초록 ▼

An adjustable cam track for an injection molding machine includes a set of guides coupled to a moveable platen for guiding the movement of space defining surfaces which are movably mounted to a stripper platen as it moves with respect to the movable platen. A set of cam followers coupled to the spac

An adjustable cam track for an injection molding machine includes a set of guides coupled to a moveable platen for guiding the movement of space defining surfaces which are movably mounted to a stripper platen as it moves with respect to the movable platen. A set of cam followers coupled to the space defining surfaces cause relative movement of each pair of surfaces to release molded articles previously striped from the molds of the molding machine. A set of cam inserts engage the cam followers and are adjustably positionable with respect to the guides to adjust the point of release of the molded articles. Each guide includes a pair of guide walls forming a channel defining two limits of position of the cam follower engaged therein. Each cam insert is received between the guide walls and includes a pair of cam insert walls spaced apart by a distance about equal to the size of the cam follower engaged therein to define a path of movement for the cam follower between the two limits of position. Each cam insert includes a first toothed rack, while a second toothed rack is removably fixed to each guide and engages the first toothed rack to fix the position of each cam insert relative to each guide only at certain preselected locations to coordinate the operation of all the cam followers thereby avoiding any wear imbalance.

대표청구항 ▼

An adjustable cam track for an injection molding machine, said machine including a base, a first platen fixed to the base and having a mold cavity assembly, a second platen movable with respect to the base and said first platen and having a mold core assembly, a stripper platen movably interposed be

An adjustable cam track for an injection molding machine, said machine including a base, a first platen fixed to the base and having a mold cavity assembly, a second platen movable with respect to the base and said first platen and having a mold core assembly, a stripper platen movably interposed between the first and second platens and having at least one pair of space defining surfaces which together with the mold cavity and mold core assemblies defines at least one space for receiving plastic material injected therein to form at least one molded article, a first motive means for moving the second platen and the stripper platen away from the first platen to remove the at least one molded article from the mold cavity assembly, and a second motive means for separating the second platen and the stripper platen to remove the at least one molded article from the mold core assembly, the adjustable cam track comprising: a guide fixed to the second platen for guiding the movement of the stripper platen with respect to the second platen, a cam follower coupled to said at least one pair of space defining surfaces for causing relative movement of each pair of space defining surfaces to release the molded article from the molding machine, a cam insert engaging the cam follower, said cam insert being adjustably positionable with respect to the guide to adjust the point of release of the at least one molded article, the cam insert including a first toothed rack, and a second toothed rack removably fixed to the guide and engaging the first toothed rack to fix the position of the cam insert relative to the guide only at certain preselected locations.