JPS583871B2 - Transfer method in automobile outfitting line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer method in an automobile outfitting line.

Automotive outfitting lines usually set the car body on a trolley, and move the trolley continuously or intermittently in the direction of travel using rails laid on the floor (work surface). is common.

It is natural that such an outfitting line has several curves, and the prescribed outfitting work is performed on each straight section, but the round of the curved section must be made larger than a certain level in order for the bogie to move smoothly. It does not move, it is impossible to work on the front and rear of the car body because the distance between the front and rear bogies becomes small in the curved part, and the circumferential speed becomes faster in the curved part in the case where the bogie moves continuously. The workability of the line space occupied by the curved portion is extremely poor, as it is extremely difficult to work with.

In addition, in the above-mentioned outfitting line, the work process under the floor of the automobile, such as the process of installing engines and suspension assemblies, is carried out by digging down the floor to form a pit P, as shown in Figure 6. It is common for workers to go inside and carry out outfitting work under the floorboards of automobiles.

However, in this conventional system, the subline SL, where the engine, suspension assembly, etc. are transported, has to be installed on the floor (normal work surface) F like the main line ML, so the In order to put the engine etc. under the floor of the car body, the rail R of the main line ML gets in the way, and it is necessary to lower a part of the rail R before putting the engine etc. under the floor. In addition, since the workers have to work inside the pit P, they are unable to move freely due to the surrounding walls, resulting in extremely poor work efficiency and work environment.The workers are also extremely mentally and physically fatigued, and improvement is required. has been done.

In order to solve the above problem, it is possible to use a lifting method in which a mobile crane is installed above the car body to lift it and float it, as is done with general railway vehicles, but this method requires large-scale equipment and equipment. Not only is the cost expensive, but the hoisted car body is much lighter than a railway car and therefore unstable. However, there are problems such as the need for large hangers, making it difficult to use in small to medium-sized automobile production outfitting lines.

The present invention provides a transfer method in an outfitting line that can eliminate the various conventional problems as described above, and will be described below with reference to the accompanying drawings.

Fig. 1 is a diagram showing an example of the overall layout of the outfitting line according to the present invention, in which car bodies sent from A enter the main line and are placed on bogies and are sequentially moved in the direction of the arrow. Or sent intermittently.

Each piece of equipment sent via a sub-line (not shown) is mounted on the vehicle body at each predetermined position on the main line.

The vehicle body, which has been sent sequentially through several curves in this manner, reaches the underfloor outfitting process section B for the engine, suspension assembly, etc.

In the present invention, the car body that has entered the underfloor outfitting process section B is vertically lifted up with the cart by a lifting lifter L1, which will be described later, without changing the direction of the car body itself, making it suitable for workers to perform underfloor work. height (e.g. 1 higher than floor F)
The robot moves sideways on a rail supported at a height of about 1.5 m, and as shown in Figure 5, installs the engine, front suspension assembly, rear suspension assembly, etc. sent from the sub-line SL.

When the work in the above-mentioned underfloor outfitting process section B is completed, it enters the descending lifter L2, and the descending lifter L2 descends and is lowered onto the rail laid on the normal floor to proceed to the next process. do.

Then, the line reaches exit section C and all outfitting is completed.

Figures 2 to 4 show the ascending lifter L1 of the underfloor outfitting process section B.
FIG. 2 is a detailed diagram of an embodiment of the unit, and the structure and operation thereof will be described below.

The ascending lifter L1 is guided by a guide 8 fixed perpendicularly to the floor F so that it can rise and fall up and down, and when descending, the ascending lifter L1 is provided with a rail that has guided the cart to that part. A vertical running rail 2 is fixed to the end of the vertical running rail 2 so as to be connected substantially flush with the end of the vertical running rail 1, and a horizontal running rail 3 is fixed above the vertical running rail 2 in a direction orthogonal to the rail 2.
is provided.

The lateral rail 3 is divided into three parts: a fixed rail 3a in the center and movable rails 3b, 3c on both sides of the fixed rail 3a. It is constructed so that it can move in the longitudinal direction of the rail 3 to a position where it is joined to both end faces of the rail 3 and to a position where it is separated from the rail 3.

On the other hand, the bogie 10 on which the vehicle body 9 is mounted has not only longitudinal wheels 10a for running on the rails 1, but also horizontal wheels 10b mounted inside and above the wheels 10a in a direction orthogonal to the wheels 10a. is installed.

The longitudinal running wheel 10a that has rolled on the rail 1 rolls as it is on the longitudinal running rail 2 of the lifter L1 which is connected flush with the rail 1, and is sent onto the lifter L1.

Here, the front wheels of the longitudinal wheels 10a of the bogie 10 are positioned on the rail 1' on the floor beyond the lifter L1, passing over the rail 2 on the lifter L1, and the rear wheels are positioned on the rail 1 in front of the lifter L1. At this position, the front and back positions are regulated by, for example, a stopper 6 and an anti-back stopper 5 provided on the floor F, and the lifter stops while straddling the lifter L1.

In this case, the movable rails 3b and 3c are located at a distance from the fixed rail 3a, and the lateral running wheel 10b is located within the gap between the fixed rail 3a and the movable rails 3b and 3c.

By operating the cylinder devices 4a and 4b, the moving rails 3b and 3c are moved to the horizontal running wheels 10 of the truck 10.
b, and joins to the end face of the fixed rail 3a to form one series.

In this state, the lifter L1 rises and stops at a predetermined height, but when the lifter L1 rises, the cart 10 is supported by the lateral running wheels 10b fitting into the lateral running rails 3, and the lifter L1 rises. At this position, the front end of the traverse rail 3 is in a state where it is connected substantially flush with the end of the rail 11 for the underfloor outfitting process, which is fixed at a predetermined height in a direction perpendicular to the rail 1.

Then, a cylinder device (for example, an air cylinder) 7 for sending out the truck provided on the lifter L1 is extended and pressed to push the truck 10 in the direction of the rail 11.

Then, the lateral running wheel 10b rolls from the lateral running rail 3 onto the rail 11, and is further pulled in by the bogie retracting cylinder device (for example, an air cylinder) 12 provided on the rail 11 side, and is moved to the underfloor outfitting process section B. For example, the trolley 10 is transported by a go-back conveyor or the like provided in the process section B.
is transported horizontally in a tact manner.

When the truck 10 is sent out, the ascending lifter L1 descends, and the movable rails 3b and 3c of the traversing rail 3 are separated from the fixed rail 3a by the cylinder devices 4a and 4b, respectively, in preparation for feeding the next truck.

The lateral running wheels 10b are guided with their upper and lower sides supported by the lateral running rails 3 and 11 to prevent the risk of overturning due to body balance. Taking this into consideration, a configuration in which it is supported by one pillar 13 is adopted.

The structure of the descending lifter L2 is the same as that of the ascending lifter L1, and its operation is simply reversed, so illustrations and detailed explanations of its operation will be omitted.

The lifting and lowering operations of the lifters L1 and L2 are performed by a cylinder device, an electric motor, or other arbitrary means.

As described above, in the present invention, in the outfitting line, the underfloor outfitting process parts such as the engine, front suspension assembly, rear suspension assembly, etc. that are to be installed from under the floor of the car body are carried out by the worker while standing on the normal work surface. A lifting lifter that is located at a position higher than the normal line to allow installation work under the floor, and at the entrance and exit of the underfloor outfitting process section, lifts and lowers the automobile body vertically while it is placed on a trolley; A descending lifter is installed so that the truck can be moved sideways on the rails of the underfloor outfitting line laid at the above-mentioned high position without having to change direction. However, workers can work on the general floor, which significantly improves the work environment and work efficiency, and since the car body is transported horizontally, the number of processes can be increased compared to vertical transport, and the curve Since there is no space, it can bring many benefits such as being advantageous in terms of space.

In addition, under-floor outfitting is often carried out at the front and rear parts of the car body, but since the car body is sent sideways, there are no obstacles such as rails in the front and lower parts of the car body, and the work space is wide, and the suspended earth method is used. Comparatively, the method of regulating trolleys is easy and it is easy to mechanize loading, so there is also the advantage that measures against aging of workers, such as automation of equipment and reduction of heavy objects, etc., are facilitated.

[Brief explanation of the drawing]

FIG. 1 is a layout diagram showing an example of an outfitting line according to the present invention, and FIGS. 2, 3, and 4 are a side view, a front view, and a plan view showing detailed embodiments of the ascending lifter section in FIG. 1. be. Figures 5A and 5B are a schematic plan view and a front view showing the working condition of the underfloor fitting process section in Figure 1, and Figures 6A and 6B are a schematic plan view and a front view showing the working condition of the conventional underfloor fitting process section. be. ML...Main line, SL...Sub line, F...Floor, A...Entrance section, B...Underfloor outfitting process section, C: Exit part, L1: Ascending lifter, L2: Descending lifter, 1: Rail, 2: Vertical rail , 3...Rail for horizontal running, 3a...
...Fixed rail, 3b, 3c...Movable rail, 4a, 4b...Cylinder device, 7...
・Cylinder device for sending out the trolley, 8...Guide, 9...Automobile body, 10...Dolly,
10a...Wheel for vertical running, 10b...
Lateral running wheels, 11... Rails of the underfloor outfitting process section, 12... Cylinder device for pulling in the bogie, 13
・・・・・・Pillar.

Claims (1)

[Scope of Claims] 1. In an outfitting line in which various types of outfitting are carried out by moving automobile bodies mounted on bogies vertically on rails laid on the floor, workers normally move the rails in the underfloor outfitting process section. The rails are placed at a level higher than other rails to allow outfitting work under the floor of the car body while standing on the work surface, and lifters for raising and lowering are provided at the entrance and exit of the underfloor outfitting process section, respectively. without changing the direction, it is lifted vertically and placed horizontally on the rail of the underfloor fitting process section and fed horizontally, and when the underfloor fitting process is completed, it is lowered vertically and sent vertically to the next process. A transfer method in an automobile outfitting line characterized by: 2. A patent in which a bogie is provided with horizontal wheels in addition to longitudinal wheels at a higher position than the longitudinal wheels, and the horizontal rails fit into the rails of the underfloor fitting process section, allowing the bogie to be moved laterally. A transfer method in an automobile outfitting line according to claim 1. 3 The lifter for raising and lowering is provided with a vertical running rail that connects to the end of the normal rail at its lowered position, and a horizontal running rail that is perpendicular to the vertical running rail at a position above the vertical running rail, and The running rail is composed of a fixed rail at the center and moving rails at both ends thereof, and with the moving rail located at a distance from the fixed rail, the truck is sent onto the lifter or sent out from the lifter in the vertical direction,
By arranging the movable rail in a position where it is connected to the end of the fixed rail, the wheels for lateral running of the bogie are fitted into the rail for lateral running, and in the raised position of the lifter, the end of the rail for lateral running is connected to the underfloor fittings. 3. A method of transferring in an automobile outfitting line according to claim 1 or 2, wherein the transfer method is connected to an end of a rail of a process section.