China Plastic Molding

Hydraulic-Mechanical Type

Hydraulic-Mechanical Type
As indicated in Fig.6-7, a large clamping force can be gained through small oil tank pushing force and the enlargement mechanism. Such mold clamping unit combined by hydraulic and mechanical function improves the speed f mold clamping and saves power consumption, which is very advantageous for improving equipment structure and reducing product cost. Current commonly-used types are the single-toggle and double-toggle hydraulic-mechanical mold clamping devices.
The hydraulic-mechanical mold clamping device embodies the following features:
1.    Having power enrichment function, which can reduce power consumption;
2.    Having self-locking function, even if the oil pressure is removed, clamping force shall not disappear. The molds can be securely and steadily locked;
3.    The moving speed of the mold plate is variable, wherein during mold clamping it is form fast to slow and during mold opening from slow to fast then to slow again, which ensures the steadiness of mold during opening and clamping and avoids the impact and collision of molds when contacting each other;
4.    The toggle link unit is easily worn and requires high rigidity and abrasion resistance;
5.    When the thickness of molds varies, the space between moving plate and fixed should be adjusted, which tends to be troublesome;
6.    The clamping force must be measured by special instrument and is hard to be adjusted.
 

 

Posted by SINO-Marry
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