Device for molding flash caps for catheters
OwnerRichard H. McFarlaneinventor
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Abstract
A plastics molding device is disclosed, which provides a plurality of cavities for the simultaneous molding of a plurality of flash caps, and including a punch die, operably supported relative to an outer end of each flash cap cavity, to punch a disc shaped member from a sheet of an appropriate synthetic material, and to position each disc in one of the cavities, in a proper position, to define integral outer end walls in the flash caps, when a suitable molten plastic material is injected into the respective cavities by way of appropriate runner grooves, in a generally conventional manner. Prior to injecting the plastic material, a core pin is advanced into each cavity in a simultaneous relation to the operation of the punch die, to clamp the respective disc members in outer ends of the cavities.
Claims26
A device fo molding flash caps for catheters, for fixed attachment relative to confronting upper and lower faces of respective upper and lower operable jaws of a conventional press, and including conventional indexing means for a strip of a suitable absorbant material to index the strip for a predetermined distance with each operation of the jaws between open and closed positions, said molding device including a top molding portion for fixed attachment to the upper face and a bottom molding portion for fixed attachment to the lower face, in a spaced apart relation to said top portion, in the jaws open position, at least one cavity of a predetermined size and configuration, opening upwardly through a bottom wall of said top portion, a core pin mounted in said bottom portion in axial alignment with said cavity, and normally disposed below said cavity in a retracted position, when the jaws are in the open position, and a punch die mounted in said top portion in axial alignment with said cavity and core pin, and disposed above the strip of material, in a retracted position, in a jaws open position, whereby, operation of the jaws to closed positions moves said top and bottom portions into an abutting relation and extends a tip end portion of said core pin to a predetermined depth inwardly of said cavity, and simultaneously advances said punch die axially inwardly, in an opposed relation to said core pin, to punch a disc shaped portion from the strip and to advance the disc portion inwardly of a top end of said cavity to a position against a tip end face of said core pin, whereby, a peripheral edge portion of the disc is integrally bonded in a top end of a flash cap as formed in said cavity, when a suitable molten plastic material is injected into a peripheral portion of said cavity, surrounding said core pin leading end portion through appropriate runner and gate means, and into engagement with said peripheral disc edge portion.
Dependencies are inferred from the claim text.