JPS6096387A - Joining method of metallic plate - Google Patents

Abstract

PURPOSE:To perform quickly welding with high quality by disposing a beam shielding plate between preceding and succeeding metallic plates, irradiating beams thereto from an upper diagonal direction to cut the plates then irradiating the beams from the same position as in the stage of cutting in conformity with the same plane. CONSTITUTION:A preceding metallic plate 1 and a succeeding metallic plate 2 are clamped to overlap on each other in parallel apart at a specified distance and a beam shielding plate 12 is disposed between the plates 1 and 2. Laser beams 7a, 7a' are irradiated simultaneously from the upper diagonal direction and lower diagonal direction of the plates 1, 2 by maintaining a specified angle to cut simultaneously and linearly the two plates 1, 2. After the plate 12 is moved, the end plate 8 of the plate 1 and the end plate 9 of the plate 2 are mechanically removed. The plate 1 is thereafter moved downward and the plate 2 upward respectively at the same distance to array the plates on the same plane in tight contact with each other. Laser beams 7b, 7b' are thereafter irradiated from the top and bottom surfaces in the same position as in the stage of cutting to connect thoroughly the two plates 1, 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] This invention relates to a continuous processing line for metal plates, for example, relatively thick strip-shaped metal plates, in which two metal plates are treated with a high energy density beam, for example a laser beam. The present invention relates to a method for joining metal plates quickly and with high quality.

[Prior art]

Generally, as a method for joining metal plates of this kind, the method explained in FIGS. 1 and 2 is known. In the method shown in FIG. The parts to be joined to the plate 2 are stacked in contact with each other, and the two metal plates 1 and 2 are simultaneously melted and cut by the laser beam 7a irradiated from the upper right angle direction of these metal plates (Fig. 1a).
). After this fusing, the preceding metal plate 1 is advanced a certain distance in the metal plate advancing direction, and the end plate 8 of the preceding metal plate 1 is
Mechanically remove the metal plate 1.2 by passing it between the metal plates 1.2 (Fig. 1b
). After that, the preceding metal plates 1 are returned in the opposite direction taking into consideration the fusing gap created during fusing, and these metal plates 1
, 2 are brought into close contact with each other and welded (joined) with a laser beam 7b. At this time, the laser beam 7b needs to be irradiated in a different direction (tilted) with respect to the laser beam 7a at the time of fusing (FIG. 1C).

In the device shown in Fig. 2, two metal plates 1.2 are placed side by side, and the laser beam 7a is divided into two beams to simultaneously melt and cut these metal plates 1.2 in parallel. Mechanically remove the end plates 8, 9 downward (Fig. 2 8)
. Thereafter, the trailing metal plate 2 is advanced in the advancing direction of the metal plate, taking into consideration the fusing gap 10.11, and the metal plates 1.2 are brought into close contact with each other and welded by the laser beam 7b. In this case as well, it is necessary to change the irradiation direction of the laser beam 7b with respect to the laser beam 7a during bath contact (Fig. 2b).
.

As can be seen from the above explanation, in the conventional method, in order to eliminate the end plate 8 of the preceding metal plates 1 and 2,
In order to prevent the adverse effects of 0.11 during welding, it is necessary to move the leading metal plate 1 or the trailing metal plate 2 in the horizontal direction, which not only takes a very long time from the time of fusing to the time of welding. It was not possible to connect two metal plates 1.2 continuously by welding in a moving state. Furthermore, it is necessary to change the irradiation direction of the laser beam 7a as shown in 7b, which causes problems in terms of accuracy.
It was very difficult to make high quality welds.

[Summary of the invention]

This invention eliminates the above-mentioned conventional drawbacks,
When joining two metal plates, among these metal plates,
The vicinity of the tail end of the leading metal plate and the vicinity of the tip of the trailing metal plate are stacked parallel to each other with a certain distance apart, and these two are clamped.
With a beam shielding plate placed between two metal plates, beams with a high energy density M are irradiated at the same time from diagonally above and diagonally below the overlapped portion of these metal plates while maintaining a constant angle. As a result, these two metal plates are cut in a straight line at the same time, and after removing the beam shielding plate and the end plate resulting from this cutting, the above-mentioned 2.
The two metal plates are moved relative to each other in the vertical direction so that they are located on the same plane and brought into close contact with each other, and then the two beams are irradiated from the same position as when cutting to join the two metal plates together. By doing this, it is possible to not only weld two relatively thick metal plates quickly and with high quality, but also to join metal plates that can be continuously welded even in a moving state (non-stop state). The present invention provides a method.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to FIG.

In FIG. 86, the same reference numerals as in FIG. 1 or 2 indicate the same or corresponding parts. 3.4 is the main clamp; 5.
6 is the auxiliary clamp, these clamps 3, 4, 5
．． 6, the leading metal plate 1 and the trailing metal plate 2 are clamped so as to overlap in parallel with each other at a certain distance. Reference numeral 12 designates a beam shielding plate arranged between these metal plates 1.2 (FIG. 6a).

Next, laser beams 7a, 7a' are simultaneously applied from the upper diagonal direction and the lower diagonal direction of the metal plates 1, 2 while maintaining a constant angle.
is irradiated to cut the two metal plates 1.2 in a straight line at the same time. The above laser beam 7a.

7 a / can be formed by two independent beams or by dividing one beam (Fig. 6b).

After moving the beam shielding plate 12, the end plate 8 of the leading metal plate 1 is moved downward from between the metal plates 1 and 2 clamped in parallel to the trailing metal plate 2, and the end plate 8 of the trailing metal plate 2 is moved downward from between the parallel clamped metal plates 1 and 2. 9 is mechanically removed downward (FIG. 6C). After that, of the two metal plates 1 and 2, the leading metal plate 1 is moved downward and the trailing metal plate 2 is moved the same distance upward, and these metal plates 1 and 2 are aligned on the same plane. and completely adhere to each other (Fig. 3d). After that, the laser beam 7b,
7b' is irradiated from the top and bottom of the same position as when cutting. As a result, the two metal plates 1.degree. 2 are completely connected to each other by welding (FIG. 6e). Same, two metal plates 1
, 2 and the laser beams 7a, 7a',
Regarding the irradiation angles 7b and 7b', it is necessary to consider the thickness of the metal plate 1.2.

FIG. 4 shows another embodiment in which continuous welding can be performed even in a moving state (non-stop state). In this figure, the same reference numerals as in FIGS. 1 to 6 indicate the same or corresponding parts.

Reference numeral 15 indicates a welding machine main body, and the welding machine main body moves at the same speed together with the leading metal plate 1 and the trailing metal plate 2, which are clamped by the respective clamps 3.4 and 5.6, while proceeding at the same speed.
By quickly following the process described in the diagram,
Can perform non-stop welding. Similarly, in this case, the laser beams 7a, 7a' (7b, 7b')
is an oscillator 13a installed separately.

13b via reflecting mirrors 14a and 14b.

〔Effect of the invention〕

As mentioned above, when joining two metal plates, this light separates the vicinity of the tail end of the leading metal plate and the vicinity of the tip of the trailing metal plate by a certain distance. The two metal plates are clamped parallel to each other, and a beam shielding plate is placed between the two metal plates, and a beam with high energy density is simultaneously generated from above and below the metal plates at a constant angle. is irradiated with the beam, thereby simultaneously cutting these two metal plates in a straight line, and after removing the beam shielding plate and the end plate resulting from this cutting, the two metal plates are located on the same plane. The two metal plates were moved relative to each other in the vertical direction to bring them into close contact with each other, and then the two beams were irradiated from the same position as when cutting to join the two metal plates together. Since the adverse effects of the welding gap can be prevented without horizontally moving the two metal plates that reduce the target thickness, welding can be performed quickly and with high quality.

[Brief explanation of drawings]

1 and 2 are configuration diagrams for explaining a conventional joining method, FIG. 6 is a configuration diagram for explaining one embodiment of the present invention, and FIG. 4 is a configuration diagram for explaining another embodiment. It is a diagram. 1: Leading metal plate, 2: Trailing metal plate, 6.4: Main clamp, 5, 6: Auxiliary clamp, 7m, 7a'. 7b, 7b': Laser beam, 8, 9: End plate, 12
:Shield. The same symbols in each ward shall indicate the same or corresponding parts. Agent Masuo Oiwa Figure 1 Figure 2

Claims (3)

[Claims] (1) A state in which the vicinity of the tail end of the leading metal plate and the vicinity of the tip of the trailing metal plate are stacked and clamped in parallel with a certain distance apart, and a beam shielding plate is placed between these two metal plates. Then, beams with high energy density are simultaneously irradiated from above and below the overlapping portion of these metal plates at a certain angle, thereby simultaneously aligning these two metal plates in a straight line. After removing the beam shielding plate and the end plate resulting from this cutting,
The two metal plates are brought into close contact with each other by moving them in the vertical direction so that they are located on the same plane, and then the two metal plates are irradiated with the two beams from the same position as when cutting. A method for joining metal plates, which comprises joining together metal plates. (2) The metal plate according to claim 1, characterized in that even when the two metal plates are in a moving state, cutting, end plate removal, plane alignment, and joining can be performed continuously. Joining method. (3) The method for joining metal plates according to claim 1, wherein a laser beam is used as the beam having high energy density.