JPH0358832B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a welding device that uses a consumable electrode wire (hereinafter referred to as a welding wire) and performs welding by appropriately adjusting the tilting state of a welding torch.

In general, in a welding apparatus in which the tilting state of a welding torch is adjustable, a wire reel device capable of freely rewinding the welding wire and the welding torch are often disposed relatively apart from each other. Conventionally, for example, as shown in FIG. 1, a welding wire straightening device 9 and a wire feeding device 8 are disposed near a wire reel device 13, and the exit side of the wire feeding device 8 and the welding torch 1 are arranged in the vicinity of a wire reel device 13.
A flexible wire guide member, ie, a flexible conduit 40, was connected between the ends of the wires. Welding is performed by straightening the welding wire with the straightening device 9 and feeding the welding wire with the wire feeding device 8. By the way, since the flexible conduit 40 is arranged in a suitably curved manner, the welding wire passing through the flexible conduit 40 is not straight, but is fed in a somewhat curved state as if a bending force was applied thereto. Moreover, when the tilting states of the welding torch 10 are different as shown by T ₁ and T ₂ , the shape of the flexible conduit 40 changes as shown by F ₁ and F ₂ , which causes the welding wire to be fed to curve. Condition changes. In this way, the feeding direction of the welding wire to the welding torch differs depending on the tilting state of the welding torch shown by T ₁ and T ₂ , so the positional relationship between the welding torch and the welded line in the case of T ₁ is If T ₂ was placed in this condition, the actual welding part would be displaced from the line to be welded, making it impossible to perform good welding. On the other hand, a device in which the arrangement state shown in FIG.
A device in which a flexible conduit is disposed between the vicinity of the wire reel device 13 and the entrance side of the correction device has also been implemented. In this device, the straightening device, wire feeding device, and welding torch are tilted integrally, so even if the tilting state of the welding torch is changed, the feeding direction of the welding wire hardly changes. However, in general, welding equipment requires, for example, an adjustment mechanism to finely adjust the position of the welding torch, support members to support electrical cables connected to the welding torch, and frame structural members of the equipment. Therefore, when the welding torch is tilted, the flexible conduit may come into contact with appropriate structural members of the welding apparatus, resulting in the flexible conduit being forcibly bent. In this case, the wear of the flexible conduit is accelerated and it must be replaced with a new flexible conduit in a short period of time. The welding wire feeding force was reduced accordingly, causing welding wire feeding failure. Furthermore, devices shown in FIGS. 2 and 3 have also been proposed. That is, the frame body 41 is provided with two mutually orthogonal shaft bearing parts, the arm 42 is placed on one side, and the mounting bracket 4 of the wire reel is placed on the other side.
3 are rotatably and positionably supported. A wire straightening device 9, a wire feeding device 8 and a welding torch 10 are disposed at the free end of the arm 42, and a wire reel device 13 is disposed at the free end of the mounting bracket 43. Therefore, the welding torch 10 and the like can be tilted on the A-A plane with the shaft bearing between the arm 42 and the frame 41 as the center of rotation, while the wire reel device 13 is rotatable around the shaft support between the mounting bracket 43 and the frame 41. With B- as the center of rotation
It is rotatable on the B plane. In the conventional device, when the welding torch 10 is adjusted to tilt as appropriate around the shaft bearing of the arm 42 and the frame 41, a wire reel device is used to ensure smooth unwinding of the welding wire. The position of 13 is rotated appropriately. In this way, the welding torch and wire reel device are arranged horizontally apart,
In addition, since the A-A plane on which the welding torch tilts and the B-B plane on which the wire reel device rotates are orthogonal to each other, there is a gap between the unwinding position of the welding wire in the wire reel device and the entry side position of the wire straightening device. The welding wire present in the welding wire is formed into a fairly large curved shape with an upward convexity. By the way, as mentioned above, welding equipment is generally equipped with various auxiliary structural members, so it is conceivable that the curved part of the welding wire comes into contact with appropriate structural members, and moreover, during welding, welding Since the wire is energized, contact with the welding wire may cause a short circuit, which may not only damage various parts of the welding device but also cause personal injury. In addition, in a welding device equipped with various component parts, when the wire reel device is installed at an appropriate position, the wire reel is replaced at this fixed position, so when replacing the wire reel, other components of the welding device are There were concerns that the parts would get in the way and workability would be poor.

An object of the present invention is to provide a welding device that eliminates the above-mentioned conventional drawbacks.

The present invention will be explained in detail below with reference to the illustrated embodiments. In FIGS. 4 to 8, reference numeral 1 denotes an object to be welded. This object to be welded consists of, for example, a horizontal member 101 and a vertical member 102, and the fillet portion thereof is formed to be a weld line 103. . Reference numeral 2 denotes a truck body, and arms 301 and 302 of different lengths are provided at the front and rear ends of the truck body 2, respectively, protruding toward the workpiece, and the tips of the arms 301 and 302 are each provided with a spherical body or A guide member 4 made of a circular body is rotatably supported. Rotatable wheels are supported on the truck body 2, and the truck body 2 is driven, for example, in the _Y1 direction by an appropriate driving means (not shown). In this case, the arm 3 that is shorter than the trolley body 2
01 is arranged in the _Y1 direction. As a driving means, an appropriate drive device may be provided on the main body of the trolley, or a winding winch, for example, may be provided at the front position in the _Y1 direction, and the free end of the flexible member to be wound up by this winch may be moved to the main body of the trolley. You can also connect them. 5 is a sliding mechanism placed on the trolley body 2;
For example, the slider 502 is moved in the X direction by rotating a handle 501 disposed at the end of a screw shaft to which the screw is fitted. 6 is a first bracket fastened to the slider 502, 7 is a second bracket rotatably and positionably supported on the first bracket 6, and 8 is rotatable at the free end of the second bracket 7. and a wire feeding device supported in a freely positionable manner; 9 is a wire straightening device disposed on the inlet side of the wire feeding device 8; 10 is a welding torch disposed on the outlet side of the wire feeding device 8; For example, this welding torch 10 is disposed such that its position can be freely adjusted in the axial direction of the welding torch 10 via an adjustment device 11. For example, two sets of welding heads 12 consisting of the above-mentioned welding heads 5 to 11 are arranged spaced apart from each other in the Y direction. 13 is a wire reel device, and this wire reel device 13 is composed of a wire reel 14 wound with a welding wire, and a support device 15 that rotatably supports this wire reel 14. 16 is a first supporting wire reel device 13;
In the illustrated case, two sets of wire reel devices 13, 13 are integrally supported by the supporting member. 17
is a second support member that rotationally supports the other end of the first support member 16; in the illustrated case, the second support member 17 is an integrally formed disk-shaped member 171;
and a columnar member 172, and a collar 173 for regulating the first support member 16 in the Y direction. 18, 18, . . . are substantially U-shaped engagement grooves bored, for example, in the outer circumference of the end portion of the first support member 16, and are arranged, for example, at equal intervals over half the circumference. Reference numeral 19 denotes a locking member rotatably supported by the second support member 17, and when the locking member 19 is aligned with any of the engaging grooves 18, 18, . . . It is configured to be able to be freely engaged and detached from. The engagement groove 18 and the locking member 19 constitute a positioning mechanism 20 for maintaining the relative positions of the first and second support members 16 and 17. In order to ensure positioning, it is preferable to provide the free end of the locking member 19 with, for example, a wing nut. 21, 21 is the second support member 17
The connecting fittings 21, 21 are connected to the frame 24 which is erected on the trolley body 2.
It is slidable and positioned at an appropriate position in the Z direction by the fastening member 22. 16, 17 above,
20, 21, and 22 constitute a variable position mechanism 23 for a wire reel device. 25 is an operation box supported by the frame 24.

In the above configuration, the rotational states of the shaft bearings of the first and second brackets 6 and 7 are changed as appropriate, and the rotational states of the second bracket 7 and the wire feeding device 8 are also changed. As shown in FIG. 9, the welding torch in the initial state indicated by T ₁ is tilted and adjusted as indicated by T ₂ and T ₃ . In this case, for example, the wing nut is loosened to make the locking member 19 stand up, and the state of engagement between the locking member 19 and the engagement groove 18 is released. After this, the first support member 16 is rotated clockwise in _FIG . and the first and second support members 16, 17 are positioned relative to each other. In this way, as shown in FIG. 9, the welding torch 10
When the tilt is adjusted from the T ₁ state to the T ₂ state,
Since the wire reel device 13 is also rotationally adjusted from the state R ₁ to the state R ₂ , the unwinding state of the welding wire is substantially the same regardless of whether the welding torch is tilted. Further, when the welding torch 10 is set to the state indicated by _T3 , the first support member 16 is further rotated clockwise and positioned in the same manner as described above in FIG. In this case, the welding wire is cut near the entrance side of the wire straightening device 9, and the
The loading direction of the wire reel 14 with respect to the wire reel 14 is reversed, and then the welding torch 10 and the wire reel device 13 are placed at the positions indicated by T ₃ and R ₃ .
In this state, or prior to this state, the free end of the welding wire is inserted into the wire feed device 8 via the wire straightening device 9. When attaching and detaching the wire reel 14 to and from the support device 15, various constituent members of the welding device, such as the operation box 25 in the illustrated case, often get in the way. Therefore, in FIG. 8, the first support member 16 is rotated clockwise so that the wire reel device 13 is positioned outside the welding device as indicated by R ₄ in FIG.
and positioning the second support members 16, 17. In this state, since there are no other interfering objects, the wire reel 14 can be attached and detached easily and quickly. As shown in FIG. 9, the position of the welding torch 10 is tilted to T ₁ , T ₂ or T ₃ and the wire reel device 1 is tilted to correspond to this.
3 is rotated to the R ₁ , R ₂ or R ₃ position,
In this state, welding is performed while the truck body 2 travels, for example, in the _Y1 direction. Note that, for example, when the welding torch 10 is set to be in a substantially horizontal state, the wire reel device 13 and the wire straightening device 9 are extremely separated in the vertical direction. In this case, by operating the fastening member 22, the connecting fittings 21, 21
and the frames 24, 24 are made slidable, and the connecting fittings 21, 21 are moved downward, that is, in the _Z1 direction.
If the connecting fittings 21, 21 are moved in this way,
The variable position mechanism 23 and the wire reel device 13 also move together. With the wire reel device 13 appropriately lowered, the fastening members 22, 22 are operated to integrally fasten the connecting fittings 21, 21 and the frames 24, 24. In this case, in Figure 4,
The first support member 16 is appropriately rotated and positioned relative to the second support member 17. For example, the wire reel device is positioned at the position indicated by _R5 in FIG. 10 to 12, an annular protrusion is formed at the end of the first support member 16 in the _Y1 direction near the shaft bearing portions of the first and second support members 16, 17, and this annular protrusion Engagement grooves 18, 18, . . . are provided at appropriate intervals in the circumferential direction. 26 is the second support member 17
The piece is movable in the Y direction while being restrained by the piece, and locking members 19, 19 that can be engaged with the engagement grooves 18, 18 are provided at the ends of the piece in the _Y2 direction. Further, this piece 26 is pressed by a spring member 27 whose one end portion is locked to the second support member 17, and is always biased toward the first support member 16, that is, toward the _Y2 direction. The above 18, 19, 26, and 27 constitute a positioning mechanism 20 for maintaining the relative positions of the first and second support members 16, 17. Note that the first support member 17
When changing the relative position of the support member 16 to
1 displaces the piece 26 in the Y ₁ direction and engages the engagement groove 1.
8 and the locking member 19, and then the first support member 16 is rotated appropriately and the piece 26 is released, the engagement groove 18 and the locking member 1 are released.
The first support member 16 is positioned at a position where the first support member 9 engages with the first support member 16 . In this way, if the locking member 19 is always urged to engage with the engagement groove 18, the engaged state will always be maintained _.
As long as the first support member 16 is not operated in the direction, the position of the first support member 16 will not be changed, and therefore there is no risk that the wire reel device or the like will fall and be damaged. In addition, the first
In figure 0, if an electromagnet is used to move the piece in at least the _Y1 direction, the piece can be moved manually.
There is no need to maintain the first support member 16 in the _Y1 direction, and therefore the first support member 16 can be easily rotated.

In the above description, the engagement groove 18 and the locking member 19
and can be arranged in opposite states. Furthermore, if the position of the second support member 17 relative to the frame body 24 can be freely set in the vertical direction via the connecting fitting 21, even if the welding torch is set vertically, horizontally, or in an appropriate inclined state, the wire The position of the reel device can be arranged to correspond to a suitable welding torch position. In this case, if the moving direction of the connecting fitting 21 with respect to the frame body 24 is set to the Z direction, the frame body 24 can be manufactured easily.However, in spite of this, in FIG. It can be configured to be movable on a straight line or curved line tilted appropriately in the counterclockwise direction. Of course, when the tilting state of the welding torch is not drastically changed, such as in horizontal welding, the position of the second support member 17 can be fixed with respect to the frame 24. Furthermore, in contrast to the case where a single welding head is used, as shown in FIGS. 4 and 5, two sets of welding heads 12 are used, and the tilt setting positions of the respective welding torches with respect to the workpiece 1 are kept in the same state. In the case of welding, if the two wire reel devices 13 are simultaneously positioned using the single variable position mechanism 23, the positioning work of the wire reel devices can be easily and quickly performed. In this case, if two sets of variable position mechanisms are provided to separately support each wire reel device, the tilting state of each welding torch can be set separately, or the interval between welding torches can be changed as appropriate. This is more advantageous because the position of each wire reel device can be set in accordance with the tilt setting state of each welding torch. Although the welding head, wire reel device, etc. have been described above as being mounted on the trolley body, it is of course possible to fix the welding head and the like and to transport the workpieces for welding.

As described above, according to the present invention, the tilting planes of the straightening gear feeding device and the welding torch, which are respectively disposed on the inlet and outlet sides of the wire feeding device, are parallel to the rotating plane of the wire reel device. , that is, C ₁ −C ₁ plane,
_The welding _torch Even if the set tilt position of the welding wire is changed, the unwinding state of the welding wire hardly changes, and the unwinding position of the wire reel device and the entry side of the wire straightening device are brought as close as possible. Therefore, the welding wire between the wire reel device and the wire straightening device never comes into contact with other components of the welding device, and therefore, unlike the conventional method, there is no chance of the welding wire coming into contact with other components of the welding device, which could cause short circuit accidents or personal injury. There is no risk of it happening. Furthermore, since a flexible conduit is not required, there is naturally no need to pay attention to the replacement work of the flexible conduit, and the wire reel device can be moved to a retracted position where it will not be disturbed by other components of the welding device. Since the wire reel can be replaced by rotating the wire reel, the wire reel can be replaced easily and quickly.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a conventional device, FIG. 2 is a front view of main parts of another conventional device, FIG. 3 is a plan view of FIG. 2, and FIG. 4 is a front view showing an embodiment of the present invention. Fifth
The figure is a right side view of Fig. 4, and Fig. 6 is the - of Fig. 5.
Line sectional view, Fig. 7 is a longitudinal sectional view of the main part of Fig. 5, Fig. 8
9 is a diagram illustrating the operation of FIG. 4, FIG. 10 is a view corresponding to FIG. 7, and FIG. Figures 11 and 12 are lines XI-XI and XII-XII in Figure 10, respectively.
FIG. 8...Wire feeding device, 9...Wire straightening device, 1
0... Welding torch, 12... Welding head, 13... Wire reel device, 16... First support member, 17... Second support member, 18... Engagement groove, 19... Locking member,
20...Positioning mechanism, 23...Position variable mechanism.

Claims (1)

[Claims] 1. A wire reel device capable of freely rewinding the welding wire, and a wire feeding device that feeds the welding wire while pressing it against the feeding roller using a pressure roller, respectively, provided on the input side and the output side. A welding device comprising a wire straightening device and a welding torch, in which the tilting state of the welding torch can be freely adjusted by changing the arrangement state of the wire feeding device on a plane orthogonal to the axis of the feeding roller, A first support member that supports a wire reel device at one end, and the other end of the first support member is rotated so that the wire reel device changes its position on a plane perpendicular to the axis of the feed roller. A wire comprising a second support member that freely supports the wire, and a positioning mechanism that relatively positions the first support member and the second support member at a position where the first support member is appropriately rotated. A position variable mechanism for the reel is provided, and the first member is rotated and positioned so that the rewinding position of the wire reel device is near the extension of the axis of the welding torch in accordance with the set position of the welding torch. A welding device characterized by: 2. The positioning mechanism includes an engagement mechanism disposed at an appropriate interval on the circumference of one of the first and second support members, and an engagement mechanism disposed on the other support member to engage the engagement mechanism. The welding device according to claim 1, comprising a locking member that can freely engage the groove.