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[Model #45 | Model #50 | Model #55 | Model #60 | Model #70 | Model #75]

The model #70 Mini-Jector answers a long-standing need for a precision insert molding machine that is both compact and user friendly. A vertical down acting 10 ton clamp with a vertical injection unit permits the use of conventional molds with a center sprue bushing as used in horizontal machines. This configuration also allows for the use of hot runner molds.

The machine has a formica top level with the clamp that allows the machine operator space to place inserts or tools adjacent to the work area. The machine is designed with a "sit-down" type stand that is very similar to a desk for maximum operator comfort.

The compact design (12 square feet of floor space required) allows the placement of the machine near assembly areas to avoid having to "batch mold" the parts. The machine can be integrated into a product assembly line.

The machine is offered in two injection capacities. The option of either a one or two ounce capacity injection unit permits molding either small delicate parts or fairly large connectors or plugs. The machine can be built as a single station unit or with an in-out single station shuttle table for loading convenience.

CLAMPING UNIT

The Mini-Jector has a direct hydraulic clamp that is locked when closed through a system of check valves. The machine has a both a clamp axis potentiometer and a second mold protection limit switch to insure that the machine will not cycle with any obstruction in the mold.

INJECTION UNIT

The compact injection units feature an efficient direct hydraulic screw drive, a front loading hopper with a swivel permitting dumping material through a dump tube when changing resins. The radiused nozzle can be supplied with ether a straight orifice or a shut-off non-drool design. Selectable screw decompression, sprue break, plus adjustable screw and injection speeds offer maximum versitility. The high torque drive permits molding any type of thermoplastic resin.

HYDRAULIC UNIT

The 5 HP motor drives an immersed 5 GPM gear pump for reliable quiet operation. A heat exchanger is provided in the 12 gallon reservoir, as is a return line filter with a monitor connected to the machine alarms. All components are accessible for ease of maintainance. All pressures are controlled with an electronic proportional pressure valve.

CONTROL UNIT

The machine's sequences and parameters are controlled by an extremely guide Mitsubishi PLC and an Exor fluorescent operator interface. All positions, temperatures, hydraulic pressures, and times are set in the screen. The controls settings can be stored in the machine's memory for future selection. Up to 100 set-up "recipes" can be stored. A variety of alarms and safety interlocks are part of the machine software package, and were designed with input from customers. The safety gate is automatically opened during mold opening, and has a positive monitored mechanical safety, a monitored hydraulic safety plus dual electrical interlocks. A selectible automatic temperature cutback will reduce heats if the machine is idle.

Technical Data

CLAMPING UNIT
Clamp Tonnage-Maximum	10 Tons
Mold Opening Stroke-Max	6"
Mold Closing Force-Mold Protect	297 Lbs.
Open Daylight-Max	10.75"
Platen Size-Depth x Width	8.50" x 24"
Distance between Tie Rods-D x W	4.75" x 17.75"
Standard Mold Size W x D x H	8" x 8" x 6.5"
Hydraulic Ejector Stroke	1"
Hydraulic Ejector Stroke with Optional Shuttle	1.75"
Hydraulic Ejector Force	1179 lbs.

INJECTOR UNIT	#70-1	#70-2
Screw Diameter	875"	1.125"
Maximum Screw Stroke	3"	4"
Maximum Screw Displacement In 3	1.80"	3.98"
Maximum Shot Size-Polystyrene	1 oz.	2.15 oz.
Maximum Injection Pressure	16,000 psi	16,593 psi
Maximum Screw RPM	254	238
Screw Recovery Rate-Ounces/Seconds	0.12	0.20
Plasticizing Capacity-Lbs. per hour Polystyrene	28	45
Maximum Injection Rate-Cubic inches/Seconds	2.47	2.39
Total Heater Band Wattage 2400	2400	3000
Screw Torque-Lb. Inches	1253	1765

GENERAL SPECIFICATIONS
Motor HP @ 1725 RPM	5
Pump Delivery-GPM	5.15
Reservoir Capacity	12.5 gals.
Maximum Current Draw 230V	26.7 Amps
Machine Dimensions w x l x h	48" x 36" x 85.5"
Machine Weight ( approx.)	1500 lbs.