A twin-platen squeeze casting machine for light metal

Abstract

Provided is a double-die-plate squeeze casting machine used for light metal. The double-die-plate squeeze casting machine comprises die locking devices, die closing oil cylinders, a movable die plate, large bars, die moving oil cylinders, a fixed die plate, T-shaped grooves, T-groove bolts and a base. Each die locking device comprises a die locking oil cylinder, a first locking nut, long screws, a steel plate and a second locking nut. Each die locking oil cylinder comprises a die locking piston and a die locking cylinder body. Each die closing oil cylinder comprises a die closing piston sleeve and a die closing cylinder body. Each rapid die moving oil cylinder comprises a die moving piston and a die moving cylinder body. According to the double-die-plate squeeze casting machine used for the light metal, the four large bars are locked through the four independent die locking oil cylinders correspondingly; even if the installing plane or the parting surface of the movable die plate and the fixed die plate has certain non-parallelism, the effect that the locking force of each large bar is completely equal can also be ensured; the length of a machine body of the squeeze casting machine can be shortened through the movable die plate, the fixed die plate and the matched oil cylinders, so that the occupied area of the equipment is reduced, the workshop capacity and the output rate are increased, the integral rigidity and the operational stability of the equipment can further be improved, and the die closing speed and the die closing efficiency are increased through the simplified structure.

Description

technical field [0001] The invention relates to the technical field of squeeze casting, in particular to a double-platen squeeze casting machine for light metal. Background technique [0002] Squeeze casting machine is one of the commonly used machines in the machinery industry and is used for die-casting of metals. A common squeeze casting machine includes a head plate, a middle plate and a tail plate. It is customarily called a three-plate die-casting machine. The three-plate die-casting machine has experienced two kinds of mold clamping devices: full hydraulic type and toggle type. [0003] combine figure 1 , the full hydraulic mold clamping device is equipped with a locking cylinder 4 on the tail plate 5 of the die-casting machine. The opening, closing and locking actions of the mold 2 are all completed by the locking cylinder 4, which realizes hydraulic mold opening and closing, hydraulic locking and locking. Oil cylinder 4 adopts a large-capacity oil cylinder to prov...

AI Technical Summary

Problems solved by technology

The disadvantage of the toggle mold clamping device is that the locking position is required to be precise, and the mold 2 must be fully extended to the dead point to effectively lock the mold 2. The toggle mold clamping device has a complex structure, There are many parts and raw materials are wasted during manufacturing. Second, there are many wearing parts in use and high maintenance costs. Third, the force on the large bar is uneven, so that the quality of the pressed product cannot be fully guaranteed.

[0005] For molds of different thicknesses, it is necessary to precisely adjust the front and rear positions of the die-casting machine head plate 1 and middle plate 3. If the mold 2 is replaced frequently, this adjustment method is cumbersome and time-consuming. If the mold is heated and expanded during production, it will also cause large bars. Changes in stress

In addition, when the thickness of the mold 2 deviates at the four locking positions and the four locking nuts cannot be adjusted individually, it will cause uneven force on the large bar

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