Feeding device for rolling mill

Abstract

The invention provides a feeding device for a rolling mill. The feeding device for the rolling mill is characterized by comprising a machine frame, a core rod, a core rod feeding mechanism, a tube blank feeding trolley, a plurality of core rod supporting mechanisms and a plurality of tube blank supporting mechanisms, wherein the tube blank feeding trolley is connected with the machine frame through a tube blank feeding mechanism so that the tube blank feeding trolley can achieve reciprocation movement in the rolling direction, all the core rod supporting mechanisms and all the tube blank supporting mechanisms are arranged on the machine frame in the rolling direction, each tube blank supporting mechanism comprises a tube blank supporting portion and a first lifting module, each tube blank supporting portion is connected with the corresponding first lifting module so that the tube blank supporting portion can ascend and descend, each core rod supporting mechanism comprises a core rod supporting portion and a second lifting module, and each core rod supporting portion is connected with the corresponding second lifting module so that each core rod supporting portion can ascend and descend. The feeding device for the rolling mill can effectively support a tube blank and a core rod, improve the locating accuracy of the tube blank and the core rod and avoid the situation that because the tube blank and the core rod generate dry friction with a bearing component, the tube blank and the core rod are worn.

Description

technical field [0001] The invention relates to the technical field of feeding devices, more specifically, to a feeding device for a rolling mill. Background technique [0002] When the three-roller planetary pipe mill rolls pipes, it is necessary to have a tube billet feeding mechanism and a mandrel feeding mechanism. How to make the tube billet of about 20 meters match the rolling motion of the three-roller planetary tube mill to ensure the smooth operation of the rolling process is an important link in the processing of metal tubes. [0003] The feeding device involved in the Chinese patent "A Billet Feeding Mechanism for Tube and Rod Mill" (Notice No.: CN2688406Y) includes a feeding bed, a mandrel feeding mechanism arranged at the tail of the feeding bed, and a mandrel feeding mechanism arranged on the feeding bed. The feeding trolley equipped with the pusher rod and the sprocket transmission device arranged outside the feeding bed which can drive the feeding trolley to...

AI Technical Summary

Problems solved by technology

[0005] a. The axial thrust bearing installed between the trolley’s rotary pusher and the pusher rod is limited by the structural size, and the specification is small, and the rotary pusher must be close to the rolling deformation area every time it is rolled. Affected by high temperature, the life of the bearing is longer Short, after the bearing fails to rotate, there will be dry friction between the push rod head and the tube blank;

[0006] b. The billet support mechanism consists of two cylindrical rollers arranged side by side on the center line of the bed bracket. Due to the working characteristics of the three-roller planetary pipe mill, the billet rotates and advances under the push of the pushing trolley during work. The roller surface and There is forward sliding resistance between the tube blanks and scratches on the outer surface of the tube blanks, and the trolley push rod is arranged with a slender cantilever, so there is inevitably a bow phenomenon, so there are hard scratches on the push rod and each tube blank support roller, The tube billet support roll with scratched surface will seriously affect the product quality and increase the replacement cost of the support roll parts;

[0007] c. The elastic impact wheel of the trolley and the elastic swing mechanism of the mandrel support mechanism are not reliable, and there is a problem of wear of the mandrel and the mandrel support roller

And because the mandrel support mechanism is fixed on the bracket of the bed, because the height of the mandrel support roller is not adjustable, the mandrel rotating during the rolling process will rub against the surface of the mandrel support roller, and the metal produced after wear If chips enter the tube blank, it will seriously affect the product quality of the next process

Images