No matter what object has a certain service life, injection mold is no exception, when used to a certain extent after the injection mold will fail, need to open the mold to produce a new mold, the service life of the injection mold is affected by a variety of factors, only a complete understanding of these factors of the injection mold factory can prescribe the right medicine to produce a longer life of the mold. Here are some of the factors listed for you.
1. Factors affecting the life of plastic shell molds.
1. The action of the slider of the plastic shell mold should be smooth and not stuck. It is necessary to ensure that the parts are not deformed, and there can be no dead action, unevenness, loosening and other phenomena;
2. The oil groove should be opened on the guide surface of the large slider;
3. The large slider must have a cooling channel;
4. The slider and slide part adopt HVE6 combined structure, which cannot be loosened
5. When the sliding stroke is too long, the guide must be increased on the die base, and the guide length reaches 1 of the width under normal circumstancesAbout 5 times is suitable, when the guide slider and the guide rail are matched, the 2 3 pipes of the guide rail section of the slider in the guide rail should be placed in the guide rail;
6. The oblique guide pillar hole and the oblique guide pillar must be left with more than 02mm gap, it is forbidden to cooperate with the same specifications;
7. The angle of the slope guide is less than the slope of the row clamping surface by 2 degrees, and the clamping block of the large slider must be extended into the lower die of 15-20 mm, and the 10 degree interlock counterpressure of the inclined plane.
8. The cavity of the combination of the circular surface slider, the angle of the longitudinal and circular surface slider, and the angle of the oblique guide pillar are 2 degrees apart, and the slider of the same size is prohibited, and the final position of the slider Z is above the mold, and it must be pushed or pulled with a slingshot, and the wave beads can not be used in the form, so as not to hit the circular surface slider and the oblique guide pillar when the slider is clamped in the plastic shell mold.
9. In addition, all rows of the friction surface must be equipped with wear-resistant plates, the length of the friction surface is greater than 30mm, and the width is greater than 50mm. The details and row pressure plates need to be quenched and hardened to more than 52HRC, and the larger part is nitrided or hardened according to the requirements of the plastic shell mold before molding.
Second, how to improve the life of plastic shell mold.
1. Do a good job in the maintenance of the mold during the injection molding production process.
1) In the injection molding production process, the molten plastic material enters the injection mold through a certain pressure through the gate for molding. Therefore, the injection mold will be subjected to a lot of injection pressure. Therefore, correct and reasonable adjustment of injection pressure, injection speed, clamping force and effective distance of tie rod can reduce the damage of injection mold.
2) In the use of injection molds, it is necessary to control the temperature of injection molds reasonably and correctly, and at the same time, it is necessary to observe the use of injection molds at all times.
3) Before the injection mold is locked, attention should be paid to check whether there are other foreign objects in the injection mold cavity that have not been taken out, especially whether there are residual products that have not been taken out, and if so, they should be cleaned up in time to avoid affecting the mold locking and causing damage to the mold.
2. Daily maintenance of mold storage.
1) After the injection molding is completed, the mold should be closed, so as not to let the humid air contact the cavity and core, resulting in rust. Anti-rust oil or release agent can also be applied to the core and inside the cavity to prevent rust from forming in the injection mold after long use. However, it should be noted that the anti-rust oil and other substances applied should also be wiped clean when re-used to avoid other defects. In addition, the cavity and core need to be cleaned regularly to avoid corrosion caused by residual products.
2) If the injection mold is not used for a long time, the residual water in the cooling channel should be removed in time to avoid rust in the cooling channel.
3) The place where the mold is stored should be kept dry, away from corrosive areas, and the mold should be maintained daily.
The above is for you to introduce the factors that affect the life of the plastic shell mold and how to maintain the relevant knowledge, I hope it can help you, if you don't understand anything, leave a message or private message, and answer it for you at any time