The composition and function of vacuum blister machine (2)
1. Compressed air equipment of vacuum blister machine
The pneumatic system can be composed of the molding machine itself with compressors, gas storage tanks, workshop supervisory circuits, valves, etc. The molding machine needs compressed air with a pressure of 0.4-0.5MPa, and various vacuum blister machines widely use piston air compressors. It can also be supplied by a large screw air compressor in the whole plant.
In addition to a large amount of compressed air used for molding, it is also used as part of the power for demolding, external cooling of the preliminary product, and manipulation of the mold frame and the movement of the sheet.
Functional characteristics of blister machine mold
2. Cooling equipment of vacuum blister machine
In order to improve production efficiency, the vacuum molded products often need to be cooled before demolding. The ideal situation is that the inner and outer surfaces of the part in contact with the mold are cooled, and it is best to use a mold with a built-in cooling coil.
For non-metal molds, such as wood, plaster, glass fiber reinforced plastic, epoxy resin and other molds, because they cannot be cooled by water, air cooling can be used instead, and water mist can be added to cool the outer surface of the vacuum molded parts.
Radiation energy of blister machine
If natural cooling is used in the production of vacuum blister machine, annealed parts can be obtained, which is beneficial to improve the impact resistance of the parts. Although water cooling has high production efficiency, the internal stress of the parts is relatively large.
Heating equipment for vacuum forming machine
3. Demoulding equipment of vacuum blister machine
Demolding is to remove the product from the mold, usually whether it is a concave mold or a convex mold. In most cases, the product cools and shrinks and adheres to the mold. Therefore, it is demolded by vacuum suction holes or blowing in the opposite direction.
The vacuum blister machine is especially suitable for molds with small demolding angles or concave molds. At the same time, the demolding mechanism is used to knock or shake the demold. Sometimes the sheet and the mold are coated with a release agent or the mold surface is sprayed with Teflon treatment. .
Opportunity success of blister machine
4. Control equipment of vacuum blister machine
The control system generally includes the control of various parameters and actions of instruments, meters, pipelines, and valves in the process of vacuum forming and finishing. Control methods include manual, electrical-mechanical automatic control, computer control, etc. The specific selection should be based on the initial investment labor cost, technical requirements, raw material costs, production and maintenance equipment costs and other factors.
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