JPS60210331A - Method of coupling plate material - Google Patents

Abstract

PURPOSE:To improve productivity and simplify the structure of the device by performing machining work to couple plate materials by one stage. CONSTITUTION:Flange parts 8, 9 to be coupled are superposed and placed on a die 14, and inserted into a punching hole 15 of the die 14. Then, parts corresponding to diagonals of hexagonal holes 10, 11 are cut in the flange parts 8, 9 by the first cutting edge 17 of a punch 16, and then, parts corresponding to each four sides are cut by the second cutting edge 18 leaving opposing two sides out of the hexagonal holes 10, 11, and hexagonal holes 10, 11 are formed. At the same time, a part left from cutting at the flange part 8 is connected to the flange part 8 by a folded part, and a trapezoidal disconnection preventing piece 12 that widens from the connected part forward and a tongue piece 13 are embossed. Thus, flange parts 8, 9 are coupled by one machine work process.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a method for joining overlapping plate materials by mechanical processing.

[Technical background of the invention]

For example, when joining steel plates together, it is generally done by welding, but in recent years, colored steel plates have become widespread, and it is difficult to join these colored steel plates together by welding.

Therefore, recently, when joining colored steel plates, a method of joining them by machining has been considered.In other words, in this method, two colored steel plates to be joined are placed on top of each other and placed on a die. Then, a two-step process is performed in which a part of the overlapping portion of both color steel plates is punched out from above, and then the punched out part is pushed outward from below. The pushed-out portion was prevented from coming out, thereby joining the two J-roller steel plates together.

[Problems with background technology]

However, the above-mentioned joining method by machining requires a two-step processing process, which has disadvantages in that it is inferior in manufacturability and the structure of the joining device is also complicated.

[Purpose of the invention]

Therefore, an object of the present invention is to provide a method for joining plates that can perform the machining process for joining the roots in a single step, thereby improving manufacturing efficiency and simplifying the structure of the device. is to provide.

[Summary of the invention]

The present invention is achieved by overlapping two plates to be joined, and punching them into a shape with a predetermined portion of both plates overlapped, with a part continuous with the plate and a part expanding forward from the continuous part. , a hole is formed in the polymeric plate material, and a retaining piece is formed that enters the hole and is prevented from coming out by this, and the two plates are made to stick together in a single machining process. This is one of its characteristics.

(Embodiment of the Invention) An embodiment of the present invention will be described below with reference to FIGS. 1 to 8.

First, Fig. 1 shows a door 1 with a refrigeration mark, and this door 1 is constructed by filling a foam insulation material (not shown) between an outer panel 2 made of colored steel plate and an inner panel 3 made of plastic. A gasket 4 is provided around the inner plate. here,
The outer panel 2 of this door 1 has a rectangular main panel 5,
Side plate parts 6 and 7 are bent and formed on the lower, left, and right parts (
Only one of the upper and left parts is shown in the figure), and the tips of each of these measuring plates 6 and 7 have flanges 8 and 9, which are plates, bent inward as shown in Figure 2. is formed (
In Figure 2, only one of the upper and left parts is shown), and
Adjacent flange parts 8 and 9 are overlapped at the four corners, and in this case, flange part 8 is located outside of flange part 9. At the overlapped portion with the flange portions 8 and 9, there are marks shown in FIGS.
As shown in the figure, hexagonal holes 10 and 11 are formed in both flange parts 8 and 9, and J3 is formed on the periphery of the hole 10 in the flange part 8 on two opposite sides. A trapezoidal retaining piece 12.12 is continuous with the flange 9 and extends forward from the continuous portion, penetrating the hole 11 of the flange 9 and bent inward. A trapezoidal tongue portion 13.13 is formed on two opposing sides of the flange portion 9 and is bent inwardly and extends from the continuous portion toward the front. Then,
The retaining piece part 12.12 of the flange part 8 is the flange part 9.
By entering into the hole 11, the retaining piece 12.12 is prevented from being removed from the hole 11, thereby joining the flange portion 8 and the flange portion 9.

Next, a method of connecting the flange portion 8 to the flange portion 9 will be described with reference to FIGS. 6 to 8. In FIG. 6, 14 is a die having a rectangular IJ extraction hole 15 in the center, and 16 is a punch provided above the die 14 so as to be movable up and down.This has a hexagonal cross section. A first cutting blade 17 is formed at the tip, and a pair of diagonal non-slanted blades are formed on the base end side of the first cutting blade 17. Two cutting blades 18.18 are formed on both left and right sides, and this second cutting blade 18.
Bent portions 19 having a sloped shape are formed between the portions 18 on both left and right sides. Then, as shown in FIG. 7, the flange portion 8 and Cj9 to be joined are placed on the die 14 in an overlapping state, and the punch 16 is lowered as shown in FIG. ] Fit into the extraction hole 15. Then, the first cutter 11i blade 17 of the punch 16 cuts hexagonal holes 10 and 11 (1
(see Figure 3) is cut, and then the second cutting blade 18 cuts the corresponding four sides of the hexagonal holes 10 and 11, leaving two opposing sides, thereby forming a hexagonal hole. At the same time, holes 10 and 11 having the same shape are formed, and at the same time, the portion remaining in the flange portion 8 from the above-mentioned cutting by the bending portion 19 is continuous with the flange portion 8, and a trapezoidal retaining piece portion is formed that expands forward from the continuous portion. 12.12 is punched out, and the flange portion 9 also has a trapezoidal tongue portion 13.13 which continues with the portion remaining from cutting in the same manner as the flange portion 8 and expands forward from the continuous portion. is launched. As a result, the retaining piece 12.12 of the flange portion 8 enters into the hole 11 of the flange portion 9 and is prevented from being removed by the locking member 11, so that the flange portion 8 and the flange portion 9 can be removed by one machine. The joining can be done through the processing process, which improves the productivity.Moreover, a simple punching device such as a die 14 and a punch 16 can be used for joining, and the equipment can be simplified.

It should be noted that the present invention is not limited to the above-mentioned embodiments. For example, as shown in FIGS. 9 and 10 as different embodiments of the present invention, the flange portions 8 and 9 have cut portions facing outward. The retaining piece part 22 and the tongue piece part 23 may be formed so as to form the holes 20 and 21 in the shape of an arc that bulges out, and even in this case, the same effect as the above embodiment can be obtained.

Furthermore, although the above-mentioned embodiments have been described as being applied to the joining of color steel plates, it goes without saying that the present invention can also be applied to the joining of ordinary steel plates.

〔Effect of the invention〕

The present invention is clear from the above description by forming a hole in the stacked plates, forming a retaining piece that enters the hole and is prevented from coming out, and joins the stacked plates. Zuru J: Sea urchin I With this, we have achieved the excellent effect of being able to join the plates together in a single machining process, thereby improving manufacturing efficiency and simplifying the equipment for joining. Rir.

[Brief explanation of the drawing]

1 to 8 show one embodiment of the present invention, in which FIG. 1 is a perspective view of the refrigerator door, FIG. 2 is an enlarged perspective view of the outer panel, and FIG.
The figure is an enlarged plan view of the same, Figure 4 is a vertical cross-sectional view taken along the line IV-IV in Figure 3, and Figure 5 is a 1lffil view taken along the line v-v in Figure 3.
Fig. 6 is a perspective view of the die and punch, Figs. 7 and 8 are enlarged longitudinal sectional views of main parts shown in the order of steps, and Figs. 9 and 10 are different embodiments of the present invention. FIG. 2 is a diagram corresponding to FIG. 2, and FIG. 3 is a diagram corresponding to FIG. 3, respectively. In the drawing, 8 and 9 are flange parts (plate 44), 10 and 1
1 is a hole, 12 is a retaining portion H, 20 and 21 are holes, and 22 is a retaining piece. Applicant Toshiba Corporation Figure 1 Figure 4 Figure 5 s6 Figure 7

Claims (1)

[Claims] 1. By overlapping two plates to be joined and punching them into a shape that has a part continuous with the plate and a part that expands forward from the continuous part while keeping the predetermined parts of both plates overlapped, A method for joining plate materials, characterized in that the two plates are joined by forming a hole in the polymeric plate material and forming a retaining piece portion which enters into the polymer plate material and is prevented from being removed by the same.