Browse Prior Art Database

Resistance Free Wire Loop Metering Mechanism

IP.com Disclosure Number: IPCOM000060658D
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Buchmann, AH: AUTHOR [+3]

Abstract

A technique is described whereby a wire feeding mechanism incorporates a wire loop sensing device, controlled by air pressure, to control the wire as it is fed into wire feed mechani The loop sensing device is unique in that it eliminates faulty feed problems and binds which may occur in the processing of feeding a reel of wire into a wire feed mechanism.

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Resistance Free Wire Loop Metering Mechanism

A technique is described whereby a wire feeding mechanism incorporates a wire loop sensing device, controlled by air pressure, to control the wire as it is fed into wire feed mechani The loop sensing device is unique in that it eliminates faulty feed problems and binds which may occur in the processing of feeding a reel of wire into a wire feed mechanism.

A wire reel 10, as shown in the figure, is received from the wire manufacturer and placed on motor driven spindle 11 so that wire end 12 may be inserted into sensing device 13. Cavity 14 is air pressurized through the use of manifold 15 and slots 16. As feed mechanism 17 pulls the wire through sensing device 13, the loop of wire decreases against air pressure, since the motor of spindle 11 is not actuated at this time. When low limit sensor 18 is actuated, motor driven spindle 11 is turned on so as to control the wire at a slightly greater rate than the demand rate of wire feed mechanism 17. The motor stays on until high limit sensor 19 is actuated by the wire passing through the loop mechanism. At this point motor driven spindle 11 is turned off and will remain off until reactivated by low limit sensor 18.

Air pressure inside cavity 14 is regulated at a level sufficient to maintain a uniform loop. This provides resistance free movement of the wire inside the cavity. For proper operation, it is important to maintain a uniform distribution of air. When manifold 15 rece...