raw material
At present, all the raw materials used in capillary network are random polypropylene (PPr) from Nordic Chemical. In principle, ordinary PP can also be used, because the temperature of capillary network does not exceed 40℃, that is, it does not exceed the range of cold water.
The main supply return pipe is 20×2.0, and the capillary is 4.3×0.9. Due to its high temperature resistance, corrosion resistance, low thermal expansion coefficient, low water flow resistance, light weight, small specific gravity, sanitation and non-toxicity, PPr can be connected by electric melting and hot melting, and the tensile, bending and impact strength of the joint is higher than that of the pipe body, so the connection is simple and firm, and there is no hidden danger of leakage. Therefore, PPr is more suitable for manufacturing capillary networks based on welding technology. Welding process: welding workpiece size: main pipe length 500mm, diameter: 20mm, capillary diameter: 4.85mm Welding workpiece: welding multiple capillaries on one side of a main pipe. Welding mode: hot air heating welding action mode: automatic numerical control welding workpiece material PPR equipment technology and parameters;
The hot air system with accurate temperature control is controlled by PLC, which can automatically complete welding procedures such as heating, welding and curing.
Action control: PLC automatic control, man-machine interface operating system. Overall appearance (mm): (subject to the final design drawing) Overall power: 8KW Working pressure: 0 to 6kg/cm? Hot air power: 5KW Welding length: 500mm (main pipe) Capillary quantity: 15 /500mm Equipment working condition: gas source: 6kg/ cm? Above power supply: 380V/220V, 20A working temperature: 5-35 Manufacturing speed: 2-5 minutes/
Component introduction:
Rack: including main structure and working platform.
The workbench is the main workbench of the machine. The main pipe fixed die and capillary fixed die are designed on the workbench respectively, and the dies are driven by pneumatic components to move left and right on the workbench respectively.
Main pipe fixed die: it plays the role of fixing the main pipe in work, is installed on the right side of the workbench, and is driven by the cylinder to move left and right on the workbench.
Capillary die: it plays the role of fixing capillary in work, installed on the left side of the workbench, driven by air cylinder and can move left and right.
Hot air welding system: The hot air welding system consists of heating system, fan, temperature control system and multi-station air outlet. The hot air welding system is installed on the workbench between the main pipe die and the capillary die, and is driven by the pneumatic device to move up and down.
Introduction of welding procedure:
Operation process: the operator clamps the main tube and capillary tube on their respective fixed molds, and starts the equipment, which automatically completes the processes of workpiece heating, welding and curing. Finally, the operator will take off the welded workpiece and prepare to start the next cycle. Wuxi Nike Ultrasound (Shenghualei)