MLG "Little Guy" Concentrate Auger Feeder
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MODEL MLG "LITTLE GUY" CONCENTRATE AUGER FEEDER with AUTOMATIC SPEED CONTROL REMOVABLE HOPPER JUNE 26, 1998

Model MLG CONCENTRATE AUGER FEEDER with 'AUTOMATIC SPEED CONTROL' MAGUIRE PRODUCTS, INC. 11 Crozerville Road Aston, Pennsylvania 19014 610-459-4300 FAX # 610-459-2700 Page 1

ASSEMBLY AND INSTALLATION INSTRUCTIONS Your unit consists of 4 separate parts or assemblies: 1. The REMOVABLE BAFFLED FLOW CHAMBER. (stainless steel with windows). 2. The BASE PLATE / TOP PLATE / DRIVE UNIT assembly (with hinged window). 3. The HOPPER assembly; with feed auger. 4. The CONTROLLER. 1. Assemblies 1, 2 and 3 have been shipped to you assembled. The first thing to do is to take them apart. During disassembly, PAY ATTENTION so that you can put it back together again CORRECTLY. 1.1 Locate and unlatch the "butterfly" latch under the rear of the hopper. Lift and slide the hopper back...

Slide the BAFFLED FLOW CHAMBER back into place. must be installed before the HOPPER. Reinstall the HOPPER assembly. Be sure that the auger properly engages the drive coupling. Secure hopper with latch.

LITTLE GUY FEEDER ASSEMBLY PICTURE

START UP PROCEDURE AT THE CONTROLLER: 1. Plug the "CONTINUOUS POWER" (black) cord into a standard 120 volt continuous power source. Plug the "SIGNAL" (gray) cord into outlet that is energized only when the screw is turning. This SIGNAL outlet will provide a voltage signal to an internal electronic relay. (SIGNAL voltage can be from 24 to 240 volts. The "screw return", or "SIGNAL ON" time, must be at least one (1) second long. If you are not sure this is always the case, then it is advisable to select another source of power for the signal. INJECTION time would be an excellent choice for a...

NORMAL OPERATION The following is what to expect during normal operation. With MAIN POWER cord plugged in, NO power to the SIGNAL cord, Switch on CYCLE: The display should read zero ( 0) The motor light and signal lights are OFF The motor is NOT running. IN CYCLE: Nothing will run until the SIGNAL cord gets power. cord is powered, the signal light will be lit. The first time the signal cord gets power, the unit will start running at about 10 rpms and will count down starting from the number set on the counter. When the count reaches zero ( 0), the motor will stop. On all successive cycles,...

CYCLE TIME: The motor will start to run about 1/3 (.3) second after a signal is received. If the Signal is less than about 2/3 (.6) seconds long, then the motor will stop and the processor will NOT consider this as a valid cycle. No recalculation of motor speed will occur. If the signal is over 2/3 (.6) seconds long, then the motor will run for at least 2 seconds even if the signal goes away. This allows time for speed adjustments to occur. On longer cycles, over 2 seconds, the counter should count down to zero and the motor should stop within the 1/2 second period before the end of the...

FORMULAS FOR SETTING THE COUNTER CONCENTRATE FEEDER INJECTION MOLDING (Cycle Mode): 1. Determine the WEIGHT of the entire shot IN GRAMS. This is the combined weight of the part or parts plus the runner, if any, that is molded each cycle. 2. Determine the POUNDS per 100 of color required. This is the pounds of color that you use for each 100 pounds of natural material used. 3. Determine the METERING RATE for each color in grams/100 counts. Metering rate is the weight in grams of color that is metered when the counter is set to 100. See the next page for instructions on determining Metering...

DETERMINING METERING RATE Different colors have different bulk densities and different flow characteristics. To compensate for these variations and insure ACCURACY, a METERING RATE must be determined for EACH COLOR. 1. You may use a feeder that is mounted on a machine or you may have a seperate feeder set up on a bench top for this purpose only. You may use one feeder to determine metering rate then apply this information to all feeders that are the same model, (i.e. same auger size and same gearbox drive motor). Have the black power cord plugged in. The process machine does not have to...

PRINCIPLE OF CONTROLLER OPERATION The MAGUIRE Digital Controller provides the precise speed regulation and metering control necessary to assure absolute accuracy over color usage. The Controller signal cord is plugged into an outlet that is energized only when the process machine screw runs. During each screw return cycle, the motor runs and color is metered into the throat of the process machine. Since metering rate is directly related to motor output shaft rotation, accuracy is obtained by controlling the exact degree of rotation of the drive motor. The unique Maguire Products Digital...

CONTROLLER OPERATION IN CONJUNCTION WITH OUR REGRIND FEEDER All MAGUIRE Color Feeders are designed to work in conjunction with our REGRIND Feeder which may be purchased separately at some later date if the handling of REGRIND at-the-throat becomes a concern. This Regrind Feeder would be installed on the process machine at the base of the material hopper just above the throat. When used with our CONCENTRATE COLOR Feeder, the REGRIND Feeder adaptor frame would be mounted directly on top of our COLOR Feeder adaptor frame. The regrind would then enter the flow of virgin resin at the same height...

PRINCIPLE OF CONCENTRATE FEEDER OPERATION The MAGUIRE CONCENTRATE AUGER FEEDER is a rugged industrial auger feeder designed to meter precise quantities of color concentrate very accurately into the main flow of virgin material directly above the throat of your process machine. The stainless steel baffle chamber and base plate form a sturdy, low profile, adaptor assembly. This assembly must be drilled with the proper bolt pattern and then mounted to the throat of your process machine where the main material hopper is currently mounted. The material hopper is rebolted to the top of the...

POWDER FEEDER OPTION For those who wish to meter powder or other materials prone to bridging, we offer a modified hopper at additional cost, our powder feed option. This consists of a motor driven agitator that mounts on the hopper. This motor turns at 4 RPMs and is of limited torque for safety. If your unit is so equipped, note the following. We recommend that the agitator motors be powered only when the auger is turning. On a cycling operation, (injection molding), this is when the controller signal cord is energized. If it suits your application better, you may wish to power these motors...