KR100727705B1 - Automatic welding apparatus - Google Patents

Abstract

The automatic welding gun apparatus according to the present invention is a welding gun and a bracket coupled to the welding gun to support the welding gun, a rotating base coupled to the bracket to support the bracket, and a rotating base coupled to the rotating base. A rotating shaft means for rotating, a lower base supporting the rotating shaft means in combination with the rotating shaft means, driving means for transmitting a driving force to rotate the rotating base, and a stopper for limiting rotation of the rotating base. (stopper), the welding gun is rotated at the same time by the rotation of the rotary base to allow the two welding guns to work simultaneously in a narrow place, such as fuel filler housing openings, without mutual interference, up to 12 seconds according to the prior art Allows you to take up to six seconds of work, giving you the benefit of saving time There is an advantage that the structure of the facility is simplified and easy to maintain.

Auto Welding Gun, Spot Welding, Side Outer Panel, Fuel Filler Housing

Description

Automatic welding apparatus {Automatic welding apparatus}

1 is a combined front view of a side outer panel and a fuel filler housing;

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

3 is a structural diagram of an automatic welding gun (APSW) according to the prior art,

4a is a structural diagram of a multi-automatic welding gun according to the present invention;

4B is a cross-sectional view taken along the line B-B in FIG. 4;

5 is a structural diagram of a welding gun head portion;

6 is a second embodiment of the present invention;

7 and 8 are state diagrams during operation by the multi-automatic welding gun according to the invention in the fuel filler housing opening.

<Explanation of symbols on main parts of the drawings>

101: first welding gun 102: second welding gun

103: rotating body 104: rotating base

105: drive device 106: first stopper

107: second stopper 108: first bracket

109: second bracket 110: lower base

111: rotating body housing SOP: side outer panel

FFH: Fuel filler housing 201: Lower tip

202: top tip 303: rack

304: Pinion

The present invention relates to an automatic welding gun apparatus, and more particularly, to a multi-automatic welding gun apparatus and a method of using the same, which can shorten the working time and simplify the system by allowing two or more welding guns to simultaneously perform work in a limited workspace. will be.

In general, since about 90% of the body body welding is spot welding and about 3,500 points are welded per vehicle, the effect of shortening the working time of the spot welding process on production is huge.

In particular, in welding the fuel filler housing and the side outer panel of the vehicle body structure, the weld section has a "L" shaped cross section, which makes spot welding work difficult by the robot and takes a long time. In order to overcome this difficulty, a spot welding is performed by configuring a separate Auto Portable Spot Welder (APSW) in a jig.

1 is a structural diagram of the coupling of the side outer panel and the fuel filler housing, Figure 2 is a cross-sectional view taken along the line A-A of Figure 1, Figure 3 is a conventional automatic welding gun (APSW) structural diagram.

The conventional automatic welding gun (APSW) according to FIG. 3 uses two welding devices composed of an air cylinder, a block unit, and a gun unit, but the block unit of the first welding device has four directions. And the block unit of the second welding device is configured to slide in two directions.

That is, for welding the two spots of the “a” part of FIG. 1, the gun unit 1 of the first welding device rotates while avoiding the gun unit 4 of the second welding device, and the block unit 2 moves the air cylinder. In (3), the vehicle is slid into the interference avoidance section. Thereafter, the gun unit 4 of the second welding device is rotated to perform the “gap” secondary primary spot welding, and the block unit 5 is slid by the air cylinder 6 to the secondary spot welding position, and then the gun unit (4) perform the "secondary" part secondary spot welding.

The gun unit 1 is rotated for welding two spots of the " b " part, and the block unit 5 is slid into the interference avoidance section by the air cylinder. Then, after the block unit 2 slides to the primary spot position by the air cylinder 3 of the first welding device, the gun unit 1 is rotated to perform the “b” secondary primary spot welding, and then the block unit (2) It slides to the "b" part secondary spot position, and it welds by the gun unit 1, and returns to an original position.

In case of controlling the automatic welding gun (APSW) configured as described above with a program such as a programmable logic controller (PLC), there is a problem of malfunction due to complicated system control, and a separate welding jig is produced and an unnecessary area is required. Due to the complexity of the equipment (APSW), frequent breakdowns occur and flexible body line formation is difficult. In addition, due to the narrowing of the fuel filler housing opening and the interference of the gun unit between the two welding apparatuses, simultaneous welding is not possible, which results in a long working time.

The present invention was created to solve the above-mentioned problems of the prior art, which allows two welding guns to be operated at the same time in a narrow place such as a fuel filler housing opening, thereby shortening the working time, simplifying the installation structure, and making maintenance easy. The purpose is to provide an economical multi-automatic welding gun device.

The structure of the multi-automatic welding gun apparatus according to the present invention for solving the above problems is a welding gun, a bracket coupled to the welding gun to support the welding gun, and a rotating base coupled to the bracket to support the bracket And a rotating shaft means coupled to the rotating base to rotate the rotating base, a lower base coupled to the rotating shaft means to support the rotating shaft means, and a driving means to transmit a driving force to rotate the rotating base. And a stopper for limiting the rotation of the rotating base, wherein the rotating shaft means is a rotating center of the rotating base so that the rotating base can be rotated and prevents play between the rotating bodies. Rotor body housing, characterized in that consisting of.

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

4 is a structural diagram of a multi-automatic welding gun apparatus according to the present invention, Figure 4b is a cross-sectional view of the BB line direction of Figure 4, Figure 5 is a structural diagram of a silver welding gun head portion, Figure 6 is a second embodiment of the present invention Yes.

The first bracket 108 and the second bracket 109 are coupled to and supported by the first welding gun 101 and the second welding gun for spot welding, respectively, and the first bracket 108 and the second bracket 109 are supported. Are respectively coupled to and supported by the rotating base 104, and the rotating shaft means 103 and 111 are coupled to the lower portion of the rotating base 104 so that the rotating base 104 can be rotated, and the rotating shaft means 103 and 111 are It is coupled to the lower base 110 for supporting the rotating shaft means, the driving means 105 for transmitting a driving force to the rotary base 104 is rotated, the rotary base 104 is coupled, The upper portion of the 104 is provided with stoppers (106, 107) for limiting the rotation of the rotary base (104).

The first and second welding guns 101 and 102 may have a structure in which two welding guns face each other and face each other in opposite directions.

The rotary shaft means (103, 111) may be composed of a rotary shaft 103 to be rotated to become the center of rotation of the rotary base, and a rotating housing 111 to prevent the play of the rotary shaft 103.

The rotor housing 111 may be configured of an oilless bush and a washer to prevent play.

The driving means 105 may be configured as an electric motor such as a servo motor or a geared motor, and may be configured as a hydraulic or pneumatic device such as an air cylinder.

The stoppers 106 and 107 are composed of a first stopper 106 and a second stopper 107 and protrude above the lower base to meet the one end of the rotating base when the rotating base 104 rotates, thereby rotating the rotating base 104. Restriction regulates the exact position of the rotating base 104.

The head portion of the first and second welding guns (101, 102) according to Figure 5, may be composed of an upper tip 202 and the lower tip 201, when the lower tip 201 is advanced the upper tip 202 When the lower tip 201 rotates toward the lower tip 201 and the lower tip 201 reverses, the upper tip 202 may be configured as a link structure that rotates to the opposite side of the lower tip 201.

In addition, the rotary shaft means (103, 111) may be composed of a rack 303 and the pinion structure 304 as shown in FIG.

Looking at the operation of the present invention configured as described above are as follows.

7 and 8 are state diagrams during operation by the multi-automatic welding gun according to the invention in the fuel filler housing opening.

When the side outer panel and the fuel filler housing are set in the multi-auto welding apparatus configured in the separate jig and the trolley, the driving unit 105 advances and rotates the rotary base 104 to the first stopper 106 position. After the rotation completion signal, as shown in FIG. 3, the first welding gun 101 performs the "primary" part primary spot welding, and the second welding gun 102 performs the "na" part primary spot welding.

After the primary welding completion signal, the drive unit 105 reverses and rotates the rotary base 104 to the second stopper 107 position. After the rotation completion signal, as shown in Fig. 5, the first welding gun 101 performs the "secondary" secondary spot welding and the second welding gun 102 performs the "na" secondary secondary spot welding.

The automatic gun apparatus according to the present invention has a welding gun and a bracket coupled to the welding gun to support the welding gun, a rotating base coupled to the bracket to support the bracket, and a rotating base coupled to the rotating base. A rotating shaft means for rotating, a lower base supporting the rotating shaft means in combination with the rotating shaft means, driving means for transmitting a driving force to rotate the rotating base, and a stopper for limiting rotation of the rotating base. (stopper), the welding gun is rotated at the same time by the rotation of the rotary base to allow the welding gun to work simultaneously in a narrow place, such as fuel filler housing openings, without the mutual interference, up to 12 seconds according to the prior art Allows you to work in up to six seconds, giving you the benefit of saving time There is an advantage that the structure of the facility is simplified and easy to maintain.

Claims (7)

In the automatic welding gun device for performing spot welding during automobile assembly process, Welding gun; A bracket coupled to the welding gun to support the welding gun; A rotating base coupled to the bracket to support the bracket; Rotating shaft means coupled to the rotating base to rotate the rotating base; A lower base coupled to the rotating shaft means to support the rotating shaft means; Driving means for transmitting a driving force so that the rotating base can be rotated; A stopper for limiting rotation of the rotating base; Consisting of, The rotating shaft means is a rotation center of the rotating base to rotate the rotating base and the rotating body housing to prevent the play of the rotating body, the automatic welding drying apparatus characterized in that consisting of. The method according to claim 1, The welding gun is an automatic welding gun device characterized in that the two welding guns are configured in a structure facing each other facing the opposite direction. delete The method according to claim 1, The rotary housing is an automatic welding gun device, characterized in that consisting of oil-less bush and washer. The method according to claim 1, The driving means is an automatic welding gun, characterized in that consisting of a motor or air cylinder. The method according to claim 1, The stopper is protruded on the upper base, the automatic welding gun device, characterized in that configured to meet with one side end of the rotating base during the rotation of the rotating base. The method according to claim 1, The rotary shaft means automatic welding gun, characterized in that consisting of a rack and pinion structure.

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