Multi‑Station Turntable Type Automatic Sandblasting Production Line Equipment

This turntable automatic sandblasting machine is a high‑efficiency surface treatment system that operates on a circulating flow‑line principle, using a turntable to carry workpieces through multiple stations. The working principle relies on compressed air generated by an air compressor, which flows at high speed through the blast gun cavity to create a negative pressure that draws abrasive media (such as brown aluminium oxide, glass beads, or steel grit) from the cyclone separator’s storage tank through the suction hose into the gun. The abrasive is then accelerated and ejected through the nozzle at high velocity onto the workpiece surface, where the impact and cutting action remove rust, scale, oxide layers, and contaminants, while also creating the desired surface profile. This machine is designed with a large turntable that rotates intermittently (or continuously) and multiple small turntables that revolve around the main axis while each rotates on its own axis, enabling simultaneous processing at several stations. It is specifically engineered for high‑volume production of disc‑shaped, cylindrical, and polyhedral workpieces, making it an indispensable automated blasting solution for modern manufacturing.

In terms of manufacturing quality and structural integrity, the blast chamber of this multi‑station turntable sandblasting equipment is fabricated from high‑quality cold‑rolled steel plates with a minimum thickness of 3mm, welded into a rigid frame and finished with electrostatic powder coating both inside and out. The interior walls are lined with easily replaceable polyurethane protective sheets to withstand abrasive impact and prolong the service life of the chamber. The large turntable is positioned by proximity switches with high precision, indexing one station (typically 90°) per cycle to ensure accurate alignment of each workpiece with the blasting zone. Each small turntable is driven by an independent motor, with rotational speed infinitely adjustable via individual variable‑frequency drives. The blast gun assembly can move horizontally, vertically, and swing at multiple angles to accommodate diverse workpiece geometries. The entire system is governed by a Mitsubishi PLC controller paired with Delta inverters, ensuring stable, precise, and highly automated operation. For environmental protection, the dust collection system incorporates an upper‑cyclone separator and a pulse‑reverse cartridge dust filter, which captures over 99% of particles larger than 0.2μm, effectively minimising airborne emissions and safeguarding operator health.

The core advantages and performance highlights of this rotary table automatic sandblasting machine are substantial. First, parallel multi‑station processing – the large turntable typically carries four groups, each with two small turntables, totalling eight workpieces. While one group is being blasted, another is being loaded or unloaded, so production is continuous and idle time is virtually eliminated. Each small turntable rotates the workpiece during blasting, ensuring a uniform finish over the entire surface. Second, high automation – operators only need to load and unload workpieces; the entire blasting cycle, including turntable indexing, gun oscillation, abrasive recycling, and dust extraction, is fully automatic. Third, flexible process parameters – each blast gun’s pressure can be individually adjusted, blasting time is programmable, and the gun swing speed is frequency‑controlled. Fourth, efficient abrasive recycling – the cyclone separator effectively separates reusable abrasive from fine dust, achieving a high recovery rate that significantly reduces consumable costs. Fifth, excellent sealing – the chamber features dust‑proof curtains and doors, preventing any abrasive leakage during operation.

The application scope of this turntable automatic sandblasting machine is exceptionally wide. Typical workpieces include kitchen appliance components (rice cookers, heating plates, non‑stick pans, baking trays), sports equipment (golf club heads), cylindrical parts (cylinders, bottles, cups), 3C electronic enclosures (mobile phone shells, camera housings, CD cases), as well as gears, resin crafts, and lighting fixtures. It is used for removing rough surfaces, oxide scales, and burrs, as well as for pre‑treatment before painting or plating to improve coating adhesion, and for glass‑bead peening to achieve a decorative satin or strengthening effect. With its efficient circular flow‑line mode and consistent quality, this turntable type automatic sandblasting machine is the preferred choice for medium‑to‑small batch surface finishing in a wide range of industries.