Complete injection machine
Based on PP design but adapted:
In order to save materials and space we changed the frame to a standard frame for all machines. An extra feature is that the heated parts of the injection machine are surrounded by the frame so it is safer to use. By sliding the foot (3x3cm square bar ) into the frame that has a 4x4 square bar and locking it into place the machine is secured.
THE MOULD COUPLING: VALVE
Because we use small moulds for this machine we need to change them often while the injection machine is heated and the plastic melted. To avoid a mess with dripping plastic we added a sliding valve so we can disconnect the moulds propperly. We also made a joint using a dubble M-M nipple (metric 16) to srew and unscrew the moulds propperly. The coupling can be dismounted witch allows the heated tube to be accessed.
We used a 4x4cm square bar in stead of 2 flat strips as a part of the leaver system to stabilize the pushing rod.
Our hopper is made out of 2 parts: the original hopper sides are cut out of a 1mm metal plate as one piece and bent into their final shape. To ensure a tight bottom fit to the barrel we use a metal plate with a 30mm diameter hole that slides over the barrel.
THE HOPPER SAFETY VALVE
We installed an extra safety valve just above the hopper unit so it can be closed easily when required. This prevents hot wax from escaping when the plastic is heated. It is also a pre adaptation to fit an air suction system to eliminate fumes formed during the heating proces.
THE HEATING CONFIGURATION
We deiced to change the 1 vs 3 heated elements configuration to a 2 vs 2 setup to get a better influece on melting temperatures.
Because the steel pipe is heated to high temperatures (150-200°C) and we want to limit heat distribution through the frame we isolated the heated parts.
The machine has a TYPE E plug and works on 230V
moulds are not included
Shipping price is not included and can be calculated on request.
more information on www.sheeponwheels.com