JPS63174786A - Method for assembling engine compartment - Google Patents

Abstract

PURPOSE:To simplify work and to facilitate controlling a welding means by conveying a work sideways with respect to the longitudinal direction of an assembly line and welding panel materials to the work by the welding means provided to the side part of the line. CONSTITUTION:The panel material A-D to constitute an engine compartment are integrated on two stages 41 and 42 in front of a carrying-in stage 31 of a first line and then, conveyed sideways with respect to the longitudinal direction of the assembly line to perform the assembling welding robots 50-54 provided to the side parts of respective stages. By this method, the line can be simplified and the maintenance of a device is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an engine compartment assembly method for assembling an engine compartment constituting an automobile body.

(ylL-L/l) The assembly process of an automobile body consists of a floor main process and a main body assembly process, as described in Automobile Engineering Complete Book Volume 19 "Automobile Manufacturing Method" published by Sankaido, page 179. process and
It has a metal line process. The floor main process is the process of assembling the engine compartment and the front floor carrier floor together.As shown in Figure 3, the engine compartment consists of a radiator core support (Radicore) A, left and right hood ridges B, and a dartboard lower C. It is mainly composed of the Datsushiro Cross D and the Datsushiroacross D.

Therefore, in the engine compartment process as a preliminary stage to the floor main process, the above-mentioned panel A
-D are being transported and assembled one after another. A conventional floor main line for assembling panels such as engine compartments is shown in Japanese Patent Laid-Open No. 59-82178, and a conventional engine compartment assembly line is shown in FIG.

As shown in Fig. 4, the conventional engine compartment assembly line has nine stages indicated by symbols 1 to 9. Shuttle par 1 through
0 is set.

The first stage 1 is a stage in which the left and right hood ridges B are brought in together, and the second stage 2 is a stage in which the left and right hood ridges B are brought in together. The third stage 3 is a stage for assembling the radio core A conveyed by the loader 12, and the fifth stage 5 is a stage for assembling the Dayutsu lower C conveyed by the loader 13. . Stages 4.6 and 7 are stages in which a so-called ceiling-suspended robot 14 suspended from the ceiling is used to perform additional strikes on the workpieces temporarily struck in stages 2.3 and 6. It is. Furthermore, stage 8 is an idle stage, and stage 9 is an unloading stage.

In such a conventional engine compartment assembly line, as in the case of the floor main line shown in the above-mentioned publication, as shown in Figs. It is being transported facing the direction of travel.

(Problems to be Solved by the Invention) However, in the above-mentioned engine compartment line, since the automobile body is transported with the vehicle body facing the direction of travel, there are the following problems.

As shown in Fig. 3, the parts of the engine compartment that will be increased are mainly the areas indicated by the mark @S in the figure;
In other words, as shown by X in FIG. It got in the way and made welding work difficult.

For this reason, as shown in FIGS. 4 and 5 (A>(B)), it was necessary to perform additional striking work using the ceiling-suspended robot 14.

If a ceiling-mounted robot is used as shown in FIGS. 5A and 5B, a large robot stand 14a is required, which not only increases equipment costs but also makes it difficult to make the device more versatile.

The present invention has been made in view of the problems of the prior art described above, and it is an object of the present invention to make it possible to install welding means on the floor at the side of the line, thereby making the assembly work of engine compartments more versatile.

(Means for Solving the Problems) To achieve the above object, the present invention includes a stage for temporarily bonding a plurality of panel materials constituting an engine compartment together by welding means, and a stage for temporarily bonding the temporarily bonded panel materials together. In the longitudinal direction of the engine compartment assembly line, the engine compartment assembly line has stages that are further increased by welding means.
In the assembly method in which the panel materials are sequentially conveyed and the engine compartment is assembled, the engine compartment work constituted by the panel materials is conveyed transversely to the longitudinal direction of the assembly line, and the workpiece is conveyed to the side of the line. A method for assembling an engine compartment, characterized in that the panel members can be welded to each other by installed welding means.

(Function) When the engine compartment, which is a workpiece consisting of multiple panel materials, is transported on the engine compartment assembly line with its longitudinal direction facing sideways to the line, a spot welding machine or welding robot is installed on the side of the line. Since the welding work can be performed using the welding means installed on the floor, the welding work becomes easier, the production efficiency of the engine compartment is improved, and the maintenance of the welding means becomes easier.

(Example) Hereinafter, a description will be given based on an example of the present invention shown in the drawings. FIG. 1 is a diagram showing an assembly apparatus embodying the method for assembling an engine compartment of the present invention, and parts common to those in the conventional assembly apparatus shown in FIG. 4 are given the same reference numerals.

The illustrated apparatus includes a first line 21 in which vehicles are assembled while sequentially transporting works by a first shuttleper 20;
A second line installed perpendicularly to this first line 21
It consists of a second line 23 having a shuttlecock 22.

The first line 21 has eight stages indicated by numerals 31 to 38, and the M2 line 23 is the first stage of the first line.
The stage 31 and the two assemblies on each side thereof have stages 41, 42. Stages 41 and 42 of these assemblies are stages in which the radio core A and the Daniloa cross D are integrated into the hood ridge B, and workpieces of different vehicle types or vehicle frames are assembled into one body. For convenience, the assembly stage 47 is assumed to be a workpiece of a vehicle of a certain car type or chassis, that is, car A, and the assembly stage 42 is a work of another vehicle type or chassis of vehicle B. shall be assembled.

Each assembly is stage 41 and 42 with radio core A@
Loader 25 for transportation and darts lower cross D
A loader 26 is provided for conveying. In addition, for each assembly stage 41, 42 is provided with spot welding means (not shown) for temporary welding, and the above-mentioned panel materials are integrated with each other. From stages 41 and 42, each assembly is based on the car body production plan.
The second shuttleper 22 transports the work from one assembly stage to the carry-in stage 31 of the first line 21 .

As shown in the figure, the posture of the workpiece conveyed by the shuttleper 23 is set to face the traveling direction of the vehicle body on the second line. Therefore, the first line 2
The work carried in from the carry-in stage 31 in the first line 21 is carried in a posture facing sideways with respect to the traveling direction of the vehicle body.

The stage 32 of the 15th in 21 is a stage in which the hood ridge B, lower cross D, and radio core A, which are integrated at the stage 41 or 42, are assembled by additional hammering to increase the strength. Welding robots 50 and 51 as welding means are installed on the left and right sides of the shuttleper 20.

The third stage 33 is also an additional welding stage, and another welding robot 52 is installed here as well. The fourth stage 34 of the first line 21 is a stage for assembling the darts lower C shown in FIG. 3 on top of the work that has been transported up to this point. A loader 27 is installed for this purpose.

The fifth and sixth stages 35 and 36 of the first line 21 are stages for increasing welding, and welding robots 53 and 54 are installed adjacent to and beside the shuttleper 20. The seventh stage 37 is an idle stage, and the eighth stage 38 is an unloading stage.

As mentioned above, the welding robots 50 to 54 can be installed next to the shuttleper 20 because the welding robots 50 to 54 can be installed next to the shuttleper 20 when the welding robots 50 to 54 are placed horizontally to the direction of travel of the vehicle, as shown in the figure, where the workpiece is an automobile body. This is because the vehicle is being transported in such a way that it is moving towards the target. That is, especially on the line for assembling the engine compartment, spot welding points are concentrated at the front and rear of the vehicle body, as shown by 81 in Figure 3 and by X in Figure M2. If the car body is transported sideways, the welding point position will be located on the line side of the first line 21, and even if the welding robots 50 to 54 are installed on the line side, the welding robot will not be able to handle the transport of the car body. Spot welding work can be performed using a floor-standing welding robot installed on the floor without using a conventional ceiling-mounted welding robot.

Further, the illustrated assembly line is composed of a first line 21 and a second line 23 facing perpendicularly to the first line 21,
It is generally arranged in a cross shape, and the main panels that make up the engine compartment are integrated in two stages 41 and 42 in front of the loading stage 31 of the 15th inn 21. When changing, while operating the negative stages 41 and 42,
It is possible to exchange jigs on the other stage, and the line can be used effectively not only for parallel production of multiple car models but also for the production balance of two car models A and B.
Line versatility can be achieved.

(Effects of the Invention) As described above, according to the present invention, the work of the engine compartment composed of panel materials is transported transversely with respect to the longitudinal direction of the assembly line, and the welding Since the above-mentioned panel materials can be welded to each other by means of the above-mentioned means, it is possible to install a floor-standing welding means on the line side without using a ceiling-mounted robot as in the past, making welding work easier. At the same time, maintenance of welding means, etc. became easier, and the efficiency of engine compartment production was improved.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an assembly device embodying the method for assembling an engine compartment of the present invention, FIG. 2 is an enlarged plan view showing one stage in FIG. 1, and FIG. FIG. 4 is a plan view showing a conventional engine compartment assembly device, and FIG. 5 (A> is an enlarged view of one stage in FIG. 4). Plan view, FIG. 5(B) is a front view of the same figure (A>. 20... Shuttle bar, 21... 1st line (assembly line of automobile body), 3
1-38... Stage, 50-54... Welding robot (welding means), A-D... Panel material (work that constitutes the engine compartment). Patent applicant Nissan Motor Co., Ltd. Figure 5 (A) (B)

Claims (1)

[Claims] Longitudinal direction of an engine compartment assembly line having a stage for temporarily welding together a plurality of panel materials constituting the engine compartment by welding means, and a stage for further welding the temporarily joined panel materials together by welding means. In the assembling method in which the engine compartment is assembled by sequentially transporting the panel materials, the engine compartment workpiece constituted by the panel materials is transported transversely to the longitudinal direction of the assembly line, and A method for assembling an engine compartment, characterized in that the panel members are welded to each other by welding means installed on the sides of the engine compartment.