The machine use the high-performance servo dynamic control system,
the oil pump as the power source, having the characteristics as
follow: high response,saving energy, low noise, high-control
precision, and have the breakthrough in the prefect connection of
the electrical servo and hydraulic drive system.
High Energy saving
Under the ideal working state, Power consumption is 40% less than
that of variable displacement pump and 70% less than that of fixed
displacement pump, save the cost effectively.
High precision
Precise control of low pressure & low flow, repeating precision is
less than 0.5%. Weight error of the products is 0.4%~0.7%, with
semi-close loop system nearly.
Low noise
Different from ordinary fixed pump injection molding machine, servo
power-saving injection molding machine is working only when
necessary. And working noise is less than 70dB, will be much
quieter for your working area.
| SPECIFICATION | HJF-140 |
| A | B | C |
| Screw Diameter | Mm | 38 | 42 | 45 |
| Screw L/D Ration | L/D | 22.1 | 21.6 | 19.5 |
| Shot Size(Theoretical) | cm3 | 193 | 227 | 278 |
| Injection Weight(PS) | g | 176 | 206 | 252 |
| Injection Rate | g/s | 94 | 105 | 135 |
| Injection Pressure | MPa | 205 | 159 | 140 |
| Screw Speed | rpm | 0~220 |
| Clamp tonnage | KN | 1400 |
| Opening stroke | mm | 380 |
| Space Between Tie Bars | mm | 420*420 |
| Max.Mold Height | mm | 450 |
| Min.Mold Height | mm | 170 |
| Ejector Stroke | mm | 120 |
| Ejector Tonnage | KN | 33 |
| Max.Pump Pressure | MPa | 16 |
| Pump Motor Power | KW | 13 |
| Heater power | KW | 7.2 |
| Machine Dimension(L*W*H) | M | 4.5*1.2*1.7 |
| Machine weight | T | 4.2 |
| Oil Tank Capacity | L | 230 |
Not designing the proper draft: This refers to the angle at which
the finished product is ejected from the mold. An insufficient
draft can lead to ejection problems, costing significant time and
money.
Improperly placed or sized gates: Gates are the openings in a mold
through which thermoset or thermoplastic material is injected. Each
will leave a vestige (scar), which can create aesthetic or
functional problems if not properly placed.
The number of parts (cycles) required, as well as the material they
will be made of will help drive decision-making as to how and with
what materials to create the mold.
When a product has been properly designed, approved, and die cast,
it’s time to start the actual manufacturing! Here are the basics of
the injection molding process…
Thermoset or thermoplastic material in granular form is fed through
a hopper into a heating barrel. (Learn more about the differences
between plastics in our PLASTICS course.) The plastic is heated to
a predetermined temperature and driven by a large screw through the
gate(s) and into the mold. Once the mold is filled, the screw will
remain in place to apply appropriate pressure for the duration of a
predetermined cooling time. Upon reaching this point, the screw is
withdrawn, the mold opened, and the part ejected. Gates will either
shear off automatically or be manually removed. This cycle will
repeat over and over, and can be used to create hundreds of
thousands of parts in a relatively short amount of time.
