KR20080061663A - Air roller and conveyor using the same - Google Patents

Abstract

An air roller and a conveyor using the same are provided to reduce a manufacturing time and cost of the conveyor and safely convey plate members using air. An air roller includes a housing(10), a shaft(20), a blade(30), a guide(40), and a roller(50). The housing includes a base(11), and a block(12). The base has a rectangular plate shape. The block is installed at one side of the base. The shaft includes a first coupling part(21) coupled to the roller, a second coupling part(22) coupled to one side of the guide, a third coupling part(23) coupled to the blade, and a fourth coupling part coupled to the other side of the guide.

Description

Air roller and conveyor using the same

1 is a perspective view showing an air roller according to an embodiment of the present invention.

Figure 2 is an exploded perspective view showing an air roller according to an embodiment of the present invention.

3 is a cross-sectional view taken along the line A-A of FIG. 1.

4 is a cross-sectional view taken along the line B-B of FIG. 1.

5 is a front view showing a housing of the air roller according to an embodiment of the present invention.

Figure 6 is a side view showing a housing of the air roller according to an embodiment of the present invention.

Figure 7 is a front view showing a shaft of the air roller according to an embodiment of the present invention.

Figure 8 is a side view showing a shaft of the air roller according to an embodiment of the present invention.

Figure 9 is a front view showing a guide of the air roller according to an embodiment of the present invention.

10 is a cross-sectional view showing a guide of an air roller according to an embodiment of the present invention.

11 is a front view showing a roller of the air roller according to an embodiment of the present invention.

12 is a side view showing a blade of the air roller according to an embodiment of the present invention.

Figure 13 is a side view showing a conveyor using an air roller according to an embodiment of the present invention.

14 is a plan view showing a conveyor using an air roller according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: housing 20: shaft

30: blade 40: guide

50: roller 110: frame

120: air roller 130: guide roller

The present invention relates to an air roller and a conveyor using the same, and more particularly, by installing a blade on the shaft and giving a driving force after floating by air, the driving force by the air can be improved, and the air without a separate transmission means The conveying object can be conveyed only by the roller, and the center of the shaft and the center of the through hole are eccentrically installed to facilitate the flow of air, and the bent portion is formed on the blade to facilitate the floating by air. Since air holes are formed on both sides to selectively supply air, rollers can be rotated forward or reverse, and air rollers can be installed on the conveyor to reduce the production time and manufacturing cost of the conveyor. Regarding the air roller and the conveyor using the same that can be safely transported in the state of floating plate will be.

In general, glass substrates used in the manufacture of flat panel displays (FPD), such as thin film transistor-liquid crystal displays (TFT-LCDs), plasma display panels (PDPs), and electro luminescent (EL), are used for glass melting ( It is manufactured through a molding process of molding molten glass dissolved in a glass substrate melting furnace into a flat plate and a cutting process of cutting to meet a predetermined standard. Then, it is conveyed by the conveyor which conveys a glass substrate to a back stage, in order to sort it into good or bad goods, through a washing | cleaning process and an inspection process.

Recently, as the size of such flat panel displays has increased, glass substrates have also grown in size. Therefore, since the conveyor for conveying such a large glass substrate is also enlarged, it is difficult to maintain the top shape of the conveyor on which the glass substrate is placed.

In addition, since the deflection occurs at each position of the upper surface of the conveyor, when the glass substrate is conveyed, the glass substrate collides with the roller, which causes the glass substrate to be broken or particles due to scratches.

Conventional conveyors have used urethane, but when a predetermined use time has elapsed, there has been a problem in that the urethane is worn and the roller itself shakes.

In addition, about 20-30 drive shafts for supporting a large number of rollers are provided in the conveyor for transporting a large glass substrate, and about 200-300 rollers are installed. That is, such a conventional conveyor has a problem in that the structure is complicated and a large number of parts are installed, as well as the manufacturing is difficult and the manufacturing cost and manufacturing time are excessive.

As a conventional conveyor for improving these problems, Korean Patent Laid-Open Publication No. 2005-113976 has rollers arranged at both ends of the conveyor in a row, and a plurality of air supply manifolds are installed between the rollers, so that the air blown out of the manifold is provided. The pneumatic conveyor which conveys by a roller in the state which floated the plate-shaped member by this is disclosed.

Such a pneumatic conveyor significantly improves the conventional problems by installing a manifold, and is configured to prevent deformation of the plate member by installing air intakes at both ends.

However, in the case of large glass substrates, deflection is frequently caused in the middle part by self-weight, and when only the rollers at both ends are transported, there is a problem in that the deflection due to the self-weight of the large glass substrate cannot be prevented if air is constantly discharged. .

In addition, there is still a problem of deformation or collision caused by sagging due to the weight of a large glass substrate, and in order to improve this, complicated control means for controlling the amount of air blown out by each manifold must be additionally installed. And it is difficult to install the control means, too, there was a problem that excessive manufacturing cost and manufacturing time.

In order to solve this problem, the present applicant has proposed an air floating roller. However, since the air driving roller alone does not allow the conveying drive, it is possible to supply various electric means such as electric motors and shafts for driving the guide rollers and compressed air. In order to add a variety of equipment, there was a problem that the manufacturing cost increases.

In addition, since the roller is driven by injecting compressed air into the inclined groove, not only the driving force is weak, but also there is a problem including a risk of malfunction.

The present invention has been made in order to solve the above-mentioned conventional problems, it is possible to improve the driving force by the air, by providing a driving force after installing the blade on the shaft and floating by the air, without a separate transmission means air The conveying object can be conveyed only by the roller, and the center of the shaft and the center of the through hole are eccentrically installed to facilitate the flow of air, and the bent portion is formed on the blade to facilitate the floating by air. Since air holes are formed on both sides to selectively supply air, rollers can be rotated forward or reverse, and air rollers can be installed on the conveyor to reduce the production time and manufacturing cost of the conveyor, To provide an air roller and a conveyor using the same that can be safely transported in the state of floating And for that purpose.

In order to achieve the above object, the present invention provides an air roller for conveying an object by air while floating, the base (11) formed of a substantially square plate, and placed on one side of the base (11), with a through hole in the center portion. A housing (10) formed with a block (12) formed and communicating with an air hole (14) formed at a side surface through a communication hole (19) and communicating with an air blowing hole (15) formed at an upper side thereof; A shaft 20 fitted into the through hole 18 of the housing 10 to be rotated, the shaft 20 having a plurality of slot grooves 23a formed in an outer side thereof in a longitudinal direction; A blade 30 inserted into the slot groove 23a of the shaft 20 and floating by air to impart rotational force; It is fixed to both sides of the block 12 of the housing 10, and supports both ends of the shaft 20 via a bearing 42 fitted in the inner diameter hole 41, the block of the housing 10 ( 12) and a guide (40) whose contact surface with the shaft (20) is kept airtight; It is fixed to one side of the shaft 20, it characterized in that it comprises a roller 50 that rotates with the shaft 20.

More preferably, the center C2 of the shaft 20 is spaced apart from the center C1 of the through hole 18 of the housing 10 by a predetermined distance d.

More preferably, one side of the blade 30 is characterized in that the curved portion 31 is formed.

More preferably, the block 12 of the housing 10 has air holes 14 formed on both sides of the through-hole formed in the center portion through two communication holes 19 and communication grooves 19a formed on both sides of the lower end thereof. It is characterized by communicating with the holes 18, respectively.

The present invention for another purpose is characterized in that the air roller described above is installed in the bar fixed to the top of the frame (110).

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a perspective view showing an air roller according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing an air roller according to an embodiment of the present invention, Figure 3 is a cross-sectional view by the cutting line AA of FIG. 4 is a cross-sectional view taken along line BB of FIG. 1, FIG. 5 is a front view illustrating a housing of an air roller according to an embodiment of the present invention, and FIG. 6 is a housing of the air roller according to an embodiment of the present invention. 7 is a front view showing a shaft of the air roller according to an embodiment of the present invention, Figure 8 is a side view showing a shaft of the air roller according to an embodiment of the present invention, Figure 9 is a present invention Figure 10 is a front view showing a guide of the air roller according to an embodiment of the present invention, Figure 10 is a cross-sectional view showing a guide of the air roller according to an embodiment of the present invention, Figure 11 is an air roller according to an embodiment of the present invention A front view showing the roller, Figure 12 is a side view of the blade of air rollers according to one embodiment of the present invention.

As shown in Figures 1 to 4, the air roller of the present embodiment is composed of a housing 10, a shaft 20, a blade 30, a guide 40 and a roller 50 to transport the object while air floating. .

The housing 10 includes a base 11 formed in a substantially square plate shape, and a block 12 placed on one side of the base 11.

As shown in FIGS. 5 and 6, the base 11 is formed by penetrating a plurality of coupling holes 11a for engaging and fixing the frame of the conveyor, and at the lower end side of the base 11, the frame of the conveyor. The engaging jaw (11b) is formed to protrude in contact with the easy to fix the installation.

A through hole 18 is formed in the center of the block 12, and a communication hole 19 is formed below the through hole 18, and a communication groove 19a is formed to be inclined around the communication hole 19. The through hole 18 and the communication hole 19 communicate with each other via the communication groove 19a. A plurality of coupling holes 16 and pin holes 17 are formed around the through holes 18 to secure the guide 40.

In addition, an air hole 14 communicating in a direction perpendicular to the longitudinal direction of the communication hole 19 is formed at a side surface of the block 12 so that air introduced into the air hole 14 communicates with the communication hole 19 and the communication hole 19. It is possible to flow into the through hole 18 through the groove 19a.

Communication means, such as an air hose or manifold, are connected to the air hole 14 of the housing 10, and air is supplied to the housing 10 of each air roller as compressed air from the compressed air supply part of a compressor etc. which are separately installed outside. Supplied.

In addition, above the block 12, the air blowing holes 15 are formed vertically downward to communicate with the through holes 18. As shown in FIG. Therefore, the air introduced into the through hole 18 via the air hole 14 and the communication hole 19 is ejected upward of the block 12 through the air blowing hole 15. That is, the object to be transported can be floated by the ejection of air by the air ejection hole 15.

As shown in FIG. 7 and FIG. 8, the shaft 20 includes a first coupling portion 21 to which the roller 50 is coupled, a second coupling portion 22 to which the guide 40 on one side is coupled, and a blade ( The third coupling part 23 to which the 30 is coupled, and the fourth coupling part 24 to which the guide 40 on the other side is coupled are sequentially formed.

In addition, the first coupling portion 21 is provided with a key groove 21a for fitting the roller 50 to fix it with the key 54. In addition, a key groove 52 in which the key 54 is fixed is formed in the coupling hole 51 of the roller 50.

The third engaging portion 23 of the shaft 20 is fitted into the through hole 18 of the block 12 of the housing 10, so that the shaft 20 is rotatable within the through hole 18. In addition, a plurality of slot grooves 23a in the longitudinal direction are radially formed around the outer side of the third coupling portion 23 so that the plurality of blades 30 are slidably inserted into the respective slot grooves 23a.

For example, in the present embodiment, six slot grooves 23a are formed in the third coupling portion 23 of the shaft 20 in a radially equidistant interval of 60 degrees, and six blades 30 are inserted. Since it serves as a windmill wing, it is preferable that the shaft 20 is rotated by air. In addition, the present invention is not limited thereto, and the plurality of slot grooves 23a may be radially formed at equal intervals, so that the plurality of blades may be rotated by air.

In addition, the lower portion of the slot groove (23a) is formed with a curved portion (23b) to facilitate the flow of air from the lower side to the upper side to be able to easily float the blade 30.

In addition, since air flows in from the lower side of the through-hole 18 and discharges upward, the air passage in the through-hole 18 is narrow in the lower side, and widening the upper side facilitates the flow to the upper side of the air.

Therefore, the center C2 of the shaft 20 is installed to be spaced apart from the center C1 of the through hole 18 of the housing 10 below the predetermined distance d so that the air upwards in the through hole 18. It is desirable to smooth the flow.

In addition, in order to rotate the air roller of the present embodiment forward or reverse rotation, the block 12 of the housing 10 is formed with air holes 14 on both sides, respectively, and these air holes 14 are formed on both sides of the lower end. It is preferable to communicate with the through-holes 18 formed in the center part through the two communication holes 19 and the communication groove 19a, respectively.

Therefore, by selectively supplying air to both air holes 14 by providing a switching means such as a valve for controlling the supply of air from the compressed air supply unit, the air roller is rotated forward or reverse to move forward or reverse the object to be conveyed. Reverse travel is possible.

As shown in FIG. 12, the blade 30 inserted into the slot groove 23a of the shaft 20 protrudes outward of the shaft 20 while being floated by the air introduced into the through hole 18 so that the housing ( 10 is in contact with the inner wall of the through hole 18, a plurality of wings are formed in the shape of the protrusion around the shaft 20, the air is injected to the protruding blade 30, the rotational force on the shaft 20 Will be given.

In addition, a curved portion 31 is formed at one side of the blade 30 to abut the curved portion 23b of the slot groove 23a of the shaft 20, and a flat end portion 32 is formed at the other side of the housing 10. The through-hole 18 is in contact with the inner wall. That is, the curved portion 31 of the blade 30 makes it possible to smoothly float in the slot groove 23a.

4, 9 and 10, the guide 40 is fixed to both sides of the block 12 of the housing 10 via fixing means such as bolts and fixing pins 46, and blocks ( A plurality of coupling holes 43 and pinholes 45 corresponding to the plurality of coupling holes 16 and pinholes 17 of 12 are also formed on both side surfaces of the guide 40.

A coupling hole 44 is formed on one side of the middle portion of the guide 40 to fit with the second coupling portion 22 or the fourth coupling portion 24 of the shaft 20, and the bearing 42 on the other side thereof. The inner diameter hole 41 to be fitted is formed, and a stepped engaging hole 41a is formed between the inner diameter hole 41 and the coupling hole 44.

In addition, the inner side of the guide 40, that is, the contact portion with the through hole 18 of the housing 10 is formed with a curved guide groove 49 for guiding the air introduced into the through hole 18 upwards. have.

The guide 40 rotatably supports both ends of the shaft 20 via a bearing 42 and a coupling hole 44 fitted into the inner diameter hole 41, and blocks 12 of the housing 10. And the contact surface with the shaft 20 is kept airtight.

For example, as such a bearing 42, it is preferable to use various bearings, such as a ball bearing and a roller bearing which can be axially supported.

Further, for example, the contact surface between the block 12 of the housing 10 and the guide 40 is fitted with an O-ring groove 48a formed on the inner surface of the guide 40 as an airtight member. The seal is fitted and sealed, and it is preferable that the square ring 42a is fitted into the engaging hole 41a and sealed as a gastight member on the contact surface between the shaft 20 and the guide 40.

Therefore, the contact surface between the block 12 and the guide 40 of the housing 10 and the contact surface between the shaft 20 and the guide 40 are respectively sealed by the hermetic member, so that the air holes 14 of the block 12 The air introduced into the through hole 18 contacts the blade 30 of the shaft 20 to impart rotational force and blows only to the air ejection hole 15 on the upper side of the block 12.

That is, since the air is ejected only to the air ejection hole 15 which is communicated to the upper side of the block 12, the floating force due to the air from the lower side to the upper side to the transfer object such as the plate conveyed to the upper side of the block 12 This will occur.

At this time, since the noise generated by the air in the air blowing hole 15, it is preferable to install a silencer of about 10 to 12 mm to solve the air injury and noise problems at the same time.

As shown in FIG. 2 and FIG. 11, the roller 50 is fixed to the first engaging portion 21 on one end side of the shaft 20 via the key 54 and rotated together with the shaft 20. The outer circumferential portion 53 of the contact with the conveyed object is conveyed by the frictional force. In addition, in the coupling hole 51 formed in the central portion of the roller 50, a key groove 52 is formed in which the key 54 fitted to the key groove 21a of the first coupling portion 21 is fixed.

In addition, the rotation speed of the roller 50 can be controlled by adjusting the air pressure by a regulator of the pneumatic device, and in the case of using a plurality of rollers in a logistics transport system such as a conveyor, each roller 50 In order to control the same number of revolutions of the

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of a conveyor using an air roller of the present invention.

Figure 13 is a side view showing a conveyor using an air roller according to an embodiment of the present invention, Figure 14 is a plan view showing a conveyor using an air roller according to an embodiment of the present invention.

As shown in Fig. 13 and Fig. 14, the conveyor of this embodiment is largely comprised of a loading conveyor 100a, an air flotation conveyor 100b, and an unloading conveyor 100c, such as a flat panel such as TFT-LCD, PDP, EL, or the like. It is a conveyor for conveying glass substrates used in the field of manufacturing flat panel displays (FPDs).

When a conveying object such as a glass substrate is loaded on the loading conveyor 100a by a moving means such as a robot, the unloading conveyor 100c is transferred to the air roller conveyor 100b and installed at a predetermined position by the air roller conveyor 100b. Is returned.

For example, it is preferable that the rollers provided in the loading conveyor 100a and the unloading conveyor 100c are installed in an idle state to convey a conveying object such as a glass substrate.

In particular, the air roller conveyor of the present embodiment is composed of a frame 110, air roller 120 and guide roller 130, in the field of manufacturing flat panel display (FPD) such as TFT-LCD, PDP, EL, etc. It is a conveyor which conveys a glass substrate used, and conveys a conveying object by supplying air to an air roller, without using a separate drive means, such as a transmission means.

Conveyor frame 110 is a frame constituting the main body of the conveyor, a caster and a height adjusting portion, etc. are installed in the lower part to facilitate the conveyance and position adjustment of the conveyor, the bar 111 fixed in the horizontal direction at the top And bars 112 fixed in the advancing direction are respectively installed and fixed in a lattice form.

The air rollers 120 are installed in a row on the bars 112 fixed in the advancing direction above the frame 110 of the conveyor, and the rollers 50 lift the conveying objects such as glass substrates by air as compressed air. It rotates and conveys a conveyance object.

The guide roller 130 is installed in the frame at both ends of the bar 111 of the frame 110, and is rotated in an idle state, and the conveyor of this embodiment changes the position during conveyance of the object to be conveyed, such as a glass substrate. Not only prevents but also serves to guide and support both ends.

Therefore, since the air roller conveyor system of this embodiment conveys the object by supplying only air to the air roller, the motor, gear, non-contact magnet shaft and long shaft with glass required for the conveyance in the conventional conveyor system are long shaft with glass. Since there is no need to install size, etc., manufacturing cost can be significantly reduced.

However, the consumption of air is increased, but if a separate supply line is installed in the air supply unit provided in the production facility of the factory, the supply of air is made smoothly, the consumption of air is not a problem.

In addition, such a conveyor can be used as a conveying conveyor of various sheet materials as well as a glass substrate of a flat panel display.

The present invention described above can be embodied in many other forms without departing from the spirit or main features thereof. Therefore, the above embodiments are merely examples in all respects and should not be interpreted limitedly.

As described above, since the present invention provides a driving force after installing the blade on the shaft and floating by air, the driving force by the air can be improved, and the conveying object can be conveyed only by the air roller without a separate transmission means. Provide the effect.

In addition, the center of the shaft and the center of the through-hole can be installed eccentrically to facilitate the flow of air.

In addition, by forming a bent portion on the blade it can facilitate the injury by air.

In addition, air holes are formed on both sides to selectively supply air, so that the roller can be rotated forward or reverse.

By installing an air roller on the conveyor, it is possible to reduce the production time and manufacturing cost of the conveyor, and it is possible to safely transport the plate while floating the air by air.

Claims (5)

As an air roller to convey the object while floating by air, A base 11 formed of a substantially square plate, and an air hole 14 formed in a side surface of the base 11 through a communication hole 19 formed in a central hole through a communication hole 19; A housing 10 which is in communication with and comprises a block 12 in communication with an air blowing hole 15 formed at an upper side thereof; A shaft 20 fitted into the through hole 18 of the housing 10 to be rotated and having a plurality of slot grooves 23a formed at an outer side thereof; A blade 30 inserted into the slot groove 23a of the shaft 20 and floating by air to impart rotational force; It is fixed to both sides of the block 12 of the housing 10, and supports both ends of the shaft 20 via a bearing 42 fitted in the inner diameter hole 41, the block of the housing 10 ( 12) and a guide (40) whose contact surface with the shaft (20) is kept airtight; It is fixed to one side of the shaft 20, characterized in that it comprises a roller 50 which is rotated with the shaft (20). The method of claim 1, The center (C2) of the shaft (20), the air rollers, characterized in that spaced apart from the center (C1) of the through hole (18) of the housing (10) by a predetermined distance (d). The method of claim 1, Air rollers, characterized in that the curved portion 31 is formed on one side of the blade (30). The method of claim 1, The block 12 of the housing 10 has an air hole 14 formed at both sides of the through-hole 18 formed at the center via two communication holes 19 and communication grooves 19a formed at both sides of the lower end thereof. And an air roller which is in communication with each other. The conveyor according to any one of claims 1 to 4, wherein the air roller is installed on a bar fixed to an upper end of the frame (110).

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