CN110038933B

CN110038933B - Pre-plate rolling machine for eliminating residual straight edges of plate for pipe rolling

Info

Publication number: CN110038933B
Application number: CN201910384144.4A
Authority: CN
Inventors: 郝建军; 王秦未; 宋耀辉; 李玉贵; 王效岗; 康庚; 刘小亭
Original assignee: Taiyuan University of Science and Technology
Current assignee: Taiyuan University of Science and Technology
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2021-07-06
Anticipated expiration: 2039-05-09
Also published as: CN110038933A

Abstract

A pre-plate rolling machine for eliminating residual straight edges of plate materials for rolling pipes belongs to the technical field of plate material rolling. It is characterized by comprising an upper roll shaft, a lower roll shaft, an upper left curling roll, a lower right curling roll, a screw-down device, an upper bearing seat, a motor and a frame consisting of an upper cross beam and a left vertical frame and a right vertical frame. The connection relation is as follows: the upper end of the screwdown is fixedly connected below the upper cross beam, the lower end of the screwdown is connected with the upper bearing seat, the upper roll shaft is arranged in the upper bearing seat, the upper left and right crimping rollers are respectively arranged at the left and right sections of the upper roll shaft and can be axially adjusted, the lower roll shaft is arranged in the left and right lower bearing seats at the lower position of the left and right vertical frames, the right end of the lower roll shaft is connected with a motor, and the lower left and right crimping rollers are respectively arranged at the left and right sections of the lower roll shaft and can be axially adjusted; the roller surfaces of the upper left curling roller, the upper right curling roller, the lower left curling roller and the lower right curling roller are all arc surfaces. The advantages are that: the problem of the left and right remaining straight edges of the plate for the reel pipe in the prior art is effectively solved, and the quality and the production efficiency of the welded pipe are improved.

Description

Pre-plate rolling machine for eliminating residual straight edges of plate for pipe rolling

Technical Field

The invention belongs to the technical field of plate curling, and particularly relates to a pre-plate rolling machine for eliminating residual straight edges of plates for pipe rolling.

Background

With the development of traffic and urban construction in China, the demand for processing metal plates into various curved surface workpieces such as various hollow cylinders and cylindrical shapes is continuously increased, and the requirement for the curved surface curling shape is higher and higher. At present, the types of plate rolling machines on the market are various, most of the plate rolling machines cannot be effectively contacted with a roll shaft when the left and right sides of the plate are respectively provided with a section of length to be rolled due to the structure of the plate rolling machine, and residual straight edges (shown in figure 3) are generated, so that great circumferential force is generated at the butt joint of a welding cylinder, a welded workpiece generates edges and corners at the welding joint, and the quality of a pipe barrel is influenced. In the past, the problem of the residual straight edge is often formed by multiple times of bending by using a universal die on a press machine or directly cutting off the residual straight edge. The methods have low working efficiency, generate great waste on the plates, have poor quality of grooves generated after straight edges are cut off, and are not beneficial to welding.

Disclosure of Invention

The invention aims to provide a pre-rolling machine for eliminating the residual straight edge of a plate material for rolling a pipe, which can effectively overcome the defects in the prior art.

The invention is realized by the following steps: as shown in fig. 1, the device is characterized by comprising upper and

lower roll shafts

3, 6, upper left and right curling rolls 4, 4 ', lower left and right curling rolls 7, 7', a screw-down device 2, an upper bearing seat 5, a motor 8 and a frame consisting of an upper cross beam 1 and left and right stands 1 ', 1'. The connection relation is as follows: the upper end of the screw-down device 2 is fixedly connected below the upper cross beam 1, the lower end of the screw-down device is connected with an upper bearing seat 5, an upper roll shaft 3 is arranged in the upper bearing seat 5, upper left and right curling rollers 4 and 4 ' are respectively arranged at the left and right sections of the upper roll shaft 3 and can be axially adjusted, a lower roll shaft 6 is arranged in left and right lower bearing seats 9 and 9 ' at the lower positions of left and right vertical frames 1 ' and 1 ' ″, the right end of the lower roll shaft is connected with a motor 8, and lower left and right curling rollers 7 and 7 ' are respectively arranged at the left and right sections of the lower roll shaft 6 and can be axially adjusted; the roll surfaces of the upper left curling roll 4, the upper right curling roll 4 ', the lower left curling roll 7, the lower right curling roll 7 ' and the roll surfaces of the lower left curling roll 7, the lower right curling roll 7 ' are all arc surfaces which are convex outwards.

Advantages and positive effects of the invention

1. The invention effectively solves the problem of left and right residual straight edges of the plate material for the reel pipe in the prior art, and improves the quality and the production efficiency of the welded pipe.

2. The invention has simple and feasible structure.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a production project;

FIG. 3 is a schematic view of the remaining straight edge;

in the figure: 1-upper beam; 1 ', 1' -left and right stands; 2, pressing down the device; 3. 6, an upper roll shaft and a lower roll shaft; 4. 4' -upper left and right crimping rollers; 5, mounting a bearing block; 7. 7' -lower left and right crimping rollers; 8, a motor; 9. 9' -lower left and right bearing seats; 10. 10' -front and rear drive roller ways; 11. 11' -rolling the plate before and after rolling; h-remaining straight side.

Detailed description of the preferred embodiments

The working process of the invention is as follows:

as shown in fig. 1 and 2, the axial positions of the upper and lower crimping rollers 4, 4 'and 7, 7' are adjusted according to the width of the plate, the pressing amount is adjusted by the lower device 2, the starting motor 8 operates to drive the lower roller shaft 6 and the lower left and right crimping rollers 7, 7 'to rotate, and the straight plate strips 11 on the left and right sides are conveyed to the pre-rolling machine by the conveying roller bed 10 to be rolled, so that the designed circular arc 11' on the left and right sides is achieved, and the residual straight edge H is eliminated.

Claims

1. A pre-plate rolling machine for eliminating the residual straight edges of plate materials for rolling pipes is characterized by comprising upper and lower roll shafts (3, 6), upper left and right curling rolls (4, 4 '), lower left and right curling rolls (7, 7'), a screw-down device (2), an upper bearing seat (5), a motor (8) and a frame consisting of an upper crossbeam (1) and left and right vertical frames (1 ', 1'); the connection relation is as follows: the upper end of the screw-down device (2) is fixedly connected below the upper cross beam (1), the lower end of the screw-down device is connected with an upper bearing seat (5), an upper roll shaft (3) is arranged in the upper bearing seat (5), upper left and right crimping rollers (4, 4 ') are respectively arranged at the left and right sections of the upper roll shaft (3) and can be axially adjusted, a lower roll shaft (6) is arranged in left and right lower bearing seats (9, 9 ') at the lower positions of left and right vertical frames (1 ' and 1 '), the right end of the lower roll shaft is connected with a motor (8), and lower left and right crimping rollers (7, 7 ') are respectively arranged at the left and right sections of the lower roll shaft (6) and can be axially adjusted; the roller surfaces of the upper left and right curling rollers (4, 4 ') and the lower left and right curling rollers (7, 7') are arc surfaces which are convex outwards, and different arc shapes designed on the remaining straight edges at the two ends of the plate can be achieved by adjusting different positions of the upper and lower curling rollers through the structure, so that the requirement of pipe coiling with various diameters is met.