JPS59110512A - Rotary shear device - Google Patents

Abstract

PURPOSE:To remove the scrap sandwiched between cutters, by making full use of motion in time of the descent of a device bearing the above caption after strip shearing, and forcibly driving a rotary cutter into rotation. CONSTITUTION:With motion in time of the descent of a shear frame 13, rubber rollers 17 and 17' come into contact with each of contactors 19 and 19' for rotation. With this rotation, a lower cutter 12 is forcibly driven into rotation in an arrow direction (a) whereby a scrap S being nipped by the lower cutter 12 is separated from a shear device. Therefore, a power mechanism that has so far removed the scrap in a way of rotating a lower rotary cutter after shearing is well simplified and the device cen be miniaturized.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shearing device for a welding machine for strip connection, and more particularly to a rotary shear type shearing device, and in particular, (i) a device for scrubbing and polishing the welds after shearing the welds; It is designed so that it can be easily transported.

When the ends of both the leading and trailing strips are sheared with a rotary shear, the cut scraps are firmly stuck between the two blades of the lower rotary blade and cannot be easily removed.

Conventionally, the lower rotary blade was rotated at the end of shearing to remove the scrap caught between the lower blades.

However, in the conventional case, most of them are rotated using electric motors or air motors, so the entire shear device tends to have a large structure and become complicated due to the attached devices such as electric motors and power transmission @Nara. there were.

The present invention solves the above-mentioned drawbacks, and when the rotary shear device is later lowered from the clamp line, the motion of the lowering is utilized to drive the rotary blade in a 51-degree rotation. To provide a rotary rotary shear device that removes fixed scrap from a blade and a cylinder of the blade by rotating the blade.

Embodiments of the rotary shear device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram of a matshu seam welding machine used for strip connections in pickling lines, annealing lines, etc. in steel plants.

ill is a metal strip, (2) is a moving clamp, (8
) is a fixed clamp, (4) is a moving table of a welding machine commonly called a C frame, and rollers (6...
), etc., and move forward and backward using cylinders (7), etc. from the direction across the travel line. (8) is the upper shim electrode, (8) Subsidence - Wax y, --5%, Yi! E)-1 These seam electrodes (8) (mounts) are supported by the moving table (4), and the upper seam electrode (8) is supported by a cylinder (9) mounted on the upper arm of the moving table (4). It moves up and down. (10) is the rotating rotary shear #j, the neck;
As will be described later, it is installed at the tip of the lower arm of the moving table (4) so as to be movable in the vertical direction.

FIG. 2, FIG. 8, and FIG. 4 specifically show the structure of the rotary shear device. The shear device it (to) b', s of the present invention is a rotary shear type upper rotary blade of each two blades, that is, an upper blade (11)
and a lower rotary blade, that is, a lower blade (12), and the upper blade (11) and the lower blade (12) are opposed to each other and are mounted on a shear frame (
18). Shar frame (18
) is supported by the guide groove (15) of the slide base (14) fixed at the tip of the lower arm of the moving table (4), and is connected to the lifting cylinder (9) fixed to the moving table side.
) in the vertical direction. That is, when preparing the shear device (10) for strip shearing, the shear frame (18)? The shear frame (18) will be raised to position the center of the shear on the clamp line (C-C), and after the strip shearing is completed, the shear frame (18) will be lowered and both the upper and lower blades will retreat from the clamp line. Rubber rollers (17) (17') are attached to both sides 1 of the (b) rotation axis of the lower blade (12), and the shear frame (13) touches them and forcibly drives the rotation. It is supposed to be done.

Note that the shredded scrap (S) is carried out from the discharge port (20) of the shear frame.

Next, the operation will be explained.

Now, the rotary shear device # (10) shown in FIG.
By returning to point A) and retracting the movable table (4) from there, the shear device (lO) is swIed in the width direction of the sheet to start strip shearing.

A series of strip welding operations will be described below.

Yes, rotary shear equipment! (The first one is the shear frame (
18) is raised and waiting at the original position (A-Aχ.Then, the leading strip (1) and the trailing strip (
When a) is fed onto the line, the ends of both strips are clamped and held by a fixed clamp (8) and a movable clamp (2), respectively.

Next, when the moving table (4) starts moving the carp in the board width direction by the cylinder (7), the strip is sheared by the upper blade (11) and the lower blade (12). This strip shearing is performed from one side along the cutting line.

The cut scrap (S) is the shear frame (18)
The scrap is discharged from the scrap outlet (20). When this scrap +8) is cut off from the end of the strip,
The lower blade (12) may become firmly stuck between the blades and cannot be separated from each other, but the rubber rollers (17) (17) will break away from the contact piece (19) during the next movement when the shear frame (1B) descends.
It rotates in contact with X19,5, thereby lower blade (12
) is forcibly rotated in the direction of arrow (A) to remove the scrap caught in the lower blade (12) from the shear device.

Thus, once the strip has been sheared, the movable clamp (2) is then advanced so that the cuts of both the leading and trailing strips overlap slightly over the entire width of the board. Then, the movable table (4) moves forward and welding starts while crushing the overlapping portion with the upper and lower seam electrodes (8) (8). When the welding is completed, the circular clamp (21% +81
is opened and the strip is passed through.

Then, the re-shearing device (10) is connected to the clan 7 line (e
-C) Rise at 1 and prepare for the next operation.

In this embodiment, a matsushi seam welding machine is taken as an example, but the essence of the present invention is not limited to this, and the invention can be applied to various types of machines based on the technical idea described in the claims. can be applied.

As described above, according to the present invention, (1) the rotary shear of the shearing device for IJ joint welding can be rotated at any angle by the motion when lowering it from the crank line after strip shearing, so it is possible to There is no need to worry about rotating it with an electric power source, etc., and design #4 construction becomes simple and can be manufactured at low cost.

[Brief explanation of drawings]

Fig. wJ1 is a schematic diagram showing an example of the rotary shear device according to the present invention used in a welding machine for strip connection, Fig. 2 is a front view showing the main parts of the device of the present invention, and Fig. 8 is Fig. 2 Fig. 4 is a view taken along the line IV-IV in Fig. 2; [Explanation of symbols] (1) (f)...Strip (lO)...Rotary shear device (n), (12)...Rotary blade

Claims (1)

[Claims] In a rotary shear device that holds a leading strip and seven trailing strips by a crank, and shears both strip ends S held by the crank prior to welding,
A rotation characterized in that the cut scrap is separated from the rotary blade by rotating the rotary blade of the shearing device using the motion when lowering the blade from the clamp line after shearing the strip, and it takes 5K. type rotary shear device.