Injection molding machine with articulated closure
AssigneeEngel Maschinenbau Gesellschaft m.b.H.
InventorHeinrich Leonhartsberger
Life of this patent
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Abstract
An injection molding machine has a machine frame, a stationary and a movable die platen, as well as a front plate supporting a closure mechanism. The front plate on which the movable die platen is supported via the closure mechanism and the stationary die platen are without bars and connected exclusively via the machine frame. The closing force occurring during the closing process and the lifting force occurring during the injection process between the front plate and the die platen are borne only by the machine frame. The movable die platen is guided on at least one rail supported on the machine frame. The closure mechanism is a toggle joint whose levers are rotatably articulated, on the one hand, at the movable die platen and, on the other hand, at the front plate.
Claims13
An injection molding machine comprising:
- a machine frame;
- a stationary die platen connected to the machine frame;
- a front plate connected to the machine frame at a location spaced from the stationary die platen, the front plate being connected without bars to the stationary die platen and exclusively by the machine frame so that closing forces occurring during a closing process and lifting forces occurring during an injection process between the front plate and the stationary die platen are borne only by the machine frame;
- at least two rails on the machine frame between the front plate and the stationary die platen;
- a movable die platen guided on the at least two rails and supported on the machine frame;
- and
- closure means connected between the front plate and the movable die platen for moving the movable die platen toward and away from the stationary die platen, the closure means comprising a toggle joint rotatably articulated between the movable die platen and the front plate;
- the movable die platen being resiliently mounted to the at least two rails for bracing the movable die platen against being lifted from the rails.
Dependencies are inferred from the claim text.