Mould carrier
AssigneeThe Upjohn Company
InventorAlfred Schlieckmann
Life of this patent
Estimating the term…
Abstract
The invention relates to a mould carrier with a lower platen and an upper platen which can be pivoted with respect to the lower platen through 90.degree. upwards, for receiving the mould halves of, more particularly, polyurethane foam moulds, with an actuating member, which can be moved linearly for opening and closing the mould carrier, and with a two-armed main lever, whose one arm is connected via a toggle lever in an articulated manner with the actuating member, and whose other arm engages the upper platen, in the case of which the toggle lever in the closed position of the mould carrier is perpendicular to the direction of movement of the actuating member for dead-center locking.
Claims10
A mould carrier for complementary mould halves of a mould particularly adapted for use in making polyurethane foam products, which comprises in combination
- a mould carrier frame;
- lower and upper platens respectively supporting said complementary mould halves on said frame and pivotal mounting means on said frame for at least one of said platens to permit movement thereof between a mould closed position wherein said platens are disposed in parallel relation, and a mould open position wherein said platens are disposed substantially 90.degree. to each other;
- an actuating member mounted on said frame for reciprocal linear movement;
- and
- a compound lever system connected between said actuating member and said pivotally mounted platen to move said platen between mould open and mould closed positions in response to reciprocal movement of said actuating member, said compound lever system comprising:
- (a) a two-armed main lever and an intermediate link, said link being pivotally connected at one of its ends to said main lever intermediate the ends of the latter, the other end of said link being pivotally connected to said frame whereby said main lever is supported on said frame to permit its articulation about one or more pivot points;
- (b) a toggle lever connecting a first arm of said main lever to said actuating member;
- (c) a guide pin secured to the upper face of said pivotally mounted platen, and trunnion means on said guide pin pivotally connecting and supporting said platen on the other arm of said main lever, and means for adjusting said trunnion means axially of said guide pin whereby to change the pivot point of said main lever along said pin;
- (d) a guide lever pivotally mounted at one of its ends to said frame coaxially with the pivotal connection of said intermediate link to said frame, said guide lever at its opposite end having a bushing which receives said guide pin to permit limited axial movement of said pin relative to said guide lever;
- (e) said toggle lever being disposed, when said reciprocal actuating means is at its limiting position corresponding to mould closed position, to lock said main and guide levers against pivotal movement.
Dependencies are inferred from the claim text.