Apparatus for thermoforming hollow articles
AssigneeMaschinebau Gabler GmbH
InventorsHorst Merklinghaus, Herbert Voske
Life of this patent
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Abstract
An apparatus for thermoforming hollow articles including forming molds and die cutting molds disposed in spaced-apart relationship wherein the web or sheet of thermoplastic material is sequentially moved or indexed in an integrated operation whereby an article formed in the forming molds is advanced into proper alignment with respect to the die cutting molds and die cut, and subsequently withdrawn to an appropriate storage assembly. The forming molds and die cutting molds being positioned on upper and lower platens.
Claims13
In a thermoforming apparatus for forming a hollow plastic article from a sheet of thermoplastic material including upper and lower platens having upper and lower forming molds, respectively, means for heating said sheet of thermoplastic material to thermoforming temperatures, means for advancing said heated sheet of thermoplastic material through said thermoforming apparatus between said upper and lower platens, and means for relatively moving said upper and lower platen means to form said hollow article with said upper and lower forming molds, the improvement comprising:
- an upper finishing tool positioned on and mounted to said upper platen and a cooperating lower finishing tool positioned on and mounted to said lower platen, said finishing tools being spaced-apart from said forming molds, and said thermoforming apparatus including a slide member for sealing said finishing tools in an air tight manner, said finishing tools cooperating to remove said hollow article from said sheet of thermoplastic material prior to withdrawal of said sheet from said thermoforming apparatus and means for cooling said finishing tools.
Dependencies are inferred from the claim text.