JPH036032B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an apparatus for assembling automobile bodies of a plurality of car types and types on one assembly line.

<Prior Art> Parallel production type automobile assembly equipment is used to assemble multiple car models on one assembly line. As shown in FIG. 4, this conventional device is provided with a swinging frame 2 on both sides of which the underbody base 1 supporting the underbody WU is in the center, which changes its posture horizontally and vertically. This is a configuration in which side member holding jigs 3a and 3b for supporting side member WS to be assembled to WU are switchably provided.

<Problems to be Solved by the Invention> In the conventional device described above, the side member holding jigs 3a, 3 that are switchably provided on the swing frame 2 are
The limit for b is parallel production for two to three vehicle models. Therefore, when producing three or more types of vehicles or responding to model changes, it is necessary to change the holding jig for the side member for the swing frame each time, which affects the improvement of production efficiency.

<Means for Solving the Problems> The present invention solves the above conventional problems, and has a structure in which the underbody base is placed in the center and guide bases installed on both sides of the underbody base are placed in the center. A slide truck that moves forward and backward in the horizontal direction with respect to the base, a swinging frame that is pivotally supported on the slide truck so that its posture can be changed horizontally and vertically and is equipped with a guide rail and a positioning clamp device, and a side member holding device. a jig trolley, which includes a tool and wheels guided by the guide rail, and is detachable and replaceable from the swinging frame, and is installed on the guide base at the rearward end position of the slide trolley;
and a mount for transporting the jig cart, which is equipped with a guide rail for guiding the wheels of the jig cart.

<Function> In the present invention, a plurality of jig carts equipped with side member holders corresponding to each vehicle type are prepared in advance, and the jig carts are carried onto and taken out from the mount by a conveyor, and the jig carts are moved between the mount and the swing frame. The jig cart is transferred, and the jig cart set on the swinging frame is fixed to the swinging frame by a positioning clamp device.

<Example> An example of the present invention will be described below based on FIGS. 1 and 3. In FIG. 1, 1 is an underbody base such as a transfer that supports and transports the underbody WU. Reference numeral 4 denotes a guide base extending in a direction perpendicular to the moving direction of the underbody base 1, and a guide rail 5 is provided on the upper surface of the guide base 4, and the guide base 4 moves forward and backward with respect to the underbody base 1. A slide cart 6 is guided. Reference numeral 17 denotes a cylinder for moving the slide truck 6 forward and backward.

A swing frame 7 is supported by a pivot shaft 10 on the slide truck 6 so as to be able to change its position horizontally and vertically. Reference numeral 11 denotes a cylinder for changing the attitude of the swing frame 7.

The swing frame 7 is provided with a jig cart 12 which will be described later.
A guide rail 8 for guiding and a positioning clamp device 9 are provided. Said guide rail 8
In the vertical posture of the swing frame 7,
The positioning clamp device 9 is provided on the upper and lower surfaces of the swing frame 7 in a direction perpendicular to the advancing and retreating direction of the slide truck 6, and the positioning clamp device 9 is provided on a side surface other than the mounting surface of the guide rail 8.

12 is a jig cart. This jig cart 12 is
Guide rails 8 of the swing plate 7 are provided on both sides thereof.
It is equipped with wheels 13 guided by the wheels 13 and a holding jig 14 for the side member WS. Therefore, this jig cart 12 is guided on the swing frame 7 by the guide rail 8, and is removably fixed by the positioning clamp device 9.

Reference numeral 15 denotes a frame, which is installed on the guide base 4 at the rearward end position of the slide truck 6. A guide rail 16 is provided on this pedestal 15 and corresponds to the guide rail 8 of the swing frame 7 when the swing frame 7 is in a horizontal position.The jig cart 12 is guided on this guide rail 16. It is becoming more and more common.

Next, the operation of the present invention will be explained with reference to FIG.

In Fig. 2A, the jig cart 12 is received from the pedestal 15 onto the swinging frame 7 in a horizontal position, is fixed by the positioning clamp device 9, and is waiting at the loading position for the side member WS to be loaded from above. state. At this standby position, the side member WS is carried from above onto the jig cart 12 as shown in FIG. 2B, and is clamped by the holding jig 14 (see FIG. 1). Next, as shown in FIG. 2C, the posture of the swing arm 7 is changed in the vertical direction by the cylinder 11. As a result, the posture of the side member WS held by the jig cart 12 is set in the vertical direction. Next, the slide truck 6 is moved forward by the cylinder 17 as shown in FIG. Thereafter, the holding jig 14 is unclamped, the slide cart 6 is moved backward to the loading position of the side member WS, as shown in FIG.
Change the posture horizontally as shown in Figure F, and wait for the next side member WS to be brought in for assembly.

If you want to change the car model to be assembled next,
A replacement operation is performed with a jig cart 12 equipped with a holding jig 14 corresponding to the vehicle type. That is, the previous jig cart 12 on the swing frame 7 is returned to the pedestal 15 and replaced with another jig cart 12.

For example, as shown in FIG. 3, if 19 is an assembly line, 18 is an assembly position, and 15 is a pedestal, the jig cart 12a is for car A, and the jig cart 12a is for car b. Jig cart 12b, jig cart 12c for car c, and jig cart 12d for car d.
Jig carts for vehicle types are prepared, and the jig carts 12a to 12d for four vehicle types are moved forward and backward in a rectangular path by a conveyor with respect to the mount 15, and the jig carts for the vehicle types necessary for assembly are replaced.

<Effects of the Invention> As described above, according to the present invention, a holding jig for holding a side member is provided on a movable jig cart, and a plurality of jig carts each having a holding jig corresponding to each vehicle type are provided. The structure is such that the necessary jig carts are removably fixed to the slide cart on a swinging frame that can change its position horizontally and vertically, making it suitable for various vehicle models. Prepare multiple jig carts equipped with holding jigs,
By replacing this with a swinging frame as necessary, it becomes possible to produce four or more models in parallel.
In addition, since model changes, maintenance, and response to jig piece failures can be done outside the line, there is no need to stop the line, setup changes can be completed in a short time, and assembly production efficiency is significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a side view of the main parts of the present invention, Fig. 2 is an explanatory diagram of the operation of the present invention, Fig. 3 is an explanatory diagram of the procedure for replacing and moving the jig cart used in the present invention, and Fig. 4 is a diagram of the conventional device. FIG. 1... Underbody base, 4... Guide base, 6... Slide trolley, 7... Swing frame,
8...Guide rail, 9...Positioning clamp device, 12...Jig cart, 13...Wheel, 14...
Holding jig, 15... mount, 16... guide rail.

Claims (1)

[Claims] 1 A slide truck that moves horizontally forward and backward with respect to the underbody base on guide bases installed on both sides of the underbody base, and a pivot support on the slide truck that allows the attitude to be changed horizontally and vertically. a swinging frame including a guide rail and a positioning clamp device, a side member holding jig and wheels guided by the guide rail, and a jig cart that is detachable and replaceable from the swinging frame; An automobile body assembly device comprising: a mount for transporting a jig trolley, which is installed on the guide base at the rearward end position of the slide trolley, and is provided with a guide rail for guiding the wheels of the jig trolley.