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Rotary table sand spraying machine is a device used for sand spraying treatment of wax molds, workpieces, etc. It is mainly used in industries such as precision casting and metal processing. The following is a detailed introduction about it:
1. Working principle
The rotary table sand spraying machine is driven by a motor to rotate the rotary table, fixing the wax mold or workpiece on the rotary table, so that it can receive sand spraying from the upper sand box or nozzle during the rotation process, thereby achieving uniform sand spraying effect.
The sand in the sand box flows out through the sand outlet pipe, and under the drive of the turntable, the wax mold or workpiece constantly changes its position, so that the sand can be evenly covered on its surface. At the same time, some turntable sand spraying machines are also equipped with sand screening devices, which can filter the sand, remove larger particles of impurities, and ensure the quality of sand spraying.
2. Structural composition
(1) Rotary table system: composed of a rotary table, a rotating shaft, a bearing seat, etc. The rotary table is usually made of stainless steel or aluminum alloy material, which has high strength and corrosion resistance. The rotating shaft is connected to the motor output shaft to drive the rotary table to rotate, and the bearing seat is used to support the rotating shaft to ensure smooth rotation of the rotary table.
(2) Sandbox and sand discharge device: Sandbox is used to store sand materials, and its bottom is equipped with a sand discharge pipe. Valves or regulating valves can be installed on the sand discharge pipe to control the flow rate and velocity of sand. Some sandboxes are also equipped with vibrators or mixers to prevent sand clumping or blockage of the sand discharge pipe.
(3) Drive system: Generally, a motor is used as the power source, and the power of the motor is transmitted to the turntable through transmission devices such as belts, chains, or gears. At the same time, speed control devices such as frequency converters can also be equipped to adjust the speed of the turntable according to different process requirements.
(4) Sand screening and filtering device: In order to ensure the quality of sand spraying, the rotary sand spraying machine is usually equipped with sand screening and filtering devices, such as sieves, filters, etc., which can screen the sand before it enters the sand outlet pipe to remove impurities and large particles.
(5) Control system: PLC (Programmable Logic Controller) is commonly used for control, which can achieve precise setting and adjustment of parameters such as turntable speed, sand flow rate, and sand spraying time. It also has functions such as fault alarm and automatic shutdown, making it convenient for operators to monitor and manage.
3. Performance characteristics
(1) Good uniformity of sanding: By rotating the turntable, all parts of the wax mold or workpiece can receive sanding evenly, avoiding the uneven sanding caused by traditional sanding machines due to fixed position sanding, and improving the surface quality and dimensional accuracy of castings.
(2) High production efficiency: The turntable can rotate continuously, achieving continuous sanding of wax molds or workpieces, greatly reducing the sanding time of individual workpieces and improving production efficiency. At the same time, some turntable sanding machines can also be equipped with multiple sand boxes or nozzles to further improve sanding speed.
(3) Easy to operate: With an automated control system, operators only need to set relevant parameters on the touch screen or control panel, and the equipment can automatically complete the sanding process without manual intervention, reducing labor intensity and operational difficulty.
(4) Wide applicability: It can be used for sanding treatment of wax molds or workpieces of various materials, shapes, and sizes by replacing sand materials with different mesh sizes and adjusting sanding parameters, meeting the production needs of different industries.