JPH0411341B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a suction conveyance device for panel-shaped materials,
More specifically, the present invention relates to a suction and conveyance device for panel-shaped materials that utilizes the suction effect of a vacuum pump and the negative pressure generated in the contraction section.

(Prior art) Generally, in order to convey panel-shaped materials, a device is used in which a handling section at the tip of the loader is equipped with a mechanism or cups connected to a vacuum pump, which are brought into close contact with the surface of the workpiece and conveyed by suction. It is being

However, when a panel-shaped material is suspended and transported laterally using this type of conveyance device, the material temporarily becomes unable to follow the material due to its inertia at the start and end regions, but an oil film forms on the surface of the material. If the material is made of a material with uneven surfaces or holes, the cup may become misaligned in such a case. The cup does not lose its airtightness, and as a result, the suction force of the other cups communicating with each other is reduced, resulting in problems such as dropping of the material during conveyance.

(Purpose) The present invention was made in view of such problems,
The purpose is to provide a new device that can reliably suction-hold and transport panel-shaped materials by adding a few additional features.

(Means for Achieving the Object) That is, the present invention provides a suction and conveyance device for panel-shaped materials to achieve the above-mentioned object, in which a part of the suction means for the panel-shaped materials is connected to a negative pressure generating means through a switching means. A first system that selectively communicates with either one of the pressure generating means, and a second system that communicates a ventilary adsorption means other than the adsorption means with an ejector that generates negative pressure using gas from the positive pressure generation means. A system is provided, and the ventilized adsorption means is communicated with the first system extending from the switching means to the adsorption means via a check valve.

(Example) The details of the present invention will be described below based on illustrated examples.

The loader indicated by reference numeral 1 in the figure is provided with a two-position switching valve 2 driven by a solenoid SOL, one input port of this switching valve 2 is connected to a pipe 4 connected to a vacuum pump 3, and the other input port is connected to a pipe 4 connected to a vacuum pump 3. They are respectively connected to pipes 7 which extend through the first regulator 5 to an air supply source 6, and to the output ports extend through a pressure switch 9 to a female fitting 10 provided at the connection with the handling 20. A main pipe 8 is connected to constitute a first panel suction system.

On the other hand, the pipe 7 connected to the air supply source 6 has
A ventilator tube 27 in the handling 20 that constitutes an exictor in front of the first regulator 5
The branch pipe 11 connected to the branch pipe 11 branches.
constitutes a second panel suction system that extends via the second regulator 12 to a male joint 13 provided at the connection with the handling 20.

On the other hand, the reference numeral 20 in the figure is a handling device configured according to the shape of the panel to be lifted, and a collection pipe 2 constituting the first panel suction system is installed on the bottom surface of the handling device.
Several suction cups 22 . In addition, one or two ventilly suction cups 24 are provided at positions corresponding to curved portions of the panel W to be hung.

This ventilly type suction cup 24 uses the negative pressure generated in the condenser part to suction the panel. The cup 24 is connected to the condenser section of the ventilary pipe 27 connected thereto, and at the same time, the cup 24 is connected to the collecting pipe 21 via a check valve 28.

In the device configured in this way, each joint 2 of the handling 20 is now connected according to the shape of the panel W.
3, 26 to the joints 10, 26 of the loader 1,
Each cup 22..., 24 at the lower end is brought into close contact with the surface of the panel W to be lifted, and SOL is energized. As a result, the two-position switching valve 2 is switched to the suction side, and in the first panel suction system, the suction force of the vacuum pump 3 is transmitted to each suction cup 22 through the main pipe 8 and the collecting pipe 21.

On the other hand, in the second panel adsorption system, air flows from the air supply source 6 into the ventilate pipe 27 via the branch pipe 11 and the joints 13 and 26, so that the ventilic pipe 27 has a flow velocity at its contraction section. A negative pressure proportional to is generated. By the way, this negative pressure is adjusted by a second regulator provided in the middle of the branch pipe 11 so that it corresponds to the suction force of each suction cup 22... A similar suction force acts on 24 as well.

Then, each of these suction cups 22..., 24
When the panel W is suspended and moved in the horizontal direction, the panel W, which cannot follow this movement at its starting and ending ends, is moved to the cup 22...
However, as mentioned above, since the ventilly suction cup 24 is provided near the curved part of the panel W, this positional shift causes the ventilly suction cup 24 to touch the curved part, etc. Even if the airtightness of the suction cup 24 is compromised, the cup 24 is constantly affected by the negative pressure generated at the contraction section of the ventilary tube 27, so its suction force does not decrease significantly and the panel W can be secured securely. Continue to hold it.

After placing the panel W in a predetermined position,
When the power to the solenoid SOL is cut off, the two-position switching valve 2 connects the air supply source 6 and the main pipe 8, and sends the air whose pressure has been regulated by the first regulator 5 from the main pipe 8 to the collective pipe 21 via the joints 10 and 23. The weak springs 28
Through the check valve 28 energized by the ventilator suction cup 24, more air than that sucked by the ventilate tube 27 is sent to the panel W.
release the suction.

In addition, during the transportation process, all suction cups 2
2... is suctioning the panel W normally or not by checking the pressure switch 9 installed on the main pipe 8 on the loader 1 side.
to convert it into electrical output and detect it.
The suction holding state of the ventilly suction cup 24 is not particularly detected, and instead, the minimum number of ventilly suction cups 24 is provided as a backup within the limit without complicating the attachment/detachment operation of the handling 20 or the structure. You can do it like this.

(Effects) As described above, according to the present invention, a first system for selectively communicating either the negative pressure generation means or the positive pressure generation means via the switching means is provided in the suction and conveyance device for panel-shaped materials. Since a second system is provided that connects the system and the ejector, which generates suction pressure with gas from the positive pressure generating means, to a ventilly type adsorption means other than the above-mentioned adsorption means, when lifting and transferring the panel-shaped material, Even if there is a misalignment between the panel material and the suction means that hold it by suction, and a part of these suction means leaks airtight, the ventilate suction means that communicates with the second system will not close inside the ejector. The negative pressure can reliably attract and hold the panel material and prevent it from falling off.

Moreover, since this ventilly type suction means is connected to the first system through the check valve, the switching means is operated to release the suction of the panel material.
When the gas from the positive pressure generating means is introduced into the first system, this ventilure type adsorption means can be easily separated from the panel-shaped material in the same way as the adsorption means connected to the first system. By adding a few configurations to the suction and conveyance device, it is possible to reliably suction and convey the panel-shaped material.

[Brief explanation of drawings]

The drawing is a circuit diagram of a device showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Loader, 2... Two-position switching valve, 3... Vacuum pump, 6... Air supply source, 20... Handling, 22, 24... Cup, 27... Venture tube, 28... Check valve, W...Panel.

Claims (1)

[Claims] 1. A first system that selectively communicates a part of the adsorption means for the panel-like material with either the negative pressure generation means or the positive pressure generation means via the switching means, and the gas from the positive pressure generation means. A second system is provided which communicates a ventilary type adsorption means other than the adsorption means to the ejector that generates negative pressure, and a second system is provided which connects the ventilium type adsorption means from the switching means to the adsorption means via a check valve. A suction and conveyance device for panel-shaped materials, characterized in that the device is connected to the system.