Primary maintenance of molds primary maintenance of molds refers to the normal maintenance of molds by operators during production. The primary content is cleaning, smoothing and viewing.

1、 Maintenance during mold installation. Before mold installation, the upper and lower surfaces of the mold shall be cleaned to ensure that the mold equipment surface and the working table of the press are not under pressure and damage the parallelism of the upper and lower equipment surfaces of the mold in production. After the mold is installed, open the mold and clean all parts of the mold, especially the guide organization. For the mold of external parts, the mold surface shall be cleaned to ensure the quality of parts. Smooth the sliding parts of the die and apply smooth grease. Inspection of all parts of the die, especially safety parts. Such as safety side pin, safety screw, side guard plate, punching waste channel, etc.

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2、 Maintenance in production, some of the corresponding parts of the mold are oiled regularly in production. Such as: pressing ring and fillet of drawing die; Knife edge of trimming die; Flanging knife block, etc. Regularly sort out the small hole waste channel of trimming and punching die. Maintenance after production after production, all the molds shall be checked after production. Clean all the molds to ensure the cleanliness of the molds. Clean the waste in the mold to ensure that there is no waste in the waste box. Faithfully reflect the application status and post application status of the die on the die ticket. Secondary maintenance of molds secondary maintenance of molds refers to the maintenance of the timing system for molds based on the skill status and disorder of molds. This maintenance operation shall be completed by the mold repair personnel and recorded according to the maintenance status. The following describes the requirements and methods of second warranty for different parts. Drawing die punch and die: the main problem of the punch and die of the drawing die is roughening and indentation of the profile. During maintenance, the rounded roughened part of the die shall be polished. If there is a pressure pit, the mold shall be repaired and smoothed. Guide parts (guide post, guide sleeve and guide plate, etc.): the die will show signs such as pull marks during operation. The main causes are smooth, dirty oil and deviation of guide gap. Pull marks on guide parts shall be eliminated by polishing after being pushed by oilstone. Trimming edge: during the application of the die, the edge is prone to collapse and edge collapse. At this moment, the damaged knife edge of the die shall be repaired by welding

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Elastic parts such as tension spring: in the process of application, tension spring is one of the most easily damaged parts of the die, which usually presents the appearance of cracking and deformation. The method adopted is replacement, but in the process of replacement, we must pay attention to the standard and type of tension spring. The standard type of tension spring can be replaced only when the three items are the same.

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Punch and punch sleeve: the punch and punch sleeve used on the die are large, and some of them use standard parts. During the application of the die, the punch is easy to break, zigzag and chew. The punching sleeve is usually gnawed. The damaged punch and punch sleeve are usually replaced with the same standard parts. The parameters of punch mainly include operation scale, equipment scale, length scale, etc.

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Fastening parts: check whether the fastening parts are loose or damaged. The method adopted is to find the same standard parts for replacement. Pressing and unloading parts: pressing parts such as pressing plate and Youli glue, unloading parts such as unloading plate, pneumatic jacking equipment, etc. During maintenance, check the installation contact and damage of each part, and correct some damaged parts. Check whether there is air leakage by pneumatic jacking, and take measures for detailed conditions. Replace the damaged air pipe.