US 4,932,598 A · Yarn winding machine

Abstract

The invention relates to a high speed yarn winding machine for winding a filament yarn, and which comprises a motor-driven winding spindle and a contact roll rotatingly resting against the surface of a yarn package being wound on the spindle, and with the contact roll serving to guide the yarn onto the package. The contact roll is adapted to be raised from the package surface during a package doff, and it can be rotatably driven while in its raised position by an air turbine wheel, which is co-axially connected to the contact roll. The wheel is provided with two annular rings of recesses which are concentric to its axis, and an air supply system is provided which is able to selectively direct compressed air toward either one of the two rings of recesses, to thereby permit the turbine wheel and thus the contact roll to be rotated in either direction. Thus the rotational speed of the contact roll may be maintained during a package doff, or reduced in speed or stopped in case of a malfunction in the yarn transfer to a new package.

Claims9

Dependent claims

A yarn winding machine comprising

a rotatable spindle adapted for having a bobbin supported yarn package wound thereupon,
a contact roll mounted for rotation about an axis parallel to that of said spindle and adapted to engage the surface of the package being wound on said spindle,
turbine wheel means coaxially mounted to said contact roll, with said turbine wheel means including two distinct annular rings of recesses, and
means for selectively supplying compressed air to each of said annular rings of recesses, and with said annular rings of recesses and said air supplying means being configured such that the air supplied to one of said rings acts to rotate the contact roll in a predetermined rotational direction, and the air supplied to the other of said rings acts to resist rotation in said predetermined rotational direction.

1 more element

A yarn winding machine comprising

a rotatable spindle adapted for having a bobbin supported yarn package wound thereupon,
drive motor means for rotatably driving said spindle,
a contact roll,
means mounting said contact roll and said spindle for rotation about parallel axes and so that the contact roll engages the surface of the package being wound on said spindle, and so as to permit radial distance between the contact roll and said spindle to increase during the build of a package thereupon,
a turbine wheel coaxially mounted to said contact roll, said turbine wheel including a first annular ring of recesses distributed about the peripheral surface of said wheel and a second annular ring of recesses formed on said wheel and arranged coaxially inside of said first rings of recesses, and
means for selectively supplying compressed air to said first and second rings of recesses, and such that air supplied to one of said rings acts to rotate said contact roll in a predetermined rotational direction and air supplied to the other of said rings acts to resist rotation in said predetermined rotational direction.

3 more elements

Dependencies are inferred from the claim text.

Yarn winding machine

Life of this patent

Yarn winding machine

Life of this patent

Abstract

Claims9