Anti-abrasion protection device for screw of injection molding machine

The utility model provides an injection molding machine screw anti-abrasion protection device which comprises a machine barrel, a screw driving device and an anti-abrasion protection device, the screwdriving device is embedded in the right side of the machine barrel, the anti-abrasion protection devices are embedded in the two sides of the middle of the interior of the machine barrel, and when ascrew rod rotates, the anti-abrasion protection device is arranged through a rotating ball and a rolling ball layer. When the machine barrel rotates, the anti-abrasion ring can be driven to rotate together, through the anti-abrasion ring and the screw through hole, the joint of the screw and the interior of the machine barrel is effectively avoided, the screw is limited and rotated in the machinebarrel, the screw is prevented from moving laterally, the screw abrasion is reduced, and the speed of conveying plastic to the front end in the machine barrel is increased. 本实用新型提供了一种注塑机螺杆防磨保护装置，包括机筒、螺杆驱动装置和防磨保护装置，机筒右侧嵌入设置有螺杆驱动