Fig. 3
1. Color 2. Virgin material 3. Throat adaptor 4. Dispensing cylinder
5. Cover plate 6. Mixing zone 7. To production machine
4. Metering principle
The Dispensing cylinder
®
of the Conair TrueFeed is combined with a very precise adjustable stepper motor to
ensure that the additive output is accurate and consistent. The throat adapter (mixing chamber) is designed to
blend the main material and the additive homogeneously. Conair supplies a large range of machine throat
adaptors to fit injection molding machines. The most common mounting of the throat adaptor is between the
production machine and the machine hopper. In the figure below, a cross-section of the NST40 throat adaptor
can be seen.
Standard throat adaptor
During operation, the virgin material runs from the
machine hopper through the throat adaptor into the
machine. Inside the throat adaptor the virgin material
flow is divided into two streams by the cover plate. In
the space below the cover plate, the rotating cylinder
feeds additive material.
Additive material is added directly into the center of
the virgin material flow, just before it enters the
production machine. This is a great advantage over
metering devices that use batch pre-mixing that can
cause material separation. Separation of materials
results in an irregular additive flow into the
production machine.
2
5
1
4
3
6
7
5 Dual Feed TrueFeed Manual
Summary of Contents for TrueFeed
Page 4: ......
Page 41: ...APPENDIX A TrueFeed Print view INSIDE VIEW OF THE CABINET 37 Dual Feed TrueFeed Manual...
Page 42: ...APPENDIX B TrueFeed Wiring diagram 38 Dual Feed TrueFeed Manual Only with Dual TrueFeed...
Page 44: ...APPENDIX D TrueFeed General Dimensions 40 Dual Feed TrueFeed Manual...