Injection mould for e.g. toothbrush(es) - has revolving inner tool so that first shot is injected into one end before it is turned and second shot enters e.g. other end of cavities

摘要

A machine for the production of brushes has an injection mould to make the bodies of the e.g. toothbrushes or similar, where the bodies concerned consist of a number of successively injected parts (particularly away from their heads); for the purpose the mould has a revolving tool and impressions which are preferably arranged on opposite sides of the centre plane running through that revolving tool; the system has a fixed mould plate on the gate side, another plate on the ejector side and a centre revolving component with a shaft passing through the centre of the latter plate; this component has a device to hold the punches for the bristle holes made later in the head of the brush; and the punches provide a holder for the bristles when the component revolves. The ends of the mould impressions for the head or holding part face together the plane through the centre line and also the revolving component; the part of the impressions to produce the brush head where a second shot of material is injected in a further operation faces outwards away from the centre line plane in the plate on the ejector side. ADVANTAGE - The machine has a simple design. It simplifies production. Its mould has a long service life. The whole machine is compact