Plastic test tubes, as one of the most common medical consumables, are widely used. In addition to the impact of the pandemic, the demand for test tubes in the market has been increasing day by day. More and more companies are shifting their investment targets toward the medical consumables market. To produce good medical test tubes, the first step is to make high-quality test tube molds. The difficulty in making test tube molds lies in the potential issues such as eccentricity, low precision, and low pass rates. Such test tubes will not meet the technical standards for medical devices.
The mold steel material uses high-quality stainless steel, significantly extending the mold's service life. The mold frame is also made of high-quality pre-hardened steel, offering higher hardness and better flatness. At the same time, after mirror polishing of the core and cavity, the surface of the test tube achieves a higher level of smoothness.
The more cavities a test tube mold has, the more challenging it becomes. The molten material inside the cavity needs to be rapidly cooled after injection to prevent eccentricity. Therefore, the temperature control balance of the gate is crucial.
A large water gate cooling system is used to achieve quick cooling by controlling the inflow and outflow of water. This ensures that the molten material in the cavity cools evenly, preventing eccentricity in the finished product.
Multi-cavity test tube molds with interchangeable functions can reduce redundant investment and subsequent maintenance costs. The core of the test tube mold uses an independent self-locking structure, allowing for the interchangeability of product dimensions, weight, and wall thickness.
The most important aspect of making test tube molds is controlling the wall thickness of the product, ensuring it is not eccentric. Therefore, the parallelism of each template and the concentricity of the insert holes require very high precision. Traditional processes use boring machines, but it is difficult to control the precision. By switching to coordinate grinding, the parallelism of the templates and the concentricity of the inserts are guaranteed to be within 0.01mm.
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