What are the classifications and processes for automotive tyre moulds?

Classification of car tyre moulds

1: Live moulds, consisting of pattern ring, mould sleeve, upper and lower side plates.

It is distinguished from cone oriented moulds and oblique plane oriented moulds.

2: Two half moulds, consisting of two pieces: the upper mould and the lower mould.

Car tyre mould processing technology

Take the live mould as an example

1: Casting or forging blanks according to the tyre mould drawing, then rough turning and heat treatment of the blanks. The tyre mould blank is completely annealed to eliminate internal stress, and should be flattened to avoid excessive deformation during annealing.

2: Punch lifting holes according to the drawing, then machine the outside diameter and height of the pattern ring in place according to the semi-finish turning drawing, turn the inner cavity of the pattern ring with the semi-finish turning procedure, and check with the semi-finish turning sample after turning.

3: Use the processed tyre mould pattern electrode to shape the pattern inside the pattern ring with EDM and use the sample to inspect.

4: Divide the pattern ring into several parts according to the manufacturer's requirements, draw the marked lines, put them into the tooling and punch the back waist hole and tap them.

5: Cut the pattern in equal portions according to process 8, aligning it with the scribed lines.

6: The cut patterned block is polished, cleaned, rooted and vented according to the drawing.

7: Sandblast the inside of the pattern block cavity evenly, requiring a consistent colour.

8: Assemble the pattern ring, mould sleeve and upper and lower side plates together to complete the tyre mould.