General Description:
Ningbo Rainbow Plastics Machinery Co., Ltd. is one of the most famous Chinese manufacturer and supplier of high quality plastics Injection Molding Machine from Ningbo, China. All injection molding machine made by Rainbow used imported computer, temperature closed-looped control system, optional bimetal screw & barrel, pressure and flow proportional control, automatic mold adjusting, five fulcrum crankshaft structure.
Machine Features:
Applicable to injection molding of various kinds of thermoplastics, and have following features:
1. Adopting double-cylinder injection, with multilevel injection, pressure maintaining and anti-dribbling action, high injection pressure, and fast speed.
2. Low-speed and high torque hydraulic motors drive screws directly, stepless speed changing is achieved.
3. Adopting five-pivot point double-elbow hydraulic machinery clamping devices, for energy saving and stable movement.
4. Adopting computer control, proportional electro-hydraulic drive, safe operaion, high degree of automation.
5. The machine has an electrical safety duplicate protection device, which is safe and reliable to be operated.
6. Hydraulic components are designed to be outside the machine, which is easy for installation and maintenance.
Machine Specifications:
| Description | Unit | CHC4200-SV |
| International Size Rating |
| 2980 |
| Injection Unit |
| A | B | C |
| Screw Diameter | mm | 70 | 75 | 80 |
| Screw L/D Ratio | L/D | 22 | 20 | 19 |
| Theoretical Shot Volume | cm³ | 1501 | 1723 | 1960 |
| Shot Weight (PS) | g | 1366 | 1568 | 1784 |
| Injection Pressure | bar | 1990 | 1734 | 1524 |
| Max. Screw Speed | rpm | 169 |
| Clamping Unit: |
| Clamping Force | Kn | 4200 |
| Opening Stroke | mm | 740 |
| Distance Between tie-bars | mm | 760x760 |
| Max. Mold height | mm | 780 |
| Min. Mold height | mm | 250 |
| Ejector Stroke | mm | 200 |
| Ejector Force | Kn | 110 |
| Others: |
| Drive Power | Kw | 45 |
| Heating Capacity | Kw | 29.5 |
| Machine Dimensions | m | 7.5x1.95x2.4 |
| Machine Weight | t | 20 |
| Oil Tank Capacity | L | 800 |
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