basic units of vacuum forming machine

1.1 Basic units:

1). PLC control system with touch screen

2). Independently controllable heating zones

3). Pneumatically powered clamp frame

4). Automatic cooling system with cooling fans, industrial chiller and spray guns

5). Automatic vacuum forming system

6). Steel components coated with polyurethane

7). Far infrared ceramic heating bricks or Halogen heater tubes is optional. Halogen heater tube provides rapid heat response with a greater range of control to form challenging shapes and material, infrared ceramic heating brick has longer service life.

1.2 Main features:

1). Processing flow: Manual Loading Sheet → Clamping Frame Fall → Heating → Pre-stretching → Mold Rise & Vacuum Forming → Cooling → Air Blowing & Releasing from mold → Clamping Frame Rise → Manual Pickup Product.

2). This machine consist of Heating system, Forming system, Vacuum system, Pneumatic system, Cooling system and Control system.

3). Heating & temperature control system: Adopts fully enclosed furnace to reduce heat loss. Adopts Halogen heater tubes with independent temperature controller to ensure the sheet is heated uniformly over its entire surface area and throughout its thickness. Temperature controller for the halogen heater tubes is integrated circuit voltage regulator, means “one to one” control mode, different voltage acquires different temperature. The voltage is PLC controlled and voltage setting is operated on touch screen.

4). Sheet level (Auto-level): A photoelectric beam (photoelectric eye) is activated under the sheet during the heating cycle. If the sheet sags down and breaks the beam, then a small amount of air is injected into the bottom chamber under the sheet, thus lifting the sheet to stop it from sagging until the sheet clears the beam.

5). Plug assist is optional: Plug assisted vacuum forming is used when straight vacuum forming is unable to distribute the thermoplastic sheet evenly to all areas of the mold. Where a deep draw is required, a device know as top plug is used to push the sheet into the mold before the vacuum is applied to help spread the sheet out more evenly.

6). Cooling system equipped with air-cooled industrial chiller, spray gun and low noise centrifugal fan. Spraying mist is available whereby nozzles are attached to the fans and a fine mist of chilled water is directed onto the sheet.

7). Apply air pressure to release the molding from the mold, damage of the molding in the releasing process is avoided.

8). Machine cycle status is clearly visible at a glance and all parameters can be adjusted in real time without interrupting the current cycle.

9). The PLC program offers saved memory for project to project recognition, that means when processing the same project in next time, there is no need to set the operating parameters again, just touch the project name or project code.

10). Imported electrical and pneumatic components from International well-know manufacturer make the machine features reliable quality and wearing well.