| 摘要 |
Pipe fitting tool for manufacturing pipe fittings in plastics, having a spigot end (12) with a smooth inner wall (15) and a smooth outer wall (16), which is connected by radial and axially spaced walls (17), which are integrated to the other parts of the spigot end. The pipe fitting tool comprises an annular casting mould (30) having a number of tongue shaped core bodies (21), forming an annular series parallel to the axis. The core bodies are guided in and out of the casting moulds in the spigot end of the pipe fittings. For each core body (21), is a pressure pin (22), which are arranged for movement in a pressure contact against the adjacent tongue, performing a pre-tensioning force against the core body. |
