Size-adjustable clamping device for label manufacturing

The utility model discloses a size-adjustable clamping device for label manufacturing, and relates to the technical field of related tools for label manufacturing. The clamping device comprises a supporting assembly and a clamping assembly, the clamping assembly is connected to the two ends of the upper surface of the supporting assembly in a sliding mode, the clamping assembly comprises a fixed clamping plate and four sliding blocks, the sliding blocks are connected to the middles of the two ends of the bottom face of the fixed clamping plate, and circular grooves are formed in the middles of the upper surfaces of the sliding blocks. By arranging the clamping assembly, the problems that when an existing clamping device for label manufacturing is used, the position of the structure of the existing clamping device for label manufacturing is usually fixed, and the relative distance cannot be adjusted according to the sizes and lengths of different labels; the problems that according to an existing size-adjustab