Professional manufacturer of Roto Molding Products

How to design precise large molds to ensure uniform wall thickness and accurate geometric dimensions of roto-molded products?

Jiangsu Zhuohe Mould Company has unique advantages and practical experience in designing precise large molds to ensure uniform wall thickness and accurate geometric dimensions of roto-molded products. Relying on many years of rich experience in the research and development and production of roto-molding molds and parts, combined with advanced equipment and technology, we adopt the following strategies to ensure the accuracy of mold design and the quality of the final product:
High-precision measurement and design software: We use the most advanced CAD/CAM design software, combined with 3D scanning and reverse engineering technology, to accurately analyze and model customer needs. Through precise data simulation, prediction and optimization of mold structure and injection molding path, we ensure that a high degree of geometric dimensional accuracy can be achieved in the early stage of design.
Material selection and optimization: For large molds, we select high-strength and high-wear-resistant mold steel materials, and combine heat treatment processes to improve the durability and dimensional stability of the mold. This material selection can effectively resist the high temperature and pressure changes generated during the roto-molding process, and keep the mold size stable.
Application of multi-axis CNC machining center: The company has several high-precision CNC machining centers, including a five-axis CNC machining center, which can achieve high-precision machining of complex curved surfaces. These equipment ensure that every detail of the mold can meet the design requirements, including complex curved surfaces, fine structures and precise wall thickness control, thereby ensuring the uniformity of the wall thickness of the rotomolded products.
Advanced rotomolding equipment and processes: Our new factory is equipped with advanced rotomolding equipment, including 4-meter, 3.5-meter and 3-meter three-arm rotomolding machines, which can cope with the production of large rotomolded products of different sizes and shapes. By finely controlling the process parameters such as rotomolding temperature, time, and speed, combined with years of production experience, we can effectively control the flow and distribution of plastics in the mold to achieve uniform wall thickness of the products.
Strict quality control system: We have established a strict quality control process, from mold design and manufacturing to the production of rotomolded products, each step is strictly inspected. Use high-precision measuring tools for dimensional verification, and continuously adjust and optimize through trial molds and sample testing until the accuracy and quality standards required by customers are met.
Jiangsu Zhuohe Mould Co., Ltd., relying on its profound background in the field of rotational moulds, advanced processing equipment, rigorous quality control system and professional technical team, is able to design and manufacture precise large-scale moulds to ensure that the wall thickness of rotational moulded products is uniform and the geometric dimensions are accurate, meeting customers' demand for high-quality products.

How to choose the material and structure of rotomolding molds to withstand the high temperature, pressure and mechanical stress during rotomolding?

At Jiangsu Zhuohe Mould Company, we have many years of rich experience in the research and development and production of rotomolding molds and parts. We know that in the rotomolding process, the reasonable selection of mold materials and structures is crucial to ensure that the product can withstand high temperature, high pressure and complex mechanical stress. The following are our company's core advantages and selection strategies in this field:
Mold material selection
High temperature resistance: We prefer high temperature alloy steel (such as H13 hot work die steel) as the main material of the mold. This type of material has excellent high temperature resistance and can maintain strength and hardness for a long time during rotomolding, effectively resisting high temperature deformation and corrosion.
Thermal stability: Considering the temperature fluctuations during rotomolding, we pay attention to the thermal stability of the material to ensure that the mold still maintains dimensional accuracy and surface quality under temperature changes, and reduce defects caused by thermal expansion and contraction.
Wear resistance and corrosion resistance: In view of the wear of plastic raw materials on the mold and possible chemical corrosion during rotomolding, we use special treatment processes, such as surface nitriding and chrome plating, to improve the wear resistance and corrosion resistance of the mold and extend the service life of the mold.
Mold structure design
Reasonable wall thickness and cooling system: According to the shape and size of the rotomolded product, we carefully design the mold wall thickness to ensure sufficient strength support and avoid unnecessary material waste. At the same time, an efficient cooling system is integrated to quickly export the heat inside the mold, reduce thermal stress, and improve production efficiency.
Optimize the parting surface and demolding structure: With rich experience, we accurately calculate and design the parting surface position to ensure that the plastic melt flows evenly and demolds smoothly. Use advanced demolding structure design, such as pneumatic ejection mechanism, inclined ejector, etc., to reduce product deformation and damage and improve the yield rate.
Enhance support and rigidity: For large or complex structure rotomolded products, such as agricultural machinery accessories, cleaning and environmental protection boxes, etc., we will add necessary reinforcement ribs and support structures in the mold design to enhance the overall rigidity and stability of the mold to ensure that it does not deform under high pressure.
Precise processing and assembly: Using the company's advanced CNC machining center, especially the five-axis CNC machining center, we can achieve high-precision processing of mold parts, ensure that the mold gap after assembly is small and the sealing is good, and further improve the durability and production quality of the mold.
Jiangsu Zhuohe Mould Co., Ltd. relies on its deep understanding and precise selection of roto-molding mould materials and structures, combined with advanced processing technology and rich industry experience, to provide customers with high-quality and high-reliability roto-molding mould solutions, helping customers achieve greater success in the roto-molding field.