How to maintain Precision injection mold
Compared with other molds, the Precision injection mold has a more complex and precise structure, and requires higher operating and maintenance products.Therefore, in the entire production process, the use of positive solutions and careful maintenance, maintenance is of great significance to maintain the normal production of the enterprise and improve the efficiency of the enterprise.
1 Select the appropriate molding equipment and determine the reasonable process conditions. If the injection molding machine is too small, it cannot meet the requirements and isToo big
also is Another waste of energy and it will damage the mold or template due to improper adjustment of the clamping force, and at the same time reduce the efficiency.
When selecting an injection machine, it should be based on the maximum injection volume, the effective distance of the drawbar, the mold installation size on the template, the maximum mold thickness, and the Minimum Mold Thickness, template stroke, ejection method, ejection stroke, injection pressure, mold clamping force, etc.Carry out the verification, It can be used after meeting the requirements
Too much clamping force,The injection pressure is too high，Too fast speed, mold temperature too high will cause damage to the service life of the mold.
2.After the mold is mounted on the injection machine, the advanced air mold should be operated.Observe whether the movement of each part is flexible or not
Abnormal phenomena,
Ejection stroke,
Whether the starting trip is in place,
Whether the parting surface is closely matched,
Whether the pressing plate screws are tightened, etc
3When the mold is used, the normal temperature should be maintained and the service life of the mold can be extended.
4 Sliding parts on the mold, such as guide post, return needle, push rod, core, etc., should be observed at any time, regular inspection, timely
Scrub and grease,
Especially in the summer when the temperature is high,
Add oil at least twice per shift.
To keep these sliders flexible,
Prevent tight bite
5. Before each clamping, attention should be paid to whether the cavity is clean, absolutely allowed to leave residual products, or any other residual
When cleaning any foreign body, do not use hard tools to prevent the surface of the cavity from being damaged.
6 Mold cavity surface with special requirements, surface roughness
Ra Less than or equal to 0.2 cm , never cleaned by hand，neve cleaned use Cotton wipes, it must blow with compressed air, or gently wipe with fine napkins and fine absorbent cotton dipped in alcohol.
7.Make the surface of the bright cavity gradually dull and dull and reduce the quality of the product,
So regular scrubbing is required。Scrub，Make the surface of the bright cavity gradually dull and dull and reduce the quality of the product,
So regular scrubbing is required, After scrubbing with alcohol or ketone preparations, dry immediately
8. When temporary shutdown is required for operation, the mold should be closed to prevent the cavity and core from being exposed to prevent accidental damage
Injuries, IF downtime expected to exceed 24 Hour, should be sprayed on the surface of cavity, core antirust oil or demultifying agent, especially in humid areas and Rainy season, IFTime short also should do antirust processing。 Water vapor in the air can degrade the surface quality of the cavity, The surface quality of products decreases. When used the mould again, Oil should be removed from the mold Wipe clean before using 。
There are mirror cleaning requirements after the compressed air is blown dry again
Dry with hot air， Otherwise, the product will appear defects due to exudation during molding
Use.Reasonable determination of process conditions is also one of the contents of proper use of molds,
Too much clamping force,
The injection pressure is too high