JPH07314240A - Cutting tool for clasp bendable part of metal plate - Google Patents

Abstract

PURPOSE:To provide a cutting tool for a metal plate clasp bendable part which can cutting-separate a part or the whole of a clasp through the cutting at the bendable part of the clasp of the metal plate which is claspingly worked. CONSTITUTION:At the top end of a supporting rod 1 having a holding rod 2 at the rear part, a grooved roller 3 is formed, and under the lower edge, a cutter plate 5 having a cutting edge 51 is formed integrally at the cutter root 52.

Description

Detailed Description of the Invention

[0001]

An object of the present invention is to cut a goby of a goby-processed metal plate, mainly a metal plate for construction, especially a metal plate for roofing among them, at its bent portion to separate part or all of the goby. It is an object of the present invention to provide a metal plate goby bending portion cutting tool having a novel structure that enables the above.

[0002]

2. Description of the Related Art For a metal plate for construction, particularly a metal plate for roofing a roof, in order to prevent water leakage from a metal plate having a folded portion for a small goby or a flat goby, or a goby winding portion. Which have been specially improved, for example, the folding part, which is found in Japanese Utility Model Publication No. 54-1325 and Japanese Utility Model Publication No. 56-76235, is multi-folded or multi-folded, and the edge of the folding part is also special. Many proposals and commercializations of various shapes such as a bent piece for draining of various shapes and a metal plate for roofing with a ridge, etc., which mainly has a shape and structure of the folded portion that has been goby processed Has been done.

Most metal plates used for construction, including those for roofing with these improved folds,
Be sure to drain any of the edges of the metal plate body of the specified width,
Alternatively, it has a goby portion for connection, is bent to either the front or back surface side of the metal plate body, and has a structure in which the protruding side of the bent portion becomes a ridge. When this general metal plate for construction is brought to the site and applied as a roofing material, outer wall finishing material, or other covering material for each part, it is not enough to connect only the width dimension that has been preprocessed. It will be necessary to prepare something that is odd in size so that it will fit in, and it will be forced to process the odd pieces on site.

Until now, the processing of this semi-finished product was
It was done by a sheet metal craftsman with his own technique, making full use of so-called sword scissors prepared only for cutting a flat metal plate. This traditional method does not cause any problems as long as it is a work that simply separates flat surfaces, but like a roofing roof plate, a bent portion with a goby on the edge is used. Yes, if you need to separate the metal plate along the line of the ridge from the metal plate body with the bent piece folded at the ridge, use a unique shape with slightly curved sides. In the previous Sakiyama scissors, since the scissors do not enter the bent part, once raise the bent piece of the metal plate having the goby bent part to expand the bent part, and then perform the cutting process along the ridge. I had to do it.

However, the effort to expand the bent portion is
This is not only a troublesome work itself, but the bent part that has been firmly bent by machining does not expand at the ridge when expanding, but from a flat part in the vicinity and straight However, since it tends to extend in an irregular state, it requires a post-treatment to flatten the irregularly deformed part after cutting along the edge, which further complicates the work. As a result, the work efficiency is deteriorated. Therefore, in the present invention, in view of the above situation, especially the metal plate of the goby, the cutting process along the edge of the goby portion, without the need to expand the processing as before, at all, As a result of continuing the earnest development and research, we succeeded in completing and commercializing a metal plate goby bending part cutting tool with the structure as detailed below. It was done.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As will be clearly understood from the embodiments representative of the present invention shown in the drawings, the present invention is basically
A tool for cutting a bent portion of a metal plate in which a grooved roller is formed at the tip of a supporting rod having a gripping rod on the rear side, and a blade plate with a cutting edge is integrated below the lower end edge of the supporting rod at its blade base. . Furthermore, in other words, of the supporting rod having the gripping rod at the rear,
A grooved roller is formed at the tip, and the grooved roller is used as a fulcrum of the lever below the lower end edge, and the bent cross section has a substantially U-shaped, V-shaped, L-shaped, L-shaped or F-shaped ridge. Of the metal plate main body formed in the bent portion having the above-mentioned bent portion, which is brought into contact with the back surface of the metal plate inside the bent portion, is rotated about the fulcrum in a direction in which the bent portion of the metal plate is broken from the inside to the outside. Accordingly, the gist of the configuration is a metal plate gob bending part cutting tool in which a blade plate with a blade tip is regulated to an arrangement that can act as a point of action and is integrated at the blade base.

First, the supporting rod is a gripping rod having a shape and structure convenient for an operator to handle at the base side thereof, for example, a metal pipe made of a metal pipe having an appropriate thickness as in the embodiment described later, and other steel pipes. Made of plastic as a core material, made of wood, etc., straight or curved for convenient reciprocating movement during cutting operation, or deformed ring like a handle of a facing etc. The gripping rod made of is integrally formed.

At the tip of the supporting rod, a grooved roller fitted so as to straddle the ridge of the bent portion of the metal plate, which is grooved, is attached, and the grooved roller is fitted. Cutting with the bending point of the point to be used as the fulcrum, and when the gripping rod side in the hand is rotated in a direction away from the ridge, the cutting edge of the blade plate with a cutting edge, which will be described later, integrated midway downward is added as the point of action. A structure that does not easily deform due to external force due to resistance,
It is made of a wide steel plate that requires strength, is easy to exert lever action, and does not hinder handling, for example, 20 to 50 cm, preferably about 30 cm, made of a wide steel plate, and has a front shape. Like the straight line type or the example described later, the tip is curved in a beak bird's beak shape so that the force applied from the grooved roller contact point which is the fulcrum to the ridge of the bent portion is as vertical as possible It is formed into a shaped shape.

The blade plate with a blade has a structure in which its root is firmly integrated in the middle of the supporting rod and a blade is attached to the supporting rod side.
Formed in a thickness that can be inserted inside the gouged bent part of the metal plate, operating the gripping rod away from the ridge and moving with the rotation of the supporting rod with the grooved roller as the fulcrum Then, the blade edge facing the supporting rod side has a function of biting from the inside of the goby bent portion of the end of the metal plate and being pushed outward to cut the bent portion. In order to make the process of cutting from this bite go smoothly, the front shape of the cutting edge should be hung on the root side like the one in the illustrated embodiment, rather than being linear, and the supporting direction. It is more convenient to form it in a slightly curved shape. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments representative of the present invention shown in the drawings will be described to help understand the basic configuration of the present invention.

As shown in the overall perspective view of FIG. 1 and the perspective view of the usage state of FIG. 2, the metal plate goby bending portion cutting tool of this embodiment has a collar piece 4 at the front end of a grip rod 2 having a predetermined length. Through,
The supporting rod 1 having the grooved roller 3 at the tip is integrated. The brim piece 4 is separated from the bent portion P2 when being torn.
The bent piece P3, which is located further ahead, has a function of extending straight to the hand of the operator who holds the gripping rod 2 so as to prevent injury, and also when reciprocating with the grooved roller 3 as a fulcrum. , The lower side of the flange 4 is bent so that the cutting edge on the side of the metal plate body P1 does not come into contact with the hand, and the front end is formed into a substantially V shape, and the lower end thereof is notched so that the cutting edge can be easily received. It is formed in the structure of the receiving portion 41.

On the other hand, the blade plate 5 has a substantially U-shaped bent cross section,
The bent portion P2 of the metal plate body P1 formed in the bent portion P2 having a ridge shape, a square-shape, an L-shape, or a f-shape.
With a plate thickness that can be inserted inside, the cutting edge 51 has a metal plate body P1.
The cutting edge portion 51 is formed so as to face the inside of the bent portion P2 of the curved portion P2 and is gently curved toward the blade edge side toward the blade edge 52.
a and the cutting edge part 51a, which is continuous with the cutting edge part 51a and extends up to the cutting edge 53 in a substantially straight line or a curve close thereto
b is a tall one, and the blade plate 1 has a cutting blade tip portion 51b of the blade plate blade edge 51 arranged in parallel with the support rod 1 at a predetermined interval or in a slightly open space. The blade edge 52 is integrated with the supporting rod 1 near the collar piece 4.

A grooved roller 3 attached to the tip of the supporting rod 1.
On the other hand, the cutting edge 53 of the blade plate 5 is arranged so as to stop at a slightly retracted position, and the cutting edge 53 is easily inserted from the end of the bending portion P2 while fitting the grooved roller 3 to the ridge of the bending portion P2. However, this is not necessarily an essential constituent element of the present invention, and therefore, although not shown, a space is vertically secured between the grooved roller 3 and the blade plate 5. However, even if the cutting edge 53 is formed so as to be aligned with the grooved roller 3 or protruded further than the grooved roller 3, a metal plate goby bending portion cutting tool capable of achieving the object of the present invention is realized. Therefore, they are naturally included in the present invention as well as those in the drawings shown as examples.

[0013]

The metal plate goby bending portion cutting tool of the present invention, which is realized by the above-described structure, has the grooved roller 3 arranged at the tip of the supporting rod 1 as shown in the perspective view of the usage state of FIG. Is fitted to the ridge side of the bent portion P2 of the metal plate P, and
Inside the blade edge 51 of the blade plate 5 inserted inside the bent portion P2,
When the grip rod 2 held by a hand is rotated in the direction shown by the arrow while the portion near the blade edge 52 is brought into contact with the inside of the end of the bent portion P2, the movement with the grooved roller 3 as a fulcrum is performed. Since the supporting rod 1 rotates in the direction away from the ridge, the blade plate 5 integrated with the supporting rod 1 also has the blade tip 51 that abuts on the inside of the end of the bent portion P2. As it moves into the outer side from the inside of the bent portion P2 as if it bites into, the position of the cutting edge 51 where the bent portion P2 is cut open in the process is moved in the direction of the cutting edge 53 while bending with this one stroke. The part P2 will be cut along the ridge for a predetermined range.

After that, when the gripping rod 2 is returned in the direction opposite to the direction of the previous rotation, that is, in the direction of approaching the ridge of the bent portion P2, the grooved roller 3 is further advanced along the ridge, Since the cutting edge 53 side is partially left in the bending portion P2, it is not necessary to fit the cutting edge 53 into the bending portion P2 again, and the blade plate 5 itself can be extremely smoothly bent.
Since it goes back inside 2 and returns to the initial state, after that, the same operation as described above is performed, the stroke is cut once again by a predetermined stroke, and the same operation is repeated to proceed with the work. In the case of the goby-processed metal plate P, the cutting at the bent portion P2 is completed, and the folded-back portion P3 above the ridge can be easily separated from the metal plate body P1. There is almost no deformed part in the, and the cutting work is completed with a very clean cut end.

As described above, the metal plate goby bending portion cutting tool of the present invention has a simple structure, but can perform a clean cutting work very easily by the lever principle, and in particular, a metal for roofing. It is a plate and cuts along the ridge of the goby bending part P2 by a simple operation without any danger, even if you need a semi-finished product according to the site on the ground with poor scaffolding. Since it is possible to carry out processing, and as before, it is possible to completely eliminate the wasteful work required before and after cutting processing, which greatly contributes to the efficiency of special cutting processing, and at the same time it has been traditional. It can be good news for the sheet metal processing industry with a shortage of craftsmen because it does not require the skill level required to make full use of the pinnacle scissors.

In particular, in the structure representative of the present invention shown in the embodiment, the cutting edge 53 of the blade plate 5 is formed slightly retracted from the grooved roller 3, and the grooved roller 3 is first bent to the bent portion P2. While suppressing the shaking of the hand by fitting it to the ridge of
In addition to having the excellent feature that the cutting edge 53 can be easily inserted into the narrow bent portion P2 end with a delay, the curved cutting edge portion 51a formed on the curved blade edge 51 extends to the bent portion P2 end portion. It also has the advantage of making the cutting process and subsequent cutting process extremely easy, realizing an ideal metal plate goby bending part cutting tool.

As described above, the metal plate goby bending portion cutting tool of the present invention is extremely rational for cutting the goby bending portion, which is a special processing portion that has never been prepared before. It is possible, since it has a simple structure, good operability, and can be provided as an inexpensive processing tool, of course, as a construction processing tool such as a roofing metal plate or an outer wall metal plate, Others, such as thin metal plates for housings of various equipment, have a substantially U-shaped bent section, V
It is expected that it will be widely spread as a cutting tool for a thin metal plate formed on a bent portion having a ridge such as a V-shaped, a L-shaped, an L-shaped or a V-shaped bent portion.

[Brief description of drawings]

The drawings show an embodiment of a metal plate goby bending portion cutting tool that is representative of the present invention.

FIG. 1 is a perspective view showing the whole.

FIG. 2 is a perspective view illustrating a usage state.

[Explanation of symbols]

 1 Supporting Rod 2 Gripping Rod 3 Grooved Roller 4 Collar Piece 41 Same Receiving Section 5 Blade Plate 51 Same Blade Edge 51a Same Cutting Edge Edge 51b Same Cutting Edge Edge 52 Same Blade Edge 53 Same Cutting Point P Metal Plate P1 Same Metal Plate Main Body P2 Same Bent part P3 Folded part

Claims (3)

[Claims] 1. A metal plate gore bend formed by forming a grooved roller at the tip of a supporting rod having a gripping rod on the rear side and integrally forming a blade plate with a cutting edge below the lower end edge of the supporting rod. Part cutting tool. 2. A grooved roller is formed at the tip of a supporting rod having a gripping rod on the rear side, and the grooved roller is a fulcrum of the lever below the lower end edge of the supporting rod, and the bending cross section is substantially U-shaped.
V-shaped, L-shaped, L-shaped, or V-shaped, etc., of the metal plate body formed in the bent portion having a ridge having a ridge, the blade edge portion abutting the metal plate back surface inside the bent portion is centered on the fulcrum A metal plate goby bending portion cutting tool obtained by integrating a blade plate with a cutting edge into an arrangement in which a blade plate with a cutting edge is integrated by restricting it to a position that can serve as an action point by receiving a rotational operation in a direction of breaking the bending portion of the metal plate from the inside to the outside. 3. A support rod having a grooved roller at its tip is integrated with the front end of a grip rod having a predetermined length via a collar piece, and the bending cross section is substantially U-shaped, V-shaped, or square-shaped, A metal plate body formed in a bent portion having an L-shaped or a V-shaped ridge has a plate thickness that can be inserted inside the bent portion so that the cutting edge faces the inner side of the bent portion of the metal plate body. , A long blade plate formed on a cutting blade tip portion that is loosely curved toward the blade tip side toward the blade tip and a cutting blade tip portion that is continuous to the cutting blade tip portion and is formed into a substantially straight line or a curve close to it , The cutting edge of the blade edge of the blade is substantially parallel to or slightly open from the supporting rod at a predetermined interval, and is formed integrally with the supporting rod near the flange at the same blade base. Characteristic metal plate goby bending tool.