Machining jig for high-precision plastic mold

The utility model discloses a processing jig for a high-precision plastic mould, which comprises a processing base and a plastic mould, the plastic mould consists of an inner cylinder and an outer cylinder, an annular cavity for plastic moulding is formed between the inner cylinder and the outer cylinder, and two half cylinders are slidably mounted on the processing base. And a driving device used for driving the two half cylinder bodies to move relatively is installed at the bottom of the machining base, second sliding groove openings are formed in the two sides of the inner cylinder correspondingly, sliding plates are movably inserted into the second sliding groove openings, and a lifting mechanism is installed between the two sliding plates and used for lifting the sliding plates. The plastic barrel disassembling device is convenient to operate, when a formed plastic barrel needs to be disassembled, only the driving device needs to be started, the driving device drives the two half barrel bodies to move to