JP2015174761A - Holding jig of plate glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a holding jig which enables a small number of clamp means to hold a plate glass in a proper condition, and can be lightweight and low-cost.SOLUTION: A holding jig 1 comprises a frame body 3 surrounding the periphery of a plate glass 2, and clamp means 4a, 4b attached to the frame body 3 and disposed from the frame body 3 toward the plate glass 2. The clamp means 4a, 4b comprise clampers 41 for clamping only all corner parts of the plate glass 2 respectively. Thus, by clamping only all corner parts of the plate glass 2, the occurrence of bending and warping between the corner parts of the plate glass 2 can be prevented, and thereby it is possible to hold the plate glass 2 efficiently in a proper condition. Also, as compared to those holding the plate glass 2 at the sides, since a number of clamp means can be reduced, it is possible to facilitate the work upon clamping the plate glass 2, and the holding jig 1 can be lightweight and low-cost.

Description

  The present invention relates to a holding jig capable of optimizing the holding of a plate glass in order to cause the plate glass to perform appropriate processing and good conveyance.

  As is well known, for flat panel displays (FPD) such as liquid crystal displays, plasma displays, field emission displays (including surface emission displays) and electroluminescence displays, sensor substrates, or semiconductor packages such as solid-state imaging devices and laser diodes. The actual situation is that plate glass used for a cover, a substrate of a thin film compound solar cell, and the like is being increased in size and thickness.

  The plate glass is subjected to various processes such as film formation and cleaning in the manufacturing process. However, the plate glass that has been increased in size and reduced in thickness is likely to swell on the surface of the plate glass due to bending or warping. For this reason, if a film forming process or a cleaning process is performed in a state where the surface of the plate glass remains wavy, a film formation defect on the surface of the plate glass or uneven cleaning occurs, leading to a reduction in the quality of the plate glass.

  As a holding jig for coping with such a problem, for example, there is a substrate fixing means provided in the inspection apparatus disclosed in FIG. The substrate fixing means is provided with clamping means capable of clamping in a state where all four sides of the plate glass are pulled in the vertical direction and the horizontal direction on a fixed frame that fixes the plate glass in a vertical position at a fixed position.

JP 2005-172882 A

  However, when holding an enlarged and thin plate glass, the four sides which are the end portions of the plate glass are easily damaged. Therefore, in the substrate fixing means disclosed in the above-mentioned Patent Document 1, in order to prevent the plate glass from being damaged when the sides of the plate glass are held, the undue tensile stress is partially concentrated and acts. Two clamping means are provided opposite to each side. However, when a process such as cleaning is performed on the plate glass, the clamped region is not processed. Therefore, if there are many places to be clamped, inconvenience occurs when the process is performed. In addition, when the number of clamping means is large, the work for clamping the plate glass becomes troublesome and complicated, and the weight of the substrate fixing means is increased and the structure becomes complicated, so that the manufacturing cost is inevitably increased.

  The problem to be solved by the present invention is to provide a holding jig that can hold a plate glass in an appropriate state with a small number of clamping means, and can achieve weight reduction and cost reduction.

  The present invention made to solve the above problems is a holding jig for holding a plate glass, and is attached to the frame body surrounding the plate glass, and is arranged from the frame body toward the plate glass. The clamping means is characterized by having a clamper that clamps only all corners of the glass sheet.

  In this manner, the frame body is provided with clamping means, and only the corners of the plate glass are clamped. Therefore, by clamping only all corner portions of the plate glass, the plate glass can be held on the inner peripheral side of the frame body while suppressing the plate glass surface from being wavy due to bending or warping. Further, since the clamping means only needs to clamp all the corners of the plate glass, the clamping area can be reduced, the number of clamping means can be reduced, and the plate glass can be efficiently held. .

  The clamp means preferably includes biasing means for biasing the opposing corner portions of the plate glass in directions away from each other.

  If it does in this way, the corner part which each plate glass will mutually oppose is hold | maintained at the frame body in the state pulled apart, and the bending and curvature of the periphery where the tensile force is acting are prevented. Furthermore, since the corner portions adjacent to each other in the four corner portions are also pulled, it is possible to prevent the bending and warping from occurring by applying a tensile force to the four sides of the plate glass. As a result, it is possible to more effectively suppress the occurrence of waviness on the surface of the entire plate glass.

  It is preferable that the clamper is provided so as to be rotatable around an imaginary straight line extending from the attachment portion of the clamp means to the frame to the clamp portion to the plate glass.

  In this way, the clamper rotates around an imaginary straight line from the attachment portion of the clamp means to the frame to the clamp portion of the plate glass, so that the plate glass that is clamped even when and after clamping the plate glass It is possible to avoid an unreasonable bending stress locally acting on the corner portion of the.

  It is also preferable that the clamp means is slidably attached along the frame.

  In this way, if there is a change in the size of the glass sheet to be held, it is only necessary to adjust the position by sliding the clamp means along the frame, so various types of frames can be used without changing the size of the frame. It is possible to reliably hold a plate glass of the size.

  It is preferable that an elastic member that is in contact with the front side and the back side of the plate glass is attached to the inside of the clamper.

  In this way, when the corner portion of the plate glass is clamped by the clamping means, the impact acting on the plate glass from the clamper is alleviated by the elastic member, and the impact generated at the clamp portion during transportation is also elastic after clamping. Relieved by the member. Therefore, it is possible to appropriately prevent the corner portion of the plate glass from being broken or damaged.

  It is preferable that the glass sheet is disposed between the virtual surface in contact with the front surface side end portion of the frame body and the virtual surface in contact with the back surface side end portion of the frame body.

  In this way, when the frame holding the plate glass is being transported, the plate glass does not protrude from the frame even if the frame passes through a position close to the equipment in the factory. Can be avoided from colliding with the equipment in the factory, and breakage of the glass sheet can be prevented.

  The thickness of the plate glass is preferably 300 μm or less, more preferably 200 μm or less, and particularly preferably 50 μm or less.

  If it does in this way, when only all the corner parts of sheet glass are held, it can control still more effectively that bending and curvature arise in sheet glass.

  According to the plate glass holding jig of the present invention, it is possible to avoid bending and warping between the corner portions of the plate glass by clamping only all the corner portions of the plate glass. It becomes possible to hold. Furthermore, since the number of clamping means can be reduced compared with the one that holds the plate glass by the side, the work for clamping the plate glass can be facilitated, and the cost and weight of the holding jig can be reduced. It becomes possible to plan.

It is a holding jig of the present invention, and is a front view showing a state where a plate glass is held by a holding jig. It is the sectional view on the AA line of FIG. It is the elements on larger scale of FIG. 1, Comprising: It is a figure which shows the outline of the clamp means attached to the frame. It is the elements on larger scale of FIG. 2, Comprising: It is the schematic which shows the aspect which clamps plate glass. It is the elements on larger scale of FIG. 1, Comprising: It is a figure which shows the state which the clamp means clamped the corner part of plate glass. It is a front view which shows the modification of the holding jig of this invention. It is the BB sectional view taken on the line of FIG. It is the elements on larger scale of FIG. 7, Comprising: It is a figure which shows the outline of a clamp means.

  Embodiments of a glass sheet holding jig (hereinafter simply referred to as a holding jig) according to the present invention will be described below with reference to the drawings. In the present embodiment, the height direction of the glass sheet is defined as the vertical direction, and the width direction of the glass sheet is defined as the horizontal direction.

  The holding jig 1 in FIG. 1 is a jig for holding the plate glass 2 in a vertical state when the formed plate glass 2 is cleaned. The holding jig 1 includes a frame 3 that surrounds the periphery of the plate glass 2, and clamp means 4 a and 4 b that are attached to the frame 3 and clamp only all corner portions of the plate glass 2.

  As shown in FIG. 1, the frame 3 accommodates and holds a plate glass 2 having a thickness of 100 μm on its inner peripheral side, and an upper frame 3a and a lower frame 3b positioned on the upper side and the lower side, respectively. It is supported by a pair of side frames 3c.

  As shown in FIG.1 and FIG.2, the upper clamp means 4a which clamps the upper corner part of the plate glass 2 is attached to the both ends of the left-right direction of the upper frame 3a, respectively. Further, lower clamp means 4b for clamping the lower corner portion of the glass sheet 2 are also attached to both left and right ends of the lower frame 3b. The clamp means 4 a and 4 b are provided from the attachment portion 5 to the frame body 3 toward the inner peripheral side of the frame body 3. Note that the upper clamp means clamp means 4a and the lower clamp means 4b have the same structure except for the directionality.

  FIG. 3 shows the upper clamping means 4a taken as an example for explaining the structure of the clamping means 4a, 4b. The upper clamp means 4a includes a clamper 41 that clamps a corner portion of the plate glass 2, and a virtual straight line L that extends from the attachment portion 5 of the upper clamp means 4a to the frame 3 to the clamp portion 41a of the plate glass 2. The rotating member 42 is configured to rotate, and biasing means 43 that biases opposing corner portions of the glass sheet 2 clamped by the clamper 41 in directions away from each other.

  The front end portion of the clamper 41 is provided so as to be openable and closable, and a clamp portion 41 a that clamps the front and back surfaces of the plate glass 2 is provided. In addition, a spring 44 is provided at the rear end of the clamper 41 to hold the plate glass 2 by applying a clamping force to the clamp portion 41 a that is in contact with the front and back surfaces of the plate glass 2, for example. The urging means 43 is constituted by a helical spring or the like. In the present embodiment, the urging means 43 has a bellows-like stretchable cover member that covers it.

  The upper clamp means 4 a is provided so as to be slidable along the frame body 3, and is attached to the frame body 3 via the slide member as the mounting portion 5 described above. In the present embodiment, slide members are attached to the upper frame 3a and the lower frame 3b, respectively.

  Further, the attachment portion 5 is provided with an unshown axis (hereinafter referred to as the X axis) orthogonal to the paper surface in FIG. 1, and the clamp means 4a and 4b are respectively rotatable around the X axis. Yes. Therefore, the clamper 41 can swing around the X axis. Note that the X-axis for swinging the clamper 41 may be provided at a position closer to the mounting portion 5 than the clamper 41 of the clamp means 4a, 4b. Further, the attachment portion 5 is provided with an unshown axis (hereinafter referred to as a Y axis) orthogonal to the paper surface in FIG. 2, and the clamp means 4a and 4b are rotatable around the Y axis. Yes. Therefore, the clamper 41 can also swing around the Y axis. Note that the Y axis for swinging the clamper 41 may also be provided at a position closer to the mounting portion 5 than the clamper 41 of the clamp means 4a, 4b.

  In addition, an elastic member 6 that is in contact with the front surface side and the back surface side of the glass sheet 2 is attached to the inside of the tip of the clamper 41 provided in the upper clamp means 4a and the lower clamp means 4b.

  Next, an example of the operation | work which hold | maintains the plate glass 2 in the holding jig 1 of this invention is demonstrated based on FIG. 4, FIG.

  In this embodiment, the case where it hold | maintains from the upper corner part of the plate glass 2 is demonstrated. First, in accordance with the size of the plate glass 2 held on the inner peripheral side of the frame body 3, the slide member is slid along the frame body 3 to adjust the positions of the upper clamp means 4a and the lower clamp means 4b. After adjusting the position of each of the clamp means 4a and 4b, either the left or right corner on the upper side of the plate glass 2 is clamped by the upper clamp means 4a attached to the upper frame 3a. At this time, as shown in FIG. 4A, the rotating member 42 provided on the upper clamp means 4a is connected to a virtual straight line extending from the attachment portion 5 of the upper clamp means 4a to the frame 3 to the clamp portion 41a of the plate glass 2. Rotate around L and adjust the direction of the clamper 41 so that the clamper 41 opens and closes in the same direction as the plate thickness direction of the glass sheet 2.

  Thereafter, the clamper 41 is opened to clamp one upper corner portion of the plate glass 2. At this time, as shown in the direction of the arrow in FIG. 4 (b), the pair of clampers 41 are slid away from each other to open the clamp portion 41a. After opening the clamp part 41a, the plate glass 2 is moved to the clamp part 41a. Then, the pair of slid clampers 41 are slid in the opposite direction to the slid direction, the clamp portions 41a (elastic members 6) of the clamper 41 are brought into contact with the front side and the back side of the plate glass 2, and the plate glass 2 is moved. Clamp. At this time, since the spring 44 is provided at the rear end portion of the clamper 41, the pair of slide clampers 41 are closed by the restoring force of the spring 44, and the plate thickness of the plate glass 2 is fixed to the clamp portion 41a. A clamping force acting in the direction is applied. Thereby, one corner part of the surface side of the plate glass 2 and a back surface side is clamped by the upper clamp means 4a, and one corner part of the upper side of the plate glass 2 is hold | maintained at the upper frame 3a (refer FIG. 5).

  Thereafter, the other corner portion on the upper side of the plate glass 2 is clamped by another upper clamp means 4a. Thereby, the upper side of the glass sheet 2 (hereinafter referred to as the upper side) is held by the upper frame 3a. At this time, one corner portion on the upper side of the plate glass 2 is already held on the upper frame 3a by one upper clamp means 4a. Therefore, the other corner part can be clamped in a state where the upper side of the plate glass 2 is pulled in advance.

  Further, thereafter, the two corners on the lower side of the plate glass 2 are also clamped by the lower clamp means 4b in the same procedure as described above. At this time, the plate glass 2 is held in a state where the upper side is suspended from the upper frame 3a by the upper clamp means 4a. That is, the plate glass 2 is in a state of being pulled downward by its own weight. Therefore, by clamping one corner portion on the lower side of the glass sheet 2 by the lower clamp means 4b, the side hanging toward the one corner section on the lower side of the glass sheet 2 can be held in a pulled state. it can. After holding one corner portion on the lower side of the plate glass 2, the other corner portion on the lower side of the plate glass 2 is clamped by the lower clamp means 4 b while being pulled in the width direction of the plate glass 2. A lower side (hereinafter referred to as a lower side) can also be held by the lower frame 3b.

  The upper clamp means 4a and the lower clamp means 4b are attached with urging means 43 for urging the opposing corner portions of the glass sheet 2 in directions away from each other. Thereby, all the corner parts of the plate glass 2 are pulled in a direction away from each other. Therefore, the plate glass 2 is pulled in a direction opposite to the diagonal line, and each side is also pulled in the extending direction, so that the plate glass 2 is held in a stretched state over the entire region.

  Further, since the elastic members 6 are attached to the clampers 41 of the clamp means 4a and 4b, the plate glass 2 and the clamper 41 are used for impacts when the plate glass 2 is clamped by the clamper 41 or during conveyance after clamping. The impact acting during this period is alleviated by the elastic member 6, and the corner portion of the glass sheet 2 can be prevented from being broken or damaged.

  Moreover, it is preferable that the plate | board thickness of the plate glass 2 hold | maintained at the frame 3 is 300 micrometers or less, and also it is preferable that it is 200 micrometers or less. In particular, it is preferably 50 μm or less. By setting the plate thickness of the plate glass 2 to be held by the frame body 3 in such a range, it is possible to further enhance the suppression effect against a situation in which the plate glass 2 is bent or warped.

  From the above, according to the holding jig 1 of the present invention, since all the corner portions of the plate glass 2 are clamped, a plurality of clamping means are not provided for each of the four sides of the plate glass 2. Also, the plate glass 2 can be held in a state of being pulled in the vertical direction and the horizontal direction. Therefore, since the plate glass 2 can be reliably held with a small number of clamping means, the efficiency of the clamping work can be improved, and the weight and cost of the holding jig 1 for holding the plate glass 2 can be reduced. . Furthermore, since the plate glass 2 can be held in a vertical position, the treatment liquid applied to the plate glass 2 during the treatment such as cleaning flows down on the surface of the plate glass 2, thereby It is possible to prevent a liquid pool from being generated on the surface of 2. Moreover, since the area | region where the clamp means 4a and 4b hold | maintain the plate glass 2 can also be reduced, since the area | region where surface treatment is given can be taken widely, the quality of plate glass is not impaired remarkably.

  In addition, the clamping means 4a and 4b for clamping the corner portions of the plate glass 2 are provided with the urging means 43 for urging the opposite corner portions of the plate glass 2 away from each other. It can be held in a stretched state without causing warpage or the like. Thereby, since the surface of the plate glass 2 can be held without undulation, a plurality of plate glasses 2 are arranged in parallel with a slight gap between them, and the surface of each plate glass 2 is washed or the like. It is possible to avoid a situation where the glass plates 2 are in contact with each other during the processing. Thereby, since it can prevent that the surface of the plate glass 2 gets damaged, the fall of the quality of the plate glass 2 can be prevented.

  Furthermore, since the clamper 41 is rotatably provided around the virtual straight line L from the attachment portion 5 of the clamp means 4a, 4b to the frame body 3 to the clamp portion 41a of the plate glass 2, the plate glass 2 is attached to the frame body 3. When the clamper 41 is clamped on the inner peripheral side, it can be avoided that the clamper 41 rotates around the imaginary straight line L and an unreasonable bending stress acts on the corner portion of the plate glass 2. As a result, it is possible to prevent the corner portion of the plate glass 2 from being damaged.

  Moreover, since the clamp means 4a and 4b are each attached to the slide member which can be slid along the frame 3, even if the magnitude | size of the plate glass 2 is changed, it is necessary to change the structure of frame 3 itself. This is extremely advantageous in holding the glass sheets 2 of various sizes. Further, since it is only necessary to adjust the positions of the clamp means 4a and 4b, the plate glass 2 after the size has been changed can be quickly held on the frame body 3.

  Further, since the elastic member 6 that contacts the front surface side and the back surface side of the plate glass 2 is attached to the clamper 41, after the impact or clamping when the corner portion of the plate glass 2 is clamped by the clamping means 4a and 4b The impact acting between the plate glass 2 and the clamper 41 during the transport of the sheet is mitigated by the elastic member 6. As a result, since an excessive impact does not act on the corner portion of the plate glass 2, the corner portion can be prevented from being damaged.

  Moreover, since the plate glass 2 is arrange | positioned between the virtual surface which contact | connects the surface side edge part of the frame 3, and the virtual surface which contact | connects a back surface side edge part, when batch-cleaning the plate glass 2, for example, plate glass 2 Even if it is immersed in a washing tank in a state where a plurality of the frame bodies 3 in which the glass is held are arranged in parallel, the plate glasses 2 do not come into contact with each other. Thereby, the arrangement | sequence pitch of the frame 3 at the time of washing | cleaning can be made small, and many plate glass 2 can be wash | cleaned at once (illustration omitted).

  Further, the present embodiment is not limited to the above. In the above embodiment, the upper clamp means 4a and the lower clamp means 4b are attached to the upper frame 3a and the lower frame 3b, respectively, but in addition, a pair of supports for the upper frame 3a and the lower frame 3b. You may attach to the side part frame 3c (illustration omitted).

  Moreover, as shown in FIGS. 6 and 7, the upper clamp means 4 a and the lower clamp means 4 b may be provided at the corner portion of the frame 3.

  In the present embodiment, the pair of clampers 41 provided on the clamp means 4a and 4b are slid in a parallel state to be opened and closed. In addition to this, as shown in FIG. The clamper 41 may be configured to be openable and closable with respect to each other in the thickness direction of the glass sheet 2 by an opening / closing drive unit 45 provided at the rear end.

DESCRIPTION OF SYMBOLS 1 Holding jig 2 Plate glass 3 Frame 3a Upper frame 3b Lower frame 4a Upper clamp means 4b Lower clamp means 41 Clamper 42 Rotating member 43 Energizing means 5 Mounting part 6 Elastic member L Virtual straight line

Claims (7)

A holding jig for holding a plate glass,
A frame body that surrounds the periphery of the plate glass; and a clamp unit that is attached to the frame body and disposed from the frame body toward the plate glass;
The plate glass holding jig, wherein the clamp means includes clampers for clamping only all corner portions of the plate glass.   2. The plate glass holding jig according to claim 1, wherein the clamp means includes biasing means for biasing the corner portions of the plate glass facing each other in directions away from each other.   The holding | maintenance of the plate glass of Claim 1 or 2 with which the said clamper is rotatably provided around the virtual straight line from the attachment part to the frame of the said clamp means to the clamp part to plate glass. jig.   The plate glass holding jig according to any one of claims 1 to 3, wherein the clamp means is slidably attached along the frame body.   The plate glass holding jig according to any one of claims 1 to 4, wherein an elastic member that is in contact with a front surface side and a back surface side of the plate glass is attached inside the clamper.   The said glass sheet is arrange | positioned between the virtual surface which is an inner peripheral side of the said frame, and contact | connects the virtual surface which contact | connects the surface side edge part of the said frame body, and a back surface side edge part. The plate glass holding jig according to any one of 1 to 5. The thickness of the said plate glass is 300 micrometers or less, The holding jig of the plate glass of any one of Claims 1-6 characterized by the above-mentioned.

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