There are two configurations for the piercer's frame. One is the roller and bearing housings installed in two drums, turn the drum to adjust the feed angle, in the horizontal configuration of the roller piercing machine, drums arranged in the rolling line on both sides of the arch; the other is In the vertical arrangement of the roller punch, the drum is arranged in the rack between the four columns, above and below the rolling line. The former form of punching machine when the roll, open the rack cover, with the crane one by one out of the roll. After a punch for roll, the first roll is located in the next roll, the rack cover on behalf of the open after the crane out with a crane. The other is our Φ76mm punching machine, the frame structure is simple, the roller bearing seat is arranged in the window of the arch, by two different sizes of the arch on the window to set the feed angle. Feed angle adjustment with the gasket, the actual operation, do not adjust the feed angle.
In order to meet the wall thickness accuracy requirements of perforated capillary, in the rack design must pay special attention to the minimum rebound and maximum bending strength problems. Vertical arrangement of the roll and listed on both sides of the bearings are installed in the drum, cone roller piercing machine to adopt this arrangement.
The roll is replaced with the top cover of the frame. To shorten the replacement time, the top cover is designed to be hydraulic or removable, which reduces the height of the plant.
