JP4086997B2 - Welding machine mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a welding machine mounting apparatus that is equipped with a plurality of welding machines (including equipment such as a pail pack) and moves following an automatic welding apparatus that welds and travels on a workpiece.
[0002]
[Prior art]
Conventionally, as the above-described welding machine mounting device, for example, a single rail laid on a foundation in a substantially straight line is provided, and one leg that runs on this rail and a base runs along the rail. The other leg is provided with a self-propelled carriage equipped with a welding machine mounting table that is installed between the two legs and mounts a plurality of welding machines.
[0003]
[Problems to be solved by the invention]
However, in the above-described welding machine mounting apparatus, by laying only one rail on the foundation, it is possible to reduce the equipment cost and to suppress the risk of hitting the rail. However, when the carriage is running, the carriage moves while dragging the ground wires of the multiple welders mounted on the welding machine mounting table, so the ground wire may get caught on the workpiece or the operator may hit the ground wire. It has been a conventional problem to solve this problem.
[0004]
OBJECT OF THE INVENTION
The present invention has been made paying attention to the above-described conventional problems, and an object thereof is to provide a welding machine mounting apparatus capable of realizing improvement in working environment while realizing reduction in equipment cost. It is said.
[0005]
[Means for Solving the Problems]
A welding machine mounting apparatus according to claim 1 of the present invention includes a rail laid substantially linearly on a foundation, a conductive plate disposed substantially parallel to the rail on the foundation, and the rail and the conductive plate. A plurality of welding machines are installed across the rails and conductive plates, and the rails and the conductive plates are grounded, and the rails are grounded to the grounds. A ground wire connection portion that is electrically connected to the wire is provided, and a contact portion that has conductivity and slides on the rail and the conductive plate as the carriage travels is provided, and the ground wire connection portion and the contact portion are provided. The configuration is electrically connected, and the configuration of the welding machine mounting apparatus is used as a means for solving the above-described conventional problems.
[0006]
The welding machine mounting apparatus according to claim 2 of the present invention is configured such that a scraper that is provided at the front and rear ends of the carriage and removes foreign matter on the rail and the conductive plate as the carriage travels is used as the contact portion.
[0007]
A welding machine mounting device according to claim 3 of the present invention is a welding wire cable that spans from a welding machine mounted on a carriage to an automatic welding apparatus that welds and travels on a workpiece placed on a traveling path of the carriage prior to the carriage. A tension detecting means for detecting the tension and a control means for running the carriage following the automatic welding apparatus so as to keep the tension of the welding wire cable detected by the tension detecting means within a predetermined range. In the welding machine mounting apparatus according to claim 4 of the invention, the carriage includes a rail side leg that runs on the rail, a conductive plate side leg that runs on the conductive plate, and a welder mounting table that is installed between the legs. The position of the welding machine mounting table in the vertical direction is variable.
[0008]
[Effects of the Invention]
Since the welding machine mounting apparatus according to claim 1 of the present invention has the above-described configuration, in addition to the reduction in equipment cost, each ground wire of a plurality of welding machines mounted on the carriage can be routed. Combined with the fact that it is favorable and the risk of hitting the rail is reduced, the working environment is greatly improved.
[0009]
In the welding machine mounting apparatus according to claim 2 of the present invention, since it has the above-described configuration, it is not necessary to separately provide a grounding component, and the equipment cost can be further reduced. Since the welding machine mounting device according to claim 3 has the above-described configuration, the amount of looseness of the welding wire cable passed from the welding machine on the carriage to the automatic welding apparatus that performs welding on the workpiece preceding the carriage is increased. As a result, the welding operation of the automatic welding apparatus is stably performed, and the welding machine mounting apparatus according to claim 4 of the present invention has the above-described configuration. It will be possible to flexibly handle various workpieces with different dimensions.
[0010]
【Example】
Hereinafter, the present invention will be described with reference to the drawings.
[0011]
1 to 6 show an embodiment of a welding machine mounting apparatus according to the present invention.
[0012]
As shown in FIGS. 1 to 3, the welding machine mounting device 1 includes a rail 2 laid on the foundation E in a substantially straight line, and a conductive piece arranged on the foundation E in parallel with the rail 2. A plate 10 and a carriage 10 that is provided across the rail 2 and the conductive plate 3 and is mounted on the rail 2 and the conductive plate 3 with a plurality of welding machines WA and a plurality of pail packs WB mounted thereon. Both the rail 2 and the conductive plate 3 are grounded to the foundation E.
[0013]
The carriage 10 includes a rail-side leg 11 that travels on the rail 2 with a front wheel 11a and a rear wheel 11b, a conductive plate-side leg 12 that travels on the conductive plate 3 with a front wheel 12a and a rear wheel 12b, A welding machine mounting table 13 is provided between the legs 11 and 12, and power is supplied to the motors 11c and 12c provided on the rail side leg 11 and the conductive plate side leg 12, respectively, to drive the front wheels 11a and 12a. It comes to run by.
[0014]
In this case, the rail-side leg 11 and the conductive plate-side leg 12 can both be expanded and contracted in the vertical direction, so that the vertical position of the welding machine mounting table 13 on which the welding machine WA and the pail pack WB are mounted is set on the workpiece W. The welding machine mounting table 13 is provided with a plurality of ground wire connection portions 14 that are electrically connected to the ground wires Wa of the plurality of welding machines WA. It is.
[0015]
Further, the carriage 10 has conductivity at the front and rear ends of the rail side leg 11 and the conductive plate side leg 12 and slides on the rail 2 and the conductive plate 3 as the carriage 10 travels to remove foreign matters. A scraper (contact portion) 15 is provided.
[0016]
As shown in FIGS. 4 to 6, the scraper 15 includes a circular plate 15 a and a support shaft 15 b, and a bracket in which the support shaft 15 b is fixed to each lower end of the rail side leg 11 and the conductive plate side leg 12. The scraper 15 is attached in a state of being inserted through the 16 flanges 16a and 16b, and the scraper 15 is elastic of a compression coil spring 17 (shown only in FIG. 4) provided between the circular plate 15a and the flange 16a of the bracket 16. It is urged to the rail 2 (conductive plate 3) side by force.
[0017]
And the screw parts 15c and 15c provided in the circular plate 15a of the scraper 15 and the bolts 18 and 18 for fixing the bracket 16 are connected via the cables 19 and 19, respectively. A plurality of ground wire connection portions 14 and the scraper 15 are electrically connected, that is, the ground wire connection portion 14, the welding machine mounting table 13, both legs 11 and 12, the cable 19, the scraper 15, the rail 2, and the conductive plate. 3, a plurality of welding machines WA are grounded.
[0018]
Further, the welding machine mounting apparatus 1 is connected to the carriage 10 to the motors 11c, 12c and a plurality of welding machines WA by connecting a suspension switch 20 as a tension detecting means and a cable 4 arranged along the rail 2. A control box (control means) 21 for supplying power is provided.
[0019]
The suspending switch 20 is a welding wire cable WC that spans an automatic welding device 30 that welds and travels on a work W placed on a traveling path of the carriage 10 from the welding machine WA on the welding machine mounting table 13 before the carriage 10. As shown by a virtual line in FIG. 3, the base side of the wire is actuated when the tension applied to the welding wire cable WC pulled by the automatic welding device 30 exceeds a predetermined upper limit value. On the other hand, the control box 21 supplies power to the motors 11c and 12c when the suspension switch 20 is operated, and follows the automatic welding device 30 to keep the tension of the welding wire cable WC within a predetermined range. It is set so that the carriage 10 can travel.
[0020]
1 to 6, reference numeral 5 is a guide roller provided on the rail side leg 11. The rail 2 is sandwiched from both sides to prevent the carriage 10 from deviating from the travel route.
[0021]
In this welding machine mounting apparatus 1, when power is supplied to a plurality of welding machines WA and at the same time, power is supplied to the automatic welding apparatus 30, as shown in FIG. The welding running is started on the workpiece W placed on the traveling road ahead of the carriage 10.
[0022]
Next, as indicated by phantom lines in FIG. 3, when the welding wire cable WC passed from the welding machine WA to the automatic welding device 30 is pulled by the automatic welding device 30 and the tension exceeds a predetermined upper limit value, the welding is performed. The suspension switch 20 that suspends and holds the base side of the wire cable WC is activated. At this stage, power is supplied from the control box 21 to the motors 11c and 12c, and the carriage 10 is connected to the automatic welding device 30. Therefore, the tension of the welding wire cable WC is always kept within a predetermined range.
[0023]
At this time, each ground wire Wa of the plurality of welding machines WA is electrically connected to the plurality of ground wire connection portions 14 of the welding machine mounting table 13, and the welding machine mounting is performed from the ground wire connection portions 14. Since the table 13, the legs 11, 12, the cable 19, the scraper 15, the rail 2 and the conductive plate 3 are sequentially passed through and the plurality of welding machines WA are grounded, when the carriage 10 moves. Will not drag each ground wire Wa of the plurality of welding machines WA mounted on the welding machine mounting table 13, and the ground wire Wa may be caught on the workpiece W, or an operator may go over the ground wire Wa. This is avoided.
[0024]
Further, in this welding machine mounting apparatus 1, the scraper 15 that removes foreign matter on the rail 2 and the conductive plate 3 is electrically connected to the ground wire connection portion 14. It is not necessary to provide this, and in combination with laying only one rail 2, the facility cost can be further reduced.
[0025]
Further, the welding machine mounting apparatus 1 is provided with a suspension switch 20 that operates when the tension applied to the welding wire cable WC pulled by the automatic welding apparatus 30 exceeds a predetermined upper limit value. Since the control box 21 for supplying the power to the motors 11c and 12c and causing the carriage 10 to run following the automatic welding apparatus 30 is provided when the motor 20 is activated, the automatic welding apparatus is provided from the welding machine WA on the carriage 10. The amount of slack of the welding wire cable WC that is stretched over 30 is kept substantially constant. Furthermore, in the welding machine mounting device 1, the vertical position of the welding machine mounting table 13 of the carriage 10 can be changed. Therefore, it can respond flexibly and quickly to various workpieces W having different height dimensions.
[0026]
In addition, the detailed structure of the welding machine mounting apparatus concerning this invention is not limited to an above-described Example.
[0027]
【The invention's effect】
As described above, since the welding machine mounting apparatus according to claim 1 of the present invention has the above-described configuration, it is possible to reduce the equipment cost, and in addition, a plurality of welding machines mounted on the carriage. It is possible to improve the working environment dramatically, because it is possible to improve the handling of each ground wire and to reduce the risk of hitting the rail. The effect is brought about.
[0028]
Since the welding machine mounting apparatus according to claim 2 of the present invention has the above-described configuration, the equipment cost can be further reduced. In the welding machine mounting apparatus according to claim 3 of the present invention, Since the above-described configuration is employed, it is possible to stably carry out the automatic welding apparatus preceding the carriage, and the welding machine mounting apparatus according to claim 4 of the present invention has the above-described configuration. The excellent effect that it can respond flexibly to various workpieces having different height dimensions is brought about.
[Brief description of the drawings]
FIG. 1 is an explanatory front view showing an embodiment of a welding machine mounting apparatus according to the present invention.
2 is an explanatory plan view of the welding machine mounting apparatus shown in FIG. 1. FIG.
FIG. 3 is an explanatory side view of the welding machine mounting apparatus shown in FIG. 1;
4 is a partially enlarged explanatory view from the front direction showing in detail a scraper portion of the welding machine mounting apparatus in FIG. 1; FIG.
5 is a partially enlarged explanatory view from the plane direction showing in detail a scraper portion of the welding machine mounting apparatus in FIG. 1; FIG.
FIG. 6 is a partially enlarged explanatory view from the side direction showing in detail a scraper portion of the welding machine mounting apparatus in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Welding machine mounting apparatus 2 Rail 3 Conductive plate 10 Carriage 11 Rail side leg 12 Conductive plate side leg 13 Welding machine mounting table 14 Ground wire connection part 15 Scraper (contact part)
20 Hanging switch (tension detection means)
21 Control box (control means)
30 Automatic Welding Equipment E Foundation WA Welding Machine Wa Ground Wire WC Welding Wire Cable W Workpiece

Claims (4)

A single rail laid in a straight line on the foundation, a single conductive plate placed on the foundation approximately parallel to the rail, and multiple welders installed across the rail and conductive plate And a carriage that is self-propelled on the rail and the conductive plate, each of the rail and the conductive plate is grounded, and the carriage is provided with a ground wire connection portion that is electrically connected to each ground wire of a plurality of welding machines. A welding machine mounting device characterized by having a contact portion that has conductivity and slides on the rail and the conductive plate as the carriage travels, and electrically connects the ground wire connection portion and the contact portion . The welding machine mounting apparatus according to claim 1, wherein a scraper provided at the front and rear ends of the carriage to remove foreign matter on the rail and the conductive plate as the carriage travels is used as a contact portion. Tension detection means for detecting the tension applied to the welding wire cable passed over the automatic welding device that welds the workpiece placed on the carriage travel path from the welding machine mounted on the carriage before the carriage, and the tension detection means The welding machine mounting apparatus according to claim 1, further comprising a control unit that causes the carriage to run following the automatic welding apparatus so as to keep the detected tension of the welding wire cable within a predetermined range. The carriage includes a rail side leg that runs on the rail, a conductive plate side leg that runs on the conductive plate, and a welding machine mounting table that is installed between the legs, and the vertical position of the welding machine mounting table is variable. The welding machine mounting device according to any one of claims 1 to 3.

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