Envolve your standard injection moulding machineinto a multi-shot capable machine
The conventional rotary table is a positioning device, fixed on the machine platen. It is equiped with an electrical servomotor for fast, precise mould rotation, and PLC control with and is engineered to suit the host machine.
If Plasdan supplies the injection unit as well the PLC and controls for both the rotary table and the injection unit can be shared.
The C-Frame construction often enables the changing of rotary stack moulds while in the press.
The C- Frame is a support system for a rotary cube mould that allows the central block of the cube to rotate through either 90º or 180º depending on requirements, transferring the previously injected parts from one processing station to another. The philosophy behind this concept is to allow simultaneous operations during the cycle, thereby obtaining very low cycle times in a standard injection moulding machine. More specifically, the cooling and the injection of the part can occur simultaneously with the injection of the various componentes.
The opening / closing movemnet of the mould also allows for simultaneous rotation of the cube mould, saving cycle time due to these parallel movements. Directly supported by the moulding machine the C-Frame is fixed on one of the machine platens, also being supported on the machine frame if necessary.
The horizontal rotary table is mounted on linear rails in the mould mounting area of the injection mounding machine, and then moves via a rack-and-pinion to maintain it equidistant to the machine moving and fixed platens.
The horizontal rotary table the accepts either a 2- or 4-face cube mould to rotate through 90º or 180º, depending on the mould requirements, transferring previously injected parts from one processing station to another.
The main difference between the horizontal rotary table and the C-Frame is that the horizontal rotary table is mounted directly on the machine whereas the C-Frame is mounted on the mould, making it independent of the injection moulding machine used.
The Plasdan LIFT & TURN system is used to move a plastic part to a second cavity in the mould so that it can be over-moulded by a second type of material or colour. This is accomplished by a linear movement of the plastic part lifting it out of the cavity where it was moulded, then rotated to a second cavity by the use of a servo-motor and then a second linear movement to place the part in the second cavity, hence the name “LIFT & TURN”.
The main advantages of the Plasdan LIFT & TURN system are:
• Less rejected parts as the plastic is always in contact with some part of the moulding parting line
• Reduction of cycle time compared to manual or robot transfer of parts
• Complex shaped parts can be over-moulded on both sides
• Can be used in combination with other technologies for in-mould assembly
• Easily interfaced with the injection moulding machine
• Easily assembled and removed from the injection moulding machine.