Conical double-plastic-extruding machine barrel

A conical double-extruding machine barrel comprises a first machine barrel section, a second machine barrel section and a third machine barrel section, and is characterized in that wear-resistant alloy sleeves are inserted in inner holes of the second machine barrel section and the third machine barrel section in a penetrating mode, and a front opening of the alloy sleeve of the second machine barrel section is matched with a rear opening of the inner wall of the first machine barrel section. And the rear opening of the alloy sleeve of the second cylinder section is opposite to the front opening of the alloy sleeve of the third cylinder section. The wear-resisting sleeve has the advantages that the wear-resisting sleeve adopts a detachable structure and can be replaced in time after being worn, so that the wear-resisting sleeve is convenient to replace, the service life of the machine barrel is prolonged, and the material processing efficiency is improved; the wear-resisting sleeve is an alloy sleeve, the app