Raising and lowering mechanism for a machine part of plastic thermoforming and/or container sealing equipment comprises a lever mounted by a joint on a guide block moving transverse to a set guide line

摘要

A lever(5) connected by a joint(4) to the machine part(1) is also rotatably mounted via a joint(4') on a linear guide moving transverse to a guide line(2) along which the machine part moves. A counterbalancing weight(9) equal to the weight of the machine part(1) to be moved is carried on the lever at the opposite end to the machine part. Movement of the linear guide block(8) is effected by applying a force to the latter. The machine part(1) is moved along a guide parallel to the guide line(2). Levers may comprise two sections joined together by a shaft mounted in the linear guide. The linear guide system comprises includes a rail(7) along which the guide block(8) moves. Force for mechanism actuation is produced by pneumatic cylinders. An additional cylinder connects with the machine part. An independent claim is included for a machine for production and/or sealing of containers which incorporates the claimed mechanism.