JPH03227822A - Guiding device for work on unmanned conveying vehicle - Google Patents

Abstract

PURPOSE:To convey a plurality of works different in size by a method wherein a plurality of pairs of guide means a separate distance between which is differed with the size of the work are located in a level at which a work to be guided is not interfered with a work to be transferred when other work than the work to be guide is transferred. CONSTITUTION:A protection members 3 is coupled through a channelform mounting members 4 to each of the two ends in a longitudinal direction of a placing plate 2 of a truck V, and a number of transfer rollers 5 are aligned in the direction of width in the mounting member 4. A guide rail 8 is installed slightly above the outer end part of the transfer roller 5, and a work W1 having a wide size is placed on the roller 5 in a state to be guided by a guide rail 8. The work is securely placed during movement of the truck V by means of stationary stoppers 15 on the transfer side and the recovery side being both sides of the moving stopper and a moving stopper 16. A mounting member 9 is securely mounted internally of the mounting member 4, transfer rollers 12 are arranged in juxtaposition in a level lower than that of the roller 5, and a work W2 is guided by means of an expansion part 14 of the outer end part of the roller 12. Thus, the works W1 and W2 different in size can be conveyed and transferred.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a guide device for a conveyed object on the vehicle side when the conveyed object is transferred between an automatic guided vehicle and an external transfer device.

[Prior Art J] On a production line in a factory, an unmanned trolley carries a workpiece and travels along a predetermined travel path, transports the workpiece to a predetermined position, and then transfers it to another line.

That is, as shown in FIGS. 5 and 6, the mounting portion 31 on the top surface of the cart
Two rows of conveyor rollers 32 are arranged in a row in the width direction, and when the cart reaches the delivery point, the conveyor rollers 32 are rotated by an electric motor inside the vehicle driven by the control section, and a movable stopper 34 is rotated. will be released. At the same time, the external conveyor is also operated, and the work W conveyed from the mounting section 31 to the conveyor by the rotation of the roller 32 is collected at a predetermined position via the conveyor.

When the unmanned trolley transfers the workpiece W to and from the conveyor, it covers the entire width direction of the loading section 31 so as to cover the outer end of each row of 32 rollers so that the position and posture of the workpiece W does not deviate. The workpiece W is guided by a pair of extending guide rails 33, and the workpiece W is guided by a pair of extending guide rails 33, and the workpiece W is guided to a fixed stopper 35 provided in the width direction of the vehicle.
When the movable stoppers 34 come into contact with each other, the movable stoppers 34 are erected to restrict the movement of the workpieces W in the width direction, so that the cart can travel.

[Problems to be Solved by the Invention] However, the guide rails 33 are spaced apart by a certain distance, and can only guide a workpiece W having a longitudinal width corresponding to this distance. Therefore, it is necessary to prepare another trolley to transport works having different front and rear widths, leaving room for improvement in versatility.

This invention was made in order to solve the above-mentioned problems, and its purpose is to provide a conveyance device for conveyed objects in an automatic guided vehicle that can be used to convey conveyed objects of different sizes and has excellent versatility. It is in.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides an automatic guided vehicle that runs on a production line with objects loaded therein, and has a structure on the top surface of the vehicle that connects the vehicle and an external transfer device. A plurality of pairs of guide means, which guide objects of different sizes to be transferred between them, and which have different separation distances depending on the size of the objects to be guided, are used to guide objects other than the objects to be guided. The gist of this is that it is installed at a height that will not interfere with it when it is being transferred.

[Function] Objects of different sizes transferred between the vehicle and the external transfer device are transferred to multiple pairs of guide means with different distances from each other depending on the size of the objects on the top surface of the vehicle. It is guided so as not to interfere with the guiding means.

[Example] Hereinafter, a first example in which this invention is embodied in an unmanned trolley will be described.
This will be explained in detail according to Figures 4 to 4.

In Figure 3, on the production line set up in the factory,
After the workpiece Wl (W2) is transferred to the unmanned cart V by a belt conveyor installed at the work starting point, the unmanned cart V or the workpiece WH runs by detecting the electromagnetic induction wire laid on the floor.
At the collection point, the product is transferred from the cart V to a belt conveyor and collected at a predetermined location.

As shown in FIGS. 1 and 2, a mounting plate 2 is fixedly installed on the base l of the unmanned trolley V, and protective members 3 are provided at the front and rear ends of the mounting plate 2, respectively, in the form of side channels. The attachments made are connected via a member 4. Inside the mounting member 4, a large number of transfer rollers 5 which are pivotally supported on both the inner and outer walls 6a and 6b are arranged in a row in the width direction of the truck V, and the upper part of these transfer rollers 5 is attached to the mounting member. It is exposed from the upper opening of 4. A first row of rollers 7 for supporting and transferring the workpiece W1 is constituted by a large number of rows of transfer rollers 5 lined up left and right.

For both attachments, a transfer roller 5 is provided inside the member 4, respectively.
A guide rail 8 is provided as a guide means made of a bar extending over almost the entire width of the carriage V, slightly above the outer end of the carriage V. When a workpiece Wl having a longitudinal width that occupies almost the entire length of the two left and right first roller rows 7 is transferred to and from the conveyor, it is guided by both guide rails 8, and the workpiece W1 is moved in the moving direction. , is maintained normally in the moving position, and prevents the workpiece W1 from wobbling in the front-rear direction when the cart V is running. Note that this guide rail 8 is located on the transfer side (second side) in the width direction.
Bottom of the figure) The end is bent downward to spread outward, and the non-transfer side end is simply bent downward without being deformed inward or outward, and is fixed to member 4. .

A second mounting member 9, which also has a side channel shape, is fixed on the mounting plate 2, and is attached to both the inner and outer walls at a lower position than the transfer roller 5. 10,1
A large number of transfer rollers 12 supported by a shaft are arranged in a row in the width direction of the truck V, and the upper portions of these transfer rollers 12 are exposed through the upper opening of the mounting member 9. The transfer roller 12
A large diameter portion 12a is formed at the outer end of the roller I2, and a tapered enlarged diameter portion 14 is formed between the large diameter portion 12a and the circumferential surface of the same diameter portion 12b of the roller I2. These rows of transfer rollers 12 arranged on the left and right form a second roller row I3 for supporting and transferring a workpiece W2 smaller than the workpiece W1 at a position lower than the first roller row 7, 1st
When the workpiece Wl is transferred onto the roller row 7, the second roller row I3 is configured not to interfere with the bottom surface of the workpiece W1. Further, on the left and right second roller rows 13, a workpiece W2 having a front-back width that covers the entire same-diameter portion 12b of the roller 12 is placed.
When the workpiece W2 is transferred to and from the conveyor, the row of enlarged diameter portions 14 of the roller 12 constitutes a guide means for maintaining the normal posture and moving direction of the workpiece W2. The enlarged diameter portion 14 presses the workpiece W2 from the front and back when the cart V is running, thereby preventing it from wobbling.

Furthermore, on the non-transfer side of the second roller row 13, on the extension line of the roller row 13, a pair of fixed stoppers 15 are provided that protrude upward from the mounting plate 2, and each roller row 7, 1
Work Wl supported by 3.

W2 is prevented from falling from the base 1 to the non-transfer side. Further, on the transfer side of the second roller row 13, a movable stopper 16 is pivotally supported in the middle of the extension line of the roller row 13 so as to be rotatable up and down with respect to the mounting plate 2. A rod of an electric cylinder 17 provided on the non-transfer side of the stopper 16 is connected to the stopper 16.

When the electric cylinder 17 is extended, the stopper 16
is held upright to prevent the works Wl, W2 from falling from the base l to the transfer side, and when contracted, is rotated forward and evacuated from the passage of the works Wl, W2.

As shown in FIG. 4, the ground station host computer 18
When the cart V reaches the work starting point and collection point of the production line, it outputs a command signal to the vehicle controller 19 via the optical communication device 30, and the controller 19
drives the electric motor ~1 for rotating each transfer roller 5°I2, and contracts the electric cylinder 17 which is in the extended state. Further, the host computer 18 maintains the electric cylinder 17 in an extended state via the controller 19 when the trolley V is running.

When the cart V reaches the work starting point or collection point, the belt conveyor starts to move according to a command from the host computer 18. At this time, when the movable stopper 16 is rotated by the contraction of the electric cylinder 17 and the workpiece Wl is conveyed from the belt conveyor to the cart V side at the work starting point, the workpiece W1 enters into both guide rails 8 that spread outward. However, the guide rail 8 prevents the movement direction from shifting.
It is transferred onto the 10th row row 7 while preventing the posture from being distorted, and the fixed stopper 15 is moved by the rotation of the transfer roller 5.
It is moved to the non-transfer side until it comes into contact with . Then, according to a command from the host computer 18, the electric cylinder 17
is extended, and the movable stopper 16 is held upright to prevent the workpiece W1 from falling to the transfer side, and the cart V starts traveling.

Also, when a small workpiece W2 is conveyed from the belt conveyor to the cart V, the workpiece W2 has both front and rear ends facing the rollers 1.
It is controlled to be oriented in a predetermined direction by the enlarged diameter portion 14 of No. 2, and is transferred onto the second roller row 13 by the rotation of the rollers 12 while avoiding distortion of the posture.

In addition, at the collection point, the motor M is driven to rotate in the opposite direction to that described above, and the transfer rollers 5 and 1 rotate in a reverse direction accordingly.
2, the works Wl and W2 are sent from the vehicle to the conveyor by passing above the movable stopper 16 which is in the retracted position.

As described above, in this embodiment, a pair of first roller rows 7 are provided at the front and rear of the mounting plate 2 and spaced apart from each other in the left and right directions, and a roller is also provided at a lower position inside the first roller row 7. A second row of rollers 13 spaced apart from each other is provided. When transferring a large workpiece W1 between the cart V and the conveyor, the workpiece W1 is guided by the guide rail 8 whose longitudinal width and separation width are almost the same, and does not interfere with the second roller row 13. The structure is such that it can be transported as follows. When a smaller workpiece W2 is to be transported instead of the workpiece W1, the rollers 12 constituting the roller row 13 are placed on the second roller row 13, which occupies a width that is almost the same as the front-to-back width of the workpiece W2. Workpiece W at expanded diameter part 14
2.

Therefore, using the same trolley V, two
It becomes possible to transfer two works Wl, W2 to and from the conveyor, and there is no need to prepare carts V according to the sizes of the works Wl, W2.

Further, when the cart V is running, the workpiece W1 supported on the first roller row 7 has its front and back walls facing each other from the guide rail 8, and the workpiece W2 has both its front and rear ends facing the rollers 1.
By being pressed by the enlarged diameter portion 14 of No. 2, back and forth wobbling is prevented.

As a result, both the works Wl and W2 are held in a stable state when the trolley V travels.

Note that this invention is not limited to the above-described embodiments; for example, it is possible to provide three or more pairs of guide means constituted by the above-mentioned guide rail 8 and the enlarged diameter portion 14 of the roller 12. Any changes are possible without deviation.

[Effects of the Invention] As described in detail above, the present invention exhibits the effect that it can be used to convey objects of different sizes and is excellent in versatility.

[Brief explanation of drawings]

Fig. 1 is a side view showing the automatic guided vehicle according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a block circuit diagram showing the electrical configuration, and Fig. 4 shows the state of the automated guided vehicle on the production line. 5 is a side view showing a conventional automatic guided vehicle, and FIG. 6 is a plan view of FIG. 5. Workpieces Wl and W2 as objects to be transported, guide rail 8 as a guide means, and enlarged diameter portion 14°

Claims (1)

[Claims] 1. In an unmanned guided vehicle running on a production line with objects loaded thereon, objects of different sizes to be transferred between the vehicle and an external transfer device are mounted on the top of the vehicle. A plurality of pairs of guide means for guiding and having different separation distances depending on the size of the conveyed object to be guided are installed at a height that does not interfere with conveyed objects other than the conveyed object to be guided when they are transferred. A guide device for conveyed objects in an unmanned guided vehicle.