| 摘要 |
Thermoforming apparatus adapted to accommodate molds of different lengths to form molded parts in a horizontal web comprises a vertically movable support. A mold base assembly carried by the support includes a flat-topped rectangular basic mold base secured horizontally to the support. A plurality of flat-topped straight mold base extension segments are removably secured together in side-by-side relationship forming a rectangular array. The array is removably secured to the basic mold base and support. A first vertically movable straight gate is secured to the free end of the basic mold base. A second vertically movable straight gate is removably secured to the segment at the free end of the array. Any one or more segments along with the second gate can be removed from the mold base assembly without disturbing the basic mold base and remaining segments. The second gate can then be attached to the segment at the free end of the shortened array. A manifold for passing a fluid coolant through the basic mold base and segments is provided with detachable branches connected to as many segments as there are in an array thereof at any given time. A cooperating mold assist box over the mold base assembly contains removable assist bars which hold the web in place during molding. The box has a fixed end wall and movable end wall cooperating with the gates to hold the web in place during molding. By means of the movable end wall the box can be adjusted in length to conform with the length of the mold base assembly.
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