C-Series IM 1 MAY 2014
6.0 OPERATING PRINCIPLES
The NOVATEC Model C rotary knife cutter model C is used to cut lengths of plastic extrudate. In
either the ON DEMAND or CONTINUOUS MODE.
ON DEMAND MODE: Plastic extrudate is fed through two inline bushings, which guide the plastic
through the cutter. The instant of cutting can be determined by a sensor, length of time or an
Encoder. Once the signal is sent to the PLC, the PLC processes the request and initiates the cut. A
servomotor rapidly accelerates the cutter head with attached blade(s) to rotate either 180° or 360°,
slicing through the extrudate. The cutter head then returns to its home position and waits for another
cut signal from the PLC.
CONTINUOUS MODE: Plastic extrudate is fed through two inline bushings, which guide the plastic
through the cutter. The instant of cutting can be determined by a length of time or an Encoder. Once
the signal is sent to the PLC, the PLC processes the request and initiates the cut. A servomotor
continuously rotates the cutter head with attached blade(s), slicing through the extrudate. The cutter
head rotates continuously at a speed sufficient to cut the desired length at the measured line speed.
7.0 INSTALLATION
1. Carefully unpack the cutter and any other components delivered with it. Check all
packaging for loose parts, documentation, and other included items. Carefully inspect the
cutter. Ensure that no wires, bolts, screws, terminals, or other connections have come
loose during shipping. Check to ensure that all moving parts are not obstructed by debris
or excess packing material.
2. You may require the following tools to complete the installation:
a. 16” or 18” adjustable wrench
b. Feeler gauges
3. All national and local electrical, building, and safety codes need to be followed. Proper
grounding of all equipment is important. Check the electrical wiring schematic for wiring
numbers and details. The following paragraphs describe installation of typical system
components. Some of them are optional and may not be required for your system.
CAUTION:
All machines must be grounded to prevent "shocks" from
static electricity that is generated by some materials as they are moved.
This is an extremely important step.
All electronics are susceptible (to varying degrees) to electrostatic damage
and, although as much protection as possible has been designed into the
system; this cannot completely eliminate upsets due to electrostatic voltage
being accidentally introduced into the electronic circuitry.
9
© 2015 NOVATEC Inc. All Rights Reserved
Document: C-Series 7 MAY 2015
