Mold apparatus with elastic clamping means

Details Mold apparatus with elastic clamping means Mold apparatus with elastic clamping means

1981-03-16

1982-08-17

Flint, Jr., J. Howard

Static molds

Container-type molding device

Having plural mold sections

4254501, 4254519, 249163, B29C 100

Patent

active

043446019

ABSTRACT:
Mold clamping forces are provided by mounting the mold halves between spaced crossheads connected by elastically deformable rods of tensile steel. The crossheads are pulled slightly apart by hydraulic cylinders to expand and tension the rods, and the prepared molds are then inserted together with appropriately dimensioned wedges or shims to occupy the expansion space. When the hydraulic pressure is released the elastic restoration or spring forces of the stretched rods serve to clamp the assembled molds tightly together to enable injection, curing, etc. A plurality of such mold assemblies may be circumferentially spaced around a rotatable turntable, and the various opening and closing movements may be controlled by rollers on the mold components running in stationary cam tracks around the turntable. C-shaped mold clamps may also be used instead of the crosshead and rod configurations.

REFERENCES:
patent: 2564026 (1951-08-01), Osborn
patent: 3195186 (1965-07-01), Gauban et al.
patent: 3309738 (1967-03-01), Friedman
patent: 3316593 (1967-05-01), Neumann
patent: 3825396 (1974-07-01), Kontz
patent: 3865534 (1975-02-01), Mori

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