JP2767411B2 - Welding slag removal apparatus and method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention belongs to the technical field of a welding slag removing apparatus and method suitable for use with automatic continuous welding equipment such as a box column .

[0002]

2. Description of the Related Art In the case of multi-layer welding, it is necessary to remove welding slag for each welding layer or for each of a plurality of passes. In the case of automatic welding by a welding robot or the like, after the welding, multi-needle slugs are manually applied to remove welding slag. In this way, in the means for removing the slag of the welding layer while softly pressing the multi-needle slug against the welding layer with an air cylinder and moving, the tip of the slug is caught by the unevenness of the welding layer, causing bending deformation As a result, the slag removal efficiency is reduced, or the moving operation is stopped due to overload, and stable automation cannot be performed. In addition, when trying to enter from the corner of the main pillar, there is a problem that even more stable automation cannot be performed because the chisel is bent and deformed by being caught in the corner and the chisel protrudes while turning. Was. (See, for example,
No. 285646)

[0003] An object of the present invention is to provide a method for moving along a welding layer.
It is an object of the present invention to provide an apparatus and a method capable of preventing bending deformation of a multi-needle spring generated when turning around a corner of a main pillar and improving the efficiency of removing slag at a welding portion.

[0004]

Means for Solving the Problems The above-mentioned problem is solved by a reciprocating movement following a welding groove line by a driving means on a pedestal having a rectangular frame-like planar shape surrounding the outer periphery of the main pillars. A possible guide is mounted on the guide, and the guide is advanced in a direction perpendicular to the welding groove of the main column, the welding layer is intermittently soft-pressed to remove and remove the slag, and at a constant stroke, A slag removing means provided with an operating means for retreating is provided.On the other hand, the operating means has an action of retreating the slag removing means by a signal of a position where the advance of the slag removing means has penetrated at the corner of the main pillar, Further, the driving means is achieved by a configuration in which the slag removing means is switched to the reverse driving by a position signal after making one round of the main pillar. The above object is achieved by providing slag removing means which moves along the welding groove on a pedestal having a rectangular frame shape so as to surround the outer periphery of the main pillars, and the slag removing means moves forward and backward. When the slag of the welding layer is peeled and removed, the welding layer slag is peeled and removed from a fixed point set in the middle of one side a of the main pillar, and the slag removing means at a position where the slag removing means has penetrated the first corner portion of the main pillar. move with retracts the slag removal means by a signal, the first stroke allowed to the side a 90 ° pivot provided adjacent to the side b direction, the deslagging means to the set fixed point in the middle portion of one side b of the main pillar The welding layer slag is peeled and removed from this fixed point, and the slag removing means retreats the slag removing means by a signal at a position passing through the second corner portion of the main pillar,
This slag removing means is moved in the direction of one side c connected to the side b.
0 ° pivoted to the second stage, the slag peeling and removing the main column sides b, c, performed in the order of d, the position of the signal penetrates the fourth corner portion slag removal means is in the sides d end of the main post ,
That is, the third step in which the slag removing means is moved backward by the position signal after the slag removing means makes one round of the main pillar, and the slag removing means is moved in the direction opposite to the first to third steps.
And a fourth step of peeling and removing the welding layer slag remaining on each side in the order of d, c, b, and a of the main column by the same operation as the first to third steps . This is achieved by:

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS With reference to the drawings, an embodiment of the device of the present invention and details of the device used in carrying out the method of the present invention will be described. 1 is a plan view of the apparatus of the present invention, FIG. 2 is a perspective view, FIG. 3 is an enlarged front view of a main part, and FIG. 4 is an explanatory view showing a procedure of a method of the present invention.

The details of the welding slag removing apparatus A of the present invention will be described with reference to FIGS. 1 shown in FIGS. 1 and 2
Is a main column having a box structure, and the outer periphery of the welding groove 2 of the main column 1 is surrounded by a pedestal 3 having a rectangular frame shape in plan view. As is clear from FIG. 1, the pedestal 3 is constituted by a U-shaped base frame 3a and an opening / closing frame 3b for opening and closing the opening of the base frame 3a. Omitted)
It is possible to carry it out, carry it into the work floor, open the open / close frame 3b, guide the main pillar 1 into the pedestal 3, and then guide the open / close frame 3b.
Is closed so as to surround the lower part of the outer periphery of the welding groove 2 of the main column 1. Inside the pedestal 3 of the frame structure, a hollow portion 4 having an inner edge 3c wider than one side length of the main column 1 is formed, and the main column 1 is set in this hollow portion 4. A bent edge 3d having a relatively large radius of curvature is formed at a corner of the inner edge 3c so that a guide body described later can smoothly turn, and a rail 5 is protruded from the inner edge 3c. In addition, a rack 6 shorter than the rail 5 is provided on the entire outer surface of the rail 5.

Reference numeral 7 shown in FIGS. 1 to 3 denotes a guide which runs on the rail 5 by itself.
, A wheel 8 having a grooved structure for traveling. On one side of the guide body 7, a motor 9 is mounted downward.
Gear 1 provided at the lower end of shaft 10 with motor 9 facing downward
1, a shaft 12 for supporting the upper end on one side bottom plate of the guide body 7
A large-diameter gear 13 provided at an intermediate portion of the motor 9 is engaged so that the reduced rotation of the motor 9 is transmitted to the shaft 12, and a small-diameter pinion 14 meshed with the rack 6 is provided at the lower end of the shaft 12. The guide member 7 is configured to travel on the rail 5 slowly. Reference numeral 15 denotes a dog having a cam structure provided at an intermediate portion of the shaft 12, and a sensor 16 such as a proximity switch is disposed on a side wall of the guide body 7 corresponding to the dog 15 so as to face the dog. A detection signal of the dog 15 is issued from the sensor 16 for each rotation of the dog 15.

A recess 17 having an axis perpendicular to the axis of the welding groove 2 of the main column 1 is formed in the upper portion of the guide body 7. A moving block 19 equipped with a multi-needle sledge (slag removing means) 18 having an axis perpendicular to the axis is fitted and installed so as to be able to move forward and backward. An air cylinder 20 connected to the rear of the moving block 19 is provided on the rear wall of the guide 7. The air cylinder 20 is actuated by the dog 15 detection signal from the sensor 16, and the moving block 19,
That is, the multi-needle sledge 18 is temporarily retracted quickly. Specifically, each time the dog 15 is rotated once, that is, the pinion 14 provided on the shaft 12 is rotated by about 20 mm through the guide body 7 by the rotation of the pinion 14, the welding groove 2 is welded. Quickly withdraw from the layers,
At the time when the guide 7 moves about 20 mm, the tip of the multi-needle screw 18 is again softly pressed against the weld layer by the action of the air cylinder 20 so that the weld layer slag is peeled off and removed about every 20 mm. . The welding slag removing device A is configured as described above.

[0009]

[Description of Slag Removal Method] Next, a welding slag removal method using the welding slag removal device A described above will be described with reference to FIG. Guide 7, that is, multi-needle slug 18 is line X
When the multi-needle screw 18 reaches a fixed point B set in the middle of one side a of the main pillar 1, the air cylinder 20
The multi-needle flats 18 are advanced by the operation described above, and the surface of the welding layer is softly pressed at the tip thereof to peel and remove the welding layer slag. Then, while maintaining this soft pressurized state, the pinion 14
By the action of the air cylinder 20 according to the signal of the sensor 16 which has detected the dog 15 at the time when the dog 15 has moved by about 20 mm, the multi-needle screw 18 is rapidly retracted, and the next sensor 1
6 detects the dog 15, the air cylinder 20 advances, and softly presses the welding layer slag to separate the slag.
The operation proceeds while repeating this operation, and the slag removing step 101 ends, and the multi-needle slug 18 reaches the first corner portion of the main pillar 1. Then, the advance of the multi-needle flat 18 is retracted by the action of the air cylinder 20 from a signal at a position penetrating the first corner portion, for example, a signal at a position emitted from the encoder at the corner portion. It is maintained for a certain time. During this time, the guide body 7 with the multi-needle slug 18 turns by 90 ° due to its advance to reach the side b of the main pillar 1,
After a certain period of time, the multi-needle slug 18 advances again when it reaches the point B on the side b, and performs the same removal and removal of the welding layer slag as described above.
02, the multi-needle sling 18 turns 90 ° to the second corner of the main column 1. Then, on the sides c and d of the main pillar 1, the same operation as the slag removal is performed for the steps 103 and 104. At the end of the stroke 104, a signal indicating the position at which the multi-needle slug 18 has penetrated the fourth corner of the main pillar is received, and the multi-needle slug 18 is retracted by the action of the air cylinder 20. As described above, the signal at the position penetrating the first to fourth corners of the main pillar 1, that is, the multi-needle screw 1
The driving signal is generated by the position signal after the circuit 8 has made one round of the main pillar 1.
That is, the motor 9 is driven in the reverse direction, and the multi-needle stud 18
Move along. When the fixed point B is reached, the multi-needle screw 18 advances by the action of the air cylinder 20, and the tip of the multi-needle screw 18 is softly pressed against the surface of the welding layer to remove and remove the welding layer slag.
Then, steps 105, 106, and 10 are performed by the same operation as described above.
At 7 and 108, the remaining welding layer slag was peeled off and removed.
At 08, the multi-needle sledge 18 is stopped from retreating by a signal at a position penetrating the fourth corner, and peeling and removal of all the welding layer slag is completed.

[0010]

According to the configuration of the present invention as described above,
The following effects can be obtained. (A) The slag removing means is soft-pressed to the welding layer every short and short distances, so that the slag can be removed without being caught by the unevenness of the welding layer. Since the slag removing means is retracted by the part detection signal, the slag removing means is not bent and deformed, and the slag removing efficiency can be improved. (B) The automation of slag removal is stable, and the automation of multi-layer welding can be automated, which is particularly suitable for welding the welding groove of the main pillars having a box structure.

[Brief description of the drawings]

FIG. 1 is a plan view of the device of the present invention.

FIG. 2 is a perspective view of the device of the present invention.

FIG. 3 is an enlarged front view of a main part of the device of the present invention.

FIG. 4 is an explanatory view showing a procedure step of the method of the present invention.

[Explanation of symbols]

 Reference Signs List A Welding slag removal device B Fixed point a Side of main column b Side of main column c Side of main column d Side of main column 1 Main column 2 Weld groove 3 Base 3a Base frame 3b Open / close frame 3c Inner edge 3d Bending edge 4 Cavity Part 5 Rail 6 Rack 7 Guide 8 Wheel 9 Motor 10 Shaft 11 Gear 12 Shaft 13 Large Diameter Gear 14 Pinion 15 Dog 16 Sensor 17 Concave Groove 18 Multi Needle Wire 19 Moving Block 20 Air Cylinder

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B23K 37/08 B23K 9/00 501 B23K 9/095 501 B23K 9/12 331 B23K 9/32

Claims (2)

(57) [Claims] 1. A guide member, which is configured to surround the outer periphery of a main column and has a rectangular frame-like planar shape and is capable of reciprocating along a welding groove line between the main columns by a driving means. On the guide body, operating means for advancing in the direction orthogonal to the welding groove of the main column, intermittently soft-pressing the welding layer to peel off and remove slag, and rapidly retreating at a constant stroke is provided on the guide body. The operating means has a function of retracting the slag removing means by a signal of a position where the advance of the slag removing means has penetrated at the corner of the main pillar, and the driving means has Wherein the slag removing means can be switched to reverse drive by a position signal after making one round of the main pillar. 2. A slag removing means provided on a pedestal having a rectangular frame shape so as to surround the outer periphery of the main column, the slag removing means moving along the welding groove of the main columns, and removing the slag. When the slag of the welding layer is peeled and removed by the reciprocating action of the means, (a) the slag of the welding layer is peeled and removed from a fixed point set in the middle of one side a of the main pillar, and the slag removing means is the first pillar of the main pillar. together retracts the deslagging means the position of the signal penetrates the corner portion, the first stroke allowed to 90 ° pivot provided adjacent to the one side direction b to the side a, the middle portion of one side b of (b) a main column The slag removing means is moved to the set fixed point, the welding layer slag is separated and removed from the fixed point, and the slag removing means retreats the slag removing means by a signal at a position passing through the second corner portion of the main pillar, This slug Side c continuing the removed by means to the side b
Second step to 90 ° pivoted, (c) line the slag peeling and removing the primary posts each side c, in the order of d
There, the fourth position of the signal penetrates the corner portion of the slag removal means is in edge d end of the main column, that is, the retract slag removal means by a position signal after deslagging means has one round the mainstay Step ( 3 ) , (d) the slag removing means is in the opposite direction to the first to third steps
In the same direction as the first to third steps
The main pillars are left on each side in the order of d, c, b, and a.
And a fourth step of peeling and removing the welded layer slag .