KR100895451B1 - Sealing apparatus for external electrode flourscent lamp - Google Patents

Abstract

Sealing apparatus is disclosed. The sealing apparatus of an external electrode fluorescent lamp according to an embodiment of the present invention includes a transfer part, a first sealing part and a second sealing part. The transfer unit receives the bulbs horizontally and arranges them at regular intervals, and transfers the bulbs by repeating the operation of raising and lowering a predetermined number of bulbs together and lowering them again. The first sealing part is installed at one side of the conveying part, and heats and seals one end of the bulb by pinchers and burners that are raised and lowered on top of the bulb. The second sealing part is installed on the other side of the conveying part opposite to the first sealing part, and heats and seals the other end of the bulb by burners which can move left and right to adjust the position.

Description

Sealing apparatus for external electrode flourscent lamp

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing apparatus, and more particularly, to a sealing apparatus capable of performing a process by arranging burners for preheating, sealing, and pinching on top of a bulb of an external electrode fluorescent lamp.

In general, flat panel displays are classified into a light emitting type and a light receiving type, and the light emitting type includes a cathode ray, an electroluminescent (EL) element, a plasma display panel (PDP), and the like. Examples of the light receiving type include a liquid crystal display (LCD).

The light-receiving display device itself emits light and does not form an image, but receives light from the outside to form an image, so that a separate light source, for example, a backlight is installed to observe the image in a dark place.

Fluorescent lamps used for backlight include Cold Cathode Fluorescent Lamps (CCFLs) with electrodes at both ends, and External Electrode Fluorescent Lamps (EEFL) with electrodes at both ends.

CCFLs are classified into an edge type method using a light guide plate and a direct type method arranged in a plane according to the arrangement of the light source with respect to the display surface.

The edge type CCFL itself emits high brightness, but the panel's brightness is low, making it unsuitable for large screen panels. In addition, the direct type cannot be driven by a single inverter by connecting the CCFLs in parallel, and because the arrangement interval between CCFLs is large by limiting the number of CCFLs arranged in a plane for proper brightness of the panel, a special structure reflecting plate is required. Since the distance between the diffusion plate and the lamp is increased in order to obtain uniform luminance, there is a problem that the thickness of the panel is increased.

Therefore, EEFL is required and proposed in response to the development of a backlight that can provide a long life and light weight while ensuring high brightness and high efficiency of the liquid crystal display of the larger size trend.

EEFL applies a fluorescent material to the inner wall of the glass tube, injects a gas mixed with mercury (Hg), neon (Ne) and argon (Ar) into the glass tube, seals both ends of the glass tube, and forms a conductor film on both ends of the glass tube. Manufacture.

When the conductor is connected to a high voltage (approximately 1,400-1,500 V) and 55-60 kHz, the emitted electrons strike the vaporized mercury particles inside the glass tube, causing the ultraviolet light to collide with the fluorescent material, resulting in visible light. Unlike fluorescent lamps, the electrodes are exposed to the outside and lighted by electron emission by electric field, and a large number of lamps can be lit by one inverter. In addition, it has a lifespan of 20,000 to 50,000 hours, a tube diameter of 10 mm or less, low power consumption, and no heat generation.

When the external electrode fluorescent lamp performs the sealing operation, the sealing process is performed on the A side while the bulb is held in the vertical direction, and the bulb is rotated again to perform the sealing process on the B side.

However, in the case of performing the sealing work vertically, a device for holding the bulb vertically and a rotating device are needed, which increases the price of the equipment and increases the cost, and increases the working time due to the process of rotating the bulb. Poor productivity, holding vertically to rotate the work after rotating the bulb is damaged or there is a problem that the productivity is reduced due to the failure.

The technical problem to be achieved by the present invention is to provide a sealing device of an external electrode fluorescent lamp to perform the sealing and pinching process by placing the bulb in the horizontal position and the burner on the top of the bulb.

The sealing apparatus of the external electrode fluorescent lamp according to an embodiment of the present invention for achieving the above technical problem is provided with a transfer part, the first sealing portion and the second sealing portion.

The transfer unit receives the bulbs horizontally and arranges them at regular intervals, and transfers the bulbs by repeating the operation of raising and lowering a predetermined number of bulbs together and lowering them again. The first sealing part is installed on one side of the conveying part, and heats and seals one end of the bulb by pinchers and burners which are disposed on and above the bulb. The second sealing part is installed on the other side of the conveying part opposite to the first sealing part, and heats and seals the other end of the bulb by burners which can move left and right to adjust the position.

The first sealing unit includes a first gauging unit for aligning the bulbs to be seated on the upper surface of the transfer unit; A first preheating part for preheating one end of the bulbs by moving down the first preheating burners installed above the bulbs; Sealing and pinching parts for sealing the first end of the bulb and pinching the first sealing burners installed on the bulb and the pinch installed on the lower portion to move up and down to remove the stress caused by heating on one end of the bulb And a first annealing unit. The first gauging part, the first preheating part, the sealing and pinching part, and the first annealing part are arranged in order in the direction in which the bulbs are transferred from the place where the bulbs are input.

The first preheating unit, the preheat burner mounting portion is installed on the upper portion of the transfer unit, the plurality of first preheat burners are arranged in parallel with the transport direction of the bulb; And a preheating cylinder part disposed above the preheating burner mounting part and configured to raise and lower the preheating burner mounting part.

The sealing and pinching unit may include a heating unit installed at the top of the bulbs and heating the bulbs while moving up and down; and a pinching unit installed at the bottom of the bulbs and pinching the bulbs while moving up and down.

The heating unit may include: a first sealing burner mounting unit disposed on the bulbs and having a plurality of first sealing burners arranged in a horizontal direction with the conveying direction of the bulbs; And a sealing cylinder portion disposed above the first sealing burner mounting portion and configured to raise and lower the first sealing burner mounting portion.

The pinch part may include a pinch cylinder for operating the plurality of pinches to pinch the bulbs; And a pinch lift cylinder installed below the pinch cylinder and moving the pinch cylinder and the pinch up and down.

Further, between the first gauging portion and the first preheating portion, a seal-cut burner installed at the lower portion of the bulbs may move left and right to further form a seal-cut portion for forming the seal-cut portion on the bulbs.

The thread-cut molding unit may include: a thread-cut transfer plate on which a plurality of thread-cut burners for heating one end of the bulbs are mounted; A thread feed rail for moving the thread feed plate so that the thread burners move from side to side at the bottom of the bulbs to adjust a position at which the bulbs are heated; And a thread cut left and right feed apparatus connected to the thread feed plate to move the thread feed plate along the thread feed rail.

The transfer unit may be arranged in two rows in the conveying direction of the bulbs, and a groove having left and right seating grooves on which both ends of the bulbs are seated may be formed at regular intervals, and move the bulbs to move left and right; A left and right driving unit installed at a lower portion of the bulb left and right conveying unit and configured to raise, lower and move the bulb left and right conveying unit; Axles having a first length and a second length are continuously arranged alternately along the conveying direction of the bulbs, and a rotating roller is coupled to one end of the shafts so as to cross each other, and the other end of the shafts is formed with a pulley. Rotating portion, each of which is disposed on the outer side of the bulb left and right conveying portion to rotate the bulb is placed on the intersection of the rotating roller to rotate; And a rotation driving unit coupled to the pulley to enable power transmission, thereby rotating the rotating rollers.

When the bulbs are conveyed, the left and right conveyers transfer the one end of the bulbs at an angle up to an angle until the first annealing portion is transferred, and the bulbs are horizontally transferred after the first annealing portion.

The first preheating part and the sealing and pinching part perform heating and pinching operations without rotating the bulb. The second preheating unit includes a second preheating unit configured to seal the other ends of the bulbs by moving the second preheating burners installed at the lower sides of the bulbs from side to side; A sealing unit configured to seal the other end of the bulb by moving the second sealing burners installed at the lower sides of the bulbs from side to side; And a second annealing portion for removing stress generated by heating at the other end of the bulbs.

The second preheating unit may include: a transfer plate on which a plurality of second preheat burners are mounted to heat the other ends of the bulbs below the bulbs; A transfer rail moving the transfer plate to adjust the position at which the bulbs are heated by moving the second preheat burners from side to side under the bulbs; And a left and right transfer apparatus connected to the transfer plate to move the transfer plate along the transfer rail.

A loading unit which receives the bulbs from a supply hopper and supplies them to the transfer unit; A gauging and bad extraction unit for aligning the bulbs and taking out defective bulbs after the second sealing unit; And an unloading unit for discharging the bulbs that have passed through the gauging and bad extraction unit.

As described above, the sealing apparatus of the external electrode fluorescent lamp according to the embodiment of the present invention can eliminate the device for holding the bulb vertically by performing the sealing process on the A side and the B side while keeping the bulb in a horizontal state. Cost reduction of sealing device manufacturing and minimization of warpage or stress of the bulb has the advantage of improving the product characteristics.

In addition, there is an advantage to remove the foreign matter that may occur inside the bulb by raising the A side at a predetermined angle during transport of the bulb in the first sealing portion and to allow the heat generated inside the bulb to escape smoothly.

In addition, the first preheating burner and the first sealing burner are installed at the upper part of the bulb in the first sealing part, thereby avoiding interference with other mechanisms that may occur when there are burners under the bulb, and uniformly maintaining the pinching process and the next process. There is an advantage that the maintenance cost can be minimized by easy maintenance.

DETAILED DESCRIPTION In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 is a front view of a sealing apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of the sealing apparatus of FIG. 1.

1 and 2, the sealing apparatus 100 of the external electrode fluorescent lamp according to the embodiment of the present invention includes a transfer part 110, a first sealing part 150, and a second sealing part 170. .

The transfer unit 110 receives the bulbs B horizontally and arranges them at regular intervals, and transfers the bulbs B by repeating an operation of raising and transferring the predetermined number of bulbs B together and lowering them again. .

The first sealing unit 150 is installed on one side of the conveying unit 110, and heats and seals one end of the bulb B by the burners that are disposed above and above the pinch and the bulb. . The second sealing unit 170 is installed on the other side of the conveying unit 110 opposite to the first sealing unit 150, and heats and seals the other end of the bulb B by burners which can be moved left and right. . In this case, the expression "burners" is a general term for burners having various names belonging to a block corresponding to each functional component.

In more detail, the first sealing part 150 is installed on the first gauging part 210 and the bulbs B to align the bulbs B so as to be seated on the upper surface of the transfer part 110. The first preheating part 220 for preheating one end of the bulbs B by moving the first preheating burners downward, the first sealing burners provided on the upper part of the bulbs B and the pinches installed on the lower part A sealing and pinching unit 230 which moves to seal and pinch one end of the bulb B and a first annealing unit 240 which removes stress generated by heating at one end of the bulbs B are provided.

The first gauging unit 210, the first preheating unit 220, the sealing and pinching unit 230, and the first annealing unit 240 transfer the bulbs B from the place where the bulbs B are input. Are arranged in order in the direction.

The second sealing unit 170 of the second preheating unit 250, the bulbs (B) of the second preheat burners installed in the lower portion of the bulbs (B) to move left and right to preheat the other end of the bulbs (B) The second sealing burners installed at the lower side move left and right to seal the other end of the bulb B and the second annealing unit 270 for removing stress generated by heating at the other end of the bulb B. ).

1 and 2, for convenience of description, the bulbs B are received from a supply hopper (not shown) and then the bulb unit 180 and the bulbs after the second sealing unit 170 are supplied to the transfer unit 110. Disclosed are a gauging and bad extraction unit 190 for aligning (B) and taking out defective bulbs, and an unloading unit 195 for discharging the bulbs B passed through the gauging and bad extraction unit 190. . Since the structure and operation of the feed hopper (not shown), the loading unit 190, the gauging and bad extraction unit 190 and the unloading unit 195 can be understood by those skilled in the art, a detailed description thereof will be omitted.

Hereinafter, the detailed configuration of the sealing apparatus 100 shown in Figs. 1 and 2 will be described together with the operation thereof.

3 is a plan view for explaining the structure of the transfer unit.

4 is a side view for explaining the structure of the transfer unit.

3 and 4, the transfer unit 110 includes a bulb left and right transfer unit 310, left and right driving units (not shown), a rotating unit, and a rotating driving unit. Bulb left and right transfer unit 310, the left and right driving unit (not shown), the rotating unit and the rotating driving unit is mounted on the frame structure evenly top.

Bulb left and right conveying portion 310 is arranged in two rows in the moving direction of the bulbs (B), the mounting grooves 313 on which both ends of the bulbs (B) are seated at regular intervals, the bulbs (B) To move it left or right. The left and right driving unit (not shown) is installed at the lower part of the bulb left and right conveying unit 310 and moves up, down and moves the bulb left and right conveying unit 310. The left and right driving unit may be configured as a cylinder structure for raising and lowering the bulb left and right transport unit 310 and a structure in which a motor for moving is coupled.

Although the structure of the left and right driving unit is not shown in the figure, if the structure to perform the function of raising, lowering and moving the entire bulb left and right transfer unit 310, it will be understood by those skilled in the art and will not be described in detail.

In addition, the bulb left and right transfer unit 310, as shown in FIG. One bulb left and right conveying portion 310 may be provided with a plurality of seating grooves 313, preferably six seating grooves 313 may be formed. Thus, the six bulbs B move together in the same process.

Rotating portion of the rotating shaft 320 having a first length and a second length 320 is arranged in succession alternately along the conveying direction of the bulbs (B), the rotating roller 330 so that a predetermined portion crosses each other at one end of the shaft (320) Are coupled, and the other end of the shafts 320 is formed with a pulley 340.

Rotating parts are respectively disposed on the outside of the bulb left and right conveying part 310 so that the bulbs (B) is placed on the intersection of the rotating roller 330 to rotate. Here, the first length is longer than the second length. Since the shafts 320 are different in length from each other, as shown in FIG. 3, the rotating rollers 330 coupled to the ends of the shafts 320 are alternately disposed while the neighboring rotating rollers 330 overlap each other.

The rotary drive unit is coupled to the pulley 340 to enable power transmission to rotate the rotating rollers 330. As shown in FIG. 4, the pulley 347 connected to the rotating motor 350 is connected to the pulley 340 connected to the shaft 320 by the belt 345. However, the present invention is not limited to the structure shown in FIG. 4, and any structure may be applied as long as the structure can transmit power to the pulley 340.

As shown in FIGS. 3 and 4, the bulbs B input through the loading unit 180 are seated in the seating grooves 313 formed on the surface of the bulb left and right conveying unit 310 of the conveying unit 110. In addition, when the first preheating unit 220, the sealing and pinching unit 230, and the gauging unit 235 are moved from the first gauging unit 210, the first sealing unit 150 side of the bulbs B is moved. That is, the A side moves up by a predetermined angle. The predetermined angle is between about 0 degrees and 5 degrees with respect to the horizontal plane.

Then, foreign matters that may occur inside the bulbs B may easily escape to the inclined side, and heat generated inside the bulbs B may smoothly escape when heated. After the first annealing part 240, the bulbs B move horizontally. This operation may be implemented by raising the bulb left and right conveying unit 310 by the required angle by controlling the left and right driving unit on the A side of the bulbs (B).

Both ends of the bulbs (B) seated in the seating groove 313 is placed on the point where the rotating rollers 330 cross each other as shown in FIG. 3 and the bulbs (rotating as the rotating rollers 330 rotate). B) rotate.

1 and 2, the first preheating unit 220, the sealing and pinching unit 230, and the gauging unit 235 rotate in the first gauging unit 210 of the first sealing unit 150. No part is placed. Thus, the bulbs B are processed by preheating, sealing and pinching processes while being fixed without rotation.

The bulbs B discharged from the loading unit 180 and seated in the seating grooves 313 of the bulb left and right transporting units 310 may be equally seated on the upper surface of the transporting unit 110 by the first gauging unit 210. Aligned. That is, the first gauging unit 210 pushes and arranges one end of the bulbs B such that one end of the bulbs B is aligned in the same position. The first gauging unit 210 may be implemented by a device such as a pneumatic cylinder, and this gauging process and the structure of the first gauging unit 210 can be understood by those skilled in the art, and thus a detailed description thereof will be omitted.

5 is a front view illustrating the structure of the first preheating unit.

After the gauging process, the bulbs B are preheated by the first preheater 220. That is, the first preheat burners 510 installed above the bulbs B move downward to preheat one end of the bulbs B. FIG. By installing the first preheat burner on the bulbs B, the first preheating burners 610 of the pinching process, which is the next process, avoid interference with other mechanisms that may occur when there are preheat burners under the bulbs B. Also located on top of the bulbs (B) can be a unified process can be easy to maintain.

In more detail, the first preheating unit 220 includes a preheat burner mounting unit 520 and a preheating cylinder unit 530. The preheat burner mounting part 520 is installed on the upper part of the transfer part 110, and the plurality of first preheat burners 510 are mounted to be horizontally aligned with the transfer direction of the bulbs B. Six pairs of first preheat burners 510 may also exist to correspond to one bulb left and right transfer unit 310. The preheating cylinder part 530 is disposed above the preheating burner mounting part 520 to raise and lower the preheating burner mounting part 520.

As shown in FIG. 5, the preheating cylinder unit 530 raises and lowers the preheating burner mounting unit 520 using a cylinder. The preheat burner mounting part 520 lowers the first preheat burners 510 to heat the bulbs B seated on the bulb left and right conveying part 310 of the conveying part 110. Preheat. At this time, since the bulb B is seated in the seating groove 313 of the bulb left and right conveying unit 310, it is preheated in the stopped state without rotation.

6 (a) and 6 (b) are front views illustrating the structure of the sealing and pinching portion 230.

The sealing and pinching part 230 is installed above the bulbs B and moves up and down while being installed below the heating unit 603 and bulbs B that heat the bulbs B, and moves up and down. The pinch part 605 pinching the bulbs B is provided.

More specifically, the heating unit 603 is installed on the bulbs (B) and the first sealing burner mounting portion in which the plurality of first sealing burners 610 are mounted in a horizontal direction with the transport direction of the bulbs (B) 620 and a sealing cylinder portion 630 disposed above the first sealing burner mounting portion 620 to raise and lower the first sealing burner mounting portion 620. When the bulbs B are heated by the heating unit 603, the bulbs B are seated in the seating grooves 313 of the bulb left and right conveying units 310 and are heated in a stopped state without rotation. Since the structure of the heating unit 603 is the same as that of the preheating unit 220 of FIG. 5, a detailed description thereof will be omitted.

The pinch unit 605 is installed below the pinch cylinder 650 and the pinch cylinder 650 for operating the plurality of pinches 660 to pinch the bulbs B, and the pinch cylinder 650 and pinch A pinch lift cylinder 670 for moving the field 660 up and down is provided.

The pinch lift cylinder 670 raises and lowers the pinch cylinder 650 and the pinches 660 along the guide 670. The pinch cylinder 650 is fixed to the bottom plate 680 of the "C" shape, and the bottom plate 680 is fastened to the guide 670 by the fastening part 675, and the fastening part 675 is guide 670. Can move up and down.

The fastening part 675 may be formed of a ball bush, and any one of the structures that can move along the other guide 670 may be applied to those skilled in the art.

When the pinch cylinder 650 is raised, the control block 655 mounted on the bar 657 attached to the upper portion of the bottom plate 680 is operated. The control block 655 has two control panels 661 and 663 and pinch bearings 651 installed to face each other on one side of the control panels 661 and 663.

The control panel 661 is commonly connected to the left side of the pinch 660 and the control panel 663 is commonly connected to the right side of the pinch 660 so that the distance between the control panel 661 and the control panel 663 is far. When the right and left portions of the ground pinches 660 are opened apart from each other, the distance between the control panel 661 and the control panel 663 is close, and the right and left portions of the pinches 660 are close. Pinching operation is performed.

A pinch pin 653 is formed on the cylinder bar 659 mounted on the pinch cylinder 650. As the pinch cylinder 650 rises, when the pinch pin 653 is inserted between the pinch bearings 651 and pushes the control panels 661 and 663 to both sides, the right and left portions of the pinch 660 are separated from each other. To be opened. On the contrary, when the pinch pins 653 come out between the pinch bearings 651, the pinches 660 perform a pinching operation.

This operation is only one embodiment, and it will be understood by those skilled in the art that the structure for the pinching operation can be variously modified.

7 is a view for explaining the operation of the first preheating unit and the sealing and pinching unit.

Referring to FIG. 7, the first preheat burner 510 of the first preheater 220 is lowered to heat one end (A side end) of the bulb B seated on the bulb left and right feeder 310. At this time, the bulb B does not rotate and remains fixed. After the preheating in the preheating unit 220, the bulb left and right conveying unit 310 is moved to be located in the sealing and pinching unit 230.

The first sealing burner 610 of the heating unit 603 of the sealing and pinching unit 230 descends to heat one end (A side end) of the bulb B. At this time, the bulb B does not rotate and remains fixed. After the heating is finished, the first sealing burner 610 rises and the pinch 660 under the bulb B rises as the first sealing burner 610 rises to pinch the bulb B ( 660) and stop. Then, the pinching operation is performed by the pinch cylinder 650. By this process, a getter room is formed on the A side.

Control of the degree and position in which the first preheater 220 and the sealing and pinching unit 230 are raised and lowered is performed by a control box (not shown), and thus a detailed description thereof will be omitted.

After the process of the sealing and pinching part 230 is finished, the bulbs B are once again aligned by the gauging part 235 and once again by the first annealing part 240 one end of the bulbs B. The stress generated by heating is removed. Since the operation of the first annealing unit 240 to remove the stress can be understood by those skilled in the art, a detailed description thereof will be omitted.

The first sealing part 150 of the sealing device 100 is a seal-movable from side to side installed under the bulbs B between the first gauging part 210 and the first preheating part 220. The burners 370 further include a thread-cut molding part for molding the thread-cut part on the bulbs B. FIG. That is, a process of molding the cut portion before the molding of the getter room on the A side may be further added. A cut burner for forming the cut portion is shown in Figs. 4 and 8-9.

Fig. 8 (a) is a view for explaining the state before moving the cut burner of the cut part.

Fig. 8B is a view for explaining the state after the thread burner of the thread cut part is moved.

It is a figure explaining the structure of a cut burner.

As shown in FIG. 4, the cut mold includes a plurality of cut burners 370 that may move from side to bottom in the bulbs B and adjust positions.

The thread-cut molding unit has a plurality of thread-cut transfer plates 910 in which a plurality of thread burners 370 for heating one end of the bulbs B are mounted at the bottom of the bulbs B, and the thread burners at the bottom of the bulbs B. 370 is connected to the thread feed rail 920 and the thread feed plate 910 to move the thread feed plate 910 to move the left and right to adjust the position where the bulbs (B) is heated, the thread feed rail 920 It is provided with a thread cut left and right feed device 930 for moving the thread feed plate 910 along.

The thread cut left and right transfer device 930 may be implemented as a device capable of horizontally moving the thread feed plate 910, such as a cylinder or a linear unit.

Referring to FIG. 8A, the positions of the cut burners 370 and the bulbs B do not coincide with each other. In this case, the thread feeder 930 moves the thread feed plate 910 along the thread feed rail 920 to match the positions of the thread burners 370 and the bulbs B. FIG. 8 (b) shows the state where the cut burners 370 and the bulbs B are matched. Then, one side of the bulbs B is heated by the thread burners 370 to form a thread cut part.

In addition to the rotating roller 330 in FIG. 8A, the rotating roller 330 may further include a rotating roller 330_1.

The second sealing unit 170 is the second preheating burner (not shown) installed in the lower portion of the bulb moves to the left and right to seal the other ends of the bulbs (B) and the bulbs (B) The second sealing burners installed at the bottom of the sealing unit 260 moves to the left and right to seal the other end of the bulb and the second annealing unit to remove stress generated by heating at the other end of the bulbs (B). 270.

The second preheater 250 includes a transfer plate (not shown) in which a plurality of second preheat burners (not shown) are mounted to heat the other ends of the bulbs under the bulbs B, and a second preheat burner under the bulbs. And a transfer rail (not shown) for moving the transfer plate to move the left and right to adjust the position where the bulbs are heated, and a left and right transfer device (not shown) for moving the transfer plate along the transfer rail.

The second preheating part 250 and the sealing part 260 have the same structure as the structure of the thread-cut molding described above. That is, the cut burner 370 shown in FIG. 4 and the structures shown in FIGS. 8 to 9 are formed under the bulbs B, like the structures of the second preheating part 250 and the sealing part 260. Second preheat burners (not shown) and second sealing burners (not shown) are disposed and the other ends of the bulbs B are heated after the burners are moved left and right to be aligned with the bulbs B. FIG.

As such, since the structure and operation of heating the bulbs B under the bulbs B have been described above, a detailed description thereof will be omitted.

10 is a view for explaining a machining process of the bulb according to the operation of the sealing device of FIG.

Referring to FIG. 10, the loaded bulbs B may include a first gauging part 210, a cut molding part, a first preheating part 220, a sealing and pinching part 230, and a first annealing part 240. It can be seen that the A side sealing process is performed by) to form a getter room and a seal cut part on the A side. Then, the sealing on the B side is performed by the processes of the second preheating unit 250, the sealing unit 260, and the second annealing unit 270, and the gauging process 280 and the gauging and bad extraction unit 190 are performed. The bulbs B are unloaded by the unloading unit 195 via ().

The sealing device 100 mounts the burners above the bulbs B for sealing the A side of the electrodes supplied from the loading unit 180, raises the pinches disposed below the bulbs after preheating and heating. By performing the pinching operation and sealing the B side in the horizontal state of the bulbs, it is possible to reduce the defect of the bulb and improve the working speed.

As described above, optimal embodiments have been disclosed in the drawings and the specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the present invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.

1 is a front view of a sealing apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of the sealing apparatus of FIG. 1.

3 is a plan view for explaining the structure of the transfer unit.

4 is a side view for explaining the structure of the transfer unit.

5 is a front view illustrating the structure of the first preheating unit.

6 (a) and 6 (b) are front views illustrating the structure of the sealing and pinching portions.

7 is a view for explaining the operation of the first preheating unit and the sealing and pinching unit.

Fig. 8 (a) is a view for explaining the state before moving the cut burner of the cut part.

Fig. 8B is a view for explaining the state after the thread burner of the thread cut part is moved.

It is a figure explaining the structure of a cut burner.

10 is a view for explaining a machining process of the bulb according to the operation of the sealing device of FIG.

Claims (11)

In the sealing device of the external electrode fluorescent lamp, A transport unit configured to receive bulbs horizontally and arrange them at regular intervals, and to transfer the bulbs by repeating an operation of raising and transporting a predetermined number of bulbs together; A first sealing part installed at one side of the conveying part and configured to heat and seal one end of the bulb by pinchers and upper and lower burners which are raised and lowered; And A second sealing part installed on the other side of the conveying part opposite to the first sealing part and heating and sealing the other end of the bulb by means of burners capable of horizontally moving by moving left and right; The first sealing unit, A first gauging unit for aligning the bulbs to be seated on the upper surface of the transfer unit; A first preheating part for preheating one end of the bulbs by moving down the first preheating burners installed above the bulbs; A sealing and pinching part for sealing and pinching the one end of the bulb by moving the first sealing burners installed on the bulbs and the pinches provided on the lower part up and down; And A first annealing unit for removing stress generated by heating at one end of the bulbs, And the first gauging part, the first preheating part, the sealing and pinching part, and the first annealing part are sequentially arranged in a direction in which the bulbs are transferred from the place where the bulbs are input. delete The method of claim 1, wherein the first preheating unit, A preheat burner mounting unit disposed above the transfer unit and configured to include a plurality of the first preheat burners arranged in parallel with a transfer direction of the bulbs; And And a preheating cylinder unit disposed above the preheating burner mounting unit and configured to raise and lower the preheating burner mounting unit. The method of claim 1, wherein the sealing and pinching portion, A heating unit installed on the bulbs and heating the bulbs while moving up and down; And A pinching part installed at a lower portion of the bulbs to pinch the bulbs while moving up and down; The heating unit, A first sealing burner mounting part installed on the bulbs and having a plurality of first sealing burners arranged in a line with the conveying direction of the bulbs; And A sealing cylinder portion disposed above the first sealing burner mounting portion and configured to raise and lower the first sealing burner mounting portion; The pinching unit, A pinch cylinder for operating the plurality of pinches to pinch the bulbs; And And a pinch lift cylinder installed below the pinch cylinder and moving the pinch cylinder and the pinch up and down. According to claim 1, Between the first gauging portion and the first preheating portion, Seal-cut burners provided in the lower portion of the bulbs (Seal-cut burner) is further provided to form a seal-cut portion for forming the seal portion in the bulb, The thread-cut molding portion, A thread transfer plate having a plurality of thread burners configured to heat one end of the bulbs under the bulbs; A thread feed rail for moving the thread feed plate so that the thread burners move from side to side at the bottom of the bulbs to adjust a position at which the bulbs are heated; And Sealing device characterized in that it is connected to the thread feed plate, the thread cut left and right feed device for moving the thread feed plate along the thread feed rail. The method of claim 1, wherein the transfer unit, A bulb left and right transfer unit disposed in two rows in the conveying direction of the bulbs and having a seating groove in which both ends of the bulbs are seated on a surface at regular intervals, and moving the bulbs upward and leftward; A left and right driving unit installed at a lower portion of the bulb left and right conveying unit and configured to raise, lower and move the bulb left and right conveying unit; Axles having a first length and a second length are continuously arranged alternately along the conveying direction of the bulbs, and a rotating roller is coupled to one end of the shafts so as to cross each other, and the other end of the shafts is formed with a pulley. Rotating portion, each of which is disposed on the outer side of the bulb left and right conveying portion to rotate the bulb is placed on the intersection of the rotating roller to rotate; And Sealing device characterized in that it is coupled to enable the power transmission to the pulley to rotate the rotating roller for rotating the rotating rollers. According to claim 6, The bulb left and right transfer unit, Sealing device, characterized in that for conveying the bulbs to the inclined to raise the one end of the bulb by a predetermined angle until before the first annealing portion, and after the first annealing portion to convey the bulbs horizontally. The method of claim 1, wherein the first preheating portion and the sealing and pinching portion, Sealing apparatus, characterized in that for performing the heating and pinching operation without rotating the bulb. The method of claim 1, wherein the second sealing portion, A second preheating part configured to seal the other ends of the bulbs by moving the second preheat burners installed at the lower sides of the bulbs from side to side; A sealing unit configured to seal the other end of the bulb by moving the second sealing burners installed at the lower sides of the bulbs from side to side; And And a second annealing portion for removing stress generated by heating at the other ends of the bulbs. The method of claim 9, wherein the second preheating unit, A transfer plate on which a plurality of second preheat burners are mounted to heat the other ends of the bulbs under the bulbs; A transfer rail moving the transfer plate to adjust the position at which the bulbs are heated by moving the second preheat burners from side to side under the bulbs; And Sealing device characterized in that it is connected to the transfer plate, the left and right transfer device to move the transfer plate along the transfer rail. According to claim 1, Loading unit for receiving the bulb from the supply hopper to the transfer unit; A gauging and defective extraction unit for aligning the bulbs and taking out defective bulbs after the second sealing part; And Sealing device further comprises an unloading unit for discharging the bulbs passing through the gauging and bad extraction unit.

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