It is well known that the plastics processing industry is matched with plastic molding machines to give plastic products a tool with a complete configuration and precise dimensions. Due to the variety of plastics and processing methods, the structure of plastic molding machines and plastic products is complicated, so the types and structures of plastic molds are also diverse. However, no matter what type of plastic mold, it must have the following basic characteristics:
1. The accuracy of plastic mold processing requirements is very high. A pair of molds is generally composed of a concave, a convex mold and a mold base, and many molds are still composed of a plurality of mold blocks. Therefore, the precision required for the combination between the molds is very high, often reaching the micron level.
2. The cavity surface of the plastic mold is very complicated. There are many products, such as toys, home appliances, etc., which are composed of a variety of surfaces through a variety of mathematical operations, so the complexity of the cavity surface can be imagined.
3. Small batch size and many processes. Plastic mold processing often does not require large-scale production, but only one pair can be produced, and the mold has to go through many detailed processes in the process of processing.
4, strong repeatability. Plastic molds often have their own service life. When a pair of molds reaches their service life, they need to be replaced with new ones. Therefore, the molds have strong repeatability.
5, the choice of plastic mold materials. The application range of plastic molds is very wide, and it can be said that it is closely related to people's lives. Therefore, in order to make full use of the molds, it is necessary to start with the raw materials for making molds, and good materials can make good molds.
Plastic mold is a tool that can give the plastic product a complete structure and precise size. Its quality can directly affect the quality of plastic products, so we must do a good job in the maintenance of plastic molds. So, what are the aspects of the maintenance of plastic molds? Let's take a look at the Xiaobian Plastic Network's Xiaobian:
1. The processing enterprise should first equip each pair of molds with a resume card, detailing and counting its use, care (lubrication, cleaning, rust prevention) and damage, according to which components and components can be damaged and the degree of wear and tear is Provide information and materials for discovering and solving problems, as well as the molding process parameters of the mold and the materials used in the product, so as to shorten the test time of the mold and improve production efficiency.
2. The processing enterprise should test the various properties of the mold under the normal operation of the injection molding machine and the mold, and measure the size of the final molded plastic part. Through this information, the existing state of the mold can be determined, and the cavity and core can be found. The damage of the cooling system and the parting surface, etc., according to the information provided by the plastic parts, the damage state of the mold and the maintenance measures can be judged.
3. It is necessary to carry out key tracking and inspection on several important parts of the mold: the function of the ejection and guiding parts is to ensure the opening and closing movement of the mold and the ejection of the plastic parts. If any part is stuck due to damage, it will lead to production stoppage. Always keep the mold thimble and guide column lubrication (use the most suitable lubricant), and regularly check the thimble, guide column, etc. for deformation and surface damage, once found, should be replaced in time.
4, we must pay attention to the surface maintenance of the mold, it directly affects the surface quality of the product, the focus is to prevent corrosion. It is especially important to choose a suitable, high-quality, professional anti-rust oil. After the mold has completed the production task, the residual injection molding should be carefully removed according to different injection molding methods. The residual injection molding and other deposits in the mold can be removed by using copper rods, copper wires and professional mold cleaning agents, and then air-dried. Disable the hard objects such as wire and steel bars to avoid scratching the surface. If there is rust caused by corrosive injection molding, use a grinder to grind and polish, spray professional anti-rust oil, and then store the mold in a dry, cool, dust-free place.
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