JP2005311038A - Pallet cassette and carrying in/out device for glass-shaped plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To respectively store glass-shaped plates, to reduce the bending of the glass-shaped plates, and to reduce a slot pitch between glass-shaped plates. <P>SOLUTION: A pallet cassette 10 is configured to store glass-shaped plates, and a bottom plate 11 on which liquid crystal substrates G are placed. Side frames 12 and 13 installed at the both sides of the bottom plate 11 and a connection frame 15 formed at the back side different from the side frames 12 and 13 are assembled at the bottom plate 11 so that a frame assembly 10' can be formed. The bottom plate 11 of the pallet cassette 10 is formed with three notches 17 opened to the front arranged in parallel. In the pallet cassette 10, side slip prevention pins 16 are protruded at the both side frames 12 and 13 so as to be protruded to the upper part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pallet cassette for glassy plates and a loading / unloading device for glassy plates, and in particular, a pallet cassette for storing glassy plates, and a loading / unloading device for loading / unloading glassy plates to / from the pallet cassette. About.

  When storing a liquid crystal substrate as a glass plate, a cassette is used. A conventional cassette is shown in FIG. In the cassette 1 shown in FIG. 1A, a plurality of substrate support beams 2 are arranged at predetermined intervals in the vertical direction on both sides of the cassette 1. As shown in FIG. 10B, a plurality of these substrate support beams 2 are provided intermittently in the horizontal direction. Therefore, the conventional cassette 1 has a box-like structure in which a large number of substrate support beams 2 are disposed. A plurality of liquid crystal substrates G can be obtained by placing the liquid crystal substrates G between the corresponding substrate support beams 2. Can be stored in upper and lower multi-stages (see Patent Documents 1 and 2).

And with respect to the cassette 1 which stores the liquid crystal substrate G, the board | substrate is carried in / out by the carrying-in / out apparatus 3 which consists of robots. That is, as shown in FIG. 11, a pick portion 3c is provided via the first arm 3a and the second arm 3b of the loading / unloading device 3, and the pick portion 3c can be advanced and retracted by the first and second arms 3a and 3b. The liquid crystal substrate G is inserted into and removed from the cassette 1.
As an apparatus for transporting a cassette by the carry-in / out apparatus 3, for example, a technique described in Patent Document 3 has been proposed.
JP 2001-338773 A JP 2002-302114 A Japanese Patent Laid-Open No. 10-315164 (page 2-3, FIGS. 1 to 3)

Incidentally, as shown in FIG. 10, the conventional cassette 1 has a simple structure in which both sides of the liquid crystal substrate G are supported by the substrate support beams 2. There was a problem of bending downward. In particular, the size of the liquid crystal substrate G is increasing today, and the degree of bending increases as the size of the liquid crystal substrate G increases. For this reason, in order to secure the interval between the liquid crystal substrates G, the slot pitch of the cassette 1 is set wide. Have been forced to do.
However, as the liquid crystal substrate G becomes larger, the amount of deflection becomes larger, so that not only the cassette 1 needs to be enlarged, but also the size of the pick portion 3c of the carry-in / out device 3 shown in FIG. However, when the glass plate G is taken out from the liquid crystal substrate G adjacent to the liquid crystal substrate G to be taken out, the pick portion 3c itself is bent by its own weight. Because of the interference, the slot pitch in the cassette 1 had to be further increased, and the cassette 1 had to be considerably enlarged.
Therefore, when the liquid crystal substrate G is enlarged, there is not only a problem that the cassette 1 and the loading / unloading device 3 must be enlarged, but also the other area, for example, the site area of the stocker shelf where the cassette 1 is installed in the factory. In addition, there is a problem in space that the volume becomes large.

  On the other hand, in order to narrow the slot pitch of the cassette 1, a wire cassette 4 has been proposed as shown in FIG. In the wire cassette 4 shown in FIG. 12, the wires 5 straddle both sides of the inside and are attached in the horizontal direction, and these wires 5 are also provided on the upper and lower stages, respectively, thereby the liquid crystal substrate G supported by the wires 5. Does not bend. However, in the wire cassette 4, since the wire 5 is attached in the lateral direction, when the liquid crystal substrate G is taken in and out by the pick unit 3 c of the transfer robot 3, the pick unit 3 c is caught by the wire 5. There is a problem that the transfer robot cannot be carried in and out.

  The present invention was made in consideration of such circumstances, and each glass-like plate such as a liquid crystal substrate can be individually stored, and even when stored, the glass-like plate can be prevented from bending, An object of the present invention is to provide a novel pallet cassette capable of reducing the slot pitch between glass plates, and to achieve a desired glass shape despite the small slot pitch between glass plates in the pallet cassette. It aims at providing the carrying-in / out apparatus of the glass-like board which can take in / out a board to a desired position.

In order to achieve the above object, the present invention proposes the following means.
The invention according to claim 1 is a pallet cassette for individually storing glass-like plates, and is provided on the bottom plate on which the glass-like plate is placed, and on both sides of the bottom plate, and extends outward. A frame assembly having a front opening is formed by a side frame having a lifting handle portion and a connecting frame provided on a rear side portion of the bottom plate excluding the side frame. A plurality of notches opened toward the front side portion facing the connecting frame are provided.
As a result, when the pallet cassettes in which the glassy plates are stored are stacked in the vertical direction, the glassy plates can be prevented from bending, and the bottom plate supports the glass substrate, so that it is stored in the pallet cassette. The slot pitch between the glassy plates can be reduced.
According to a second aspect of the present invention, in the pallet cassette according to the first aspect, when the frame assemblies are stacked in the vertical direction, a deflection preventing plate is provided which contacts and supports the bottom portion on the front side of the frame assemblies. Features.
Thereby, when a pallet cassette is stacked, since a bending prevention board supports a bottom board, it can prevent that a pallet cassette bends.
According to a third aspect of the present invention, in the pallet cassette according to the first or second aspect, a skid prevention pin that protrudes upward is provided at the top of the side frame, and the side slip is provided at the bottom of the side frame. A groove for fitting the prevention pin is formed.
As a result, when the pallet cassettes are stacked, the pallet cassettes can be neatly aligned vertically without shifting sideways, and the pallet cassettes can be stacked stably and the stacked state can be maintained stably. be able to.
The invention according to claim 4 is a glass plate loading / unloading device for loading and unloading the glass plate with respect to the desired pallet cassette when the pallet cassette according to any one of claims 1 to 3 is stacked vertically. A pallet loading / unloading mechanism and a loading / unloading mechanism, the pallet loading / unloading mechanism having a lifting claw for lifting the lifting handle of the pallet cassette to raise and lower the pallet cassette; The lifting claw secures a space necessary for the operation of the loading / unloading mechanism in the vertical direction of the desired pallet cassette from among the pallet cassettes stacked on each other. The pallet cassette can be placed and has a pick portion to be inserted into the notch of the pallet cassette, and the desired pallet cassette by the pallet lifting mechanism When the said space in the vertical direction is ensured, characterized in that out of the glassy plate relative to said desired pallet cassette.
Thus, although the glass plate can be stored with a small slot pitch, when the glass plate is loaded / unloaded, the loading / unloading mechanism operates in the vertical direction of the desired pallet cassette by the pallet lifting / lowering mechanism. Since the necessary space can be ensured, the glass plate can be taken in and out satisfactorily.

  According to the first aspect of the invention, when the pallet cassettes in which the glassy plates are stored are stacked in the vertical direction, not only can the glassy plates bend but also the individual pallet cassettes bend. As a result, the slot pitch between the glass plates stored in the pallet cassette can be reduced, so that space saving can be ensured, and the site area and volume of the pallet cassette are increased accordingly. The effect which can avoid becoming is acquired.

  According to the invention which concerns on Claim 2, it can prevent that a pallet cassette bends and can attain space saving of a pallet cassette reliably.

  According to the third aspect of the invention, the pallet cassettes can be neatly aligned in the vertical direction without being shifted laterally, so that the pallet cassettes can be stably stacked and the stacked state can be stably maintained. can get.

  According to the fourth aspect of the present invention, the glass-like plate can be stored with a small slot pitch, but when the glass-like plate is carried in / out, it is necessary for the operation of the carry-in / out mechanism by the pallet lifting / lowering mechanism. Since a large space can be secured, the glass plate can be taken in and out satisfactorily, and an effect of providing a carry-in / out device suitable for a large liquid crystal substrate or the like can be obtained.

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing a pallet cassette according to an embodiment of the present invention. FIG. 1 is an overall perspective view showing a state in which the pallet cassettes are stacked. FIG. 2 is an explanatory view showing the pallet cassette. 3 is a perspective view for explanation when a target glass plate (liquid crystal substrate) is taken out from the stacked pallet cassettes.
The pallet cassettes 10 of this embodiment shown in FIG. 1 are stacked in the height direction. The pallet cassette 10 is for individually storing the liquid crystal substrates G as glass-like plates one by one, and as shown in FIG. 2A, a bottom plate 11 on which the liquid crystal substrate G is placed; The side frames 12 and 13 provided on both sides of the bottom plate 11 and the connecting frame 15 provided on the rear side of the bottom plate 11 different from the side frames 12 and 13 are assembled. A frame assembly 10 'is formed.

  As shown in FIG. 2C, the bottom plate 11 is a plate that has a size that allows the liquid crystal substrate G to be placed and has an appropriate thickness, and is formed in a square shape. 2 (a) and 2 (c), the side frames 12 and 13 are respectively disposed on opposite side portions of the bottom plate 11, and are formed to stand above the bottom plate 11, A lifting handle 14 extending outwardly from the outside is provided. As shown in FIGS. 2A and 2C, the connecting frame 15 is disposed on the rear side of the bottom plate 11 so as to have the same height as the side frames 12 and 13. It is attached integrally with the frames 12 and 13.

In addition, the bottom plate 11 of the pallet cassette 10 is provided with three notches 17 opened in parallel toward the front, and is formed in a comb shape as a whole. This notch 17 is used by a carry-in / out device 20 described later.
Accordingly, the pallet cassette 10 is opened at the front of the frame assembly 10 'so that the liquid crystal substrate G can be taken in and out from the open side.

Further, the pallet cassette 10 has side slip prevention pins 16 projecting upward on both side frames 12 and 13. As shown in FIGS. 2A to 2C, a plurality of the anti-slip pins 16 are erected on the both side frames 12 with a predetermined interval along the length direction thereof.
When the pallet cassettes 10 are stacked as shown in FIG. 1, the anti-slip pins 16 of any one of the lower pallet cassettes 10 are placed on both side frames 12 and 13 of the upper pallet cassette 10 adjacent thereto. By fitting into a groove (not shown) provided, the stacked pallet cassettes 10 are stacked in a state of being aligned with each other so as not to be shifted laterally. Therefore, the grooves are provided on the bottom surfaces of the side frames 12 and 13 so as to correspond to the anti-slip pins 16.

Further, if the notch 17 is provided in the bottom plate 11, the rigidity of the frame assembly 10 'is reduced by that amount, but in order to eliminate this, a deflection preventing plate 18 is provided. As shown in FIG. 2 (b), the bending prevention plate 18 has a shape bent along the bottom plate 11 and the bottoms on the front side of the side frames 12 and 13 and also along the lifting handle 14. ing.
Then, when the pallet cassettes 10 are stacked as shown in FIG. 1, as shown in FIG. 3, the bottom plate 11 and the side frames 12, 13 are in front of the bottoms on the open side of the respective frame assemblies 10 '. The pallet cassettes 10 </ b> B and 10 </ b> C are prevented from being bent by the bend prevention plate 18 being brought into contact with the portion from below.
In FIG. 3, when the pallet cassette 10A is lifted from the pallet cassette 10C, the bending prevention plate 18 is drawn away from the pallet cassette 10A. Details thereof will be described later. Further, in FIG. 1, the bending prevention plate 18 is omitted for convenience of drawing.

  Such pallet cassettes 10 are stacked up and down on the base 21 of the pallet cassette station with the liquid crystal substrate G stored therein, as shown in FIG. The plate loading / unloading device 20 allows the liquid crystal substrate G to be loaded and unloaded from the desired pallet cassette 10. 4 is an explanatory view showing a state in which the pallet cassettes are stacked on the pallet cassette station, FIG. 5 is an explanatory view showing a carry-in / out mechanism for carrying out the liquid crystal substrate to / from the pallet cassette, and FIG. 6 is a pick of the carry-in / out mechanism. It is explanatory drawing which shows the state which the part took out the board | substrate from the pallet cassette.

  As shown in FIG. 4, when the pallet cassette 10 is in a state in which a plurality of pallet cassettes 10 are stacked on the pallet base 22 provided on the base 21 in the pallet cassette station, the carry-in / out device 20 is moved out of the pallet cassettes 10. 3, the desired pallet cassette 10A is separated from the upper and lower pallet cassettes 10B and 10C adjacent to the desired pallet cassette 10A by a predetermined distance, and the desired pallet cassette is separated from the upper and lower pallet cassettes 10B and 10C. The liquid crystal substrate G is taken in and out of 10A.

The loading / unloading device 20 is roughly configured to include a pallet lifting / lowering mechanism 30 shown in FIG. 4 and a loading / unloading mechanism 40 shown in FIG.
As shown in FIG. 4, the pallet lifting mechanism 30 is disposed on each side of the pallet cassette 10 stacked on the pallet base 22, and lifts the pallet cassette 10 by abutting against the lifting handle 14 of the pallet cassette 10. It has a claw 31 and a lift drive unit 33 and a telescopic drive unit 34 as drive means for moving the lift claw 31 up and down.

The lifting claws 31 are composed of two sets configured in the same manner so as to face each other in the vertical direction. A plurality of lifting claws 31 are arranged at appropriate intervals along the horizontal direction on the distal end side of the base plate 32 facing each other in the vertical direction. Is provided. Hereinafter, for convenience of explanation, the lower lifting claw 31 is referred to as “first lifting claw 31A”, and the upper lifting claw 31 is referred to as “second lifting claw 31B”.
The elevating drive unit 33 is provided upright on the base 21 and elevates and lowers the first lifting claw 31A and the second lifting claw 31B independently. The telescopic drive unit 34 advances and retracts the first lifting claw 31A and the second lifting claw 31B in the horizontal direction.

On the other hand, as shown in FIGS. 5 and 6, the carry-in / out mechanism 40 includes a first arm 41, a second arm 42 pivotally attached to the tip of the first arm 41, and a support portion at the tip of the second arm 42. And a drive unit (not shown) for driving the first arm 41 and the second arm 42 to move the pick unit 44.
The pick portion 44 is inserted into the notch 17 of the bottom plate 11 of the pallet cassette 10 so that the liquid crystal substrate G can be taken out from the pallet cassette 10 or the liquid crystal substrate G can be put into the pallet cassette 10. Yes. Therefore, the pick portion 44 has a width and length that can be inserted into the notch 17 of the bottom plate 11 and is formed in a plate shape on which the liquid crystal substrate G can be placed.

Since the pallet cassette 10 of this embodiment is configured as described above, its operation will be described next.
First, the liquid crystal substrate G is stored in the pallet cassette 10 in advance, and the pallet cassette 10 in which the liquid crystal substrate G is stored is stacked up and down as shown in FIG.
In this case, each of the pallet cassettes 10 is in contact with the bending prevention plate 18 from below at the bottom on the open side which is the front. Further, when the pallet cassettes 10 are stacked, each of the pallet cassettes 10 is provided with side slip prevention pins 16 on both side frames 12 and 13, and the pallet cassettes 10 on which the slip prevention pins 16 are overlapped. It fits into the groove | channel provided in the both-sides side frames 12 and 13. FIG.

In this way, when the pallet cassettes 10 in which the liquid crystal substrates G are stored are stacked in the vertical direction, the liquid crystal substrates G are placed on the bottom plate 11, and the bottom plate 11, the side frames 12 and 13, and the connecting frame 15 Since the frame assembly 10 'is formed, not only can the liquid crystal substrate G bend, but also individual pallet cassettes 10 can be prevented from bending.
In addition, the height of the pallet cassette 10 itself is small compared to the cassette 1 of the prior art using the substrate support beam 2, and the overall height when the pallet cassettes 10 are superposed can be reduced. The distance between the liquid crystal substrates G in the height direction, that is, the slot pitch between the liquid crystal substrates G stored in the pallet cassette 10 can be reduced.

Further, when the pallet cassettes 10 are stacked, the front bottom portion of the frame assembly 10 'is supported by the deflection preventing plate 18 (see FIGS. 2 and 3), so that the pallet cassette 10 is prevented from being bent. And the reliability of the pallet cassette 10 can be improved.
Further, when stacked, the skid prevention pins 16 projecting on the upper sides of the side frames 12 and 13 of the pallet cassette 10 are fitted in the grooves of the side frames 12 and 13 of the upper pallet cassette 10, so that the pallet When the cassettes 10 are stacked, the pallet cassettes 10 can be neatly aligned vertically without shifting sideways, the pallet cassettes 10 can be stacked stably, and the stacked state can be maintained stably. Can do.

Next, operation | movement of the carrying in / out apparatus 20 in a pallet cassette station is demonstrated concretely below using FIGS.
When the carry-in / out device 20 is instructed by a control device (not shown), the liquid crystal substrate G is taken out by operating as follows.
That is, when the liquid crystal substrate G to be taken out is designated in the carry-in / out device 20, the first lifting claw 31A and the second lifting claw 31B of the pallet lifting mechanism 30 are moved up and down as shown in FIG. When the first and second lifting claws 31A and 31B are advanced by the telescopic drive unit 34 as shown by the arrow B shown in FIG. As shown in FIG. 8A, the first lifting claw 31A and the second lifting claw 31B abut against the lower part of the lifting handle 14 of the corresponding pallet cassette 10.
In this case, the first lifting claw 31A comes into contact with the lifting handle 14 of the pallet cassette 10A storing the target liquid crystal substrate G, and the second lifting claw 31B is superimposed on the pallet cassette. It contacts the lifting handle 14 of 10B.

  Then, the first lifting claw 31A and the second lifting claw 31B are driven by the lift drive unit 33 as indicated by an arrow C shown in FIG. As indicated by the arrow D shown in b), the lifting claws 31A and 31B synchronously lift the pallet cassettes 10A and 10B. As a result, the pallet cassette 10A and the adjacent pallet cassette 10C below the pallet cassette 10A are separated by a predetermined distance.

In this case, when the second lifting claw 31B lifts the pallet cassette 10B, as shown in FIG. 3, it comes into contact with the deflection preventing plate 18 associated therewith and can lift it integrally with the pallet cassette 10B. Since the 1 lifting claw 31A is positioned so that the deflection preventing plate 18 is detached from the target pallet cassette 10A, when the pallet cassette 10A is lifted, the deflection preventing plate 18 is removed.
As shown in FIG. 3, the deflection preventing plate 18 removed from the pallet cassette 10A remains as it is on the lower pallet cassette 10C.

Thereafter, of the first and second lifting claws 31A and 31B, only the second lifting claw 31B is further lifted slightly by the lift drive unit 33 as indicated by an arrow E shown in FIG. Is separated from the upper pallet cassette 10B adjacent to a predetermined distance.
As a result, the target pallet cassette 10A and the upper and lower pallet cassettes 10B and 10C adjacent thereto are separated by a predetermined distance as shown in FIG.

In this way, when the pallet cassette 10A storing the target liquid crystal substrate G and the upper and lower pallet cassettes 10B and 10C adjacent to the pallet cassette 10A are separated from each other by a predetermined distance, The carry-in / out mechanism 40 is driven.
That is, in the loading / unloading mechanism 40, as shown by the arrow X shown in FIG. 5, the pick portion 44 is advanced in the horizontal direction by driving the first arm 41 and the second arm 42, and the notch 17 of the bottom plate 11 of the pallet cassette 10A. Then, the pick part 24 is lifted slightly in the pallet cassette 10A to lift the liquid crystal substrate G, and then in the lifted state, recedes linearly as shown by the arrow Y shown in FIG. Thus, the target liquid crystal substrate G is taken out from the pallet cassette 10.
After that, the pallet cassette 10A from which the liquid crystal substrate G has been taken out is lowered by the operation of the first lifting claw 31A so as to be brought into contact with the bending prevention plate 18 again. They are stacked by the lowering of the lifting claws 31B.

  Therefore, according to the carry-in / out device 20, when the pallet cassettes 10 are stacked, the pallet elevating mechanism 30 includes the pallet cassette 10A in which the target liquid crystal substrate G is stored, and the upper and lower stages adjacent thereto. By separating the pallet cassettes 10B and 10C from each other by a predetermined distance, a space necessary for the operation of the carry-in / out mechanism 40 is secured, and then the carry-in / out mechanism 40 takes out the target liquid crystal substrate G from the pallet cassette 10A by the pick unit 44. Therefore, the desired liquid crystal substrate G can be reliably taken out. Such a thing can also put a liquid crystal substrate in the pallet cassette 10 stacked | stacked in the empty state, when the carrying in / out apparatus 20 operate | moves by the reverse form with the above.

  As a result, compared with the prior art such as the wire cassette 4, there is no fear that the pick portion 44 of the carry-in / out device 20 is caught on the anti-bending plate 18, and the liquid crystal substrate G can be carried out and carried in well. Although the slot pitch between the liquid crystal substrates G in the pallet cassette 10 is small, the desired liquid crystal substrate G can be taken in and out at a desired position, and the liquid crystal substrate G can be taken in and out satisfactorily.

In the carry-in / out device 20, in the above-described embodiment, an example in which the target liquid crystal substrate G is taken out from the stacked pallet cassette 10 </ b> A in the middle in the height direction is shown. The operation 20 is slightly different depending on the position of the pallet cassette 10A.
For example, when the pallet cassette 10A is located at the lowest level, it can be dealt with by operating in the same manner as described above. However, when it is located at the highest level, it can be dealt with by the operation of only the second lifting plate 31B or in synchronization therewith. By moving the first lifting plate 31A driven in this manner, the liquid crystal substrate can be carried out and carried in only by being separated from the lower pallet cassette 10C adjacent thereto by a predetermined distance. Accordingly, the present invention is not limited to the above-described embodiment. In short, it is only necessary to secure a space necessary for the carry-in / out mechanism 40 to carry in / out the target pallet cassette 10A.
In addition, an example in which a liquid crystal substrate can be taken in and out by using a carry-in / out device with respect to the pallet cassette 10 has been shown, but the liquid crystal substrate G can also be attached by a transfer device such as a conveyor having the same function as the carry-in / out device. Can be stored.
And although the example which stores the liquid crystal substrate G as a glassy board was shown, it applies not only to the liquid crystal board G but when storing other glassy boards, and the same effect can be acquired. Of course.

  Furthermore, in the present embodiment, the carry-in / out mechanism 40 carries in and out the liquid crystal substrate G as a target glass plate from the pallet cassette 10, but with the liquid crystal substrate G stored in the pallet cassette 10, the pallet The cassette 10 may be carried in and out.

It is a whole perspective view which shows the state which laminated | stacked the pallet cassette which concerns on one embodiment of this invention. It is explanatory drawing which shows a pallet cassette. It is an explanatory perspective view when taking out the liquid crystal substrate as a target glass-like board from the stacked pallet cassette. It is explanatory drawing which shows the state which piled up the pallet cassette in the pallet cassette station. It is a figure which shows the carrying in / out mechanism for carrying out a liquid crystal substrate with respect to a pallet cassette, Comprising: It is explanatory drawing which shows the state by which the pick part of the carrying in / out mechanism was inserted in the pallet cassette. It is explanatory drawing which shows the state from which the pick part of the carrying in / out mechanism similarly took out the board | substrate from the pallet cassette. It is a figure which shows operation | movement of the pallet raising / lowering mechanism in a pallet cassette station, Comprising: (a) is explanatory drawing which a raising nail | claw descends to a desired pallet cassette, (b) is a lifting claw positioned to a desired pallet cassette, and advances. It is explanatory drawing. It is a figure which similarly shows the operation | movement of the pallet raising / lowering mechanism in a pallet cassette station, Comprising: (a) is explanatory drawing which shows the state which the raising nail contacted the desired pallet cassette, (b) is a lifting pallet with a desired pallet cassette. It is explanatory drawing which shows the state which lifted the pallet cassette above it. It is explanatory drawing which shows the state which made the liquid crystal substrate accessible to the desired pallet cassette by the lifting claw of the pallet lifting mechanism. It is a figure which shows the conventional cassette, Comprising: (a) is a front view which shows the state which stored the glass-like board, (b) is a top view of (a). It is explanatory drawing which shows the carrying in / out mechanism which carries in / out a glass-like board with respect to the conventional cassette. It is a figure which shows the conventional wire cassette, Comprising: (a) is a front view which shows the state which stored the glass-like board, (b) is a top view of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Pallet cassette 11 Bottom plate 12, 13 Side frame 14 Lifting handle part 15 Connection frame 16 Side slip prevention pin 17 Notch 18 Deflection prevention plate 20 Loading / unloading device 30 Pallet raising / lowering mechanism 31, 31A, 31B Lifting claw 40 Loading / unloading mechanism 44 Pick Part G Glass-like plate (liquid crystal substrate)

Claims (4)

A pallet cassette for individually storing glass-like plates,
Excluding the bottom plate on which the glass plate is placed, a side frame having lift handles provided on both sides of the bottom plate and extending to the outside, and the side frame of the bottom plate With the connecting frame provided on the rear side part, a frame assembly with an open front is formed,
A pallet cassette having a plurality of notches opened toward a front side portion opposed to the connection frame on the bottom plate. The pallet cassette according to claim 1,
A pallet cassette, wherein a deflection preventing plate is provided to support the frame assembly in contact with a bottom portion on the front side of the frame assembly when the frame assemblies are stacked in the vertical direction. In the pallet cassette according to claim 1 or 2,
The pallet cassette is characterized in that a skid prevention pin protruding upward is projected on the upper part of the side frame, and a groove for fitting the skid prevention pin is formed at the bottom of the side frame. . A pallet loading / unloading device for loading and unloading a glassy plate with respect to a desired pallet cassette when the pallet cassette according to any one of claims 1 to 3 is stacked vertically. And a loading / unloading mechanism,
The pallet loading / unloading mechanism has a lifting claw for lifting the lifting handle portion of the pallet cassette to raise and lower the pallet cassette, and a desired pallet is selected from each pallet cassette stacked by the lifting claw. Secure the space required for the operation of the carry-in / out mechanism in the vertical direction of the cassette,
The carry-in / out mechanism has a pick portion on which the glass plate can be placed and is inserted into the notch of the pallet cassette, and the space is secured in the vertical direction of the desired pallet cassette by the pallet lifting mechanism. The glass-like plate loading / unloading device is characterized in that the glass-like plate is taken in and out of the desired pallet cassette.

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