KR20050082550A - Cassette lifter system and method for lifting the cassette using the same - Google Patents

Abstract

The present invention relates to a cassette lifter system capable of reducing the inter-layer transfer time of cassettes between different buildings, and an interlayer cassette conveying method using the same. The present invention relates to a cassette lifter system for interlayer conveying a cassette containing a plurality of substrates for a liquid crystal display device. A cage for elevating the floors of each building along a moving passage located between each building, and carrying a cassette therein to convey the cassette to each floor of each building; A plurality of external doors formed between each floor of each building and the moving passages to open and close each floor of each building and the moving passages; It is provided in the cage to correspond to each exterior door of the same floor of each building, it is configured to include a plurality of inner doors for opening and closing the inside of the cage.

Description

Cassette lifter system and method for lifting the cassette using the same

The present invention relates to various equipment of a liquid crystal display device, and more particularly, to a cassette lifter system and an interlayer cassette conveying method using the same, which can increase the interlayer conveyance efficiency of a cassette containing a plurality of liquid crystal display substrates.

As the information society develops, the demand for display devices is increasing in various forms, and in recent years, liquid crystal displays (LCDs), plasma display panels (PDPs), electro luminescent displays (ELDs), and vacuum fluorescent displays (VFDs) have been developed. Various flat panel display devices have been studied, and some of them are already used as display devices in various devices.

Among them, LCD is the most widely used as a substitute for CRT (Cathode Ray Tube) for the use of mobile image display device because of the excellent image quality, light weight, thinness, and low power consumption, and mobile type such as monitor of notebook computer. In addition, it is being developed in various ways, such as a television for receiving and displaying broadcast signals, and a monitor of a computer.

As described above, although various technical advances have been made in order for the liquid crystal display device to serve as a screen display device in various fields, the task of improving the image quality as the screen display device has many advantages and disadvantages.

Therefore, in order to use a liquid crystal display device in various parts as a general screen display device, the key to development is how much high definition images such as high definition, high brightness, and large area can be realized while maintaining the characteristics of light weight, thinness, and low power consumption. It can be said.

Such a liquid crystal display device may be broadly divided into a liquid crystal panel displaying an image and a driving unit for applying a driving signal to the liquid crystal panel, wherein the liquid crystal panel includes a space between the first and second substrates, and It consists of the liquid crystal layer injected between the 1st, 2nd board | substrate.

The first substrate (TFT array substrate) may include a plurality of gate lines arranged in one direction at a predetermined interval, a plurality of data lines arranged at regular intervals in a direction perpendicular to the gate lines, and the respective gates. A plurality of thin film transistors which are switched by signals of the gate line and a plurality of pixel electrodes formed in a matrix form in each pixel region defined by crossing a line and a data line, transmit a signal of the data line to each pixel electrode. Formed.

In addition, the second substrate (color filter substrate) includes a black matrix layer for blocking light in portions other than the pixel region, an R, G, and B color filter layers for expressing color colors, and a common electrode for implementing an image. Is formed.

The first and second substrates have a predetermined space by spacers and are bonded by a sealant to form a liquid crystal between the two substrates.

The manufacturing process of the liquid crystal display device configured as described above can be roughly divided into three processes, a substrate manufacturing process, a cell manufacturing process, and a module process.

First, the substrate manufacturing process is divided into a thin film transistor manufacturing process and a color filter manufacturing process using the cleaned first and second substrates, respectively. First, the thin film transistor manufacturing process refers to a process of manufacturing a plurality of thin film transistors and pixel electrodes on the first substrate (thin film transistor array substrate), and the color filter manufacturing process is a dye or a thin film on the upper second substrate on which the light shielding film is formed. The process of forming a color filter layer of RG B color using a pigment and forming a common electrode (ITO) (color filter substrate).

In addition, the cell process spreads and bonds a spacer so that a constant gap is maintained between the first substrate (thin film transistor array substrate) on which the thin film transistor process is completed and the second substrate (color filter substrate) on which the color filter process is completed. The process of manufacturing a cell of a liquid crystal display device by injecting the same, and finally, the module process is a process of manufacturing a module by manufacturing a circuit unit for signal processing and connecting the liquid crystal display panel and the signal processing circuit unit.

Here, each manufacturing process is performed in one factory, in general, the manufacturing process for the first substrate is made in the first floor of the plant, the manufacturing process for the second substrate is made in the second layer, 3 In the layer, bonding and liquid crystal injection processes to the first and second substrates are performed. In the fourth layer, the module process is performed.

Here, the manufacturing process of the first and second substrate may be made in the same layer.

Meanwhile, each of the first and second substrates manufactured in the first and second layers should be conveyed to the third and fourth layers for the cell process and the module process, which are the next process. Generally, a lifter system such as an elevator is used.

Here, since each said board | substrate is stored in the cassette which can accommodate a plurality of said each board | substrate, and is interlayer conveyed by the said lifter system, several board | substrates are conveyed interlayer at once.

Hereinafter, a conventional cassette lifter system will be described in detail with reference to the accompanying drawings.

1 is a schematic configuration diagram of a conventional cassette lifter system, FIG. 2 is a schematic configuration diagram of a drive control unit for lifting and lowering a cage of FIG. 1, and FIG. 3 is a schematic configuration diagram of a slider robot. to be.

In the conventional cassette lifter system, as shown in FIGS. 1 and 2, a port 11 on which a cassette 20 containing a plurality of substrates is accommodated is seated, and the cassette 20 is caged from the port 11. A cassette loading section composed of transfer robot 12 for delivery to 70; Receiving the cassette 20 from the transfer path 80 and the transfer door 80 is installed in the opening and closing the outer door 40 corresponding to each layer, the cassette along each of the floor along the mobile passage 80 The lifter part comprised of the cage 70 for conveying 20 is provided.

Here, the port 11 is composed of a body, and a plurality of protruding jaws (11a) are formed on each of the four edges of the upper surface of the body, the cassette 20 is seated.

Here, the projection jaw (11a) is to ensure the space between the body and the lower surface of the cassette 20.

In addition, the transfer robot 12 is composed of a body, a plurality of slides (12a) that can be expanded or folded in a step shape provided on the upper surface of the body, is provided on the top of the plurality of slides (12a) The cassette 20 is seated on the slide 12a.

Here, although not shown in the figure, a drive shaft for moving the slide 12a up and down or rotating left and right is further included in the center of the body of the transfer robot 12.

And, one side of the cage 70 is provided with an openable inner door 50, the inner door 50 is installed to face the outer door 40 of the mobile passage (80).

Here, as shown in FIG. 2, a rope 41 is connected to an upper portion of the cage 70, and the rope 41 is wound up or unwound by the drive motor 60, and the cage ( 70 is raised and lowered by the rotation of the rope 41 and the drive motor 60.

In addition, since the counterweight 85 having a weight similar to that of the cage 70 is suspended on the other side of the rope 41, the drive motor 60 more easily lifts and lowers the cage 70. To make it possible.

On the other hand, the outside of the moving passage 80 is provided with a first air purification filter 30 for blowing foreign matter inside the moving passage 80 to remove the foreign matter inside the moving passage (80). The upper side of the cage 70 receives the purified air from the first air purification filter 30 and blows it into the cage 70 to purify the air inside the cage 70. A purification filter 31 is provided.

Here, the first and second air purification filters 30 and 31 serve to prevent the substrate accommodated in the cassette 20 inside the cage 70 from being contaminated by foreign matter.

The cage 70 is provided with a slider robot 61 on which the cassette 20 is placed. The slider robot 61 includes a stage 61c on which the cassette 20 is seated, and A belt 61b for moving the stage 61c in the direction of the slide 12a of the transfer robot 12 or in a direction opposite to the slide 12a, and a drive motor 61a for driving the belt 61b. Consists of.

Here, although not shown in the drawing, the lower surface of the stage 61c and the belt 61b have a sawtooth shape that meshes with each other, so that the belt 61b is rotated by the driving motor 61a. The stage 61c engaged with the belt 61b moves in the direction of the slide 12a of the transfer robot 12 or in the opposite direction according to the rotational direction of the drive motor 61a.

Here, as shown in FIG. 3, the stage 61c of the slider robot 61 has a space 90 at a central portion thereof, and slides 12a of the transfer robot 12 into the space 90. Will be inserted.

Then, the transfer robot 12 moves the slide 12a upward and downward to lift the cassette 20 placed on the stage 61c or the cassette 20 placed on the slide 12a. Is placed on the stage 61c.

By this slider robot 61, the cassette 20 is more easily moved from the cage 70 to the transfer robot 12 or from the transfer robot 12 into the cage 70. Can be moved.

Hereinafter, an interlayer conveying method of the cassette 20 using the conventional cassette lifter system configured as described above will be described in detail.

Here, it is assumed that the building is divided into first and second floors, and the cassette 20 will be described as an example of the interlayer conveyance from the first floor to the second floor.

First, when the cassette 20 is seated in the port 11 by the AGV (Auto Guided Vehicle) (not shown) of the first layer, the transfer robot 12 is the cassette 20 seated in the port 11 Lift up and move to the lifter section.

Thereafter, the outer door 40 and the inner door 50 of the cage 70 of the moving passage 80 provided in the lifter are opened together to expose the inside of the cage 70 and the transfer robot 12 ) Pushes the cassette 20 placed on the slide 12a into the cage 70.

In this case, the cassette 20 is mounted on the stage 61c of the slider robot 61 provided in the cage 70.

Subsequently, the inner door 50 of the cage 70 on which the cassette 20 is loaded and the outer door 40 of the moving passage 80 are closed, and the cage 70 has a rope 41 and a driving motor. By 60, the second floor is moved up and down along the moving passage 80.

When the cage 70 reaches the second layer, the outer door 40 of the second layer of the moving passage 80 and the inner door 50 of the cage 70 are opened together, and the two The cassette 20 is seated in the port 11 of the second layer by the transfer robot 12 provided in the cassette loading part of the layer.

However, the conventional cassette lifter system has the following problems.

In the conventional cassette lifter system, the transfer of the interlayer cassette of the same building was possible, but it took a long time for the interlayer transfer from one building (the right building of the mobile passage of FIG. 1) to the other building (the left building of the mobile passage of FIG. 1). .

That is, in order to carry a cassette between floors from one building to another building using a conventional cassette lifter system, first, the cassette is horizontally transported from one building to another building, and then the cassettes are carried back to another floor using a cage. Because of this, there was a problem that takes a lot of transport time.

The present invention has been made to solve the above problems, a plurality of external doors for opening and closing each building and the mobile passage between the floor of each building and the mobile passage, and each external door of the same floor of each building The present invention provides a cassette lifter system and an interlayer cassette conveying method using the same, which are installed in a cage and provided with a plurality of inner doors for opening and closing the inside of the cage to reduce the cassette conveying time between buildings. .

Cassette lifter system according to the present invention for achieving the above object, in the cassette lifter system for transporting a cassette containing a plurality of substrates for the liquid crystal display device, each along the moving passage located between each building A cage for lifting up and down the floors of buildings, and carrying cassettes therein to convey the cassettes to each floor of each building; A plurality of external doors formed between each floor of each building and the moving passages to open and close each floor of each building and the moving passages; It is characterized in that it comprises a plurality of inner doors provided in the cage to correspond to each outer door of the same floor of each building, for opening and closing the inside of the cage.

Here, the inside of the cage is characterized in that the slider robot is further provided with the cassette.

The slider robot is characterized in that it comprises a stage on which the cassette is seated, and a drive unit provided in the lower portion of the stage for moving the stage from side to side.

One side is connected to the upper portion of the cage is characterized in that the rope is further provided for lifting and lowering the cage along the movement passage.

The other side of the rope is further provided with a counterweight corresponding to the weight of the cage, one side and the middle portion of the other side of the rope is characterized in that the drive motor for pulling up or pulling down the rope is further provided.

It characterized in that it further comprises a drive control unit for adjusting the drive motor so that each loading space of the cage stops in front of the outer door of each floor of the moving passage.

Each floor of each building is further provided with a port on which the cassette is seated and a transfer robot for loading the cassette from the port into the cage or unloading the cassette from the cage to the port. It is characterized by.

One side of the moving passage is further characterized in that the first air purification filter for purifying the air inside the moving passage.

The outer upper surface of the cage is further characterized in that the second air purification filter for receiving the purified air from the first air purification filter to the inside of the cage to purify the air inside the cage.

In addition, the interlayer conveying method of the cassette using the cassette lifter system according to the present invention configured as described above, the cage for lifting up and down the floors of each building along the moving passage located between each building; A plurality of external doors formed between the first to nth floors of the buildings and the moving passages to open and close the floors of the respective buildings and the moving passages; Interlayer cassette conveyance using a cassette lifter system provided in the cage so as to correspond to the first through nth outer doors of the same floor of each building, and including first through nth inner doors for opening and closing the inside of the cage. CLAIMS 1. A method comprising: moving the cage along a moving passage and placing the cage between first to nth exterior doors of the first floor of each building; Opening a first outer door of the first floor of the first building and the first outer door of the cage facing the first outer door, and loading a cassette into a loading space of the cage; Moving the cage along a moving passage and placing the cage between the first to nth exterior doors of the nth floor of each building; Opening a second outer door of the second floor of the second floor of the second building and a second outer door of the cage facing the second outer door, and unloading a cassette to the second floor of the second building from the loading space of the cage; Characterized in that it comprises a.

Hereinafter, a cassette lifter system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

4 is a schematic structural diagram of a cassette lifter system according to an embodiment of the present invention.

As shown in FIG. 4, the cassette lifter system according to the present invention lifts and lowers the floors of each building along the moving passage 180 located between the first and second buildings, and loads the cassette 120 therein. A cage 170 for conveying the cassette 120 to the first and second floors of each building; A plurality of first and second external doors 140a and 140b are formed between each floor of each building and the moving passage 180 to open and close each floor of the building and the moving passage 180. )Wow; It is provided in the cage 170 so as to correspond to the first and second outer doors 140a and 140b of the same floor of each building, and the first and second inner doors 150a to open and close the inside of the cage 170. 150b).

Here, the first inner door 150a of the cage 170 is installed to face the first outer door 140a of the same floor of each building, and the second inner door 150b of the cage 170 is each It is installed to face the second exterior door 140b on the same floor of the building.

In addition, ports 111 on which the cassettes 120 transferred from AGVs are seated on the first and second floors of the first building (the right building of the moving passage 180) and the second building (the left building of the moving passage 180). And a transfer robot 112 for loading the cassette 120 seated in the port 111 into the cage 170 or unloading the cassette 120 from the cage 170. .

Here, the port 111 is composed of a body and the projection jaw (111a) is formed on each of the four edges of the upper surface of the body to support the cassette 120, although not shown in the figure, the projection jaw A sensor for detecting the cassette 120 seated on the protruding jaw 111a is further installed at the center of the body surrounded by 111a.

The protruding jaw 111a is to secure a space between the body and the lower surface of the cassette 120.

In addition, the transfer robot 112 is composed of a body, a plurality of slides (112a) that can be expanded or folded in a step shape provided on the upper surface of the body, the top of the plurality of slides (112a) The cassette 120 is seated on the slide 112a.

Here, although not shown in the figure, a drive shaft for moving the slide 112a up and down or rotating left and right is further included in the center of the body of the transfer robot 112.

 Here, the rope 141 is connected to the upper portion of the cage 170, the rope 141 is wound or released by the drive motor of the drive control unit, the cage 170 is the rope 141 And it is raised and lowered by the rotation of the drive motor.

In addition, a counterweight having a weight similar to that of the cage 170 is suspended on the other side of the rope 141, so that the driving motor can lift and lower the cage 170 more easily.

Generally, the weight of the counterweight is about 80% of the weight of the cage 170.

On the other hand, the outside of the moving passage 180 is provided with a first air purification filter 130 for blowing foreign matter inside the moving passage 180 to remove the foreign matter inside the moving passage 180. The upper side of the cage 170 receives the purified air from the first air purification filter 130 and blows it into the cage 170 to purify the air inside the cage 170. The purification filter 131 is provided.

Here, the first and second air purification filters 130 and 131 serve to prevent the substrate accommodated in the cassette 120 inside the cage 170 from being contaminated by foreign matter.

The cage 170 is provided with a sensor for detecting the slide 112a of the cassette 120 and the transfer robot 112 and a slider robot 161 on which the cassette 120 is placed. The slider robot 161 may include a stage 161c on which the cassette 120 is seated, and the stage 161c in a direction of slide 112a of the transfer robot 112 or in a direction opposite to the slide 112a. The belt 161b for moving and the drive motor 161a for driving the belt 161b are comprised.

Here, although not shown in the drawing, the lower surface of the stage 161c and the belt 161b have a sawtooth shape that meshes with each other, such that the belt 161b is rotated by the driving motor 161a. The stage 161c engaged with the belt 161b moves in the direction of the slide 112a of the transfer robot 112 or in the opposite direction according to the rotational direction of the drive motor 161a.

Here, as described above, the stage 161c has a space in the center portion, and the slide 112a of the transfer robot 112 is inserted into the space.

The transfer robot 112 moves the slide 112a upward and downward to lift the cassette 120 placed on the stage 161c, or the cassette 120 placed on the slide 112a. Is mounted on the stage 161c.

By this slider robot 161, the cassette 120 is more easily from the cage 170 to the transfer robot 112, or from the transfer robot 112 to the interior of the cage 170. Can be moved.

The operation of the cassette lifter system configured as described above is controlled by a plurality of control units.

That is, the controller includes a host (HOST), which is an upper controller in which information about the type of the cassette 120 and a destination of the cassette 120 is input by a user, an STC, which is an intermediate controller that receives a control signal from the host, It consists of an LFC, AGVC, which is a sub-controller that receives control signals from the STC, and a PPC and LPLC that receives control signals from the LFC.

The STC is a control unit for controlling which cassette 120 should be loaded on the AGV from the stocker by transmitting a control signal to a stocker having a plurality of cassettes 120 stored therein, and the AGVC transmits a control signal to the AVG to transmit the AGV. Control unit for controlling the operation of, the PPC is a control unit for controlling the operation of the transfer robot 112 by transmitting a control signal to the transfer robot 112, the LPLC is the first, Opening / closing operations of the second outer doors 140a and 140b and the first and second inner doors 150a and 150b of the cage 170, and the J-signal are transmitted to the driving control unit to perform the interlayer movement of the cage 170. It is a control unit for controlling.

Therefore, when the user inputs the type of the cassette 120 desired to the host and the information on the movement path of the cassette 120, the respective components (AGV, stocker, cage 170, drive control unit, transfer robot). 112 may automatically execute a command input to the host through each of the controllers STC, AGVC, LFC, PPC, and LPLC.

Hereinafter, an interlayer cassette conveying method using a cassette lifter system according to an embodiment of the present invention will be described in detail.

5 and 6 are views for explaining an interlayer cassette conveying method using a cassette lifter system according to an embodiment of the present invention.

Here, with reference to FIG. 5, the method of conveying the cassette 120 from the 1st floor of a 1st building to the 2nd floor of a 2nd building is demonstrated.

First, a user inputs a type of cassette 120 and information about a movement path of the cassette 120 to a host.

Here, the type of the cassette 120 is to input the information of the cassette 120, the first substrate is accommodated, the movement path of the cassette 120, the first floor of the first building to the second floor of the second building It will be as follows.

Then, the host transmits a control signal to the AGVC through the STC, and the AGV moves to a stocker in which a plurality of cassettes 120 are stored by the control signal of the AGVC, and the cassette 120 input by the user to the host from the stocker. Select).

Thereafter, the AGV carries the cassette 120 and places it on the projection 111a of the port 111.

In this case, the sensor of the port 111 senses that the cassette 120 is placed on the protruding jaw 111a and transmits a feedback signal to the host.

Here, the host analyzes the feedback signal and checks whether the cassette 120 placed on the port 111 is the first cassette 120, and if there is no error, simultaneously transmits a control signal to the PPC and LPLC through the LFC. In case of abnormality, call the error signal to inform the user.

Then, when there is no abnormality in the cassette 120, the drive control unit adjusts the drive motor according to the control signal of the LPLC, by winding or unwinding the rope 141 connected to the cage 170, the cage 170 The cage 170 is moved so as to accurately stop between the first and second outer doors 140a and 140b of the first floor of each building.

Subsequently, the first inner door 150a of the cage 170 facing the first outer door 140a and the first outer door 140a of the first floor of the first building in response to the control signal of the LPLC. Is opened so that the inside (loading space) of the first cage 170 is exposed.

At the same time, the PPC, which receives the control signal from the host through the LPLC, transfers the control signal to the transfer robot 112, and the transfer robot 112 protrudes from the port 111 in response to the control signal. The slide 112a is pushed into the space between the 111a and the cassette 120 placed on the protruding jaw 111a, and the slide 112a is raised to lift the cassette 120.

Subsequently, the transfer robot 112 pushes the slide 112a on which the cassette 120 is placed into the loading space of the cage 170 by the control signal of the PPC.

At this time, the slider robot 161 provided in the loading space of the cage 170 moves the stage 161c in the direction of the slide 112a of the transfer robot 112.

That is, the drive motor 161a provided at the lower portion of the stage 161c rotates to the right by the control signal of the LPLC, which causes the stage 161c to meet in the slide 112a direction. As a result, the slide 112a of the transfer robot 112 is inserted into the lower space of the stage 161c so that the cassette 120 seated on the slide 112a is the stage 161c and the slide 112a. Will be placed in the overlapped part.

Subsequently, as the slide 112a inserted into the lower space of the stage 161c descends, the cassette 120 that has been seated on the slide 112a naturally rests on the edge of the stage 161c.

Next, the transfer robot 112 folds the slide 112a to separate the slide 112a from the loading space of the cage 170, and at the same time, the slider robot 161 moves the drive motor 161a. Rotate to the left to draw the stage 161c on which the cassette 120 is seated into the loading space of the cage 170.

Thereafter, the first inner door 150a of the cage 170 is closed, and the loading space of the cage 170 is closed.

Here, as described above, a sensor for sensing the slide 112a of the cassette 120 and the transfer robot 112 is attached to the inside of the cage 170, the sensor is the slider robot (161) The stage 161c completely enters the loading space of the cage 170, and detects that the slide 112a of the transfer robot 112 is separated from the loading space of the cage 170. To close the first inner door (150a).

In addition, the first outer door 140a of the first floor of the first building is also closed.

Subsequently, the driving control unit receiving the control signal of the LPLC drives the driving motor to move the cage 170 on which the cassette 120 is loaded to the second floor of each building along the moving passage 180. Let's do it.

At this time, the cage 170 is stopped between the first and second external doors 140a and 140b of the second floor of each building by the control signal of the LPLC.

Thereafter, the second outer door 140b and the second inner door 150b of the cage 170 are opened by the control signal of the LPLC, and the loading space of the cage 170 is exposed.

At this time, the transfer robot 112 waiting in front of the second outer door 140b of the second floor of the second building pushes the slide 112a into the loading space of the cage 170.

In addition, as described above, the stage 161c of the slider robot 161 seated in the loading space of the cage 170 is picked up toward the slide 112a of the transfer robot 112 and the stage ( The slide 112a is inserted into the lower space of 161c. As a result, the cassette 120 is positioned at an overlapping portion of the stage 161c and the slide 112a.

In this state, the transfer robot 112 raises the slide 112a to separate the cassette 120 seated on the stage 161c on the stage 161c and simultaneously release the cassette 120 on the slide 112a. ) Settled down.

Subsequently, the transfer robot 112 folds the slide 112a to separate the slide 112a from the loading space of the cage 170, and rotates 180 degrees between the protruding jaws 111a of the port 111. Position the slide 112a on which the cassette 120 is seated, and lower the slide 112a below the protruding jaw 111a so that the cassette 120 is placed on the protruding jaw 111a of the port 111. Settled on.

Then, the AGV located on the second floor of the second building loads the cassette 120 seated in the port 111 and moves to the equipment located in the next process step.

The method of carrying out the interlayer conveyance of the cassette 120 containing the 1st board | substrate from the 1st floor of a 1st building to the 2nd floor of a 2nd building so far was demonstrated.

Next, a method of interlayer conveying the cassette 120 containing the second substrate from the first floor of the second building to the second floor of the first building will be described in detail as follows.

Here, it will be described with reference to FIG.

First, a user inputs a type of cassette 120 and information about a movement path of the cassette 120 to a host.

Here, the type of the cassette 120 is to input the information of the cassette 120 accommodated in the second substrate, the movement path of the cassette 120 from the first floor of the second building to the second floor of the first building It will be as follows.

Then, the host transmits a control signal to the AGVC through the STC, and the AGV moves to a stocker in which a plurality of cassettes 120 are stored by the control signal of the AGVC, and the cassette 120 input by the user to the host from the stocker. Select).

Thereafter, the AGV carries the cassette 120 and places it on the protruding jaw 111a of the port 111.

In this case, the sensor of the port 111 senses that the cassette 120 is placed on the protruding jaw 111a and transmits a feedback signal to the host.

Here, the host analyzes the feedback signal to check whether the cassette 120 placed in the port 111 is correct (matched with the information input from the host), and the cassette 120 is correct. The control signal is transmitted to PPC and LPLC at the same time. If there is a problem, an error signal is called to inform the user.

Then, when there is no abnormality in the cassette 120, the drive control unit adjusts the drive motor according to the control signal of the LPLC, by winding or loosening the rope 141 connected to each cage 170, the cage 170 The cage 170 is moved to stop exactly between the first and second outer doors 140a and 140b of each building's first floor.

Subsequently, in response to the control signal of the LPLC, the second outer door 140b of the second building and the second inner door 150b of the cage 170 facing the second outer door 140b are opened. The loading space of the cage 170 is exposed.

At the same time, the PPC, which receives the control signal from the host through the LPLC, transfers the control signal to the transfer robot 112, and the transfer robot 112 protrudes from the port 111 in response to the control signal. The slide 112a is pushed into the space between the 111a and the cassette 120 placed on the protruding jaw 111a, and the slide 112a is raised to lift the cassette 120.

Subsequently, the transfer robot 112 pushes the slide 112a on which the cassette 120 is placed into the loading space of the cage 170 by the control signal of the PPC.

At this time, the slider robot 161 provided in the loading space of the cage 170 moves the stage 161c in the direction of the slide 112a of the transfer robot 112.

That is, the driving motor 161a provided at the bottom of the stage 161c rotates to the left by the control signal of the LPLC, which causes the stage 161c to meet in the slide 112a direction. As a result, the slide 112a of the transfer robot 112 is inserted into the lower space of the stage 161c so that the cassette 120 seated on the slide 112a is the stage 161c and the slide 112a. Will be placed in the overlapped part.

Subsequently, as the slide 112a inserted into the lower space of the stage 161c descends, the cassette 120 that has been seated on the slide 112a naturally rests on the edge of the stage 161c.

Next, the transfer robot 112 folds the slide 112a to separate the slide 112a from the loading space of the cage 170, and at the same time, the slider robot 161 moves the drive motor 161a. Rotate to the right to draw the stage 161c on which the cassette 120 is seated into the loading space of the cage 170.

Thereafter, while the second inner door 150b of the cage 170 is closed, the loading space of the cage 170 is closed, and the second outer door 140b is also closed.

Here, as described above, a sensor for sensing the slide 112a of the cassette 120 and the transfer robot 112 is attached to the inside of the cage 170, the sensor is the slider robot (161) The stage 161c completely enters the loading space of the cage 170, and detects that the slide 112a of the transfer robot 112 is separated from the loading space of the cage 170. To close the second inner door (150b).

Subsequently, the driving control unit receiving the control signal of the LPLC drives the driving motor to move the cage 170 on which the cassette 120 is loaded to the second layer along the movement passage 180.

At this time, the cage 170 is stopped between the first and second outer door 140b of the second layer of the movement passage 180 by the LPLC control signal.

Thereafter, the first outer door 140a of the second layer and the first inner door 150a of the cage 170 are opened by the control signal of the LPLC, and the loading space of the cage 170 is exposed.

At this time, the transfer robot 112 waiting in front of the first outer door 140a of the second floor of the first building pushes the slide 112a into the loading space of the cage 170.

In addition, as described above, the stage 161c of the slider robot 161 seated in the loading space of the cage 170 is picked up toward the slide 112a of the transfer robot 112 and the stage ( The slide 112a is inserted into the lower space of the 161c, which causes the cassette 120 to be positioned at an overlapping portion of the stage 161c and the slide 112a.

In this state, the transfer robot 112 raises the slide 112a to separate the cassette 120 seated on the stage 161c on the stage 161c and simultaneously release the cassette 120 on the slide 112a. ) Settled down.

Subsequently, the transfer robot 112 folds the slide 112a to separate the slide 112a from the loading space of the cage 170, and rotates 180 degrees between the protruding jaws 111a of the port 111. Position the slide 112a on which the cassette 120 is seated, and lower the slide 112a below the protruding jaw 111a so that the cassette 120 is placed on the protruding jaw 111a of the port 111. Settled on.

Then, the AGV located on the second floor of the first building loads the cassette 120 seated in the port 111 and moves to the equipment located in the next process step.

In the present invention, a method of interlayer conveying the cassette 120 from the first floor of the first building to the second floor of the second building and the method of interlayer conveying from the first floor of the second building to the second floor of the first building. As described above, it is also possible to carry the interlayer cassette 120 from the first floor of the first building to the second floor of the same building, or from the first floor of the second building to the second floor of the same building. Do.

As such, when the cassette 120 is interlayer transported using the cassette lifter system according to the present invention, the transport time of the cassette 120 is drastically reduced since not only the vertical floor transport but also the horizontal floor transport between other buildings is possible. Can be.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

The cassette lifter system and the interlayer cassette conveying method using the same according to the present invention described above have the following effects.

Cassette lifter system according to the present invention is provided with a plurality of external doors for opening and closing between each building and the moving passage located between the building, a plurality of inner doors moving along the moving passages and corresponding to the respective outer doors It is configured to include a cage installed, it is easy to convey the interlayer cassette from one building to another.

Therefore, the conveying time can be drastically reduced as compared with the conventional cassette conveying method consisting of the inter-building horizontal conveyance and the inter-layer vertical conveying.

1 is a schematic configuration diagram of a conventional cassette lifter system

FIG. 2 is a schematic configuration diagram of driving control for raising and lowering the cage of FIG.

3 is a schematic configuration diagram of a slider robot

4 is a schematic structural diagram of a cassette lifter system according to an embodiment of the present invention;

5 and 6 are views for explaining an interlayer cassette conveying method using a cassette lifter system according to an embodiment of the present invention.

* Explanation of symbols on the main parts of the drawings

111: Port 111a: Protruding Jaw

112: Lee Bok 112a: Slide

140a: first external door 140b: second external door

150a: first inner door 150b: second inner door

141: rope 180: moving passage

130: first air filter 131: second air filter

170: cage 120: cassette

161: slider robot 161a: drive motor

161b: Belt 161c: Stage

Claims (10)

A cassette lifter system for interlayer conveying a cassette in which a plurality of substrates for a liquid crystal display device are housed, A cage for lifting and lowering the floors of each building along a moving passage located between each building, and carrying a cassette therein to convey the cassette to each floor of each building; A plurality of external doors formed between each floor of each building and the moving passages to open and close each floor of each building and the moving passages; And a plurality of inner doors provided in the cage so as to correspond to the respective outer doors of the same floor of each building and configured to open and close the inside of the cage. The method of claim 1, The cassette lifter system, characterized in that the inside of the cage is further provided with a slider robot on which the cassette is placed. The method of claim 2, The slider robot is a cassette lifter system, characterized in that it comprises a stage on which the cassette is seated, and a drive motor provided in the lower portion of the stage for moving the stage from side to side. The method of claim 1, One side is connected to the upper portion of the cage is a cassette lifter system, characterized in that the rope is further provided for lifting and lowering the cage along the movement passage. The method of claim 4, wherein The other side of the rope is further provided with a counterweight corresponding to the weight of the cage, the middle portion of one side and the other side of the rope is characterized in that the cassette is further provided with a drive motor for pulling up or lifting the rope Lifter system. The method of claim 5, And a drive control unit for adjusting the drive motor so that each load space of the cage stops in front of the outer door of each floor of the moving passage. The method of claim 1, Each floor of each building is further provided with a port on which the cassette is seated and a transfer robot for loading the cassette from the port into the cage or unloading the cassette from the cage to the port. Cassette lifter system, characterized in that. The method of claim 1, One side of the movement passage is a cassette lifter system, characterized in that further provided with a first air purification filter for purifying the air inside the movement passage. The method of claim 1, A cassette lifter, characterized in that the outer upper surface of the cage is further provided with a second air purification filter for receiving the purified air from the first air purification filter to the inside of the cage to purify the air inside the cage. system. A cage for elevating the floors of each building along a moving passage located between each building; A plurality of external doors formed between the first to nth floors of the buildings and the moving passages to open and close the floors of the respective buildings and the moving passages; Interlayer cassette conveyance using a cassette lifter system provided in the cage so as to correspond to the first through nth outer doors of the same floor of each building, and including first through nth inner doors for opening and closing the inside of the cage. In the method, Moving the cage along a moving passage and placing the cage between the first to nth exterior doors of the first floor of each building; Opening a first outer door of the first floor of the first building and the first outer door of the cage facing the first outer door, and loading a cassette into a loading space of the cage; Moving the cage along a moving passage and placing the cage between the first to nth exterior doors of the nth floor of each building; Opening a second outer door of the second floor of the second floor of the second building and a second outer door of the cage facing the second outer door, and unloading a cassette to the second floor of the second building from the loading space of the cage; An interlayer conveying method of a cassette using a cassette lifter system, characterized in that comprises a.