JPH06155414A - Sheet stacking device - Google Patents

Abstract

PURPOSE:To automate the stacking of thin sheets by holding the sheets in a suspended state by an adsorbing jig sucking the sheets by injecting air to hold them in a non-contact state floated in air to stack the sheets on a substrate. CONSTITUTION:The high pressure air C sent to an absorbing jig A is supplied from an air send-in port 8 and injected toward the sheet 1 close to an operation surface 9 through a cushioning chamber 10. Therefore, the cushioning chamber 10 becomes negative pressure to suck the sheets and, when the gap between the operation surface and the sheets is reduced, the sheets are pushed down and the adsorbing jig A suspends and holds each sheet in a state floated and suspended in air without coming into contact with the sheets 1. The adsorbing jig. A is moved to the substrate 2 standing by on a conveyor 6 by a moving device 4 to be aligned to be opened and stacked on the substrate 2. The stacked sheets 1 are sent to a press 7 to be closely bonded. Therefore, the laminating work of thin films or air permeable sheets 1 can be automated.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a process of laminating a decorative plate and a substrate in a plywood manufacturing process, a breathable sheet such as a protective film laminating process, and a process of laminating or superposing thin sheets. The present invention relates to a sheet stacking device.

[0001]

2. Description of the Related Art In a plywood manufacturing process, sheets such as a decorative plate to be attached to the surface of a substrate are stacked and placed in order from the top to produce a plywood. Was there.

Sheets such as decorative plates are breathable, thin and fragile, so they cannot be adsorbed by a vacuum adsorption pad, and it is difficult and mechanically to grip them one by one. I grabbed it and lifted it up and carried it to the substrate 2 and stuck it together.

[0003]

With the progress of work speed, homogenization of products, and labor shortage, it has become difficult to manually perform plywood and other stacking work.

Particularly in the process which is a problem in the manufacturing process of plywood and the like, since sheets such as laminated decorative plates are breathable, thin and brittle, they cannot be adsorbed by a vacuum adsorption pad, and mechanically 1 Since it is difficult and fragile to grab each piece, it was difficult to mechanize this process and automate it.

The problem to be solved by the present invention is to suck the uppermost sheet by using an adsorbing tool that grasps and lifts thin and fragile laminated sheets one by one by breathing,
It is an object of the present invention to provide a sheet stacking apparatus that automates a sheet stacking operation of transferring and stacking sheets on a substrate.

[0006]

In order to solve the above-mentioned problems, the sheet is sucked by ejecting air, and the sheet is suspended and held by a suction tool which is held in a non-contact state floating in the air, and is aligned. This can be solved by a sheet superposing device for superposing the sheet on the substrate.

[0007]

When air is ejected from the adsorbing tool toward the laminated sheets, the average pressure in the space between the adsorbing surface and the sheets falls below atmospheric pressure, and the uppermost sheet of the laminated sheets is sucked. It floats up in the air and is suspended and held with a gap in the suction tool.

Since a guide for restricting the movement of the held sheet is attached to the suction tool, the suction tool and the held sheet move integrally.

The suction tool is mounted on a transfer tool that can move up and down, and left and right. The sheet suspended and held by the suction tool moves onto the substrate, and after aligning, the sheet is released from the suction tool and placed on the substrate. Can be overlaid.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of the sheet stacking apparatus of the present invention.

The sheet 1 is a decorative sheet of plywood, a thin sheet of paper, a plastic film or the like, or a breathable sheet.

2, 3 and 4 show a suction tool A used in the present invention.

The suction tool A is the same as the patent No. 1563948 and the Japanese Patent Application No. 4-220657 which are related to the inventor of the present invention.

As shown in FIGS. 2 and 3, the adsorbing tool A is provided with a peripheral wall portion 11 facing downward around an upper portion 15 provided with an air inlet 8 to which high-pressure air C is supplied, and a cushion chamber 10 inside. The lower part of the bowl-shaped base M formed is opened, and the lower end of the peripheral wall 11 is provided with an operating surface 9 which is wide and continuous in the direction of the peripheral wall 11.

A blower and a compressor are connected to the air inlet 8 via a pipe line.

The high-pressure air C sent from the blower and the compressor through the pipeline is sent from the air inlet 8 to the cushion chamber 10.
Is ejected toward the sheet 1 passing through the sheet 1 and close to the operating surface 9.

During this time, when the distance between the operating surface 9 and the seat 1 is large, the space formed by the operating surface 9 and the seat 1 and the cushion chamber 10 function as a diffuser and a vacuum chamber of the ejector, respectively. Cushion room 10
Becomes negative pressure.

At the same time, the air flow passing through the gap between the operating surface 9 and the sheet 1 is accelerated, and the downward pressure in the gap is reduced, and both become the suction force for sucking the sheet 1.

On the other hand, when the seat 1 is sucked and the distance between the operating surface 9 and the seat 1 becomes small, the cushion chamber 10 functions as a pressure chamber type air cushion, and the pressure in the void rises to push down the seat 1.

In this way, the suction tool A can suspend and hold the sheet 1 in a state of floating in the air without contacting the sheet 1.

In FIG. 1, the laminated sheets 1 are placed on a lifter 5 which can be moved up and down, the lifter 5 is raised, and the uppermost sheet 1 is attached to the transfer device 4 by a suction tool A. When the advancing distance is increased, the high-pressure air C is supplied to the adsorbing tool A, and when it is ejected toward the sheet 1, the uppermost sheet 1 floats, is sucked by the adsorbing tool A, and is suspended and held.

The transfer device 4 has a mechanism capable of moving back and forth and left and right, and can position the sheet 1 suspended and held by the suction tool A.

A guide 13 is attached to the suction tool A, and free movement of the sheet 1 held by the suction tool A is restricted by the guide 13.

The sheet 1 held and transferred to the suction tool A by the movement of the transfer device 4 moves onto the substrate 2 waiting on the conveyor 6, is aligned, and is released onto the rear substrate 2, It is superposed on the substrate 2.

The superposed sheet 1 and substrate 2 are sent to the press 7 by the conveyer 6 and brought into close contact with each other, and further sent to a heater (not shown) to complete the sheet superposing work.

In addition to this embodiment, the suction tool A is not limited to this example.
7, JP-A-62-251094, Japanese Patent Application No. 4-4807
7, Japanese Patent Application No. 4-82814, Japanese Patent Application No. 4-180409,
Japanese Patent Application No. 2-203858, which has an air retainer or a flat plate provided with an air ejection port, a Berne-Ichuck provided with a funnel-shaped air ejection port, or an air suction port provided on a pad, for uniformly sucking air from the surroundings. It may be a suction tool.

Further, a mechanism having a positioning function and a feeding function is provided without aligning the sheet 1 suspended by the suction tool A, the sheet 1 is transferred onto the table, and after the alignment, the sheet 1 is sent out onto the substrate 2. Is also a good example.

[0028]

EFFECTS OF THE INVENTION According to the present invention, it is possible to mechanize and automate the work of pasting a thin film and a breathable sheet 1 in a veneer laminating process in a plywood manufacturing factory, a protective film laminating process, etc. As a result, labor saving has progressed, and it has become possible to provide a sheet stacking apparatus capable of improving product quality, improving efficiency, and reducing product cost.

[Brief description of drawings]

FIG. 1 shows a mechanism diagram of the present invention.

FIG. 2 is a side sectional view of the suction tool.

FIG. 3 shows a bottom plan view of the suction tool.

FIG. 4 is a side sectional view of another suction tool.

[Explanation of symbols]

 1 sheet 2 substrate 4 transfer device 5 lifter 6 conveyor 7 press 8 air inlet 9 working surface 10 cushion chamber 11 peripheral wall 12 baffle plate 13 guide 14 guide A adsorber C high pressure air bb @@ b u CC

Claims (1)

[Claims] 1. A sheet stacking apparatus that sucks a sheet by ejecting air, and sucks and suspends the sheet by a suction tool that holds the sheet in a non-contact state floating in the air, and stacks the sheet on a substrate.