Pipe expanding device

The utility model relates to the technical field of pipe machining, in particular to pipe machining equipment. The technical problem to be solved by the utility model is to provide the pipe expanding device capable of controlling the expanding force. The pipe expanding device comprises a bottom plate, a top pipe, a mandrel, a handle and a rubber sleeve. A cam is arranged at the end part of the handle; the rubber sleeve is positioned between the top pipe and the bottom plate; the handle is positioned above the bottom plate; the mandrel is in sliding fit with the bottom plate, the rubber sleeve and the top pipe, one end of the mandrel is hinged to the cam, and a check block is arranged at the other end of the mandrel; the rubber sleeve and the top pipe are located between the check block and the bottom plate. 本实用新型涉及管加工技术领域，尤其是管加工设备；本实用新型所要解决的技术问题是提供一种能够控制扩张力度的胀管装置。胀管装置，包括底板、顶管、芯轴、把手和胶套；把手的端部设有凸轮；胶套位于顶管和底板之间；把手位于底板的上方；芯轴与底板、胶套和顶管均滑动配合，芯轴的一端与凸轮铰接，芯轴的另一端上设有挡块；胶套和顶管位于挡块和底板之间。