1. Space saving, the special structure integrated by the square oblique guide block and the wedge-shaped tight 

block makes the overall structure more compact and can reduce the size of the mold.

2. The side core sliding block locking mechanism stabilizes the side core sliding block through the ball plunger

3. The side core puller reset mechanism structure, the main body guide part has a built-in spring assembly, and the gravity 

direction can also be used with confidence.

4. Simple structure and low processing cost, no need to do the complicated calculation of side core puller stroke.