4V Sheet Pressing System Jason Knight & Mark Bachrach
Sheet Press: Before V4 Precious Mark Jason Plastic Prototyped several sheet Designed a sheet press as Designed a skateboard presses and documented part of his Masters. deck press as part of his lots of variations on bachelors and a small forums. sheet press.
V4 Goals Goals we identifjed at the -Sheet size: 1220x1220mm start of V4 -Thickness: 5-18mm -Quantity: 4 sheets per day at 12MM -Types of plastic: HDPE, PP, optionally PS -The machine is safe and friendly to use -Min cycles before small repair: 50 -Min cycles before big repair: 200 -Price for materials: €4000
Our Approach Conceptual change between previous versions and this Community version was to begin to Marks Prototypes look at producing sheets Presses On Forums as a system instead of a stand alone press. We began by using Marks press as a foundation and New System pooled the observations from the other presses in to identifying how the new system should work. Precious Jasons Plastic Presses Prototype
Areas Of Improvement -Simpler to build mould. -Multiple moulds in the system to allow for simultaneous heating and cooling. -Never have to carry the full weight of the mould to make it more user friendly. -A custom oven to accommodate for larger moulds. -Develop a fume extraction system. Ventilation Press Oven Roller table
3D Modeled A System
Physical Prototype
Began Testing
Goal Status Goal Status Sheet size: 1220x1220mm Achieved: Producing 1310x1310 Part-Achieved: So far we have Thickness: 5-18mm made 6-12mm Achieved: 2 Hours per sheet Quantity: 4 sheets per day at with 1 hour pre heat at start 12MM of day Types of plastic: HDPE, PP, Achieved: Made multiple of optionally PS each type Achieved: Added fume The machine is safe and extraction and never have to friendly to use lift more than 30Kg during operation Min cycles before small Still in progress repair: 50 Min cycles before big Still in progress repair 200 Achieved: Estimated 3-4000 in Price for materials: €4000 NL
Next Steps -Duration test system -Refjne CAD model for oven and press -Dive in to insulation types -Changes to oven -Insulation Types -Fan position -Size -Integrate extraction -Fully synchronize fasteners, sheets and extrusions used across whole system -Make a 30 day build plan -Make fjnal BOM and order materials
Pilot Original Plan: Go to Morocco now to implement a Pilot Project. What happened?: Bureaucratic reasons, unable to get funding right now. New plan: Make version 4.2 here fjrst. Pilot either just before or after DDW 2019.
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