JPH04133918A - Catching method for stacked sheet member and its device - Google Patents

Abstract

PURPOSE:To make collective catching of stacked sheet members possible in a device for a printed wiring board or the like by making gaseous attracting force act on the upper face of the top sheet member of the stacked thin sheet members, and making high speed gaseous flow flowing upward act on the sides of the sheet members except the top sheet member. CONSTITUTION:A catching apparatus body 11 is set over the top sheet member S1 of the stacked sheet members S1-Sn, and air inside the catching apparatus body 11 is discharged through an intake port 11c. The top sheet member S1 is thereby drawn to the back face of a flow passage forming plate 11d to adhere to it, and the sheet members S1-Sn being opposite to a surrounding side wall 11b through a passage P2 among the sheet members lower than the top sheet member S1 are simultaneously mutually drawn to the sheet member locating on the nearest upper side to adhere to it. Thus, the plural stacked sheet members can be wholly caught at a time.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for laminating sheet materials having easily damaged surfaces such as copper foil layers formed on the surfaces of printed circuit boards, etc. The present invention relates to a grasping method and device that can grasp the entire body without damaging it.

[Prior Art] Conventionally, suction pads have generally been used as grippers for sheet materials.

[Problems to be Solved by the Invention] However, the conventional gripping tool for sheet materials using suction pads cannot be said to be very rational in terms of workability because it can only grip the sheet materials one by one.

In order to grasp multiple pieces of leaf material together in a stacked state, it is a good idea to use a grip that grasps the stacked leaf materials from both sides at once. If a load is applied to each sheet material from its side, the side edges of each sheet material may be damaged or bent in the middle, causing damage. There is a problem that it cannot be used depending on its surface condition.

In view of this point, the present invention has a plurality of laminated leaf materials,
The purpose of this work was to develop a gripping method and device that can grip objects at once by utilizing vacuum suction force and suction adhesion force generated by high-speed gas flow.

1. Means for Solving the Problem] The structure of the method of the present invention, which was made to solve the above problem, is to
A gas suction force is applied to the upper surface of the uppermost leaf material, and a high-speed air current flowing in one direction is applied to the leaf materials other than the highest binary material. Accordingly, the above-mentioned laminated sheet materials are lifted simultaneously, and the device has a structure that includes a top wall that covers the upper surface and peripheral side of the plurality of laminated sheet materials; A small gap is formed between the circumferential side surface and the side wall of each sheet material, and a small gap is formed between the peripheral side surface and the side wall of each leaf material, and The upper wall forms a suction surface to form a canopy-shaped grip body,
An air suction port is formed in communication with the suction surface of the upper wall of the grip main body, and the main body is formed to be movable up and down by an appropriate stamping means, and the grip main body is laminated with sheets of sheet material. By sucking air from the air suction port, high-speed air is caused to flow upward from the circumferential side of each sheet material and the inner wall of the clipper body from between the circumferential side surface of each sheet material and the inner wall of the gripping tool body. The sheets are brought into close contact with each other, and the topmost of these sheets is suctioned and brought into close contact with the lower surface of the suction surface of the upper wall of the grip main body, thereby removing the stacked sheets. It is characterized by being held by the grip body and being raised and lowered.

[Function] In the grip that can carry out the method of the present invention, the upper wall whose lower surface is formed as a suction surface suctions the uppermost one of the stacked sheets by the suction action acting on it. and hold it tightly against the top wall.

Moreover, in the above-mentioned grip, the grip is formed between the inner surface of the circumferential side wall and the circumferential side of the stacked confectionery, and is connected to the suction surface of the above-mentioned upper wall, or is provided with another air suction system. A suction force similar to the suction force that acts on the suction surface of the top wall in 1. works in the micro gaps that communicate with the top wall, and a high-speed air current flows, so the air between the stacked sheets is sucked. The sheets are then brought into close contact with each other by suction.

Thereby, the grip main body can simultaneously grip a plurality of laminated sheets as they are.

[Example] Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side sectional view explaining the principle of the gripping method of the present invention;
FIG. 2 is a side sectional view of an example of the apparatus of the present invention, FIG. 3 is a bottom view thereof, and FIG. 4 is a separate side sectional view.

In FIG. 1, reference numeral 1 denotes a canopy-shaped body forming the grip body of a gripping device capable of carrying out the method of the present invention, which has a shallow side wall 1b formed around a flat upper surface member 1a.
It is formed by providing an air intake port 1C for exhaust at the center of the surface member 1a.

Now, inside the circumferential wall 1b of the main body 1, there are sheets S, S, which are slightly smaller in size and thinner than the upper surface member 1a.
position.

At this time, there are , It is assumed that a small gap g,, g,, g, through which air can circulate is formed.

When air is drawn from the suction port IC in this state, the air flows through each gap g, to g, as shown by the arrows in the figure. In other words, the air that was in the gap g3 between the sheets S, , S is sucked out by the high-speed airflow caused by the air suction, and the sheets S, , S are brought into close contact with each other, and the gap g3 disappears. In addition, since the sheet material S1 with which the sheet material S2 is in close contact with the sheet material S2 is vacuum-suctioned and brought into close contact with the inner surface of the upper surface member 1a, the above-mentioned canopy-like main body 1 can simultaneously grasp the sheet materials S, , S, It will play the role of a pad. Incidentally, the above phenomenon can be clearly confirmed from Bernoulli's theorem.

The gripping device of the present invention is an application of the above principle.

An example of its application will be explained with reference to FIGS. 2 to 4.

In FIGS. 2 to 4, reference numeral 11 denotes a canopy-shaped grip main body, which here includes an upper surface member 11a having a rectangular plane, a circumferential side wall 111 provided around it, a sheet material S, and an upper surface member 11a. Face plate 11a
A flow path forming plate 1kl, which is slightly smaller than the upper surface member 11a, is disposed on the back surface of the upper surface member 18 to form an air flow path P between the upper surface member 11a and a small gap that will become the flow path P1. ing. Incidentally, since almost the entire surface of the flow path forming plate lid is used as an adsorption surface, small holes P for air circulation are formed.

llc is an intake port.

On the other hand, in order to form an air circulation part P2 of, for example, about 1 m between the inner surface of the peripheral side wall 11b and the outer peripheral side of each sheet material S1 to Sn, a spacer Il is provided on the inner surface of the side wall 11b.
e is stepped toward the inner surface at appropriate pitches.

In this embodiment, since the entire surface of the flow path forming plate lid is an adsorption surface and an air passage, it is sufficient that the flow path forming plate lid has approximately the same size as the planar shape of the sheet material S.

The following parts 11a to 11 constitute an example of the gripping device of the present invention, and an example of its use will be described next.

The grip main body 11 of the apparatus of the present invention is positioned so as to cover the second sheet S1 of the stacked sheets S, -Sn. In this state, if you exhaust from the intake Dllc,
- At the same time, the leaf materials S of the soil are brought into close contact with the back surface of the flow path forming plate lad, and at the same time, among the leaf materials S2...Sn located under the leaf materials S1, Channel P on side wall +11)
2, the corresponding sheet materials S1 to Sn-m are brought into close contact with the sheet materials located immediately above each other by suction, so that all of the predetermined number of the plurality of laminated sheets 42 are It is held as if it were grabbed by the grip main body 11.

Therefore, by lifting and moving the grip main body 11, the sheets can be gripped and handled in units of a predetermined number.

As an example of the sheet material to be grasped by the device of the present invention, 100
There is a PC board with a rectangular shape of 0 mm square and a thickness of about 0.9 to 1 mm.

” In the above-described device of the present invention, the above-mentioned PC board is, for example,
In order to grip the PC board in units of 10 PC boards, the peripheral side wall 11b is formed to correspond to the thickness of the 10 PC boards. The number of peripheral walls 111 to be gripped at the same time is arbitrary.

After lifting and moving the sheet materials held together as described above, lower the grip main body 11 to the ground and stop the plowing from the air intake port 11c.
At the same time as the close contact between 1d and the sheet material S1 is released, the close contact between the respective sheet materials is also released.

The gripping device of the present invention described above may be constructed as shown in FIG. In FIG. 4, the same members as in FIGS. 2 and 3 are designated by the same symbols.

In the apparatus shown in FIG. 4, the circumferential side wall 11b is fixed to the upper surface member 11a via the hinge Ilf, so that each of the four circumferential side walls 11b can be freely opened and closed, and the sheet materials S, to Sn can be opened and closed. It is designed to be easy to handle.

Moreover, in the present invention, by configuring the position of the peripheral side wall 11b to be able to be displaced by plane coordinates "2" according to the size of the laminated sheet material to be grasped by the grasping device, grasping objects having different plane sizes, i.e. A single gripping device can handle sheet materials. The displacement of the peripheral wall 11b is
Each peripheral side wall of all four circumferences, or at least two orthogonal peripheral side walls]1. b can be displaced and fixed by a cylinder or the like.

Furthermore, the present invention includes an exhaust (air intake) system for sucking in the uppermost leaf material, and a high-speed air flow that flows upwardly around the outer periphery of the laminated sheet material located below this sheet material. It is easier to ensure high-speed airflow by forming the exhaust (intake) system and the exhaust system separately.

〔Effect of the invention〕

The present invention is as described above, and by applying an air suction effect to the inner surface of a canopy-shaped grip main body of a plurality of laminated sheet materials, the above-mentioned suction effect can be applied to a plurality of laminated sheet materials. At the same time, the remaining sheet materials are adsorbed to each other by the venturi effect caused by the suction action, whereas previous grips using vacuum suction could only hold one sheet of sheet material. Since a plurality of sheets can be held at once in a stacked state, work efficiency is extremely high.

In addition, the device of the present invention does not apply a gripping load to each leaf by the gripper body, so it is extremely useful for handling sheet materials in bulk whose surfaces and sides should not be soiled.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view explaining the principle of the gripping method of the present invention;
FIG. 2 is a side sectional view of an example of the apparatus of the present invention, FIG. 3 is a bottom view thereof, and FIG. 4 is a separate side sectional view. jl...grip body, Ila...upper surface member, ll
b... Circumferential wall, Ilc... Suction port, l1cl...
Channel forming plate, Ice...spacer, S1~Sn...sheet material

Claims (1)

[Claims] 1. For stacked thin sheets having the same planar shape, a gas suction force is applied to the upper surface of the uppermost sheet, and the uppermost sheet A method for grasping laminated sheet materials, characterized in that the laminated sheet materials are simultaneously lifted by applying a high-speed airflow flowing upward to the side surfaces of the other sheet materials. 2 A top wall and a side wall are formed to cover the upper surface and peripheral side of a plurality of laminated leaf materials, and the peripheral surface and the side wall are formed on the peripheral surface of each leaf material. At the same time, a small gap is formed between the uppermost leaf material and the upper surface wall forms a suction surface for the top surface of the uppermost leaf material to form a canopy-shaped grip body, while the upper surface wall of the grip body An air suction port is formed in communication with the suction surface of the grip, and the main body is formed to be able to be raised and lowered by appropriate lifting means. By suctioning air from above, high-speed air is circulated upward from the circumferential side of each sheet material and the inner wall of the gripping tool body, and the sheets are mutually moved. At the same time, the topmost of these sheets is brought into close contact with the lower surface of the suction surface of the upper wall of the grip body, and the stacked sheets are held by the grip body. A gripping device for laminated sheet materials, characterized in that it is capable of moving up and down. 3. The inner peripheral surface of the peripheral side wall of the canopy-shaped grip main body is provided with a spacer protruding from the inner surface side in order to ensure a substantially uniform desired minute gap with the entire peripheral side surface of the laminated sheet materials. 3. The gripping device of claim 2. 4. The grip device according to claim 2 or 3, wherein the peripheral side wall of the grip main body is formed to be openable and closable with respect to the side surface of the sheet material. 5. The grip device according to claim 2, wherein the peripheral side wall of the grip main body is provided with a mechanism that can be displaced by a slide or the like to accommodate the size of the sheet material.