Attention should be paid to the preparation and processing of injection molds before debugging
Edit time: 2021-11-11         source: Xiaxin official website         Views: 776

Drawing inspection.


The injection mold debugging must be prepared according to the mold debugging notice issued by the external cooperation department or the production department. The first step is the review of the drawings. There are two drawings here, one is the product drawing for mold debugging, and the other is the mold. Drawings, according to the product drawings, understand the material, geometric size, function and appearance requirements of the product, such as color, spots, impurities, joint marks, dents, etc. According to the mold drawing, you can understand the equipment used for mold debugging, and whether the technical parameters are the same as the mold requirements. If it is consistent, whether the tools and accessories are complete, pass the drawing to the next process after review.

  

Equipment inspection.


Check the oil circuit, water circuit, circuit, mechanical movement parts of the equipment used, maintain the equipment as required, and check the technical parameters of the equipment: the diameter of the positioning ring, the size of the nozzle sphere R, the nozzle aperture, the minimum mold thickness, and the maximum mold thickness , The mold moving stroke, tie rod spacing, ejection method, etc. must be full.

  

Fully test the requirements, make preparations before driving, the test equipment should be consistent with the machine in the future production, this is because the technical parameters of the equipment are related to the technical standards of the test products, temperature fluctuations, and pressure changes The amplitude, the time of the empty cycle and the stability of the mechanical and hydraulic transmission will affect the quality of the product. Injection molds. If a large clamping force is used to test the mold, the molding conditions may need to be changed.


  Material preparation.


  Check whether the specifications, models, grades, additives, color masterbatches, etc. of the processed plastic raw materials meet the requirements, and dry the raw materials with high humidity to determine the ratio.


In principle, the raw materials should be the raw materials specified in the drawings, because the mold is designed according to the physical and mechanical properties of the raw materials, and it can also use the raw materials with good fluidity, easy and fast curing, and good thermal stability. Test the structure of the mold to make all parts of the product. The fillet, wall thickness, and rib distribution are truly reflected, and can be used as a reference for modifying the injection mold.

  

Mold inspection.


Before the injection mold is installed on the injection machine, the mold should be inspected according to the mold drawing, so as to find the problem in time and repair the mold. According to the injection mold assembly drawing, you can check the shape of the mold, the size of the positioning ring, the size of the main runner entrance, and the nozzle. The size of the matched sphere, the inlet and outlet of cooling water, the height and width of the pressure plate, the gating system of the mold, the cavity, etc. need to be opened for inspection. When the movable mold and the fixed mold are separated, the direction marks should be noted to avoid Mistakes when closing.


  Injection molding injection molding processing is a very precise process, which contains knowledge points of many disciplines, so be careful to avoid causing some product defects.

  

1. For different materials, the temperature required during injection molding is also different. If the temperature is too high or too low, it will have an unfavorable effect on the processing of the material, which will adversely affect the finished product. For example, when the temperature is too low, there will be some abnormalities in the color of the liquid material. When the temperature is too high, the product will have the appearance of burrs after it is produced, and the quality of the product will be up to Not in demand.


2. It is necessary to pay attention to controlling the speed in the pouring channel during injection molding. If it is too immediate, there will be burrs, and it will also cause overfilling and burnt. If it is too slow, there will be shrinkage. , And simple cracking, etc., so you must pay attention to the control of its processing speed when pouring, so that the quality of the products produced can meet the requirements.


3. Pay attention to the cooling time during the injection molding process. The detailed required time also needs to be determined according to the details of the processed product. The cooling time will have a greater impact on the processing of the injection mold and the brightness of the finished product, so It is necessary to pay more attention.

  Ningbo Osbel Injection Molding Co., Ltd. [Tel: 131-1665-1525] is an injection molding manufacturer whose products involve daily-use plastic product injection molds, medical plastic molds, electronic and electromechanical injection molds and other industries. Professional injection mold manufacturers are committed to (injection _Injection molding_plastic mold_injection mold_mold processing_injection mold quotation), etc., can meet the processing of various injection products within 2000 grams.


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