Reducing piled force-expanding type oil cylinder opening-closing device and using method thereof
A technology of opening and closing device and power cylinder, which is applied in the field of devices for opening and closing metal molds of hydraulic cylinders, can solve problems such as inability to open molds and can not be drawn, and achieve the effects of convenient use, reduction of waste of stoppages, and reduction of cylinder diameters.
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[0010] Such as figure 1 As shown, the known metal mold hydraulic cylinder opening and closing device that drives the metal mold with a hydraulic cylinder includes a power cylinder 3, the power cylinder 3 is fixed on the cylinder seat 4, and the power cylinder 3 has a piston cavity inlet and outlet oil hole 8 and a piston rod cavity The oil inlet and outlet holes 9, the outer end of the piston rod 10 of the power cylinder 3 are connected to the cross-dan 1, the cross-dan 1 is connected to the pull rod 2, the pull rod 2 is connected to the metal mold core 5, and the metal mold core 5 is equipped with a metal cylinder liner 20, and the metal mold core 5 will The metal cylinder liner 20 is inserted into the metal cavity 6 of the metal mold, and the metal mold core and the metal cylinder liner are molded into the outer mold 17 of the metal mold to form the mold clamping surface 7, but the mold clamping surface is generally After the 7 places are solidified and shrunk by the molten ...
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