JPH0351504B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of fitting and adhering metal plates by bending. More specifically, the present invention relates to a method for manufacturing boxes, cylinders, and other products of desired shapes by bending the ends of a metal plate by bending and engaging these bent portions.

(Prior art and problems to be solved by the invention) Conventionally, forming a metal plate into a box shape involves cutting the metal plate into desired dimensions and connecting the cut ends by welding or the like. , it is usually formed into a box of a desired shape.

However, welding methods, whether electric welding, gas welding, or thermite welding, must be carried out using welding equipment.
There are problems in that the actual work is cumbersome and additional costs are required in order to prepare tools for welding.

Furthermore, once the welding of the members is completed, even if these members are separated and attempted to be reused, there is a problem that the members are destroyed and cannot be reused because they cannot be returned to their original state.

Therefore, the inventor of the present application improved the above-mentioned method by fitting together the ends of metal plates bent by bending, stretching the metal plates in a desired direction with reference to the fitting part, and A method of forming a product with a desired shape by bending the ends was presented (Japanese Patent Application No. 1988-088462).In the product manufactured by the above method, the bent parts that fit together are bent by external force. There were problems such as displacement, misalignment, and product defects.

(Means and effects for solving the problems) Therefore, the present invention aims to solve the above-mentioned problems, and the means and effects thereof will be disclosed below.

In order to achieve the purpose of joining members, the present invention adopts a basic structure in which bent parts are formed at the ends of the members and these bent parts are fitted into each other to make a close contact. This provides a means for preventing displacement of the curved portion.

The ends of the metal plates bent by bending are fitted together to bring them into close contact with each other, and the metal plates are stretched in a desired direction with reference to the fitted and tight part,
In the bending process in which a product with a desired shape is formed by bending the end of the metal plate, one of the bent parts of the metal plate is deformed to adjust the coefficient of friction generated on the contact surface, or one of the bent ends Disclosed is a method of fitting and adhering a metal plate by bending, in which a tongue piece formed by extending a tongue piece is bent and brought into contact with another bent end.

(Examples) Examples according to the present invention will be described below with reference to the accompanying drawings.

FIG. 9, FIG. 10, and FIG. 11 disclose a conventional example of a fitting structure of a bent portion of a metal plate. The adjacent portion 8 or 10 of the flat metal plate 4 is formed into a bent portion 6 or 12, and these bent portions 6 and 12 are tightly fitted together. In the present invention, the bent portions 6, 12
one end of which is formed into an L-shaped portion 13;
The flat portion f of this L-shaped portion 13 comes into contact with the surface of the other bent portion 6 to generate contact friction between the flat portions.

Due to this contact friction, both bent portions 6 and 12 are engaged with each other in this embodiment so that they cannot be displaced in the longitudinal direction. (3rd
(See Figure 4).

Furthermore, in order to prevent displacement when the two bent parts 6 and 12 are fitted, the end of the bent part 12 is extended to provide a tongue piece 16 (Fig. 5), and this tongue piece 16 is bent (Fig. 5). (Fig. 6) It is also possible to make the bent portion 6 abut against each other. FIG. 1 shows a furnace 18 in which a bent portion 12 is provided with an L-shaped portion 13, and this L-shaped portion 13 is brought into contact with another bent portion 6. Reference numeral 20 denotes an opening of the furnace, 22 an eave, 24 a furnace grate, and a lid 26 is attached to the opening 20. Furthermore, in order to restrict vertical displacement of the fitting portion between the eave 22 and the main body of the furnace 18, the end of the bent portion 12 of the eave 22, that is, the portion of the bent portion 13, is extended, as shown in FIG. The tongue piece 16 may be formed as shown in FIG. 6, and the tongue piece 16 may be bent as shown in FIG. 6 and brought into contact with the bent portion 6 so as to cover it. Since the tongue piece 16 is in contact with the bent portion 6, vertical movement of the eaves 22 is restricted.

Furthermore, since the eaves 22 and the main body of the furnace 18 are formed to be detachable, it is only necessary to remove the eaves 22 from the main body of the furnace 18 and then pack and transport the plurality of furnaces 18 main bodies and the plurality of eaves 22 respectively. It saves space and reduces transportation costs. Furthermore, by changing the angle formed by the adjacent parts 8 and 10 in the present invention, for example, a right angle (FIGS. 12 and 15), a horizontal angle of 380 degrees (FIG. 13),
Obtuse angle (Fig. 14, Fig. 16) or acute angle (Fig. 17)
If they are arranged as shown in Figure), it is convenient to manufacture products with desired shapes.

Furthermore, as shown in FIGS. 18 and 19, it is also possible to manufacture various types of close-fitting configurations that form various elevation angles. In the figure, R ₁ , R ₂ , R ₃ are the center O
The radius of twist, l is the length formed by the arc, θ ₁ , θ ₂ ,
θ ₃ is the angle with respect to the water surface, and h is the height.

It goes without saying that it is possible to easily manufacture cylinders, boxes, IC boards, measuring instruments, hoppers, etc. using the methods shown in the above two embodiments, and it is also possible to easily manufacture cylinders, boxes, IC boards, measuring instruments, hoppers, etc. We can manufacture products.

(Effect) In the present invention, an L-shaped portion or a tongue piece is provided on the bent portion of the metal plate, and the L-shaped portion is brought into contact with another bent portion or the tongue piece is folded to form another bent portion. By abutting the end portion of the bent portion, displacement of the bent portion when the bent portion is tightly fitted can be prevented.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a furnace manufactured using the fitting method of the present invention. FIG. 2 is a perspective view of the lid of the furnace shown in FIG. FIG. 3 and FIG. 4 are a plan view and a perspective view, respectively, showing the fitting method according to the present invention. Fifth
The figure is a perspective view of another embodiment of the fitting and adhesion method according to the present invention. FIG. 6 is a perspective view showing the locked state by the tongue piece. FIG. 7 is a plan view of FIG. 5. FIG. 8 is a side view of FIG. 7. FIGS. 9A and 9B are perspective views each showing a conventional fitting method. FIGS. 10 and 11 are perspective views of the conventional example, each showing a state in which the flat plate portion is bent at a predetermined angle. FIG. 12 is a side view showing the angle formed by the adjacent portions being at right angles. FIG. 13 is a side view showing adjacent parts formed in a straight line. FIG. 14 is a side view of the adjacent portion formed at an obtuse angle, FIG. 15 at a right angle, FIG. 16 at an obtuse angle, and FIG. 17 at an acute angle. FIG. 18a is a plan view of a bending fitting member that forms an elevation angle, and FIG. 18b is a side view thereof. FIG. 19a is a plan view of a bending fitting member that forms an elevation angle, and FIG. 19b is a side view thereof. f...Plane part, 4...Metal plate, 6...Bending part,
8, 10... Adjacent part, 12... Bent part, 13...
L-shaped part, 16... tongue piece, 18... furnace.

Claims (1)

[Claims] 1. Fit the bent ends of the furnace main body and the end of the eaves by bending, and extend one of the bent ends upward to form a tongue piece;
By bending this tongue piece, it comes into contact with the upper end of the other bent end so as to cover it, so that the furnace body and the eave can be attached and detached, and the vertical direction between the furnace body and the fitting part of the end of the eave is made removable. A furnace characterized by regulating displacement.