SAND CASTING EQUIPMENT.
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Removable Flask Molding Machine:
Removable Flask Molding Machine is mainly used in automated green sand casting workshop, which needs to be used in combination with green sand recycling processing equipment, because this equipment requires high quality of green sand, which needs to remove iron bean splinter etc. from old sand, and also needs to regenerate the old sand, 40-70 S/model, which is divided into horizontal sand injection and upper and lower sand injection, and the hardness of the mould sand is HB80-90 on average.
Removable flask molding machine with its production of core more complex castings and sand line simple, less investment, occupies a small area and has a high degree of automation, high production efficiency, easy to operate, easy to get off the core, molding and pouring process is good, for casting sand automatic molding, high efficiency, stable quality, simple operation.
The hydraulic system is controlled by the proportional valve of Taiwan Seven Oceans, with the high-resolution electronic ruler for real-time tracking and positioning of the actuator, so that the adjustment of system pressure and flow can be precisely realized on the touch screen.characteristics of removable flask molding machine：
1.Automatic one-button operation, easy to understand, easy to operate, no need for professional workers.
Each complete molding only needs to press the start button once (without core working condition), such as the workpiece that needs to be under core, the program will stop automatically after selection, after the core is completed, press the close mold button, the program is completed automatically.
2. Horizontal parting, vertical parting, no column blocking, easy to lower the core.
3. Template installation: four screws fixed, replaced within five minutes, adapt to replace the same size mold.
4. Casting hardness: Casting hardness can be freely adjusted according to the requirements of different castings, only a few parameters to adjust very convenient and rapid, up to 85-90 degrees.
5. Casting height adjustable, saving sand: the upper and lower compaction plates are adjustable, thus producing different casting heights.
6. Moulding accuracy: moulding and moulding are carried out in the uniformly positioned mould board and sand box system, with high repeatability. The whole molding process is fully automatic control, without human factors interference, so the molding quality is stable and efficient.
7. Casting quality is constant and uniform: this machine adopts high-precision mechanical positioning system, microcomputer and position detection linkage, the whole molding process is fully automatic control, without human factors interference, so the molding quality is stable and reliable.
8. With safety protection device: advanced light curtain protection, to ensure the personal safety of the operator.
9. Modeling speed: about 40 seconds per box; touch screen, parameter setting, very convenient, can be customized according to customer requirements for large-size models.
10. It can be equipped with conveying line or single machine production. This machine can be produced without very complicated wiring, customers can use the original sand mixer, and then equipped with a conveying belt to the sand addition port of this machine to realize fully automatic production.
11. There are as many as 100-150 reserved positions for gates and air pins, which makes it easy to design the gates and solve the air permeability problem and improve the yield of castings.
Removable flask molding machine composition：
1. Horizontal sand injection adopts side directional air flow suspension sand injection, filling evenly, no sand blockage phenomenon, high sand filling quality, reduce the bad sand eye, improve the casting size accuracy, suitable for simple shape, sand thickness of thin products, compaction balance control to prevent distortion and deformation of the mold plate, improve the casting size accuracy, reduce collapse box, can use or thinner mold plate.
2. Upper and lower sand injection machine solves the painful point of inconsistent sand hardness due to uniform sand cloth, and solves the problem of sand shadow for castings with complex shape or high casting height. Up and down sand injection molding machine is applicable to a wide range of castings, small, medium and large castings, and the type plate with deep hanging sand shape can also be molded, and it can also reduce the collapse box and improve the dimensional accuracy of castings.
Sand injection adopts the way of air flow suspension bottom injection and bottom injection, so that the sand fills perpendicular to the type plate in a flowing state, which makes the sand filling reach uniformity. Therefore, there is no sand clogging phenomenon, and it can produce deeper and complicated shape products stably. It improves the quality of sand filling, reduces the bad sand eye, improves the dimensional accuracy of castings, can adapt to a variety of characteristics of the type of sand, compaction balance control to prevent distortion and deformation of the type plate mold, improve the dimensional accuracy of castings, reduce the collapse box, can use or thinner type plate mold.
3. Moulding machine table.
Mould for molding is fixed on the middle box for production. Its butterfly-shaped movable plate, bottom plate, top
The butterfly plate, bottom plate, top plate, sand box and upper pressure plate are all made of QT500 ductile iron and the lower pressure plate is made of high chromium alloy iron. In order to ensure the high rigidity of the equipment, a large number of reinforcement bars are cast behind the five plates, and the columns are 45Cr, medium frequency tempered and hard chrome plated. The hydraulic cylinders are heavy-duty hydraulic cylinders with internal seals of NOK brand, and the hydraulic hoses linked to the equipment and hydraulic cylinders are steel wire braided high pressure hoses, which can resist high pressure and high temperature. The lower box cylinder is installed with 4 support cylinders, which greatly improves the stability of the demoulding performance, and the sand pushing cylinder is an oil cylinder, which also greatly improves the stability of the sand pushing.
4. Pneumatic system
The pneumatic components of this machine adopt Taiwan Airtac brand, including air source processing triplet, pneumatic actuating element cylinder and pneumatic control element solenoid valve.
5. Hydraulic pumping station.
This pump station has 5 pairs of solenoid valves, 5 pairs of solenoid valves control the action of main oil cylinder, lower box oil cylinder, upper box oil cylinder, upper platen oil cylinder and push type oil cylinder respectively. Solenoid valve using Japan oil research, oil pump using Japan oil research oil pump, hydraulic system pressure is 19MPa, commonly used pressure for 13MPa or less. The system pressure control uses the proportional valve of oil research, with Mitsubishi PLC module and Mitsubishi touch screen to achieve digital control, can be adjusted in the touch screen by entering the corresponding number, adjust the upper limit of 19MPa, the equipment with air-cooled radiator, when the hydraulic oil is higher than 30 degrees automatically start cooling fan, to ensure that the hydraulic oil in the normal working temperature range, can effectively protect the seals of the hydraulic cylinder and prevent the hydraulic oil temperature from rising. In the hydraulic oil tank is installed with a heater, in the oil temperature is lower than 6 degrees automatically start the heater, higher than 10 degrees to stop heating, to prevent the oil temperature is too low cause hydraulic oil viscosity is too high, affecting the flow of oil damage oil pump.
6. Control system.
Control system total control of pressure, speed, temperature operation of the three aspects. Automatic system mainly adopts Mitsubishi touch screen and Mitsubishi PLC control drive hydraulic solenoid valve and Taiwan ADATA pneumatic components system to achieve the hydraulic components of the equipment action, and the continuous and interlocking relationship between the action. Hydraulic oil temperature system adopts Omron thermostat for temperature control. The hydraulic system is mainly controlled under the Mitsubishi PLC through output modules and Schneider relays.
