KR100628359B1 - horizontal holding check type manual welding gun - Google Patents

Abstract

The present invention relates to a horizontal maintenance check type manual welding gun, when the workpiece is positioned between the welding tip, when the exact horizontal state of the welding gun is not established, the current is cut off and the correct right angle state between the welding tip and the workpiece while fundamentally preventing welding failure. The purpose is to improve the convenience of work by allowing the operator to check directly.

In order to achieve the above object, the present invention provides a grip body (1) and a connecting member to rotate relative to the grip body (1) to enable the operator to operate the trigger (2) to power the power during welding operation Maintain the horizontal state of the gun body (4) and the gun body (4) for welding the workpiece (W) using the welding tip (5, 5 ') of the + /-pole that the power is energized while being mounted via (3) It is characterized in that it consists of a horizontal confirmation means (6) for forming a power supply circuit so that power supply is made according to the operation of the trigger (2) only at the time.

Description

Horizontal holding check type manual welding gun

1 is a block diagram of a horizontal maintenance check type manual welding gun according to the present invention

2 is a block diagram for checking the horizontal maintenance according to the present invention

Figure 3 is a non-horizontal state of the welding gun according to the invention

Figure 4 is a welding position failure state by the non-horizontal maintenance state of the welding gun according to the invention

5 is a welding position coincidence state by the horizontal maintenance state of the welding gun according to the present invention

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

1: grip body 2: trigger

3: connecting member 4: gun body

5,5 ': Welding tip 6: Horizontal check means

7: ball case 7a: moving ball

8,8 ': Support block 9,9': Ground pin

10,10 ': Spring 11,11': Ground terminal

12,12 ', 12 ", 13,13': wire

14: contact switch 15: mode button

16: power supply means

W: Walk

The present invention relates to a manual welding gun, and more particularly to a leveling confirmation type manual welding gun that prevents welding when the horizontal state is not maintained.

In general, in automobile assembly, the welding process occupies a very high proportion, and arc welding, resistance welding, and gas welding are generally used. Among them, spot welding, which is one of resistance welding methods, is thermally deformed to a panel forming a vehicle body. This method is to obtain the required welding strength while minimizing the

Such spot welding is a method of joining contact parts between workpieces by flowing a large current in a short time while pressing and inserting a welded object between electrodes of copper or copper alloy, which is short in welding time, suitable for high speed line, and relatively short in running cost. It is most widely used because of the small generation of deformation due to heating, and does not require working skill and relatively simple automation.

Among the welding guns used for spot welding, the portable welding gun, which is operated by a small and manual operation so that the worker can carry it, has to place the workpiece to be welded between the welding tips as electrodes. By operating the trigger, the power is energized to perform welding.

However, in the spot welding work using the welding gun, the accuracy of the welding position is particularly important, but the structure of the welding gun is to be welded on the upper and lower parts of the work after positioning the work so that the right angle between the work and the welding tip is correct. Since the welding is made in the correct position only if this is done, if the welding is performed in a state where the right angle between the workpiece and the welding tip is not made, the inconvenience of only performing additional work while harming the aesthetics of the exterior due to the poor welding position. This will be.

In addition, such a welding gun requires excessive concentration of the operator in order to ensure the accuracy of the welding position, which causes the fatigue of the welding operation.

Therefore, the present invention has been invented in view of the above, and when the workpiece is positioned between the welding tips, the correct right angle between the welding tip and the workpiece while blocking the current when the welding gun is not established, fundamentally preventing welding defects The purpose is to improve the convenience of work by allowing the operator to check the status directly.

In order to achieve the above object, the present invention provides a grip body capable of operating a trigger for energizing power during welding, and a power supply being energized while being mounted via a connection member so as to rotate relative to the grip body. Gun body welding the work using the welding tip of the pole and the horizontal body means of forming the power supply circuit so that the power is energized according to the operation of the trigger only when maintaining the horizontal state of the gun body,
The horizontal checking means includes a ball case having a moving ball which is moved to the inclined side according to the degree of inclination of the gun body so that the operator can easily check with the naked eye;
In the form of a tee (T) to move while compressing the spring by the spring force embedded in the support block provided in the gun body to fix both sides of the ball case and the moving ball moved toward the inclined portion in accordance with the inclination of the gun body A contact means comprising a grounding pin and a grounding terminal disposed at an end of the ball case, the contact being separated according to the movement of the grounding pin to turn off the power circuit;
Power supply means for energizing the power to the welding tip during the On operation of the trigger through the contact switch that maintains the energization state of the power supply only when the moving ball maintains the contact state between the ground pin of the contact means and the ground terminal. And;
The contact switch of the power supply means which is connected to the pair of ground terminals constituting the contact means, the wire leading to the contact switch of the power supply means through a trigger, and the pair of ground pins constituting the contact means are supplied with power Wiring means for forming a power supply circuit with wires leading to the wire;
Characterized in that consisting of.

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Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows a block diagram of a horizontal maintenance check type manual welding gun according to the present invention, the present invention is a grip body (1) and the grip to be able to operate the trigger (2) to power the power supply during welding Gun body (4) for welding the workpiece (W) using the + /-pole welding tips (5, 5 ') of the power supply while being mounted via the connecting member (3) so as to rotate relative to the body (1) and It consists of a horizontal check means (6) for forming a power supply circuit so that the power supply is energized according to the operation of the trigger (2) only when the horizontal state of the gun body (4).

Here, the horizontal confirmation means (6) is made of a transparent material toward the upper side of the gun body (4) so that the operator can easily check with the naked eye as shown in Figure 2 (moving the ball inclined inwards depending on the degree of inclination ( In the ball case 7 having the built-in 7a, the support blocks 8 and 8 'provided in the gun body 4 to fix both sides of the ball case 7, and the support blocks 8 and 8'. Built-in contact means for turning on / off the power circuit according to whether the movable ball 7a is in contact, and power supply when the trigger 2 is turned on according to the on / off state of the contact means. Power supply means for energizing or blocking the current to the welding tips 5 and 5 'and between the contact means and the trigger 2 and the power supply means for supplying power to the welding tips 5 and 5'. It consists of a wiring means for connecting.

The contact means includes a spring (10, 10 ') embedded in the support block (8, 8') and the spring (pressure) of the moving ball (7a) is moved toward the inclined portion in accordance with the inclination of the gun body (4) Ground pins 9 and 9 'having a T-shape and a ground terminal 11 and 11 in which contact is separated according to the movement of the ground pins 9 and 9' so as to move while compressing 10 and 10 '. ')

Here, the ground pins (9, 9 ') is a spring (10) embedded in the support block (8, 8') while the pointed portion formed in the shape of the tee (T) protrudes into the ball case (7) 10 ').

In addition, the ground terminals 11 and 11 'support blocks 8 and 8 so as to maintain contact with the wide portions of the ground pins 9 and 9' in the initial state under the pressing force by the springs 10 and 10 '. ') Is installed at the end of the ball case (7) inserted into.

In addition, the power supply means when the movable ball (7a) is in contact with the ground pin (9, 9 ') and the ground terminal (11, 11') of the contact means according to the horizontal state of the gun body (4) In order to maintain the energized state with the power supply only, the contact switch 14 which is turned on during the operation of the trigger 2 and the contact switch 14 are forcibly turned off to operate the trigger 2. It is made of a mode button 15 so that the power is not supplied even when.

At this time, the mode button 15 is detached from the contact switch 14 by pressing it once, and then pressed again in the pressed state to protrude upwards to connect the contact switch 14, and such an operation is typically performed. As it is achieved using a spring or the like, detailed description is omitted.

In addition, the power supply circuit of the wiring means connects a pair of ground terminals 11 and 11 'constituting the contact means to connect the wires 12, which are connected to the contact switch 14 of the power supply means through the trigger 2, 12 ', 12 "and a pair of grounding pins 9, 9' forming the contact means, and the wires 13, 13 'leading to the contact switch 14 of the power supply means to which power is supplied. Will be done.

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

The present invention does not press the mode button 15 provided in the welding gun when the welding work of the workpiece (W) in the state in which the contact switch 14 is connected, when maintaining the horizontal state between the welding gun and the workpiece (W) is not made This prevents the power supply from being made, thereby preventing the welding defect. That is, the gun body 4 of the welding gun is inclined to one side as shown in FIG. 3 (a) and (b). The moving ball 7a constituting the horizontal checking means 6 provided in (4) is moved in the inclined direction, thereby pushing the ground pins 9 and 9 'of the contact means to the ground terminals 11 and 11'. Even when the trigger (2) is operated to fall apart from the power supply through the contact switch 14 of the power supply means is not made, the welding operation is not performed.

That is, when the horizontal confirmation means 6 of the welding gun is inclined to one side as shown in Figs. 3A and 3B, the workpiece W is the gun body as shown in Figs. 4A and 4B. The gun body 4 is also inclined as much as the inclination between the welding tips 5 and 5 'of (4), so that a weld is separated from the welding point that should be formed on the workpiece W, thereby inhibiting welding failure or aesthetics. do.

However, the horizontal check means 6 mounted on the gun body 4 of the welding gun prevents mismatch between the welding portion and the welding point as described above, that is, as shown in FIG. 5, the workpiece W is the gun body 4. The moving ball 7a is leveled through the transparent ball case 7 of the horizontal checking means 6 mounted on the upper portion of the gun body 4 in a state where the welding tip 5, 5 'is horizontal. It will check if it is located.

This means that when the moving ball 7a is operated on the center of the ball case 7, the trigger 2 is operated, as shown in FIG. 2, the contact terminals provided on both sides of the ball case 7. As the contact state between the ground pins 9 and 9 'and the ground terminals 11 and 11' is maintained, welding is performed between the contact terminal, the trigger 2 and the power supply means through a wiring means connected to a power circuit. Power is supplied to the tips 5, 5 'to weld the workpiece W.

That is, the contact switch 14 of the power supply means forms a state in which power is supplied to the wire 13 connecting the ground pins 9 and 9 'via the wire 13' of the wiring means. At the same time, a trigger 2 connected to a wire 12 'connected to the wire 12 of the wiring means for connecting the ground terminals 11 and 11' is connected to the contact switch 14 with a wire 12 ". Since the state is connected through the operation of the trigger (2) On (On) so that the power is supplied to the welding tip (5, 5 ') of the gun body 4 through the contact switch 14 of the power supply means do.

Accordingly, the workpiece (W) located in the gun body (4) of the welding gun is welded through the welding tips (5, 5 '), wherein the weld of the workpiece (W) as shown in Figure 5 the workpiece (W) It is formed precisely at the point coinciding with the welding point of) to prevent welding defects or impair the appearance.

As described above, according to the present invention, the operator can visually check the horizontal state of the welding gun in the welding gun, so that the accuracy of the welding work is achieved and the power is not energized when the welding gun and the workpiece are not horizontal. There is an effect of preventing the welding failure and thereby inhibiting the appearance of the work.

Claims (6)

+/- that the power is energized while being equipped with a grip body (1) capable of operating a trigger (2) which energizes power during welding, and a connecting member (3) so as to rotate about the grip body (1). The power supply according to the operation of the trigger 2 is performed only when the gun body 4 for welding the workpiece W using the welding tips 5 and 5 'of the pole and the state of the gun body 4 remain horizontal. It consists of a horizontal check means (6) to form a power circuit, The horizontal check means (6) and the ball case (7) containing a moving ball (7a) is moved to the inclined side according to the degree of inclination of the gun body (4) so that the operator can easily check with the naked eye; Springs 10 and 10 'embedded in the support blocks 8 and 8' provided in the gun body 4 to fix both sides of the ball case 7 and the inclined portion according to the inclination of the gun body 4 Ground pins (9, 9 ') made of a tee (T) shape and the end of the ball case (7) to be moved while compressing the spring (10, 10') by the pressing force of the moving ball (7a) to move toward A contact means composed of a ground terminal (11, 11 ') to turn off the power circuit by separating the contact according to the movement of the ground pin (9, 9'); Through the contact switch 14 which maintains the energized state with the power supply only when the movable ball 7a maintains the contact state between the ground pins 9, 9 'of the contact means and the ground terminals 11, 11', Power supply means for energizing the power supply toward the welding tips 5 and 5 'during the on operation of the trigger 2; Wires 12, 12 'and 12 "connected to a pair of ground terminals 11 and 11' constituting the contact means and connected to the contact switch 14 of the power supply means through the trigger 2; Wiring means for connecting a pair of ground pins (9, 9 ') forming a contact means to form a power circuit with wires (13, 13') leading to the contact switch 14 of the power supply means for supplying power; Leveling check type manual welding gun, characterized in that consisting of. The horizontal maintenance check type manual welding gun according to claim 1, wherein the ball case (7) is made of a transparent material so that an operator can visually recognize the position of the moving ball (7a). delete delete 2. The power supply means according to claim 1, characterized in that the power supply means is provided with a mode button 15 protruding toward the grip body 1 to forcibly turn on and off the contact switch 14. Leveling check type manual welding gun. delete

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