Automatic pitting device of metal pipe drawing equipment

Abstract

The invention discloses an automatic pitting device of metal pipe drawing equipment. The automatic pitting device of the metal pipe drawing equipment comprises a mounting frame arranged on a mold wall, a pitting device arranged on the mounting frame in a sliding manner and used for pitting a metal pipe and a hydraulic driving device arranged on the mounting frame in a sliding manner and used for driving the pitting device to work; the hydraulic driving device is connected with the pitting device; a lifting device used for driving the pitting device to move up and down is further arranged on the mounting frame; and the pitting device, the hydraulic driving device and the lifting device are connected with a control system. Compared with a manual pitting mode in the prior art, the automatic pitting device of the metal pipe drawing equipment has the advantages that the pitting distance and depth are effectively controlled, empty drawing and pipe breaking are avoided, the labor intensity of workers is reduced, the yield is increased, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of metal pipe drawing processing equipment, in particular to an automatic pitting device for metal pipe drawing equipment. Background technique [0002] Double drawing is an important process in the production of metal casting and rolling. The drawing process adopts the drawing of the floating core. After the core is loaded into the rolled tube, it needs to be pitted and positioned before drawing to prevent the core from running. , resulting in empty pull. [0003] In the second pass of the current metal pipe, it is necessary to manually punch a small pit on the surface of the metal pipe to clamp the core to prevent the core from running. The size and position of the pit produced by this manual pitting method Uncertain, mainly based on the operator's work experience to decide. The position and size of the pits are not uniform, often resulting in the phenomenon of empty pulling and breaking the tube, and th...

AI Technical Summary

Problems solved by technology

The position and size of the pits are not uniform, often resulting in the phenomenon of empty pulling and breaking the tube, and the positioning is not allowed to hit the inner core of the metal tube, causing damage to the core. After the core is damaged, it is not easy to find, directly causing scratches on the inner wall of the metal tube. As a result, the yield of the metal pipe is low, which reduces the production efficiency and increases the production cost. On average, the operator needs to tap 3 to 6 times for each hole. The labor intensity is high and it is easy to cause industrial accidents.

There are also some methods that use the method of installing the pitting device on the trolley to realize automatic pitting. In this way, after the trolley pulls out a section of pipe, the core head may run due to the vibration of the trolley, and the pit is hit in front of the core head. At this time, it is necessary to cut off the tube head again and press the tip of the core again, which is time-consuming and labor-intensive.

[0004] At present, there is a Chinese patent authorization announcement number CN206567397U which discloses an automatic pitting device for metal pipe drawing equipment. Although the patent pits the metal pipe through a pitting mechanism, the pitting mechanism of the patent is fixed on the drawing On the trolley, the core head may move due to the pulling stop and vibration of the drawing trolley, and the hole-making mechanism cannot effectively control the distance and depth of the hole, and the above-mentioned problems still exist

Images