& nbsp; The J318 metal mold gravity casting machine is mainly composed of a host, hydraulic system, and electrical control system. This model can be widely used in the production of various aluminum alloy castings and has good process adaptability. Structural features: This machine is mainly composed of a base, a bed, a left combined type group, a right combined type group, a lower ejection device, a hydraulic control system, an electrical control system, a cooling system, etc. It adopts a combination of electrical and hydraulic control, and has three working systems: jog, manual, and automatic circulation, which are respectively suitable for machine adjustment and continuous production. ● Base and bed: The base and bed are irregular rectangular frames welded from steel plates and various types of steel, mainly used for support, and other parts of the machine are installed on the base and bed; Closing mechanism: The opening and closing mechanism is divided into two parts: left and right, and is a single-layer structure used for the left and right opening and closing of molds. The fitting oil cylinder is fixed on the fitting bracket, which is fixed on the bed. The combined cylinder adopts a reverse installation method, with the piston rod of the oil cylinder facing away from the mold and connected to the mold through a connecting guide rod and connecting plate. The reverse installation method of the oil cylinder ensures that the opening force is greater than the closing force, which meets the process requirements. At the same time, the piston rod of the oil cylinder is far away from the heat source, which can improve the service life of the oil cylinder seal; ● Lower ejection mechanism: located in the middle of the bed, fixed on the crossbeam guide rails on both sides of the bed, consisting of two parts: ejection cylinder and guide mechanism, and driven by the oil cylinder to complete the ejection action of the casting; ● Quick mold locking device, with four mold locking cylinders to achieve rapid mold locking and disassembly; Front and rear core pulling and inserting devices: located on the front and rear sides of the bed, the core pulling cylinder is installed on the core pulling support; Adopting a constant pressure variable axial piston pump to ensure automatic adjustment of system pressure and flow rate, saving energy; Equipped with 2-way air cooling and 2-way water cooling cooling circuits, which can automatically control cooling in a time manner; The electrical control system consists of two parts: a human-machine interface and a lower control device. The lower control device adopts a PLC programmable controller and its modules, paired with low-voltage electrical components, to complete the action control of the machine; The human-machine interface completes monitoring and management functions such as displaying machine working status and fault alarms, setting and modifying parameters. technical parameterNameCompanyTechnical parametersCombined cylinderLeft strokemmtwo hundredRight stroketwo hundredCombined (single layer) center heightmm 450 (to work surface) & nbsp;& nbsp;Maximum internal spacing between rod ends of combined cylindersmmone thousand and two hundredLower ejection mechanism travelmmfortyEjection force of the lower ejection mechanismKNtwo hundred and tenFront and rear core pulling strokemmninetyFront and rear core pulling center heightmm440 (to workbench)Hydraulic system working pressureMPatenOil pump motor powerkWfifteenTotal power of electrical equipmentkW≤ eighteenCooling water pipeWater inletinchMold 3/4; Cooler 3/4outletinch Cooler 3/4Compressed air pressureMPazero point sixCompressed air inlet sizeinch3/4Total weight of the machinekgfour thousand and two hundredOverall dimensions of the machine (host)mm3600X2160X1200
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