Patent ID: 9533459
Date: 2017-01-03
CPC Classifications: B29C,B29D,B29L

Claim:
1. Stitcher for stitching strips of rubber material together into a substantially continuous strip, comprising: a surface for placing thereon at least the edges of the strips of rubber material to be stitched together, a stitching head including stitch unit placed over the surface for stitching the edges of the strips of rubber material together along a stitch line, wherein the stitch line and a longitudinal direction of the continuous strip include an angle α, a drive mechanism for driving a relative movement of the stitching head with respect to the surface along a first and a second direction, wherein the second direction is oriented at least substantially transverse to the first direction, and a control device for controlling the drive mechanism for the relative movement of the stitching head with respect to the surface along the first and/or second direction such that the stitch unit at least substantially follows the stitch line, wherein the stitching head is connected to the drive mechanism so as to be rotatable with respect to the drive mechanism about an axis of rotation, wherein the axis of rotation extends at least substantially transverse to the surface, wherein the stitching head comprises a retaining device or locking device for retaining or locking the stitching head against a rotation of the stitching head rotatable with respect to the drive mechanism about the axis of rotation, and wherein the stitching head comprises a wheel placed at a distance from the axis of rotation, wherein the wheel with its tread abuts the surface or at least one of the strips of the rubber material, wherein the retaining device or locking device is arranged to be uncoupled or unlocked, such that the stitching head is freely rotatable by the wheel with respect to the drive mechanism about the axis of rotation and the wheel is oriented in movement direction behind the axis of rotation in case of a movement of the stitching head along the stitch line, for setting the angular rotation of the stitching head for stitching at the set angle α.