Fibre band opening device for an open-end spinning device and feed tray for the fibre band opening device

A fibre band opening device for an open-end spinning device, comprising:

• a feed tray,
• a fibre band pull-in cylinder and
• an opening roller having an opening roller clothing,
• wherein the opening roller clothing having tips and the tips of the opening roller clothing lie on a circular cylindrical surface,
• wherein the fibre band pull-in cylinder is designed to transport, in conjunction with a clamping surface of the feed tray, a feed fibre band towards the opening roller, the feed tray has a support surface for fixing a fibre tuft, which is processed by the opening roller by combing, and the support surface has a distance from the circular cylindrical surface and the distance is tapered in a fibre transport direction to a minimum distance, and the feed tray has a transition area having a convex curvature between the clamping surface and the support surface,
• characterised in that
• the support surface has a distance of between 4 and 8 millimetres from the circular cylindrical surface at a beginning of the support surface with respect to the fibre transport direction, and wherein the beginning of the support surface is a comb-in point for fibres, and that the minimum distance of the support surface from the circular cylindrical surface is greater than 0.6 millimetres and the minimum distance of the support surface from the circular cylindrical surface is less than 1.5 millimetres.