JPS62168765A - Body assembling device for automobile - Google Patents

Abstract

PURPOSE:To prevent a suspension hanger from interference with a drop lifter by supplying a cab side from above to an under body of a car body transferred by the suspension hanger with the drop lifter to unite the car side and the under body into one body and enabling a rail for the suspension hanger to retreat. CONSTITUTION:An under body 1A of a car body is transferred and supplied to a working station S by an overhead conveyer 2 according to a suspension hanger system, and left and right cab sides 1B are transferred and supplied from above (the upper story) by a drop lifter 3. The conveyer 2 has an arch type suspension hanger 6 which is suspended on the upper end roller portion 6a rotatably from a rail 7 for the suspension hanger. In this case, the rail 7 has the rail portion 7a, within the range of interfering with the drop lifter 3, supported by a slide bracket 28 provided slidably laterally on a slide base 29 to retreat sidewise in incorporating the cab side 1B.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an automobile body assembly apparatus.

(Prior art) Conventionally, when assembling an automobile body, when joining the underbody and cab side together, the underbody is generally received and transported from below by a shuttle, and the cab side is welded to this underbody. I try to do that.

°However, if a transport rail for the shuttle is installed at the bottom of the transport, the installation and operating range of welding robots, etc. are restricted, and the long arm of the welding robot installed on the side is required to perform work. In this case, the operating range of this arm becomes wide, and there is a problem in that a wide area is required to prevent interference.

Therefore, by using a small number of welding robots in a narrow space,
In order to integrate the underbody and the cab side, it is preferable to change the transportation of the underbody from a conveyor belt to a hanging hanger system. By adopting this hanging hanger method, there is no conveyor rail on the floor, which increases the flexibility in installing the welding robot.
This allows the distance between work stations to be freely set.

In addition, if the underbody is transported by a shuttle (-), it will be transported to the next work station at predetermined intervals due to the relationship with other work stations, and the cab side will be joined to this underbody. When the work requires a long working time, the work must be divided into multiple work stations, which requires a large work space and is large-scale. However, when using the hanging hanger method as mentioned above, Since the work time is longer, the underbody and cab side can be worked together at one station, which means that the work space can be reduced to a smaller scale.

Therefore, when both the underbody and the cab side are conveyed by being supported from above, there is a problem in that the conveying means for both interfere with each other.

(Object of the Invention) In view of the above-mentioned circumstances, an object of the present invention is to provide an automobile body assembly device that allows an underbody and a cab side to be assembled at one work station.

(Structure of the Invention) The vehicle body assembly device of the present invention supplies the underbody using a hanging hanger method to a work station that joins and integrates the underbody and the cab side, and supplies the cab side from above using a drop lifter. This work station is characterized in that the hanging hanger rail can be slid by a sliding mechanism to a position where it does not interfere with the drop lifter.

(Effects of the Invention) According to the present invention, the suspension bunker rail that supplies the underbody at the work station that joins and integrates the underbody and the cab side is positioned so that it does not interfere with the drop lifter that supplies the cab side using a sliding mechanism. By making it possible to slide to the top, the underbody can be supplied using a hanging hanger method, and the cab side can be supplied from above using a drop lifter, and the underbody and cab side can be integrated in a narrow space and with fewer welding robots. It can be carried out. By adopting the hanging hanger method, there are no conveyor rails on the floor, which increases the flexibility of installing the welding robot, and the distance between work stations can be freely set, allowing longer working hours. The work of integrating the cab side and the cab side can be done at one station, and the pickling space can also be made smaller.

(Example) The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic diagram of a work station for integrating an underbody and a cab side in a vehicle body assembly apparatus.

An underbody 1A constituting the bottom of the vehicle body is conveyed and supplied to this work station S by an overhead conveyor 2 using a hanging hanger method. On the other hand, the left and right cab sides 1B forming both sides of the vehicle body are transported and supplied from above (second floor) by a drop lifter 3. Further, in this work station S, an underbody support mechanism 4 for receiving the underbody 1A is installed at the center of the floor, and cab side support mechanisms 5 for receiving the cab side 1B are installed on both sides thereof.

The overhead conveyor 2 has an underbody 1A.
A hanging hanger rail 7, which suspends and supports the upper end roller portion 6a of the hanging hanger 6, is installed along the upper part of the conveyance line. The hanging hanger 6 supports the lower portions of the underbody 1Δ on both sides via jigs 8 on both sides of the lower end.

On the other hand, the underbody support structure 4 includes an elevating frame 10 provided with a jig 9 on the upper part for supporting a predetermined portion of the underbody 1A, and the elevating frame 10 is moved up and down by an elevating mechanism 11. The lifting frame 10 is
When the underbody 1A is carried in or out, it operates downward to allow the movement of the underbody 1A by the overhead conveyor 2, and when it receives the underbody 1A carried in, it operates upward to lift and transfer the underbody 1A from the hanging hanger 6. It is something.

Further, the drop lifter 3 is provided with carriers 13 on both sides that support the left and right cab sides 1B, and the carriers 13 are suspended so that the upper rollers 14 can run on the rails 15. The lifting rail 15a corresponding to the work station S is supported by a lifting member 17 via a bracket 16, and the lifting member 17 is movable up and down by a lift Rm (not shown) along a guide member 18 extending in the vertical direction. It is being

In the drop lifter 3, the carrier 13 holding the cab side 1B is attached to the lifting rail 15 above the work station S.
When the position a is reached, the elevating member 17 is lowered along the guide member 18, and the left and right cab sides 1B are transferred to the slide frames 20 on both sides of the cab side support mechanism 5. As shown in FIG. 3, this slide frame 20 is placed on guide bars 22 installed on bases 21 on both sides of the underbody support mechanism 4, and supports the underbody by operating a telescopic cylinder 23. It moves toward and away from the mechanism 4. Further, the slide frame 20 includes a jig 24 for receiving a predetermined portion of the cab side 1B lowered by the drop lifter 3, and a lift arm 25 that slightly lifts the cab side 1B, and the lift arm 25 is rotated. A lift cylinder 26 is provided.

The hanging hanger rail 7 of the overhead conveyor 2 has a rail portion 7a that interferes with the cab side 1B and the drop lifter 3 that move up and down above the work station S, and a slide bracket 28.
The slide bracket 28 is supported in a horizontally slidable manner by a slide base 29, and is moved by a slide mechanism (not shown) built into the slide base 29. The hanging hanger rail 7a of this movable portion is provided so as to slide to a retracted position where it does not interfere with the cab side 1B and the drop lifter 3 which move up and down.

Next, to explain the operation of the above structure, first, as shown in FIG. 1, the underbody 1A is carried into the work station S by the hanging hanger 6 of the overhead conveyor 2. In that case, hanger rail 7
The movable portion 7a has moved to the forward position so as to be continuous with the other portions.

The carried-in underbody 1A is received by the elevating frame 10 of the underbody support mechanism 4 which has been raised, and the hanging hanger 6 is moved to a position away from the underbody 1A. Thereafter, the slide bracket 28 is moved backward, and the movable portion 7a of the hanging hanger rail 7 is moved to a retracted position where it does not interfere with the drop lifter 3 (see FIG. 2).

Subsequently, the elevating member 17 of the drop lifter 3 is moved downward together with the carrier 13 holding the cab side support 1B, and the slide frame 20 is moved against the cab side support 1 structure 5.
Place the cab side 1B on the jig 24. and,
This slide frame 20 is moved backward to remove the carrier 13.
from the cab side 1B, and then remove the carrier 13 from above.
move upward.

Next, the slide frame 20 is moved forward to bring the cab side 1B closer to the underbody 1A placed on the underbody support mechanism 4, and
Lift up the cab side 1B with the lifted lift arm 25, and then lift the underbody 1A and cab side 1.
B and B in a predetermined positional relationship, and each part of both is integrally joined by welding.

The carrier 13 of the drop lifter 3 that has carried in the cab side 1B and has been moved upward is transferred when the rail 15 becomes continuous, and the carrier 13 holding the next cab side 1B is moved to a predetermined position. Further, when the drop lifter 3 rises, the movable portion 7a of the hanging hanger rail 7 of the overhead conveyor 2 is made to continue with the rail 7 by the forward movement of the slide bracket 28.

Underbody 1A and cab side 1 as described above.
After the underbody 1A has been integrated with the underbody 1A and the predetermined work has been completed, the hanging hanger 6 of the overhead conveyor 2 is moved below it again, and then the lifting frame 10 of the underbody support mechanism 4 is lowered. , the underbody 1A integrated with the cab side 1B is transferred to the hanging hanger 6 and transported to the next work station.

The operating mechanisms and specific structures of the moving parts of the overhead conveyor 2, drop lifter 3, underbody support mechanism 4, and cab side support mechanism 5 are as follows:
Known mechanisms and structures are adopted as appropriate, and the underbody 1A
The design is changed depending on the shape of the cab side 1B, etc.

[Brief explanation of drawings]

FIG. 1 is a schematic front view of a vehicle body assembly apparatus in a state in which an underbody is supplied to a work station according to an embodiment of the present invention, and FIG. 2 is a schematic front view of the same in a state in which a cab side is supplied to an underbody. Figure 3 is a side view of the main part. S... Work station 1A... Underbody 1B... Cab side 2... Overhead conveyor 3.
...Drop lifter 4...Underbody support mechanism 5...
Cab side support mechanism 6... Hanging hanger 7... Hanging hanger rail 7a... Moving part 13... Carrier 15... Rail 17・・・・・・
... Lifting member 18 ... Guide member

Claims (1)

[Claims] (1) An automobile body assembly device that supplies the underbody using a hanging hanger method and supplies and integrates the cab side with a drop lifter from above, in which the hanging hanger rail is slid to a position where it does not interfere with the drop lifter. An automobile body assembly device characterized by the following features: