Pipe fitting expansion limiting mechanism of novel structure

• Main Authors: ZHANG QUAN, GUO HUI, WEN HUAXUAN, DING GUOQING, CHEN YIWEI, WANG CHENG, ZHU GUANGBIN
• Format: Patent
• Language: Chinese; English
• Published: 03.07.2020
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention discloses a pipe fitting expansion limiting mechanism of a novel structure. One end of an expansion shaft extends into a sliding through cavity of a base body; a plurality of expansion blocks are slidably mounted at one end of the base body and arranged around the expansion shaft; the expansion blocks and the expansion shaft are matched through a first guide face and a second guide face; a positioning shaft sleeve is arranged outside all the expansion blocks in a sleeving mode; and clamping gaps used for clamping pipe fittings are formed between the inner wall of the positioningshaft sleeve and the outer walls of the expansion blocks. According to the optimally-designed pipe fitting expansion limiting mechanism of the novel structure, a driving air cylinder drives the expansion shaft to move, the first guide face and the second guide face are matched to drive the expansion blocks to expand outwards, thus the pipe fittings are clamped between the expansion blocks and thepositioning shaft sleeve,