Press roller spacing adjusting device

The utility model relates to a compression roller distance adjusting device which comprises a rack, an upper compression roller, a lower compression roller, two adjusting plates, a supporting ring, a spring, a second sliding block and two cams. The two ends of the upper compression roller and the lower compression roller are fixed between the racks through two adjusting plates; the two ends of the upper pressing roller are rotationally connected with cams respectively, and shifting rods are fixed to the cams. The adjusting plate is provided with a spring fixing groove, one end of the spring is fixed in the spring fixing groove, the second sliding block is located in the spring fixing groove, and the other end of the spring is connected with the second sliding block; the supporting ring is fixed to the second sliding block and abuts against the lower portion of the cam. The utility model has the advantages that the structure is simple, the disassembly and assembly are convenient, the distance between the compr