JPS5917705B2 - Plate-shaped object transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for transferring a large number of plate-like objects, particularly plate glasses, loaded in an inclined position on a mobile cart onto a horizontal conveyor.

Conventionally, a device for moving plate glass, which was loaded in an inclined position onto a horizontal conveyor, was developed in 1973.
No. 107, Actual Publication No. 51-10549, Special Publication No. 52-1
As seen in No. 184, an arm having a plate glass suction tool is used to suction a plate-like object in an inclined position, so that the surface to be attracted to the plate-like object becomes the upper side when being transported by a horizontal conveyor. This was a device that rotated the plate glass to the top of the horizontal conveyor, and then released the suction tool 5 above to drop the plate glass onto the horizontal conveyor.

However, in such a device, the falling distance when released above the horizontal conveyor is a problem; if the distance is too large, the plate glass may break due to the impact of falling or lose its posture on the conveyor; If too much is used, the plate glass will be pinched by the conveyor and the suction tool, causing scratches on the plate glass.

In addition, in the conventional device, the surface of the plate glass to be attracted by the suction tool is the upper surface when it is transported by the horizontal conveyor, so the suction effect is uncertain when a pattern is applied to one side, such as with patterned glass. Therefore, this surface is not suitable as the surface to be attracted, and therefore, since this surface becomes the lower surface for conveyance, it is necessary to reverse the sheet glass using a reversing device when coloring or other processing is performed on the patterned surface. The present invention is a transfer device that eliminates the above-mentioned defects of conventional devices, and one embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 designates a frame, and a plurality of horizontal conveyor belts are stretched in parallel on a frame 2 between a rotary shaft 3 and a pulley 25 (not shown) of a bracket 4.

The horizontal conveyor belt 1 is rotated by an electric motor (not shown) that transmits power to a sprocket 5 attached to a rotating shaft 3 via a chain (not shown).
The plate-shaped body is conveyed in the direction of arrow s. A horizontal shaft 6 is rotatably supported by a bearing 7 on a frame 2 below the rear end of the horizontal conveyor belt 1, and a rotating arm 8 that fits into the gap between the horizontal conveyor belts 1 is attached to the horizontal shaft 6. One end of the arm 35 is connected to an air cylinder 9 installed on the pedestal 2 as a source for rotating and driving the rotating arm 8. A suction pad 11 that is expanded and contracted by an air cylinder 10 is attached upwardly to the rotating arm 8 by a plurality of brackets 12.The suction pad 11 is connected to a vacuum source generator 13 and a compressed air generator 14 These two devices 13 and 14 are connected via a switching valve 15 via a flexible hose or the like.
16 is pallet 1 loaded with plate-like objects G in an inclined position.
This is a rail that guides the movable cart 18 on which 7 is placed.

The movable cart 18 is moved back and forth by a hydraulic cylinder 19 provided under the pedestal 2. Next, the operation of this device will be explained with reference to FIG.

When the hydraulic cylinder 19 connected to the hydraulic pressure supply device 20 through the electromagnetic switching valve 21 is shortened and the moving carriage 18 moves forward, the phototube switch 22 is activated. When this phototube switch 22 is operated, the electromagnetic switching valve 21 is switched, the movable trolley 18 is stopped, and the electromagnetic switching valve 23 is activated, and the air cylinder connected to the compressed air generator 14 via the electromagnetic switching valve 23 is activated. By shortening 9, the rotating arm 8 rotates and stops at the same angle as the inclination angle of the glass plate G. At this time, the position of the phototube switch 22 is determined so that the front surface of the glass plate G and the suction pad 11 of the rotating arm 8 are separated by a predetermined distance. When the rotation stop confirmation limit switch 24 is activated, the electromagnetic switching valve 25 of the air cylinder 10 communicating with the compressed air generator 14 is activated, and the air cylinder 10 is turned off and communicates with the vacuum generator 13 to enter the suction state. The worn suction pad 11 is pressed against the front surface of the plate glass G to suction it. When the adsorption is completed, the vacuum switch 26 is activated and the electromagnetic switching valve 25 is activated.
When the air cylinder 10 is switched, the air cylinder 10 is shortened and the plate glass G is peeled off. When a large number of glass plates G are in close contact with each other, the operation of the electromagnetic switching valves 25 provided in each of the air cylinders 10 is delayed by a timer (not shown) sequentially from the side edges of the glass plates G. If the suction pad 11 is operated so as to be peeled off from one end of the glass plate G, each sheet can be reliably sampled. When the plate sampling is completed, the limit switch 27 is operated, and this operation causes the electromagnetic switching valve 2
3, the switching square cylinder 9 extends and the rotating arm 8 starts rotating in the opposite direction. Then, the rotating arm 8 reversely rotates on the horizontal conveyor 1 to change the plate glass G from the vertical position to the horizontal position, and when the plate glass G and the conveying surface of the horizontal conveyor belt approach each other at a predetermined distance, the rotating arm 8 switches the limit switch 28.
The switch valve 15 is operated to communicate with the compressed air generator 14, and compressed air is blown from inside the suction pad 11, thereby releasing the glass plate G and placing it on the horizontal conveyor belt 1. At this time, when the plate glass G is completely placed on the horizontal conveyor belt 1, the rotating arm 8 is temporarily stopped, and then the suction pad 11 is rotated below the horizontal conveyor belt 1 while blowing compressed air. Then, the horizontal conveyor belt 1 may be driven to convey the plate glass G, but when the rotary arm 8 rotates and the horizontal conveyor belt 1 approaches the plate glass G that is being sucked, compressed air is blown to convey the plate glass. If G is placed on the horizontal conveyor belt 1 in a state slightly lifted from the surface of the suction pad 11 and the conveyor belt is driven, there is no need to temporarily stop the rotating arm 8, and the time from release to conveyance can be shortened. This is preferable because it can be shortened and also prevents scratches or scratches caused by the belt when placed on the horizontal conveyor belt 1. When the placement of the glass plate G is completed, the limit switch 29 is activated to operate the drive motor 30 of the horizontal conveyor belt 1 to transport the glass plate G.

When the conveyance of the plate glass G is completed, the limit switch 31 is activated to return the switching valve 15 to the adsorption state and switch the electromagnetic switching valve 21, and the moving cart 18 moves forward by a distance corresponding to the thickness of the plate glass (to the position of the phototube switch 22). and stop. After that, the rotating arm 8 rotates and stops again at the same angle as the inclination angle of the glass plate G, and the suction pad 11 presses against and attracts the glass plate G, repeating the same operation as described above.
By repeating this operation, each sheet of glass G loaded on the repallet 17 is sampled and transferred to the horizontal conveyor belt 1.
Transferred to. As described above, the present invention provides a rotating arm that is rotatable around a horizontal horizontal axis provided on a frame of a plurality of horizontal conveyors arranged in parallel in a direction transverse to the transfer direction. A plate-shaped body is mounted on the rotary arm with a suction cup facing upward, and the plate-shaped body loaded in an inclined position on a movable trolley that moves back and forth with the guide of the rail is sucked by the suction cup, When the rotary arm is rotated and the plate-like object and the horizontal conveyor reach a predetermined distance, the limit switch is actuated by the rotary arm, the suction of the suction cup is released, air is blown out, and the plate-like object is By transferring the body to the horizontal conveyor in a suspended horizontal state, the adsorbed surface of the plate-like body is placed on the horizontal conveyor, making it extremely easy to color the plate-like body with a pattern on one side, and eliminating the need for a reversing process. This shortens the process, and since the plate is placed on the horizontal conveyor in a state slightly floating above the suction cup, the surface to be attracted by the plate can be easily removed even while the horizontal conveyor is in operation. In addition, since the switching between suction release and air jetting is performed based on the close distance between the plate-like object and the horizontal conveyor, compared to the case where switching is performed based on time, the soft adhesion is reduced. This has the excellent effect of making the placement smooth and reliable, and making it possible to obtain a plate-shaped body of high quality.

[Brief explanation of the drawing]

FIG. 1 is a plan view of one embodiment of the present invention, and FIG. 2 is a partially sectional side view of FIG. 1. FIG. 3 is an explanatory diagram showing the control mechanism. 1...Horizontal conveyor belt, 8...Rotating arm, 11...Suction cup.

Claims (1)

[Claims] 1. Plates are loaded in an inclined position at separate positions of horizontal conveyors arranged in parallel, and a movable cart that moves back and forth guided by rails is provided, and between the horizontal conveyors,
Rotating arms are disposed along these conveyors and rotate in and out of the conveyor conveyance surface, and rotate back and forth between the moving cart and the horizontal conveyor. A suction cup that switches between and communicates with a compressed air source and a vacuum source is attached upward, and a position of the rotary arm at which the plate-like body attracted to the suction cup and the horizontal conveyor are close to each other at a predetermined distance from each other is detected. A plate-like object transfer device equipped with a switch that switches a switching valve from a vacuum source to a compressed air source.