JPS63174853A - Multiple conveying device - Google Patents

Abstract

PURPOSE:To enable smooth waiting and replacement of a motor truck, by a method wherein, in the running rail for the motor truck, a part of a trunk rail and a storage rail, installed in juxtaposition togetherwith the motor truck, are positioned alternately based on a trunk rail position. CONSTITUTION:Parallel rails 3a and 3b, formed in combination of the partial rail of a trunk and. storage rail by means of a frame 2, are disposed on a trunk rail 1, and either of them is connected to the trunk rail 1 through a switching rail 4. When motor trucks A and B enter from the right and the motor truck A is topped in a parallel rail 3a position, the parallel rail 3a is moved over the switching rail 4 in a state to place the motor truck A thereon, The motor truck A is run to the parallel rail 3b and stopped for waiting. Thereafter, the motor truck B is advanced ahead on a linear rail and passes the other motor truck. This constitution enables smooth waiting and replacement of the motor truck at a limited space.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a multi-transport device in which a plurality of electric carts for transporting members run on closed-loop transport rails.

(Prior technology) Traditionally, in production lines for vehicles, etc., in order to deliver various parts to each process, transport rails are laid along each process, and trolleys, etc. are controlled by computers to transport the parts to each process. are doing. In order to improve the work efficiency, during non-working hours, a computer uses an automatic system to move the parts that have been processed on the same day to the designated location using one trolley in time for the next delivery.
i (Japanese Unexamined Patent Publication No. 44585), etc. are used, and there is also a device (dedicated to the system) that transports parts with a stacker plane, etc., between a parts shelf, a machining center, and a parts processing shelf. JP-A No. 58-90451) etc. are often used.

These automatic conveyance devices require multiple members,
In a multi-transfer device that operates multiple electric carts, a bypass branch is required in order to wait and exchange the electric carts due to reasons such as delivery of parts and assembly order. An example is shown in Fig. 7. Storage rail (bypass rail) 11
- Branches from the main rail 12 at point rails 13 and 14 and is laid along the main rail 12. The point rails 13 and 14 run on the movable rail 15 to perform entry switching between the main rail 12 and the storage rail 11.

When electric trolleys A, B, and C enter this main rail 12 from the right, they move the point rail 13 to the storage rail 1.
1, the electric trolleys A and B enter the storage rail ll and wait. When the waiting time ends, the electric carts A and B can advance to the left by moving the point rail 14 and connecting it to the storage rail 11. If you need the parts mounted on electric trolley C first, move the point rail 13 and connect it to the main rail 12 while electric trolleys A and B are on standby (Fig. 7).
You can overtake by passing the electric trolley C to the left. As described above, multiple conveyance devices are commonly used.

(Problems to be Solved by the Invention) However, in the multi-conveyance device, providing a bypass branch on the conveyance rail to stand by and replace the motorized platform ilj requires a large installation space for the bypass branch. This is inconvenient because it has to be placed at multiple locations. In addition, the efficiency is low because the area occupation rate of the point when bypass branching is large.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to reduce the installation space and to smoothly perform standby and replacement of a motorized platform ψ.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides storage rails that are installed parallel to some rails of the main line in the running rail of an electric trolley for transporting members, and The partial rail of the main line and the storage rail are provided movably in a direction perpendicular to each rail, and the partial rail of the main line and the storage rail are arranged alternately with respect to the position of the partial rail of the main line. It is characterized by being located so as to close the position.

The partial rail of the main line and the storage rail may be connected to the main line in plurality and disposed so as to be movable with respect to each other, or may be disposed at a plurality of locations on the main line. The main rail may be constructed, and the electric trolley may also be of a suspended type.

(Operation) Rail switching for waiting and overtaking is a system that positions the storage rail in a straight line with the main line by moving the combination of a part of the main rail and the storage rail in a direction perpendicular to the rail. Make it. The electric trolley that rides on some of the rails of the main line laid in this way moves along with the rail in a direction perpendicular to the main line and enters a standby state, and the storage rail is located in the original position in a straight line with the main line. . When the electric trolley from the rear moves forward through the storage rail connected to the main line, the waiting electric trolley returns to the main rail position by switching the rails. In the same way, you can pass an electric trolley that is moving backwards by going into a standby state. Furthermore, if these rail assemblies are arranged in series, the electric trolley can move on a plurality of storage rails even in a standby state.

(Example) Embodiments of the present invention will be described based on the accompanying drawings.

Figure 1 shows a switching device for the main line of a multi-transfer system. In the figure, l is the main rail, and two frames
Parallel rails 3a and 3b, which are a combination of a part of the trunk rail and a storage rail, are arranged, and the parallel rails 3a,
3b is moved perpendicularly to the main rail 1, and the switching rail 4 is suspended from the ceiling so that either one of the parallel rails is always connected to the main rail 1.

This switching device is installed at multiple locations on the closed conveyance loop.
The standby and overtaking operations of the electric trolley of this device will be explained step by step from FIG. 2 to FIG. 6.

When electric trolleys A and B approach from the right and electric trolley A stops at the position of the parallel rail 3a (Fig. 2), the parallel rail moves on the switching rail 4 with the electric cart mounted thereon by an actuator (not shown). Figure 3). Electric trolley A travels to the parallel rail 3b, stops, and waits, and electric trolley B
Since it moves forward on the straight rail, it can overtake electric truck A (Figure 4).After waiting, electric truck A moves along the switching rail 4 together with the parallel rail 3b and moves to the main rail l.
When the parallel rails 3b and 3b are connected (FIG. 5), the electric trolley A moves forward to the left (FIG. 6).

With the above, this device can stand by and overtake electric trolleys.

By connecting a number of switching devices and having electric carts on standby for all of them, it is possible to select an electric cart at will, and there is no need to consider a rearrangement procedure.

(Effects of the Invention) Since the present invention is configured as described below, the installation space is reduced and a plurality of devices can be provided in other locations. Furthermore, since the number of rails configured has been reduced, the number of power supplies to the rails has been reduced, improving safety. Additionally, there are fewer rail joints when the electric bogie transfers to the rails, and curved rails at points are no longer required, allowing for more stable running and improved reliability.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of the switching device of the multi-transport device of the present invention, Figs. 2 to 6 are explanatory diagrams of waiting and overtaking of electric carts A and H, and Fig. 7 is a diagram of the switching device of the conventional multi-transport device. It is a block diagram of a device. l... Main rails 3a, 3b... Parallel rails (part of the main rail and storage rail) A, B... Electric bogie patent applicant Toyota Motor Corporation (and 2 others) Figure 1 Figure 4 Figure 3 ・;':61'1 Figure 7

Claims (3)

[Claims] (1) On the traveling rails of the electric trolley for transporting parts, a storage rail is laid parallel to a part of the rail of the main line, and the part of the rail of the main line and the storage rail are moved in a direction perpendicular to each rail. 1. A multi-transport device, characterized in that the multi-transport device is freely provided so that the partial rails of the main line and the storage rail are arranged alternately with respect to the positions of the partial rails of the main line for each electric truck. (2) The multi-transport device according to claim 1, wherein a plurality of the partial rails of the trunk line and the storage rails are connected to the trunk line and arranged so as to be movable with respect to each other. (3) The multi-transport device according to claim 1, wherein the partial rail of the main line and the storage rail are arranged at a plurality of locations on the main line.