Shenzhen Donglai Precision Mold Company stipulates that the basic maintenance methods for injection molds and plastic molds
The first level maintenance of injection molding plastic molds refers to the normal maintenance of molds by operators during production and after injection molding is completed. The primary content is cleaning, smoothing, and adding embroidery oil
1、 The maintenance of plastic injection molds during mold installation requires cleaning the upper and lower surfaces of the molds before installation
Ensure that the surface of the mold equipment and the working table of the press are not compressed or damaged, and that the parallelism of the upper and lower equipment surfaces of the mold during production. After installing the plastic injection mold, open the mold and clean all parts of the mold, especially the guiding structure. Regarding the outer surface of the mold, its surface should be cleaned to ensure the quality of the parts. Smooth the sliding parts of the mold and apply smooth grease. Inspection of various parts of the mold, especially safety parts. For example: safety side pins, safety screws, side guard plates, punching waste channels, etc.
2、 In the production of injection molding, some of the corresponding plastic molds for maintenance are coated with oil.
For example, the pressing ring and rounded corners of the drawing die; The cutting edge of the trimming die; The flipped blade is a bit waiting. Regularly sort out the small hole waste channel of the trimming and punching die. After the completion of injection molding, all molds should be inspected for maintenance. Plastic injection molds are thoroughly cleaned to ensure their cleanliness. Clean up the waste materials inside the mold to ensure that there is no waste in the waste box. Accurately reflect the usage and post usage status of the mold on the mold voucher. Secondary maintenance of molds refers to the scheduled maintenance system for molds based on their skill level and level of disorder. This maintenance task is completed by the mold repair personnel and recorded according to the maintenance status. The following describes the requirements and methods for secondary protection of different parts. Drawing die convex and concave molds: The main problem with the convex and concave molds of the drawing die is the burrs and dents on the mold surface. During maintenance, the first step is to polish the rounded corners of the mold with burrs. If there are indentations, the mold needs to be repaired by welding and then smoothed. Guiding components (guide pillars, guide sleeves, and guide plates, etc.): The mold will exhibit signs of pulling marks during operation. The main causes of occurrence include smooth oil stains and biased guide gaps. The pulling marks on the guide parts can be eliminated by using an oilstone to push them forward and then polishing them. Trimming edge: During the use of injection molds, plastic molds are prone to blade breakage and edge collapse. At this moment, it is necessary to repair welding and repair the damaged blade of the mold
Elastic parts such as tension springs:
During use, the tension spring is one of the most easily damaged parts of the mold, usually exhibiting signs of cracking and deformation. The adopted method is replacement, but during the replacement process, attention must be paid to the standard and type of the tension spring. The standard type of the tension spring is determined by three factors: color, outer diameter, and length. Only when these three factors are the same can it be replaced.
Punch and sleeve:
The punch and punch sleeve used on the mold are mostly standard parts, and during the use of the mold, the punch is prone to breakage, bending, and gnawing. The punching sleeve is usually chewed off. The damage to the punch and punch sleeve is usually replaced with the same standard parts. The parameters of the punch mainly include the scale of the operation, the scale of the equipment, the length scale, etc.
