KR100880170B1 - Station unit for a plate transfer system - Google Patents

Abstract

A contactless station of the apparatus for transferring the flat board is provided that the flat board can be stopped without an impact in the determined location. A contactless station of the apparatus for transferring the flat board comprises a guide plate(210) which is installed in order to ascend and can descend on the top of the transfer line, a duct(230) which is installed on the top of the guide play, and in which the discharge hole(232) is punched towards the guide plate, an elevating means(220) which at the same time, move duct and guide plate or the guide plate moves, a sensor which outputs the predetermined signal in case the flat board reaches to the stop position, a controller stopping the flat board without impact.

Description

Non-contact station of flat plate transfer device {Station unit for a plate transfer system}

The present invention relates to a conveying apparatus for conveying a flat plate, which is a conveyed body, and more particularly, a discharge unit for discharging jets in a direction opposite to a flat traveling direction of a conveying line so that the flat plate stops at a predetermined position in the flat conveying device. The present invention relates to a non-contact station of a flat plate feeder which is installed to move up and down on a line so that it can be stopped at an accurate position without interfering with the feed.

As a conveying device for conveying the object to be transferred to a desired position, there is generally a conveyor belt or a plurality of conveying rollers installed to be connected with a driving motor to receive rotational force.

However, all of these transfer devices are transported in contact with one side of the to-be-transmitted body, so not only foreign matters or scratches are caused on the contact portion, but also the support load is concentrated on the contact portion, which causes damage to the contact portion. There was a problem that the transfer of pressure-sensitive precision products is not suitable.

In order to solve such a problem, a research on a floatation conveying device for supporting and conveying a conveyed object through air pressure or electrostatic force has been actively conducted. As an example, FIG. It demonstrates with reference.

1 is a perspective view showing a conventional air-formed conveying apparatus, a pair of support rails 10 are installed so that both sides of the plate P are placed, and the lower portion of the plate P on one side of the support rail 10. A plurality of air nozzles 20 are installed to discharge air to the air, and the air nozzles 20 are disposed to be inclined toward the traveling direction of the flat plate P through the air having the directivity discharged from the air nozzles 20. While the flat plate (P) is to be transferred to one side, the suction rail 30 is inclined in the opposite direction to the air nozzle 20 at the end of the support rail 10 by adsorbing the transferred flat plate (P) It is configured to stop.

Such an air floating conveying device has no advantages due to non-contact conveying as compared to the conveying device through the conveyor belt or the conveying roller, and thus does not require a motor, a gear, a belt, a conveying roller, etc. Due to various advantages such as no impact and no generation of dust or foreign substances due to contact between components, sensitive flat plates (P), which are weak to impact and must be kept clean, that is, LCD, PDP, OLED, etc. It is most applied in the field of conveying the glass substrate used.

As a technology for stopping the plate at a predetermined position during the transfer in the plate transfer device such as the Republic of Korea Patent No. 10-0469906 (substrate injuries and transfer device) air is transported to enable the stop of the substrate in the transfer line of the flotation device Formed pores discharged in a direction different from the other direction has been disclosed, but the pores for discharging the air for transport and the pores for stopping are perforated together to limit the installation position and the number of installation of the pores There is a problem that can not be discharged precise stop air.

An object of the present invention for solving the above problems is to allow the plate to stop stably at a predetermined position in the plate transfer device, the discharge unit for discharging the jet in the direction opposite to the plate traveling direction of the transfer line on the transfer line It is installed to move up and down so that it can be stopped at the correct position without interfering with the transfer, and the guide plate is installed at the discharge part so that the jet can be applied to the plate through the guide plate so that the plate can be stably stopped at the stop point. It is to provide a non-contact station of the plate feeder.

A feature of the present invention for achieving the above object is a flat plate conveying apparatus for conveying the flat plate by air pressure or electrostatic force, the inclination angle and the bottom or top surface of the flat plate to be conveyed to the upper portion of the transfer line to stop the flat plate And a guide plate installed to be able to move up and down to a width corresponding to the width of the transfer line, and connected to jet generating means such as a compressor and a pump, which are installed on the guide play and generate a jet, and discharge holes are directed toward the guide plate. Lifting means comprising a perforated duct, a guide and a drive means for simultaneously lifting and lowering the duct and the guide plate, or only the guide plate, and is installed at the stop position of the transfer line and the plate The sensor outputs a predetermined signal when the stop position is reached. A key input unit for selecting a working mode, and when the flat plate is positioned at a position to stop according to the signals output from the key input unit and the sensor, the jet generating means and the lifting means are driven to drive the jet through the guide plate. It is composed of a control unit that acts on the plate to stop the plate without impact.

The front and rear of the sensor is further provided with an acceleration / reduction gear for controlling the moving speed of the plate, and the guide plate is further provided with a suction hole for suctioning the outside air in the direction of the plate to increase the flow rate of the jet. Ensure jet flow is smooth.

In addition, the jet uses air, liquid, and the like, and the discharge hole is slotted, or is formed in the shape of a hole such as a circle, an ellipse, and a polygon, along the width of the transfer line.

In addition, there is further provided a means for applying a bias force to balance the force by increasing the pulling force of the pushing force and the pulling force generated by the jet, for example, a predetermined location of the transfer line corresponding to the position opposite the discharge hole Narrow the size of the space where the end of the plate is located by discharging the coanda jet toward the plate, providing the jet inclined or horizontally from the bottom to the top of the plate, or adjusting the degree of elevation of the guide plate. One of the methods can be used alternatively.

According to the present invention configured as described above by discharging the jet in the direction opposite to the conveying direction of the flat plate it is possible to stop the flat plate at a desired position.

In addition, since the plate can be stopped at a predetermined position without impact by the jet acting on the plate through the guide plate, there is an effect that the damage of the product does not occur.

An embodiment of the present invention will be described in more detail with reference to the accompanying drawings. In the embodiment of the present invention, the jet uses air, and the jet generating means uses a compressor.

2a to 2b is a side view showing a non-contact station of the air-floating flatbed conveying apparatus according to an embodiment of the present invention, the non-contact station of the air-floating flatbed conveying apparatus according to the present invention has a plurality of discharge holes (111) The conveying direction of the conveying line 110 while inclining the guide plate 210 on the lower surface or the upper surface of the plate (P) to be transferred on the upper conveying direction of the conveying line 110 is arranged to have a conveying bar (not shown) It is installed to be spaced apart from the end, the upper portion of the guide plate 210 is connected to the compressor 220 to discharge the compressed air jet toward the guide plate 210 and the discharge hole 232 toward the transfer line 110 The perforated duct 230 is installed along the width of the transfer line 110, and the guide plate 210 and the duct 230 are integrally installed through the connection frame 240.

As described above, the discharge part consisting of the duct 230, the connection frame 240 and the guide plate 210 is raised and lowered at the same slope as the inclined surface of the guide plate 210 by the elevating means 260. A guide means such as an LM guide or a rail is installed on the side of the plate 210 or the duct 230, and the duct 230 and the guide plate 210 are driven by driving the guide means by a driving means such as a motor or a cylinder. Raise and lower the discharge section.

In the case of using the rail as the guide means in the above configuration, the slide block 262a is integrally installed in the duct 230 or the guide plate 210 constituting the discharge part, and the slide block 262a is described above. Is engaged with the slide rail 262b installed at the same inclination as the guide plate 210 integrally with the frame 114 installed at the end side of the transfer line 110, and the slide block 262a is a cylinder 264a which is a driving means. It is connected to the end of the rod (264b) of the ()) to move up and down along the slide rail (262b) in accordance with the operation of the cylinder (264a).

In addition, an acceleration / decelerator (not shown) for controlling the entry speed of the flat plate P is provided at the front or rear of the stop position of the transfer line 110, and is provided at the upper or side portion of the transfer line 110. A sensor S for detecting the entry of the plate P and outputting a signal corresponding thereto is installed to confirm that the plate P has reached a stop position, and is connected to the sensor S to drive the compressor and the compressor. A control unit (not shown) for controlling the operation of the 220 is installed to be electrically connected to the sensor S, and the user can select various operation modes such as selecting whether to stop or controlling the discharge jet force. A key input unit (not shown) is further provided.

On the other hand, in the above-described configuration, the lower side of the transfer line 110 is formed to be inclined at the same inclination as the guide plate 210 to have a predetermined interval with the guide plate 210.

In addition, the discharge hole 232 is formed by selecting one of a slot type, circular, oval or polygon, the discharge hole 232 is formed along the end of the transfer line (110).

The discharge hole 232 is drilled vertically with respect to the ground or drilled in a horizontal direction with the guide plate 210 as shown in FIG. 2B so that the flow of the jet may be changed while the jet strikes the guide plate 210. In all of these embodiments, the jets may flow along the inclined plate 210.

In addition, as shown in Figure 2a and 3 to the connecting frame 240 for connecting the duct 230 and the guide plate 210, the suction to suck the air opposite the plate (P) of the connecting frame 240 in the flat direction The holes 242 and 242b may be further drilled to increase the flow rate of the jet to facilitate the flow.

4 is a diagram illustrating a non-contact station according to another embodiment of the present invention.

In the non-contact station according to another embodiment of the present invention, unlike the above-described FIGS. 2A and 2B, the duct 230 and the connection frame 240 are kept in a fixed state, and only the guide plate 210 is moved up and down. In order to separate the guide plate 210 and the connecting frame 240 to have a predetermined interval, the lifting means is installed only connected to the guide plate 210.

In the above-described embodiments, the flow rate and pressure of the jet discharged from the duct 230 may be changed, or the opening and closing means may be installed in the discharge hole to adjust the cross-sectional area, or the discharge hole may be further installed, and the opening and closing means may be installed in the discharge hole. Thus, by adjusting the jet strength after entering the plate P into the stop position and the jet strength after entering, the plate P is prevented from colliding with the guide plate 210 and the energy consumption is reduced.

In the above-described embodiment, the opening and closing means are installed in the discharge hole, as shown in FIG. 5, in which the blocking plate 310 is installed at the position corresponding to the discharge hole 232 to the discharge hole 232. The opening 320 is installed inside the duct 230, and the support 320 is moved by using a driving means 330 composed of a motor, a rack or a pinion, or a cylinder. In addition, since those skilled in the art can adjust the cross-sectional area of the discharge hole in various ways, description of other embodiments will be omitted.

In addition, the configuration in which the outlet hole is further installed in the duct 230 and the opening and closing means is installed in the outlet hole, the opening and closing means may be installed in the same manner as the means for adjusting the cross-sectional area of the outlet hole, the duct 230 By installing a separate jet generation nozzle to the outside of the can also open and close the nozzle by the opening and closing valve which is the opening and closing means, the illustration thereof is omitted.

In addition, a method of providing a bias force in order to balance the force by making the pulling force stronger among the pushing force and the pulling force generated by the jet, so that the plate P can be stably stopped at the station. Although not shown to narrow the interval D of the portion into which the flat plate P is inserted, as shown by the arrow shown in FIG. 6A, in addition to a method of driving air in and out of the top of the flat plate P in the jet direction by driving the lifting / lowering means, FIG. As shown in FIG. 6B, a coanda jet generating means 410 is provided on the opposite side of the station 200 of the transfer line 110, that is, on the opposite side of the flat plate P conveying direction, to discharge the coanda jet toward the flat plate, or in FIG. 6B. As shown, the jet generating means 420 comprised of a compressor, a nozzle, etc. on the opposite side to the conveyance direction of the flat plate P is shown, and a jet is shown with the dotted line with respect to the flat plate P. As described above, it is alternatively used from a method of providing horizontally as shown by the inclined line from the bottom to the solid line.

Coanda jet generating means 410 in the above configuration is shown in the Korean Patent Application No. 10-2006-0041905 filed by the inventor of the present application.

Meanwhile, the operation of the discharge unit in the non-contact station will be described with reference to FIGS. 7 to 9.

The flat plate has a characteristic of maintaining a constant distance from the plane installed in connection with the jet direction of the jet discharged through the discharge hole. Thus, when the jet is ejected schematically shows the relationship between the position of the plate and the force by the jet acting on the plate as shown in FIG.

In FIG. 7, when the position in the h direction is at the equilibrium point E, the pushing force and the pulling force are balanced to balance the force applied to the flat plate. However, it can be seen that when the plate moves at the equilibrium point E in the opposite direction of the ejection direction of the jet, that is, in the -h direction, the pushing force acts in the + h direction. do. That is, the force acts to get to the equilibrium position. If it moves further in the ejection direction of the jet (+ h) at the equilibrium point (E), it can be seen that the pulling force, or force in the -h direction, acts as the distance increased in the + h direction. At the point A, the pulling force decreases.

If it continues to move from the equilibrium state to the + h direction and reaches the point B in the figure, the direction of the force acting on the plate is changed so that the force returning to the equilibrium point is lost and the force away from the equilibrium point, that is, the pushing force acts. In other words, the force pushing the plate from the origin to the point E, the force pulling the plate from the point B to the point B, and the force pushing the plate away from the point B acts.

When the guide shape of the plate and the flow conditions are changed, the force acting accordingly shows the tendency as shown in FIG.

In FIG. 8, compared to FIG. 7, only the pushing section and the pulling section may be present and there may be no pushing section. This means that when the plate is out of the jet zone, no force can be applied to the plate.

Since the force acting on the plate is relatively large, the force pushing on the plate is weak, but the pulling force is weak. Therefore, in order to solve this problem, a method of pushing the plate in the opposite direction of the jet can be considered. In other words, one of the various methods described above may be selected to apply a bias force. This power can be in several ways. This power need not be great in view of the esteemed reputation.

As shown in FIG. 9, subtracting the bias force from the graph before applying the bias force, the force versus distance becomes a graph of C-D.

As can be seen in FIG. 9, since the equilibrium point is moved from E to C, and the maximum restoring force is also moved from A to D, a force to return to the equilibrium point C occurs at any time. In other words, at a distance closer to point C, the plate receives the pushing force, and at a longer distance it receives the pulling force.

Therefore, according to the present invention, since the discharged jet acts on the flat plate along the guide plate, the flat plate is accurately positioned at the center of the transfer line, thereby preventing the breakage of the flat plate and conveying it in the correct direction.

1 is a view showing a conventional air buoyancy conveying apparatus

Figure 2a and Figure 2b is a side view showing a flat non-contact station of the air buoyancy conveying apparatus according to an embodiment of the present invention

3 is a view showing an embodiment of a suction hole according to the present invention

Figure 4 is a side view showing a flat non-contact station of the air buoyancy conveying apparatus according to another embodiment of the present invention

4A and 4B are side views illustrating suction holes

5 is a view showing an example of installation of the discharge hole and the opening and closing means;

6A and 6B illustrate an embodiment for providing a bias force.

7 to 9 are graphs showing the action of the jet according to the invention.

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

P: Plate 110: Transfer Line

210: guide plate 220: compressor

230: duct 232: discharge hole

242, 242b: suction hole 262a: slide block

262b: slide rail 264a: cylinder

264b: load

Claims (5)

In the non-contact station for stopping the plate in a specified position in the plate feeder, A guide plate installed at an upper portion of the transfer line to stop the plate and having an inclination angle with the bottom or top surface of the plate to be conveyed, and capable of descending to a width corresponding to the width of the transfer line; A duct installed in the upper part of the guide play and connected to jet generating means such as a compressor or a pump for generating a jet, and having a discharge hole perforated toward the guide plate; Lifting means comprising a guide means for driving the lifting and lowering the duct and the guide plate at the same time or only the guide plate and the driving means, A sensor installed at the stop position of the transfer line and outputting a predetermined signal when the plate reaches the stop position; A key input unit for allowing a user to select various operation modes of the feeder, When the plate is positioned at a position to stop the plate according to the signal output from the key input unit and the sensor, the jet generating means and the raising and lowering means are driven so that the jet acts on the plate through the guide plate to stop the plate without impact. Non-contact station of the plate conveying apparatus, characterized in that the control unit. The non-contact station of claim 1, wherein the non-contact station is further provided with a suction hole for sucking external air in the direction of the plate in the guide plate to increase the flow rate of the jet to smooth the flow. The non-contact station of claim 1, wherein the discharge hole is slotted or drilled along the transfer line in an alternative shape among circular, elliptical, and polygonal shapes. The non-contact station of the flat plate conveying apparatus further comprises a means for applying a bias force to balance the force by increasing the pulling force of the pushing force and the pulling force generated by the jet. As a means for applying a biasing force, the elevating means is driven so that the space between the flat plate inserts is narrowed so that the air in the upper portion of the flat plate is introduced in the jet direction, or the coanda jet generating means is disposed on the opposite side of the flat plate conveying direction. Equipped with a jet generating means configured to include a compressor and a nozzle on the opposite side of the flat plate conveying direction, or to provide a jet inclined from the bottom to the top or horizontally with respect to the flat plate Non-contact station of the plate conveying apparatus, characterized in that. The method of claim 1, wherein the control unit changes the flow rate and pressure of the jet discharged from the duct, or by installing the opening and closing means in the discharge hole to adjust the cross-sectional area of the discharge hole, or further install the discharge hole and the opening and closing means in the discharge hole The non-contact station of the plate conveying apparatus, characterized in that for adjusting the jet strength after entering the plate into the stop position and the jet strength after entering.

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