- Sales@thedratec.com
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Casting Process: (e.g., Sand Casting, Investment Casting, Die Casting, etc.)
Part Dimensions: (Length x Width x Height, or a reference drawing)
Max. Part Weight: (The weight of a single casting)
Annual Production Volume: (The total number of parts produced per year)
With your input, we can engineer a machine that perfectly fits your operational needs.
The vertical drum sand mixer is driven and controlled by a vertical variable- frequency motor and a reducer, with its efficiency increased by 100%. It has excellent sand- mixing effects. Compared with the traditional horizontal bowl- type sand mixer, it reduces the resin addition by approximately 15%. The weight range of each sand- mixing operation can be controlled according to the electronic weighing method or the time-flow method, and the error can be controlled within 0.2- 0.5 kg. It is also in real-time linkage with the resin dosing and injection system by adjusting the numerical parameters of the control system. The contact area inside the sand mixer is coated with anti- sticking paint for easy cleaning of the sand-mixing chamber.
During each sand-mixing operation of the sand-mixing mechanism, the pre-measured raw sand is added to the sand- mixing drum by the raw sand dosing system. Under the uniform agitation of the sand- mixing blades, the resin dosing and injection system injects the resin (two components) according to the required parameters. When the sand- mixing is completed, the sand discharge door of the sand- mixing drum opens, and the mixed core sand is added to the hopper of the cold- box core machine below the sand mixer under the action of gravity or is sent to the hopper of the cold- box core machine in need by the equipped core- sand transfer vehicle.
The sand-mixing mechanism is mainly composed of a sand- mixing drum, sand- mixing blades, wear- resistant plates, a drive motor, and a reducer
The control system automatically controls the sand mixer through a PLC, AC contactors, command switches, etc
The sand dosing hopper is located at the upper part of the sand mixer. It is connected to the sand silo through a butterfly valve upwards and communicates with the sand- mixing drum through a butterfly valve downwards. The raw sand in the sand dosing hopper is heated by the hot- air circulation system (sand heating is carried out when the external temperature is low), and the heating temperature can be adjusted on the temperature control system
