KR830002753B1 - Welding method of fluorescent lamp connecting pin - Google Patents

Abstract

No content.

Description

Welding method of fluorescent lamp connecting pin

1 is a plan view of a welding device for connecting pins according to the present invention.

2 is a cross-sectional view of the electrode holder.

3 is a circuit diagram of a switching control device.

4 is a diagram showing the switching operation of the welding apparatus of FIG.

The present invention relates to a welding method of a fluorescent lamp connecting pin.

In general, a welding device for welding a fluorescent lamp connecting pin and a lead wire inserted into the connecting pin, wherein a pair of connecting pins of a fluorescent lamp are moved with parallax by a transfer device to reach a predetermined position (welding position). A pair of capacitor discharge arc welding electrodes are used for welding. However, by repeating the pin welding, the tip of the welding electrode is damaged by the welding sputter or the arc, and deformed to obtain a good welding, and the welding must be stopped to clean and reshape the welding electrode.

For this reason, not only the operation rate of a connection pin welding apparatus falls remarkably, but also the bad effect also brought about to other apparatuses connected to this apparatus.

SUMMARY OF THE INVENTION An object of the present invention is to provide a welding method and a device in which arc welding is continuously performed by a connecting pin welding device, and the exchange for repair and repair of the welding electrode is easy. The welding method of a fluorescent lamp connecting pin according to the present invention is characterized by a first normal operation stroke in which one pair of electrodes of two pairs of electrodes arranged in parallel with each other, a second operation stroke in which another pair of electrodes operate, and a first normal It consists of a 1st switching operation stroke which switches from a driving administration to this 2nd normal operation stroke, and a 2nd operation stroke which switches from a 2nd normal operation stroke to a 1st normal operation stroke.

The welding device of the fluorescent lamp connecting pin according to the present invention is characterized by two pairs of electrode holders arranged at predetermined intervals along the moving direction of the fluorescent lamp and supported to be detached, and a first electrode connected to the supported welding electrodes. A switching device, a second switching device connected to a welding electrode supported by the other pair of electrode holders, and a switching control device connected to the first and second switching devices. The switching operation of the first and second switching devices is performed with a time difference with respect to the moving speed of the fluorescent lamp.

Hereinafter, with reference to the drawings will be described in the embodiment of the welding apparatus for performing the welding method of the detention pin according to the present invention.

1 shows an embodiment of a welding apparatus according to the present invention. The welding apparatus 1 comprises two pairs of electrode holders 2a, 2b, and 2c, 2d horizontally arranged at predetermined intervals, and welding electrodes 4a, 4b supported by the electrode holders 2a, 2b. ) Is electrically connected to the first switching device, i.e. relay (5) (5a), electrically connected to the welding electrodes 4 (4c and 4d) supported by the electrode holders (2c and 2d). And a switching control device 6 which is connected to the second switching relay 5 (5b) and the switching relays ((5) and (5b)) to perform the switching operation of the switching relay.

The distance between the electrode holders [2a and (2b)] and the distance between [(2c) and (2d)] are the moving distances of the fluorescent tubes moved with parallax, that is, the distance between adjacent fluorescent tubes (W) and the fluorescent plate It is equal to the sum of the spacing w between the pair of connecting pins Pl and Pr at the tip (that is, W + w), and the spacing between the electrode holders 2b and 2b and 2c is equal to (W-w). A pair of the detention pins Pl and Pr can be welded by using one of the electrode holders of each pair, i.e., (4a) and (4d) or (4b) and (4c).

The electrode holders 2a to 2d are attached in parallel to the mounting plate 13 extending in the advancing direction of the fluorescent tube horizontally to the base 11 via the support 12.

2, each of the electrode holders 2 is inclined to the insertion opening 23 for inserting welding electrodes fixed to an attachment plate 13 made of an insulating member 21 and penetrating the center in the axial direction. The colletuxk member 22 which has the head 25 in which the surface 24 was formed is provided.

In the head 25 portion of the creep chuck member 22, slots 26 extending in the axial direction are formed at equal intervals in a plurality of circumferential directions.

A fixing ring 30 having an inclined inner surface 31 engaged with the inclined outer surface 24 is provided on the outside of the head 25, and an insulating ring 32 is fixed to the rear of the fixed ring. A compression spring 33 is provided between the insulating ring 32 and the rear surface of the head to compress the insulating ring and the retaining ring 30 backward with respect to the collet chuck member. Therefore, the polytuck member may fix the welding electrode 4 by the action of the inclined inner surface of the fixing ring 30.

By rotating the anti-rotate holder 34, which is rotationally fixed at the time 11, to compress the insulating ring toward the end 35, the fixing ring 30 can be separated from the head to extract the welding electrode.

The switching relay 5 has a structure in which an electrically operated power supply is connected to an arbitrary welding electrode. In FIG. 3, the switching control device 6 includes the first and second storage devices 61 and 62, the electric selection switch 63, and a safety circuit, i.e. an interlock and a circuit 64, which are exclusive OR circuits. ), AND 65, and the like. In this switching control device, the switching relay [(5a) or (5b) is used for welding power source E ₁ and (E ₂ ), respectively, for welding electrodes [(4a) or (4b) and (4c) or (4d). ] And the switching relay 5a is controlled by the first storage device 61. The signal of "0" or "1" is input to the raised device 5b by the national selection switch 63. The second memory 62 has a built-in shift register so that whenever a pulse corresponding to the parallax shift of the fluorescent tube is input to the terminal 66, the memory is shifted by a predetermined number of times (two times in this embodiment) and then switched. The control signal is output to the relay 5b. That is, the second memory device controls the switching relay 5b by delaying the output of the first memory device. After the selection switch 63 is adjusted, the switching relays 5a and 5b are automatically controlled (sequential control) by the first and second storage devices, but the selection switch 63 is incorrectly adjusted. In this case, the installed interlock circuit (the interlock circuit does not execute the wrong command by the safety circuit 64 for determining whether the combination of the electrodes is in a normal state, so that the relays 5a and 5b have a predetermined value). It works as program.

When the interlock circuit 64 operates (with the switching relays 5a and 5b not switched), the AND circuit 65 inputs the pulse from the terminal 66 to the storage device 61. .

Therefore, the switching relays 5a and 5b are controlled in synchronization with the timing of the pulses input from the terminal 66. In addition, when the fluorescent lamp conveyance conveys lags, the above synchronous pulse is applied to the terminal 66. Next, the operation sequence of the welding apparatus will be described.

Initially, the selection switch 63 is set to the first selection state so that the welding electrodes 4a and 4d are in the normal operation state and the welding electrodes 4b and 4c are in the resting state. In the case of checking and repairing the welding electrodes 4a and 4d, if the selector switch 63 is set to (0), the selector switch 63 synchronized with the pulse from the terminal 66 in the above state. When a signal is input to the first storage device 61, the storage device 61 is outputted to the switching relay 5a and the second storage device 62, so that the switching relay 5a is immediately switched and the relay 5b. ), The signal is delayed by three steps via the memory politics 62, and then switched to operate the welding electrodes 4b and 4c.

Thus, if the switching operation between two pairs of welding electrodes 4a, 4b, 4c, and 4d is symbolically displayed, it is as shown in FIG.

In the figure (0) indicates that the connecting pin of each electrode is not welded, (10) indicates that one side Pr of the connecting pin is welded, and (11) the other side (Pl) of the connecting pin. Indicates that it is welded. That is, since the _{n of} stage is the first normal operating state and the electrodes 4a and 4d operate, the connecting pin Pl is welded by the welding electrode 4a and Pr is welded by the welding electrode 4d. .

sf ₁ dan from sf ₃ stages, and switching operating states of the first and also the power is switched welding electrode doemeurosseo selection switch is switched from sf ₁ dan [(4a), (4d) ] The switching operation of the first start, but sf _{At 2} , the switching relay 5b is not switched yet since the operation is delayed.

The relay 5b, which has been delayed by the memory device 62 in the sf ₃ stage and is not switched, is switched at this stage to complete the first switching operation. From this stage, the welding electrodes [4b, 4c] are brought into the second normal operation state in which the connecting pins [Pl, Pr] are welded.

In the _first stage of Os, this step may be performed by removing the welding electrodes 4a and 4d which are in the second normal operation state in which the welding electrodes 4b and 4c operate and are initially operated. This second steady state is continued to any Os _n stage until the electrode needs to be repaired as the first one. From Ss ₁ dan Ss ₃ stages described above By restoring the selection switch 63 in the Ss ₁ as the switching order of the second restoring to the operation of the welding electrode (4b), (4c) from (4a), (4d) the operation of the inverse switching sequence haenghayeojyeo its switching operation in Ss ₃ dan is completed. Therefore, after that, the welding electrodes 4b and 4c will be at rest and repaired.

In the execution step of the sequence as described above, the connecting pins Pr and Pl are certainly welded without overlapping. That is, in FIG. 4, the fluorescent lamp is opposed to the sequential electrodes 4a (b), (4c) and (4d) through each moving step, that is, passes through the welding stroke as shown by the arrow (X). In sf ₁ , it is apparent that the welding of the (Pl) 11 and the (Pr) 10 is completed and not welded thereafter. The arrow Y indicates the stroke in the second steady state, but also in this case, accurate welding is performed. Further, even if the selection switch 63 is operated during the execution of the first and second switching operations, the instruction is not executed by the interlock circuit until the order is completed.

As described above, in the welding apparatus according to the present invention, not only can the welding electrode be continuously repaired, but also there is an effect that safety can be ensured against malfunction of the switching selector switch.

The spacing of the welding electrodes may be, for example, between the welding electrodes 4a and 4b and between 4c and 4d as W-w, and between 4b and W + w as well as fluorescence. You can also filter out one coffin.

Claims (1)

In the welding method of fluorescent lamp connecting pins, in which a welding electrode 4 is connected to a pair of connecting pins protruding at an end of a fluorescent lamp to weld the connecting pin and a lead wire inserted into the connecting pin, two pairs of welding electrodes 4 are provided. When a pair of welding electrodes are connected in series according to the moving direction of the fluorescent lamp, and each pair of welding electrodes is connected to the welding power supply through each of the switching devices 5, a welding current is supplied to one of the pair of welding electrodes. The supply of welding current is stopped to the other pair of welding electrodes, and conversely, when the welding current is supplied to the other pair of welding electrodes, the supply of welding current to one pair of welding electrodes is stopped. The method of welding a fluorescent lamp connection pin, characterized in that the two switching devices (5) are operated with a parallax in relation to the moving speed of the fluorescent lamp when the welding current is switched.

Images