JPH0719217U - Automated guided vehicle - Google Patents

Abstract

(57) [Summary] [Purpose] To enable smooth smooth and individual transport of multiple works of different sizes with a single automated guided vehicle. [Structure] A pair of guides 15a, 1 for guiding a work when the work is transferred by a conveyor on an automated guided vehicle.
The ball screw 2 in which one of the guides 15a of 5b is movable via a pair of linear guides 19 and a rotary unit 22 integrated with the guides 15a is screwed.
1 is interlocked with a motor 20 with a DC brake.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automated guided vehicle, which is capable of transporting two or more kinds of works having different sizes in a single manner.

[0002]

[Prior art]

 An automated guided vehicle is used to transport many works between specific points. There are cases in which not only one type of work is transported between multiple stations on the ground but also two types of work are transported. Below, a case where two types of works are placed one by one on an automatic guided vehicle and conveyed will be described.

First, the structure of the automatic guided vehicle will be described with reference to FIG. On a main body 2 having wheels 1, three driving rollers 3a and four free rollers 3b driven by a motor (not shown) are provided on the same plane. Then, guides 4 for guiding the work to be placed on the rollers are provided in front of and behind the automatic guided vehicle, and an electric stopper 5 is provided to prevent the placed work from dropping to the opposite side. .

A conveyor for transferring the work is also provided at a station on the ground where the work is placed or unloaded on the automatic guided vehicle, and a guide for guiding the work is also provided on the conveyor. Then, the width of the guide 4 of the automatic guided vehicle for individually mounting two kinds of works one by one is set to the size corresponding to the larger work, while the width of the station for transferring the larger work is set. The width of the guide is large and small. The width of the guide of the station that exchanges the smaller work is set small.

[0005]

[Problems to be solved by the device]

 However, the following problems occur because the work slides and moves due to inertial force when the automated guided vehicle starts or stops. As shown in FIG. 5A, even if the work 6 moves when the larger work 6 is placed on the automatic guided vehicle, the work 6 is small until it hits the guide 4 as shown in FIG. 5B. There is no problem because only the amount moves. On the other hand, when the smaller work 6 is placed as shown in FIG. 6A, the work 6 is largely moved by the time it hits the guide 4 and is rotated as shown in FIG. 6B. Since the interval between the guides 7 of the station is set small in advance corresponding to the work 6, as shown by the phantom line in FIG. It cannot be transferred.

[0006] Therefore, an object of the present invention is to provide an automatic guided vehicle that solves the above problems.

[0007]

[Means for Solving the Problems]

 The configuration of the present invention to achieve such an object is an unmanned guided vehicle having a conveyor for transferring a work on a trolley body that is capable of traveling and a pair of guides for guiding the work on the conveyor. One of the pair of guides is fixed to the trolley body, the other is movable in a direction of increasing or decreasing the distance between the pair of guides, and the other guide is linked to the driving means.

[0008]

[Action]

 When transporting a large work, the distance between the pair of guides of the automated guided vehicle is increased, and when transporting a small work, it is reduced. The distance between the pair of guides is set large in advance at the station on the ground where large workpieces are transferred, and the interval is set small at the station where small workpieces are transferred. By stopping the automated guided vehicle so that the center lines coincide with each other, both guides are aligned on the same straight line, and workpieces can be transferred smoothly by the conveyor.

[0009]

Embodiments The present invention will be described in detail below based on embodiments shown in the drawings.

The construction of the automatic guided vehicle according to the present invention is shown in FIGS. As shown in FIGS. 2A and 2B, wheels 11 are provided on the bogie main body 12, and the wheels 11 are linked to a motor (not shown). A plurality of rollers 13 including drive rollers are provided on the carriage main body 12 side by side in the left-right direction while extending in the front-back direction of the carriage main body 12. The driving roller is linked to the DC geared motor 14. As shown in FIG. 1, a pair of guides 15a and 15b are provided at the front and rear positions of the carriage main body 12, and the guides 15b are fixed to the carriage main body 12 via a support member 16 extending in the front-rear direction. On the other hand, the guide 15a is provided so as to be movable in the front-rear direction of the carriage main body 12 via a linear guide 19 composed of a pair of guide rods 17 and guide sleeves 18 arranged on the left and right of the carriage main body 12. The output shaft of the motor 20 with a DC brake is connected to the guide 15a as a driving means for driving the guide 15a. That is, the rotary unit 22 integrated with the guide 15a is screwed into the ball screw 21 rotatably supported by the support member 16 and a member (not shown), and the ball screw 21 includes a pair of pulleys 23 and 24 and a belt. 25 and the output shaft of the motor 20 with the DC brake. Then, the limit switch 26 is fixed to the carriage body 12 to stop the guide 15a at a specific position where the guide 15a occupying two positions is close to the guide 15b, while the dog 27 is fixed to the rotary unit 22. Has been done. Reference numeral 28 is a battery for driving the respective motors, 29 is a bumper, 30a and 30b are works, and 31 is an electric stopper.

Next, the operation of such an automatic guided vehicle will be described. When a large work 30a is placed on an automated guided vehicle and is conveyed, the distance between the pair of guides 15a and 15b is increased as shown in FIG. 3 (a). The distance between the pair of guides 33 at the station for transferring the large work 30a is also set to a size corresponding to the distance between the pair of guides 15a and 15b. By setting the unmanned transport vehicle to stop so that the center lines of the pair of guides 33 in each station and the center lines of the pair of guides 15a and 15b in the unmanned transport vehicle coincide with each other, the work 30a is set in two pairs. It can be smoothly transferred along the guides 15a, 15b, 33.

On the other hand, when the small work 30b is carried on an unmanned guided vehicle, the distance between the pair of guides 15a and 15b is made small as shown in FIG. 3B. The distance between the pair of guides 33 at the station for transferring the small work 30b is also set to a size corresponding to the distance between the pair of guides 15a and 15b. Even in this case, the automatic guided vehicle is set to stop so that the center lines of the pair of guides 33 and the center lines of the pair of guides 15a and 15b are aligned.

In this way, the intervals between the pair of guides 15a and 15b and the pair of guides 33 are set to be the same according to the size of the work, and the center lines of the pair of guides are aligned. Since the automated guided vehicle is stopped, both guides are aligned on the same straight line as shown in FIGS. 3 (a) and 3 (b), and workpieces can be transferred smoothly even if they are different in size.

In the present embodiment, the case where the size of the work is two kinds is shown, but it can be applied to the case where there are three kinds or more.

[0015]

[Effect of device]

 As can be seen from the above description, according to the automatic guided vehicle of the present invention, one guide is fixed and the other guide is movable, so that the distance between the pair of guides is set to a value corresponding to the size of the work. It can be set, and the work is prevented from being biased or rotated when the automated guided vehicle is moved or stopped, and work can be transferred smoothly between the station on the ground and the automated guided vehicle. Further, unlike the prior art, there is no need to change the interval between the guides in the station on the ground on the way, and it is possible to smoothly carry two or more types of works having different sizes one by one.

[Brief description of drawings]

FIG. 1 is a perspective view showing an essential part of an automated guided vehicle according to the present invention.

2 is a plan view and FIG. 2B is a front view of an automatic guided vehicle according to the present invention.

FIG. 3 is an explanatory view of the operation of the automatic guided vehicle according to the present invention.

FIG. 4 relates to a conventional automated guided vehicle, (a) is a plan view,
(B) is a front view.

FIG. 5 is an operation explanatory view of a conventional automatic guided vehicle.

FIG. 6 is an operation explanatory view of a conventional automatic guided vehicle.

[Explanation of symbols]

 11 ... Wheel 12 ... Bogie main body 13 ... Roller 14 ... DC geared motor 15a, 15b ... Guide 19 ... Linear guide 20 ... DC brake motor 21 ... Ball screw 22 ... Rotary unit 23, 24 ... Pulley 25 ... Belt

Claims (1)

[Scope of utility model registration request] 1. An automated guided vehicle comprising a movable carriage main body provided with a conveyor for transferring and receiving a work, and a pair of guides for guiding the work on the conveyor, wherein one of the pair of guides is a carriage. An automatic guided vehicle, characterized in that it is fixed to the main body, the other is movable in the direction of increasing or decreasing the distance between the pair of guides, and the other guide is interlockingly connected to the drive means.