System for injecting a thermoplastic material
AssigneeRunipsys Europe
InventorEric Deriche
Life of this patent
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Abstract
The disclosure relates to a system for injecting a thermoplastic material in the fluid state, including: a dispenser adapted to be maintained at an injection temperature higher than the temperature limit at which the material is in a fluid state; an injection nozzle defining at least one portion of a transition passage; a stopper mounted inside the transition passage so as to slide between a blocking position and an opening position thereof; and control means for alternately sliding the stopper, wherein the control means comprises a jack with a rod parallel to the sliding direction of the stopper, and which is secured in an offset manner on the dispenser via a flattened beam, and a lever arranged so as to tilt about an axis so as to transmit the movements of the jack rod to the stopper.
Claims20
A system for injecting a thermoplastic material in the fluid state into a molding cavity, the system comprising:
- a manifold operably held at an injection temperature greater than the final temperature beyond which the material occurs in the fluid state, the manifold including a distribution channel and at least one thermoplastic material outlet;
- an injection nozzle defining at least one portion of a transit passage an entrance of which is fluidically connected with the outlet of the distribution channel, and an outlet of the transit passage opening substantially into the molding cavity;
- a nozzle gate mounted within the transit passage so as to slide between a position closing same and a position opening same;
- a power cylinder operably causing the nozzle gate to slide alternately;
- the power cylinder including a rod parallel to a sliding direction (X) of the nozzle gate, secured in an offset fashion to the manifold through a flattened beam, and a lever arranged to tilt about a trunnion so as to transmit to the nozzle gate the movements of the cylinder rod.
A sliding control device for a nozzle gate of an injection valve for an injection system, the device comprising:
- a flattened beam holding a power cylinder in an offset position on a manifold;
- and
- a lever arranged so as to tilt about a trunnion so as to transmit to the nozzle gate the movements of a rod of the cylinder.
An injection molding system comprising:
- a pivot;
- an elongated member tiltable about the pivot;
- a nozzle gate coupled to the elongated member and being linearly moveable in response to the tilting thereof;
- and
- an elongated arm also tiltable about the pivot, ends of the arm being coupled to the elongated member to allow some relative movement therebetween, the arm and member being parallel in at least one condition.
Dependencies are inferred from the claim text.