Abstract:
A cassette for placing a glass substrate, which includes an upper frame, a lower frame the same as the upper frame, and four pillars standing between the upper and lower frames to form asapce. The cassette fabricated structure further includes a plurality of rib racks set up on lateral sides of the upper and lower frames, a plurality of ribs set up on the rib rack, and grooves formed by adjacent ribs for placing the glass substrate.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     The present invention relates to a cassette, and more particularly, to a glass substrate cassette, which can be assembled or disassembled quickly and easily.  
         [0003]     2. Description of the Prior Art  
         [0004]     The glass substrate plays an important role in the LCD and the PDP panel monitor industry, and has a role similar to the wafer of the semiconductor industry. The glass substrate is delivered several times between different tools during each process in manufacturing.  
         [0005]     Please refer to  FIG. 1 .  FIG. 1  is a front view diagram of a cassette  100  according to the prior art. The cassette  100  comprises a frame  102 , rib  104  and a slot  106 . The frame  102  is a complete cube frame sapce, which is made using twelve metal sticks for assembling the twelve edges of the cube. The left and right opposite lateral sides of the frame  102  further comprise a plurality of ribs  104 . Each set of ribs  104  are disposed at the same height, are create a panel. A slot is created between each panel and the panel above it, and the slot is able to contain a glass substrate. The prior art cassette  100 , frame  102 , and ribs  104  are welded together, and cannot be disassembled easily. In the 6th generation, the glass substrate cassette has had a width of 1633 millimeters, a depth of 1960 millimeters, and a height of 2200 millimeters. Even, if the cassette  100  does not carry any glass substrates, the weight of it is 247 kilograms. That restricts the prior art cassette to being moved only by a stocker, a rail guided vehicle (RGV), or an automatic guiding vehicle (AGV).  
         [0006]     Please refer to  FIG. 2 .  FIG. 2  is an overlook diagram of the cassette according to the prior art. Each glass substrate  108  is supported ribs  104  on the left and right sides of the frame  102 . When the glass substrate  108  is held by the ribs  104 , a rail guided vehicle can move whole frame  102 , and the glass substrates  108  in the frame  102  can move to an appropriate position. Then, a robot  200  will line up each glass substrate  108  to move it to the appropriate position for manufacturing.  
         [0007]     If the stocker, the rail guided vehicle (RGV), or the automatic guiding vehicle (AGV) are broken, people can still move the 4th or 5th generation vacant cassettes by hand. However, as above mentioned, the weight of the 6th generation vacant cassette is 247 kilograms. It only can be moved by machine vehicles, and people are not able to move the cassette by hand. This causes process delays and the quality of products is influenced. So, how to design a mobile glass substrate cassette for solving this problem is an important topic.  
       SUMMARY OF THE INVENTION  
       [0008]     The present invention relates to a cassette, and more particularly, to a glass substrate cassette, which can be assembled or disassembled quickly and easily.  
         [0009]     The present invention provides a cassette, which comprises an upper frame, a lower frame the same as the upper frame, and four pillars standing between the upper and lower frames to form asapce. The cassette fabricated structure further comprises a plurality of rib racks set up on lateral sides of the upper and lower frames, a plurality of ribs set up on the rib rack, and grooves formed by adjacent ribs for placing the glass substrate.  
         [0010]     The weight of the cassette according to the present invention is only a little more than 30 kilograms. Comparing with the 247 kilograms of the 6th generation cassette according to the prior art, the present invention is lighter. The present invention can be assembled or be disassembled quickly and easily, so the mobility increases. When the machine vehicle is broken, the present invention cassette can be moved by people or can be disassembled. So, the present invention can achieve the prior art effect, but has lighter weight and higher mobility.  
         [0011]     These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0012]      FIG. 1  is a front view diagram of a cassette according to the prior art.  
         [0013]      FIG. 2  is an overlook diagram of the cassette according to the prior art.  
         [0014]      FIG. 3  is a three-dimensional diagram of a cassette according to the present invention.  
         [0015]      FIG. 4  is a schematic diagram of the triangular rib rack combined with the lower frame according to the present invention.  
         [0016]      FIG. 5  is a three dimensional schematic diagram of the skid-proof cover and the orientation cover fixed on the rib. 
     
    
     DETAILED DESCRIPTION  
       [0017]     Please refer to  FIG. 3 .  FIG. 3  is a three-dimensional diagram of a cassette according to the present invention. The cassette  300  comprises a plane upper frame  302 , a plane lower frame  304 , four vertical pillars  306 , a plurality of rib fixed racks  308 , a plurality of ribs  310 , a plurality of triangular rib racks  314 , and a plurality of triangular pillar racks  316 . Furthermore, the upper frame  302  and lower frame  304  are identical rectangular frames, the upper frame  302  disposed on top of the cassette  300 , the lower frame  304  is disposed on bottom. Four square metal pillars are pillars  306  of a cube, and all of them combine to form the cube frame sapce. The upper frame  302 , the lower frame  304  and each pillar  306  are combined with the triangular pillar rack  316 . The triangular pillar rack  316  helps each pillar  306  to be assembled or disassembled with the upper frame  302  and the lower frame  304 . In the other embodiment of the present invention, the pillar rack  316  is not necessary. The upper frame  302 , the lower frame  304 , and each pillar  306  are able to combine together, without the pillar rack  316 . Moreover, the left and opposite right lateral sides of the upper frame  302  and the lower frame  304  further combine with rib fixed racks  308 . The rib fixed rack  308  is assembled or disassembled with the triangular rib rack  314  using a screw or a tenon. The triangular rack  314  is also assembled with the upper frame  302  or the lower frame  304  using a screw or a tenon. In addition, the rib fixed rack  308  is assembled with the stainless steel rib  310  using a screw or a tenon. The ribs  310  are each the same height, create a panel, and form slots  312  between each panel and the panel above it. The slot  312  can contain a glass substrate  318 . Each glass substrate  318  can be supported by eight ribs  310  of left and opposite right lateral sides. The cassette  300  can carry the glass substrate.  
         [0018]     As  FIG. 3  shows, in the embodiment of the present invention, the size of the upper frame  302  and lower frame  304  of the cassette  300  can be rectangular in shape, and have a width of 1633 millimeters and a depth of 1960 millimeters. The pillar  306  has a height of 2124 millimeters. The distance between adjacent rib racks is 500 millimeters. So, one lateral side of the upper frame  302  can have four rib fixed racks  308 , and the opposite lateral side can have the other four rib fixed racks  308 . The height of the rib fixed rack  308  is 237 millimeters, and the rib fixed rack  308  is assembled with the rib  310  with a screw or a tenon. The distance between adjacent ribs is  68  millimeters, and one rib fixed rack  308  can be used to assemble three ribs  310 . The slot  312  can contain the glass substrate  318 . The lower frame  304  has the same rib fixed rack  308  and the rib  310  in positions corresponding to those of the upper frame  3025 . The construction of the cube frame can contain the glass substrate  318  safely, and the glass substrate  318  can be transported easily.  
         [0019]     Please refer to  FIG. 4 .  FIG. 4  is a schematic diagram of the triangular rib rack combined with the lower frame  304  according to the present invention. The rib fixed rack  308  is assembled with the triangular rib rack  314  with a screw or a tenon, and the triangular rib rack  314  and the rib fixed rack  308  are assembled with the lower frame  304  with a screw or a tenon to fix the triangular rib rack  314  on the lower frame  304 . As  FIG. 4  shows, the rib  310  is embedded into the rib fixed rack  308 , and a screw (not shown) is inserted into a screw aperture  402  to fix the rib  310  on the fixed rib rack  308 . Of course, that is able to use the tenon (not shown) to achieve the same goal. This kind of combination allows the present invention to be assembled and disassembled easily and quickly.  
         [0020]     Please refer to  FIG. 5 .  FIG. 5  is a three dimensional schematic diagram of the skid-proof cover  502  and the orientation cover  506  fixed on the rib  310 . As  FIG. 5  shows, each rib  310  has an orientation cover fillister  508  and two skid-proof cover fillisters  504 . The orientation cover  506  is embedded into the orientation cover fillister  508 , and the skid-proof cover is embedded into the skid-proof cover fillister  504 . The skid-proof cover  502  is made out of PVC or rubber. This material can increase the friction between the glass substrate (not shown) and the rib  310 , and prevent the glass substrate (not shown) from being scraped. Otherwise, the orientation cover  506  can also be made from plastic or rubber. The orientation cover  506  further comprises a vertical block  510 , which is perpendicular to the rib  310 . When the glass substrate (not shown) is placed on the rib  310 , the vertical block  510  can prevent the glass substrate (not shown) from falling. In this embodiment, the rib  310  is assembled with the pillar  306 , a screw is inserted into a screw aperture  402  to fix the rib  310 , and the pillar  306  is assembled with the lower frame  304  by the triangular rib rack  314 .  
         [0021]     The weight of the cassette according to the present invention is only a little more than 30 kilograms. Comparing with the 247 kilograms of the 6th generation cassette according to the prior art, the present invention cassette is lighter. The present invention cassette can be assembled or be disassembled quickly and easily, so the mobility increases. When the machines vehicle is broken, the present invention can be moved by people or can be disassembled. So, the present invention can achieve the prior art effect, but has lighter weight, higher mobility, easier enlargement, easier disassembly, and easier combination.  
         [0022]     Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.