Pipe-expanding machine

Abstract

The invention discloses a pipe-expanding machine. The pipe-expanding machine comprises a rack, a feeding device, a pipe expanding device and a discharging device, wherein the feeding device, the pipe expanding device and the discharging device are arranged on the rack. The pipe expanding device comprises a lower rotating die and an upper punching die, wherein the lower rotating die rotates around a pivot center line which is arranged in the vertical direction of the rack, and the upper punching die is located at the corresponding position above the lower rotating die. The upper punching die is provided with at least two machining tools in the rotating direction of the lower rotating die. The lower rotating die is provided with fixing holes matched with the machining tools, and the number of the fixing holes is equal to or larger than the number of the machining tools. The feeding device inserts pipe fittings into the fixing holes under the rotating matching of the lower rotating die, and the upper ends of the pipe fittings which are inserted into the fixing holes upwards stretch out of the fixing holes to form parts to be machined. At the same time, the upper punching die drives the machining tools to move downwards to carry out punching machining on the parts to be machined of the pipe fittings at the positions of the fixing holes corresponding to the machining tools. The lower rotating die drives the machined pipe fittings to rotate to the position of the discharging device, and the machined pipe fittings are discharged through the discharging device. The purposes of precisely expanding pipes and improving the production efficiency are achieved.

Description

technical field [0001] The invention relates to the processing field, in particular to a pipe expander. Background technique [0002] With the rapid development of society, the use of pipe fittings is becoming more and more frequent. However, since the pipe fittings are unified into a circular pipe shape with a constant diameter after mass production and molding, they cannot be used for different purposes. In order to save the cost of pipe expansion in the existing pipe expansion technology, the general pipe expansion machine only processes the two ports of the pipe fitting, such as pipe expansion or punching, and needs to be carried out separately. The specific process is: first clamp and fix the middle part of the pipe fitting, and then , use the expansion die to expand the nozzle at one end of the pipe fitting, and then use the punching mechanism to punch the nozzle at the other end of the pipe fitting, which will bring the following problems: [0003] (1) When the mater...

AI Technical Summary

Problems solved by technology

[0003] (1) When the material of the pipe fitting is relatively soft, the expansion of the pipe will cause the shape of the nozzle of the pipe fitting to change, or cause bending at other positions of the pipe fitting;

[0004] (2) Since the pipe expander only expands and punches the pipe fittings, the versatility of the pipe expander is not high; when the pipe expansion is deformed, the pipe fittings can only be processed again, resulting in an increase in the cost of pipe expansion

[0005] (3) The pipe expander can only expand one pipe fitting at a time, so the production speed is limited

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