Introduction to the Structure of a Non-Curing Spray Machine

Release date:

Dec 07,2022

A non-curing spray machine is a specialized coating device that employs spray‑coating technology. Its operating principle involves using airflow to instantly actuate a pneumatic switching mechanism, thereby driving the piston of the pneumatic motor in a stable, continuous reciprocating motion.

　　The paint drawn in is pressurized and conveyed through a high-pressure hose to the painter’s spray gun, where it is instantly atomized and then sprayed onto the surface of the object being coated. Non‑curing spray equipment primarily consists of a feeding mechanism, a spray gun, and an atomization source, and is suitable for industries such as leather handbags, gift packaging, furniture, footwear, and automotive manufacturing.

Non-curing spray machine

　　What is the structure of a non-curing spray machine? Let’s take a brief look together.

　　The non‑curing spray machine primarily consists of a feeding mechanism, a spray gun, and an atomization source. The atomization source varies depending on the type of sprayer: for air‑assisted sprayers, it comprises an air compressor, air hoses, an air‑oil‑water separator, and an air storage tank; for airless sprayers, it includes a power source and a high‑pressure pump; and for electrostatic sprayers, it is made up of a high‑frequency, high‑voltage electrostatic generator.

　　The non‑curing spray machine comprises spraying and drying processes. Its working components include a spray chamber equipped with nozzles, a leather‑carrying conveyor belt, a drying system, and a cleaning mechanism. Since 2012, rotary multi‑nozzle enclosed spray chambers have become widely adopted; ultrasonic or computer‑controlled nozzle opening and closing enables skin‑free spraying, reduces the consumption of finishing agents, minimizes environmental pollution, and enhances finishing efficiency. After spraying, the leather is conveyed to the drying zone and collected at the opposite end following drying.

　　The non-curing spray machine is a specialized spraying device that employs high-pressure airless spraying technology.

　　High-pressure airless spraying, also known as airless spraying, uses a high-pressure plunger pump to directly pressurize the paint, creating a high‑pressure stream that is atomized into a fine mist at the nozzle and applied to the surface of the object—whether wall or wood. Compared with air‑spraying, it produces a more uniform finish with no visible particulates. Because the process is carried out in an air‑free environment, the dried coating is clean and free of contamination. Airless spraying is well suited for applying high‑viscosity coatings with crisp edges and can even be used in spray applications that demand precise boundaries. Depending on the type of power source, airless sprayers are further classified into pneumatic, electric, and internal‑combustion models.

　　What are the maintenance procedures for a non‑curing spray machine? Let’s take a brief look together.

　　1. Spray booth maintenance. If the air supply system of the spray cabinet becomes clogged or accumulates excessive dust, replace the air filter cotton. Every three days or so, open the oil‑removal system at the rear of the spray cabinet and clean it. In addition, periodically remove grease from the conveyor chain and apply lubricant.

　　2. Maintenance of the oil supply system. When the sprayer is no longer in use, open the paint return valve to allow all paint to flow back into the ink tank. Remove the ink tank, pour cleaning solvent into the mixing bucket, and start the oil pump. Additionally, fully open the return valve and the spray gun to circulate the cleaning solvent through the oil lines, thereby flushing both the spray gun and the oil pump. Because the pump and spray gun are highly precise, avoid disassembling them arbitrarily during cleaning to prevent damage.

　　3. After one operating cycle or 50 hours of operation, inspect the sealing of the mortar mixer’s pump housing and cylinder barrel, the tension of the drive belt, and the tightness and secure fit of all pipe joints. Clean the exterior of the pump and apply a light coat of oil to prevent dirt from adhering.

4. Major components such as the clutch, relief valve, reducer, and air compressor shall be inspected regularly in accordance with their operating requirements. If any wear or damage is detected, they should be adjusted or replaced promptly.

　　5. Before lubricating the mortar mixer and mortar binder, clean any dirt from the oil filler port and oil holes.

Introduction to the Operating Principle of a Non-Curing Spray Machine

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