Hydromechanic mold clamping mechanism
AssigneeIndustrias Romi S.A.
InventorRomeu Romi
Life of this patent
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Abstract
A hydromechanic mold clamping mechanism for injection molding machines including a movable mold carrying plate provided with hydraulic cylinder rods linked to a fixed mold carrying plate. In accordance with the invention, movable carrying plate (2) receives four sets of hydromechanic mechanisms (6) independently mounted on said movable carrying plate (2) through set of support rods (12 and 13) fixed to said movable plate (2), supporting hydromechanic sets (6) respectively.
Claims19
A hydromechanic mold clamping apparatus, in particular for injection molding machines in which a portion of the mold is attached to a movable plate, comprising
- a movable mold carrying plate,
- sets of support rods rigidly fixed to said movable plate,
- four sets of hydromechanic mold clamping mechanisms mounted on said movable plate and passing through said sets of support rods,
- each of said sets of hydromechanic mold clamping mechanisms comprising a hydraulic cylinder having an opening for passing a tie bar therethrough, a ring-shaped piston having threaded holes, fastening means arranged in said piston to fasten said piston to said movable plate, mechanical clamps connected to and being actuated by hydraulic actuators to lock said hydromechanic mold clamping mechanism about said tie bar, and eyelets arranged to pass therethrough said sets of support rods such that said hydromechanic mold clamping mechanism axially slides on said sets of support rods.
A hydromechanic mold clamping arrangement for injection molding machines, comprising
- a fixed mold carrying plate mounted on a machine base,
- a rear support provided on said machine base, said rear support having a plurality of holes arranged therein,
- a plurality of tie bars arranged parallel to each other, a first end of each of said tie bars being slidably mounted in each of said holes in said rear support,
- a movable carrying plate having openings therein such that each of said tie bars passes through an opening in said movable mold carrying plate, said movable mold carrying plate being arranged between the fixed mold carrying plate and said rear support and having a part of the mold mounted on a first side of said movable mold carrying plate facing said fixed mold carrying plate,
- sets of hydromechanic mold clamping mechanisms, each of said hydromechanic mold clamping mechanisms being independently and slidably mounted on a second side of said movable mold carrying plate opposite to said first side, and
- a pair of support rods for slidably supporting each of said hydromechanic mold clamping mechanisms, said support rods being rigidly fixed to said movable mold carrying plate and passing through said hydromechanic mold clamping mechanism.
Dependencies are inferred from the claim text.