KR20050027976A - Apparatus for transferring cassette of display device - Google Patents

Abstract

A cassette conveyance device for display articles is provided to safely convey a cassette while enabling multi-stage loading of a clean room of each story. A cassette conveyance device for display articles comprises clean rooms(10) formed to each story of a display article plant building; cassette-loading stands installed to the inside of the clean rooms to load cassettes; fixed roller conveyors(20) conveying loaded cassettes; fixed stoppers(81) installed to the lower part of the clean room door-side ends of the fixed roller conveyors; a hoist way(30) installed to one side or middle of the clean rooms; a lifter car(40) installed to the hoist way in a state capable of being lifted; a clean room door(50) and a lifter car door(60) opening and closing a clean room entrance(12) and a lifter car entrance(41); a roller conveyor-type conveying device(70) fixed in the lifter car; and a moving stopper(82) installed on the floor surface of the lifter car of the lower part of the conveying device. The moving stopper mounted with a stop actuator(83) is advanced toward the fixed stopper and then the stopper actuator is operated and a gap between the fixed stopper and the moving stopper is minimized. The cassette conveyance device has a unit for exactly maintaining horizon of a roller conveyor(71) in the lifter car and the fixed roller conveyor by preventing vertical movement of the lifter car followed by the movement of the cassette.

Description

Cassette transfer device for display products {APPARATUS FOR TRANSFERRING CASSETTE OF DISPLAY DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette conveyance transfer device for a display product, and more particularly, to a cassette conveyance transfer device for a display product, in which parts can be safely transferred and multi-layer stacking is possible for each floor.

Typically, display products such as Liquid Crystal Display (LCD) and Plasma Display Panel (PDP) products are manufactured in a clean room, and the clean room is installed on multiple floors of a factory building. Therefore, the display products are manufactured while conveying the parts or semi-assemblies constituting the display products to the clean rooms on each floor.

The parts or semi-assemblies are transported in a cassette, and a lift path is provided on one side of the clean rooms for transport between floors, and a lifter car is installed on the lift path so as to be liftable. Or in the clean room, the transfer device which moves a cassette between a lifter car and a clean room is installed. In addition, a clean room entrance is formed on the boundary wall of the clean room and the hoistway, and a lifter car entrance is formed on the clean room side wall of the lifter car, and these doors are opened and closed by the clean room door and the lifter door, respectively.

A process of transferring a cassette containing parts or semi-assemblies by a conventional apparatus to a clean room of each floor will be described.

When the lifter car is lifted and stopped at the desired clean room position, the clean room door is first opened, and the clean room is filled with clean air to maintain a constant pressure. Therefore, the clean air in the clean room passes through the boundary room and the lifter through the clean room entrance. As it flows out of the gap between the cars, it prevents the air on the lift side from entering the clean room. When the lifter car door is opened in this state, the clean air in the clean room flows into the lifter car and the air inside the lift road or the lifter car This prevents the internal air from entering the clean room. The hoistway here is typically of a lower grade than the clean room but maintains the conditions of the clean room to some extent.

When the doors are opened, the arms of the transfer machine installed in the lifter car or the clean room extend and enter the clean room or the lifter car through the entrances, and the cassette is transferred into the clean room or the lifter car.

When the cassette is transferred, the transfer arm contracts and returns to the inside of the clean room or the lifter car to complete the transfer of the cassette.

When the cassette is refilled, the lifter car door is first closed and then the cleanroom door is closed.

When the doors are closed, the lifter car moves up and down along the hoistway to stop at the clean room where the cassette is to be transferred. As described above, the clean room door is opened first, and then the lifter car door is opened, and the cassette arm on which the cassette is seated is extended. The cassette is transferred to the inside of the clean room or inside the lifter car, and then the lifter car door is repeatedly closed as described above, and then the clean room door is closed.

This transfers the cassette in any one clean room to the desired clean room.

However, in the conventional apparatus, since the above-mentioned cassette transfer machine is installed in each floor clean room and the cassette loading stand is installed in the lifter car, several expensive transfer machines are required, and as described above, the conventional transfer machine is installed in the lifter car. If you operate it, the arm of the carrier is composed of two arms in the form of cantilever, so the deflection of the carrier arm occurs according to the weight of the cassette.In addition, the guide rail installed on the hoistway to guide the lifter car And the whole of the lifter car is inclined toward the clean room due to the tolerance between the guide shoes installed in the lifter car and guided to the guide rail, and the sagging arm sag becomes larger. In addition to damage to parts as the parts move, the cassette There was a problem that caused the damage of the parts by sliding from the arm to fall to the floor of the clean room.

In particular, the liquid crystal display products are becoming very large in recent years, especially the liquid crystal display and PD products have been developed 100-inch super large size.

In the case of the ultra-large display products, for example, the cassette for storing the glass substrate used therein has a width (W) 2,500 mm x length (L) 3,000 mm x height (H) 2,000 mm and a weight of over 2,000 kg. Because of the heavy weight of the transfer machine, the self deflection of the transfer arm becomes more than 30 to 50 mm, and the deflection of the transfer machine due to the inclination of the lifter car becomes more than 60 mm, and as a result, the deflection of the transfer machine appears to be greater than 80 to 100 mm. The transfer of cassettes is a serious problem.

In addition, in the past, a single cassette stacker was installed in each clean room according to the extra large size of display products. However, since the utilization of the factory site is reduced when the single stack is loaded, two cassette stackers are installed in each floor clean room. In addition to increasing the utilization of clean rooms to allow two-stage stacking, factory layouts on each floor are becoming more complex, and entrances are not installed on only one side of the hoistway, but also on opposite sides of 180 °.

However, when two cassette stacking racks are installed in each clean room in order to enable multi-stage stacking, there is a possibility that the cassette falls due to the deflection of the above-described stacker during the transfer of the cassette to the cassette stacking rack on the upper side. In addition, expensive equipment for raising to multiple stages is required. In order to solve this problem, the present applicant filed a slide transfer method cassette conveying apparatus with a patent application number 10-2004-0054878 on July 14, 2004, but this also has a complicated structure and high cost. In addition, the patent application application number 1-1-2004-5184751-09 filed roller conveyor transfer equipment was applied, but this also has a complicated structure and somewhat expensive problem.

In addition to the above-mentioned transfer method, when conveying small conveyances between the different layers as described above, roller conveyors are generally installed on both the clean room side and the lifter side, but the present invention is applied as described above. Since the cassette is large and heavy, and must be applied even on a high floor of 50m or more, the wire rope can be moved while holding the lifter up and down by the weight difference between cassettes, with and without cassettes. Due to the difference in the elongation, there is a problem that the fixed roller conveyor in the clean room and the moving roller conveyor in the lifter car cannot be leveled correctly, and thus the cassette cannot be stably transported without impacting the glass substrate in the cassette.

It is therefore an object of the present invention to provide a cassette transfer device for a display product, which enables the cassette to be carried more safely.

Another object of the present invention is to provide a cassette transfer device for a display product, which is capable of multi-stacking the clean room of each floor, and enables the cassettes to be safely transferred while being stacked in multiple layers.

Still another object of the present invention is to provide a cassette transfer device for a display product, in which a cassette movement operation between a clean room and a lifter car can be performed quickly to shorten a cassette transfer time.

In order to achieve the object of the present invention, the clean room formed for each floor of the display product manufacturing factory building, the clean room entrance is formed, the cassette mounting table installed inside the clean room to load the cassette, and conveyed the loaded cassette A roller stopper and a fixed stopper installed at the lower end of the clean room door side of the roller conveyor, a hoistway installed on one side or the center of the cleanroom over the entire floor of the manufacturing plant, and the hoistway is installed on the hoistway to the entrance of the cleanroom. A lifter car having a corresponding lifter door, a cleanroom door and a lifter door for opening and closing the cleanroom entrance and the lifter door, a roller conveyor-type transfer device fixed to the lifter car, and a bottom of the lifter car Installed stopper that can move from side to side In the cassette conveying transfer device for display products comprising a, it is installed on the lower end of the clean room door side of the cassette conveying fixed roller conveyor in the clean room to support the variable load of the lifter to prevent the lifting of the lifter On the inside of the fixed stopper, the moving stopper with stop actuators operating up and down is moved up and down at both ends moving the inside of the lifter car forward and backward to the fixed stopper side, and then the stop actuator is operated to move the fixed stopper. Display means characterized in that it is provided with a means for accurately positioning the roller conveyor in the lifter car and the fixed roller conveyor by preventing the vertical movement of the lifter car according to the movement of the cassette by seating with a minimum gap of the stopper. A parts cassette conveyance transfer device is provided.

In addition, in order to achieve the object of the present invention, a clean room formed for each floor of a display product manufacturing factory building, and formed with a clean room entrance, a fixed roller conveyor installed inside the clean room for carrying and carrying a cassette, and a clean room of a roller conveyor. A lifter car having a fixed stopper installed under the door side end, a hoistway that is installed on one side of the cleanroom over the entire floor of a manufacturing plant building, and a hoistway that is liftably installed on the hoistway and corresponding to the doorway of the cleanroom; And a clean room door and a lifter door for opening and closing the clean room entrance and the lifter door, a roller conveyor transfer device installed in the lifter car, and a moving stopper for moving from side to side. In the conveyance transfer device, the fixing roll The conveyor is composed of left and right and one or two stages for each clean room, and the clean room entrance is formed of left and right and bottom clean room entrances and top clean room entrances corresponding to the left and right and one or two stage roller conveyors. The lower and the lower clean room doors and the upper clean room doors are installed at the lower clean room entrance and the upper clean room entrance, respectively, so that the fixed roller conveyor and the roller conveyor in the lifter can be horizontally aligned. An apparatus is provided.

Hereinafter, the cassette conveyance transfer device for display products according to the present invention will be described in detail according to the embodiment shown in the accompanying drawings.

<Example>

1 to 3 show an embodiment of a cassette conveying apparatus for a display product according to the present invention, Figures 1 and 2 are a longitudinal sectional view and a cross-sectional view of the cassette conveying apparatus for a display product according to the present invention, Figure 3 Figure showing a cassette transfer process according to the invention.

As shown in FIGS. 1 and 2, the component cassette conveying apparatus for display products according to the present embodiment includes a clean room 10 formed for each floor of a display product manufacturing factory building, and the inside of the clean room 10. A fixed roller conveyor a (20) provided to load and convey the cassette (C), a fixed stopper (81) provided at the lower end of the clean room door (50) side of the fixed roller conveyor (a), and the clean room (10). The hoistway 30 installed on all sides of the manufacturing plant building on one side of the lifter, the lifter car 40 installed on the hoistway 30 so as to be lifted, and the roller conveyor in the lifter car 40 installed on the lifter 40. At the top and bottom of the b (71) and both ends, there is provided a cassette (c) conveying transfer device (70) consisting of a moving stopper (82) capable of moving forward and backward with a stop actuator (83) operating up and down, Fixed roller conveyor a installed in the clean room 10 20 and the horizontal alignment means of the roller conveyor b 71 in the lifter car.

The clean room 10 is typically in a state in which clean air is continuously introduced to maintain a constant pressure, and the inside of the lifter car 40 is configured as a semi-clean room.

The clean room entrance 12 is formed in the boundary wall 11 between the clean room 10 and the hoistway 30, and the lifter car entrance 41 is formed on the side of the clean room 10 of the lifter 40. The clean room door 12 and the lifter car door 41 are provided with a clean room door 50 and a lifter car door 60, respectively.

The clean room door 50 and the lifter car door 60 are installed to open and close in an up and down direction, such as a general elevator including an air cylinder or a winding motor and a rope wound around the air cylinder or the winding motor. Since it is opened and closed by the vertical opening and closing door driving means employed in the prior art, a detailed description thereof will be omitted.

The roller conveyor a 20 in the clean room 10 includes a motor 25 for driving a plurality of identical rollers 23 between the rollers and the driving unit by a chain or a belt, and includes frames 22a and 22b. It is installed on the conveyor base 21 in a pair of left and right in a state separated from each other by a predetermined distance, it is configured to be fixed by the conveyor support 24 on the bottom surface or the second stage support of the clean room (10). Here, the driving method and the like of the roller conveyor is a method adopted in the conventional prior art, so a detailed description thereof will be omitted.

The hoistway 30 is provided with means for elevating and driving the lifter car 40.

Means for elevating and driving the lifter car 40 are the same as in the normal elevator, the machine room 31 at the top of the hoistway 30, the balance weight hoistway 32 formed on one side of the hoistway 30, and the The hoisting machine 33 installed in the machine room 31, the counterweight 34 installed so as to be elevated on the counterweight hoistway 32, and the hoisting machine 33 are wound around the lower end of the lifter car 40. Fixed hoisting rope (R1), the balance rope (R2) connecting the upper end of the lifter car 40 and the upper end of the balance weight 34, and the lower end of the lifter car 40 and the lower end of the balance weight 34 It is connected to the compensating chain.

Guide rails 35 are installed at both side walls of the hoistway 30, and guide shoes 36 guided to the guide rails 35 are provided at both side surfaces of the lifter car 40. Is installed. In addition, a guide rail 37 is installed on the counterweight hoistway 32, and a guide shoe 38 guided to the guide rail 37 is installed on the counterweight 34.

The conveyance transfer device 70 is moved forward and backward with the guide rails 72a and 72b forward and backward on the roller conveyor b 71 and the lifter car 40 in the lifter car having the same structure as the fixed roller conveyor a 20. The movement guide piece 73a, 73b, 73c, 73d and the forward and backward movement actuator 77 are fixedly installed, and the movable stopper base 79 fixed on the forward and backward movement guide pieces 73 and the forward and backward movement actuator 77 is fixed. At both ends of the), stop actuators 83a, 83b, 83c, and 83d operating up and down are fixed to the upper and lower portions, and a moving stopper 82 is fixed to the underside of the lifter 40.

The forward and backward movement guide rails 72a and 72b use a conventional linear motion guide rail, and the forward and backward movement guide piece 73 uses a linear motion guide block.

As the forward and backward movement actuator 77 and the stop actuator 83, a pneumatic cylinder, a hydraulic cylinder, or a motor and a ball screw may be used, which is an example of a general linear actuator, and thus a detailed description thereof will be omitted.

Hereinafter, the transfer process of the cassette by the component cassette transfer device for display products according to the present embodiment will be described.

As shown in FIG. 3A, the lifter 40 stops at the correct position of the clean room door 50, and the cassette C is stopped at the upper portion of the fixed roller conveyor a 20 of the clean room 10. When the cassette C is transferred to another clean room 10 while the 50 and the lifter door 60 are closed, the clean room door 50 is opened as shown in FIG. 3B. 10) The clean air inside is discharged to the hoistway 30 through the clean room entrance 12 so that the air of the hoistway 30 does not flow into the interior of the cleanroom 10. At this time, the stopping degree of the lifter 40 is within ± 0.5mm, which is a level at which two roller conveyors a, b (20, 71) can be leveled and the cassette C can be conveyed smoothly.

In this state, when the lifter car door 60 is opened as shown in FIG. 3C, clean air inside the clean room 10 flows out to the lifter car 40 and the hoistway 30 through the clean room entrance 12, and lifts the lifter. The air on the side of the car 40 and the hoistway 30 does not flow into the interior of the clean room 10, and the interior of the lifter car 40 is also maintained in a condition equivalent to the clean room 10.

In this state, as shown in FIG. 3D, the moving stopper 82 of the transfer material device 70 is moved to the forward and backward movement actuator 77, the forward and backward movement guide rails, and the guide pieces 72 and 73. It stops moving to the inside of the fixed stopper 81 of the lower part of the fixed roller conveyor a in a clean room by this.

In this state, as shown in FIG. 3E, the stop actuators 83a, 83b, 83c, and 83d of the moving stopper 82 are operated gradually so that the gap between the inside of the fixed stopper 81 and the upper and lower ends of the stop actuator 83 ( t) Minimizes and prevents the lifter car 40 from moving up and down in accordance with the movement of the load of the cassette c, thereby maintaining the horizontality of the fixed roller conveyor 20 and the roller conveyor 71 in the lifter car. Be sure to

At this time, the clearance T between the inner side of the fixed stopper 81 and the upper and lower ends of the stop actuator 83 may not cause interference during the forward and backward movement of the movable stopper 82, so that T = 5 to 5 before the stop actuator 83 is operated. After the stop actuator 83 is operated, the inner dimension of the fixed stopper 81 and the amount of movement of the stop actuator 83 are maintained to be within t = 0 to 0.5 mm after the stop actuator 83 is operated. Determine.

In this state, as shown in 3f, the fixed roller conveyor a (20) and the roller conveyor b (71) in the lifter are simultaneously operated to move the cassette (c) to the upper position of the roller conveyor (71) in the lifter. The cassette c is moved as shown in FIG. 3G.

At this time, since the weight of the cassette c is also moved toward the lifter car 40 as the movement progresses, the length is increased in proportion to the lower weight of the wire rope holding the lifter car 40 in the vertical direction. The inner lower portion of the 81 and the distal end of the lower stop actuator 83 of the movable stopper 82 come into contact with each other to receive the load of the cassette c, and excessive contact may occur, such that wear or the like may occur. 4 and 5, the front end of the stop actuator 83 can be solved by using a hemispherical shape.

In this state, as shown in FIG. 3H, the stop actuator 83 of the movable stopper 82 is returned to its original position, and the upper and lower inner sides of the fixed stopper 81 and the both ends of the stop actuator 83 of the movable stopper 82 The gap (t) is widened so that the gap becomes T, so that even if the lifter car 40 moves a little by the load of the cassette (c), there is no interference problem for the moving stopper 82 to move backward to the original position. At this time, the operation speed of the stop actuator 83 is gradually returned to its original position, so that the lifter 40 moves without impact.

In this state, as shown in FIG. 3I, the movement stopper 82 returns to the home position in the lifter 40, and the lifter car door 60 and the clean room door 50 are closed.

After the transfer of the cassette c in the clean room 10 into the lifter car 40 is completed through this process, the lifter car 40 is moved to another layer or the other end, and then the transfer is carried out in the reverse order described above. Alternatively, the transfer of the cassette (c) into the other floor clean room 10 may be completed.

6 and 7 show another embodiment of the cassette conveyance transfer device for a display product according to the present invention, wherein the roller conveyor b 71 in the lifter is fixed to the upper portion of the movable stopper 82 in the present invention. And the roller stopper b 71 in the lifter car move together to bring the distance between the rollers 23 of the two roller conveyors 20 and 71 into contact with each other so that the cassette c It is to make the transfer material more smoothly.

Since the transfer process of the cassette in the present embodiment is the same as the above-described process, description of the process is omitted.

.

1 to 3 show an embodiment of a component cassette conveyance transfer device for a display product according to the present invention,

1 is a longitudinal cross-sectional view,

2 is a cross-sectional view,

Figure 3 shows the transfer process of the cassette according to the present invention,

3A is a longitudinal sectional view showing a state in which the lifter is stopped at the correct position of the clean room door and the cassette is loaded on the fixed roller conveyor in the clean room.

Figure 3b is a longitudinal cross-sectional view showing a clean room door is opened,

3c is a longitudinal sectional view showing the lifter car door is opened after the clean room door is opened,

FIG. 3D is a longitudinal sectional view showing the moving stopper in the lifter moving forward to the fixed stopper under the fixed roller conveyor in the clean room; FIG.

Figure 3e is a longitudinal cross-sectional view showing a state in which the stop actuator of the moving stopper in the lifter car is operated to minimize the gap with the fixed stopper;

3F is a longitudinal sectional view showing a state in which two roller conveyors are driven to convey the cassette into the lifter car;

Figure 3g is a longitudinal cross-sectional view showing a state in which the cassette is transferred to the roller conveyor in the lifter car,

3H is a longitudinal sectional view showing a state in which the stop actuator returns to its position in the state where the roller conveyor in the lifter carries the cassette to maintain the gap with the fixed stopper to the maximum;

FIG. 3I is a longitudinal sectional view showing a state in which a moving stopper in the lifter is returned backward and the lifter car door is in contact with the cleanroom door; FIG.

4 is a detailed longitudinal cross-sectional view of portion A of FIGS. 3D and 3H.

Figure 5 is a detail longitudinal cross-sectional view of the portion A '3e, 3f, 3g

6 is a longitudinal sectional view showing a state in which a roller conveyor in a lifter car is fixed to an upper portion of a moving stopper;

FIG. 7 is a longitudinal cross-sectional view illustrating a state in which the moving stopper of FIG. 6 is advanced to the fixed stopper; FIG.

** Description of symbols for the main parts of the drawing **

10: clean room 20: fixed roller conveyor a

21: conveyor base 22: frame (22a, 22b)

23: roller 24: support

25: motor 26: chain

30: hoistway 40: lifter car

50: clean room door 60: lifter car door

70: conveying transfer device 71: roller conveyor b in the lifter car

72: guide rail for forward and backward movement (72a, 72b)

73: guide pieces for forward and backward movement (73a, 73b, 73c, 73d)

74: base plate

77: actuator for forward and backward movement 79: moving stopper base

81: fixed stoppers 81a and 81b 82: moving stopper

83: stop actuators (83a, 83b, 83c, 83d)

Claims (3)

The display room is formed on each floor of the building of the display manufacturing plant and has a clean room entrance, a cassette rack installed inside the clean room to load cassettes, a roller conveyor to convey the loaded cassettes, and a clean room door of a roller conveyor. A lifter having a fixed stopper installed under the side end, a hoistway installed on one side or the center of the cleanroom over the entire floor of the manufacturing plant building, and a hoist car door that is installed on the hoistway so that the hoistway can be lifted. Kawa, a clean room door and a lifter door for opening and closing the clean room entrance and the lifter door, a roller conveyor transfer device fixedly installed in the lifter car, and a movable device installed on the bottom surface of the lower lifter car to move left and right Parts for display products, including stoppers In the cassette conveyance transfer device, the lifter is installed at the lower end of the clean room door side of the cassette conveying roller conveyor in the clean room and is supported by the variable load of the lifter to prevent the lifting of the lifter. Moving stopper with stop actuator operating up and down is moved up and down on both ends of the car moving forward and backward, and then the stop actuator is operated.The gap between the fixed stopper and the moving stopper is minimized. And a means for preventing the vertical movement of the lifter car according to the movement of the cassette so as to accurately maintain the level of the fixed roller conveyor and the roller conveyor in the lifter car. A clean room formed at each floor of a display product manufacturing plant building and having a clean room entrance, a fixed roller conveyor installed inside the clean room for carrying and carrying a cassette, and a fixed stopper installed at the lower end of the clean room door side of the roller conveyor; A lifter provided on one side of the clean room over the entire floor of a manufacturing plant building, a lifter car installed on the hoistway to be liftable and having a lifter car door corresponding to the cleanroom doorway, and opening and closing the cleanroom doorway and the lifter door In the cassette conveying transfer device for a display product comprising a clean room door and a lifter door, a roller conveyor transfer device fixed to the lifter car, and a moving stopper to move from side to side the transfer device, the fixed roller Conveyor left and right by each clean room It is composed of one or two stages, the clean room entrance is formed of the left and right and the lower clean room entrance and the upper clean room entrance corresponding to the left and right and the first or second stage roller conveyor, and the left and right clean room entrance and the upper clean room entrance The left and right cleanroom doors and the upper cleanroom doors are respectively provided, and the rollers and the transfer device for the display product are characterized in that they are provided with a horizontal alignment means of the fixed roller conveyor and the roller conveyor in the lifter car. The roller conveyor in the lifter car is fixedly mounted on the upper part of the moving stopper in the lifter car, and the moving stopper and the roller conveyor in the lifter car move together to meet the rollers of the two roller conveyors. Component cassette conveyance and transfer device for display products, which is configured to make the transfer of cassettes more smoothly by making the distance between them close