Plastic Equipment HPM

INJECTION MOLDER:  - Last updated June 2010

1993 500 Ton HPM, 48 oz Injection Molding Machine

Serial# 92327. 3 barrels, endcaps, tips, valves, seals and

spare hydraulic components.

From the Technical Specifications of the custom manual:

Clamp:
Clamp force, US tons: 500
Clamp opening Force, US tons: 29
Clamp stroke, mox, in: 38
Daylight, open, in
   Without ejector assembly: 60
   With ejector assembly: 50
Platen size, h x v in: 50 x 50
Distance between tie rods, h x v, in: 34 x 34
Tie rod diameter, in: 5.5
Clamp speed, ave, in/sec
   High speed, closing, adj: 35
                         opening, adj 36
   Mold setting, closing: 3.5
                          opening: 3.5

Hydraulic Ejector:
Force, US ton, hydraulic: 12
Ejection speed, in/sec: 9
Reset speed, in/sec: 14
Storke, in: 6

General:
Conveyor opening, w x h, in: 54.6x24
machine dimensions, l x w x h, in: 375 x 90 x 128
Machine weight, lbs: 58,200
Hopper capacity, lbs: 150

Injection:
Injection capacity, cu in: 89
Injection capacity, GPPS, oz; 48
Plasticizing capacity (1), continuous, lbs/hr: 790
Recovery rate (1), oz/sec; 3.5
Injection pressure, max, psi: 20,000
Injection rate (2), cu in/sec: 39.1
Screw diameter, in: 3
Barrel L/D ratio: 20:1
Screw torque / speed (3), in-lb/rpm
   Range 1: 31,960/150
   Range 2: 18,900/255
Barrel heating capacity, 3-zones, kW 35
Nozzle heating capacity, std, W: 1300

Electrical System:
Electric motor, hp/rpm One (1), Double-End-Shaft: 100/1800
Power supply, std, v/ph/Hz: 460/3/60
Full load amps, max, 460 V: 175

Hydraulic System:

Pump Function Maximum PSI GPM Nominal
Clamp 2800 50 , 35 , 8
Injection 2490 50 , 35 , 8
Screw rotation
     Range 1: 2550 50, 8
     Range 2: 1550 50 , 35 , 8
Clamp Hold, Ejector & Core 2900 19 Piston

Pump output, total nom, gpm: 112
Reservoir capacity, gal: 500

  1. Based on general purpose polystyrene per SPI test procedure with 15 Deg. F max melt temperature variation and 50% injection capacity.
  2. Calculated using pump output @ 10,000 psi material pressure.
  3. Calculated using pump output @ rated torque and overall efficiency of hydraulic motor

Manufacturer: HPM Corporation

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