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US 11,059,210 B2Granted
Plastic injection molding machine and molding method
AssigneeDiseñO Y Desarrollo De Matriceria, S.L.
InventorJose Antonio Pacios Rivera
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Abstract
A plastic injection molding machine and molding method related to an injection molding machine for stack molds, wherein the central portion of the mold remains fixed and it has two molding faces that act on the fixed central portion by means of a hydraulic chamber that produces the clamping force and prevents the deformations due to bending on the molding faces. Likewise, it relates to a molding method.
Claims8
A plastic injection molding machine, comprising:
- a stationary central platen with at least two molding faces on at least two opposite sides of said central platen, and connected to an injection unit that provides molding material,
- two mobile platens, located on each side of the stationary central platen and movable on a same linear axis in order to face the molding faces;
- wherein each mobile platen comprises:
- a pressure plate facing the molding face,
- a mobile plate,
- at least one hydraulic chamber, responsible for pushing the pressure plate to carry out a uniformly distributed clamping force against the molding face of the stationary central platen, the chamber, being located between the mobile plate and the pressure plate, connected to a hydraulic system through at least one duct for the insertion and evacuation of a fluid in said chamber in controlled flow and/or pressure conditions,
- a locking system that prevents linear movement of the mobile plate when the clamping force is applied, and
- a movement system of said mobile platen.
5 more elements
Dependencies are inferred from the claim text.