Metal air chamber driven grasping device and method of use thereof

Abstract

A metal air chamber driving grabbing device, the air chamber housing is divided into two sub-air chambers, the outer end panels of the air chamber are installed in the air chamber housing and on both sides of the middle fixed plate through the air film, and the outer end panels of the air chamber are The outer side of the panel is connected with an "H"-shaped flange connecting rod and a "T"-shaped slider; the upper end of the middle fixed plate has a longitudinal hole, and the middle part has a two-way hole, and the two-way hole is connected with the central through hole of the air film . The method of use is: install the driving grabbing device in a metal core, insert multiple such metal cores into corresponding multiple preheated cylinder liners at the same time; when the driving grabbing device is inflated, the "T" The sliding block pushes the inner side of the cylinder liner outward, locates and expands the fixed cylinder liner, the metal core returns, exits the liner heater, multiple metal cores tilt downward at the same time, and the upside-down cylinder liner is inserted into the cavity, and finally Close the mold and die-cast the blank; on the contrary, the expansion and tightness of the inner wall of the cylinder liner are released, and the metal core is drawn and the mold is opened. The invention is easy to operate and use, and improves work efficiency.

Description

technical field [0001] The invention relates to a cylinder liner grasping device used in the process of expanding and tightening the inner hole of a high-temperature metal core used in the foundry industry to grasp the cylinder liner, especially in the process of inlaying and casting the cylinder liner of an aluminum alloy low-pressure casting cylinder body. A cylinder liner grasping device and its application method are provided between the inside of the metal model core and the inner hole of the cylinder liner heated to about 500°C to form a tensioning and loosening force. Background technique [0002] At present, in the known aluminum alloy high-pressure, low-pressure casting aluminum alloy cylinder block process, in the metal core (cavity) inlaid casting clad cylinder liner process, generally adopt two methods: 1, high-frequency induction heating rod in the mold The inner hole of the fixed cylinder liner is heated in the cavity. Its structure and process method are to pr...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned technologies, and provide a metal air chamber-driven grasping device and its use method, which can effectively solve the problem of product choking caused by overheating and gas generation of the sand core in the cylinder liner; Grabbing and manual clamping respectively, the time difference between successive times causes the temperature difference of the cylinder liner, which causes the problems of cylinder liner surface oxidation and low temperature cold insulation gap

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