What Are The Ways To Improve The Life Of Injection Molds And How To Polish Injection Molds?

What are the ways to improve the life of injection molds and how to polish injection molds?

How to improve the service life of injection molds

For users, increasing the service life of injection molds can greatly reduce stamping costs. The factors that affect the service life of injection molds are as follows:

1. Material type and thickness;

2. Whether to choose a reasonable injection mold gap;

3. The structure of the injection mold;

4. Whether the material has good lubrication during stamping;

5. Whether the injection mold has undergone special surface treatment;

6. Such as titanium plating, titanium carbonitride;

7. Align the upper and lower turrets;

8. Reasonable use of adjusting gaskets;

9. Whether the oblique blade injection mold is used correctly;

10. Whether the mold base of the machine tool is worn or not;

Injection mold polishing

1. The importance of mold grinding

Regular polishing of the injection mold ensures consistent stamping quality. Polishing the injection mold regularly can not only increase the service life of the injection mold, but also increase the service life of the machine tool. Must grasp the correct timing of sharpening.

2. The specific characteristics of injection molds need to be sharpened

For the sharpening of injection molds, there is no strict number of hammer strokes to determine whether sharpening is required. This mainly depends on the sharpness of the blade. Mainly determined by the following three factors:

(1) Check the fillet of the cutting edge. If the fillet radius reaches R0.1mm (the maximum R value cannot exceed 0.25 mm), sharpening is required.

(2) Check the stamping quality. Are there big burrs?

(3) Determine whether sharpening is required according to the noise of machine punching. If the same pair of injection molds make abnormal noises during punching, it means that the punches are blunt and need to be sharpened.

Note: The edge of the blade is rounded or the back of the blade is rough. Sharpening should also be considered.

3. Sharpening method

There are many ways to sharpen injection molds. This can be achieved with a special sharpener or on a surface grinder. The sharpening frequency of the punch and the lower die is generally 4:1. Please adjust the height of the injection mold after sharpening.

(1) The harm of incorrect sharpening method: incorrect sharpening will aggravate the rapid damage of the blade of the injection mold, resulting in a greatly reduced number of hammer strokes per sharpening.

(2) The benefits of the correct sharpening method: Regular sharpening of the injection mold can keep the punching quality and accuracy stable. The blade of the injection mold is damaged slowly and has a long service life.

4. Sharpening rules