Injection molding machine with pivotable die closing unit
OwnerKarl Hehlinventor
Life of this patent
Estimating the term…
Abstract
An injection molding machine with a mechanism for pivotably repositioning the die closing unit between a horizontal orientation and a vertical orientation, featuring a pivot frame composed of tubular members to which the die closing unit is fixedly attached and two transversely aligned stationary pivot bearings on the machine base, in relation to which the pivot frame is axially adjustable by means of two threaded spindles. The pivotal repositioning is obtained by means of a worm gear drive on one of the pivot shafts, and both pivot shafts cooperate with threaded clamping plugs which press the pivot frame members against the pivot bearings to transfer the pivot connections into rigid mounting attachments on the machine base.
Claims17
In an injection molding machine which has a machine base carrying a die closing unit with stationary and movable die carrier plates designed to hold the stationary and movable die halves of an injection molding die, and a drive assembly producing die opening and closing movements along the longitudinal center axis of the die closing unit which is defined by parallel tie rods guiding the movable die carrier plate, in such a machine,
- a mechanism for pivotably repositioning the die closing unit between a normal horizontal orientation in which the injection molding die is injectable in an axial direction by means of an injection unit which is mounted horizontally on the machine base, in axial alignment with the die closing unit, and a vertical orientation in which the injection molding die is injectable in a radial direction by means of said horizontally mounted injection unit, said pivoting mechanism comprising in combination:
- a pivot frame having two transversely spaced longitudinal frame members which are arranged below and in parallel alignment with said tie rods, the pivot frame being fixedly attached to the stationary structure of the die closing unit to form a rigid pivot assembly therewith;
- two transversely spaced stationary pivot bearings arranged on an upper longitudinal extremity of the machine base, laterally outside said longitudinal frame members, the pivot bearings having axially aligned bores defining a fixed horizontal pivot axis on the machine base which extends transversely to the longitudinal center axis of the die closing unit and transversely to the said axial and radial directions of injection;
- and
- two pivot shafts rotatably received in the bores of the two pivot bearings, the pivot shafts having inwardly extending shaft portions which form connections with said longitudinal frame members, thereby providing support for the pivot frame and the attached die closing unit;
- and wherein
- the connections between the pivot shafts and the longitudinal frame members are shiftable longitudinally on said longitudinal frame members.
Dependencies are inferred from the claim text.