JPH07132478A - Vacuum suction method and suction device - Google Patents

Abstract

PURPOSE:To suck and lift only the sucked material in the upper most stage positively one by one by pressing the lower face opening part of a vacuum pad to the sucked material, and after restoring the vacuum pad to release pressing force, maintaining the inside of the vacuum pad in the vacuum state. CONSTITUTION:In order to suck sucked material 8 such as a gypsum board, the A-port of an air cylinder 1 is connected being switched to a compressed air source. A piston 2 is thereby lowered, and a vacuum pad 5 is pressed to the uppermost stage of the sucked material 8 loaded in stages. The A-port is then connected being switched to the atmospheric pressure 4. Compressed air is thereby supplied into the vacuum pad 5 from another air source to release pressing force. In succession, the vacuum pad 5 is restored by compressed air, and the piston 2 is moved up. The inside of the vacuum pad 5 is kept in the vacuum state by a vacuum pump 7 so as to lift only the sucked material 8 in the uppermost stage one by one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum adsorption method and an adsorption device for adsorbing substances to be adsorbed such as stacked gypsum boards and plywood.

[0002]

2. Description of the Related Art Conventionally, in this type of vacuum suction method and suction apparatus, a vacuum pad is pressed against the uppermost object to be adsorbed. The transport device shown in FIG. 4 is an example in which this suction device is incorporated, and the operation of this device will be briefly described. First, the air cylinder 50 extends to press the separating vacuum pad 51 against the uppermost object 52 to be adsorbed. The vacuum pump 59 is operated to bring the inside of the vacuum pad 51 into a vacuum state. Air cylinder 5
0 is contracted and the uppermost object to be adsorbed 52 is lifted. Next, the air cylinder 53 is extended to set the insertion claw 54 to 1
It is inserted between the first and second objects to be attracted 52, 52. The vacuum pump 59 is stopped and the compressed air source 55 is operated to forcibly send air to the vacuum pad 51 to separate the adsorbed material 52. The air cylinder 56 is contracted to retract the air cylinder 50. Thereafter, the transfer vacuum pad 58 of the transfer device 57 is pressed against the uppermost object 52 to be adsorbed, and the inside of the vacuum pad 58 is vacuumed by the vacuum pump 60 to be adsorbed and transferred to a predetermined position.

[0003]

In the conventional example, when the adsorption target 52 is adsorbed by the separation vacuum pad 51, the uppermost adsorption target 52 and the adsorption target 52 below it are adsorbed as described above.
Since it was vacuum-adsorbed with the gap of crushed,
There is a problem that air does not flow between the objects to be adsorbed 52, 52 and two pieces are adsorbed.

Therefore, it is an object of the present invention to provide a vacuum adsorption method and an adsorption device capable of preventing the adsorption of two objects to be adsorbed.

[0005]

A vacuum suction method according to the present invention comprises a first step of pressing an opening on the lower surface of a vacuum pad made of an elastic material against an object to be sucked, and supplying air into the vacuum pad. The second step of restoring the elastically deformed vacuum pad to release the pressing force, and the third step of fixing the position of the restored vacuum pad and discharging the air in the vacuum pad to adsorb the adsorbed substance. It includes and.

In the vacuum suction device of the present invention, an air cylinder having a piston which is capable of protruding and retracting downward and fixed, and a lower surface which is attached to the tip of the piston and contacts the object to be attracted are made of elastic material. A vacuum pad, a compressed air source that supplies air into the vacuum pad while pressing the vacuum pad against the object to be adsorbed by the air cylinder to restore the elastically deformed vacuum pad and release the pressing force, and the vacuum pad. And a vacuum pump for discharging the air in the vacuum pad and adsorbing an adsorbed substance while the piston is fixed at the position where the pad is restored.

[0007]

According to the structure of the present invention, air is supplied into the vacuum pad pressed against the object to be adsorbed by the air cylinder to restore the elastically deformed vacuum pad, and the restored vacuum pad is fixed in position. Since the air inside is exhausted, the vacuum pad can perform vacuum adsorption without pressing the uppermost object to be adsorbed. Therefore, a gap is formed between the uppermost adsorbent and the adsorbent so that air can flow therethrough.
It can be surely adsorbed one by one.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIG. Reference numeral 1 denotes an air cylinder, which has a piston 2 which can be fixed so as to project downward and forward. Port A of this air cylinder 1 can be switched between compressed air source 3 and atmospheric pressure 4,
The port is at atmospheric pressure. A separation vacuum pad 5 is attached to the tip of the piston 2. The vacuum pad 5 is formed of an elastic material in a downward cup shape having an opening on the lower surface. Further, the inside of the vacuum pad 5 can be switched to an air supply state by the compressed air source 6, a vacuum state by the vacuum pump 7, and an atmospheric pressure 4.

Next, the operation of this adsorption device will be described. First, as shown in FIG. 1, the A port is switched to the compressed air source 3, the piston 2 is lowered, and the vacuum pad 5 is pressed against the uppermost stage of the stacked objects 8 to be adsorbed. In this state, the vacuum pad 5 is crushed and elastically deformed. Next, as shown in FIG. 2, the port A is switched to the atmospheric pressure 4 and compressed air is supplied from the compressed air source 6 into the vacuum pad 5 to release the pressing force. The supplied compressed air restores the vacuum pad 5 and the piston 2 rises to fix the piston 2 at this position.
Then, as shown in FIG. 3, the inside of the vacuum pad 5 is evacuated by the vacuum pump 7, and only the uppermost object 8 is adsorbed and lifted.

In this embodiment, air is supplied into the vacuum pad 5 pressed against the object 8 by the air cylinder 1 to restore the elastically deformed vacuum pad 5, and the restored position of the vacuum pad 5 is fixed. Since the air in the vacuum pad 5 is discharged, the vacuum pad 5 can perform vacuum adsorption without pressing the uppermost object 8 to be adsorbed. For this reason, a gap is formed between the uppermost adsorbed material 8 and the adsorbed material 8 so that air can flow, and the adsorbed materials can be surely adsorbed one by one.

The vacuum suction device having the above structure is
The air cylinder 50 is replaced when it is incorporated in the carrying device of FIG. That is, the air cylinder 1 is connected to the air cylinder 56, and the air cylinder 53 to which the insertion claw 54 is attached and the transfer device 57 are installed in the same configuration.

[0012]

According to the vacuum suction method and suction device of the present invention, air is supplied into the vacuum pad pressed against the object by the air cylinder to restore the elastically deformed vacuum pad, and the restored position of the vacuum pad. Since the vacuum pad is fixed and the air in the vacuum pad is discharged, the vacuum pad can perform vacuum adsorption without pressing the uppermost object to be adsorbed. For this reason, a gap is formed between the uppermost adsorbed material and the adsorbed material so that the air flows, and the adsorbed materials can be reliably adsorbed one by one. Therefore, it is possible to solve problems such as a decrease in operation rate due to reworking when two sheets are adsorbed, a defective product due to material drop, and the like, and contribute to improvement of equipment reliability.

[Brief description of drawings]

FIG. 1 is an operation explanatory diagram of an initial state in which a vacuum pad is pressed against an object to be adsorbed in an embodiment of the present invention.

FIG. 2 is an operation explanatory view of a state where air is supplied into the vacuum pad following FIG.

FIG. 3 is an operation explanatory view of a state where the inside of the vacuum pad is evacuated following the state of FIG. 2;

FIG. 4 is a conceptual diagram of a carrying device incorporating a vacuum suction device of a conventional example.

[Explanation of symbols]

 1 Air Cylinder 2 Piston 5 Vacuum Pad 6 Compressed Air Source 7 Vacuum Pump 8 Adsorbate

Claims (2)

[Claims] 1. A first step of pressing an opening on the lower surface of a vacuum pad made of an elastic material against an object to be adsorbed, and supplying air into the vacuum pad to restore the elastically deformed vacuum pad and pressing force. Second to cancel
A vacuum adsorption method comprising: a step; and a third step of fixing the position of the restored vacuum pad and exhausting the air in the vacuum pad to adsorb an adsorbed substance. 2. An air cylinder having a piston that is capable of protruding and retracting downward and fixed, a vacuum pad that is attached to the tip of this piston and has a lower surface that is in contact with an object to be adsorbed as an opening, and is made of an elastic material, and this vacuum. In the state where the pad is pressed against the object to be adsorbed by the air cylinder, compressed air source that supplies air into the vacuum pad to restore the elastically deformed vacuum pad and release the pressing force, and the position where the vacuum pad is restored A vacuum suction device, comprising: a vacuum pump that discharges air in the vacuum pad and sucks an adsorbed object while the piston is fixed.