JPS6116014Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a cutting burr removal device for round steel, and more specifically, for example, a round steel that is continuously formed from a continuous casting machine is cut into a predetermined length. The present invention also relates to a device for removing cutting burrs that occur when cutting.

BACKGROUND OF THE INVENTION A round steel piece that is continuously formed by a continuous casting device or the like is cut into a predetermined length by a gas cutting machine or the like. At this time, the cutting operation of the gas cutter is performed from the top to the bottom of the round steel, so cutting burrs are generated over a predetermined range below the cut end surface of the round steel. If these cutting burrs are not removed, they will be crushed and adhered to the surface of the round steel during the subsequent rolling process, which will not only significantly reduce the quality of the product but also damage the work rolls and the like.

The present invention has been made to solve the above-mentioned inconveniences, and is a cutting burr removal device for round steel configured to be able to reliably remove cutting burrs from round steel even if the diameter of the round steel differs. is intended to provide.

In order to achieve the above object, in this invention, a cutter having a chain structure is provided on a horizontally movable movable plate so as to be able to rise and fall freely, and a drive means is driven to move the cutter having a chain structure to a round steel plate. A structure was adopted in which the cutting burr is removed by applying shearing force to the cutting burr by pressing along the outer peripheral surface from the bottom to the top near the cut end surface and moving the cutter along with the movable plate in the axial direction of the round steel.

To this end, in the present invention, the ends of a plurality of links are arranged, each with its longitudinal direction intersecting the axis of the round steel whose burr is to be removed, and whose upper edge in the longitudinal direction is provided with a blade. , the chain-structure cutters are rotatably connected to each other by pins provided parallel to the axial direction of the round steel, and at the burr removal position of the round steel, the chain-structure cutters are connected to the circumferential surface of the round steel. A pressing member to be pressed against is rotatably connected and attached to links located at both ends of the plurality of links, and an integral member consisting of the chain cutter and the pressing member is attached in a circular shape. It was provided to be movable relative to the steel in the axial direction of the round steel.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

1 and 2 are for explaining one embodiment of the present invention. In the figures, the symbol 1 is a round steel from which cutting burrs are removed. In the case of this embodiment, the round steel 1
is sent to the burr removal position from the axial direction of the round steel or a direction perpendicular to the axial direction by a conveying means such as a roller conveyor C or a chain conveyor.
A cutting burr 1a is formed below the cut end surface of the round steel 1 over a predetermined angle θ. This angle θ is usually about 120°. Also, when the diameter of the round steel 1 is approximately 200 mm, the height of the burr 1a is approximately 5 to 10 mm.
The width is 20-30mm. This round steel 1 automatically stops when it reaches the cutting burr removal position, and is clamped at the top and bottom by clamps 2 driven by hydraulic cylinders (not shown), so that it is fixed so that it will not move even if a large external force is applied. be done.

A cutting burr removal device 3 is disposed opposite the round steel 1 at a cutting burr removal position. The cutting burr removing device 3 has a flat movable platen 4, and this movable platen 4
Cylinders 5 to 7, which are shown above as an example of the driving means and which form a pressing member for pressing a chain-structured cutter 8, which will be described later, against the circumferential surface of the round steel 1, are mounted facing upward. There is. The central cylinder 5 may be fixed to the base, but the cylinders 6 and 7 on both sides are clevis-shaped. These cylinders 5~
A cutter 8 having a chain structure is arranged above the cutter 7 . This cutter 8 consists of a plurality of links such as 8a to 8e whose longitudinal directions are arranged in a direction intersecting the axis of the round steel 1, and each link 8a to 8e is a pin provided parallel to the axial direction of the round steel 1. The links 8f are sequentially connected to each other so as to be rotatable, and the upper edge of the entire longitudinal direction of each link 8a to 8e serves as a blade section that applies shearing force to the cutting burr 1a. Each of the links 8a to 8c may be made entirely of cutter steel, or the main bodies of the links 8a to 8e may be made of ordinary steel and a blade may be attached to the upper edge of each, or the cutter steel may be overlaid on the main body of the links 8a to 8e. You can also finish the part into a blade.

In this embodiment, the links 8a, 8 on both ends
e connects cylinders 6 and 7 via brackets, respectively.
The central link 8c is connected to the tip of the piston rod of the cylinder 5 via a bracket.

The portions of the links 8a to 8e of the chain-structured cutter that contact the round steel 1 have a slight arc shape or a straight line, and each link 8a to 8e is housed in a slidable state in guides 9 on both sides. ing. The piston rods of the cylinders 5 to 7 are provided within the guide 9 so as to be movable up and down, and the guide 9 is attached to the movable platen 4. For example, when the diameter of the round steel 1 is approximately 200 mm, if the pitch of each link 8a to 8e is set to 40 to 50 mm, even if the diameter of the round steel 1 increases or decreases by several tens of mm, each link 8a to 8e will be made of round steel. It roughly contacts the circumferential surface of No. 1, and deburring can be performed satisfactorily.

On the other hand, as shown in FIG. It is provided so as to be slidable in the axial direction of the round steel 1. 12
is a guide.

Next, the operation of this embodiment configured as above will be explained.

When the round bar 1 is sent to the cutting burr removal position by a conveyance means such as a roller conveyor C with its cutting burr 1a facing downward, it is detected by a detection means (not shown) and removed by the conveyance means. stops, and the round bar 1 stops at a predetermined position. In this state, the clamp 2 presses the round steel 1 from above and fixes it in that position. At this time, the chain-structured cutter 8 of the cutting burr removal device 3 is in a state lowered from the lower surface of the round steel 1, and at a position away from the burr 1a position on the end face of the round steel 1 in an inward direction. When it is detected that the round steel 1 is fixed, the cylinders 5 to 7 are activated, and each link 8a to 8e is attached to the round steel 1 along the circumferential surface of the round steel 1 below the round steel 1. The lower half of the outer peripheral surface of the round steel 1 is surrounded by the links 8a to 8e. This state is shown in FIGS. 1 and 2.

In this way, the cutter 8 of the chain structure is connected to the round steel 1.
When the cylinder 11 is pressed against the outer circumferential surface of
Move it to the left in the figure. The cutter 8 then cuts and removes the burr 1a while applying a large shearing force to the cutting burr 1a.

When the removal of burrs is completed, the clamp 2 is separated from the round steel 1, and the round steel 1 is selected for the next process by the conveyance means. The chain-shaped cutter 8 that has cut off the burrs descends again and moves to the right in FIG. 2 to prepare for the next burr removal operation.

Note that when cutting and removing the burr 1a, a large force is also applied to the links 8a to 8e that make up the cutter, but since these links are housed within the guide 9, their horizontal displacement is regulated and positional shift is prevented. It will never occur.

In the above embodiment, the movable platen 4 provided with the cutter was configured to move along the axial direction of the round steel 1, but in this case, the cutter was fixed while being pressed against the round steel. , deburring may be performed by moving the round steel in the axial direction.

In the case of the illustrated example, the number of links 8a to 8e constituting the chain cutter is five, but the larger the number, the more completely the links will come into close contact with the circumferential surface of the round steel 1. When the number of links is small, the degree of closeness can be improved by making the edge of each link that contacts the circumferential surface of the round steel 1 slightly curved. In order to raise and lower the cutter 8 having a link structure, the central cylinder 5 is not necessarily necessary, and the purpose can be achieved using only the left and right cylinders 6 and 7.

As is clear from the above explanation, in the present invention, a cutter having a chain structure that is pressed against the round steel from the lower side to the side, which is fixed at the cutting burr removal position, is aligned with the axis of the round steel. Since it is configured to be able to move outward in the direction, cutting burrs generated on the cut end surface of the round steel can be reliably and easily removed. Of course, even if the diameter of the round steel changes somewhat, deburring can be done satisfactorily by the action of the chain cutter.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a front view and FIG. 2 is a sectional view taken along the line -- in FIG. 1. 1...Round steel, 2...Clamp, 3...Burr cutting device, 4...Movable plate, 5-7, 11...Cylinder, 8...Chain structure cutter, 8a-8e...
Link, 9...Guide.

Claims (1)

[Scope of utility model registration request] The ends of a plurality of links whose longitudinal directions are arranged in a direction intersecting the axis of the round steel whose burr is to be removed, and whose upper edges in the longitudinal direction are formed with blades,
A cutlet with a chain structure is formed by rotatably connecting each other with pins provided parallel to the axial direction of the round steel, and at the deburring position of the round steel, the cutter with the chain structure is attached to the circumferential surface of the round steel. The pressing member to be pressed,
The plurality of links are rotatably connected and attached to the links located at both ends, and the integral member consisting of the chain-structured cutter and the pressing member is attached to the round steel. A cutting burr removal device for round steel that is relatively movable in the axial direction.