JPH09228596A - Bending adjusting tool for strip metal plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily bend a strip metal plate such as a gutter receiving metal fitting in a construction site without being distorted by providing a pair of abutment parts mutually opposed through a prescribed distance and each having round ends, and a specified groove part. SOLUTION: Contact parts 1-7 for abutting the parts to be made a bending adjustment of by a gutter receiving metal fitting are formed so that their end parts each may be round. The contact parts 1 and 2, 3 and 4, 3 and 5,... form a pair of contact parts mutually opposed through a prescribed distance, respectively, and a pair of abutment part according to the two-point supporting distance suitable for the bending angle is selected. For example, when the bending angle of the preliminarily bent part 21a of a gutter receiving metal fitting 21 is further increased, the bending part 21a is brought in to abutment on the contact parts 1, 2 so that the part 21a is fitted to a grove part 11 formed on the virtual lien connecting the abutment parts 1, 2, and the bending part 21a is tapped by a hammer to adjust the bending angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strip metal plate bending work adjusting tool for adjusting a bending angle of a strip metal plate such as a gutter receiving fitting.

[0002]

2. Description of the Related Art Generally, a gutter receiving fitting (crane neck fitting) for a rain gutter for a house is commercially available after being bent beforehand in accordance with a standard house. Before installing this commercially available gutter support fitting on site, adjust the angle of the bent part of the crane neck fitting that has been pre-processed according to the above standard house to match the actual condition of the target house. Need to be adjusted on site. In that case, conventionally, the builder (worker) adjusts the angle of the bent part of the crane neck fitting by pressing the crane bracket with one hand while hitting it with a hammer etc. It is the current situation.

[0003]

As described above, conventionally, there has not been a dedicated tool for adjusting the angle of the bent portion of the gutter receiving fitting (crane neck fitting) at the construction site. Therefore, the following problems have occurred. That is, first, when the builder is working to hit the gutter receiving metal fitting on an unstable scaffolding board at a high place as a work site, when force is applied or the posture is changed greatly, etc. There is a problem in that there is a risk of falling. Also, since the angle of the bent part is adjusted without using a dedicated tool, the metal fittings will be greatly distorted and the aesthetics will be spoiled, and it will be more troublesome to correct the distortion. is there.

The present invention has been made by paying attention to the problems of the prior art as described above, and it is extremely easy to bend a band-shaped metal plate such as a gutter receiving metal fitting at a construction site without causing distortion. It is an object of the present invention to provide a bending work adjusting tool for a strip-shaped metal plate that is capable of performing.

[0005]

[Means for Solving the Problems] A bending-work adjusting tool for a strip-shaped metal plate according to the present invention for solving the above problems is made of metal such as iron having a size that a user (builder) can hold with one hand, A first pair of abutting portions that are provided to face each other with a first distance therebetween and have rounded tips, and a metal that is a processing target and includes the first pair of abutting portions. It has a width slightly larger than the thickness dimension of the plate,
And a groove portion for supporting the strip-shaped metal plate formed on an imaginary line connecting the pair of contact portions.

Further, in the bending work adjusting tool for a strip-shaped metal plate according to the present invention, it is further provided so as to be opposed to each other through a second distance different from the first distance, and each of the tips has a rounded end. The second pair of contact portions, and the second pair of contact portions, and has a width slightly larger than the thickness dimension of the metal plate to be processed. It is desirable to provide a groove portion for supporting the strip-shaped metal plate formed on an imaginary line connecting the contact portions.

In the bending work adjusting tool for a belt-shaped metal plate according to the present invention, the band-shaped metal plate is bent between the first pair of abutting portions provided at the first distance from each other. It is preferable that a concave portion for forming the concave portion is formed, and that the portion where the concave portion is formed is a grip portion having a thickness that can be grasped by a user with one hand.

Further, in the bending work adjusting tool for a strip-shaped metal plate according to the present invention, three layers of metal plates, that is, two outer plates and an intermediate plate interposed therebetween are stacked on each other along the longitudinal direction thereof. The intermediate plate has a width slightly larger than the width of the metal plate to be processed so as to form the groove portion, and the whole planar shape is It is preferable that the outer plates are smaller than the two outer plates, and the middle plate is replaceable and replaceable with respect to the outer plates.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION When using the present invention, a user (constructor) holds the working tool of the present invention in one hand and the band-shaped metal plate to be bent with the other hand. Then, both ends of the bent portion of the strip-shaped metal plate to be bent are connected to the first pair of contact portions of the processing tool (the pair of contact portions are formed in the groove portion). Abutment is made to support the bent portion of the strip-shaped metal plate along the groove. Thus, the bent portion of the strip-shaped metal plate is supported by the first pair of contact portions in the direction parallel to the longitudinal direction of the strip-shaped metal plate and is substantially orthogonal to the longitudinal direction of the strip-shaped metal plate. In the direction, it will be supported by the inner wall portion of the groove. In this state, the user holds the bent portion of the strip-shaped metal plate of the present invention with one hand and hits the strip-shaped metal plate with the hammer with the other hand. Accordingly, the bending of the strip-shaped metal plate can be easily performed without distortion, and the angle of the bending process of the strip-shaped metal plate that has been previously bent can be easily performed without distortion.

Further, the present invention further comprises a second pair of contact portions opposed to each other at an opposed distance different from the opposed distance between the first pair of contact portions. Therefore,
Depending on the angle of bending of the strip-shaped metal plate (that is, what is the distance between the pair of abutting portions suitable for performing the process adjustment of the strip-shaped metal plate that is the target of the bending process adjustment work). Depending on whether or not is desirable), either the first pair of contact portions or the second pair of contact portions can be arbitrarily selected and used. That is, the pair of first and second contact portions are opposed to each other through a predetermined distance different from each other. What size is desirable as the distance of the contact is a strip-shaped metal plate to be adjusted. Since it may differ depending on the bending angle of the bending portion, the builder, depending on the bending angle to be adjusted, the two contact portions facing each other through the first distance or the Either of the two second contact portions facing each other through the second distance can be arbitrarily selected and used.

Further, according to the present invention, a concave portion for bending is formed between the two contact portions of the bending adjustment tool. For example, when performing a bending process on a linear strip-shaped metal plate, the recessed portion is supported along the recessed portion of the strip-shaped metal plate by supporting the strip-shaped metal plate and striking the strip-shaped metal plate from above. It is used for bending without distortion.
Further, in the present invention, the portion where the concave portion is formed (the portion where the concave portion of the bending work adjusting tool is formed) has a thickness that can be grasped by one hand of a person, and the portion having the concave portion is the one hand of the person. It is a grip that can be held with. Therefore, the operator can stably perform the angle adjustment work by holding the grip portion, and the bending work adjusting tool according to the present invention can be easily carried.

Further, according to the present invention, three layers of metal plates, which are two outer plates and an intermediate plate interposed therebetween, are connected to each other in a state of being overlapped with each other along the longitudinal direction of the bending work adjusting tool. The middle plate is formed to be thinner than the other two outer plates and to have a planar shape smaller than that of the other two outer plates so as to form the groove portion. The middle plate is replaceable and replaceable. Therefore, the middle plate forming the groove is worn relatively quickly by the impact of a hammer, but even at that time, it is not necessary to discard the entire bending work adjusting tool, and only the middle plate is removed. It is economical because it can be replaced and reused.

[0013]

【Example】

Embodiment 1 FIG. Hereinafter, Embodiment 1 of the present invention will be described. Figure 1
2 is a perspective view showing a bending work adjusting tool for a gutter receiving fitting according to the first embodiment. This bending work adjusting tool is integrally formed of metal such as iron. 1-2,
Reference numerals 1, 2, 3, 4, 5, 6, and 7 are abutting portions for abutting a work target portion of the bending processing adjustment of the gutter receiving fitting. As shown in the drawing, each of these abutting portions is formed such that the tip end portion thereof has a rounded shape (has a radius and is not angular). Further, as shown in the drawing, on the outer peripheral surface of the bending work adjusting tool, the groove portion 11 is formed on an imaginary line connecting the contact portions 1, 2, 3, 4, and 5.
Are formed. Furthermore, as shown in the drawing, a groove portion 12 is formed on an imaginary line connecting the contact portions 6 and 7 on the outer peripheral surface of the bending work adjusting tool. These grooves 11
Widths of 12 and 12 are formed to be slightly larger than the thickness width of the bent portion of the gutter receiving fitting. The groove portion 11 and the groove portion 12 are formed in directions substantially orthogonal to each other, as shown in the drawing.

Further, in the first embodiment, the abutting portions 1,
Of 2, 3, 4, 5, 6, and 7, contact portions 1 and 2, contact portions 3 and 4, contact portions 3 and 5, contact portions 4 and 5, and contact portion 6 7 and the like correspond to "a pair of abutting portions opposed to each other with a predetermined distance" in the present invention. These "pairs of abutting portions" are opposed to each other via mutually different distances. By the way, when trying to bend a strip-shaped metal plate, or when trying to adjust the bending angle of a strip-shaped metal plate that has been previously bent, at two points separated by a distance suitable for the bending angle, It is necessary to support (two-point support) the target part of the bending adjustment. In the first embodiment, since the "pair of abutting portions" face each other with a distance different from each other, the user has two points suitable for the angle of the target portion to be bent and adjusted. Considering the supporting distance, the pair of abutting portions having opposing distances that match the suitable two-point supporting distance can be arbitrarily selected and used.

Further, in the first embodiment, as shown by A in FIGS. 1 and 2, a recess is formed. This recess A
Is for supporting (straightening) a linear strip-shaped metal plate or a slightly bent strip-shaped metal plate in the groove 11 and hitting it with a hammer or the like in the direction of the recess A (bending). belongs to. Further, the portion of the bending work adjusting tool of Example 1 in which the concave portion A is formed has a thickness that allows the operator to easily hold it with one hand. This allows
A grip portion is formed for the installer to carry the bending work adjusting tool with one hand and to hold it when performing the bending work adjustment. In addition, in FIGS.
Is a string (or a metal chain) that the builder can use when carrying the bending adjustment tool.
This embodiment 1 can be carried by putting one's wrist in it, or by hanging this string 13 on a hook or the like attached to a belt.

Next, a method of using the first embodiment will be described with reference to FIGS. First, a method of using the present embodiment for increasing the bending angle of the pre-bent portion 21a of the gutter receiving metal fitting 21 (making the inclination of the bending angle gentler) will be described with reference to FIG. First, the builder holds the bending work adjusting tool with, for example, the left hand, and holds the gutter receiving fitting 21 with the other right hand. Then, as shown in FIG. 3, while fitting the bent portion 21 a of the metal fitting 21 into the groove portion 11, the metal fitting 2 is attached to the pair of contact portions 1 and 2.
The first bent portion 21a is brought into contact.

Then, the builder adjusts the bending angle by hitting a hammer (not shown) from above the bending portion 21a with the other right hand while holding the bending adjustment tool with the left hand. At this time, the groove portion 11 is formed slightly larger than the thickness of the bent portion 21a as described above. Therefore, the bending portion 21a is supported by the groove portion 11 and is deformed while being guided along the extending direction of the groove portion 11 (in this case, the bending angle is larger, that is, the inclination of the bending portion 21a is larger). Since it is deformed so that it becomes looser, distortion (strain in a direction other than the longitudinal direction of the bent portion 21a) does not occur in the finish. Further, as described above, since each contact portion is rounded at the tip thereof, even if it is struck with a hammer as described above, the metal fitting 21 is made by the contact portions 1 and 2.
There is no risk of the surface of the bent portion 21a of the above being damaged.

As described above, the first embodiment is sized so that the operator can hold it with one hand, and the concave portion A also forms a grip portion that is easy to grip, so that the height and the height of the grip are not high. Even on a stable scaffold, by using the first embodiment, the work for adjusting the bending angle of the gutter receiving metal fitting 21 as described above can be performed very easily.

Next, another method of using this embodiment for increasing the bending angle of the pre-bent portion 21a of the gutter receiving metal fitting 21 (making the inclination of the bending angle gentler) will be described with reference to FIG. It will be described based on. The builder holds the bending adjustment tool with his left hand and the gutter receiving metal fitting 21 with his other right hand.
have. Then, as shown in FIG. 4, the bent portion 21 a of the gutter receiving metal fitting 21 is brought into contact with the pair of contact portions 3 and 5 while being fitted into the groove portion 11.
Then, the builder hits a hammer from above the bending portion 21a with the other right hand while holding the bending adjustment tool with the left hand, and adjusts the bending angle (widens the angle). Also in this case, as in the first embodiment, the bending portion 21a is guided by the groove portion 11 and deforms without distortion so that the bending angle becomes larger.

Next, when the bending portion 21b (see FIG. 5) of the gutter receiving metal fitting 21 having a small bending angle is adjusted so that the bending angle becomes gentler, the bending processing according to the first embodiment is performed. A method of using the adjusting tool will be described with reference to FIG. The builder holds the bending adjustment tool with his left hand and the gutter support fitting 21 with his other right hand.
Then, as shown in FIG. 5, both ends of the bent portion 21b of the gutter receiving metal fitting 21 to be adjusted are brought into contact with the pair of contact portions 6 and 7, respectively. At this time, the bent portion 21b of the metal fitting 21 is fitted in the groove 12. Then, the builder adjusts the bending angle (widens the angle) by hitting a hammer from above the bending portion 21b with the other right hand while holding the bending adjustment tool with the left hand. Also in this case, similarly to the first embodiment, the bending portion 21b is guided by the groove 12 and is deformed so that the bending angle becomes larger without distortion.

Next, referring to FIG. 6, a method of using the bending work adjusting tool according to the first embodiment when bending the substantially straight portion 21c of the gutter receiving metal fitting 21 so as to bend at a certain angle will be described. Explain. The builder holds the bending adjustment tool with his left hand and the other side with his right hand gutter receiving fitting 2
Have one. Then, as shown in FIG.
The linear portion 21c of the above is abutted against the pair of abutting portions 3 and 4 while being fitted into the groove portion 11. Then, the builder hits a hammer from above the linear portion 21c with the other right hand while holding the bending work adjusting tool with the left hand to perform processing so that the linear portion 21c is curved in the direction of the recess A. . Also in this case, as in the first embodiment, the linear portion 21c is guided by the groove portion 11 to form the concave portion A.
It is bent without distortion in the direction of approaching the bottom.

Embodiment 2 FIG. Next, a second embodiment of the present invention will be described. 7 is a perspective view showing a bending work adjusting tool for a gutter receiving fitting according to the second embodiment, FIG. 8 is a side view thereof, and FIG. 9 is an exploded perspective view thereof. In the second embodiment as well, as in the first embodiment, a groove portion 41 extending in the longitudinal direction at the central portion in the longitudinal direction of the outer peripheral surface of the bending work adjusting tool is formed. The width of the groove portion 41 is formed to be slightly larger than the width of the gutter receiving metal fitting to be bent or adjusted. Further, in the groove portion 41, the contact portions 31, 32, 33, with which the gutter receiving metal fittings to be subjected to the bending adjustment are brought into contact,
And 34 are formed. This contact portion 31, 32, 3
Each of 3, 3 and 34 is formed to have a rounded shape so that the gutter receiving metal fittings to be abutted are not damaged. Further, as shown in FIG. 7, between the contact portions 31 and 32, a concave portion B which is depressed toward the center of the bending adjustment tool body.
Are formed.

Further, in the second embodiment, as shown in FIGS. 8 and 9, the bending work adjusting tool includes outer plates 25 and 26 made of metal and having a relatively large width, and a metal interposed between the outer plates 25 and 26. It is made up of three metal plates including a middle plate 27 which is made of steel and has a relatively thin width. These three metal plates 25, 26
And 27 are configured such that bolts 28 are tightened with nuts 29 through holes 25a, 27a, and 26a, and are connected to each other in a state of being overlapped with each other. The middle plate 27 is formed to have a width slightly larger than the width of the gutter receiving metal fitting, which is an object of bending work adjustment. The middle plate 27 has two outer plates 25 and 2
The overall size of the plane is slightly smaller than that of No. 6. Thereby, the middle plate 2 is provided between the outer plates 25 and 26.
As shown in FIG. 8, the intermediate plate 27 is recessed from the outer plates 25 and 26 by a predetermined dimension toward the inside of the main body of the bending adjustment tool when connected by interposing 7 therebetween. As a result, the edge of the intermediate plate 27 constitutes the bottom of the groove 41.

Further, in general, the groove 41 is apt to be worn due to the impact of a hammer or the like during machining adjustment, but in the second embodiment, as described above, the two outer plates 25, 26 and the one middle plate 27 are used. Therefore, when the inner plate 27 forming the groove 41 is worn, it is possible to replace only the inner plate 27 with another new middle plate.

Next, a method of using the second embodiment will be described. First, referring to FIG. 10, a method of using the second embodiment in the case where the pre-bent portion 21b of the gutter receiving metal fitting 21 having a relatively steep slope is adjusted more gently in the slope of the bending angle thereof will be described with reference to FIG. Explain. In this case, as shown in FIG. 10, both end portions of the portion 21b are fitted into the pair of contact portions 32 and 33 while being fitted into the groove portion 41 between the pair of contact portions 32 and 33 of the second embodiment. , Respectively. In this manner, the portion 21b is supported and hit with a hammer or the like in the direction indicated by arrow α in the figure. As a result, the bending angle of the portion 21b can be deformed more gently along the groove 41 without distortion.

Next, a second embodiment in which the bending angle of the pre-bent portion 21a of the gutter receiving metal fitting 21 having a relatively gentle inclination is adjusted more gently
The method of using will be described with reference to FIG. In this case, as shown in FIG.
While being fitted in the groove portion 41 between the pair of contact portions 33 and 34, the pair of contact portions 33 and 34 are brought into contact with each other. In this manner, the portion 21a is supported and hit with a hammer or the like in the direction indicated by arrow β in the figure. As a result, the bending angle of the portion 21a can be deformed more gently along the groove 41 without distortion.

Next, a method of using the second embodiment for bending the substantially straight portion 21c of the gutter receiving fitting 21 will be described with reference to FIG. In this case, as shown in FIG. 12, the portion 21c is replaced with the pair of contact portions 31 of the second embodiment.
While being fitted in the groove 41 between the contact portions 31 and 32, the contact portions 31 and 32 are brought into contact with each other. In this manner, the portion 21c is supported, and is hit with a hammer or the like in the direction of the recess B, that is, in the direction indicated by the arrow γ in the figure. This allows
Bending can be performed to bend the portion 21c along the groove 41 without distortion.

Embodiment 3 FIG. Next, a bending work adjusting tool for a strip-shaped metal plate such as a gutter receiving fitting according to a third embodiment of the present invention will be described. FIG. 13 is a perspective view showing the whole of the third embodiment. In the third embodiment, a recess C extending in the longitudinal direction is formed on the upper surface of one metal body 50 (made of iron) as shown in FIG.
Are formed. In addition, on the upper surface of the metal body 50,
A plurality of groove portions 53 are provided in a direction substantially orthogonal to the longitudinal direction.
Are formed at a plurality of positions at predetermined intervals. Further, at both ends of the upper surface of the metal body 50, in the groove portion 53,
Contact portions 51a to 51f and 52a to 52f are formed. The contact portions 51a to 51f and 52a to 52f.
In order to prevent the strip-shaped metal plates, such as the gutter receiving metal fitting, that are abutted from being damaged, the rounded shapes are formed along the longitudinal direction of the abutted strip-shaped metal plates. In the third embodiment, the contact portions 51a and 52a, 51b facing each other are provided.
And 52b, 51c and 52c, 51d and 52d, 51e and 52e, and 51f and 52f, respectively, constitute "a pair of abutting portions" that are opposed to each other at a predetermined distance.

In the third embodiment, as shown in FIG. 13, the above-mentioned "pair of contact portions" 51a and 52a are provided.
Distance between a, 51b and 52b, 51c
Between 52 and 52c, between 51d and 52d,
The distance between 51e and 52e and the distance between 51f and 52f are different from each other.

That is, in the third embodiment, as shown in FIG. 13, a pair of abutting portions of the pair of abutting portions that gradually face each other gradually move from the front side to the back side (the direction indicated by the arrow Y) in the figure. The interval is large. That is, the distance between the pair of contact portions 51e and 52e is slightly larger than the distance between the pair of contact portions 51f and 52f facing each other. Similarly, the distance between the pair of contact portions 5e is greater than the distance between the pair of contact portions 51e and 52e facing each other.
The distance between 1d and 52d is slightly larger. In this way, the distance between the pair of contact portions gradually increases in the direction of the arrow Y in the figure.
Therefore, the user of the third embodiment has an interval of a size suitable for the work depending on the size of the bending angle of the band-shaped metal body such as the gutter receiving metal fitting to be subjected to the bending work or the adjusting work. The pair of contact portions can be arbitrarily selected and used.

Next, a specific method of using the third embodiment will be described with reference to FIGS. 14 and 15. 14 and 15 are schematic diagrams of FIG. 13 viewed from the direction indicated by the arrow X in FIG. Here, first, an operation for adjusting the bending angle of the pre-bent portion 21a of the strip-shaped metal plate such as the gutter receiving metal fitting to be larger will be described with reference to FIG. In this case, the portion 21a is supported by being brought into contact with the pair of contact portions 51a and 52a while being fitted into the groove portion 53 between the pair of contact portions 51a and 52a. In this state, the portion 21a is hit with a hammer or the like in the direction of the recess C, that is, from the upper side to the lower side in the drawing. As a result, the portion 21a is distorted and deformed to have a gentler bending angle.

Next, the operation of bending the substantially straight portion 21c of the strip-shaped metal plate such as the gutter receiving fitting will be described with reference to FIG.
5 will be described. In this case, the portion 21c
While being fitted in the groove portion 53 between the pair of contact portions 51a and 52a, the pair of contact portions 51a and 52a are brought into contact with and supported. In this state, the portion 21a is hit with a hammer or the like in the direction of the recess C, that is, from the upper side to the lower side in the drawing. As a result, the bending process (curving process) of the portion 21c is performed without distortion.

[0033]

As described above, according to the present invention, the user can very easily operate the strip-shaped metal plate such as the gutter receiving metal even on an unstable work site such as a scaffold at a high place at a construction site. Bending and adjustment of the bending angle can be performed, and moreover, bending and adjustment can be performed neatly without distortion.

Further, according to the present invention, the user is further provided with the first pair of contact portions and the second pair of contact portions having different facing distances. Either the second pair of contact portions or the second pair of contact portions can be arbitrarily selected and used. That is, the desired dimension of the facing distance between the pair of abutting portions facing each other may differ depending on the bending angle of the bending portion of the strip-shaped metal plate that is the adjustment target, so the user may Either the first pair of contact portions or the second pair of contact portions can be arbitrarily selected according to the bending angle.

Further, in the present invention, a concave portion for bending is formed between the two abutting portions in the longitudinal direction of the bending adjustment tool. With this recess, for example, when bending a linear strip-shaped metal plate, the strip-shaped metal plate is bent in the direction of the inside of the recess by supporting the strip-shaped metal plate on the recess and applying an impact from above. It becomes possible to process (bend). Further, in the present invention, the portion where the concave portion is formed has a thickness that can be grasped by one hand of a person, and the concave portion serves as a grip portion that can be grasped by one person of the hand. Therefore, the user can stably perform the angle adjustment work by holding the grip portion, and the bending work adjusting tool can be easily carried.

Further, according to the present invention, three layers of metal plates, that is, two outer plates and an intermediate plate interposed therebetween are connected to each other along the longitudinal direction of the bending work adjusting tool. ,
The middle plate constitutes the groove portion, and the middle plate is replaceable and replaceable. Therefore, the middle plate forming the groove is worn relatively quickly by the impact of a hammer, but even at that time, it is not necessary to discard the entire bending work adjusting tool, and only the middle plate is removed. It is extremely economical because it can be replaced and used again.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing the first embodiment.

FIG. 3 is a diagram for explaining how to use the first embodiment.

FIG. 4 is a diagram for explaining how to use the first embodiment.

FIG. 5 is a diagram for explaining a method of using the first embodiment.

FIG. 6 is a diagram for explaining a method of using the first embodiment.

FIG. 7 is a perspective view showing a second embodiment of the present invention.

FIG. 8 is a side view of the second embodiment.

FIG. 9 is an exploded perspective view of the second embodiment.

FIG. 10 is a diagram for explaining how to use the second embodiment.

FIG. 11 is a diagram for explaining how to use the second embodiment.

FIG. 12 is a diagram for explaining how to use the second embodiment.

FIG. 13 is a perspective view showing a third embodiment of the present invention.

FIG. 14 is a diagram for explaining how to use the third embodiment.

FIG. 15 is a diagram for explaining how to use the third embodiment.

[Explanation of symbols]

1-7, 31-34, 51a-51f, 52a-52f
Contact part 11, 12, 41, 53 Groove part 13 String 21 Gutter receiving metal fitting 25, 26 Outer plate 27 Middle plate 28 Bolt 29 Nut A, B, C Recessed part

Claims (4)

[Claims] 1. A bending process of a strip-shaped metal plate for bending a substantially linear strip-shaped metal plate in a direction parallel to its plane, or for adjusting a bending angle of a pre-bent band-shaped metal plate. A first pair of adjusting tools, each of which is made of metal such as iron and has a size that a user can hold with one hand, faces each other through a first distance, and has a rounded tip at each end. The contact portion and the first pair of contact portions are formed on a virtual line connecting the first pair of contact portions, and are slightly larger than the thickness width of the strip-shaped metal plate to be processed and adjusted. And a groove portion having a width. 2. The bending adjustment tool for a strip-shaped metal plate according to claim 1, further facing each other through a second distance different from the first distance, each of which has a rounded tip. , A second pair of contact portions, and a thickness width of a band-shaped metal plate which is formed on a virtual line connecting the second pair of contact portions and includes the second pair of contact portions and which is a processing target. A bending work adjusting tool for a strip-shaped metal plate, comprising: a groove having a width slightly larger than that of the groove. 3. The bending work adjusting tool for a strip-shaped metal plate according to claim 1, wherein a strip-shaped metal is provided between the first pair of abutting portions facing each other with a first distance therebetween. Bending of the strip-shaped metal plate, characterized in that a concave portion for bending the plate is formed, and the portion in which the concave portion is formed is a grip portion having a thickness that allows a person to grasp it with one hand. Processing adjustment tool. 4. The bending adjustment tool for a strip-shaped metal plate, wherein three metal plates, two outer plates and an intermediate plate interposed therebetween, are stacked in three layers along the longitudinal direction thereof. The intermediate plate has a width slightly larger than the thickness width of the strip-shaped metal plate to be processed and adjusted, and the entire flat surface thereof so as to form the groove portion. The shape is formed smaller than the other two outer plates, and the middle plate is replaceable and replaceable with respect to the two outer plates. Three
Bending adjustment tool for strip metal plate.