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BFS/BFH Metering Feeders

BFS/BFH Metering Feeders
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METERING FEEDERS TPBM008-0408 B F S A N D B F H AT- T H E - T H R OAT M O D E L S BFS model ECONOMICAL FEEDING OF COLORANTS, ADDITIVES Conair feeders provide injection molders and extruders with a versatile, economical way to volumetrically meter colorants or other additives into the flow of virgin material directly at the throat of the processing machine. BFH model By metering additives directly at the throat, greater savings in material inventory and colorant can be achieved over traditional pre-colored or centrally blended material schemes. PRECISE METERING REDUCES COLORANT COSTS Each feeder is equipped with a throat adapter that fits between the material supply hopper and the processing machine throat. The feeder connects easily to the adapter allowing additives to be metered by an auger into the flow of material as it passes through the adapter. Up to two feeders may be mounted on one throat adapter. ■ For injection machines the feeder’s digital timer controls the metering motor during screw recovery. This supplies a consistent volume of additive in proportion to the flow of material into the machine throat. ■ For extruders the feeder meters continuously. The speed control of the extrusion models includes a voltage tracking circuit to slave the feeder metering rate to the speed of the extruder. Model for low/high throughput Model BFS and BFH feeders feature a compact size for metering additives to machines down to 0.01 gram per second or up to 160 lb. per hour. Model BFH provides high throughput metering up to 100 grams per second or 800 lb per hour. ■ Injection or extrusion control The precision injection control provides on-demand metering, based on a signal from the press. The extrusion control is designed to operate continuously with the extruder. E a s y, n o - t o o l s cl e a n o u t BFH models have removable supply hoppers and augers to allow fast clean-out for color changes. The standard BFS model has a stationary hopper, a removable supply hopper option is available. ■ Digital setpoint accuracy Easy-to-set thumbwheel switches provide digital accuracy for speed and time rate control. ■ Optional low level alarm Small add-on module offers audible and visual warnings if the additive level drops below the hopper sight glass.

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TPBF008-0408 METERING FEEDERS FEATURES/OPTIONS B F S A N D B F H AT- T H E - T H R OAT M O D E L S CONTROLS The extrusion control for the feeder is designed to operate continuously with the extruder, to meter a precise flow of additives at the desired rate. Push button thumbwheels set the speed of the metering auger. The speed of the feeder may be slaved to the extruder with a DC voltage follower circuit, driven by the extruder tach generator or armature voltage (0 to 600 VDC or 4-20 milliamps). (Shown is control with optional voltmeter.) The precision feeder control for injection molding...

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TPBS008-0408 METERING FEEDERS SPECIFICATIONS B F S AT- T H E - T H R OAT M O D E L S B D A* E C BFS augers MODEL AUGER SIZES BFS inches mm Performance Characteristics - pellets only Throughput@9 rpm, Injection† grams/sec Throughput@9 rpm, Extrusion† lb/hour Throughput@30 rpm, Injection† grams/sec Throughput@30 rpm, Extrusion† lb/hour Throughput@64 rpm, Injection† grams/sec Throughput@64 rpm, Extrusion† lb/hour Throughput@95 rpm, Injection† grams/sec Throughput@95 rpm, Extrusion† lb/hour Throughput@170 rpm, Injection† grams/sec Throughput@170 rpm, Extrusion† lb/hour Hopper capacity ft3...

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TPBS008-0408 METERING FEEDERS SPECIFICATIONS B F H AT- T H E - T H R OAT M O D E L S B‡ D A E C BFH augers MODEL AUGER SIZES BFH inches mm 1/2 X 1/2 3/4 X 3/4 1X1 1 1/2 X 1 1/2 2X2 {12.7 X 12.7} {19.05 X 19.05} {25.4 X 25.4} {38.1 X 38.1} {50.8 X 50.8} Performance Characteristics (pellets and free flowing powder*) Throughput@9 rpm, Injection† grams/sec 0.013 to 0.13 0.037 to 0.37 0.081 to 0.81 0.26 to 2.6 0.59 to 5.9 Throughput@9 rpm, Extrusion† lb/hour 0.10 to 1.0 0.29 to 2.9 0.64 to 6.4 2.1 to 21.0 4.7 to 47.0 Throughput@30 rpm, Injection† grams/sec 0.043 to 0.43 0.12 to 1.2 0.27 to 2.7...

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BFS/BFH Metering Feeders 4Pagine

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BFS/BFH Metering Feeders
4Pagine