Tubeless rim shrinkage die

• Main Authors: LIU CONGXIAO, ZHENG ZHIKANG, LIN QINGBAO, GUAN BUJUN, ZHENG FANGMENG, WU SHAOQUAN
• Format: Patent
• Language: Chinese; English
• Published: 11.07.2023
• 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 utility model discloses a tubeless rim shrinkage die which comprises an upper die, a lower die and a retainer plate, an upper die cavity is arranged in the upper die, the inner wall of the upper die cavity is inclined, a plurality of shrinkage die petals, a plurality of sliding parts and a plurality of guide rails are arranged in the upper die cavity, one side of each sliding part is arranged to be an inclined plane consistent with the slope of the inner wall of the upper die, and the other side of each sliding part is arranged to be an inclined plane. The guide rails are fixedly connected with the inner wall of the upper die, the sliding pieces are clamped and embedded in the guide rails respectively and can move along the guide rails, the retainer plate is detachably connected with the bottom end of the upper die, and the sliding pieces are located on the retainer plate; the same first distance a is arranged between the shrinkage die petals, when the upper die and the lower die are closed, the distance