Stamping die maintenance is divided into two levels

Primary maintenance of stamping dies

1. Maintenance during mold installation

(1) Before mold installation, clean the upper and lower surfaces of the mold to ensure that the mold installation surface and the press worktable are not damaged and the upper and lower installation surfaces of the mold are parallel during production.

(2) After the mold is installed, open the mold and clean all parts of the mold, especially the guide mechanism. For surface molds, clean the mold surface to ensure the quality of the product. Lubricate and grease all sliding parts of the mold. Check all parts of the mold, especially safety parts, such as safety side pins, safety screws, side guards, punching waste channels, etc.

2. Maintenance during production

(1) During production, regularly oil the corresponding parts of the mold, such as the pressure ring and fillet of the drawing die; the blade of the trimming die; the flanging knife block, etc.

(2) Regularly clean the waste from the small hole waste channel of the trimming punching die.

3. Maintenance after production

(1) After production, conduct a comprehensive inspection of the mold.

(2) Clean the mold thoroughly to ensure the cleanliness of the mold.

(3) Clean the waste in the mold and ensure that there is no waste in the waste box.

(4) Report the usage status and post-use status of the mold truthfully on the order.

Secondary maintenance of stamping dies

The secondary maintenance of stamping dies is to carry out more in-depth maintenance and inspection of the dies to maintain the accuracy and working performance of the dies. The following are the main points of secondary maintenance:

Disassembly maintenance: disassemble the dies once a year, clean the inside of the dies, replace the parts with severe wear, and ensure the normal use of the dies.

Heat treatment maintenance: heat treatment maintenance is carried out once a year to eliminate the stress inside the dies and improve the service life and performance of the dies.

Rust prevention maintenance: rust prevention maintenance is carried out once a year to ensure the surface finish and rust prevention of the dies and avoid rust and corrosion of the dies.

Drawing die punch and die: polish the rounded corners of the dies. If there is a pit, repair welding and smoothing.

Guide parts: maintain the guide parts with pull marks during work, and handle them by smoothing with oilstone and then polishing.

Trimming edge: regularly repair welding the damaged edge of the die to repair the edge collapse and edge collapse.

Springs and other elastic parts: Check springs and other elastic parts, replace broken and deformed parts in time, and pay attention to the specifications and models of springs when replacing.

Punches and punch sleeves: Replace broken, bent and gnawed punches and punch sleeves to ensure that the replaced parts are consistent with the parameters of the original parts.

Fastening parts: Check whether the fastening parts are loose or damaged, and replace them if necessary.

Pneumatic system: Check whether the pneumatic system has leakage, and repair or replace it.

When performing secondary maintenance, it should be performed by professional mold maintenance personnel, and the maintenance situation should be recorded to ensure the long-term stable operation and production efficiency of the mold.

Judgment basis for secondary maintenance of stamping molds

The secondary maintenance of stamping molds is a regular systematic maintenance formulated according to the technical status and complexity of the mold. To judge whether a stamping mold needs secondary maintenance, you can base it on the following aspects:

a. Production operation time: If the mold has been in continuous production for a long time, it may be worn, fatigued or damaged. At this time, secondary maintenance is required to check and repair these potential problems.

b. Technical status of the mold: Through daily primary maintenance and inspection, if some parts of the mold show signs of performance degradation or damage, such as edge wear, spring damage, guide part pull marks, etc., these are signals for secondary maintenance.

c. Complexity of the mold: For molds with complex structures and high precision, even if they are used for a short period of time, they may affect product quality due to slight wear or deformation, so more frequent secondary maintenance is required to ensure the accuracy and stability of the mold.

d. Maintenance records: By recording the use and maintenance of the mold, the maintenance cycle and maintenance requirements of the mold can be analyzed to determine whether secondary maintenance is required.

e. The actual condition of the mold: When the mold is disassembled or overhauled, the internal structure of the mold and the actual condition of each component are directly observed. If obvious wear, cracks or other damage is found, secondary maintenance should be performed immediately.

Based on the above factors, the mold maintenance team can decide whether the mold needs secondary maintenance, as well as the specific content and schedule of the maintenance. The purpose of secondary maintenance is to extend the service life of the mold, maintain the best working condition of the mold, reduce production interruptions and improve product quality.