Mold of rubber-coated chain wheel, mold rubber sealing method and mold runner structure

• Main Authors: LING YI, CHEN ZENGBAO, CHENG TAO, SUN WEIHUA
• Format: Patent
• Language: Chinese; English
• Published: 12.07.2024
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The mold comprises an upper mold body and a lower mold body, a cavity used for producing the rubber-coated chain wheel is formed between the upper mold body and the lower mold body, and the shape of the cavity is matched with the outer contour of the rubber-coated chain wheel. The upper die is installed on equipment, the upper end of the lower die is slidably connected to the lower end of the upper die, and the parting joint of the upper die and the lower die is located in the middle of sprocket teeth, so that the lower end face of the upper die and the upper end face of the lower die are pressed on the upper tooth face and the lower tooth face of a sprocket framework respectively. Therefore, the parting part of the mold is arranged in the middle of the chain wheel teeth, design space is reserved for injection runners of the upper mold and the lower mold, glue sealing of the upper tooth surface and the lower tooth surface of the chain wheel teeth is guaranteed, the lower end face of the upper mold and the upp