07-10
Gas assisted injection molding is a special injection molding technology developed on the basis of traditional thermoplastic injection molding technology, which is suitable for special performance req...
The role of the slide in the mold is wide. It not only plays the basic role of positioning, guiding and demoulding, but also can achieve more functions according to the needs of different molds.
The design of the slide need to take into account the overall structure and mechanical properties of the mold to ensure that it can work stably and meet the requirements of the mold operation.
Lifter are usually designed on one or both sides of the mold to help the mold remove smoothly. It’s a mechanism that’s designed for demolding of grooves of the product. A lifter can be a straight line that moves in a vertical direction or a slanted plane. The lifter in the mold is a very important design element, which can avoid clamping, shorten the opening and closing time, improve product quality and reduce wear.
According to its power source, slide mechanism is mainly divided into manual slide mechanism, mechanical slide mechanism, hydraulic slide mechanism.
The slide setting should be given priority at the cavity, and the angle pin should be fixed at the core.
The movable length of the slide should be greater than 1.5 times the height of the slide.
The maximum angle of angle pin shall not exceed 23°(preferably 12°~15°).
The top corner of the slide and wedge is rounded (radius 2~3mm).
There must be a positioning mechanism after the slide is pulled out. The side of the slide requires a spring.
Bead Spring Mechanism
Suitable for small mold structure. Slide mass below 3kg can be used bead spring, bead spring diameter should be suitable for slide mass.
Side Compression Spring
If the mold shape is equipped with a support, the compression spring and stop mechanism on the side of the slide are preferred.
Dowel.
Use the dowel as a slide location structure.
Fix the slide with spring
There are three ways to fix the slide with spring :
1. The inner side of the slide with compression spring.
2. The outer side of the slide with compression spring.
3. The mold shape with support, the side of the slide with compression spring and stop mechanism.
Wedge bock is a part with a wedge angle that is used to wedge the slide tightly during mold closing.
The design requirements of wedge bock are as follows:
The angle of the slide wedge block should be 2°~5° ahead of the angle of the angle pin. The first contact between the wedge block and the slide should have rounded corners.
When the molding projection area on the slide is large, the wedge block is made into bevel to match the cavity.
When the forming area on the slide is small, the height of the wedge surface should be greater than or equal to the 3/2 height of the slide.
The wear-resistant block should be added to the wedge block in the large mold. The wear-resistant block is 0.15 ~0.25mm higher than the wedge block.
