Evergreat Machinery Co., Ltd.

Die Casting Machine

Machine Structure

  • We guarantee the excellent injection performance with integrated machines. This design ensures that the C-shaped frame and the front platen align with the injection center.
  • The toggle mechanism with thicker mold platens contributes to the superior rigidity and the die-clamping stability. Furthermore, it ensures the excellent accuracy of the parallelism between mold platens.
  • Increased die platen thickness maximizes die clamping stability and rigidity to keep deformation to a minimum.
  • Stress is eliminated for extra durability and extends service life.
Machine Structure for Die Casting Machine

Standard

Hydraulic System

Hydraulic System

To increase efficiency and extend service life, main pressure control system adopts variable and proportional valves. Tatung motors and Tokimec oil pump provide better stability and durability.

Piston-type Accumulator

Piston-type Accumulator

The design requires less time for intensifying pressure, and thus enhances quality for workpieces. Moreover, it reduces costs for maintenance because it is less likely to be affected by impurities in oil.

Lubricating System

Lubricating System

All junctions of toggles are equipped with self-lubricating bushings and lubricated with slideway oil No.68. It provides better tolerance for toggles under high pressure.

Safety Door

Safety Door

Machine stops if safety door is open. It keeps the operators from harm or other non-desirable outcomes. Besides, it protects machine from environmental pollution.

Optional

Automatic Tie Bar Pull Out Device

Automatic Tie Bar Pull Out Device

The design provides convenience for die mounting and dismounting, especially for the dies with hydraulic cores. Operators can unload the upper tie bar from the front platen.

Two Injection Center

Two Injection Center

Both the injection position and the cylinder can be adjusted according to the design of casting and the position of injection port of mold.

Energy-Saving Hydraulic Device

Energy-Saving Hydraulic Device

It saves power up to 35%. Servo motor pauses when machine is idle; otherwise, it runs at ultra-high speed during operation. The servo-hydraulic system is supplied by Rexroth.

Multi-phase Injection Control

Multi-phase Injection Control

This is suitable for large models. It provides a digital control for 8-phase speeds for injection and exhausts air from the barrel and die cavity effectively.

Control System

Control System

Standard

  • Monitoring values for first-phase injection, second-phase injection, and intensifying injection.
  • Full-Test simulates die casting process, which helps operator to observe the flow of aluminum liquid during forming.
  • Multi-phase injecting adjustment avoids swelling gas in the barrel, therefore improves quality of castings.
  • The P/F valve reduces power consumption by more than 15%, and it is easier to operate.

Optional

  • Injection Mode: Soft Start with Single Speed, Multi-phase Speed, and Constant Acceleration.
  • Achieving remote monitoring by transmitting messages through Wi-Fi.
  • Dual-host provides control and data acquisition simultaneously.
  • Monitoring injection curve, pressure, speed, and displacement on display.
  • Production record history to trace historical parameters.
  • Available to be online with the furnace temperature or mold temperature.

Three Injection Modes:
Soft Start with Single Speed/Multi-phase Speed/Constant Acceleration

Soft Start with Single Speed Soft Start with Single Speed
Multi-phase Speed Multi-phase Speed
Constant Acceleration Constant Acceleration

Full Test Mold Flow Analysis

Swelling gas in the barrel

In the cold chamber die casting process, the barrel is an open space, in which melt flow will swell lots of gas that is then forced into the mold cavities. This influences the quality of the product seriously. A proper selection of the critical low injection speed can ensure that the melt flows in the barrel smoothly without any generation of swelling gas.

Due to the temperature gap between the melt and the barrel-wall, when the melt is poured into the barrel, a cold and solid layer forms on the barrel wall. It causes swelling gas or wrapped gas during feeding, which is visible through the simulation function. By adjusting the temperature and the injection speed, a fully filled barrel condition can be achieved before the melt reaches the quick injection point.

With the multi-phase speed function, the operation can simulate the melt flowing into the mold cavity condition, and make a corresponding solution.