Back to results
US 6,419,870 B1Granted
Valve pin actuator
AssigneeSynventive Molding Solutions, Inc.
InventorsChristopher W. Lee, Mark D. Moss
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeSynventive Molding Solutions, Inc.
InventorsChristopher W. Lee, Mark D. Moss
Estimating the term…
A valve pin actuator is disclosed that includes a cylinder mounted to the clamping plate, a piston slidably mounted in the cylinder, and a valve pin assembly carried by the piston. A hydraulic or pneumatic circuit is provided for controlling the movement of the piston, and in turn translation of the valve pin between the seated and unseated positions. The valve pin assembly includes a first part removably secured to the piston so as to translate therewith, and a second part for receiving the valve pin and secured to said manifold. The actuator assembly enables removal of the clamping plate without removal of the valve pin assembly, and also adjusting of the valve pin without removal of the clamping plate. The assembly further provides a clearance between the piston and valve pin assembly, to accommodate expansion and movement of the manifold that would otherwise cause a side load to be exerted on the valve pin.
A method of disassembling an injection molding system including a mold, a clamp plate coupled to the mold, a manifold having at least one injection nozzle coupled thereto, the manifold being seated between the mold and the clamp plate, and a valve pin actuator mounted in the clamp plate and including a piston slidably and sealingly mounted therein having a valve pin coupled thereto so that movement of the piston causes axial movement of the valve pin, wherein the valve pin extends from the clamp plate and into the manifold, the method comprising the steps of:
A method of adjusting the axial position of a valve pin for use in an injection molding system including a mold, a clamp plate coupled to the mold, a manifold having at least one injection nozzle coupled thereto, the manifold being seated between the mold and the clamp plate, and a valve pin actuator mounted in the clamp plate and including a piston slidably mounted therein having the valve pin coupled thereto so that movement of the piston causes axial movement of the valve pin, wherein the valve pin extends from the clamp plate and into the manifold, the method comprising steps of:
Dependencies are inferred from the claim text.