Rotomolding Design and Product Development
Rotomolding design includes product design, taking into account factors such as shape and structure, wall thickness, and demoulding. Mold design involves aspects such as material selection and multi-cavity design. In terms of rotomolding product development, the process includes product design and mold making, material preparation, rotomolding, quality testing, and packaging and shipping. It has a wide range of application fields. In container manufacturing, it can produce water storage tanks, etc. In the automotive manufacturing industry, it can be used to make pipe fittings, bumpers, etc. In the field of sports equipment, it can produce water polo balls, surfboards, etc. It is also applied in many other fields such as construction and medical care.
Basic process of rotomolding process
01. Mold design
Analyze the shape, size, and other requirements of the product, use professional software to design the mold structure, generate detailed 2D drawings, and annotate various technical parameters.
02. Preparation of raw materials
Select materials such as aluminum alloy or steel according to the requirements of mold use, inspect the quality of material hardness, microstructure, etc., calculate the cutting according to the design dimensions, and consider the machining allowance.
03. Manufacturing molds
Remove excess materials through rough cutting and forging, leaving 0.5-1mm of precision machining allowance, and then use CNC equipment for precision machining to ensure accuracy and surface quality. Complex molds need to be welded and assembled, and finally drilled and tapped.
04. Assembly
Inventory the materials and tools, check their conditions, and plan the site. Hoist and transport the main body of the mold for pre-installation, tighten the bolts diagonally, and adjust the clearance. Assemble the mold base on the platform according to the drawing, carry out positioning spot welding and then welding. Take measures to prevent deformation and conduct cleaning after welding. Finally, check the appearance dimensions of the mold and the mold base, conduct no-load and load tests, and optimize the performance.
05. Surface treatment
Polish and polish the surface with tools such as sandpaper to improve its smoothness, and then perform rust prevention treatment through electroplating and other methods.
06. Sampling and QC
Use measuring tools to detect key dimensions, visually inspect the appearance, and use pressure testing to test the sealing to ensure that there are no tolerances, defects, or leaks.