Conveying device using electrostatic adsorbing plate
Provided is a low-cost electrostatic attraction transfer apparatus which can perform high-speed transfer, stabilizes a contact status of an electrostatic attraction board with a film and the like and does not generate fine defects on an object to be transferred.
1. A conveying device comprising an electrostatic adsorbing plate, said electrostatic adsorbing plate having an electrode portion in the interior thereof, and a voltage applying portion for applying voltage to said electrode portion, wherein an article to be conveyed is adsorbed and conveyed by utilizing an electrostatic force induced by applying voltage to said electrode portion from said voltage applying portion, wherein
a peeling plate having a multitude of apertures is disposed on the article to be conveyed side with respect to said electrostatic adsorbing plate, said peeling plate being mounted in such a manner that one surface thereof can repeat a contact state and a non-contact state between it and a surface of said electrostatic adsorbing plate, and the surface of said electrostatic adsorbing plate is inclined relative to a surface of the article to be conveyed.
2. A conveying device according to claim 1 , wherein said peeling plate is formed of an insulating material.
3. A conveying device according to claim 1 , wherein the percentage of voids of said peeling plate is 50% or more.
4. A conveying device according to claim 1 , wherein the angle of inclination between the surface of the electrostatic adsorbing plate and that of the article to be conveyed is in the range of 1 to 45 degrees.
5. A conveying method comprising, when conveying each of a multitude of stacked filmy articles to be conveyed, disposing the conveying device described in claim 1 over said articles to be conveyed in a contacted state of the electrostatic adsorbing plate with the peeling plate and inclinedly relative to a surface of each of said articles to be conveyed, adsorbing the article positioned at the top electrostatically, conveying it to a predetermined position, bringing the electrostatic adsorbing plate and the peeling plate into a non-contact state, separating the thus conveyed article from the conveying device, and repeating a series of these operations.
6. A conveying device according to claim 2 , wherein the percentage of voids of said peeling plate is 50% or more.
7. A conveying device according to claim 6 , wherein the angle of inclination between the surface of the electrostatic adsorbing plate and that of the article to be conveyed is in the range of 1 to 45 degrees.
8. A conveying device according to claim 3 , wherein the angle of inclination between the surface of the electrostatic adsorbing plate and that of the article to be conveyed is in the range of 1 to 45 degrees.
9. A conveying device according to claim 2 , wherein the angle of inclination between the surface of the electrostatic adsorbing plate and that of the article to be conveyed is in the range of 1 to 45 degrees.
10. A conveying method comprising, when conveying each of a multitude of stacked filmy articles to be conveyed, disposing the conveying device described in claim 9 over said articles to be conveyed in a contacted state of the electrostatic adsorbing plate with the peeling plate and inclinedly relative to a surface of each of said articles to be conveyed, adsorbing the article positioned at the top electrostatically, conveying it to a predetermined position, bringing the electrostatic adsorbing plate and the peeling plate into a non-contact state, separating the thus conveyed article from the conveying device, and repeating a series of these operations.
11. A conveying method comprising, when conveying each of a multitude of stacked filmy articles to be conveyed, disposing the conveying device described in claim 8 over said articles to be conveyed in a contacted state of the electrostatic adsorbing plate with the peeling plate and inclinedly relative to a surface of each of said articles to be conveyed, adsorbing the article positioned at the top electrostatically, conveying it to a predetermined position, bringing the electrostatic adsorbing plate and the peeling plate into a non-contact state, separating the thus conveyed article from the conveying device, and repeating a series of these operations.
12. A conveying method comprising, when conveying each of a multitude of stacked filmy articles to be conveyed, disposing the conveying device described in claim 7 over said articles to be conveyed in a contacted state of the electrostatic adsorbing plate with the peeling plate and inclinedly relative to a surface of each of said articles to be conveyed, adsorbing the article positioned at the top electrostatically, conveying it to a predetermined position, bringing the electrostatic adsorbing plate and the peeling plate into a non-contact state, separating the thus conveyed article from the conveying device, and repeating a series of these operations.
13. A conveying method comprising, when conveying each of a multitude of stacked filmy articles to be conveyed, disposing the conveying device described in claim 6 over said articles to be conveyed in a contacted state of the electrostatic adsorbing plate with the peeling plate and inclinedly relative to a surface of each of said articles to be conveyed, adsorbing the article positioned at the top electrostatically, conveying it to a predetermined position, bringing the electrostatic adsorbing plate and the peeling plate into a non-contact state, separating the thus conveyed article from the conveying device, and repeating a series of these operations.
14. A conveying method comprising, when conveying each of a multitude of stacked filmy articles to be conveyed, disposing the conveying device described in claim 4 over said articles to be conveyed in a contacted state of the electrostatic adsorbing plate with the peeling plate and inclinedly relative to a surface of each of said articles to be conveyed, adsorbing the article positioned at the top electrostatically, conveying it to a predetermined position, bringing the electrostatic adsorbing plate and the peeling plate into a non-contact state, separating the thus conveyed article from the conveying device, and repeating a series of these operations.
15. A conveying method comprising, when conveying each of a multitude of stacked filmy articles to be conveyed, disposing the conveying device described in claim 3 over said articles to be conveyed in a contacted state of the electrostatic adsorbing plate with the peeling plate and inclinedly relative to a surface of each of said articles to be conveyed, adsorbing the article positioned at the top electrostatically, conveying it to a predetermined position, bringing the electrostatic adsorbing plate and the peeling plate into a non-contact state, separating the thus conveyed article from the conveying device, and repeating a series of these operations.
16. A conveying method comprising, when conveying each of a multitude of stacked filmy articles to be conveyed, disposing the conveying device described in claim 2 over said articles to be conveyed in a contacted state of the electrostatic adsorbing plate with the peeling plate and inclinedly relative to a surface of each of said articles to be conveyed, adsorbing the article positioned at the top electrostatically, conveying it to a predetermined position, bringing the electrostatic adsorbing plate and the peeling plate into a, non-contact state, separating the thus conveyed article from the conveying device, and repeating a series of these operations.