JPS624385Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a quick reference table of welding conditions that allows you to easily and reliably know the welding conditions when using an arc welder. Conventional arc welding machines have a simple equal division scale or only the output current value displayed on the current adjustment section, and each output current can be applied to the material of the workpiece, plate thickness, leg length, welding speed, and electrode shape to be used. Welding conditions or welding information such as shielding gas flow rate, welding posture, etc. were determined each time by checking separately prepared welding condition tables and welding manuals. However, in general welding work sites, these welding condition tables and welding manuals are inconvenient to store and handle, and they are often damaged or lost, and are easy to misunderstand. Welding conditions are often carried out arbitrarily based on the operator's intuition without referring to the condition tables or manuals, and this causes individual differences in welding results and the occurrence of welding defects. Furthermore, in recent years, due to a shortage of skilled workers, it has become common for inexperienced workers to be engaged in welding important parts, and these circumstances have created a need for a means to easily determine optimal welding conditions.

In response, it has been considered to write all of the necessary welding conditions and welding information on the output adjustment scale of the welding machine, but in this case the display would be extremely complicated and difficult to read, making it impractical.

The present invention solves the above problem by placing a transparent plate over the scale of the welding current regulator of a welding machine and writing necessary welding conditions on the transparent plate.

This will be explained in detail below with reference to the drawings. FIG. 1 is a front view of an arc welding machine equipped with the welding condition quick reference table of the present invention. In the figure, 1 is an arc welding machine, and detailed parts not related to the present invention are omitted.
Reference numeral 2 designates an output current regulator, such as a rotary switch for tap changeover, a variable resistor for setting a reference signal for current regulation, and a handle for moving a movable iron core for current regulation. 3 is a welding condition quick reference table made of a transparent plate of the present invention, and 4 is a current adjustment scale provided on the arc welding machine 1, which can be identified through the welding condition quick reference table 3. FIG. 2a is a front view of an embodiment of the welding condition quick reference table of the present invention, and FIG. 2b is a sectional view. The embodiment shown in the figure is a quick reference table of welding conditions for determining the thickness of the workpiece corresponding to the output current adjusted by the current regulator of the arc welding machine, and is made of a transparent plate. In FIG. 1A, the part marked "A" approximately corresponds to the shape of the scale of the current regulator of the applied arc welding machine, and shows, as an example, the thickness of the workpiece to be welded corresponding to each output current. In addition, the "B" section is for entering common welding information other than welding current, such as the type of arc welding machine to which this welding conditions quick reference table can be applied, welding method, etc. In the example shown in the figure, this quick reference table is applied to downward butt welding, and for workpieces with a plate thickness of 1.2 mm to 4.5 mm, one-sided single-layer welding,
It is written that for objects to be welded between 6.0mm and 12.0mm, single-layer welding is to be performed on both sides. In addition, when this welding condition quick reference table is superimposed on the current adjustment scale of the arc welding machine, this "B" part is placed in a position where it does not overlap with the current adjustment scale and does not require transparent viewing. If a permanent magnet, such as a magnetic rubber, is attached or a suction pad is attached as shown in 5 in FIG. Of course, this welding conditions quick reference table has a hole in the position corresponding to the handle so as to avoid the current regulator part of the arc welding machine, so that it can be attached and detached without removing the handle. When using the welding condition quick reference table shown in FIG. 2a, the operator can know the necessary welding conditions simply by superimposing this quick reference table on the output current scale of the current regulator of the arc welding machine.
For example, when butt welding a steel plate with a thickness of 9 mm downward, the current regulator should be set at the upper right side of the diagram, that is, toward 2 o'clock.
It can be seen that it is sufficient to set each layer on both sides and weld each layer one by one from both sides.

In this way, the welding method and welding current to be used can be visually known in a form that matches the actual adjustment state of the arc welding machine, so there is no possibility of making mistakes in setting.

FIG. 3 shows how the welding conditions quick reference table of the present invention is superimposed on the current adjustment scale of an arc welding machine. In the figure, the characters indicated by dotted lines are the output current scale of the arc welding machine, which can be confirmed by looking at the welding conditions quick reference table 4. When using the welding conditions quick reference table of the present invention, the actual output current can also be checked as shown in the figure, so as a result of actual welding, some welding errors may occur depending on the material of the workpiece, groove shape, required amount of extra welding, etc. Even if it becomes necessary to change the conditions, you can change the setting to the desired output current while wearing this quick reference table.

In Figs. 2 and 3, a quick reference table of welding conditions related to plate thickness is shown as an example, but the present invention is not limited to this.In addition to plate thickness, the present invention is not limited to this.
It can be applied to everything such as the leg length in fillet welding, welding speed, the diameter of the welding rod used, and the shielding gas flow rate when used in gas shielded arc welding. You may write several types of related items. In this case, the information can be made clearer by changing the color displayed for each welding condition element.

In addition, the information to be entered in areas other than those corresponding to the output current scale (the part marked "B" in Figure 2a) includes the welding posture, groove shape, material of the workpiece, and information on the welding rod or welding wire used. You may also enter the type, etc. Furthermore, for new shapes and materials for which the welding conditions and welding method have not yet been determined, we prepare a completely blank transparent plate and check the welding conditions obtained experimentally and empirically. By writing information on this transparent board, the reproducibility of welding on the same type of workpiece will be ensured in the future, and valuable experience and data can be preserved in a format that can be easily reproduced by other workers. .

Furthermore, since the welding conditions quick reference table of the present invention is made of transparent plates, it is possible to use multiple sheets stacked on top of each other, and in this case, more welding conditions and information can be known at a glance. It becomes like this.

Although Figs. 1 to 3 all illustrate examples in which the rotary current regulator and the output current scale displayed concentrically with the rotary current regulator are applied, the present invention is not limited to this and can be applied to general Of course, the present invention can also be applied to a horizontally elongated sliding type output current display such as that used in an AC arc welding machine.

As described above, when using the welding conditions quick reference table of the present invention, the welding conditions and welding information can be visually known in a form that matches the adjustment status of the arc welding machine, eliminating setting errors and making it easier to understand many welding conditions. Since there is no need to transfer data selected from tables or manuals to the actual arc welding machine, the burden on the operator is greatly reduced, and welding conditions can always be set accurately. In addition, one or more conditions can be written on a single transparent board to the extent that the display is not complicated, and if other conditions are required,
By using these in combination, it is possible to increase the number of condition elements, so unlike the conventional method in which all welding conditions and information are written together on one scale plate, it is possible to read accurately, and the display can be adjusted according to the welding machine. Since it matches the adjustment form, it is visual, and setting and confirmation are easy, so there are no setting errors.
Furthermore, since it is a transparent plate, it is possible to know not only the welding conditions but also the actual output current value, making it easy to make corrections and records when necessary.
In addition, when preparing a blank transparent plate, it can be used as a substitute for a practical data sheet for workpieces whose welding conditions have not yet been determined, and can be used to ensure reproducibility when used by other workers. It is possible.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the welding conditions quick reference table of the present invention when it is attached to an arc welding machine, Figure 2 is a diagram showing an example of the welding conditions quick reference table of the present invention, and Figure 3 is a diagram showing the welding conditions quick reference table of the present invention. It is a figure which shows the usage state of the welding conditions quick reference table. 1... Arc welding machine, 2... Output current regulator,
3...Welding conditions quick reference table, 4...Output current scale, 5
……permanent magnet.

Claims (1)

[Claims for Utility Model Registration] 1. The arc welding machine is superimposed on the scale of an arc welding machine having a current regulator with a scale corresponding to the output current, and is placed at a position corresponding to the scale of the current regulator. A quick reference table of welding conditions for arc welding machines consisting of a transparent plate on which welding conditions that match the output current of the machine are written. 2 Utility model registration claim 1 in which a permanent magnet or an adsorption pad is fixed to a part of the transparent plate to facilitate attachment and detachment to the scale portion of the arc welding machine.
A quick reference table of welding conditions for arc welding machines as described in section.