Method of converting a plastic container refurbishing machine to a plastic container reforming machine
A method for converting a refurbishing machine into a reforming apparatus. The apparatus reforms a portion of a plastic container using induction heating. The method includes the steps of replacing heating assemblies of the refurbishing machine with the reform heating assembly and the reform cooling assembly, respectively, using the existing equipment utilities of the refurbishing machine.
1. A method of converting a plastic container refurbishing machine into a plastic container reforming machine, wherein the refurbishing machine comprises a frame, a first turret with a first heating assembly and a second turret with a second heating assembly, the method comprising the steps of:
providing a reform heating assembly;
replacing the first heating assembly of the refurbishing machine with the reform heating assembly, wherein the reform heating assembly is capable of being heated to a temperature above 500 degrees F. and heating a portion of a plastic container to be reformed without contacting the plastic container, and wherein the reform heating assembly comprises:
a mount adapted to engage the frame and an insulated body fastened to the mount, wherein the insulated body comprises a top having a centrally disposed buttress extending therefrom; and
a power and a thermocouple connection; and
providing a reform cooling assembly;
replacing the second heating assembly of the refurbishing machine with the reform cooling assembly, wherein the reform cooling assembly comprises:
a forming die capable of being maintained at a temperature below the set temperature of the plastic out of which the container was formed and adapted to contact and reform the portion of the container;
a support housing a Peltier thermoelectric cooler above the forming die;
a heat sink above the support housing for removing heat from the Peltier thermoelectric cooler; and
a power supply and an adapter.
2. The method of claim 1 wherein the reform heating assembly further comprises a heat dispersion block having a groove into which is disposed an induction heater comprising a thermocouple connector and a power connector.
3. The method of claim 1 wherein the frame comprises a neck clamp for engaging the plastic container to be reformed, wherein the frame further supports the forming die as it travels along a workpiece support, wherein the workpiece support has a head portion and foot portion.
4. The method of claim 3 , wherein the reform heating assembly further comprises a cover plate engaging the heat dispersion block to form a single, monolithic unit and sandwich the induction heater within the groove.
5. The method of claim 1 , wherein the reform heating assembly further comprises an air gap between the top of the insulated body and the heat dispersion block on either side of the buttress and between the body of the insulated body and the heat dispersion block.
6. The method of claim 1 , wherein the insulated body has an information-providing color.
7. The method of claim 1 , wherein the reform cooling assembly is operably connected to a proportional-integral-derivative (PID) controller that controls the Peltier thermoelectric cooler to maintain the forming die at the temperature below the set point of the container.
8. The method of claim 1 , wherein the heat sink comprises a plurality of heat pipes.