Browse Prior Art Database

Wire Looping and Cutting Tool

IP.com Disclosure Number: IPCOM000107975D
Original Publication Date: 1992-Apr-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Anderson, M: AUTHOR [+3]

Abstract

An invention is disclosed for a wire looping and cutting mechanism. This tool arose from the need to streamline the formation of twisted pair wire that is used to wire printed circuit boards. (Image Omitted)

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 85% of the total text.

Wire Looping and Cutting Tool

       An invention is disclosed for a wire looping and cutting
mechanism.  This tool arose from the need to streamline the formation
of twisted pair wire that is used to wire printed circuit boards.

                            (Image Omitted)

      The requirements for the wire were to feed the twisted pair
wire from a spool to various lengths, separate the wire ends by a
specified amount, and then shear off the wire from the spool.
Previous equipment often bound during the feeding process and did not
always cut the wire to accurate lengths.

      The mechanism disclosed proved to be more accurate and
reliable.  The feed mechanism uses a stepper motor to drive a belt
that feeds the twisted wire vertically down a slot in the feed block.
Once the required amount of wire passes through the feed block, the
wire is clamped at the exiting end by a rubber pad actuated by an air
cylinder. The wire is also fed through the gripper that has rubber
inserts and an internal spring to control the gripping pressure and
avoid damaging the wire.  The gripper is set at the desired distance
from the feed block to determine the loop length.

      The loop is created by rotating the gripper which is driven by
a belt connected to stepper motor.  Once the desired loop length is
obtained, the wire is cut using a cut-off assembly at the center of
the loop.

      The control of the loop length and loop separation i...