Crusher for sand making

The invention discloses a crusher for sand making, and relates to the technical field of crushers. The device comprises a machine box, a feeding hopper is fixedly installed on the upper surface of the machine box, a first discharging hopper is fixedly installed on the inner wall of the machine box, a second discharging hopper is fixedly installed on the inner wall of the machine box, the first discharging hopper and the second discharging hopper vertically correspond to each other, and a discharging hopper is further fixedly installed on the inner wall of the machine box; a V-shaped pressing plate and a second crushing convex block are driven to vertically ascend and descend in a reciprocating mode, sand is crushed while the V-shaped pressing plate and the second crushing convex block vertically ascend and descend in a reciprocating mode in cooperation with the action of a first crushing convex block, meanwhile, crushed sand falls on the outer walls of two crushing rollers through a first discharging hopper,