The utility model discloses a tool for pouring rubber materials, and belongs to the field of rubber injection equipment. In the prior art, only one workpiece to be subjected to glue injection can be performed; the glue injection efficiency is low. The utility model provides a tool for pouring a sizing material. The pouring device comprises end plates arranged on the two sides, a plurality of baffles are arranged between the end plates on the two sides, a plurality of pouring spaces are formed between the end plates and the baffles and between the baffles, limiting tables protruding inwards arearranged on one sides of the end plates and the two sides of the baffles, and workpieces are fixed in the pouring spaces through the limiting tables. According to the utility model, the plurality ofworkpieces are arranged in the plurality of pouring spaces and are fixed through the limiting tables, so that the workpieces do not shake in the glue injection process; glue injection can be conductedon multiple workpieces at the same time, machining of the multiple workpieces is completed at a time, time is greatly saved, the labor intensity of workers is reduced, the working efficiency is improved, and the beneficial effects of being simple in structure, reasonable in design and easy to manufacture are further achieved.