils. For fine metal wire, the coil (called a "wire bundle") is wound on a carrier which may be a bobbin or spool. In the following, the term "spool" will be used, but it should be understood that it can also be replaced by synonyms such as bobbins or spools. A "spool" is cylindrical in shape with an axial bore for receiving a shaft or mandrel during winding or unwinding. Optionally, there may be a rim or ridge at o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H75/14B23D57/00
CPCB23D57/0053B65H75/14B65H2701/354B65H2701/36B65H2701/5124B65H2701/5134B65H2701/514B23D57/00B65H49/38
Inventor S·德保E·韦莱肯N·森H·范霍克
Owner BEKAERT BINJIANG STEEL CORD CO LTD
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