JP2007015849A - Plate glass transfer device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plate glass transfer device capable of keeping an air layer on a template in a uniform condition by exhausting air through an air layer relieving part in a lower part of the template smoothly. <P>SOLUTION: This plate glass transfer device is composed of a fan housing provided with a discharge fan 21a in its inside, an air chamber 22 arranged in an upper part of the fan housing and opening its upper face, a base plate 23 attached by adhering closely to an opened upper part of the air chamber 22 and forming a plurality of through holes, and a template part arranged on an upper face of the base plate 23. The template part is provided with a filter holder 52 arranged on each through hole of the base plate 23 and forming a through hole communicating with the through holes of the base plate 23 at the center, a filter 54 arranged in the through hole of the filter holder 52, and the plurality of templates 56 covering an upper face of the filter holder 52, forming an air discharge hole 56a corresponding to the through hole of the filter holder 52, and arranged separated from each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a plate glass transfer device, and more particularly, to a plate glass transfer device that can uniformly maintain an air layer on a single plate by smoothly discharging air through an air layer relaxation portion below the single plate.

  In general, in the inspection equipment for inspecting the existence of defects in thin plate glass used for LCDs, PDPs, etc., as a moving device for moving the plate glass to the inspection section side, the bottom surface of the plate glass is placed on the rotating shaft. A moving device is used in which a plurality of free rollers for supporting and moving are axially mounted, and such a rotating shaft is provided as a whole along the length direction.

  However, the plate glass transfer device using such a free roller basically moves the plate glass after the plate glass and the outer peripheral surface of the free roller come into contact with each other. The rocking phenomenon cannot be completely eliminated, and such a rocking makes it impossible to accurately measure the defect rate during the inspection of the plate glass, resulting in a problem that the inspection accuracy is lowered.

  In order to solve such a problem, the transfer unit 20 of the sheet glass transfer apparatus previously filed by the present applicant has a plurality of through holes at the upper end of the air chamber 22 as shown in FIGS. A base plate 23 having a base 23 a is provided, and a filter 24 is disposed on the base plate 23. The filter 24 is covered again, and a plurality of pieces having air discharge holes 25 a corresponding to the through holes 23 a of the base plate 23. The plates 25 are arranged so as to be separated from each other by a predetermined interval.

  In the conventional technology configured as described above, the air discharged through the air discharge holes 25a of the piece plate 25 forms an air layer on the piece plate 25, and the plate glass 40 is floated on the air. The remaining air excluding the air forming the air layer by the discharge is discharged to the outside of the transfer unit 20 through the passage 26 between the pieces 25.

  However, since the plate glass transfer device according to the conventional technology discharges air to the outside only through the narrow passage 26 between the individual plates 25, the air discharge amount is limited, and smooth air discharge is performed. As a result, the air layer formed on the piece plate 25 as a whole or partially increases in the amount of air, and the phenomenon of the swell of the plate glass 40 occurs, which is also inspecting the plate glass. In other words, there is a problem that the defect rate cannot be measured accurately and the inspection accuracy is lowered.

  The present invention has been made in view of the above problems, and by smoothly discharging air through the air layer relaxation portion at the lower part of the single plate, the air layer on the single plate is kept uniform, and the plate glass swells up. By preventing the phenomenon, it is possible to accurately measure the defect rate at the time of inspection of the plate glass, and an object of the present invention is to provide a plate glass transfer device that can improve the inspection accuracy.

  In order to achieve the above object, the sheet glass transfer device according to the present invention is provided with a transfer unit 20 on the upper surface of the workbench 10, and the plate glass 40 transferred onto the transfer unit 20 on one side of the transfer unit 20. The transfer unit includes a fan 30 having a discharge fan therein, an air chamber disposed at an upper portion of the fan housing and having an open upper surface, and an open upper portion of the air chamber. A glass plate comprising a base plate having a plurality of through holes penetrating in the vertical direction on the surface and a single plate portion disposed on the upper surface of the base plate In the transfer device, the piece plate portion is disposed and attached on each through hole of the base plate, and a filter holder in which a through hole communicating with the through hole of the base plate is formed in the center; A filter disposed in the through-hole of the data holder, and a plurality of pieces disposed on the filter holder so as to cover the upper surface of the filter holder and to form an air discharge hole corresponding to the through-hole of the filter holder and disposed apart from each other Characterized by being composed.

  Moreover, in the plate glass transfer apparatus according to the present invention, it is preferable that an erection step for locating the filter is formed on the inner peripheral surface of the through hole of the filter holder.

  Further, in the sheet glass transfer device according to the present invention, each piece plate is alternately arranged in a zigzag manner with respect to the traveling direction of the other piece plates arranged in the lateral direction and the plate glass. It is preferable.

  Further, in the sheet glass transfer device according to the present invention, of the pieces, the pieces arranged at the front and rear end portions where the plate glass enters and exits and the end portions facing each other at a predetermined distance in the center of the work table. It is preferable that the air discharge holes on the plate are formed densely.

  Further, in the plate glass transfer device according to the present invention, the outer peripheral surface of each filter holder disposed on the bottom surface of each of the densely formed air discharge holes is provided with a facing portion for forming a straight passage between each other. It is preferable.

  According to such a plate glass transfer device according to the present invention, the air layer on the one plate can be kept uniform and the swelling phenomenon can be prevented by smoothly discharging the air through the air layer relaxation portion below the one plate. In this way, it becomes possible to accurately measure the defect rate during the inspection of the plate glass, thereby having the effect of improving the inspection accuracy.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 3 to FIG. 5, the plate glass transfer device according to the present invention is disposed over the work table 10 provided with the inspection unit 11 in the center of the upper surface and the front and rear parts of the work table 10, and symmetrical to each other. And a transfer machine 30 provided on the work table 10 adjacent to one side of the transfer unit 20.

  The work table 10 has a trapezoidal square table shape, and is provided with a light source 11a and a camera equipment 11b over the entire horizontal direction above the work table 10 at a predetermined height. Part 11 is provided.

  The transfer unit 20 is separated from the central part of the work table 10 by a predetermined distance, and is disposed over the entire front and rear parts of the work table 10 in order to pass the plate glass 40 below the inspection unit 11. It consists of rectangular plates that are symmetrical to each other.

  The transfer machine 30 is provided on the work table 10 adjacent to one side surface of the transfer unit 20 so as to be slidable along the length direction, and one side surface of the plate glass 40 transferred onto the transfer unit 20. And is guided so as to pass under the inspection unit 11 in a state where it floats above a predetermined height of the transfer unit 20.

  Here, since the work table 10, the inspection unit 11, and the transfer machine 30 apply known techniques as they are, the details thereof will be omitted, and the transfer unit 20 of the present invention will be described in detail below. It becomes as follows.

  The transfer unit 20 includes a fan housing 21 including a discharge fan 21a, an air chamber 22 placed on the upper surface of the fan housing 21, a base plate 23 covering the upper portion of the air chamber 22, and the base plate. 23 and a plurality of single-plate portions 50 respectively attached to corresponding portions on the upper surface of 23.

  The fan housing 21 is formed in a square box shape with a clean filter 21d covered on the open upper surface and a discharge fan 21a for discharging air upward.

  Further, on the side surface and bottom surface of the fan housing 21, there are provided a through hole 21b for smoothly discharging air through an open upper clean filter 21d, a power cable 21c for supplying power to the discharge fan 21a, and the like. A through hole 21b is formed so as to pass through.

  Further, the clean filter 21d of the fan housing 21 does not allow the air discharged from the discharge fan 21a to flow directly into the air chamber 22, and air cleaning that sifts out impurities such as fine dust contained in the air temporarily. It has a function for relaxing the discharge pressure of air together with the function.

  The air chamber 22 is formed with a space at the center for filling the air discharged by the discharge fan 21a and discharging the air through all the through holes 23a of the base plate 23. It is a square box shape that is open as a whole, and a through hole 22a that communicates with the open upper portion of the fan housing 21 is formed in the center of the bottom surface that is placed on the upper surface of the fan housing 21. A space 22b is provided, and the base plate 23 is attached in close contact with the entire opened upper surface.

  That is, after the air discharged by the discharge fan 21a is primarily filled in the air chamber 22, the air continuously flows into the air chamber 22 through the discharge fan 21a. The internal air is pushed upward and discharged into the through hole 23 a of the base plate 23.

  The base plate 23 is a rectangular plate that is attached in close contact with the open upper portion of the air chamber 22. A plurality of through holes 23 a penetrating upward and downward are formed on the surface of the base plate 23. ing.

  A single plate portion 50 for forming a uniform air layer is disposed on the upper surface of the base plate 23.

  The single plate portion 50 includes a filter holder 52 disposed and attached on each through hole 23 a of the base plate 23, a filter 54 disposed in the through hole 52 a of the filter holder 52, and the filter holder 52. And a plurality of single plates 56 covering the upper surface.

  The filter holder 52 is disposed corresponding to all the through holes 23a of the base plate 23, and is tightened on the base plate 23 by a fastening tool such as a screw. A through hole 52a having the same diameter as that of the through hole 23a and communicating with the through hole 23a is formed. On the inner peripheral surface of the through hole 52a, an erection stage 52b for locating the filter 54 is provided. Yes.

  Here, the through hole 52a of the filter holder 52 has a large diameter portion formed at the same diameter and height as the filter 54 so that the filter 54 is placed on the upper portion, and immediately below the large diameter portion. It has a two-stage through-hole shape consisting of connected small diameter portions.

  That is, the boundary portion between the large diameter portion and the small diameter portion serves as a resting stage 52b for resting the filter 54.

  On the other hand, among the filter holders 52, the outer peripheral surfaces of the filter holders 52 disposed on the bottom surface of the single plate 57 having the air discharge holes 57a formed densely do not contact each other, Facing portions 52c for forming straight passages spaced apart from each other are provided.

  The filter 54 is detachably disposed in the through hole 52a of the filter holder 52, and has a disk shape with a surface having the same plane as the upper surface of the filter holder 52. The filter 54 is a base plate. The air in the air chamber 22 is not immediately discharged to the through hole 23a of the base plate 23 on each through hole 23a of the base plate 23, so that the discharge pressure is relieved to some extent, and is discharged to the extent that the air leaks through the filter 54. It is preferable to use a sintered filter mainly.

  The piece plate 56 is placed on the upper surface of the filter holder 52 and is fastened and fixed to the filter holder 52 with a tightening tool such as a screw. An air discharge hole 56a corresponding to the through hole 52a of the filter holder 52 is formed. , Each of which is arranged with a predetermined distance between each other.

  Here, it is preferable that the air discharge hole 56a is formed smaller than the diameter of the filter 54 so that the filter 54 does not come outside through the air discharge hole 56a.

  And each said piece board 56 is alternately arrange | positioned by the zigzag at the front-and-rear end part with respect to the advancing direction of each other piece board 56 and the plate glass 40 arrange | positioned in the horizontal direction. That is, the air discharge holes 56a adjacent in the horizontal direction are not arranged side by side but are arranged in a zigzag manner.

  Further, of the single plates 56, the front and rear end portions of the transfer portion 20 into which the plate glass 40 enters and is discharged are disposed at the end portions of the transfer portion 20 facing each other at a predetermined distance in the center of the work table 10. The air discharge holes 56 a on the piece plate 56 are formed densely with each other in order to increase the air discharge amount toward the plate glass 40.

  In the plate glass transfer device according to the present invention having such a configuration, air is discharged upward by the rotation of the discharge fan 21a, is temporarily filled in the air chamber 22, and the air chamber is continuously discharged by the discharge fan 21a. The air in 22 is pushed upward and discharged upward through a through hole 23 a of a base plate 23 attached to the upper surface of the air chamber 22. At this time, the air discharged upward through the through hole 23 a of the base plate 23 has its discharge speed reduced by the filter 54 of the filter holder 52, and is discharged to the air discharge hole 56 a of the single plate 56 so as to leak through the filter 54. Finally, a kind of air layer is formed on the piece plate 56.

  That is, the air layer formed between the plate glass 40 and the piece plate 56 is continuously replenished (flowed) with air, and the air layer is continuously maintained.

  That is, the air layer formed on the piece plate 56 supports the plate glass 40 placed on the piece plate 56, and continues to the upper part of the piece plate 56 and the lower part of the piece plate 56. While repeating the process in which air is discharged to the outside of the transfer section 20 through the air layer relaxation section 58 provided between the filter holders 52, the plate glass 40 is separated by a predetermined height on the single plates 56 and 57. Lift up in state.

  The air layer relaxation portion 58 lowers the volume of the entire air layer on the piece plate 56 downward, relaxes the air layer to some extent, and smoothes the flow of air in the air layer discharged to the outside of the transfer portion 20. By doing so, the swelling phenomenon that the center part of the plate glass 40 swells is prevented.

  This is because, for example, when the air layer is formed by a flat flat plate without the air layer relaxing portion 58, the air on the frame side passes through the outside more quickly than the air at the center of the flat plate. A swelling phenomenon occurs in which the central portion swells upward. At this time, as in the present invention, an air layer relaxation portion 58 is provided, and air in the air layer is smoothly discharged outside through the air layer relaxation portion 58. As a result, the volume of the air layer is partially relaxed, and the phenomenon of the plate glass 40 being swollen can be prevented.

  When the plate glass 40 to be inspected is transferred to the transfer unit 20 on the work table 10 in the state in which the air layer is formed on the piece plate 25 in this way, from this time, the plate glass 40 is separated from the predetermined layer by the air layer. The plate 30 is inspected for defects while the transfer machine 30 of the work table 10 vacuum-adsorbs one side of the plate glass 40 and slides it to the inspection unit 11 side. At the same time, the plate glass 40 that has passed through the inspection unit 11 continues to move and is guided to the next stage.

  As described above, the plate glass 40 is moved in a state of air levitation without being in contact with the transfer unit 20 during the defect inspection. Therefore, the plate glass 40 is accurately inspected without any fluctuation such as contact friction. Is called.

  Furthermore, the plate glass transfer device of the present invention can be used for other physical distribution and other applications besides plate glass inspection equipment.

  As described above, the present invention has been described in detail with reference to the above-described embodiments. However, the present invention is not limited to this, and the scope of the present invention does not depart from the basic technical idea of the present invention. Many other modifications will be possible for those having ordinary knowledge in the art. Needless to say, the present invention should be construed in accordance with the appended claims.

It is a schematic perspective view which shows the plate glass transfer apparatus by a prior art. It is a principal part schematic sectional drawing of FIG. It is a schematic perspective view which shows the plate glass transfer apparatus by this invention. It is a principal part disassembled perspective view of FIG. It is a principal part schematic sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Working table 11 Inspection part 11a Light source 11b Camera equipment 20 Transfer part 21 Fan housing 21a Discharge fan 21b Through hole 21c Power supply cable 21d Clean filter 22 Air chamber 22a Through hole 23 Base plate 23a Through hole 24 Filter 25 Single plate 25a Air discharge hole 26 Passage 30 Transfer machine 40 Sheet glass 50 Single plate part 52 Filter holder 52a Through hole 52b Resting stage 52c Confronting part 54 Filter 56 Single plate 56a Air discharge hole 58 Air layer relaxation part

Claims (5)

A transfer unit 20 is provided on the upper surface of the work table 10, and includes a transfer machine 30 that transfers the plate glass 40 transferred onto the transfer unit 20 to one side of the transfer unit 20,
The transfer unit 20 includes a fan housing 21 having a discharge fan 21a therein, an air chamber 22 disposed on the top of the fan housing 21 and having an open upper surface, and an open upper portion of the air chamber 22. A base plate 23 having a plurality of through holes 23a penetrating in the vertical direction is formed on the surface thereof, and a single plate portion 50 disposed on the upper surface of the base plate 23. In a plate glass transfer device comprising:
The one-plate portion 50 is
A filter holder 52 which is disposed and attached on each through hole 23a of the base plate 23 and has a through hole 52a communicating with the through hole 23a of the base plate 23 at the center;
A filter 54 disposed in the through hole 52a of the filter holder 52;
A plate glass characterized in that the upper surface of the filter holder 52 is covered, and a plurality of pieces 56 are arranged apart from each other in which air holes 56a corresponding to the through holes 52a of the filter holder 52 are formed. Transfer device.   The plate glass transfer device according to claim 1, wherein the inner peripheral surface of the through hole 52 a of the filter holder 52 is formed with an erection step 52 b for urging the filter 54.   Each said piece board 56 is arrange | positioned by the zigzag alternately by the front-and-rear end part with respect to the advancing direction of each other piece board 56 and plate glass 40 arrange | positioned in the horizontal direction. The plate glass transfer apparatus according to 1.   Each air discharge hole on the piece plate 56 arranged at the end portion of the piece plate 56 facing the front and rear end portions where the plate glass 40 enters and exits and a predetermined distance in the center of the work table 10. 56. The plate glass transfer device according to claim 1, wherein 56a is formed densely.   The outer peripheral surface of each filter holder 52 disposed on the bottom surface of each of the densely formed air discharge holes 56a is provided with a facing portion 52c for forming a linear passage between them. The plate glass transfer apparatus according to claim 4.

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