An improved tail bending structure for shearing of multiple-length flying shears

Abstract

The present invention discloses a structure for improving the tail bending of a multiple-length flying shear. The structure comprises a horizontally arranged troughing base plate connected by a plurality of troughing rollers. After shearing by the flying shear, the rolled piece enters the troughing base plate from the end thereof for transmission. The end of the troughing base plate is provided with a movable flap connected to the end of the troughing base plate via a flap rotating shaft. The flap rotating shaft adjusts the inclination angle of the end of the troughing base plate. This structure changes the inclination angle of the troughing end to an adjustable structure based on the active state of the rolled piece entering the trough after flying shearing. This ensures that the rolled piece enters the troughing smoothly without bending at the tail, thus solving the problem of tail bending during multiple-length shearing.

Description

Technical Field

[0001] The invention relates to the field of metallurgy, in particular to an improved tail bending structure of a multiple-length flying shear. Background Art

[0002] The continuous rolling production line for small and medium-sized steel bars needs to segment the round steel produced from the entire billet through a double-length flying shear, and then control the upper cooling bed for cooling; when the double-length flying shear is segmenting, the tail of the small-size (≤φ25mm) will impact the bottom plate of the double-length flying shear due to the inertial force of the flying shear, and the bottom plate of the flying shear must be opened in a trumpet shape for guidance, causing the tail of the rolled piece to deform and bend along the trumpet-shaped corner after impacting the bottom plate. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the background technology, the present invention discloses an improved tail bending structure of the multiple-length flying shear to solve the problem of multiple-length segmented tail bending in the production process of small and medium-sized rods, avoid the loss of yield caused by excessive tail bending, unstable production process and other factors.

[0004] Technical solution: The improved tail bending structure of the multiple-size flying shear described in the present invention includes a horizontally arranged trough bottom plate, which is connected by a plurality of trough rollers. After the rolled piece is sheared by the flying shear, it enters the trough bottom plate from the end thereof to realize transmission. A movable flap is provided at the end of the trough bottom plate, and the movable flap is connected to the end of the trough bottom plate through a flap rotating shaft. The inclination angle of the end of the trough bottom plate is adjusted by the flap rotating shaft.

[0005] Furthermore, a flap cylinder is provided below the movable flap, the flap cylinder is fixed on the base of the entire device, and the telescopic end of the flap cylinder is connected to the bottom of the movable flap to drive the movable flap to adjust its angle.

[0006] Furthermore, a hot metal detector is provided at the end of the trough bottom plate to identify the position of the rolled material; the hot metal detector is connected to the flap cylinder to control the operation of the flap cylinder.

[0007] When the workpiece has not reached the flying shear position, the movable flap is in a low position, forming a downward angle, which is convenient for the workpiece to be introduced into the trough. Then the cylinder drives the movable flap back to the horizontal position. When the workpiece is divided into multiple length segments, the tail of the workpiece will still impact the bottom plate of the trough, but at this time because the movable flap of the trough is in a horizontal position, the workpiece will no longer bend or deform after the impact.

[0008] Furthermore, the movable flap is a flat plate structure. When the workpiece has not reached the double-length flying shear, the movable flap is located at a low position, forming a downward inclination; when the head of the workpiece passes through the movable flap, the movable flap is adjusted to a horizontal position.

[0009] Beneficial effect: Compared with the prior art, the advantages of the present invention are: this structure changes the end of the running groove into a structure with adjustable inclination according to the active state of the rolled piece entering the running groove after flying shear shearing, so that the tail of the rolled piece will not bend when it enters the running groove smoothly, solving the problem of bent steel at the tail of double-length shearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0011] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] like Figure 1 The improved tail bending structure of the multiple-size flying shear shown includes a horizontally arranged trough base plate 1, which is connected by a plurality of trough rollers 2. After the rolled piece is sheared by the flying shear, it enters the trough base plate 1 from the end thereof to realize transmission. A movable flap 3 is provided at the end of the trough base plate 1, and the movable flap 3 is connected to the end of the trough base plate 1 through a flap rotating shaft 4. The inclination angle of the end of the trough base plate 1 is adjusted by the flap rotating shaft 4.

[0013] Beneath the movable flap 3 is a flap cylinder 5, secured to the base 6 of the entire device. Its telescopic end connects to the bottom of the movable flap 3, driving the flap 3 for angular adjustment. The movable flap 3 is a flat plate. Before the workpiece reaches the double-length shear, the flap 3 is positioned low, forming a downward angle. Once the workpiece's head passes through the flap 3, it adjusts to a horizontal position. A hot metal detector is located at the end of the trough base 1 to identify the workpiece's position. This hot metal detector is connected to the flap cylinder 5 to control its operation.

[0014] First, the lower bottom plate of the rear trough of the multiple-size flying shear is extended toward the direction of the shear blade to minimize the distance between the shear blade overlap position and the rear trough bottom plate 1; secondly, the rear trough bottom plate 1 of the multiple-size flying shear is divided into two sections. The side away from the shear blade is designed as a fixed bottom plate, and the bottom plate position 20-30 cm close to the shear blade is designed as a movable flap 3, which can be rotated up and down by the flap shaft 4 to change the inclination angle of the movable flap 3; finally, a flap cylinder 5 is added under the movable flap 3 to automatically control the inclination angle of the flap during the production process, so as to realize the switching of the adjustable bottom plate between the low position and the horizontal position. During the production process, the position of the rolled material is detected by a hot metal detector. When the rolled material has not yet reached the double-length flying shear, the movable flap should be in a low position, which is equivalent to serving as a bell mouth to guide the rolled material. When the head of the rolled material passes through the trough and before the double-length segmentation, the movable flap is adjusted to a horizontal position. At this time, the tail of the rolled material impacts the bottom plate after the double-length segmentation shearing. However, since the movable flap is in a horizontal position, the tail of the rolled material will not bend, thereby solving the problem of tail bending during double-length shearing.

Claims

1. An improved tail bending structure for shearing of a multiple-length flying shear, comprising a horizontally arranged troughing bottom plate (1), wherein the troughing bottom plate (1) is connected via a plurality of troughing rollers (2), and after being sheared by the flying shear, the rolled piece enters the troughing bottom plate (1) from the end thereof for transmission, and is characterized in that: The end of the running groove bottom plate (1) is provided with a movable flap (3), and the movable flap (3) is connected to the end of the running groove bottom plate (1) via a flap rotating shaft (4), and the inclination angle of the end of the running groove bottom plate (1) is adjusted via the flap rotating shaft (4); A flap cylinder (5) is provided below the movable flap (3), and the flap cylinder (5) is fixed on the base (6) of the entire device, and its telescopic end is connected to the bottom of the movable flap (3) to drive the movable flap (3) to adjust the angle; A hot metal detector is provided at the end of the trough bottom plate (1) to identify the position of the rolled material; the hot metal detector is connected to the flap cylinder (5) to control the operation of the flap cylinder (5); The movable flap (3) is a flat plate structure. When the rolled piece has not reached the double-length flying shear, the movable flap (3) is located at a low position, forming a downward inclination. When the head of the rolled piece passes through the movable flap (3), the movable flap (3) is adjusted to a horizontal position.

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