KR100920213B1 - Cap soldering machine for EEFL - Google Patents

Abstract

The present invention automatically couples the electrode caps to both ends of the glass tube, and the external electrode fluorescent lamp enables the robot first and second arms consisting of multiple joints to simultaneously solder a plurality of glass tubes, thereby enabling a stable soldering process at a high speed. For a cap soldering machine.

Soldering machine for an external electrode fluorescent lamp according to the present invention, the supply unit for horizontally moving the glass tube supplied from the hopper forward by a predetermined length; A cap assembly unit installed at both ends of the supply unit and coupling the electrode cap of the cap feeder to both ends of the glass tube; A gauging unit installed at the front end of the supply unit and having a plurality of seating grooves formed at a predetermined interval so that the glass tube is stacked at a predetermined interval; An input unit which is installed at an upper portion of the supply unit at a position between the supply unit and the gauging and is provided with a jaw for holding a glass tube to seat the glass tube of the supply unit in a seating groove of the gauging unit; A plurality of preheating units provided with a preheater to preheat the glass tube; A plurality of articulated arms for conveying the preheated glass tube group; A plurality of ultrasonic solder baths in which the glass tube group conveyed by the plurality of articulated arms is vertically received and the ends thereof are soldered; It characterized in that it comprises a discharge unit for transferring the group of glass tubes soldered in the plurality of ultrasonic solder bath to the finished product hopper.

Description

Cap soldering machine for external electrode fluorescent lamp

The present invention relates to a cap soldering machine for an external electrode fluorescent lamp, and in particular, to automatically couple the electrode caps to both ends of the glass tube, and to discharge the defective glass tube before and after soldering, as well as a robot made of multiple joints The present invention relates to a cap soldering machine for an external electrode fluorescent lamp, in which two arms simultaneously solder a plurality of glass tubes, thereby enabling a stable soldering process at a high speed.

Generally, liquid crystal display (LCD) devices used in flat panel display devices include non-light emitting devices that do not emit light by themselves, and include a backlight device that provides a separate light source. Cold backlight fluorescent lamps (CCFL) and external electrode fluorescent lamps (EEFL: External Electrode Fluorescent Lamps) are used as the fluorescent lamps for backlights. Outside the lamp, the light is induced by inducing plasma discharge in the lamp by an electric field applied to the electrode. The external electrode fluorescent lamp is a plasma fluorescent lamp with less heat dissipation because the tube itself does not generate heat, and the driving system can drive several lamps at the same time as 1.500V, which is much lower than the conventional system. The power consumption can be reduced by up to 50% compared to the CCFL method. In addition, since the electrode is external, the lifespan of the lamp is 5 times higher than that of general fluorescent lamps. In order to manufacture such an external electrode fluorescent lamp, a cap soldering process for coupling an electrode cap to both ends of the outer glass tube and soldering the cap and the glass tube must be performed.

1 is a conceptual diagram of a conventional soldering machine for external electrode fluorescent lamps, the conventional cap soldering machine is provided with ultrasonic solder bath (2) (3), respectively, on both sides of the turntable (1) located in the center, At a position adjacent to (1), an input unit 4 and a discharge unit 5 are installed. According to such a conventional external electrode fluorescent lamp soldering machine, the lower end is soldered in one side ultrasonic brazing tank 2 in a state in which the glass tube supplied by the input unit 4 is standing upright, and then installed in the turntable 1 The glass tube ultrasonically soldered by the inversion device 6 is inverted up and down, and the inverted glass tube is soldered in the ultrasonic solder bath 3 on the other side of the turntable 1, and then discharged through the discharge unit 5. Therefore, in such a conventional cap soldering machine, a glass tube having a cap coupled to both ends in advance is introduced into the ultrasonic brazing tank 2 by a separate process, and the soldered glass tube is inverted and then introduced into another ultrasonic brazing tank 3. , The process of covering the cap with a separate glass tube is not necessary, so the continuous process is not made, and the cap and the glass tube before being put into the ultrasonic lead bath (2) (3) are not preheated at all.

In addition, since the turntable 1 rotates and the glass tube soldered on one side is inverted up and down by the inversion device 6, the soldering of the turntable 1 is performed in addition to the soldering without the preheating process as described above. Since a certain time is also required for the reversal of the glass tube of the rotation and the inversion device 6, the cap soldering process as a whole takes a lot of time, and thus a high speed cap soldering process cannot be achieved.

The present invention has been made to solve the conventional problems as described above, an object of the present invention, the cap is coupled to the glass tube in a continuous process, the glass tube and the cap is combined before the glass tube combined with the cap is introduced into the ultrasonic bath By allowing it to be preheated, the entire process can be automated in a uniform process, which reduces the soldering time in the ultrasonic bath, and also allows the holding of multiple glass tubes at once, increasing the production per unit time. It is possible to provide a soldering machine for an external electrode fluorescent lamp that enables high-speed cap soldering by allowing a plurality of glass tubes to be positioned by using a jointed-arm robot arm.

In order to achieve the above object, a soldering machine for an external electrode fluorescent lamp according to the present invention includes a supply unit for horizontally moving a glass tube supplied from a hopper by a predetermined length toward the front; A cap assembly unit installed at both ends of the supply unit and coupling the electrode cap of the cap feeder to both ends of the glass tube; A gauging unit installed at the front end of the supply unit and having a plurality of seating grooves formed at a predetermined interval so that the glass tube is stacked at a predetermined interval; An input unit which is installed at an upper portion of the supply unit at a position between the supply unit and the gauging and is provided with a jaw for holding a glass tube to seat the glass tube of the supply unit in a seating groove of the gauging unit; A plurality of preheating units provided with a preheater to preheat the glass tube; A plurality of articulated arms for conveying the preheated glass tube group; A plurality of ultrasonic solder baths in which the glass tube group conveyed by the plurality of articulated arms is vertically received and the ends thereof are soldered; And a discharge unit for transferring the group of glass tubes soldered from the plurality of ultrasonic solder baths to the finished product hopper.

In addition, in the soldering machine for an external electrode fluorescent lamp according to the present invention, the supply unit, the gauging unit, the input unit, and any one of the preheating units are installed in a first mounting mount.

In addition, in the soldering machine for an external electrode fluorescent lamp according to the present invention, the plurality of ultrasonic solder baths and any one of the plurality of preheating units are installed on a second mounting stand.

In addition, in the soldering machine for an external electrode fluorescent lamp according to the present invention, the discharge unit is installed on a third mounting stand.

In addition, in the soldering machine for an external electrode fluorescent lamp according to the present invention, the supply unit further includes a first failure detection sensor for generating a failure detection signal according to the length of the glass tube coupled to the cap.

In addition, in the soldering machine for an external electrode fluorescent lamp according to the present invention, the input unit, the input vertical cylinder; An input tank coupled to a lower end of the input vertical cylinder and provided with a tank for holding a glass tube which is transferred to a supply unit; An injection horizontal cylinder for moving the injection tank to a predetermined position.

In addition, in the soldering machine for external electrode fluorescent lamp according to the present invention, the plurality of arms operate simultaneously to transfer the plurality of glass tubes to different positions.

In addition, in the soldering machine for an external electrode fluorescent lamp according to the present invention, the discharge unit further comprises a second defective detection sensor for generating a defect detection signal by checking the length of the conveyed glass tube.

According to the soldering machine for an external electrode fluorescent lamp of the present invention having the configuration as described above, the soldering can be performed at a high speed by performing a process of capping the glass tube in a consistent process, the first plurality of glass tube is made of multiple joints By allowing the arm and the second arm to be positioned by each process, the overall process execution time can be shortened, and in particular, the glass tube and the cap can be preheated before the glass tube is introduced into the ultrasonic solder bath, thereby the soldering process. The time is shortened and a high speed cap soldering process is realized, thus increasing the yield per unit time.

2 is a plan view showing the overall configuration of the soldering machine for an external electrode fluorescent lamp according to the present invention, Figure 3 is a side view showing the overall configuration of the soldering machine for an external electrode fluorescent lamp according to the invention, as shown The soldering machine for external electrode fluorescent lamp according to the present invention, the supply unit 105, the cap assembly unit 107, the gauging unit 108, the feeding unit 109, the first preheating unit 111, the second preheating And a unit 125, a first ultrasonic solder tank 112, a second ultrasonic solder tank 115, a multi-joint first arm 113, a multi-joint second arm 116, and a discharge unit 117. .

As shown, the first mounting mount 101a of the soldering machine for the external electrode fluorescent lamp according to the present invention has a supply unit 105, a cap assembly unit 107, a gauging unit 108, an input unit 109 , The first preheating unit 111 is installed, the second mounting mount 101b, the first ultrasonic solder tank 112, the first arm 113, the cradle 114, the second ultrasonic solder tank 115, The two arms 116 are installed, and the discharge unit 117 and the finished product hopper 103 are installed in the third mounting mount 101c.

The supply unit 105 is installed on the first mounting mount 101a and is provided with a supply bracket 121 having a V-shaped mounting structure at a predetermined interval. Front and rear transfer robot cylinders and up and down transfer robot cylinders (not shown) are respectively provided at both ends of the supply unit 105, so that the supply unit 105 is driven by four front and rear and up and down transfer robot cylinders. The movement process of the transfer robot cylinder is repeated after the up-and-down transfer robot cylinder moves up and down, and then moves forward and backwards. Then, the transfer robot cylinder back and forth that the up and down transfer robot cylinder descends and moves forward is moved backward and returns to the origin. As a result, the glass tube 104 loaded on the supply bracket 121 having the V-shaped mounting structure is supplied forward.

On the other hand, both ends of the supply unit 105 is provided with a cap assembly unit 107 for coupling the cap for the electrode supplied from the cap feeder 106 to both ends of the glass tube 104, the front supply of the cap assembly unit 107 Both sides of the unit 105 are provided with a first defective detection sensor 122 for generating a defective detection signal along the length of both ends of the glass tube 104, thereby detecting whether the glass tube 104 is defective.

As shown in FIG. 3, an injection unit 109 is installed above the intermediate position of the first mounting stand 101a in the transport direction of the glass tube 104, so that a defect detection signal is output from the first defective detection sensor 122. When generated, the input unit 109 grasps the defective glass tube 104 and discharges it to the first defective detection table (not shown) installed at the top of the supply unit 105.

The feeding unit 109 is a device for separating and transporting the glass tube 104 to the gauging unit 108 or the first defective detection unit installed in front of the supply unit 105, and is installed on the upper portion of the supply unit 105. An injection tank provided with a plurality of jaws operated by an air cylinder to hold the 104 is installed at the lower end of the rod of the injection vertical cylinder 109a. Therefore, when the loading vertical cylinder 109a is operated and the rod is lowered, the feeding tank of the feeding unit 109 grips the glass tube 104, which is then transferred to the gauging unit 108 by the feeding horizontal cylinder (not shown). The feed horizontal cylinder is operated in accordance with the bad detection signal, or the bad glass tube is separated and transferred to the first bad detection zone.

The gauging unit 108 is installed at the front end in the feed direction of the supply unit 105, and the 'V' shaped seating groove 108a so that the overall length of the plurality of glass tubes 104 conveyed by the feeding unit 109 is aligned. ) Are formed as shown in FIG. 3. Therefore, the glass tube 104 supplied to the supply unit 105 is gripped by the feed tank of the feed unit 109 and is seated in the seating groove 108a of the gauging unit 108.

As shown in FIG. 2, the first preheating unit 111 is installed in front of the gauging unit 108 and is provided with a preheating heater 110 at one end thereof so that the glass tube 104 is aligned by the gauging unit 108. ) The first ultrasonic preheating unit 112 by transferring the group to the first preheating unit 111 by the second arm 116, and preheating one end of the glass tube 104 before entering the first ultrasonic soldering tank 112. Allow the soldering process to be performed in a short time.

In the second mounting mount 101b, a first ultrasonic solder tank 112, a first arm 113, a cradle 114, a second ultrasonic solder tank 115, and a second arm 116 are installed. The arm 113 is provided with a plurality of jaws at the front end to grip the group of glass tubes 104 preheated in the first preheating unit 111, and is composed of a multi-joint robot arm (arm). The first arm 113 grasps the glass tube 104 group of the first preheating unit 111 and stands vertically, and then puts it in the first ultrasonic lead bath 112 as shown in FIG. 104 is ultrasonically soldered.

The first arm 113 rotates the glass tube 104 soldered from the first ultrasonic soldering tank 112 to be horizontally seated on the cradle 114 disposed in front of the bar, as shown at one end of the cradle 114. As described above, the second preheating unit 125 is installed to preheat the other end of the glass tube 104 which is not soldered in the first ultrasonic solder bath 112.

On the other hand, the second arm 116 is a multi-arm robot arm (arm), like the first arm 113, and is mounted on the cradle 114 to hold the plurality of glass tubes 104 preheated. A plurality of jaws are installed at the front end as shown in 113, and the glass tube 104 mounted on the holder 114 is moved to the second ultrasonic lead bath 115 so that the other end of the glass tube 104 stands vertically. Then, the other end of the glass tube 104 is introduced into the second ultrasonic lead bath 115 to allow the glass tube 104 and the cap to be soldered.

Here, looking at the operating state of the first arm 113 and the second arm 116, when the first arm 113 to move the glass tube 104 to the holder 114 in the first ultrasonic lead bath 112, The second arm arm 116 simultaneously performs the operation of gripping and transporting the glass tube 104 aligned with the gauging unit 108 to the first preheating unit 111.

Meanwhile, the discharge unit 117 and the finished product hopper 103 are installed in the third mounting mount 101c, and the glass tube 104 soldered in the second ultrasonic solder tank 115 is formed by the second arm 116. It is transferred to the discharge unit 117.

Discharge unit 117 is installed on the third mounting mount 101c, it is provided with a discharge bracket having a V-shaped mounting structure of a predetermined interval. The discharge unit 117 is provided with a front and rear transfer robot cylinder and a vertical transfer robot cylinder (not shown), respectively, on both sides of the discharge unit 117 in the same manner as the supply unit 105, so that the discharge unit 117 has four front and rear, up and down transfer robots. Driven by cylinder. The movement process of the transfer robot cylinder is repeated after the up and down transfer robot cylinder is moved up and down, and then the transfer robot cylinder is moved forward, and then the transfer robot cylinder is moved back and forth. As a result, the glass tube 104 loaded on the discharge bracket having the V-shaped mounting structure can be transferred to the finished product hopper 103.

In addition, the second defective detection sensor 126 is installed at both ends of the discharge unit 117 to check the overall length of the glass tube 104 to be transported and generates a bad detection signal if the reference value is more than or less than.

A discharge vertical cylinder (not shown) is installed vertically on the upper portion of the discharge unit 117, and a discharge tank having a jaw coupled to the tip is provided at the bottom of the rod of the discharge vertical cylinder to hold the glass tube 104. And the defective glass tube 104 is gripped and separated from the discharge unit 117 according to the defective detection signal, and then discharged to the second defective detection stand (not shown). The discharge unit 117 is also input unit 109. Since the structure is the same as), detailed description is omitted.

Next, an operation relationship of the soldering machine for an external electrode fluorescent lamp having the above-described configuration will be described.

As shown in FIG. 2, when the glass tube 104 supplied from the hopper 102 is seated on the supply bracket 121 of the supply unit 105 and transported, the cap feeder 106 installed on both sides of the supply unit 105. The cap for electrodes is guided from both ends of the glass tube 104.

When the cap is fitted to the glass tube 104, a plurality of glass tubes 104 are conveyed forward by the up and down transfer robot cylinder and the front and back transfer robot cylinder of the supply unit 105. Subsequently, when the input tank of the input unit 109 installed on the upper part of the supply unit 105 is lowered by the operation of the input vertical cylinder 109a and the jaw mounted at the tip of the input tank grips the glass tube 104. , The horizontal injection cylinder is operated to transfer the feeding tank to the gauging unit 108 installed at the front end of the supply unit 105, and then mount the glass tube 104 to the seating groove.

Here, the first defective detection sensor 122 installed in the supply unit 105 senses the overall length of the glass tube 104 coupled to the cap to generate a defect detection signal, and the input unit 109 is input according to this signal After holding the defective glass tube 104, the jaw is moved to the first defective detection stand provided in the upper portion of the supply unit 105.

Meanwhile, when a plurality of glass tubes 104 are placed in the seating grooves 108a of the gauging unit 108, the second arm 116 grips all the glass tubes 104 of the gauging unit 108 to be adjacently installed. 1 is transferred to the preheating unit 111 so that one end of the glass tube 104 is preheated by the preheating heater 110.

When one end of the glass tube 104 and the cap are preheated in the first preheating unit 111, the first arm 113 formed of multiple joints grips and lifts the plurality of glass tubes 104 and simultaneously vertically holds the glass tube 104. It is put up in the first ultrasonic lead tank 112 so that one end of the glass tube 104 is soldered together with the cap.

Subsequently, the first arm 113 horizontally moves the soldered glass tube 104 to the cradle 114 installed at the front, and again grips the glass tube 104 of the first preheating unit 111 to make the first ultrasonic solder tank ( The glass tube 104 is introduced into the 112, and when the first arm 113 moves the glass tube 104 from the first ultrasonic soldering tank 112 to the holder 114, the second arm 116 moves to the gauging unit ( When the glass tube 104 of 108 is transferred to the first preheating unit 111, and the first arm 113 grasps the glass tube 104 of the first preheating unit 111 and transfers the glass tube 104 to the first ultrasonic lead bath 112. The second arm 116 grips the glass tube 104 preheated by the second preheating unit 125 in the holder 114 so that the glass tube 104 stands vertically in the second ultrasonic solder bath 115 and is not soldered. Allow the other end to be injected.

When the other end of the glass tube 104 is soldered in the second ultrasonic lead bath 115, the second arm 116 seats the glass tube 104 on the discharge unit 117 and transfers the glass tube 104 to the finished product hopper 103. The second defective detection sensor 126 is installed on both sides of the glass tube 104 to check the total length of the glass tube 104, and generates a defective detection signal according to the detected total length of the glass tube 104. The discharge tank of the discharge vertical cylinder installed at the upper portion of the 117 grips the defective glass tube 104 and separates the glass tube 104 from the discharge unit 117 to the second defective detection unit installed at the upper portion of the discharge unit 117.

Subsequently, the glass tube 104 which is not separated by the discharge tank is transferred to the finished hopper 103, thereby allowing the cap to be ultrasonically soldered to both ends of the glass tube 104.

1 is a conceptual diagram of a soldering machine for a conventional external electrode fluorescent lamp.

2 is a plan view of a soldering machine for an external electrode fluorescent lamp according to the present invention.

3 is a side view of a soldering machine for an external electrode fluorescent lamp according to the present invention.

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

102: hopper 104: glass tube

105: supply unit 106: cap feeder

107: cap assembly unit 108: gauging unit

109: input unit 110: preheating heater

111: first preheating unit 112: first ultrasonic solder bath

113: first arm 114: holder

115: second ultrasonic wave bath 116: second arm

117: discharge unit 121: supply bracket

122: first defective detection sensor 124: input tank

125: second preheating unit 126: second defective detection sensor

Claims (8)

A feeding unit having a first defective detection sensor for horizontally transferring the glass tube supplied from the hopper toward a front by a predetermined length and generating a defective detection signal according to the length of the glass tube to which the cap is coupled; A cap assembly unit installed at both ends of the supply unit and coupling the electrode cap of the cap feeder to both ends of the glass tube; A gauging unit installed at the front end of the supply unit and having a plurality of seating grooves formed at a predetermined interval so that the glass tube is stacked at a predetermined interval; An input unit which is installed at an upper portion of the supply unit at a position between the supply unit and the gauging unit, and is provided with a jaw for holding a glass tube to seat the glass tube of the supply unit in a seating groove of the gauging unit; A plurality of preheating units provided with a preheater to preheat the glass tube; A plurality of articulated arms for conveying the preheated glass tube group, the simultaneous operation to convey the plurality of glass tubes to different positions; A plurality of ultrasonic solder baths in which the glass tube group conveyed by the plurality of articulated arms is vertically received and the ends thereof are soldered; Cap soldering machine for an external electrode fluorescent lamp comprising a discharge unit for transferring the glass tube group soldered in the plurality of ultrasonic solder bath to the finished product hopper. The method of claim 1, The pre-heating unit of any one of the supply unit, the gauging unit, the input unit and the plurality of preheating units is installed on a first mounting mount, cap soldering machine for an external electrode fluorescent lamp. The method of claim 1, And the plurality of ultrasonic solder baths and any one of the plurality of preheating units are installed on a second mounting stand. The method of claim 1, The discharge unit is cap soldering machine for an external electrode fluorescent lamp, characterized in that installed on the third mounting mount. delete The method of claim 1, The input unit, An input vertical cylinder; An input tank coupled to a lower end of the input vertical cylinder and provided with a tank for holding a glass tube of a supply unit; Capping soldering machine for an external electrode fluorescent lamp, characterized in that it comprises an injection horizontal cylinder for moving the input tank to a predetermined position. delete The method of claim 1, The discharge unit is cap soldering machine for an external electrode fluorescent lamp characterized in that it further comprises a second failure detection sensor for generating a bad detection signal by checking the length of the conveyed glass tube.

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