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Forming Platform Thermoforming Machine
The forming station should include all elements necessary to prestretch the sheet form in, coot it and eject it form the mold. Some of these elements include: l Substantial guide-rods are needed. For vacuum molds greater than 12 in or 300 mm by 24 in or 600 in dimension and for all pressure forming applications, four guide-rods are recommended. Cup Making Machine l Clamp tonnage should be in proportion to mold size, that is: Typically >1001b/in or 0.7 Mpa for straight vacuum forming, and Typically >2001b/in or 1.4 Mpa for pressure forming. l The press frame pit should not be deeper than 4 ft or 1.3m. In many areas, pits dee[er than this must be entered by people wearing self-contained breathing apparatus. l The overheaded press frame structure should be robust enough to support such elements as: The entire weight of the mold, if it is desired to mold in an “up”position, In-mold trimming components including cylinder and framework, Ancillary nold elements such as: Plug assist cylinder and frames, Ejector cylinders and frames, and Cavity isolator cylinders and frames, and Pressure boxes. l The press should allow for easy mold removal and maintenance. l The press platens should allow for easily adjustable mold daylight. l There should be adequate headroom for overhead ancillary equipment. l There shuould be adequate space around the presses for vacuum lines,vacuum and air pressure lines, and adequate mold tempreature hoses and mamifolds l There should be adequate provision for prestretching and billowing, sheet lock-down and stripping and ejecting. l There should be allowance for free surface tempreature control, including chilled air. l There frame should be adequately reinfored and gusseted to carry heavy molds, ancillary hardware, and day-to-day vibration and shaking. l There should be adequate provision for part removal and trim or web takeway Printing Machine The drive system that raises and lowers the platens is the key to forming station performance. Depending on the application, the drive unit can be as inexpensive as a simple air cylinder or as complex as the hydromechancial clamps used on&n
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