According to the product characteristics provided by the customer, this machine is a specially designed continuous rotary table automatic sandblasting machine to eliminate dirt (scale, oil, coating, etc.), scratches and other sundries on round or cylindrical products, and obtain uniform sandblasting surface; during spraying, electroplating, oxidation, printing, fuel injection and other processes, the pretreatment of surface cleaning is carried out to increase surface adhesion, high efficiency, neat and beautiful. Different sand patterns can be obtained by choosing different sand materials, and the surface adhesion is enhanced during oil spraying, and it is not easy to wear and scratch. During the sandblasting process, the product is directly placed on the tooling fixture of the small turntable, and is transferred from the feed port to the sandblasting room at a uniform speed. The spray gun is driven by the motor to reciprocate and swing sandblasting with the mechanism to ensure that the surface of the workpiece to be processed is uniform and the processing is completed. , the workpiece is output from the outlet. Scope of application: This machine is suitable for small round and special-shaped products such as aluminum alloy, stainless steel, glass bottles, and hardware products.
2. Design Basis 2.1. According to the production requirements of the People's Republic of China for safe production machinery and equipment; 2.2. According to the environmental protection requirements of mechanical operation of the People's Republic of China; 2.3. Your company's overall requirements for machinery manufacturing; 2.4. Various data provided by your company; 2.5. 17 national building materials machinery production standards; 2.6. According to the interim regulations of the industrial surface treatment industry.
3. Design principle of rotary table type automatic sandblasting machine This machine adopts suction type sandblasting, that is to use compressed air to flow in the spray gun at high speed to form negative pressure to generate ejection effect, and the sand in the sand storage box is sucked into the spray gun through the rubber hose, and then injected into the spray gun at high speed with the compressed air flow from the nozzle. The working surface can achieve the purpose of sandblasting. The compressed air and sand material in the spray gun are sprayed while mixing, so that the compressed air can be fully utilized, the air flow and the sand material flow can be adjusted easily, the ideal mixing ratio can be obtained, the energy and sand material consumption is less, and the grinding and sweeping efficiency is high. 3.1. The sand material sprayed on the metal surface impacts and grinds the metal surface to remove impurities, rust layers, oxide scales, and burrs on the surface of the workpiece, increase the contact surface area, improve the adhesion of the coating, and improve the coating quality. 3.2. The residual compressive stress on the surface can harden the surface of the workpiece, enhance the resistance of the surface of the part to plastic deformation and improve its fatigue strength.
4. Machine composition The main structure of the rotary table type automatic sandblasting machine includes sandblasting host, sandblasting cabin, separator, dust collection box, turntable device, automatic gun rack, electrical control, etc. The main technical parameters: Specification model: BD1616A-14 Equipment dimensions: 1600mm (L) * 1800mm (W) * 2200mm (H) Dust collector size: 1200mm (L) * 1200mm (W) * 2700mm (H) Dust removal fan: 5.5KW 380V 50HZ Separator size: diameter 600*1200H (MM)
1) Host: The chamber body is welded by 3MM cold-rolled steel plates, the inner and outer surfaces are sprayed with plastic, and the inner wall of the chamber is lined with easy-to-replace protective rubber to protect the cabinet from wear. 2) The overall height of the machine installation is 3300mm, and the height of the installation site is least 3500mm.
Sandblasting host Case presentation
Spray gun control method: the spray gun is fixed by the gun frame, the position of the spray gun and the spray angle can be adjusted according to the needs (360 degrees adjustable), each spray gun is controlled by a separate pressure regulating valve, and the required pressure during the sandblasting operation can be freely adjusted. The same spray guns are controlled separately by a separate spray gun switch, and the number of spray guns is turned on according to actual needs, so as to ensure that the spray guns work smoothly and achieve perfect sandblasting effects. The reference pictures are as follows: Sandblasting gun
Transmission device: This machine is designed with a large turntable transmission device: 42 small turntables are distributed on the large turntable. It is composed of workpiece fixture, turntable support, belt, reducer, gear reduction motor, motor support, positioning device, etc.
Dust removal system: filter element dust collector is optional. The pulse automatic controller has a timing and automatic vibration function to ensure that no dust is discharged outside the dust collector, which meets the relevant national standards. The filtration efficiency is 99%, which can fully guarantee to reduce the harm of dust to the environment and staff. The reference pictures are as follows:
Separator system: The specifications of the main separator for this machine are: a separator with a diameter of 600*1200H (MM). This part is an important part of the machine and is integrated with the main machine (see the top part of the picture of the sandblasting main machine), which can effectively realize sand blasting. The automatic recycling and effective separation of sand and dust can maximize the utilization rate of sand materials, timely and effectively remove dust, and ensure that dust does not leak out; the body is made of 3MM cold-rolled steel, and the inner and outer surfaces are sprayed with plastic.
Electrical system: It is composed of filter, pressure gauge, regulating valve, electromagnetic travel switch, motor and corresponding pipelines and control components. Power configuration and consumption: 1. One centrifugal fan: power 5.5kW 2. Large turntable motor: power 0.4KW 3. Small turntable motor: power 0.4KW 4. Swing motor: power 0.4KW 5. Lighting and circuit control: power 0.2KW Total power: about 7KW except air compressor Compressed air system: (self-provided) It is required to provide dry compressed air with a pressure of 2~7bar and a flow rate of about 12m3/min, and the power of the air compressor is about 55KW.
5. The characteristics of the machine 5.1. Advancement This machine has novel design, reliable structure, convenient operation, high processing efficiency, low energy consumption and strong controllability. 5.2. Security This machine adopts fully automatic sandblasting operation, which truly achieves environmental protection, safety and efficient production. 5.3. Good effect The spray gun group adopts a fixed swing structure, and the spraying distance and angle can be adjusted to achieve the best sandblasting effect. 5.4. High efficiency The number of spray guns is 14, which can be swung with high efficiency for surface sandblasting. The spray gun with a nozzle diameter of φ8mm can be activated according to the workpiece processing requirements, and the installation angle and distance of the spray gun can be adjusted. 5.5. Environmental protection The machine adopts a semi-sealed operation, and is equipped with a dust-proof curtain for feeding and a dust-proof curtain for discharging. The workpiece loading and unloading platform is located in the middle of the entrance and exit hatch, which greatly improves the loading and unloading efficiency of workpieces. All actions are organically synchronized to ensure stable operation of the machine. It is also equipped with a filter-type dust collector, which can store all the dust generated during the cleaning process.
6. Supporting requirements of the machine 6.1. The power supply requirements of this machine: three-phase five-wire (three live wires, one neutral wire, one ground wire), 380V, 50HZ power socket; 6.2. The air source requirements of this machine: dry, the pressure is selected within the range of 5~8bar, and the flow rate must reach 10 cubic meters; 6.3. Abrasive requirements: 100-320 mesh abrasives can be used to achieve the best effect. 6.4. Requirements for gas source pipeline: pressure-resistant rubber hose, more than 1.5 inches. 6.5. Power line requirements: three-phase five-wire, above 6.
7. Machine operation process The artifact cleanup sequence is: Turn on the fan, turntable, dust cleaning, spray gun and other switches-manually install the workpiece on the turntable fixture---the workpiece enters the sandblasting area-the small turntable rotates, and the spray gun starts---sandblast the surface of the workpiece---large The turntable rotates continuously --- blowing the air gun to clean the workpiece --- loading and unloading by workers in the loading and unloading area. The turntable can be adjusted steplessly according to the process parameters of the workpiece to increase the uniformity of sandblasting. The dust treatment process is: Chamber dust and separator dust--Butterfly valve air volume control--First-level (inertial) dust removal--Secondary filter element dust removal--Dust removal fan--Exhausted into the atmosphere.
8. Quality assurance system Quality Assurance System 8.1. The steel plates and profiles required for the products are all purchased from regular manufacturers. 8.2. All steel plates, profiles or components that make up the equipment shall be derusted and then sprayed with maintenance primer. 8.3. All supporting standard parts are purchased from well-known manufacturers, such as bearings, motors, reducers, etc. 8.4. The electrical components are made by Chint Company. 8.5. In-factory test of key components, and in-factory dry run test run of each movement mechanism. 8.6. A special quality supervision team of quality inspectors supervises the implementation of the above steps to ensure product quality. 8.7. After the equipment is manufactured, the user is notified to preliminary acceptance of each functional component, and the machine can only leave the factory after passing the acceptance.
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