Vertical Rubber Injection Moulding Machine

The DOUSH vertical machines are suit to produce all kinds of rubber parts, especially rubber combination parts like rubber/metal parts. Via using appropriate options and peripheral equipments, like shuttle systems, slider, it is possible to automatic demoulding of the rubber parts.

DOUSH offers a vertical clamping unit and different types injection unit combinations, like vertical injection unit/horizontal injection unit, like injection from top/bottom.

DOUSH vertical machine can be injection all kinds of rubber material, silicone as well.

Products Range

Beginning with small 60t clamping units with 250cm³ injection units up to 1200 t clamping units with 20000cm³ rubber injection units.

Energy Saving

All series DOUSH machine equipted Rexroth servo motor hydraulic power system which maximum energy saving for user.

Control Technology

KEBA i2000 controller system with 10 inch touch screen interface opens up new dimensions in the optimization of the injection moulding process

• Exact injection volumes

• Perfect repeat accuracy

• Constant L/D-ratio

• Up to 2500 bar injection pressure

• Easy maintenance

• Shortest nozzle

• Minimum pressure loss

• Nozzle uncoupling unnecessary = No leakages

• Sample structure, maintenance free

• Fully Hydraulic design

• Special designed tie bar ensure excellent parallelism

• High frequency quenching and Hard chrome plating, steady and no rustiness

• Light curtain in front gate to prevent unnecessary injury

• Lowest operation high

• Bigger opening stroke, more daylight and space for mold operation

• Slider, ejector and shuttle table possibility

1.Design (mechanical parts, special steels, special heat treatment etc)

Machines are designed for 20 years life and for high speeds and pressures. Our movements are 500 mm/s and hydraulic pressures are 275 bar. We need strong mechanical parts to deliver perfect parallelism which will last for many years. Less flash, more cavities and fast cycle needs strong and stable mechanical structure. We use special alloy steels for our parts which are result of German engineering. Example the tie bars which go though induction hardness, straightening and regrinding and further processes. If we use tie bars like others then our manufacturing cost would be 1/3 rd but machine will loose parallelism or tie bars can get damaged if hit by the mould while loading in the machine.

2. Controls

We are using Rexroth servo motor and pump with fast PLC control KEBA brand from Austria: our controls are one of the highest end hardware in the world. But they offer fast control which is must to use high speeds. They offer considerable reduction in power consumption as pump is only made to create pressure when required in the cycle. Shot to shot variation is controlled and also the injection speed is maintained even with variation in rubber compound viscosity. This guaranties consistent quality and minimum rejections.

3. Reliable buyout parts

Like heaters, seals, hoses, electrical parts etc. we buy from best even in china to give Chinese company machines with high reliability and low down time. We buy components from world top makes which are also available in china for spare parts. Like seals from Trelleborg, hydraulic components from Rexroth, safety compounds system from Pilz and SICK etc. we ensure that running cost is kept low over many years and customers can use machines 24x 7.

http://www.doush-dass.com/