Injection moulding machine

A machine for automatically producing a succession of small components by injection moulding, comprising:

• a mould operable between open and closed positions by a first transmission element, and an injection unit operable by a second transmission element, said transmission elements being individually reciprocable along the longitudinal axis of the machine by a common actuating device which operates in a straight line making an acute angle with the longitudinal axis of the machine and has separate connections to said transmission elements, both said connections including a member pivotable about an axis extending at right angles to the longitudinal axis of the machine and a part of one of said connections also forming a part of means which interconnect said transmission elements and is operable in response to operation of said actuating device to prevent operation of said injection unit until said mould has been closed, said interconnecting means comprising a plate connected by a toggle link to said first transmission element and formed with a cam slot which receives a cam follower on said second transmission element and is so shaped as to first permit said plate to be pivoted about its axis by said actuator to a sufficient extent to close said mould through said first transmission element and then to restrain further pivotal movement of said plate while said cam follower moves, relatively thereto, along said slot in a direction to operate said injection unit.