Heating and heat preservation device of grain press-fitting mold

The utility model provides a heating and heat preservation device of a grain press-fitting die, which comprises a workbench (1) and a die main body (2) arranged on the workbench (1), and is characterized in that an annular water jacket (3) is sleeved on the outer side of the die main body (2), sealing rings (6) correspondingly matched with the die main body (2) are arranged at the upper end and the lower end of the annular water jacket (3), and silicone rubber (7) is wrapped outside the sealing rings (6). The diameter of an inner hole of the annular water jacket (3) is larger than the diameter of the outer wall of the mold body (2), so that a cavity (4) is formed between the annular water jacket (3) and the outer wall of the mold body (2), the cavity (4) is filled with liquid (5), and the annular water jacket (3) is communicated with a thermal circulation water assembly through a pipeline. The die is simple in structure, convenient to use, low in transformation cost and capable of effectively guaranteeing the