The invention discloses a toggle rod type
injection molding machine mold closing mechanism which comprises a mold moving guide sleeve on the basis of an existing toggle rod type
injection molding machine mold closing mechanism. The mold moving guide sleeve comprises a guide sleeve body and a
flange, the mold moving guide sleeve is made of a steel-clad
copper material, and the inner surface of the guide sleeve adopts a structural form of concentric grooves and spiral grooves. The mold moving guide sleeve body is of a cylindrical structure, the
flange is arranged on the outer side of one end of the guide sleeve body, and when the guide sleeve body is matched with a movable mold plate, the
flange is 3-4 mm higher than an outer hole of the guide sleeve body in the radial direction,
consumables are reduced, cost is reduced, and meanwhile waste in the
machining process is avoided. The outer layer of the mold moving guide sleeve is made of a steel-clad
copper material made of
tin bronze on the inner wall of 20# carbon structural steel, and the
wear resistance is improved due to the steel-clad
copper structure. Compared with an existing mold moving guide sleeve of a single concentric groove structure, the concentric groove and spiral groove structure can improve the guide effect on lubricating oil, the lubricating oil is more evenly distributed in the circumferential direction of a pull rod,
lubrication is more sufficient, the abrasion resistance of
moving parts is improved, abrasion is reduced, and the maintenance cost is reduced.