For the rotary clamping structure of cylinder block, the power source is usually cylinder (compressed air). In addition to the horizontal movement of the cylinder shown in Figure 1, driving the connecting rod mechanism to make the clamping plate (block) structure rotate; The other is that the cylinder makes a vertical movement and drives the connecting rod mechanism to make the clamping plate (block) structure rotate. The former usually uses 2 ~ 4 cylinders to realize the clamping structure of the four sides of the cylinder block; The latter usually uses a larger cylinder to realize the clamping structure of the four sides of the cylinder block. The common advantages, disadvantages and suitability of the two cylinder block sand casting rotary clamping structures are as follows:
Due to the rotary clamping structure of cylinder block sand casting, its power is generally cylinder (compressed air), so it has the advantages of high automation rate, that is, high production efficiency. It is suitable for mass assembly line production with high production efficiency and fast beat.
However, the rotary clamping structure of cylinder block sand casting has poor universality because its clamping point (i.e. clamping size) is fixed, that is, a set of lower core clamping is likely to only meet the casting production of a certain cylinder block; In other words, this kind of cylinder block sand casting clamping structure is difficult to apply to those cylinder blocks with similar overall dimensions. Not only that, it also has some shortcomings, such as difficult design and manufacture, high dimensional accuracy requirements and high manufacturing cost.