Thread clamping device for a spindle of a spinning or twisting machine for releasably fixing a thread in a clamping gap

Abstract

The invention relates to a thread clamping device for a spindle of a spinning or twisting machine for releasably fixing a thread in a clamping gap, comprising: - a first clamping unit, having an inner sleeve, which can be arranged coaxial with the spindle, and having a thread cutter, which can be fixed on the inner sleeve in the axial direction, which first clamping unit can be fixed on an upper part of the spindle such that axial positioning is provided; and - a second clamping unit, having a clamping element, which can be moved axially, relative to the first clamping unit, between a clamping position, in which the clamping gap between the thread cutter and the clamping element is closed, and an open position, in which the clamping gap is open. In order to provide a thread clamping device which easily and reliably allows a connection of the inner sleeve to the spindle of the spinning or twisting machine for conjoint rotation, the thread cutter is designed to be fixed on the spindle upper part such that axial positioning is provided and is designed to be connected to the spindle upper part for conjoint rotation, and the thread cutter and the inner sleeve can be connected to each other for conjoint rotation.