JPS6138070B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a vehicle body conveying device suitable for small-volume production such as knockdown of vehicles.

The body structure of an automobile (four-wheeled vehicle) consists of a floor, roof, left and right rear/front and center side panels, front/rear bulkheads, dash board, front/rear and left and right wheel houses, bonnet, doors, etc. . Although there are slight differences in the order of assembly of these parts, in each case, the necessary parts are partially welded on a small assembly line, and in the final process they are positioned approximately in the shape of the vehicle to form the four-wheeled vehicle body, and dimensional accuracy is ensured. After taking it out, temporary welding is performed, and then final welding is performed to obtain a white body.

From the standpoint of mass production, this assembly is divided into two processes: floor complete and roof complete, and assembly equipment is also installed for each process, making mass production a reality.

By the way, even in low-volume production such as knock-down, the above-mentioned mass-produced assembly method is followed; therefore, in the case of low-volume production, assembly equipment and equipment are relatively expensive, require a large space, and each process requires a small number of people to assemble. The current situation is that workers have to move between processes, making it impossible to save labor, and as a result of the above, vehicle prices are relatively high, making it difficult to reduce costs. There is a need for improvement in this area.

The inventors of the present invention have devised the present invention in view of the above-mentioned problems in small-volume production and assembly of vehicles such as knock-down vehicles.

The purpose of the present invention is to assemble a vehicle body in one step without dividing it into two steps, improve work efficiency, simplify equipment and equipment, save labor, and further simplify the structure of the assembly device. Furthermore, it is an object of the present invention to provide a vehicle body assembly and conveyance device that streamlines conveyance, is suitable for small-scale production such as knockdown, and is capable of reducing costs.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a side view of the device according to the present invention, and FIG.
The figure shows the same plan view, and 2 is a base supported on the floor 1 by legs 2a, etc., and pins 3 are set up at predetermined positions on the base 2 via the base 3a. ... are provided at specific positions depending on the vehicle model so as to fit and lock into drain holes provided in the front, center, and rear floor panels _W1 .

Pillars 4, 4 are erected on the left and right of the front end of the base 2, and struts 5, 5 are erected on the left and right of the rear end of the base 2, respectively.
The front struts 4, 4 are provided so as to extend vertically through the engine compartment at the front of the vehicle body. Each pillar 4,4
And on one side of the upper part of 5, 5 is a clamper 4 that can be opened and closed freely.
a, 5a, and engaging portions 4b, 5b are formed at the upper end. Further, support stems 6, 6 are erected on the front ends in front of the columns 4, 4 of the base 2, and the stems 6, 6
A swing type clamp 6a is provided at the upper end, and a push-out type clamp 6b is provided at the middle portion.

A push-out clamp 5c is provided in the middle of the rear support column 5.

A rail 7 is laid on the base 2, and an assembly frame 9 is suspended from the rail 7 via a rolling lifter 8 and a hook 8a so as to be transportable. A main body 9a consisting of left and right members 9b, 9b and cross members 9c, 9c extending from the main body 9a, and a planar X-shaped hanging member 9d provided on the main body 9a and suspended by a hook 8a.
The left and right members 9b, 9b of the main body 9a are made up of left and right extended members 9e, 9e, 9f, and 9f that extend obliquely from the front and rear lower portions of the main body 9a to the front and lower sides and the rear and lower sides, and these members are made of channel materials, angle materials, and boxes. It is formed of a rectangular tube member, a cylindrical member, etc. with a shaped cross section, and is integrated by welding or the like. Engagement portions 9g, 9h, 9h are fixed to the front end portions of the extending members 9e, 9e and 9f, 9f extending downward in the front and back, respectively. cross member 9i
Also, the rear engaging parts 9h, 9h are connected to the cross member 9.
Each is connected by j, increasing rigidity. This main body 9
To the left and right members 9b forming the left and right members 9b, hangers 10 are attached to the front and back, and a plurality of clampers 11 are attached so as to be able to slide along the members and adjust the positioning, and a member 9e that extends in the front and rear direction is attached. ,9e,
Clampers 11... are similarly attached to 9f, 9f, and the clampers 4a, 5a, 11... are those shown in FIGS. 3 to 5, for example, and the toggle clamps in FIG. FIG. 5 shows a variclamp.

In the above, floor panel W ₁ , front side panel W ₂ , side panel W ₃ , rear panel
W ₄ , roof panel W ₅ , front panel W ₆ etc. are assembled temporarily in advance, and floor panel W ₁ is attached to the front,
Place the main body and rear parts on the base 2 using pins 3 and position them. The front panel W ₆ and the rear panel W ₄ are the clamps 6a and 6b of the stem 6,
Clamp it with the clamp 5c of the post 5 and place the front and main body side panels W ₂ and W ₃ on the sides. The assembly frame 9 is supported by the rails 7 and transported onto the base 2, and the engaging portions 9g, 9g provided on the front, rear, left, and right sides are fitted into the engaging portions 4b, 5b of the columns 4, 5. The frame is positioned, and the engaging portions 9g, 9h are positioned and held at predetermined positions on the base 2 by the clampers 4a, 5b. This frame 9
Before installing the roof panel W ₅ , attach the side panel
W ₃ , rear panel W ₄ and side panel W ₂ and W ₃ , rear panel W ₄ and side panel
Clamps 11 hold the joints of W ₃ , side panel W ₃ , rear panel W ₄ and roof panel W ₅ to temporarily hold the vehicle body as a whole. For example, the joints can be held by clamps as shown in FIGS. 7, 8, and 9.
As shown in the figure, Figure 6 shows the floor panel.
Insert and hold the head 3b of the pin 3 into the drain hole _W7 of _W1 ,
Position each panel with a flange at the joint W ₈
is provided and held by the clamp 11 or pressed.

In this way, the sub-assembled panels constituting the vehicle body are held on one base 2 via the frame 9 in a temporarily assembled state, and the joints are then temporarily joined by welding.
This temporary welding should be done to the extent that each part will not come apart.

After temporary welding, the clampers 4a, 5a are released, and the engaging parts 9g, 9h on the frame 9 side are connected to the struts 4, 9h.
5, hook the hanger 10 onto the edge of the temporarily welded window frame W ₉ of the vehicle body W, and lift the frame 9 using the lifter 8 via the hook 8a. 5c
Release it, and insert pin 3 into the drain hole of floor panel W ₁ ...
Since only the parts are fitted together, the car body W is detached from the base 2, lifted up by the frame 9, and transported to the next process, where main welding is performed to obtain a white body.

Although the illustrated embodiment has been described above, any clamping means may be used, and the point is that the frame may be supported on a base and each part may be temporarily welded together.

As is clear from the above, according to the present invention, each member of the vehicle body can be temporarily welded in one step, and unlike the conventional method, two steps are not required. Therefore, there is no need for workers to move between steps, and the work It improves efficiency, makes work easier, and saves labor. Also, since assembly is concentrated in one place, it is good for space utilization. It requires a minimum number of devices and equipment, and the device is simple in structure and easy to handle. It is easy to reduce costs and streamline production in small quantities such as knockdown. Also, since the frame doubles as a transport device, it is possible to move to the next process with one device while continuing the work.
It has many advantages such as simplification of equipment, rationalization of equipment, and improvement of work efficiency.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic side view of the device, Fig. 2 is a plan view thereof, Figs. 3 to 5 are views showing an example of a gripping means, and Fig. 6 9 to 9 are explanatory diagrams of each part in a member positioning and gripping state. In the drawing, 2 is the base, 3 is the positioning pin, 4,
5 is a support, 8 is a conveyance means, 9 is a frame, and 11 is a gripping means.

Claims (1)

[Claims] 1. A base including a plurality of upright positioning pins that fit into water drain holes in the floor of the vehicle body, and a plurality of columns that stand up in the longitudinal direction of the vehicle body, and a base provided in the longitudinal direction of the upper part of the roof of the vehicle body, An assembly frame in which an upper end and an end thereof are removably positioned and fixed, a plurality of gripping means provided on the frame for gripping each vehicle body member, and a hanger provided on the frame for suspending and transporting the vehicle body. and a means for lifting and transporting the frame.