JPH09327773A - Weaving device for automatic welding equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust the weaving width with simple constitution. SOLUTION: A weaving device in an automatic welding equipment, in which a welding torch is arranged on a traveling truck, is provided with a torch holder, a torch drive motor, and a torch moving width adjusting device 6. The torch moving width adjusting device 6 comprises a first oscillation lever 8 to be oscillated in the depth direction of a groove arranged in a casing, a second oscillation lever 9 to be oscillated in the width direction of the groove, and a torch holder supporting piece 7. The respective intermediate parts of the oscillation levers 8, 9 are formed on the supporting point of oscillation, and each position of the supporting point of oscillation is displaceable. The second oscillation lever 9 is interlockingly connected to a holder holding rod 14 to be connected to the torch holder 4, and the first oscillation lever 8 is interlockingly connected to a supporting cylinder 16 of the holder holding rod 14 respectively. The first oscillation lever 8 is oscillated at the speed twice as that of the second oscillation lever 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weaving device in an automatic welding device for welding a groove formed on a welding base material while weaving the same, and particularly to a weaving device in a width direction of the groove and a depth direction of the groove. The present invention relates to a weaving device for weaving in a direction.

[0002]

2. Description of the Related Art Conventionally, as an automatic welding device for welding while weaving in a biaxial direction, a welding torch is moved in and out in the depth direction of the groove groove and the welding torch is swung in the width direction of the groove groove. The thing which made it do is proposed.

[0003]

However, in the conventional two-dimensional weaving mechanism, since the moving movement of the welding torch and the swinging of the welding torch are performed by separate drive motors, the swinging of the welding torch is performed. There is a problem that the control for driving in synchronism with the movement of the welding torch is complicated.

It is an object of the present invention to provide a weaving device of an automatic welding device which can adjust the weaving width with a simple structure.

[0005]

To achieve the above object, the present invention comprises a torch holder, a torch drive motor, and a torch movement width adjusting device for interlockingly connecting the torch holder and the torch drive motor. The torch movement width adjusting device includes a first swing lever that swings in the depth direction of the groove in the casing, a second swing lever that swings in the width direction of the groove, and a support for the torch holder. It is configured by arranging a tool and both rocking levers with the middle part as a rocking fulcrum,
One end is formed as the input part and the other end is formed as the output part.Each swing fulcrum is configured to be movable along the length direction of the lever shaft of the swing lever, and the The arm ratio between the arm length up to and the arm length from the swing fulcrum to the output section can be changed,
Each input portion of each rocking lever is interlocked with an eccentric pin protruding from the rocking drive wheel, and each rocking drive wheel is interlockingly connected to a torch drive motor through a gear transmission, and the gear transmission is The rocking drive wheel engaged with the first rocking lever is configured to rotate twice while the rocking drive wheel engaged with the two rocking lever makes one rotation. It is composed of a holder holding rod that can move forward and backward in the depth direction of the groove and a rod support cylinder that supports the holder holding rod so that the holder holding rod can move forward and backward, and the output part of the first swing lever is supported by the rod. It is characterized in that the output part of the second swing lever is linked to the holder holding rod while being linked to the cylinder.

[0006]

In the present invention, the welding torch in the automatic welding apparatus is moved by two swing levers swinging in the planes orthogonal to each other, and these two swing levers are driven by the same drive motor. Since they are driven synchronously by receiving the driving force, the movement control of the groove of the welding torch in the width direction and the depth direction can be easily performed and the two-dimensional weaving can be performed. Further, since the swinging fulcrum of each swinging lever is configured to be movable, the swinging width in the width direction and the depth direction of the groove can be freely set.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show one embodiment of the present invention. FIG. 1 is a schematic perspective view of a main part taken out, FIG. 2 is a schematic perspective view of an automatic welding device, and FIG. 3 is a cross-sectional plan view of a weaving device. 4 is a sectional view taken along line IV-IV in FIG. 3, and FIG. 5 is VV in FIG.
6 is a sectional view taken along line VI-VI in FIG. This automatic welding device is equipped with a welding torch (3) via a weaving device (2) on a traveling carriage (1) which is movable along a groove (B) formed in a welding portion of a welding base material. I am doing it.

This weaving device (2) comprises a welding torch.
Torch holder (4) for holding (3) and torch drive motor (5) for weaving the welding torch (3)
And a torch movement width adjusting device (6) mounted between the torch drive motor (5) and the torch holder (4).

The torch movement width adjusting device (6) comprises a holder support (7) for fixing the torch holder (4) and a groove (B).
First swing lever (8) that can swing in the depth direction of the
The second swing lever (9) swingable in the width direction of (B) and both swing levers (8) and (9) in response to the operation of the torch drive motor (5).
Rocking drive wheels (10) and (11) for individually rocking, and a gear transmission system (12) for transmitting the driving force of the torch drive motor (5) to each rocking drive wheel (10) (11). ) And are arranged in a casing (13).

The torch holder support (7) has a holder holding rod (14) for fixing the torch holder (4) at the tip,
This holder holding rod (14) is composed of a rod support cylinder (16) that supports the holder bushing rod (14) so that it can be pulled out linearly via a ball bush (15). Two
The swing lever (9) and the rod support cylinder (16) are linked to the first swing lever (8).

The first swing lever (8) is provided with a fulcrum pin moving groove (17) in the lever longitudinal direction on a surface which is perpendicular to the surface of the welding base metal, and the fulcrum pin moving groove (17) is formed in the groove. First swing lever
Fit the fulcrum pin (18), which is the swing fulcrum of (8),
It is formed in 9). This fulcrum pin (18) is attached to the sliding block (2
(0), and the sliding block (20) is formed on the inner surface of the casing (13) by rotating the screw rod (21) that is screwed into this sliding block (20). Being a guide
By making parallel movement along (22), the position of the fulcrum pin (18) in the fulcrum pin moving groove (17) can be adjusted to change the oscillating fulcrum position of the first oscillating lever (8). There is.

Then, an interlocking groove (24) into which an eccentric pin (23) protruding from the rocking drive wheel (10) is fitted is rocked at one end of the first rocking lever (8). It is formed in the input section (25) by being formed in a direction orthogonal to the plane. Also, the fulcrum pin moving groove (17)
The one end of the link rod (26) is attached to the other end of the rod so as to be rotatable about an axis orthogonal to the swing plane, and the other end of the link rod (26) is fixed to the rod support cylinder (16) for output. It is formed on the part (27). The eccentric pin (23) is formed in a middle-high arc shape whose outer peripheral surface in the axial direction becomes a part of a circle centering on the axial center. Therefore, the rod support cylinder (16) swings in the depth direction of the groove (B) by the swing of the first swing lever (8), and the swing fulcrum of the fulcrum pin (18). The swing width of the rod support cylinder (16) can be changed by changing the position.

On the other hand, the second swing lever (9) has a fulcrum pin moving groove (28) along a longitudinal direction on a surface parallel to the surface of the welding base material.
Is formed in the fulcrum portion (30) by fitting a fulcrum pin (29) which is a fulcrum fulcrum of the second oscillating lever (9) into the fulcrum pin moving groove (28). . The fulcrum pin (29) is provided so as to project from the sliding block (31), and the sliding block (31) is rotatably operated by rotating the screw rod (32). 31) moves in parallel along the guide (33) formed on the inner surface of the casing (13), adjusts the position of the fulcrum pin (29) in the fulcrum pin moving groove (28), and then performs the second swing. The swing fulcrum position of the lever (9) can be changed.

An interlocking groove (35) into which an eccentric pin (34) projecting from the rocking drive wheel (11) is fitted is formed at one end of the lever (9) at right angles to the rocking plane. Form the input part (3
It is formed in 6). Further, a connecting rod (37) is provided on a surface parallel to the swinging direction at the other end of the second swinging lever (9), and the connecting rod (37) has a connecting rod (38). The ball bush (39) is rotatably mounted on the output portion (40). The other end of the connecting rod (38) is fixed to the base end of the holder holding rod (14). Further, the support bracket (41) is fixed to the connecting rod (37) with the ball bush (39) sandwiched between the support bracket (41) and the second swing lever (9) on the inner surface of the casing (13). The guide member (42) is formed so as to be parallel to the swinging direction of the holder holding rod (14) so that the holder holding rod (14) can move in parallel with the moving direction. The eccentric pin (34) is formed in a middle-high arc shape whose outer peripheral surface in the axial center direction forms a part of a circle centered on the axial center. Therefore, due to the swing of the second swing lever (9), the holder holding rod (14) swings in the width direction of the groove (B), and the swing pin position (29) shifts the swing fulcrum position. By changing it, the width of the holder holding rod (14) can be changed.

The gear transmission system (12) is composed of rocking drive wheels (10) (11).
The rotary shaft (43) (44) that fixes the one end to this rotary shaft (43)
The gears (45) and (46) fixed to the other end of (44), respectively, and the second
A worm gear (47) fixed in the middle of a rotary shaft (44) which is a drive system of the swing lever (9), a worm (48) meshing with the worm gear (47), and a rotation of the worm (48). A gear that is composed of an endless transmission (not shown) that interlocks the shaft and the torch drive motor (5) and is fixed to the drive rotation shaft (43) of the first swing lever (8). (45) and second swing lever (9)
It directly meshes with the gear (46) fixed to the drive rotation shaft (44). The pitch diameter of the drive gear (45) of the first swing lever (8) is determined by the drive gear (4) of the second swing lever (9).
It is formed to 1/2 the pitch diameter of 6), and the second swing lever
The first swing lever (8) is configured to swing twice while the (9) swings once, and the torch holder support (7) moves in the width direction of the groove (B). Groove groove during one round trip of
Two reciprocations are possible in the depth direction of (B).

In the weaving device having the above structure, the torch drive motor (5) is moved along with the traveling movement of the traveling carriage (1).
When the torch drive motor (5) is operated, the rotation of the torch drive motor (5) is transmitted to the swing drive wheels (10) and (11) through the gear transmission system (12),
The eccentric pins (23) and (34) projecting from the rotary shaft center of the swing drive wheels (10) and (11) to positions eccentric to the first and second swing levers (8) and (9). ) In the interlocking groove (24) (35), and at that time, each rocking lever (8) (9) is rockingly driven.

As the swing levers (8) and (9) swing, the first swing lever (8) opens the second swing lever (9) in the depth direction of the groove (B). Since the welding torch (3) swings in the width direction of the front groove (B), the welding torch (3) moves and swings in two dimensions. At this time, the rocking fulcrums of both rocking levers (8) and (9) are respectively located at the intermediate portions in the longitudinal direction of the levers, and the rocking fulcrum positions can be changed and adjusted. The swing width at the output part of the levers (8) and (9) can be changed respectively, and the amount of movement of the welding torch (3) in the groove depth direction and groove groove width direction can be adjusted. It will be changed and adjusted.

When the welding torch (3) is supported on the traveling carriage (1) with the torch axis tilted in the traveling direction of the traveling carriage (1), the tip of the welding torch (3) is It will move in three dimensions, and a beautiful beat pattern can be formed.

[0019]

According to the present invention, the welding torch in the automatic welding apparatus is moved by the two rocking levers which respectively rock in the planes orthogonal to each other, and the two rocking levers are driven by the same drive motor. Since the driving force from the welding torch is synchronously operated, movement control in the width direction and the depth direction of the groove of the welding torch can be easily performed, and two-dimensional weaving can be performed. Further, since the swinging fulcrum of each swinging lever is configured to be movable, the swinging width in the width direction and the depth direction of the groove can be freely set.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a main part taken out.

FIG. 2 is a schematic perspective view of an automatic welding device.

FIG. 3 is a cross-sectional plan view of the weaving device.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a sectional view taken along line VI-VI of FIG. 4;

[Explanation of symbols]

1 ... traveling carriage, 3 ... welding torch, 4 ... torch holder,
5 ... Torch drive motor, 6 ... Torch movement width adjusting device, 7
... torch holder support, 8 ... first swing lever, 9 ... second swing lever, 10/11 ... swing drive wheel, 12 ... gear transmission, 13 ... casing, 14 ... holder holding rod, 15 ... straight line Guide mechanism, 16 ... Rod support cylinder, 19/30 ... Swing fulcrum,
25/36 ... input part, 27/40 ... output part, 23/34 ... eccentric pin,
B ... groove groove.

Claims (2)

[Claims] 1. A weaving device for an automatic welding device in which a welding torch (3) is arranged on a traveling carriage (1), which comprises a torch holder (4), a torch drive motor (5), and a torch holder ( 4) and a torch drive motor (5) are interlockingly connected to each other, and a torch movement width adjusting device (6) is provided, and the torch movement width adjusting device (6) is in the casing (13) in the depth direction of the groove. The first swing lever (8) swinging in the direction of the groove, the second swing lever (9) swinging in the width direction of the groove, and the support tool (7) of the torch holder (4) are arranged. Configured, both swing levers
In (8) and (9), the intermediate part is formed on the swing fulcrum (19) (30), one end is formed on the input part (25) (36), and the other end is formed on the output part (27) (40). Each swing fulcrum (19) (30) is configured to be movable along the length direction of the lever shaft of the swing lever (8) (9), and the swing fulcrum (19) (30) Arm length up to input section (25) (36) and swing fulcrum
It is possible to change the arm ratio with the arm length from (19) (30) to the output section (27) (40), and swing each input section (25) (36) of each swing lever (8) (9) respectively. Eccentric pins (23) (3) protruding from the drive wheels (10) (11)
4) in conjunction with each rocking drive wheel (10) (11) to gear transmission (1
2) interlockingly connected to the torch drive motor (5) and the gear transmission (12) is engaged with the second swing lever (9) while the swing drive wheel (11) makes one rotation. The swing drive wheel (10) engaged with the first swing lever (8) is configured to rotate twice, and the support member (7) of the torch holder (4) is formed in the depth direction of the groove. The holder holding rod (14) that can move in and out and the rod support cylinder (16) that supports the holder holding rod (14) so that it can move in and out. Output part (27)
Is connected to the rod support cylinder (16), and the output part (40) of the second swing lever (9) is connected to the holder holding rod (14) in an interlocking manner. . 2. The automatic welding apparatus according to claim 1, wherein the output part (40) of the second swing lever (9) and the holder holding rod (14) are connected via a linear guide mechanism (15). Weaving device.