THERMOFORMING APPARATUS WITH THE USE OF A PLASTIC SHEET CASSETTE

摘要

A plastic sheet cassette includes a first frame member pivotably coupled to a second frame member, and a plastic sheet is fixedly supported by male and female parts provided on the first and second frame members. A thermoforming apparatus includes a cabinet, a heating source, a vacuum source, a platform, and a fixing frame that supports the cassette so as to be removable, and is vertically movable between the heating source and the vacuum source in the cabinet. The fixing frame can be stopped or released at any desired level in the cabinet and supports the cassette so that the sheet is heated at the upper level by the heating source and is brought into close contact with a prototype at the lower level by the vacuum source for making a mold having the same shape as the prototype.

主权项

1. A thermoforming apparatus with use of a plastic sheet cassette, the apparatus comprising:
a cabinet; a heating source disposed in an upper portion of the cabinet; a vacuum source disposed in a lower portion of the cabinet; a platform having perforations, which is disposed above the vacuum source and allows a prototype to be placed on the platform; a plastic sheet cassette for fixedly supporting a plastic sheet in a detachable way; and a cassette fixing frame for supporting the plastic sheet cassette in a removable way, vertically movable within the cabinet between the heating source and the vacuum source, wherein the cassette fixing frame has at least right and left cassette slide supports into which right and left frames of the plastic sheet cassette are slide-fitted, respectively, and rear cassette supports coupling the right and left cassette slide supports to each other at rear ends of the cassette slide supports, and wherein the cassette fixing frame is provided with operation handles for operating the cassette fixing frame to move vertically, the operation handles being mounted to the cassette fixing frame through supports to extend outside the cabinet.