JP2573470Y2 - Grating shearing machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shearing machine having a movable blade and a fixed blade, and more particularly to a shearing machine for cutting a part of a grating bar.

[0002]

2. Description of the Related Art Grating is a rectangular cross-section girder (hereinafter referred to as "twist bar") on the upper edge of a plurality of longitudinal strips (hereinafter referred to as "bearing bars") having an I-shaped cross section.
Is welded to form a lattice shape, cut into a desired length, and a cut edge is welded to the cut end to be used for a floor material for draining, a lid plate for a gutter, and the like.

When the grating is used as a cover plate for the side groove, as shown in FIG. 7, a part of the bearing bar 2a and a part of the twist bar 6a are cut at a corner portion of the cover plate, and a small edge is attached to the tip of the cut bearing bar 2a. A rectangular window 24 is formed by welding the end face plate 23 parallel to the plate 22 and a mounting plate 26 having a through hole 25 is welded to the window.

As shown in FIG. 8, the lid plate 21 manufactured in this manner is placed on the opening step 28 of the side groove block 27, and is bolted to the side groove block 27 by bolts 29 inserted through the through holes 25. It is fastened.

[0005]

In order to cut off some of the bars 2a and 6a inside the grating, a metal circular saw conventionally used for cutting the grating cannot sufficiently cope. Cutting with a band saw is inefficient. In the fusing, the accuracy of the cut surface is poor and the end face plate 23
Accurate welding becomes difficult.

An object of the present invention is to provide a shearing machine capable of easily and efficiently cutting a bar material inside a grating.

[0007]

The grating shearing machine according to the present invention comprises a bearing bar 2b located on both sides of a bearing bar 2a to be cut.
The movable blade 1 includes a movable blade 1 having a width narrower by a play and a fixed blade 3 positioned opposite to the movable blade 1. The fixed blade 3 includes a bearing bar 2a to be cut and bearing bars 2 on both sides thereof.
and two guide blocks 4, 4 sandwiching a bearing bar 2a to be cut inserted between the guide blocks 4, 4a.
The movable blade 1 is movably guided by a guide column 15 having a U-shaped cross section extending from a base 12 supporting the fixed blade 3 through a gap between the bearing bars 2.

When the twist bar 6a is connected to the cut-out bearing bar 2a, the movable blade 1 is separated by the play distance from the mutual distance m between the bearing bars 2b, 2b located on both sides of the bearing bar 2a to be cut. The twist bar 6 is provided on both side plates 14 of the guide column 15.
The movable blade 1 is provided with notches 17 and side blades 5 and 5 extending in the orthogonal direction are provided at both ends of the movable blade 1, and the twist bar 6a is cut by the side blades together with the bearing bar 2a.

[0009]

In order to cut the bearing bar inside the grating with the shearing machine of the present invention, the bearing bar 2a to be cut is inserted between the two guide blocks 4, and the movable blade 1 is pushed. Then, the movable blade 1 and the fixed blade 3 cut the bearing bar 2a while applying a shearing force.

In this case, when the twist bar 6a is connected to the cut portion of the bearing bar 2a to be cut, it must be cut at the same time. Therefore, the width of the movable bar 1 is made smaller than the mutual distance m between the bearing bars 2b and 2b sandwiching the bearing bar 2a by which the movable blade 1 is cut. When the movable blade 1 is operated while the movable blade 1 is inserted into the notch 17 of the side plate 14 of the guide column 15, when the movable bar 1 cuts the bearing bar 2 a, the twist bar 6 a is simultaneously moved by the side blades 5, 5. Disconnect.

[0011]

FIG. 1 is a diagram showing a basic configuration of a shearing machine according to the present invention. The upper blade 1 of the shearing machine of the present invention is formed to be slightly narrower than the mutual distance m between the bearing bars 2b and 2b located on both sides of the bearing bar 2a to be cut. 1 is provided at a position below the clearance 1 with a clearance therebetween. Two guide blocks 4, 4 narrower than the distance n between the adjacent bearing bars 2a, 2b are erected on the lower blade 3, and the distance between the guide blocks is slightly larger than the thickness of the bearing bar d. . On both sides of the upper blade 1, there are provided side blades 5, 5 which are orthogonal to the upper blade 1, and these side blades cut a twist bar 6a provided on a bearing bar 2a to be cut.

A more detailed embodiment of the shearing machine of the present invention will be described with reference to FIGS. The upper blade 1 fixed to the holder 7 is vertically divided into two parts, and an arc-shaped cutting blade 9 is provided at the lower end of the joint 8. Behind the cutting blade 9, an empty space 10 for accommodating the cut bearing bar 2a and the like is formed. The lower blade 3 is fixed to a base 12 having an opening 11 for discharging a cut piece at the center. Four guide blocks 4 are provided upright on the lower blade 3, and the thickness and the interval between the guide blocks are the same.
A bearing bar 2a to be cut is inserted between the two center guide blocks 4, 4 (see FIG. 6).

The base 12 is provided with an upright U-shaped column 15 composed of a back plate 13 and side plates 14 connected to both sides thereof, and the lower blade 3 is disposed below a front opening of the column. The upper part of the front opening is connected by a front plate 16. A horizontal notch 17 extending from the front opening portion is provided at the center of each of the side plates 14, 14 at the center of the column. A stopper 18 for regulating the position is provided. Back plate 1
3, independent slide plates 19b, 19s and 19f are respectively attached to the inner side surfaces of the both side plates 14 and the front plate 16, and the slide plate 19b of the rear plate 13 is
Slide plate 19s of the side plate 14 and the front plate 16,
It is longer than 19f.

Upper blade 1 and holder 7 for fixing the upper blade
Is mounted slidably in the vertical direction by four slide plates 19b, 19s and 19f, and is connected to a piston of a hydraulic press (not shown) by a shank 20 provided at an upper end. The holder 7 and the upper blade 1 move up and down in the column 15 with the pressurizing operation of the piston.

When manufacturing the cover plate 21, first, the grating is cut into a predetermined length. Next, the bare link bar 2a to be cut is placed in front of the shearing machine of the present invention (FIG. 3).
(Rightward direction), between the guide blocks 4, 4, and fixed at a position where the tip thereof abuts against the stopper 18. At this time, the twist bar 6a mounted on the bearing bar 2a is inserted into the notch 17 of the column 15 and does not interfere. Next, when the upper blade 1 is moved downward, the bearing bar 2a
Is cut while having a shear angle at the x portion shown in FIG. By cutting the cutting blade 9 with a shear angle, the shearing area can be reduced and the shearing load can be greatly reduced. The twist bar 6a is cut by the side blades 5, 5 at the y portion. The cut bearing bar and the like are discharged to the outside through the opening 11 of the base.

[0016]

As described above, according to the present invention, it is possible to provide a dedicated machine for cutting some bars of grating. In addition, since this dedicated machine employs shearing, a part of the bearing bar inside the grating can be easily and quickly cut. Further, even if the twist bar is mounted on the bearing bar to be cut off, both can be cut at the same time by providing the upper blade with the side blade.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a basic configuration of a shearing machine of the present invention.

FIG. 2 is a front view of the shearing machine of the present invention with the front plate removed.

FIG. 3 is a central longitudinal sectional view of the shearing machine of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is a partial plan view of the grating fixed to the lower blade.

FIG. 7 is a partial plan view of a gutter cover plate.

FIG. 8 is a cross-sectional view showing a cover plate attached to a gutter block;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper blade (movable blade) 2 Bearing bar 3 Lower blade (fixed blade) 4 Guide block 5 Side blade 6 Twist bar

Claims (2)

(57) [Scope of request for utility model registration] 1. A movable blade (1) having a width smaller than a mutual distance (m) between bearing bars (2b) and (2b) on both sides of a bearing bar (2a) to be cut, and a fixed blade disposed at a position facing the movable blade (1). Blade (3)
The fixed blade (3) has bearing bars (2a) on both sides so as to sandwich the bearing bar (2a) to be cut.
b) and guide blocks (4) and (4) inserted between them.The movable blade (1) moves from the base (12) supporting the fixed blade (3) to the bearing bar (2) Is a grating shearing machine movably guided by a U-shaped guide column (15) extending through the gap. 2. The side plates (14) of the guide column (15) are provided with cuts (17) for inserting a twist bar (6),
Side blades (5), (5) in the orthogonal direction are provided on both sides of the movable blade (1), and the twist bar (6a) connected to the bearing bar (2a) cut by the movable blade (1) with the side blade is provided. 3. The grating shearing machine according to claim 1, wherein the shearing is performed simultaneously.