Mould for preparing rubber roller

The utility model discloses a mould for preparing a rubber roller, which comprises an upper mould and a lower mould, wherein the upper mould comprises an upper mould plate and upper mould cavities; four round upper mould cavities are uniformly formed in the upper mould plate; a glue injection opening communicated with the outer part is formed in the center of the upper mould plate; the lower mould comprises a lower mould plate, lower mould cavities and a glue flowing groove; four round lower mould cavities are uniformly formed in the lower mould plate; a communicated groove is formed between two adjacent lower mould cavities; a glue inlet is formed in each end of the communicated grooves; the glue flowing groove is a cross glue flowing groove; the four ends of the cross glue flowing groove are communicated with the four communicated grooves; the glue injection opening of the upper mould cavities is communicated with the center of the cross glue flowing groove of the lower mould cavities; location pinholes are