JPS6186083A - Cleaning method of welding nozzle - Google Patents

Abstract

PURPOSE:To eliminate easily spatters without requiring the position reproducing accuracy of a robot by forming in advance a film of a spatter adhesion preventive liquid in the tip of a welding nozzle, blowing an air when the work has been ended, and eliminating the spatters. CONSTITUTION:A tip part 1a of a welding nozzle 1 is dipped into a spatter adhesion preventive liquid W in a vessel 20 installed on a table 21, and a film by the spatter adhesion preventive liquid W is formed in a tip 1a of the welding nozzle 1. Also, at the stage that an automatic welding work by a robot has been ended, a spatter part S which has adhered to the tip part 1a of the welding nozzle 1 and the inside wall surface of the tip is positioned at the upper part of an air blow-out nozzle 22 of the table 21. Subsequently, the spatters S are peeled off by operating the outside output part of the robot, opening a solenoid valve connected to said part, and jetting an air X of a prescribed quantity.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for cleaning a welding nozzle,
More specifically, the present invention relates to a welding nozzle cleaning method for efficiently removing spatter deposited on the tip 1'' T114 of the welding nozzle and its inner peripheral wall.

[Prior art]

In general, automatic welding methods using robots etc.
If the tip of the welding nozzle is not kept clean at all times, quality may deteriorate or welding accidents may occur.
There is a problem in that the loss of welding time increases.

In the conventional welding nozzle, as shown in Fig. 3, the welding nozzle l itself is made of metal such as copper or clean/plated copper, and the base end of this welding nozzle l is connected to the insulator 2 ( It is removably engaged with a threaded portion 3 protruding from the tip of an insulating bushing.

In addition, a contact tip 4 is provided in the center of the welding nozzle l.
is arranged concentrically with the welding nozzle l, and a welding wire 5 is supplied to the center of the contact tip 4, and an orifice is supplied from a space 6 between the contact tip 4 and the welding nozzle l. The carbon dioxide gas in 12 is guided to the gas cylinder that has passed through 7.

At this time, the welding wire 5 is automatically supplied by the supply roller I3.

Electrical wiring is provided between the contact tip 4 and the base metal 8 as shown in the ltl mir diagram shown in FIG. The arc 9 that connects the + and (8) causes the /SS choir 5 +218 to be connected to each other. Carbonic acid guided to the welding nozzle 1; gas sieved by squirrel 14;

By the way, during arc/8 contact using the conventional gas seal I/L as described above, slag such as non-metallic substances generated in the I-container part, or spacks such as metal grains generated during welding, are scattered. The inner circle 9 at the tip of the welding nozzle 1 made of copper metal
A phenomenon of welding to 12 occurs.

This spatter etc. is the tip of the welding nozzle 1 α1:1 inner pot peripheral wall 1
If the welding occurs on the spatter, the space 6 will gradually become closed, making it difficult for the carbon dioxide gas 14 to flow out, obstructing the feeding of the welding wire, or causing a short circuit due to the welding wire 5 coming into contact with the spatter. accidents occur.

In order to prevent these accidents, conventionally, once the welding work is completed, a coiled spring, etc. is applied to the inner circumferential wall 1a of the tip of the welding nozzle l, l on the tip of nozzle 1 and the inner wall! fJ? ? Work is being done to remove the switcher.

, RI, 'L, T, et al., When working to remove spatter from conventional I8, use welding nozzle 1 with 1χ! °・Since the bot is being moved, maintaining the position reproducibility accuracy of ll) i L, I 11 in Table 1 after the work is completed - problem 3 which is extremely difficult due to interference with the workpiece, etc. was there.

Furthermore, when using a coiled spring, a spatula, or the like as described above, it is necessary to devise ways to avoid urination.

[Purpose of the invention]

This invention was devised by focusing on the conventional problems, and its purpose is to be able to easily remove spatter without requiring high precision in position reproduction for Robo 2.1. In addition, the present invention provides a welding nozzle cleaning method that can efficiently remove spatter without requiring measures such as insulation.

[Structure of the invention]

In order to achieve the above-mentioned object, the present invention forms a film of Supanotato 1 (deposition prevention film) on the tip of the welding nozzle in advance,
The gist of this method is to remove spatter by blowing air onto the spatter that adhered to the welding nozzle during the welding operation when the welding operation is completed.

[Embodiments of the invention]

The present invention will be described in detail below based on the accompanying drawings.

In the following explanation, the same components as those of the conventional example explained in FIGS. 3 and 4 will be referred to as "same" and the explanation will be omitted.

FIG. 1 shows a first embodiment of a cleaning method for removing spatter S and the like deposited on the tip 1a of a welding nozzle 1, and 20 is a container containing a spatter adhesion prevention IL1W;
Reference numeral 21 denotes a table on which the container 20 is placed, and a plurality of air blowing nozzles 22 are arranged upwardly on one upper surface of the table 21.

The plurality of air blowing nozzles 22 are connected to the table 2.
Tu k to the air supply valve 23 piped at the bottom of 1.
This air supply pipe 23-2 is provided with a solenoid valve 24 connected to an external output portion of a robot (not shown) that holds the welding nozzle 1, and an opening/closing valve 25, respectively.

Next, when cleaning the welding nozzle 1, first immerse the tip 1a of the welding nozzle 1 in the spatter adhesion prevention liquid W in the container 20 placed on the table 2I, and then clean the tip 1a of the welding nozzle 1. / Form a film with ivy adhesion prevention liquid W. And constant automatic melting by robot 1
When the ν process is completed, the spattered part S deposited on the tip 1a of the welding nozzle 1 and the inner wall surface 1a is transferred to the air blowing nozzle 22 of the table 21.
Position it on the opposite side.

Then, by activating the external output part of the robot and opening the filtration valve 24 connected to it, -. The air X is ejected to make the spatter S 1t.

In addition, the air flow ♀ is to be adjusted to the f-angle view of the 18 material and the green earth lobe 3.

As mentioned above, high pressure air (approximately 6 kg /
cnl) with sputtering of welding nostle 1, T'l' r!
L
S-Spatter S! , it is the wth U to the 1'th wheel, and it is chiru.

Next, FIG. 2 shows a second embodiment of the present invention, in which high-pressure air Each time it is ejected, the spatter S is separated.

Note that a method of removing sputtering by combining the first and second embodiments described above may be used, and either method may be used.
The tip portion 1a of the welding nozzle 1 can be efficiently cleaned.

〔Effect of the invention〕

As described above, this invention forms a coating with a spatter adhesion prevention liquid on the tip of the welding nozzle in advance, and at the end of the welding operation, removes the spatter adhering to the nozzle δ during the welding operation.
Blow air at 81) minutes =j! Use J to remove Tsuku. Because I changed it to L, L1 E,・1. position reproduction 11'
+'i degree is 7υ・required, -U does not easily remove spatter and takes out oneself, and at the same time, insulation, etc., is also necessary! - Efficiently removes spatter without any problems 5
I love it. Also, is the composition in the tube? Therefore, it can be manufactured at low cost and is easy to maintain.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention, FIG. 2 is a perspective view showing a second embodiment, and FIGS. 3 and 4 are sectional views of a conventional welding nozzle and the /8 welding method. FIG. l...Welding, 'suru, la...tip of welding nozzle, W...S...Gut ivy adhesion prevention 11-1 liquid, S...spatter part, X...air.

Claims (1)

[Claims] A welding nozzle characterized in that a film is formed in advance on the tip of the welding nozzle with a spatter adhesion prevention liquid, and at the end of welding work, air is blown onto the spatter part that has adhered to the welding nozzle during welding work to remove the spatter. Cleaning method.