Milacron technology used in screwdrivers
MilacronMcKechnie Plastic Components has integrated turning-stack-mold technology from Ferromatik Milacron Europe into its multishot screwdriver molding operation in Easley, S.C.
Milacron Inc. of Cincinnati said McKecnhie invested more than $1 million in the turning-mold system, and two K-Tec injection presses, each with a clamping force of 450 tons.
McKechnie can turn out 4 million handles for the Thrifty-brand screwdrivers each month for Stanley Works.
The presses run 24 hours a day, seven days a week, using 32-cavity revolving molds.
The cube stack mold was made by toolmaker Foboha GmbH of Haslach, Germany. The cube design provides a hold station between the first and second shots, to allow some cooling and to improve control of the internal diameter of the handle. Stanley inserts the screwdriver bar at its factory.
The cube also reduces cycle time because parts can be ejected while the mold is closed.
The original Thrifty has an extruded, two-color straight handle. The redesigned, injection molded handle is trilobed, made from black and yellow polypropylene.
Contact Milacron at tel. (888) 645-2276, fax (513) 536-2441.
Trumpf showcases precision welding
Trumpf Inc. showed its PowerWeld equipment for repairing molds during the Plastec West show, held Feb. 19-21 in Anaheim, Calif.
PowerWeld is a sit-down workstation that uses welding lasers to restore molds.
The company, headquartered in Farmington, Conn., also showed its ProfiWeld workstation designed for welding small parts, the HL 220 pulsed solid-state laser for precision welding and cutting and a compact laser welding system called VectorMark.
Tel. (860) 255-6112, fax (860) 255-6424.
Apex, Milacron offer rebuilding service
Milacron Inc. and Apex Plastic Technologies are rebuilding and remanufacuring outdated Bucher thermoset injection molding machines.
Bucher owners can upgrade their presses to the latest hydraulic and control technologies at about half the cost of a new machine, the companies said.
The service recently saved an undisclosed major automotive molder hundreds of thousands of dollars by rebuilding three 17-year-old Bucher TS machines. Each press was taken apart down to the frame.
All components were rebuilt or replaced. Remanufacturing included grinding platens, polishing rods and rebuilding clamp cylinders, stuffers and proportional injection units. Each machine also was plumbed with a new hydraulic system, with a variable-volume pump for energy valves.
Milacron is based in Cincinnati. Apex is in South Elgin, Ill.
Tel. Apex at (847) 931-9838, fax (847) 931-9772.
Arburg's Multilift HV combines features
Arburg GmbH + Co. of Lossburg, Germany, showed a new variety of its Multilift robot, the HV, at the Fakuma show, held late last year.
The Multilift HV blends features of the existing Multilift version H, with horizontal gripping, and the V version, with vertical gripping.
The HV has an overhead gantry for the longitudinal and lateral axes. The robot is mounted transversely to the machine axis, and gripping is done horizontally from the back of the machine.
The HV can lift parts weighing 44 pounds.
The robot has five axes of motion, four of them driven by servo-electric power. That gives faster operation, because two axes of motion can operate at the same time.
Arburg's U.S. headquarters, Arburg Inc., is based in Newington, Conn.
Tel. (860) 667-6500, fax (860) 667-6522, e-mail [email protected]
Boy introduces first electric screw drive
Small-machine supplier Boy Machines Inc. is offering its first electric screw drive, now available on all Boy A-series injection presses.
Boy, based in Exton, Pa., is the U.S. headquarters of Dr. Boy GmbH of Fernthal, Germany. The family-owned company had been committed to fully hydraulic injection molding machines.
George Dallas, national sales manager, said that whether a customer needs a servo-electric screw drive depends on the specific molding demands.
``For typical applications, our standard hydraulic drive is equally efficient and more economical. But a growing number can benefit from the added precision of our more complex servo-screw drive,'' he said.
Because it runs independently, an electric screw drive operates simultaneously with the clamp and ejector functions.
Boy said that is especially attractive when a large volume of resin must be plasticized at low rate of screw revolutions per minute.
Since the screw-recovery portion of the injection cycle consumes the most power, the company said, the electric drive provides energy savings and reduced cycle time.
The new screw drives' advantages include quieter operation, better melt homogeneity and more efficient melt processing with less shear, according to the company.
Boy will show the new electric-screw-drive presses at NPE 2003, set for June in Chicago.
The A-series includes clamping forces of 14.2, 33.7, 60 and 100 tons.
Tel. (610) 363-9121, fax (610) 363-0163, e-mail [email protected]
Gluco branches out to horizontal presses
Vertical-clamp injection press maker Gluco Inc. of Jenison, Mich., now offers a full line of horizontal-clamp machines, the SM presses.
The hydraulic presses come in clamping forces of 50-550 tons, with a top injection rate of 77.7 ounces of polypropylene. Independent hydraulic circuits run clamping and injection.
Features include closed-loop control, knock-out and core pull on the fly and precision cushion control on injection.
Gluco said the machines also can be configured to do two-color and two-material molding.
Tel. (616) 457-1212.