JP3118546B2 - Auxiliary device for welding and cutting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding / cutting auxiliary device suitably used for welding, cutting, gouging or the like of a work using a torch.

[0002]

2. Description of the Related Art In the case of performing cutting including welding and gouging, an example of welding will be described. In general, an operator holds a welding torch by hand and sets a work line (e.g., a groove or the like) set on a work surface. ). The important points at this time are to move the welding torch at a constant speed and to keep the positional relationship between the tip of the welding torch and the welding position properly.

[0003]

It is a very difficult task to move the welding torch at a constant speed while maintaining a proper positional relationship with the workpiece. Also, the welding torch is quite heavy, and it is a difficult task to support it at a certain height.Especially if you work continuously for a long time, your hands will get tired and tremble. It cannot be held in a proper positional relationship with respect to the workpiece, and the quality of welding is reduced.

Therefore, an automatic welding apparatus has been proposed in which the welding operation is completely automated, but the development is costly, large, heavy and inconvenient to handle. In addition, there is a disadvantage that high-quality welding cannot be performed if a condition setting error during installation or a malfunction occurs during work.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to reduce a burden on an operator by performing a part of the work performed by the operator on behalf of the operator. An object of the present invention is to provide a welding / cutting auxiliary device capable of reducing the quality and improving the quality of a welding operation or the like.

[0006]

Therefore, the welding and welding method according to claim 1 is provided.
The cutting auxiliary device includes a rail arranged parallel to a work line to be welded and cut set on the work surface, a table movably arranged along the rail, and a table arranged along the rail. Moving means for moving at a constant speed,
Supporting means mounted on the table to support the welding / cutting torch, wherein the supporting means is provided around a first rotation axis parallel to the workpiece surface and perpendicular to the moving direction and the first rotation. Each is rotatable around a second rotation axis perpendicular to the axis , and the operator is able to rotate the torch tip.
Support the torch so that you can work while adjusting the position
Wherein the moving means is a plurality of the same shape.
Endless portions with concave portions formed on the inner peripheral surface at regular intervals
Material, and attached to both ends of the rail in the longitudinal direction.
While the endless member is wound around the outer peripheral surface,
A plurality of projections are formed on the outer peripheral surface to be fitted into the recesses.
One of the pair of pulleys
A motor for driving one of the two
The endless member can be clamped and the clamped state released.
Surface that the inner peripheral surface of the endless member contacts.
Has a plurality of protrusions that are fitted into the recesses.
It is characterized by comprising a pair of holding members .

In the welding / cutting auxiliary device according to the first aspect of the present invention, the welding / cutting torch supported by the support means moves at a constant speed in parallel with the working line as the table moves. Therefore, the operator can move the torch to the first and second torches.
The work such as welding can be easily performed simply by rotating the torch around the rotation axis so that the tip of the torch is at an optimum position with respect to the work line (accurately, the work position). That is, since the auxiliary device performs constant-speed movement and weight support of the torch, the operator need only concentrate on adjusting the positional relationship between the tip of the torch and the work position on the work, and the burden on the operator is reduced. At the same time, the quality of work such as welding can be improved. In addition, the above welding and cutting auxiliary devices are endless.
The member is wound around a pair of pulleys and is driven by a motor.
It moves at a constant speed by rotating the pulley. This
In this case, the endless member is placed outside the pulley
The outer surface of the pulley moves because the protrusion on the peripheral surface is fitted.
There is no slippage with the surrounding surface, and
Can move. In addition, the table uses an endless member with a clamping member.
By pinching, it follows the movement of the endless member
Move fast. At this time, the table is formed on the holding member.
Move with the concave part of the endless member fitted in the convex part
Therefore, there is no sliding between the endless member,
It can move at a constant speed. Reliable with this simple structure
The table can be moved. On the other hand, the endless part
When the material is released, the table is independent of the endless member
And become mobile. This makes it possible for workers to use
The table can be immediately moved to the desired position
You. For example, when performing lamination welding, welding one welding layer
When the process is completed, it is necessary to return the table to the beginning again
However, in such a case, the table return time can be reduced,
Working hours can be reduced. All table movements
If the motor is driven, welding work etc.
The moving speed of the torch is several tens cm / min.
Therefore, it takes time to return the table. Also,
To increase the table return speed, a mode that can rotate at high speed
Need to use a large and expensive motor.
Is not preferred.

[0008] The auxiliary device for welding and cutting according to claim 2 is
The support position of the welding / cutting torch by the support means can be adjusted.

In the welding / cutting auxiliary device according to the second aspect, the distance between the work surface and the torch can be appropriately adjusted as the work such as welding progresses. For example, when performing lamination welding, the welding position gradually moves from the bottom of the groove to the surface side, but even in such a case, if the torch is gradually adjusted to move away from the work surface, the torch and the work The distance from the surface (welding position) can always be kept constant, and high-quality welding can be performed.

[0010]

[0011]

[0012]

[0013]

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the welding / cutting assisting device of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an auxiliary device for welding and cutting (hereinafter referred to as “auxiliary device”) 1 according to an embodiment of the present invention.
FIG. 2 is a perspective view of the auxiliary device 1 as viewed from the front side in the moving direction 2, and FIG. In addition, in the following description, the case where it is used for welding work will be described.

The auxiliary device 1 includes a rail 3, a table 4, a moving means 6 including a timing belt 5,
And a support means 8 for supporting the welding torch 7. The rail 3 is an ON / OFF magnet 3 described later.
1 (see FIG. 5), it is detachably arranged on the surface of the work 9 and, more specifically, its longitudinal direction is arranged parallel to a work line 33 (see FIG. 5) to be welded set on the surface of the work 9. In the present embodiment, the working line 33 is set to extend in the horizontal direction. The table 4 is arranged so as to be movable along the rail 3, but is moved at a constant speed in the moving direction (rightward on the paper surface in FIGS. 1 and 2) 2 by the moving means 6 during welding.

The support means 8 is mounted on the table 4 and supports the welding torch 7 so as to be rotatable around a predetermined axis. The structure will be described in detail. On the surface of the table 4, a substrate 10 realized by an L-shaped angle is provided with a long side portion 10.
a is parallel to the surface of the work 9 and the long side portion 10
a so that the longitudinal direction of a is orthogonal to the longitudinal direction of the rail 3
It is fixed using bolts and the like. More specifically, one end of the long side portion 10a having the short side portion 10b is fixed to the surface of the table 4, and the other end side is arranged to protrude outward from the table 4. Therefore, the short side portion 10 b of the substrate 10 extends in the vertical direction with respect to the surface of the table 4 and stands upright, and the surface is substantially parallel to the longitudinal direction of the rail 3. The timing belt 5 is arranged so as to be able to come into contact with the surface of the table 4 near the short side portion 10b. Substrate 1
A first support plate 11 that extends in a direction perpendicular to the surface is fixed to the long side portion 10a by welding or the like. The first support plate 11 is realized by a substantially rectangular flat plate, and its longitudinal direction is orthogonal to the moving direction 2 of the table 4,
In addition, the surface is arranged orthogonal to the surface of the work 9.

A first position adjusting mechanism 12 is attached to one end of the first support plate 11 (the end remote from the table 4). The first position adjustment mechanism 12 moves the entire configuration including the second position adjustment mechanism 13 along the normal direction of the surface of the work 9 by turning the knob 12a.
In addition, the second position adjustment mechanism 13 moves the entire configuration including the second support plate 14 in a direction parallel to the surface of the work 9 and orthogonal to the movement direction 2 by turning the knob 13a. Therefore, after arranging the rail 3 on the work 9, the first and second position adjustment mechanisms 12, 13 are adjusted to
The position of the welding torch 7 can be roughly adjusted. The second support plate 14 is arranged in parallel with the first support plate 11, and a rotation support portion 15 is attached to one end thereof (the end remote from the table 4).

The rotation support portion 15 includes a mounting member 16 and a first
A support shaft 17, a second support shaft 18, and a pair of holding members 19;
a, 19b. The mounting member 16 is fixed to the second support plate 14 and supports the first support shaft 17 so as to be rotatable around the first rotation axis 20. First rotation axis 2
0 is set parallel to the surface of the work 9 and perpendicular to the longitudinal direction of the rail 3 (moving direction 2). At one end of the first support shaft 17, a second support shaft 18 is supported so as to be rotatable around a second rotation axis 21. The second rotation axis 21 is set in a direction orthogonal to the first rotation axis 20. A pair of holding members 1 are provided at the distal end of the second support shaft 18.
9a and 19b are attached. Clamping members 19a, 1
9b clamps the vicinity of the nozzle of the welding torch 7 and tightens the wing nut 20 to fix the welding torch 7 close to each other,
When the wing nut 20 is loosened, the welding torch 7 can be adjusted in position apart from each other. The second support shaft 18 includes a holding member 19.
a, the holding members 19a, 1
The direction in which 9b approaches or separates is set to be parallel to the second rotation axis 21.

Here, the movement of the welding torch 7 by the rotation supporting portion 15 will be described. FIG. 3 is a perspective view showing a state in which the welding torch 7 has been moved from the positions shown in FIGS. 1 and 2, and FIG. 4 is a schematic diagram for explaining the movement of the welding torch 7. The first support shaft 17 is supported so as to be rotatable around a first rotation axis 20. The first support shaft 17 integrally connects the second support shaft 18, the holding members 19a and 19b, and the welding torch 7 with an arrow 2
3 (in a direction approaching the work 9) or in a direction indicated by an arrow 24 (in a direction away from the work 9). As a result, the welding torch 7 can have a forward angle or a backward angle.

The second support shaft 18 is supported so as to be rotatable around a second rotation axis 21.
a, 19b and the welding torch 7 integrally in a direction indicated by an arrow 25 (a direction in which the tip of the welding torch 7 approaches the rail 3).
Alternatively, it is rotated in the direction indicated by the arrow 26 (the direction in which the tip of the welding torch 7 moves away from the rail 3). Thereby, the position of the tip of the welding torch 7 can be adjusted in the width direction within the groove of the welding portion.

Further, the holding members 19a and 19b support the welding torch 7 so that the position thereof can be adjusted in a direction perpendicular to the second rotation axis 21. That is, the support position of the tip (nozzle) of the welding torch 7 is set in the axial direction of the nozzle (arrow 27 or 2).
8 (direction indicated by 8). Thereby, the distance between the welding torch 7 and the work 9 can be adjusted as the welding operation proceeds. As described above, the rotation support portion 15 is provided with the first and second rotation axes 2 as described above.
The welding torch 7 is supported in a so-called free state, which is rotatable about two axes 0 and 21 .

FIG. 5 is a front view showing the structure of the moving means 6 of the auxiliary device 1. The rail 3 is detachably disposed on the surface of the work 9 substantially in parallel with the work line 33 by the ON / OFF magnets 31. Therefore, it is easy to adjust the position after the arrangement and to move to the next work section.

A mounting member 34 is fixed to one end of the rail 3 in the longitudinal direction, and a pulley 35 and a motor 37 for rotating the pulley 35 are mounted on the mounting member 34. The rotation speed of the motor 37 is configured to be adjustable by an operator using an operation unit (not shown). On the other hand, a mounting member 38 is fixed to the other end in the longitudinal direction, and a pulley 36 is mounted to the mounting member 38. Each rotation axis of the pulleys 35 and 36 is set so as to be orthogonal to the moving direction 2 of the table 4 and substantially parallel to the surface of the work 9.

The timing belt 5 is wound around the pair of pulleys 35 and 36. A plurality of recesses 39 of the same shape are formed at regular intervals on the inner peripheral surface of the timing belt 5, and a plurality of convex portions (to which the concave portions 39 are fitted) are formed on the outer peripheral surfaces of the pulleys 35 and 36. (Not shown). Therefore, when the concave portion 39 of the timing belt 5 and the convex portions of the pulleys 35 and 36 are fitted with each other, no slippage occurs between the timing belt 5 and the pulleys 35 and 36, and the timing belt 5 is reliably maintained at a constant speed. 5 can be moved.

Next, the moving mechanism of the table 4 will be described. FIG. 6 is a front view of the table 4, FIG. 7 is a top view of the table 4, and FIG.

An engaging portion 41 with which the timing belt 5 is engaged is formed on the surface of the table 4. Engaging portion 41
Is a concave portion 39 formed on the inner peripheral surface of the timing belt 5.
And has a plurality of convex portions 40 to be fitted into the boss. Engaging portion 41
Is formed at a position close to the short side portion 10b of the substrate 10, and as shown in FIGS. 7 and 8, the mounting portion 42b of the L-shaped pressing member 42 is attached to the short side portion 10b by a bolt 43.
Is fixed by using the pressing member 42, the pressing portion 42a of the pressing member 42 presses the timing belt 5 toward the engaging portion 41, whereby the timing belt 5
And sandwiched by. At this time, the convex portion 4 of the engaging portion 41
0 is fitted in the recess 39 of the timing belt 5,
The timing belt 5 and the table 4 are fixed. As a result, no slippage occurs between the table 4 and the timing belt 5, and the table 4 can be reliably moved in the moving direction 2 at a constant speed. The moving speed of the table 4 can be changed by adjusting the rotation speed of the motor 37.

When the pressing member 42 is removed, the holding state of the timing belt 5 is released, so that the table 4 can be moved along the rail 3 independently of the movement of the timing belt 5. The timing belt 5 may be held or released on the back side of the table 4.

On the other hand, four V
The character rollers 44 are arranged in two rows, two in each row. The rail 3 is, as shown in detail in FIG.
And guide portions 46, 46. The guide portion 46 is an elongated plate-like member having a V-shaped convex portion 46a at one end in the width direction. The guide portions 46 are arranged so that the convex portions 46a face in opposite directions. Fixed.
V-shaped groove 44a of V-shaped roller 44 and convex portion 46 of guide portion 46
a, the table 4 moves the rail 3
Are arranged so as to be movable along the longitudinal direction.

The rail 3 is mounted on a base 48, and the base 48 is turned ON / OFF at an appropriate position.
A type magnet 31 is mounted. The ON / OFF magnet 31 generates / erases a magnetic force by operating an ON / OFF switch 32, whereby the rail 3 is detachably disposed on the surface of the metal work 9.

As described above, according to the present embodiment, after the welding / cutting assisting device 1 is arranged at an appropriate position on the surface of the work 9, the operator can turn the rotation support portion 15 and the first and second positions. The aiming position of the welding torch 7 is adjusted by operating the adjusting mechanisms 12 and 13. After adjustment, the welding torch 7 is free
In this state, the operator can hold the welding torch 7 by himself (however, the torch weight is supported by the auxiliary device 1) and perform welding while moving the rod.

Usually, in the case of manual welding, a worker adjusts a welding speed, an aim position, and the like while checking the state of a molten pool with eyes, so that flexible welding can be performed based on visual information. In view of this, the auxiliary device 1 of the present invention is configured so as to realize flexible welding, which is a characteristic of manual welding. That is, as described above, since the operator can perform the rod operation (adjustment of the target position) by himself / herself, it is possible to constantly monitor the state of the molten pool and sometimes perform welding with a backward or forward angle. If the speed of the welding torch 7 is also adjusted, heat input can be sufficiently provided, and sound welding quality can be ensured .

Further, since the welding torch 7 moves at a constant speed along the rail 3, the operator need only concentrate on adjusting the positional relationship (posture) between the tip of the welding torch 7 and the work position of the work 9. Since the burden is reduced, fatigue can be reduced even when working for a long time, and the influence of hand shake due to fatigue can be suppressed. Further, even when the work at a high place is performed on the scaffold, the influence of the swing of the scaffold on the welding torch 7 can be suppressed.

One working section corresponds to the length of the rail 3. However, since the auxiliary device 1 performs constant-speed movement and weight support of the welding torch 7, even if the length of one working section is long, the quality is high. The welding can be performed with little decrease in the quality, and high quality welding with few seams can be performed. Further, since the welding torch 7 can be moved linearly, the shape of the welding bead is beautiful, and the appearance can be improved.

Further, if used by a beginner in performing welding work, the beginner only needs to concentrate on adjusting the posture of the welding torch 7, so that the quality of welding can be improved. It is also effective to use it for beginner training and education.

The table 4 can be reliably moved at a constant speed with a relatively simple structure using the timing belt 5, and can be realized at low cost. Since the table 4 can be moved independently of the timing belt 5, the operator can manually move the table to a desired position.
The convenience of handling is improved, and the working time can be reduced. In addition, since the motor 37 can be a motor that can rotate at a relatively low speed and can rotate in only one direction, the motor 37 can be realized at low cost and can be reduced in size and weight.

Further, since the rail 3 is arranged on the work 9 by using the ON / OFF magnet 31, the rail 3
Position adjustment, installation and removal work becomes easy,
The labor of the operator can be saved, and the working time can be reduced.

Although the present embodiment has been described for use in welding work, it can also be used for cutting (including gouging). In addition, the present invention can be used not only for the horizontal welding and the vertical welding but also for the upward welding and the downward welding. The moving direction of the welding torch 7 is not limited to the horizontal direction, but may be set to the vertical direction or the oblique direction. it can.

[0038]

As described above, according to the auxiliary device for welding and cutting according to the first aspect, after the auxiliary device is arranged at an appropriate position on the surface of the work, the operator himself holds the torch (however, the torch is not used). The weight is supported by an auxiliary device), and operations such as welding can be performed while moving the rod. Therefore, when welding is performed, a flexible welding operation, which is a characteristic of manual welding, can be realized, and sound welding quality can be ensured.

Further, the operator only needs to concentrate on the adjustment of the positional relationship between the tip of the torch and the working position on the work, and the burden is reduced. The effect of hand tremor caused by the vibration can also be suppressed. Furthermore, even when the work at a high place is performed on the scaffold, the influence of the swing of the scaffold on the torch can be suppressed.

One work section corresponds to the length of the rail. However, since the torch is moved at a constant speed and the weight is supported by an auxiliary device, even if the one work section is lengthened, there is little deterioration in quality. Welding and the like can be performed, and high-quality welding with few seams can be performed. Further, since the torch can be moved linearly, the shape of the bead when welding is performed is beautiful, and the appearance can be improved.

Further, if used by a beginner who has little experience in welding work or the like, the beginner only needs to concentrate on adjusting the posture of the torch, so that the quality of welding and the like can be improved. It is also effective to use it for beginner training and education.

Further, according to the above-mentioned auxiliary device for welding and cutting,
For example, the table can be securely fixed with a relatively simple structure
It can be moved at high speed. Also independent of transportation
The table can be moved
It can be moved to the desired position by hand,
Convenience is improved and work time can be reduced.
You.

Further , according to the auxiliary device for welding and cutting of the second aspect,
If the work surface and the torch are
High quality because the distance to the
Welding or the like can be performed.

[0044]

[Brief description of the drawings]

FIG. 1 is a perspective view of an auxiliary device according to an embodiment of the present invention.

FIG. 2 is a perspective view of an auxiliary device according to an embodiment of the present invention.

FIG. 3 is a perspective view of an auxiliary device according to an embodiment of the present invention.

FIG. 4 is a schematic view showing the movement of a torch in the auxiliary device.

FIG. 5 is a front view showing moving means of the auxiliary device.

FIG. 6 is a front view of a table constituting the auxiliary device.

FIG. 7 is a top view showing a moving mechanism of the table.

FIG. 8 is a sectional view showing a moving mechanism of the table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Welding / cutting auxiliary device 2 Moving direction 3 Rail 4 Table 5 Timing belt 6 Moving means 7 Welding torch 8 Support means 9 Work 15 Rotation support part 16 Mounting member 17 First support shaft 18 Second support shaft 19a Nipping member 19b Holding member 20 First rotation axis 21 Second rotation axis 31 ON / OFF magnet 32 ON / OFF switch 33 Working line 35 Pulley 36 Pulley 37 Motor 39 Concave part 40 Convex part 41 Engaging part 42 Pressing member 44 V-shaped roller

Continuation of the front page (56) References JP-A-5-318181 (JP, A) JP-A-7-178552 (JP, A) JP-A 8-57781 (JP, A) JP-A 8-155646 (JP) JP-A-51-14153 (JP, A) JP-A-60-108494 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B23K 37/02 B23K 9/12 B23K 9/127

Claims (2)

(57) [Claims] 1. A rail arranged in parallel with a work line to be welded or cut set on a work surface, a table movably arranged along the rail, and a table fixed along the rail. Moving means for moving at high speed; and supporting means mounted on the table for supporting the welding / cutting torch, wherein the supporting means is a first rotation parallel to the workpiece surface and perpendicular to the moving direction. It is rotatable around an axis and around a second axis of rotation perpendicular to the first axis of rotation, respectively , and the operator can position the torch at the position of the tip of the torch.
It supports the torch so that it can work while adjusting
Further, the moving means further comprises a plurality of recesses having the same shape.
Endless member whose parts are formed on the inner peripheral surface at regular intervals
And attached to both ends of the rail in the longitudinal direction
While the endless member is wound around the outer peripheral surface,
A plurality of protrusions are formed on the peripheral surface to be fitted into the recesses.
And one of the pair of pulleys
And a motor that rotates
It is possible to clamp the endless member and release the clamped state
And the inner peripheral surface of the endless member
Is formed with a plurality of convex portions to be fitted into the concave portions.
An auxiliary device for welding and cutting, comprising a pair of holding members . 2. The welding / cutting assist device according to claim 1, wherein the position of the support of the welding / cutting torch by the support means is adjustable.