JPS633809B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a line shaft-driven conveyance device, that is, a line shaft is disposed along the travel path of a conveyance vehicle, and the conveyance vehicle has a driven motor which presses against the line shaft obliquely. A conveyance device that is provided with rollers and is configured to move by applying a thrust in the traveling route direction to the conveyance vehicle through the driven roller by rotation of a line shaft, the conveyance device moving from the terminal end of the conveyance line to the start end of the conveyance line. The present invention provides a conveyance device in which a return route for returning an empty conveyance truck up to the present invention is disposed directly below the outgoing route serving as the conveyance line, and the empty conveyance truck is moved backward in an inverted state.

An embodiment of the present invention will be described below with reference to the attached illustrative drawings. In FIG. 3 is a transport vehicle, and 4 is a line shaft for propelling the transport vehicle, which is disposed parallel to the route direction at an intermediate position between the outbound route 1 and the inbound route 2.

As shown in FIGS. 2 and 3, a pair of left and right groove-shaped guide rails 5 and 6 are installed on the outbound route 1 and the inbound route 2, and the carriage 3 is fitted with a pair of groove-shaped guide rails 5 and 6. A matching horizontal shaft wheel 7 is pivotally supported on both the left and right sides, and a driven roller 8 that presses against the line shaft 4 is also pivotally supported. In FIG. 2, reference numeral 9 denotes a vertical shaft wheel for preventing the transport vehicle 3 from swaying left and right.

Transport vehicle route switching means 10 shown in FIG. 4 are provided at both ends of the outbound route 1 and the inbound route 2, respectively. This means 10 has a rotating frame 11 that can rotate around the line shaft 4, and rotates the rotating frame 11 every 180 degrees to rotate the guide rail 5 of the outbound route 1 and the guide rail 6 of the inbound route 2. Two sets of groove-shaped guide rails 12 and 13 are constructed, which are sequentially connected to the rotating frame 11, and the rotating frame 11 is connected to a toothed ring part 14 attached to the rotating frame 11 concentrically with the line shaft 4, and a gear 15 that meshes with the toothed ring part 14. A motor 16 is provided to rotate the rotating frame 11 every 180 degrees, and the rotating frame 11 is further provided with conveyance vehicle stopping means 17 shown in FIGS. 6 and 7. Reference numeral 18 denotes a plurality of supporting rollers that rotatably support the rotating frame 11.

As shown in FIG. 5, the driven roller 8 is
It is supported by a movable member 20 which is supported by a vertical shaft 19 at the bottom of the transport vehicle, and this movable member 20 is moved into a first driven position in which the abutting portion 23a abuts against the stopper 22 by means of a biasing means 21 built in a compression coil spring. Retained. Further, the side of the biasing means 21 opposite to the movable member 20 side is pivotally connected to a switching arm 24, and this switching arm 24 is connected to the biasing means 2.
It is held in the first position in contact with the stopper 25a by a biasing force of 1. 26 is a cam driven roller pivotally supported by the switching arm 24;
a and 27b are cam driven rollers pivotally supported by the movable member 20.

In FIG. 5, reference numeral 28 denotes a stopping means disposed at the transport vehicle stopping position on the outgoing route 1;
The cam rail 29 is provided with a cam rail 29 that can be switched between an operating position shown by a solid line and a retracted position shown by a phantom line using a cylinder unit (not shown) or the like.

By rotating the line shaft 4 in the direction of the arrow 31 shown in FIGS. 2 and 5 by the motor 30 shown in FIG. As shown in FIG. 5, by being in a driven posture inclined at an angle of 45 degrees with respect to the line shaft 4, it moves forward in the direction of arrow 32. When the transport vehicle 3 moving in this manner is to be stopped at a stop position on the outgoing path 1, the cam rail 29 at the stop position is switched to the operating position shown by the solid line in FIG. As the cam driven roller 27a of the movable member 20 moves, the cam follower 27a of the movable member 20
9, the movable member 20 rotates and the driven roller 8 is switched to an idling posture in which it is parallel to the line shaft 4, as shown by the imaginary line in FIG.
Therefore, when the driven roller 8 simply rotates freely due to the rotation of the line shaft 4, no thrust is applied to the transport vehicle 3, and the transport vehicle 3 automatically stops at its stop position.

Even in this stopped state, the biasing means 21 biases the movable member 20 in the direction of returning it to the original first driven position, as shown by the imaginary line in FIG. 5, so that the cam rail 29 cannot be returned to the retracted position. As a result, the movable member 20 automatically returns to the first driven position in which the abutting portion 23a contacts the stopper 22, and the driven roller 8 returns to the original driven position, so that the carrier 3 moves in the direction of the arrow 32 again. .

If the transport vehicle 3 moving in the direction of the arrow 32 on the outward route 1 as described above transfers to the guide rail 12 of the route switching means 10 at the end of the route as shown in FIG. 4, then FIG. The transport vehicle 3 is automatically stopped on this guide rail 12 by a stopping means 17 shown in FIG.

This stopping means 17 has a cam rail 33 which is the same as the cam rail 29 of the stopping means 28 shown in FIG.
and a cam that switches the switching arm 24, via its cam driven roller 26, from the first position in which it contacts the stopper 25a to the second position in which it contacts the stopper 25b, by utilizing the movement of the transport vehicle 3 immediately before stopping. A plate 34 is provided.

Therefore, as shown in FIG. 6, the transport vehicle 3 transferred onto the guide rail 12 of the route switching means 10 is operated by the cam rail 33 of the stopping means 17 in the same manner as explained based on FIG. As a result of this action, the driven roller 8 is switched to an idling position parallel to the line shaft 4, and as a result, it automatically stops on this guide rail 12, but at the same time, the cam driven roller 26 is pressed relatively to the cam plate 34. Then, the switching arm 24 is switched to the second position in which it contacts the stopper 25b.
As a result, the biasing direction of the biasing means 24 with respect to the movable member 20 is switched, but since the two cam driven rollers 27a and 27b of the movable member 20 are both in contact with the cam rail 33, the movable member 20 is not biased. The driven roller 8 is held parallel to the line shaft 4 without being influenced by the biasing force of the biasing means 24.

In this state, the rotary frame 11 shown in FIG. 4 is rotated 180 degrees by the motor 16, and the guide rail 12 is connected to the guide rail 6 on the return route 2. As a result, the carriage 3 is inverted, but rotates around the line shaft 4, so the driven roller 8 of the carriage 3 rotates around the line shaft 4 while remaining in contact with the line shaft 4. It comes into pressure contact with the lower side of the line shaft 4.

Next, as shown in FIG. 7, by switching the cam rail 33 to the retracted position, the movable member 20 is switched to the second driven posture in which the contact portion 23b contacts the stopper 22 by the urging force of the urging means 24. It will be done. Therefore, the driven roller 8 assumes a driven posture inclined at an angle of 45 degrees in the opposite direction.
The direction of the thrust acting on the transport vehicle 3 is reversed by the line shaft 4 rotating in the direction of arrow 31 and the driven roller 8 obliquely pressed against the line shaft 4, and the transport vehicle 3 starts in the opposite direction of arrow 35. I will do it.

In this way, the carrier vehicle 3 transfers from the guide rail 12 of the route switching means 10 onto the guide rail 6 of the return route 2 in an inverted position, and moves along the return route 2 in the direction of the arrow 35. This return route 2
In order to stop the transport vehicle 3, a stop means similar to the stop means 28 shown in FIG. 5 may be provided at the transport vehicle stopping position.

The action of transferring the transport vehicle 3 from the end of the outgoing route 2 to the starting end of the outgoing route 1 is performed in the same manner as described above by the route switching means 10 located at the corresponding position.
The carriage 3 is returned to the upright position, the movable member 20 is returned to the first driven position, and the carriage 3 is sent out to the guide rail 5 on the outgoing route 1.

As shown in FIG. 8, a line shaft 4a for the outbound route and a line shaft 4 for the inbound route
b are provided separately, by driving both line shafts 4a and 4b in opposite directions, there is no need to change the direction of the driven roller 8 as in the previous embodiment, and the movable member 20
It is configured to be rotatable only between a driven posture in which the abutting portion 23a abuts the stopper 22 and a posture in which the driven roller 8 is parallel to the line shaft, and is simply biased toward the driven posture by a spring. Just leave it there.

The present invention can be implemented as described above, and
On the return route located directly below the outbound route of the transport vehicle, the empty transport vehicle can be moved backwards in an inverted position, and it can be transported from the end of the outbound route to the end of the return route or vice versa. When transferring the trolley,
Since the transport vehicle is configured to be reversed around the axis in the route direction, the route of the transport vehicle can be changed within a narrow space, and in particular, as shown in the example,
Sending the transport vehicle into this route switching means,
Alternatively, the extension of the line shaft for propelling the transport vehicle on the outbound route or the inbound route can be used as is to send the transport vehicle to the outbound route or the inbound route.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of the whole, Fig. 2 is a partial plan view, Fig. 3 is a longitudinal front view, Fig. 4 is a front view of the route switching means, and Fig. 5 is a stop of the conveyor cart on the outgoing route. FIGS. 6 and 7 are explanatory views of the operation of the means, FIGS. 6 and 7 are explanatory views of the operation of the transport vehicle stopping means within the route switching means, and FIG. 8 is a longitudinal sectional front view showing a modification. DESCRIPTION OF SYMBOLS 1... Outbound route, 2... Inbound route, 3... Transport vehicle, 4, 4a, 4b... Line shaft for propelling the transport vehicle, 5, 6... Guide rail, 8... Driven roller, 10... ...Route switching means, 11...
Rotating frame, 12, 13...Guide rail in route switching means, 17, 28...Transportation vehicle stopping means, 20...Movable member, 21...Biasing means, 2
2, 25a, 25b...stopper, 23a, 2
3b...Abutting part, 24...Switching arm, 2
6, 27a, 27b...cam driven roller, 2
9, 33...cam rail, 34...cam plate.

Claims (1)

[Claims] 1. Directly below the forward route of the transport vehicle, there is a return route for the inverted transport vehicle, and at both ends of both routes,
A route switching means is provided for rotating the conveyance cart around the axis in the route direction from an upright state to an inverted state, or vice versa, and transfers from one route to the other route, and A conveyance vehicle is provided with a line shaft for propulsion of a conveyance vehicle disposed on the route parallel to the direction of the route, and a driven roller provided on the conveyance vehicle that presses diagonally against the line shaft on the outbound route and the return route. Device.