TW201402435A - Glass substrate packing system, protection sheet transfer device, protection sheet supply device and glass substrate packing method - Google Patents

Abstract

A glass substrate packing system 1 is provided, in which several glass substrates 4 and protection sheets 7 are mutually laminated and packed on a pallet 5 by means of a glass substrate transfer device 6 and a protection sheet transfer device 8. In addition, a costruction is formed in such a way that at the time when glass substrates 4 and protection sheets 7 are mutually laminated, the protection sheet transfer device 8 carries, on the glass substrate 4 that is carried beforehand by the glass substrate transfer device 6, the protection sheet 7 in a state that only the periphery portion of the protection sheet 7 is kept. Furthermore, on the protection sheet 7 only whose periphery portion is kept, the keeping of the protection sheet 7 is released by means of the glass substrate transfer device 6 at a stage where sequential glass substrates 4 are carried.

Description

Glass substrate bag system, protective sheet loading device, protective sheet supply device, and glass substrate packaging method

The present invention relates to an improvement in the technique of wrapping a glass substrate in which a glass substrate and a protective sheet are alternately laminated on a pallet and packaged.

As is well known, various glass substrates typified by a glass substrate for a flat panel display (hereinafter referred to as FPD) such as a liquid crystal display, a plasma display, an electroluminescence display, or a field emission display, are stored or transported. Usually, it is stacked on a pallet and placed in a standing posture (substantially vertical posture) or a horizontal posture (substantially level posture) in a state in which a protective sheet such as a pad is placed between the glass substrates (for example, please refer to the patent) Document 1).

In the prior art, the bagging operation of the glass substrate is carried out by manually laminating the glass substrate and the protective sheet on the pallet by manual operation by the operator, but the actual situation is that In the case, the work efficiency is poor, Further, with the increase in the size of various glass substrates in recent years, the work itself is becoming difficult or substantially impossible.

Therefore, for example, a method for automating the glass substrate wrapping operation disclosed in Patent Documents 2 and 3 has been developed. Specifically, Patent Document 2 discloses a method in which a glass substrate is preliminarily held in a horizontal posture at a standby position of a glass substrate adjacent to a support table, and is lifted by a glass substrate transfer device. The glass substrate is stacked on the pallet of the support table in a horizontal posture, and the paper pulled out from the winding device is cut into a predetermined length, and is folded into two by a folding device, and then sent to the guide. The paper pad standby position (protective sheet standby position) formed on the level portion of the plate is standby, and the operation of stacking the pad paper on the pallet of the support table by using the pad transfer device is repeated, thereby The glass substrate is carried on a pallet.

Patent Document 3 discloses a method in which a gas circulation area forming device forms a gas flow allowing a gas to flow between a front side and a back side of a part of a foamed resin sheet. After the foamed resin sheet is placed on the upper surface of the glass, a negative pressure is applied to the gas flow region of the foamed resin sheet by a vacuum device, whereby the foamed resin sheet and the glass sheet are laminated. Adsorbed and transported, and stored in a standard position on the pallet.

In the case of the packaging work of the glass substrate, the protective sheet which is placed on standby at the standby position of the protective sheet is usually held by the suction pad and placed on the upper surface of the glass substrate.

At this time, the protective sheet can be used from the standby position of the protective sheet by using an adsorption pad or the like. Since they are taken out in order, it is necessary to supply the protective sheet to the standby position of the protective sheet during the work of carrying out the glass substrate.

As a method of supplying the protective sheet, for example, there is a method disclosed in Patent Document 3, in which a plurality of protective sheets are stacked in a horizontal posture in advance at a protective sheet standby position to form a laminate, but in this method, The laminated protective sheets are bonded to each other by static electricity or the like, so that the operation of taking out the protective sheet from the protective sheet standby position can only cause a troublesome and complicated operation.

Therefore, as disclosed in Patent Document 2, by transporting the protective sheets one by one and feeding them to the protective sheet standby position, it is possible to prevent the protective sheets from sticking to each other when the protective sheets are laminated in a manner as described above. Pick up the question.

In addition, although it is not a method of a bag of a glass substrate, in the following Patent Document 4, such a method is disclosed, and the use is reversed. One of the stroke postures is one of the stroke operations, and the adsorption heads respectively attached to the tip end portions of the cylinders are sucked and held by the binding portion of the booklet, that is, the portion close to the staples, by The cylinder is contracted to expand the interval between the pair of suction pads, and the booklet that is held by suction is held in a stretched state.

Patent Document 1: Japanese Patent Laid-Open Publication No. SHO 62-180836

Patent Document 2: Japanese Patent Laid-Open Publication No. 2006-8192

Patent Document 3: Japanese Patent Laid-Open Publication No. 2005-75482

Patent Document 4: Japanese Patent Laid-Open Publication No. 2002-234634

The protective sheet placed on the upper surface of the glass substrate may slide on the upper surface of the glass substrate due to static electricity or the like between the glass substrate. In addition, when a resin sheet, a foamed resin sheet, or the like is used as the protective sheet, it is easily wrinkled due to its stretchability.

However, in the method disclosed in Patent Document 2, after the protective sheet is placed on the glass substrate loaded on the pallet in advance, the protective sheet is formed only after the subsequent glass substrate is placed on the protective sheet. The state placed on the previous glass substrate. That is, the protective sheet placed on the previous glass substrate does not form any retention effect on the previous glass substrate before the subsequent glass substrate is placed. Further, in the method disclosed in Patent Document 3, the protective sheet placed on the previous glass substrate does not form any retention on the previous glass substrate before the subsequent glass substrate is placed.

Therefore, before the subsequent glass substrate is placed on the holding sheet, the protective sheet placed on the previous glass substrate may be displaced or may be wrinkled. Further, when the glass substrate and the protective sheet are alternately laminated on the pallet in a state in which the protective sheet is displaced as in the former case, the glass substrates may be in direct contact with each other to break the glass substrate. On the other hand, if the glass substrate and the protective sheet are alternately laminated on the pallet in a state in which the protective sheet is wrinkled as in the latter case, the thickness of the protective sheet merely increases the amount of wrinkles of the protective sheet, so In the state in which the glass substrate and the protective sheet are alternately laminated, the stacking direction size thereof It will increase unduly, and the number of stacked sheets of the glass substrate on the pallet is reduced. In addition, in this case, since the wrinkles of the protective film cause a gap between the glass substrate and the protective sheet, or the glass substrate is deflected, there is a possibility that undue stress acts on the glass substrate, so that The glass substrate is broken.

Further, there are many cases in which the glass substrate is required to be in a bag form in a standing position on a pallet, and in this case, automation of the bagging operation is actually required. However, in Patent Documents 2 and 3, there is no disclosure of any method of laminating and stacking a glass substrate and a protective sheet on a pallet in a standing posture. Further, if the method disclosed in Patent Documents 2 and 3 is employed in the form of the bag, the protective sheet placed on the glass substrate which is first loaded on the pallet is liable to cause positional deviation or wrinkles due to its own weight. The breakage of the glass substrate or the increase in the size of the lamination direction is a more significant problem.

In view of the above, a first object of the present invention is to automate the operation of stacking and laminating a glass substrate and a protective sheet on a pallet, and to suppress positional deviation or wrinkles on the protective sheet as much as possible. The problem is to properly implement the baggage operation.

Further, in many cases, a protective sheet is used, for example, a relatively thin protective sheet having a thickness of about 0.5 mm, and is easily wrinkled at the stage of being held by an adsorption pad or the like. In particular, as the size of the glass substrate has increased in recent years, the size of the protective sheet has also increased, so that the generation of wrinkles has become more remarkable.

However, in the methods disclosed in Patent Documents 2 and 3, in the state in which the protective sheet is only partially adsorbed and held by the adsorption pad, the protective sheet is loaded. Since it is placed on the glass substrate, the protective sheet in a state in which wrinkles are generated may be placed on the glass substrate as it is. In the state in which the protective sheet is wrinkled, the glass substrate and the protective sheet are alternately laminated on the pallet, and similarly, the number of laminated sheets of the glass substrate described above or the glass substrate may be damaged. problem.

On the other hand, the method disclosed in Patent Document 4 is directed to a booklet such as a manual, and is not intended to be an article having a large size as a protective sheet used in a bag of a glass substrate. Further, even if the method is applied to a bag of a glass substrate, the protective sheet is partially adsorbed and held (two points) by a pair of suction pads, so that the protective sheet is partially lifted by the adsorption pad. In the state of the whole, the whole hangs down. Further, if the cylinder is contracted in this state and the interval between the pair of suction pads is widened, tension may be locally applied to the protective sheet, and wrinkles may be generated on the protective sheet. Therefore, in this case as well, the above-described problem of the reduction in the number of laminated glass substrates or the breakage of the glass substrate can be caused.

In view of the above, a second object of the present invention is to prevent wrinkles from occurring on a protective sheet placed on a glass substrate when the glass substrate and the protective sheet are alternately stacked on a pallet and wrapped.

Further, such a problem of wrinkles generated on the protective sheet is not problematic if the protective sheet placed on the glass substrate is not wrinkled, but it is extremely difficult to remove the wrinkles generated on the protective sheet afterwards. Therefore, it is preferable to prevent the occurrence of wrinkles on the protective sheet in the standby position of the protective sheet as the starting point of the supply of the protective sheet placed on the glass substrate.

However, in the method disclosed in Patent Document 2, the protective sheet at the standby position of the protective sheet is simply placed on the guide sheet in a horizontal posture, and practically does not have any effect from the viewpoint of suppressing generation of wrinkles.

In view of this point, a third object of the present invention is to suppress the occurrence of wrinkles on the protective sheet at the standby position of the protective sheet as much as possible.

In addition, the above-mentioned first to third problems have in common that the problem of suppressing the occurrence of wrinkles in the protective sheet is one element, and the purpose is to optimize the packaging operation of the glass substrate.

A first device of the present invention to solve the above-described first problem is a glass substrate package system including a glass substrate supply device for supplying a glass substrate, and a protective sheet supply device for supplying a glass substrate a large protective sheet; a glass substrate loading device that mounts the glass substrate supplied from the glass substrate supply device on a pallet; and a protective sheet loading device that mounts the protective sheet supplied from the protective sheet supply device Further, the glass substrate and the protective sheet are alternately laminated and wrapped on the pallet by the glass substrate loading device and the protective sheet loading device, and the following configuration is adopted. When the glass substrate and the protective sheet are alternately stacked, the protective sheet loading device is placed on the glass substrate placed by the glass substrate loading device, and the protective sheet is placed in a state in which only the peripheral portion thereof is held. On the protective sheet holding only the peripheral portion, the subsequent glass substrate is placed by the glass substrate loading device At the stage of the board, the maintenance of the protective sheet is released.

According to this configuration, the protective sheet placed on the protective sheet loading device is placed on the glass substrate placed first by the glass substrate loading device, and the glass substrate mounting device is used to mount the subsequent glass substrate. Since the protective sheet loading device holds the peripheral portion of the protective sheet, it is possible to prevent the position of the protective sheet from being displaced or wrinkled before the subsequent glass substrate is placed. Further, in the stage of releasing the holding of the protective sheet formed by the protective sheet loading device, since the protective sheet is already held between the front glass substrate and the subsequent glass substrate, it is possible to prevent the sheet from being attached to the protective sheet afterwards. A problem of positional deviation or wrinkles.

Further, since the protective sheet loading device holds only the peripheral portion of the protective sheet larger than the glass substrate, the glass substrate can be directly placed on the glass substrate in a state where the protective sheet is held by the protective sheet loading device. On the area other than the holding portion of the holding piece formed by the sheet loading device. Therefore, since the glass substrate loading device and the protective sheet loading device do not interfere with each other, it is possible to appropriately automate the packaging operation of the glass substrate.

In the above configuration, the protective sheet is preferably a resin sheet or a foamed resin sheet.

In this way, compared with the case where paper or the like is used as the protective sheet, it is possible to more reliably prevent the foreign matter such as dust from adhering to the glass substrate from the protective sheet, and it is possible to satisfactorily maintain the cleanliness of the glass substrate. In addition, when a foamed resin sheet is used as the protective sheet, good cushioning properties can be obtained compared with paper or the like, and the impact acting on each of the glass sheets can be appropriately alleviated during transportation or the like. another On the other hand, although the resin sheet and the foamed resin sheet are often stretchable in many cases and have a property of easily generating wrinkles, even in the case of having such a property, the protective sheet can be loaded before the subsequent glass substrate is placed. Since the device holds the protective sheet (resin sheet or foamed resin sheet), the generation of wrinkles can be appropriately suppressed.

In the above configuration, a configuration may be adopted in which the glass substrate and the protective sheet are alternately stacked in a standing position on the pallet. In addition, the posture of the glass substrate and the protective sheet (referred to as a glass substrate) means that the inclination angle of the glass substrate or the like to the horizontal plane is 45 degrees or more and 90 degrees or less. The "horizontal posture" of the concept corresponding to the "standing position" means a posture in which the inclination angle to the horizontal plane such as a glass substrate is equal to or greater than 0 degrees and less than 45 degrees (the same applies hereinafter).

In other words, the protective sheet is in a state in which the peripheral portion is held by the protective sheet loading device before the subsequent glass substrate is placed. Therefore, even when it is required to carry the glass substrate on the pallet in a standing posture, It is also possible to appropriately prevent the problem that the protective sheet is displaced or wrinkled due to its own weight, and it is possible to realize an appropriate glass substrate.

In the above configuration, the protective sheet loading device preferably has a configuration in which the protective sheet is held while tension is applied to the protective sheet.

In this way, the problem of wrinkles on the protective sheet can be more reliably prevented. Therefore, as described above, it is particularly advantageous to use a resin sheet or a foamed resin sheet as the protective sheet.

In the above configuration, the protective sheet supply device has a raw material supply device Preferably, the raw material supply device is configured to supply a raw material of the long protective sheet, and the raw material cutting device is configured to cut the raw material supplied from the raw material supply device to form a protective sheet.

In this way, the raw material of the long protective sheet can be sequentially cut to prepare a protective sheet, and the prepared protective sheet can be supplied to the protective sheet loading device one by one. Therefore, in the case where the protective sheets are taken out one by one from the plurality of protective sheets stacked in advance by the protective sheet loading device, there is no fear that the protective sheets are closely adhered to each other, and the efficiency of the wrapping operation can be further improved. Chemical.

In this case, it is preferable that the protective sheet supply device has a tension applying device that applies tension to the protective sheet produced by the raw material cutting device.

In this way, at the stage of supplying the protective sheet to the protective sheet loading device, the problem of wrinkles in the protective sheet can be surely prevented. In particular, as described above, it is advantageous to use a resin sheet or a foamed resin sheet as the protective sheet. Further, in this case, since the protective sheet has a state of tension, even if the configuration of the protective sheet is maintained by, for example, adsorption by a negative pressure action, or the adsorption by the negative pressure is used in combination, In the case where the protective sheet is held, the protective sheet loading device can secure the adhesion between the adsorption portion of the protective sheet loading device and the protective sheet, and reliably adsorb the protective sheet.

In the above configuration, the material supply device includes a pair of raw material rolls and a pair of cutters, wherein a pair of raw material rolls are wound by a raw material, and a pair of cutters cut each of the raw material rolls, and the following is used. The composition is better, In other words, the raw material cutting device that is pulled out from one of the pair of raw material rolls is supplied to the raw material cutting device, and the remaining amount of the raw material roll becomes smaller than a predetermined amount, and the raw material roll is used. The drawn raw material is cut by a cutter corresponding to a raw material roll among the pair of cutters, and the end portion of the cut raw material is separated from the raw material drawn from the other raw material roll. The top ends are connected.

In this way, even when the residual amount of the raw material wound on the raw material roll is small, the raw material cutting device can continue to supply the raw material by using the raw material wound on the other raw material roll. Therefore, according to this configuration, it is possible to shorten the supply of the raw material cutting device to the raw material cutting device as much as possible, compared with the case where the raw material wound on the raw material roll is used up and then replaced with another new material roll. time.

In the above-described configuration, the material supply device has a configuration in which the tip end portion of the material pulled by the other material roll is connected to the end portion of the material in a state where tension is applied to the material to be cut. good.

In this way, it is possible to prevent the problem of wrinkles in the raw material, and as a result, it is possible to appropriately prevent wrinkles from occurring on the protective sheet produced by cutting the raw material. Therefore, as described above, it is particularly advantageous to use a resin sheet or a foamed resin sheet as the protective sheet.

In the above-described configuration, it is preferable that the glass substrate supply device has a plurality of transport mechanisms, and each of the transport mechanisms is in a state of being spaced apart from the direction in which the glass substrate is conveyed, and Glass substrate The glass substrate loading device has a comb-shaped glass substrate holding device for adsorbing and holding the glass substrate, and the comb-shaped glass substrate holding device is inserted between the respective transport mechanisms. In the space formed, the lower surface of the glass substrate on the transport mechanism is adsorbed and held.

In general, a glass substrate or the like for FPD has a high degree of cleanliness in its effective surface because of the formation of various elements or films on one surface (effective surface) of the front and back surfaces thereof, and must not be damaged. Therefore, in the case of transporting the glass substrate, it is necessary to place the glass substrate on the transport mechanism such as the transport roll or the transport belt with the effective surface side facing upward. Further, even when the glass substrate conveyed to the predetermined position is placed on the pallet as described above, it is necessary to make the effective surface of the glass substrate highly clean or not damaged. Therefore, by adopting the above configuration, it is possible to reliably cope with the request. That is, by inserting a comb-shaped glass substrate holding device in a space formed by gaps between the respective transport mechanisms, the glass can be easily and surely adsorbed without holding the effective surface (upper surface) of the glass substrate. The inactive surface of the substrate (below).

The first method of the present invention invented to solve the above first problem is a glass substrate packaging method including a lamination process using a glass substrate mounting device for placing a glass substrate on a pallet, and a protective sheet loading device that is larger than the glass substrate is placed on the protective sheet loading device on the pallet, and the glass substrate and the protective sheet are alternately stacked on the pallet; wherein the laminating process is repeated by The operation is performed, that is, the upper surface of the glass substrate placed by the glass substrate loading device is loaded by the protective sheet After the protective sheet is placed in a state in which only the peripheral portion is held, the glass substrate loading device is placed on the protective sheet of the peripheral portion by the glass substrate loading device, and the protective sheet is released. maintain.

By using this method, the effects described in the paragraphs [0025] and [0026] described above can be similarly enjoyed.

In the above method, the protective sheet is preferably a resin sheet or a foamed resin sheet.

In this way, the effects described in the paragraph [0028] described above can be similarly enjoyed.

In addition, the above-described squeezing device and the slinging method of the present invention are advantageous in the case where the glass substrate to be the object of the squeegee is a large-sized glass substrate, and specifically, for example, the size of one side is 700 mm or more (especially, the size of one side is equal to or greater than or equal to The case where the glass substrate of 1000 mm) is carried out is advantageous. Further, it is preferable that the size of the protective sheet is set to be as follows, that is, in a state where the glass substrate is placed on the protective sheet, the holding portion formed as the protective sheet loading device is exposed to the outside of the glass substrate, for example, 20 to 90 mm ( It is preferably about 70 mm).

The second device of the present invention, which is invented to solve the above-described second problem, is a protective sheet loading device which is formed by a protective sheet holding device when a glass substrate and a protective sheet are alternately laminated on a pallet and are wrapped. Holding and placing on the glass substrate; wherein the protective sheet holding device has a pair of holding portions that are relatively freely movable or separated, wherein the holding portion is the two sides facing the protective sheet, along the edge Holding a plurality of regions on each side or a continuous linear region along each side thereof, and holding the protective sheet by the pair of holding portions In the state of the two sides facing each other, the pair of holding portions are separated, and the tension is applied to the protective sheet in a direction away from the pair of holding portions.

If such a configuration is utilized, a pair of holding portions that are moved or contacted by relative freedom can be used to position the facing sides of the protective sheet in a plurality of intermittent regions along or along each side thereof. The state in which the continuous linear regions of the respective sides are held, the pair of holding portions are separated, and the protective sheet is applied with the tension in the direction away from the pair of holding portions, so that the protective sheet is not partially but protected. The entire sheet is evenly applied with tension. Therefore, the entire protective sheet can be uniformly stretched, and as a result, the occurrence of wrinkles can be suppressed.

In the above configuration, the protective sheet holding device preferably has an auxiliary holding portion that replaces the remaining two sides of the four sides of the protective sheet except the two sides that are held by the pair of holding portions At least one side is maintained in an auxiliary manner.

In this way, during the process of holding the protective sheet and placing it on the glass substrate, the problem of sloshing of the protective sheet can be suppressed at the time of transfer of the protective sheet. Therefore, the shape of the protective sheet is kept more stable, and it is also advantageous in terms of speeding up the conveyance of the protective sheet.

In the above-described configuration, the auxiliary holding portion is preferably configured such that the protective sheet is formed by the separation of the pair of holding portions in a state in which the protective sheet is additionally held as described above. The extending portion moves the auxiliary holding portion along a direction away from the pair of holding portions. In addition, in the "stretching of the protective sheet" as referred to herein, it is corrected that the deflection or wrinkles of the protective sheet are corrected. When the size is increased along the deviation direction of the pair of holding portions, and the deformation due to the property of the material of the protective sheet, the size is increased as the dimension of the pair of holding portions increases. Stretching.

In this manner, in a state where tension is applied to the protective sheet by the pair of holding portions, the holding portion of the auxiliary holding portion can be uniformly extended in the holding position, so that the sloshing of the protective sheet can be suppressed, and more reliably Apply a uniform tension to the protective sheet.

In the above configuration, the auxiliary holding portion is preferably configured to move in a direction away from the pair of holding portions in synchronization with the deviation of the pair of holding portions.

In this way, in the process of applying tension to the protective sheet by the pair of holding portions, the position held by the auxiliary holding portion is also extended simultaneously with the other portions, so that uniform tension can be applied to the protective sheet more reliably.

In the above configuration, the protective sheet has a good stretchability.

In this way, the protective sheet can be properly stretched during the application of the tension, so that displacements such as positional deviations are not easily generated between the protective sheet holding device (holding portion and/or the auxiliary holding portion). It is possible to apply the proper tension to the protective sheet.

Here, as the stretchable protective sheet, for example, the above-mentioned resin sheet or foamed resin sheet can be used.

In the above configuration, the protective sheet holding device may be configured to hold the protective sheet in a standing posture.

That is, although there are many cases in which the glass substrate and the protective sheet are alternately stacked and palletized on the pallet in a standing posture, the tension is applied to the protective sheet by the above-described configuration. Properly respond to this bag form.

The third device of the present invention, which is invented to solve the above-described third problem, is a protective sheet supply device which is a protective sheet interposed between glass substrates when a plurality of glass substrates are stacked and packaged on a pallet. And transported in a predetermined conveyance direction, and sequentially supplied to a predetermined protective sheet standby position, characterized by having a tension applying device that holds the protective sheet at the standby position of the protective sheet In the state, tension is applied to the protective sheet. Further, as the tension applying means, for example, a means for applying tension to the held protective sheet in the conveyance direction thereof, or a means for applying tension to the held protective sheet in a direction orthogonal to the conveyance direction thereof, or holding The protective sheet is applied to the tension direction in both the conveyance direction and the direction orthogonal to the direction.

According to this configuration, since the tension applied to the protective sheet at the standby position of the protective sheet is applied by the tension applying means, the protective sheet at the position can be stretched, and the occurrence of wrinkles of the protective sheet can be suppressed.

In the above configuration, the tension applying device includes a pair of holding portions that extend the two sides of the protective sheet facing the conveyance direction in a plurality of holding regions along the respective sides thereof or along the sides thereof The linear holding area is held and moved in a relatively free contact or separation along the conveyance direction, and the pair of holding portions are separated from each other while the protective sheet is held by the pair of holding portions. It is preferable to apply tension to the protective sheet in the above-described conveying direction.

In this way, by relatively freely contacting or separating the moving pair of holding portions, the two sides facing the protective sheet, the intermittent plurality of regions along each side thereof or along the respective sides thereof In a state where the continuous linear region is held, the pair of holding portions are separated from each other along the conveyance direction of the protective sheet, and tension is applied to the protective sheet along the conveyance direction, so that the protective sheet can be not partially but Tension is equally applied to the entire protective sheet surface. Therefore, the entire protective sheet can be uniformly stretched, and finally, the generation of wrinkles can be surely suppressed.

In the above configuration, the pair of holding portions have a configuration in which, when the two sides of the protective sheet facing the conveyance direction are held in the plurality of holding regions along the respective sides thereof, At least the holding regions on the two corner sides of each side thereof may be in contact with or separated from each other in a direction orthogonal to the conveyance direction, and in the state in which the protective sheets are held by the pair of holding portions, the aforementioned The holding area formed by freely contacting or separating the movement faces away, and it is preferable to further apply tension to the protective sheet in a direction orthogonal to the conveying direction.

In this way, the protective sheet can also be applied with tension in a direction orthogonal to the conveyance direction, so that it is more preferable from the viewpoint of suppressing generation of wrinkles.

Further, in the above-described tension applying device, a pair of second holding portions may be separately provided, and the two sides facing the direction in which the protective sheet is orthogonal to the conveyance direction are held, and are orthogonal to the conveyance direction. In the state in which the protective sheet is held by the pair of second holding portions, the pair of second holding portions are separated from each other, and the protective sheet is transported along with the protective sheet. Apply tension in the direction of the direction of the intersection.

In the above-described configuration, it is preferable to provide a material cutting device that cuts the long sheet-shaped material conveyed in the conveyance direction into a predetermined size to produce the material. In the state in which the protective sheet produced by the material cutting device is held, the tension applying device is transported to the protective sheet standby position.

In this way, the protective sheet produced by the material cutting device is transported to the protective sheet standby position while being held by the tension applying device, so that the posture of the protective sheet at the protective sheet standby position can be maintained stable. status. Therefore, an appropriate tension can be applied to the protective sheet at the standby position of the protective sheet.

In the above configuration, the tension applying device may hold the protective sheet in a posture inclined to the horizontal plane at the protective sheet standby position.

In this case, it is advantageous in the case where it is required to laminate the glass substrate and the protective sheet on the pallet in a standing posture and to carry out the stacking. In other words, if the protective sheet is held in an inclined posture at the standby position of the protective sheet, it is advantageous to mount the protective sheet on the upper surface of the glass substrate loaded on the pallet without changing the posture of the protective sheet. From this point of view, the posture of the protective sheet held by the tension applying device and the posture of the protective sheet loaded on the pallet, that is, the posture of the glass substrate stacked on the pallet are substantially the same, good.

In the above configuration, the protective sheet has a good stretchability.

In this way, during the application of the tension, the protective sheet will be properly stretched, so that the positional deviation is not easily generated between the tension applying device and the tension applying device. Shift, therefore, it is possible to apply an appropriate tension to the protective sheet.

Here, as the stretchable protective sheet, for example, the above-mentioned resin sheet or foamed resin sheet can be used.

According to the first device and the first method of the present invention, the glass substrate and the protective sheet are alternately laminated on the pallet, and the bagging operation is carried out by the glass substrate loading device and the protective sheet loading device without labor. get on. Further, in the bagging operation, the protective sheet placed on the protective sheet loading device is placed on the glass substrate placed by the glass substrate loading device before the subsequent glass substrate is placed on the glass substrate loading device. In the state in which only the peripheral portion of the protective sheet is held by the protective sheet loading device, it is possible to prevent the problem of positional deviation or wrinkles on the protective sheet before the subsequent glass substrate is placed. Further, in the stage in which the holding of the protective sheet by the protective sheet loading device is released, since the protective sheet has been held between the preceding glass substrate and the subsequent glass substrate, the protective sheet can be prevented. The problem of positional deviation or wrinkles occurs afterwards. Therefore, according to the first device and the first method of the present invention, it is possible to automate the stacking operation of stacking and stacking the glass substrate and the protective sheet on the pallet, and suppress generation of the protective sheet as much as possible. The position is deviated or wrinkled, and the bagging operation is properly performed.

Further, according to the second device of the present invention, the two sides facing each other by the pair of holding portions are continuous in a plurality of regions along each side or along each side. In a state where the region is held, the pair of holding portions are separated from each other, and tension is applied to the protective sheet along the direction away from the pair of holding portions. The tension is uniformly applied to the entire protective sheet surface not locally on the protective sheet. Therefore, the entire protective sheet can be uniformly held in stretchability. Therefore, it is possible to mount a protective sheet having substantially no wrinkles on the glass substrate.

Further, according to the third device of the present invention, the tension applying means applies tension to the protective sheet at the standby position of the protective sheet, so that the protective sheet at the position can be stretched as much as possible. The generation of wrinkles of the protective sheet is suppressed.

1‧‧‧Glass substrate package system

2‧‧‧Glass substrate supply device

3‧‧‧Protection sheet supply device

4‧‧‧ glass substrate

5‧‧‧Tray

6‧‧‧Glass substrate loading device

7‧‧‧Protection film

8‧‧‧Proof sheet loading device

9‧‧‧ Arms

10‧‧‧Glass substrate holder

11‧‧‧ base

12‧‧‧ Slider

13‧‧‧Adsorption pad

14‧‧‧ Arms

15‧‧‧Protection sheet retaining device

16‧‧‧ Slider

17‧‧‧Top Department

18a, 18b‧‧‧ side

19a, 19b, 19c‧‧ ‧ fixture mechanism

20‧‧‧Transportation agencies

21‧‧‧Transportation volume

22‧‧‧Electric motor

23‧‧‧counter belt

24‧‧‧ Pulley

25‧‧‧Rotary axis

26, 27‧‧‧ bevel gears

28‧‧‧ raw materials

29‧‧‧ Raw material supply device

30‧‧‧Material cutting device

31a, 31b‧‧‧ raw material rolls

32a, 32b‧‧‧ cutters

33a, 33b‧ ‧ nip roll

34a, 34b‧‧‧ adsorption plate

35a, 35b‧‧ ‧ cylinder

36a, 36b‧‧‧ cut board

37a, 37b‧‧‧ buckle plate

38‧‧‧Two belts

39‧‧‧ Guided volume

40‧‧‧Tunnel roll

41‧‧‧Base

41a‧‧‧ sloped surface

42‧‧‧cutting mechanism

43‧‧‧ Press plate

44‧‧‧Cut cutter

45‧‧‧Tensor application device

46‧‧‧ Keeping Department

46a, 46b, 46c‧‧‧ adsorption plate

47‧‧‧ Keeping Department

47a, 47b, 47c, 47d‧‧‧ fixture mechanism

48‧‧‧Sliding rod (bar)

49‧‧‧ recess

50‧‧‧ lifting plate

B1, B2‧‧ fulcrum

X‧‧‧ attracting holes

Fig. 1 is a schematic perspective view showing the overall configuration of a purging device according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view showing a protective sheet holding device of the protective sheet loading device of Fig. 1.

Fig. 3 is a schematic plan view showing the glass substrate supply device of Fig. 1.

Fig. 4 is a schematic side view showing a material supply device of the protective sheet supply device of Fig. 1.

Fig. 5 is a schematic perspective view showing a material cutting device of the protective sheet supply device of Fig. 1.

Fig. 6 is a schematic side view showing a state at the final stage of the supply sheet supply process of the bag method according to the embodiment of the present invention.

Fig. 7(a) shows a layered method of the bag method according to the embodiment of the present invention. A schematic perspective view of the state of the initial stage of the process, FIG. 7(b) is a schematic perspective view showing the state of the intermediate stage, and FIG. 7(c) is a schematic perspective view showing the state of the final stage.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is a schematic perspective view showing the overall configuration of a glass substrate bag system according to an embodiment of the present invention. As shown in FIG. 1, the glass substrate package system 1 has the following configuration, including a glass substrate supply device 2, a protective sheet supply device 3, a glass substrate loading device 6, and a protective sheet loading device 8, wherein the glass substrate loading device 6 is a glass substrate 4 supplied from the glass substrate supply device 2 placed on a substantially L-shaped pallet 5, and the protective sheet loading device 8 mounts the protective sheet 7 supplied from the protective sheet supply device 3 on the pallet. In addition, the glass substrate 4 and the protective sheet loading device 8 are automatically laminated and stacked on the pallet 5 in a standing posture by the glass substrate loading device 6 and the protective sheet loading device 8, respectively. Further, in the present embodiment, the glass substrate 4 is a glass substrate for FPD, and has a size of 1000 to 2500 mm on one side and a thickness of 0.5 to 0.7 mm. Further, the protective sheet 7 is a foamed resin sheet (for example, a foamed polyethylene sheet) having a thickness of about 100 to 180 mm and a thickness of 0.5 to 0.6 mm from the glass substrate 4.

The glass substrate loading device 6 includes an arm portion 9 and a glass substrate holding device 10, wherein the glass substrate holding device 10 is attached to the tip end of the arm portion 9 in a rotatable and rocking manner. The arm portion 9 is rotatably mounted on the slider 12, wherein the slider The block 12 is slidably placed on the base 11. Further, the glass substrate holding device 10 has a comb-tooth shape, and a plurality of suction pads 13 are provided on each comb-tooth portion, and each of the adsorption pads 13 adsorbs the glass substrate 4 by a negative pressure action. Further, in the glass substrate holding device 10, a space is formed between adjacent comb-tooth portions.

The protective sheet loading device 8 includes an arm portion 14 and a protective sheet holding device 15, wherein the protective sheet holding device 15 is rotatably and rockably mounted on the top end of the arm portion 14 and holds only the peripheral portion of the protective sheet 7. The arm portion 14 is rotatably mounted on the slider 16, wherein the slider 16 is slidably placed on the base portion 11. The protective sheet holding device 15 includes an upper side portion 17 and side portions 18a, 18b as a pair of holding portions, wherein the side edge portions 18a, 18b extend downward from both ends of the upper side portion 17, and the protective sheet holding device 15 all open below Glyph.

As shown in FIG. 2, the pair of side edge portions 18a and 18b are in contact with substantially all of the two sides of the protective sheet 7 in the width direction. A plurality of suction holes X are formed in the direction of both sides in the width direction of the protective sheet 7 on the contact faces of the side portions 18a and 18b, and a negative pressure is applied to the protective sheets 7 from the respective suction holes X. On the both sides in the width direction of the protective sheet 7, the adsorption holding is performed on a plurality of regions (regions corresponding to the respective suction holes X) along the sides thereof.

Further, the one side portion 18a is fixed to the upper side portion 17, and the other side portion 18b is slidably attached to the upper side portion 17 along the longitudinal direction of the upper side portion 17, and the other side portion 18b is opposed to one. The side portions 18a are freely movable or separated. Further, by holding the pair of side portions 18a, 18b to hold both sides in the width direction of the protective sheet 7, the other side portion 18b is directed away from the one side portion 18a. The protective sheet 7 is slid (the width direction of the protective sheet 7) to apply tension to the protective sheet 7 in the width direction.

On the other hand, a plurality of (three in total, the center position of the upper side of the protective sheet 7 and the positions on both sides of the protective sheet 7) are attached to the upper side portion 17, and the clamp mechanisms 19a to 19c are protected as a pair. The upper holding portion of the sheet 7 is auxiliaryly held by the auxiliary holding portion. Further, as described above, since the other side portion 18b is configured to freely move or separately move the one side portion 18a, it is like following the protective sheet 7 which is produced when the side portion 18b is separated from each other. Similarly to the extension, the center clamp mechanism 19b and the clamp mechanism 19c on the other side portion 18b side are slidably attached to the upper side portion 17 along the longitudinal direction of the upper side portion 17. Specifically, in the present embodiment, when the other side portion 18b is slid to the one side portion 18a by, for example, x mm in order to make the extension of the protective sheet 7 uniform in the width direction, the sliding is set to be the same. At the same time, the jig mechanism 19c on the other side portion 18b side is slid by x mm in the same direction, and the center jig mechanism 19b is set to slide by x/2 mm. Further, in the present embodiment, since the extension of the protective sheet 7 is small on the side of the side portion 18a, the clamp mechanism 19a is fixed to the upper side portion 17.

As shown in FIG. 3, the glass substrate supply apparatus 2 has a plurality of conveyance mechanisms 20, and each conveyance mechanism 20 is in a state of being spaced apart in a direction orthogonal to the conveyance direction (the direction of the arrow A in the drawing) of the glass substrate 4. Next, they are arranged in parallel in parallel with the conveyance direction of the glass substrate 4. The interval between the adjacent transport mechanisms 20 is set to an interval at which the glass substrate holding device 10 (shown by a single-point chain line in the figure) which can be inserted into a comb shape is provided. In addition, the glass substrate 4 can be supplied by using a glass substrate. When it is set to 2, it carries out intermittently, and it stops at the time of the glass substrate standby position at the conveyance mechanism 20.

Each of the transport mechanisms 20 is provided with a plurality of transport rolls 21 on which the glass substrates 4 are actually placed, and each transport roll 21 rotates in synchronization. In detail, the rotational driving force from the motor 22 is transmitted to the plurality of pulleys 24 by the reverse belt 23, so that the rotating shafts 25 connected to the respective pulleys 24 can be synchronously rotated. Further, on each of the rotating shafts 25, a plurality of bevel gears 26 are fixed at intervals in the axial direction thereof, and the bevel gears 26 are engaged with the bevel gears 27 fixed on the carrying roll 21. . Thereby, the rotational driving force of the motor 22 is transmitted to the respective transport rolls 21, and the respective transport rolls 21 are synchronously rotated.

As shown in FIGS. 4 and 5, the protective sheet supply device 3 includes a raw material supply device 29 for supplying the raw material 28 of the long protective sheet 7, and a raw material cutting device 30 for cutting the raw material supply device 29. The protective sheet 7 is produced by the supplied raw material 28.

As shown in Fig. 4, the raw material supply device 29 includes a pair of raw material rolls 31a, 31b for winding the raw material 28, and a pair of cutters 32a, 32b for cutting from the respective raw material rolls 31a, 31b. In addition, the raw material 28 pulled out from one of the raw material rolls 31a and 31b is supplied to the raw material cutting device 30, and the remaining amount of the raw material roll 31a (31b) is smaller than a predetermined amount. The raw material 28 pulled out from the raw material roll 31a (31b) is cut by the cutter 32a (32b), and the end portion of the cut raw material 28 and the other raw material roll 31b (31a) are cut off. The tip end portion of the drawn raw material 28 is joined.

Specifically, the figure shows a state in which the raw material roll 31a of the pair of raw material rolls 31a and 31b is used, and the continuous raw material 28 on the raw material roll 31a in use is held by a pair of holding rolls 33a, Between 33b. In addition, the material 28 is pulled out from the raw material roll 31a in use, and is supplied to the material cutting device 30 (on the inclined surface 41a of the base 41 to be described later), with the rotation of the nip rolls 33a and 33b.

In the side of the raw material roll 31a in use, the suction plate 34a stands by in a state of being spaced apart from the back side of the surface on which the raw material 28 slightly pulled out from the standby material roll 31b faces. The suction plate 34a is rotatably attached to the distal end side of the cylinder 35a around the fulcrum A1. The base end side of the cylinder 35a is rotatably supported centering on the fulcrum A2. Further, between the suction plate 34a and the raw material roll 31a, a cutting plate 36a and a fastening plate 37a are provided, in which the cutting plate 36a is attached with a cutter 32a, and the fastening plate 37a is cut by the cutter 32a. When the raw material is 28, it is engaged with the cutting plate 36a.

In the distal end portion of the continuous material 28 on the raw material roll 31b in standby, the double-sided tape 38 is attached to the surface side of the raw material 28 pulled out from the raw material roll 31a in use, and the back side thereof is adsorbed. The plate 34b is adsorbed and held. The suction plate 34b is provided in a state of being gradually widened with respect to the movement of the raw material rolls 31a and 31b by the movement of the suction plate 34a, and is inclined with respect to the suction plate 34a, and the fulcrum B1 is The center is rotatably mounted on the tip end side of the cylinder 35b. The base end side of the cylinder 35b is rotatably supported centering on the fulcrum B2. Further, between the suction plate 34b and the raw material roll 31b, a cutting plate 36b and a fastening plate 37b are provided, wherein the cutting plate 36b is provided with a cutter 32b and a fastening plate 37b. When the raw material 28 is cut by the cutter 32a, it is engaged with the engaging plate 36b.

In addition, when a residual amount of one material roll 31a is detected to be smaller than a predetermined amount determined in advance by a sensor (not shown), the raw material 28 pulled out from the material roll 31a is adsorbed by the suction plate 34a. The cutting plate 36a and the engaging plate 37a are engaged and held, and the raw material 28 is cut by the cutter 32a. Then, the cylinder 35a is extended, and the suction plate 34a attached to the tip end thereof is overlapped with the suction plate 34b in standby, and the end portion of the material 28 after the cutting of the nip rolls 33a and 33b is continuously utilized. The double-sided tape 38 is connected to the distal end portion of the raw material 28 pulled out from the raw material roll 31b in standby. At this time, the adsorption plate 34a and the cylinder 35a are rotated about the fulcrums A1 and A2, and the adsorption plate 34a draws an arc-shaped trajectory (arrow symbol B in the figure) and overlaps the adsorption plate 34b.

Further, on the path from the raw material 28 pulled out from the raw material roll 31a to the nip rolls 33a, 33b, a guide roll 39 and a tension adjusting roll 40 are provided, and the raw material 28 is wound around a part of each of the rolls 39, 40. In the illustrated example, when the nip rolls 33a, 33b are not rotated, the tension adjusting roll 40 is moved downward, and when the nip rolls 33a, 33b are rotated, the tension adjusting roll 40 is moved upward. The raw material 28 is maintained at a constant tension and is supplied in a fixed size by the nip rolls 33a and 33b.

As shown in FIG. 5, the material cutting device 30 includes a base 41 having an inclined surface 41a, and a cutting mechanism 42 for cutting the pair of holding rolls 33a, 33b by the pair The raw material 28 pulled out onto the inclined surface 41a of the base 41 is cut. In addition, the inclined surface 41a of the base 41 is inclined to the horizontal plane. The oblique angle α is the same or substantially the same as the inclination angle of the glass substrate 4 placed in the standing position on the pallet 5 with respect to the horizontal plane.

The cutting mechanism 42 includes a pressing plate 43 and a cutter 44, wherein the pressing plate 43 presses the material 28 of a predetermined size pulled out by the holding rolls 33a, 33b against the inclined surface 41a of the base 41, from which the cutter 44 will The material 28 pressed against the inclined surface 41a by the pressing plate 43 is cut in a direction orthogonal to the conveyance direction (the direction of the arrow C in the drawing) (hereinafter referred to as a width direction). The pressing plate 43 is a plate-like body that is longer than the width direction of the material 28, and is movable in a direction approaching and facing away from the inclined surface 41a of the susceptor 41. Further, in the present embodiment, the space for moving the cutter 44 is formed at an intermediate position in the vertical direction of the pressing plate 43, and is formed in the width direction.

Further, the protective sheet supply device 3 has a tension applying device 45 that applies tension to the protective sheet 7 produced by the material cutting device 30. The tension applying device 45 has a pair of holding portions 46, 47 which are provided on both sides facing each other along the respective sides facing the conveying direction of the protective sheet 7 (the same direction as the conveying direction of the raw material 28). In the present embodiment, a configuration in which the holding portion 47 is freely moved or separated from the holding portion 46 is employed.

Specifically, the holding portion 46 located on the upstream side in the conveying direction has a plurality of (three in the illustrated example) suction plates 46a to 46c for sucking and holding the upper side of the protective sheet 7. A plurality of suction holes that act on the protective sheets 7 under a negative pressure are formed on the respective adsorption plates 46a to 46c. The suction plates 46a, 46c at both ends are configured to be relatively freely movable or separated in the width direction of the protective sheet 7.

The holding portion 47 located on the downstream side in the conveyance direction has a plurality of (four in the illustrated example) clamp mechanisms 47a to 47d sandwiching the lower side of the protective sheet 7 (the side cut by the cutter 44) The state is maintained. Each of the clamp mechanisms 47a to 47d is mounted on a slide bar 48 that moves up and down along the inclined surface 41a of the base 41, wherein the clamp mechanisms 47a, 47d at both ends are oppositely disposed along the width direction of the protective sheet 7. Freely touch or separate the composition of the movement. Further, when the respective clamp mechanisms 47a to 47d move up and down along the inclined surface 41a of the base 41 together with the slide bar 48, in order to prevent the movement of the respective clamp mechanisms 47a to d, the clamp mechanisms 47a to 47d are provided. In the region corresponding to the traveling path, a concave portion 49 is formed on the inclined surface 41a. Further, the elevating plate 50 is housed in the recess 49 corresponding to the jig mechanisms 47a and 47d at both ends.

Hereinafter, a packaging method of the glass substrate 4 achieved by the glass substrate package system 1 having the above configuration will be described.

The packaging method of the glass substrate package system 1 of the present embodiment is roughly divided into a glass substrate supply process, and the glass substrate 4 is supplied from the glass substrate supply device 2 to the glass substrate loading device 6; the protective sheet supply process is performed from the protective sheet. The supply device 3 supplies the protective sheet 7 to the protective sheet loading device 8; and a lamination process using the glass substrate loading device 6 and the protective sheet loading device 8 to interactively place the glass substrate 4 and the protective sheet 7 on the pallet 5 in a standing position, respectively Cascade.

As shown in FIGS. 1 and 3, in the glass substrate supply process, first, the glass substrate 4 is transported from the upstream side to the plurality of transport mechanisms 20 arranged in parallel. Then, the glass substrate 4 is transported at the same interval by the respective transport mechanisms 20, And stops when it reaches the standby position of the glass substrate. Then, at or after the previous stage, the glass substrate holding device 10 (indicated by a single-point chain line in FIG. 3) having a comb shape is inserted into the space between the adjacent transport mechanisms 20. In this state, the glass substrate holding device 10 is raised, and the suction pad 13 of the glass substrate holding device 10 is brought into contact with the lower surface of the glass substrate 4, and the lower surface of the glass substrate 4 is adsorbed and held. Then, the glass substrate holding device 10 is lifted upward from the conveyance surface of the space between the conveyance mechanisms 20, and the glass substrate 4 is separated from the conveyance mechanism 20 to complete the supply of the glass substrate 4 to the glass substrate holding device 10. In this manner, the glass substrate 4 can be easily and surely supplied from the transport mechanism 20 without being in contact with the effective surface (upper surface) of the glass substrate 4 while adsorbing and holding the ineffective surface (lower surface) of the glass substrate 4. .

The protective sheet supply process is performed in parallel with the aforementioned glass substrate supply process. As shown in FIG. 4 and FIG. 5, in the supply of the protective sheet, first, the nip rolls 33a and 33b are used to pull from one of the pair of raw material rolls 31a and 31b (the raw material roll 31a in the illustrated example). The raw material 28 of a predetermined size is supplied to the raw material cutting device 30. In this state, the protective sheet 7 is produced by cutting the material 28 of a predetermined size by the material cutting device 30.

Specifically, the material 28 is supplied to the inclined surface 41a of the susceptor 41 by the nip rolls 33a and 33b, and is vertically downward along the inclined surface 41a. At or after the subsequent stage, the clamp mechanisms 47a to 47d are integrally raised with the slide bar 48 along the inclined surface 41a of the base 41, and the lower side portions of the material 28 are held by the clamp mechanisms 47a to 47d. In this state, the raw materials are taken from the raw materials by the nip rolls 33a, 33b. The roll 31a further pulls out the material 28, and supplies the raw material 28 to the inclined surface 41a, and in synchronization with the supply of the raw material 28, the jig mechanism 47a-d is integrated with the slide bar 48 and descends along the inclined surface 41a of the base 41. . In this manner, at the stage of supplying the material 28 having the size corresponding to the protective sheet 7 to the inclined surface 41a by the nip rolls 33a and 33b, the rotation of the nip rolls 33a and 33b and the lowering of the jig mechanisms 47a to 47d are caused. stop.

In this state, the pressing plate 43 is lowered, the material 28 is pressed against the inclined surface 41a, and the material 28 is cut by the cutter 44 to form the protective sheet 7. Then, after the upper portion of the protective sheet 7 is sucked by the suction plates 46a to 46c, the pressing plate 43 rises and separates from the protective sheet 7. Then, the clamp mechanisms 47a to 47d are further lowered together with the slide bar 48, and the upper side (cut side) of the protective sheet 7 is pulled down to the standby position of the protective sheet exposed below the pressing plate 43. During this period, the protective sheet 7 is pulled downward by moving the suction position formed by the suction plates 46a to 46c and sliding on the upper surfaces of the adsorption plates 46a to 46c.

Next, at a stage (see FIG. 6) in which the protective sheet 7 is pulled down to the standby position of the protective sheet, the suction plates 46a and 46c at both ends are slid along the direction in which the distance between them is extended, and the clamp mechanisms 47a and 47d at both ends are slid. Sliding in a direction in which the distance between them extends, the tension is applied to the protective sheet 7 in the width direction. Further, the protective sheet 7 is slid over the upper portion thereof by the suction plates 46a to 46c, and is pulled down by the clamp mechanisms 47a to 47d, so that the protective sheet 7 can be moved up and down. Apply tension. Thereby, the protective sheet 7 at the standby position of the protective sheet is in a state of being stretched in both the width direction and the vertical direction, so that it can be sure The problem of wrinkles on the protective sheet 7 before the protective sheet 7 is supplied to the protective sheet loading device 8 (protective sheet holding device 15) is prevented. Moreover, it is also possible to correctly position the protective sheet 7.

Then, on the protective sheet 7 that is held in a state where tension is applied as described above, the protective sheet holding device 15 is brought into contact as shown in Fig. 6 . In this state, both sides in the width direction of the protective sheet 7 are adsorbed and held on the side portions 18a, 18b of the protective sheet holding device 15, and the upper side of the protective sheet 7 is the upper side portion 17 of the protective sheet holding device 15 (clamp mechanism) 19a~19c) are clamped. At this time, the elevating plate 50 accommodated in the recess 49 of the susceptor 41 rises to the same plane as the inclined surface 41a of the susceptor 41, and is protected by the side portions 18a and 18b of the protective sheet holding device 15. The back side of the region where the sheet 7 is adsorbed and held is abutted in advance.

Then, at the stage where the holding of the protective sheet 7 formed by the protective sheet holding device 15 is completed, the holding of the protective sheet 7 formed by the suction sheets 46a to 46c and the clamp mechanisms 47a to 47d provided on the base 41 is released. And the protective sheet holding device 15 is separated from the inclined surface 41a of the base 41 to complete the supply of the protective sheet 7 to the protective sheet holding device 15. In this way, the protective sheet 7 is supplied to the protective sheet holding device 15 in a state where tension is applied, so that at the supply stage, the problem of wrinkles on the protective sheet 7 can be prevented. Further, as described above, the inclination angle α of the inclined surface 41a of the susceptor 41 is the same as or substantially the same as the inclination angle of the glass substrate 4 placed on the pallet 5 in the standing position, and therefore, is in the protective sheet. Similarly, the protective sheet 7 at the standby position has substantially the same posture as the glass substrate 4 on the pallet 5. Therefore, the protective sheet loading device 8 can change the posture of the protective sheet 7 as it is. The protective sheet 7 is placed on the pallet 5 in a posture. Thereby, the operation of the protective sheet loading device 8 can be simplified, and the loading operation of the protective sheet 7 can be speeded up.

As shown in Fig. 2, the protective sheet holding device 15 that has received the protective sheet 7 fixes the other side portion 18b, the clamp mechanism 19c on the side portion 18b side, and the center clamp mechanism 19b on the upper side portion 17. One of the side portions 18a slides in the direction away from each other, and tension is applied in the degree of the protection sheet 7. Therefore, the protective sheet 7 held in the protective sheet holding device 15 is in a state of being stretchable, and the problem that wrinkles occur on the protective sheet 7 before the loading on the pallet 5 can be prevented. Further, in order to make the stretch of the protective sheet 7 uniform, when the other side portion 18b slides by, for example, x mm, the slide mechanism is set so that the clip mechanism 19c on the other side portion 18b side slides by x mm. The jig mechanism 19b is set to slide x/2 mm.

In the execution of the above-described protective sheet supply process, if the residual amount of the raw material roll 31a in use is detected to be smaller than a predetermined amount by a sensor (not shown), the rotation of the holding rolls 33a and 33b is performed. Stop and the tension adjustment roll 40 moves downward. Then, the raw material 28 pulled out from the raw material roll 31a is sucked and held by the suction plate 34a, and the cut plate 36a and the engaging plate 37a are engaged with each other, and the raw material 28 is cut by the cutter 32a. From this state, the cylinder 35a is extended, and the suction plate 34a attached to the tip end thereof is overlapped with the suction plate 34b in standby, and the end portion of the raw material 28 that has been cut to the holding rolls 33a and 33b continuously is used. 38 is connected to the distal end portion of the raw material 28 pulled out from the raw material 31b in standby. When the connection of the raw material 28 is completed as such, the suction plate 34a returns to the original position, and the used raw material roll moves toward the raw material roll 31b. Then, using the raw material roll In the period of 31b, the raw material roll 31a having a residual amount of less than a predetermined amount is replaced with a new material roll, and the back surface side is sucked and held by the suction plate 34a in a state where the double-sided tape 38 is attached to the tip end portion, and is in a standby state. Thereby, at the time of replacement of the raw material roll 31a, the supply of the raw material 28 can be continued by using another raw material roll 31b. Further, since the raw material 28 pulled out from the other raw material roll 31b is connected to the raw material 28 in a state in which the roll 40 is adjusted by the tension, a certain tension can be maintained on the joined raw material 28, and The supply is performed from the nip rolls 33a and 33b in a predetermined size. Further, as described above, since the two suction plates 34a and 34b are provided in such a manner that their facing intervals are gradually increased, the top end of the raw material 28 of the raw material roll 31b (32a) which is in standby can be easily used. The part is pasted with two sides 38.

The lamination process is performed after the above-described glass substrate supply process and the protective sheet supply process. As shown in Fig. 7 (a), in the lamination process, the protective sheet 7 is placed on the upper surface of the glass substrate 4 placed in a standing position by the glass substrate loading device 6, wherein the protective sheet 7 is protected by the protection. The sheet holding device 8 protects the sheet holding device 15 to hold only the peripheral portion. Then, as shown in FIG. 7(b), the glass substrate 4 is placed on the upper surface of the protective sheet 7 in a state where the peripheral portion is held by the protective sheet holding device 15, and the glass substrate 4 is loaded by the glass substrate. The glass substrate holding device 10 of the device 6 holds the ineffective surface side. Then, as shown in FIG. 7(c), at the stage where the subsequent glass substrate 4 is placed on the protective sheet 7, the holding of the protective sheet 7 formed by the protective sheet holding device 15 is released. Thereafter, by repeating the above-described operation, the bag 5 is placed on the pallet 5 in a state in which the glass substrate 4 and the protective sheet 7 are alternately stacked in a standing posture. In this way, loading on the glass substrate The protective sheet 7 placed on the upper surface of the glass substrate 4 placed on the apparatus 6 by the protective sheet loading device 8 is a protective sheet before the subsequent glass substrate 4 is placed by the glass substrate loading device 6. Since the protective sheet holding device 15 of the loading device 8 holds the peripheral portion of the protective sheet 7, the problem of positional deviation or wrinkles on the protective sheet 7 can be prevented before the subsequent glass substrate 4 is placed. Then, at the stage of releasing the holding of the protective sheet 7 formed by the protective sheet holding device 15, since the protective sheet 7 has been sandwiched between the preceding glass substrate 4 and the subsequent glass substrate 4, It is also possible to prevent the problem of positional deviation or wrinkles on the protective sheet 7 after the event. Therefore, in a state in which the glass substrate 4 and the protective sheet 7 are alternately laminated, the size in the lamination direction is not unduly increased, and the glass substrate 4 having a predetermined number of sheets can be surely laminated on the pallet 5. And the bag. Moreover, since an undue gap is not formed between the glass substrate 4 and the protective sheet 7, it is possible to appropriately prevent the glass substrate 4 from being damaged. Further, since the protective sheet loading device 8 only holds the peripheral portion of the protective sheet 7 which is larger than the glass substrate 4, the glass substrate loading device 6 and the protective sheet loading device 8 can be prevented from interfering with each other, and the protective sheet loading device 8 can be used. In the state where the protective sheet 7 is held, the glass substrate 4 is placed on the glass substrate loading device 6 in a region other than the holding portion of the protective sheet 7 formed by the protective sheet loading device 8.

Further, the present invention is not limited to the above-described embodiments, and various modifications can be employed. For example, in the above-described embodiment, the glass substrate loading device 6 and the protective sheet loading device 8 are described, and the glass substrate 4 and the protective sheet 7 are alternately stacked and stacked in a standing position on the pallet 5, But it can also be applied The glass substrate 4 and the protective sheet 7 are alternately stacked on the pallet 5 in a horizontal posture and wrapped in a bag form.

Further, in the above-described embodiment, the protective sheet holding device 15 is configured such that the other side portion 18b can be freely contacted or separated from the one side portion 18a, but the both side portions can also be used. 18a, 18b are configured to move freely or separately from each other.

Further, in the above-described embodiment, the side portions 18a and 18b of the protective sheet holding device 15 are used, and the two sides of the protective sheet 7 in the width direction are attracted to a plurality of regions along the respective sides (and a plurality of suctions). Although the area corresponding to the hole X is adsorbed, the protective sheet 7 may be adsorbed and held on both sides in the continuous linear region along each side in the width direction.

In the above-described embodiment, the clamp mechanism 19a to 19c provided on the upper side portion 17 of the protective sheet holding device 15 is configured to hold the protective sheet 7 while holding the protective sheet 7, but It is also possible to carry out adsorption holding by a negative pressure action. Further, in the above-described embodiment, the configuration in which the protective sheet 7 is sandwiched by the side portions 18a and 18b of the protective sheet holding device 15 has been described. However, instead of the above-described adsorption holding, the protective sheet 7 may be sandwiched. The composition of the hold. These holding configurations can be selected as appropriate according to the exposed size of the protective sheet 7 from the glass substrate 4 and the exposed size of the protective sheet 7 from the pallet 5.

In the above-described embodiment, the case where the foamed resin sheet is used as the protective sheet 7 has been described. However, paper or a resin sheet or the like may be used as the protective sheet.

Further, in the above-described embodiment, the case where the glass substrate 4 to be wrapped is a glass substrate for FPD has been described as an example, but the glass substrate 4 to be coated may be used as a component for forming various electronic display functions. A glass substrate or the like used for the substrate of the film.

1‧‧‧Glass substrate package system

2‧‧‧Glass substrate supply device

3‧‧‧Protection sheet supply device

4‧‧‧ glass substrate

5‧‧‧Tray

6‧‧‧Glass substrate loading device

7‧‧‧Protection film

8‧‧‧Proof sheet loading device

9‧‧‧ Arms

10‧‧‧ glass substrate retention

11‧‧‧ base

12‧‧‧ Slider

13‧‧‧Adsorption pad

14‧‧‧ Arms

15‧‧‧Protection sheet retaining device

16‧‧‧ Slider

17‧‧‧Top Department

18a, 18b‧‧‧ side

20‧‧‧Transportation agencies

21‧‧‧Transportation volume

28‧‧‧ raw materials

29‧‧‧ Raw material supply device

30‧‧‧Material cutting device

33a, 33b‧ ‧ nip roll

Claims (6)

A protective sheet loading device is a protective sheet loading device for holding a protective sheet and placing it on a glass substrate by using a protective sheet holding device when the glass substrate and the protective sheet are alternately laminated on a pallet and wrapped in a bag; The protective sheet holding device has a pair of holding portions that are relatively freely movable or movable, the holding portions being the facing sides of the protective sheet, in a plurality of regions along each side thereof or along each of them Holding the continuous linear region of the side, and holding the pair of holding portions away from each other in a state in which the pair of holding portions are used to hold the facing sides of the protective sheet, and the protective sheet is along the aforementioned Tension is applied in a direction away from the pair of holding portions. The protective sheet loading device according to the first aspect of the invention, wherein the protective sheet holding device has an auxiliary holding portion that faces the four sides of the protective sheet except the one held by the pair of holding portions At least one of the remaining two sides other than the two sides is held in an auxiliary manner. The protective sheet loading device according to claim 2, wherein the auxiliary holding portion has a configuration in which the protective sheet is auxiliaryly held as described above, accompanied by the aforementioned pair of holdings. The extension of the portion away from the protective sheet is caused to move the auxiliary holding portion in a direction away from the pair of holding portions. The protective sheet loading device according to claim 3, wherein the auxiliary holding portion has a configuration in which the auxiliary holding portion is synchronized with the pair of holding portions and along the aforementioned pair Moving away from the direction of the retaining portion move. The protective sheet loading device according to any one of claims 1 to 4, wherein the protective sheet has stretchability. The protective sheet loading device according to any one of claims 1 to 4, wherein the protective sheet holding device has a configuration in which a protective sheet is held in a standing posture.