JP2002292470A - Non-consumable electrode type arc bonding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-consumable electrode type arc bonding device capable of conducting an arc bonding by automatically cleaning soot and dust adhered on the non-consumable electrode and a gas nozzle. SOLUTION: The non-consumable electrode and the gas nozzle can be cleaned up by a torch having the non-consumable electrode and the gas nozzle, each travel driving means which runs the torch in X, Y, Z directions and each position detecting means, a brush driving means which rotates a tubular type brush in which hair is transplanted on an outer tubular peripheral surface arranged in the cleaning position and the control means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-consumable electrode type arc welding apparatus for cleaning a torch having a non-consumable electrode and a gas nozzle.

[0002]

2. Description of the Related Art Conventionally, as a method of joining fine parts instead of soldering, a method of melting a metal at a joining portion with an arc and joining has been performed.

[0003] At the time of such arc joining, soot and dust at the time of arc joining have adhered to a non-consumable electrode that generates an arc and a gas nozzle that supplies gas to a joining portion.

Therefore, conventionally, the non-consumable electrode and the gas nozzle have been manually cleaned periodically by stopping the apparatus.

[0005]

However, in the conventional method of manually cleaning the non-consumable electrode and the gas nozzle as in the prior art, the operation has to be stopped and the operation has to be stopped.

[0006] In addition, the cleaning is uneven due to the skill of the worker or the type of worker, and the sharp end of the non-consumable electrode is dangerous.

[0007] Further, there is a case where the user forgets to stop the apparatus manually and does not periodically clean the non-consumable electrode and the gas nozzle.

Accordingly, an object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a non-consumable electrode type arc welding apparatus capable of automatically cleaning a non-consumable electrode and a gas nozzle.

[0009]

According to a first aspect of the present invention, there is provided a non-consumable electrode for generating an arc between a workpiece and a non-consumable electrode and a gas nozzle. A torch, a torch traveling drive unit for moving the torch, a brush disposed at a cleaning position different from a joining position, a brush drive unit for vibrating or rotating the brush, and the cleaning position of the torch during cleaning. The non-consumable electrode type arc welding apparatus further includes control means for moving the non-consumable electrode and the gas nozzle into contact with the brush.

According to a second aspect of the present invention, there is provided the consumable electrode type arc welding apparatus according to the first aspect, wherein a brush is provided on a cylindrical base material.

According to a third aspect of the present invention, there is provided the consumable electrode type arc welding apparatus according to the first aspect, wherein a brush is provided on a rectangular base material.

According to a fourth aspect of the present invention, the control means makes the contact portion of the brush and the torch different according to the number of cleanings stored in the storage means for storing the number of cleanings. 4. A consumable electrode-type arc joining apparatus according to any one of 3.

According to a fifth aspect of the present invention, the torch traveling drive means includes a torch X for moving the torch in one of the horizontal directions.
Traveling driving means, a torch Y traveling driving means for moving the torch in a direction different from one of the horizontal directions, and a torch Z traveling driving means for moving the torch in a vertical direction;
5. The non-consumable electrode type arc welding according to claim 1, further comprising a traveling position detecting means for detecting a position of the torch in each direction, and connecting the torch traveling driving means and the torch traveling position detecting means to the control means. Device.

According to a sixth aspect of the present invention, at the time of cleaning, soot, dust and the like adhering to the torch are sucked by air from a wind direction cylinder disposed near the cleaning position. It is a non-consumable electrode type arc joining device.

According to a seventh aspect of the present invention, at the time of cleaning, soot, dust and the like adhering to the torch are blown off by blowing air from a wind direction cylinder disposed near the cleaning position. The non-consumable electrode type arc joining apparatus described in 1 above.

According to an eighth aspect of the present invention, there is provided the non-consumable electrode type arc welding apparatus according to the sixth or seventh aspect, further comprising a suction / blowing switching means for switching the air in the wind direction tube to suction or blowing.

According to a ninth aspect of the present invention, there is provided the non-consumable electrode type arc welding apparatus according to any one of the first to eighth aspects, further comprising a brush driving speed adjusting means for varying a rotation speed or a vibration speed of the brush. .

According to a tenth aspect of the present invention, there is provided a cleaning preset counter for storing the number of times of joining, cleaning the torch when the stored numerical value is equal to or more than a predetermined value, and resetting the numerical value by this cleaning. 10. The non-consumable electrode type arc joining apparatus according to any one of 1 to 9.

According to the eleventh aspect of the present invention, there is provided a determining means for determining whether or not the arc welding result is good, and the torch is cleaned when a welding failure occurs or occurs continuously. The non-consumable electrode type arc joining apparatus described in 1 above.

According to a twelfth aspect of the present invention, the control means comprises:
The non-consumable electrode type arc welding apparatus according to any one of claims 1 to 11, wherein the torch is repeatedly removed from and inserted into the brush when the brush rotates or vibrates.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention as set forth in claim 1,
A brush disposed at a cleaning position different from the joining position, a brush driving means for vibrating or rotating the brush, and moving the torch to the cleaning position at the time of cleaning, the non-consumable electrode and the gas nozzle on the brush. Since the control means for making contact is provided, it is possible to obtain an effect that the non-consumable electrode and the gas nozzle can be efficiently cleaned by rotating or vibrating the brush.

According to the second aspect of the present invention, since the brush is provided on the cylindrical base material, it is easy to rotate the brush, and the non-consumable electrode and the gas nozzle can be efficiently cleaned. Action is obtained.

According to the third aspect of the present invention, since the brush is provided on the rectangular base material, the brush can be easily slid, and the non-consumable electrode and the gas nozzle can be efficiently cleaned. Is obtained.

According to the fourth aspect of the present invention, the control means stores the number of times of cleaning and makes the contact portion between the brush and the torch different according to the number of times of cleaning stored in the storing means. In addition, the position at which the non-consumable electrode and the gas nozzle are brought into contact with the brush can be moved every time cleaning is performed, and the operation of extending the life of the brush can be obtained.

According to the present invention, the torch traveling drive means moves the torch in one of the horizontal directions and the torch X travel drive means, and moves the torch in a direction different from the one in the horizontal direction. A torch Y travel drive means and a torch Z travel drive means for moving the torch in the vertical direction are provided, and travel position detection means for detecting the position of each direction of the torch is provided. These torch travel drive means and torch travel position detection means By connecting to the control means, the degree of freedom of setting the cleaning position can be improved.

According to the present invention, during cleaning, soot, dust and the like adhering to the torch are sucked by air from the wind direction tube disposed near the cleaning position. The effect is obtained that dust and the like do not adhere to the brush.

According to the present invention, when cleaning, soot, dust and the like adhering to the torch are blown out by blowing air from a wind direction tube arranged near the cleaning position, so that the separated soot is removed. The effect is obtained that dust and the like do not adhere to the brush.

According to the eighth aspect of the present invention, since the suction / blowing switching means for switching the air in the wind direction cylinder to the suction or the blowing is provided, an effect that the equipment can be inexpensively obtained is obtained.

According to the ninth aspect of the present invention, since the brush driving speed adjusting means for changing the rotation speed or the vibration speed of the brush is provided, the soot adhered to the non-consumable electrode and the gas nozzle while changing the driving speed of the brush, The effect that the dust and the like can be thoroughly cleaned can be obtained.

The present invention according to claim 10 is provided with a cleaning preset counter for storing the number of times of joining, cleaning the torch when the stored numerical value is equal to or more than a predetermined value, and resetting the numerical value by this cleaning. The effect that the automatic cleaning can be performed periodically can be obtained.

According to the eleventh aspect of the present invention, the judgment means for judging the quality of the arc joining result is provided, and the torch is cleaned when the joining failure occurs or continuously occurs. Sometimes, the effect of immediately cleaning the non-consumable electrode and the gas nozzle is obtained.

According to the twelfth aspect of the present invention, when the brush rotates or vibrates, the torch is repeatedly removed from and inserted into the brush, so that the soot, dust and the like adhering to the non-consumable electrode and the gas nozzle are completely cleaned. The effect that can be obtained is obtained.

Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the entire configuration of a non-consumable electrode arc joining apparatus. Reference numeral 1 denotes a torch, which has a gas nozzle 2 for ejecting a shield gas to a welding portion and a non-consumable electrode 3 for generating an arc.

The torch 1 is held by the torch Z traveling section 7.

The torch Z traveling section 7 is mounted on the torch X traveling section 4, and is driven by the torch X traveling driving means 5 in the X direction indicated by the arrow in FIG.

The position when the torch X traveling section 4 moves in the X direction is detected by the torch X traveling position detecting means 6.

The position detection signal obtained from the torch X traveling position detecting means 6 is input to the control means 12.

The torch Z traveling section 7 is driven by the torch Z traveling drive means 8 in the Z direction indicated by the arrow in FIG. 1, whereby the position of the torch 1 in the Z direction is detected by the torch Z traveling position detecting means 9.

The position detection signal obtained from the torch Z traveling position detecting means 9 is input to the control means 12.

Examples of the torch X traveling driving means 5 and the torch Z traveling driving means 8 include a servo motor, a pulse motor, an inverter motor, and an air cylinder. The torch X traveling position detecting means 6 and the torch Z traveling position detecting means 9 are provided. Examples include encoders, limit switches, and photo switches.

Gas is supplied from the gas nozzle 2 and power is supplied to the non-consumable electrode 3 from a welding power source (not shown) to
(Not shown) by arc welding.

At first, the non-consumable electrode 3 and the gas nozzle 2
Is a clean surface, but as production increases, soot and dust 17 adhere to the surfaces of the non-consumable electrode 3 and the gas nozzle 2 by arc welding.

In order to remove the soot and dust 17, FIG.
The torch X traveling unit 4 is caused to travel in the X direction by the torch X traveling drive means 5, and the torch 1 is stopped above the cylindrical brush 11a planted on the outer peripheral surface of the cylinder.

Then, the torch Z traveling section 7 travels in the Z direction by the torch Z traveling driving means 8, and stops the torch 1 at the cleaning position P1.

When the torch 1 starts running in the Z direction, the brush 11a is rotated at the same time as the brush 11a contacts the non-consumable electrode 3 and the gas nozzle 2 and then separates. The cleaning is performed by removing soot and dust 17 adhering to the non-consumable electrode 3 and the gas nozzle 2 in the explanatory diagram).

Also, by rotating the brush 11a not only in one direction but also in normal rotation and reverse rotation alternately,
A method of cleaning the soot and dust 17 attached to the non-consumable electrode 3 and the gas nozzle 2 in FIG. 4 by bringing the brush 11a into contact with the entire surface of the non-consumable electrode 3 and the gas nozzle 2, and the rotation of the brush 11a in FIG. The speed is adjusted by the brush drive speed adjusting means 16 to change the cleaning speed, or the torch Z travel drive means 8 is driven during cleaning to repeatedly remove and insert the non-consumable electrode 3 and the gas nozzle 2 from within the brush 11a. The control by the control means 12 completely removes soot and dust 17 strongly attached to the non-consumable electrode 3 and the gas nozzle 2.

(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is an explanatory view of a brush portion. In this embodiment, the first embodiment is characterized in that a rectangular brush 11b planted on a rectangular surface is used and that the brush is reciprocated by brush driving means 10. And different. The other configuration is the same as that of the first embodiment, and the description is omitted.

With this configuration, the brush 11a comes into contact with the entire surface of the non-consumable electrode 3 and the gas nozzle 2 so that the soot strongly adhered to the non-consumable electrode 3 and the gas nozzle 2 in FIG.
The dust 17 can be completely removed.

(Embodiment 3) Hereinafter, a third embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is an explanatory view of the torch portion. In the present embodiment, the non-consumable electrode 3 and the gas nozzle 2 are caused to travel in the Y direction indicated by the arrow by the torch Y traveling drive means 18. The point that the position in the Y direction is detected by the torch Y traveling position detecting means 19 is different from the first embodiment. Other configurations are the same as those of the first embodiment.
The description is omitted.

In the present embodiment, the position detection signal obtained from the torch Y traveling position detecting means 19 is
2 is input.

The position where the non-consumable electrode and the gas nozzle are brought into contact with the brush is slightly shifted in the Y direction (P2 position in FIG. 3) for each cleaning, and the torch Z traveling drive means 8 in FIG. The torch 1 is moved to perform cleaning.

Examples of the traveling torch Y traveling driving means 18 include a servo motor, a pulse motor, an inverter motor, and an air cylinder, and examples of the torch Y traveling position detecting means 19 include an encoder, a limit switch, and a photo switch. .

(Embodiment 4) Hereinafter, a fourth embodiment of the present invention will be described.

In the present embodiment, when the soot and dust 17 attached to the non-consumable electrode 3 and the gas nozzle 2 are cleaned by the brush 11a, the soot and dust 17 are supplied from the wind direction cylinder 14 disposed near the cleaning position to the air. The air is blown by air or blown by air. Since the other configuration is the same as that of the first embodiment, the description thereof is omitted.

Further, it is also possible to provide a suction / blowing switching means 15 for switching the air in the wind direction tube 14 between suction and blowing, and to select the most suitable processing method at that time among the suction and blowing.

(Embodiment 5) Hereinafter, the operation in each of the above embodiments will be described with reference to the flowchart of FIG.

After starting the non-consumable electrode arc welding apparatus, the arc welding of step 1 (hereinafter, step is referred to as S) is repeated, and at the same time, the cleaning preset counter 13 of FIG.
Starts counting.

The production preset value is input in advance to the cleaning preset counter 13, and when the production preset value is reached, the cleaning preset counter 13 counts up (S2),
The torch 1 moves to the electrode cleaning position P1 (S3).

Then, the torch 1 is lowered (S4) and the brush is rotated (S5) to clean the electrodes.

When the cleaning is completed (S6), the torch is raised.
(S7).

Alternatively, the cleaning preset counter 13 (the preset value of the counter is arbitrarily set) for cleaning the non-consumable electrode 3 and the gas nozzle 2 when the arc welding result defect occurs at least once continuously. When the count-up signal is input to the control means 12, the non-consumable electrode 3 and the gas nozzle 2 are cleaned.

[0065]

As described above, according to the present invention, when soot or dust during arc welding adheres to the non-consumable electrode and the gas nozzle, the non-consumable electrode is automatically connected without stopping the arc welding apparatus. The gas nozzle can be cleaned, and the surface can be kept clean without attaching impurities to the non-consumable electrode and the gas nozzle.

There is no unevenness in the cleaning degree of the non-consumable electrode and the gas nozzle depending on the skill of the worker or the worker.

The manual operation is dangerous because the tip of the non-consumable electrode is sharp, but it is safe because it is automatically cleaned.

Further, the trouble of having to clean the non-consumable electrode and the gas nozzle each time the type of the workpiece changes is eliminated, and the user has forgotten to stop the apparatus manually. Thus, the non-consumable electrode and the gas nozzle can be periodically cleaned, so that the operation rate of the arc joining apparatus is high.

From the above, it is possible to clean the non-consumable electrode and the gas nozzle very efficiently, and to obtain a state in which impurities are not always attached to the non-consumable electrode and the gas nozzle.
Good arc start and no arc start mistake. Further, since impurities such as soot and dust do not enter the article, a high-quality article can be provided.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a non-consumable electrode arc bonding apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of a brush according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a main part according to a third embodiment of the present invention.

FIG. 4 is an enlarged view of the tip of the torch.

FIG. 5 is an operation flowchart in the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Torch 2 Gas nozzle 3 Non-consumable electrode 4 Torch X traveling part 5 Torch X traveling driving means 6 Torch X traveling position detecting means 7 Torch Z traveling part 8 Torch Z traveling driving means 9 Torch Z traveling position detecting means 10 Brush driving means 11 Brush 12 control means 13 cleaning preset counter 14 wind direction cylinder 15 suction / blowing switching means 16 brush drive speed adjusting means 17 soot / dust 18 torch Y traveling drive means 19 torch Y traveling position detecting means P1 cleaning position P2 cleaning shift position

Claims (12)

[Claims] 1. A non-consumable electrode for generating an arc between a workpiece and a torch having the non-consumable electrode and a gas nozzle; a torch traveling drive means for moving the torch; A brush disposed at a cleaning position, a brush driving unit for vibrating or rotating the brush, and a control unit for moving the torch to the cleaning position at the time of cleaning, and bringing the non-consumable electrode and the gas nozzle into contact with the brush. Non-consumable electrode type arc welding equipment. 2. The consumable electrode type arc welding apparatus according to claim 1, wherein a brush is provided on the cylindrical base material. 3. The consumable electrode type arc welding apparatus according to claim 1, wherein a brush is provided on a rectangular base material. 4. The control device according to claim 1, wherein the control means stores the number of times of cleaning, and makes the contact portion between the brush and the torch different according to the number of times of cleaning stored in the storing means. Consumable electrode type arc welding equipment. 5. The torch traveling drive means comprises: a torch X travel drive means for moving the torch in one of the horizontal directions; a torch Y travel drive means for moving the torch in a direction different from the one of the horizontal directions; A torch Z travel drive means for moving the torch in the vertical direction, travel position detection means for detecting the position of each direction of the torch is provided, and the torch travel drive means and the torch travel position detection means are connected to the control means. 5. The non-consumable electrode type arc welding apparatus according to any one of 4. 6. The non-consumable electrode type arc welding apparatus according to claim 1, wherein during cleaning, soot, dust and the like adhering to the torch are sucked by air from a wind direction cylinder disposed near the cleaning position. . 7. The non-consumable electrode type according to claim 1, wherein at the time of cleaning, soot, dust and the like adhering to the torch are blown out by blowing air from a wind direction cylinder disposed near the cleaning position. Arc joining equipment. 8. The non-consumable electrode type arc welding apparatus according to claim 6, further comprising suction / air switching means for switching air in the air direction tube to suction or air blowing. 9. The non-consumable electrode type arc welding apparatus according to claim 1, further comprising a brush driving speed adjusting means for varying a rotation speed or a vibration speed of the brush. 10. The cleaning preset counter according to claim 1, further comprising a cleaning preset counter for storing the number of times of joining, cleaning the torch when the stored value is equal to or greater than a predetermined value, and resetting the value by this cleaning. The non-consumable electrode type arc joining apparatus according to the above description. 11. A non-consumable electrode type as claimed in claim 1, further comprising a judgment means for judging the quality of the arc joining result, wherein the torch is cleaned when joining failure occurs or occurs continuously. Arc joining equipment. 12. The non-consumable electrode type arc welding apparatus according to claim 1, wherein the control means repeats detachment and insertion of the torch from inside the brush when the brush rotates or vibrates.