The first level of maintenance of the mold

The first level of maintenance of the mold refers to the operator in the production of the mold and routine maintenance, the main content for 

the cleaning, lubrication and inspection.

The installation of the maintenance of the mold

mold before the upper and lower surfaces of the mold to wipe to ensure that the mold mounting surface and the press table surface is not 

subject to pressure injuries and the mold in the production of the parallelism of the upper and lower mounting surface.After the mold is 

loaded, open the mold and clean all parts of the mold, especially the guiding mechanism, for the surface parts of the mold, the shape of the 

surface clean, in order to ensure the quality of the parts. Lubricate the sliding parts of the mold and apply grease. Check all parts of the mold, 

especially the safety parts. Such as: safety side pins, safety screws, side guards, punching waste path.

Maintenance in production

Regularly oil the corresponding parts of the mold in production. Such as: stretching die of the pressure circle, rounded corners: trimming die 

of the knife mouth parts: flange knife block part.Regularly clean up the waste material of the small hole waste channel of the trimming 

punching mold.

Maintenance after production

After the end of production, we should carry out a comprehensive inspection of the molds.The molds should be comprehensively cleaned and 

wiped to ensure the cleanliness of the molds.The waste in the molds should be cleaned up to ensure that there is no waste in the waste box.

Feedback the status of the mold and the condition of the mold after use to the mold record sheet.

Secondary maintenance of mold

The secondary maintenance of mold refers to the regular and systematic maintenance of the mold according to the technical status and 

complexity of the mold. This maintenance work by the mold repair personnel to complete, and according to the maintenance of good records. 

The following is a description of the requirements and methods of secondary maintenance for different parts.

Drawing mold convex mold, concave mold: drawing mold convex, concave mold is the main problem is the pulling hair and type surface of the pit, 

the main maintenance of the mold's rounded corners of the pulling hair parts of the polishing. If there is a crater, the mold should be welded, and then repair.

Guide parts (guide pillar, guide sleeve and guide plate, etc.): mold in the work of the phenomenon of pull marks. Produce and the main reason is dirty lubricant 

and guide clearance bias. Guide parts to take the pull mark with oil stone to push the smooth polishing method to eliminate.

Trimming knife edge: mold in the use of the process of knife edge part easy to collapse and edge collapse phenomenon. At this time to the 

mold damage to the edge of the repair welding repair matching

Spring and other spring parts; in the process of use, spring tube is one of the most easily damaged parts of the mold, usually new cracks and 

deformation phenomenon, the approach taken is to change, but the replacement process must pay attention to the specifications of the 

spring and the model, spring specifications through the color, diameter and length of the three items to determine that only in the case of 

these three are the same can be replaced.

Punch, punch set: molds used on the punch, punch set most of the standard parts, molds in the use of the process of the punch is easy to 

break, bending and chewing bad phenomenon. Punching sleeve is generally chewed bad. Damage to the punch and punch sleeve are 

generally replaced with parts of the same specifications. The parameters of the punch mainly include the size of the working part, the size of 

the mounting part, the length size and so on.

Fastening parts: check whether the fastening parts are loose, damage phenomenon, the way to take is to find the same specifications of the 

parts to be replaced.

Pressing and unloading parts: Pressing parts such as pressure plate, Yuli rubber, etc., unloading parts such as unloading plate, pneumatic top material device. 

Maintenance to check the assembly of the parts of the relationship and there is no damage to the damaged part of the repair, pneumatic data to check for 

air leakage phenomenon, and take measures for the specific situation, such as air tube bad for replacement, etc.