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Drives And Motors

Drives system is an important part of the extrusion machine. It is very important to have the right kind of motor and drive combination that will help in saving energy and enable in improving the efficiency of the extrusion machine. Nearly 40% of the fuel consumption goes for generating electricity so as to convert the the energy into mechanical energy.

Types of Drives
The main types of drives that are commonly available are:
Drives And Motors
AC drive system: AC drive refers to the device used to control the speed of an AC motor. The AC drive system consist of a converter, a regulator and an inverter. In an AC driver the electrons alternates in direction as the voltage force alternates between pushing and pulling of electrons.

DC drive system: A basic DC drive controller consist of a drive controller and DC motor. In DC systems, electrons flow continually in one direction. The drive controller converts AC power to DC power. DC drive is the speed control system of the DC motors.

Hydraulic drive system: It consist of a constant speed AC motor driving a hydraulic pump which in turn drives a hydraulic motor and the associated controls. The entire package is often referred as the hydrostatic drive.

Qualities of Drive
In the drive system alternating current or the direct current is converted into the required energy form. The main work of a drive is to maintain a constant speed of the screw throughout because the fluctuation of the screw will cause changes in the dimension of the extrudate. Thus, constancy of speed is a very important requirement of an extruder drive. The drive must supply the required amount of torque and must be able to continuously adjust from zero to maximum screw speed.

Today's motor design and construction are highly refined. A wide range of machines are available in the market that allows the operator to start, stop, and change direction and speed of the motor. Industrial drives are available in a variety of configurations and combinations. When one selects a motor one mus t ensure that the drive suits the requirement in terms of the the motor type, horse power, input voltage , etc.
Extrusion Process
Hot Extrusion
Cold Extrusion
Warm Extrusion
Direct Extrusion And Indirect     Extrusion
Hydrostatic Extrusion
Extrusion Materials
Plastic, Ceramic, And Drug Carriers
Polymeric Materials
Plastic Extrusion
Sheet / Film Extrusion
Blown Film Extrusion (Film Blowing)
Overjacketing And Tubing Extrusion
Extrusion Coating
Compound Extrusions And Foam      Extrusion
Profile Extrusion
Crosshead Extrusion Process
    (Wire & Cable Coating)
Monofilament Fiber Extrusion
Extrusion Reprocessing
Plastic Extrusion Machines
Film Plant
Mono Layer Blown Film Plant
Extrusion Coating Lamination Plant
Box Strapping Line
Synthetic String Plant
Monofilaments Plant
Power Transmission Equipment
Forming Internal Cavities And      Drives
Types Of Plastic Extruders
Basic Extruder Machine
Single Screw Extruder
Twin Screw Extruder
Ram Extruder
Drives And Motors
AC Drives and Motors
DC Drives and Motors
Hydraulic Power Drives and Motors
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