JP3178989B2 - Weld treatment equipment for single side welding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the single-sided welding in the weld object, relates to a welding unit processor for or grinding the penetration bead or abut the back contact member in the weld.

[0002]

2. Description of the Related Art Generally, when one-side welding is performed on an object to be welded (for example, a bent outer plate of a ship), a welding portion processing operation for processing a welded portion is required.

[0003] The welding portion processing operation includes an operation of installing a backing member on the back side of the welding portion at the time of welding and an operation of grinding a back bead generated by welding. Of these, grinding work of Uranami bead is necessary, for example, when there is a problem in aesthetics and ease of assembly work,
An operator enters the lower part of the workpiece and grinds and removes it with a hand tool in an upward position.Or, after the welding operation is completed, the workpiece is turned upside down with a reversing device, and the back side of the workpiece is turned upside down. And remove it with a portal-type removal device having a removal polishing belt.

[0004] In addition, the work of installing the backing member is similar to the work of grinding a backside bead, in which a worker enters a work under a work table carried on a work table (also referred to as a surface plate) and enters the work. The person becomes an upward posture and is fixed to the welded portion by using a fixing jig.

[0005]

[0006] In the above-described welding processing, especially in the case of removing the Uranami bead using the removing device, an inverting device for reversing the object to be welded becomes large and small. There is a problem that the cost becomes large and the equipment cost is high.

[0006] The lower side of the work to be welded is narrow and the environment is poor.
Installing the backing member in an unreasonable upward position with a worker entering such a place is a difficult task, especially when the work to be welded is curved. The efficiency is reduced, and the number of welding operations is increased.

[0007] The present invention aims to provide a weld processing apparatus that put on one side welding capable of solving the above problems.

[0008]

Means for solving the problems according to the present invention is to provide a method in which the object to be welded is placed under the workpiece along the welding direction.
Guide carts are provided movably on guide rails
The guide bogie has a position for detecting the position of the weld.
Position detector and freely movable in the horizontal direction perpendicular to the welding direction
The position adjustment table and the position adjustment table
And a position adjusting device for moving in accordance with the detection signal of
The backing member is pressed against the welding side of the position adjustment table.
It can be moved up and down freely through the positioner,
On the opposite side, a grinding tool is mounted so that it can be raised and lowered freely via a lifting device
Have been killed.

[0009]

[0010]

In the above means for solving the above problems, the position detector detects
In addition to detecting the position of welded parts and Uranami beads of
Drive the position adjustment device at right angles to the position
Move the guide bogie in the welding direction
Moving along the guide rails along with the pressing device and the lifting device
The backing member is brought into contact with the welded part by driving the
And apply a grinding tool to the Uranami bead to grind the Uranami bead.
Shave.

[0011]

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. As shown in FIG. 1, for example, one-side welding is performed on a workpiece 1 such as a bent outer plate in a ship. At this time, a holding device A for bringing the endless backing member 2 into contact with the back side of the welded portions 1a opposed to each other, and a Uranami bead grinding device B for grinding the Uranami bead generated in the welded portion 1a. Is a welding part processing apparatus C comprising:

A base 4 is provided below the workpiece 1 and has a vertically extendable support column 3 for supporting the workpiece 1 on its back surface. A pair of guide rails 6 along the welding direction 5 of the workpiece 1
Is provided.

As shown in FIG. 2, the holding device A includes a guide cart 8 movably provided on the guide rail 6 and a moving device 9 for moving the guide cart 8 along the guide rail 6. A position detector (for example, a non-contact type position detector such as a laser fiber sensor is used) 14 which is mounted on the guide carriage 8 via the support member 13 and detects the position of the welded portion 1a; A position adjusting table 20 which is arranged on the guide carriage 8 and is movable in a lateral direction 5B perpendicular to the welding direction 5;
Position adjusting device 21 for adjusting the position of backing member 2 by moving in accordance with the detection signal from
A first cylinder device (an example of a pressing device) 32 that is arranged on the upper side in the welding direction and moves the backing member 2 up and down.

As shown in FIGS. 3 and 4, the moving device 9 is provided between the guide rails 6, a rack 7 disposed along the guide rails 6, and provided on the lower surface of the guide carriage 8.
A guide member 10 slidably fitted on the vehicle, a moving motor 11 mounted on the guide cart 8, and the moving motor 11
And a pinion 12 which is attached to the output shaft and meshes with the rack 7.

As shown in FIG. 5, the position detector 14
A ball screw 1 that rotates with the driving of the lifting / lowering motor 15 is attached to the lifting / lowering motor 15 attached to the support member 13.
6 is provided so as to be able to move up and down by a raising and lowering member 17 which is screwed to 6, and is attached to a side of the raising and lowering member 17 so as to be reciprocally movable in a lateral direction 5B perpendicular to the welding direction 5 by a guide shaft 18.

The position adjusting device 21 includes a pair of guide rods 22 mounted on the guide carriage 8 in a lateral direction 5B perpendicular to the welding direction 5, and a guide body 23 slidably fitted to the guide rods 22. An adjustment motor 25 mounted on the upper part of the guide cart 8, a ball screw 27 mounted on the output shaft of the adjustment motor 25 and housed in the guide cart 8 and having an end supported by a bearing; And a nut member 28 which is attached to the lower part of the adjustment table 20 and is screwed to the ball screw 27.

The backing member 2 has a plurality of backing pieces (for example, ceramics) 2b connected by a connecting chain (not shown) and is wound around a pair of rollers 30 to be endless (caterpillar-like). ),
The backing member 2 is rotatably supported by a frame 31 via each roller 30, and the frame 31 is provided with a first cylinder device 32
Is swingably attached to the upper end portion via a swing shaft 33.

The first cylinder device 32 is mounted between the position adjusting table 20 and the frame 31, and presses the contact surface 2a of the backing member 2 against the welded portion 1a with a constant pressure. An elevator 35 is provided at an intermediate portion of the first cylinder device 32.
Is mounted between the upper surface of the elevator 35 and both lower surfaces of the frame 31 in accordance with the curvature of the workpiece 1.
A pair of oscillating cylinder devices 36 for oscillating are mounted.

Then, a shaft 37 for ascending / descending guide is hung down from the elevating table 35, and this shaft 37 is inserted and guided by a guide plate 39 arranged at the upper end of a support box 38 for supporting the first cylinder device 32.

The back bead bead grinding device B for grinding the back bead generated in the welded portion 1a by the welding operation includes the guide carriage 8, the moving device 9, the position detector 1
4. Position adjustment table 20, position adjustment device 21, position adjustment table 2
0, a second cylinder device (an example of a lifting device) 40 mounted on the side opposite to the welding direction, a lifting table 43 mounted on the upper portion of the second cylinder device 40, and a grinding motor mounted on the lifting table 43 50 and this grinding motor 50
And a disc-shaped grinding tool 41 attached to the output shaft of the above.

The second cylinder device 40 includes the position adjusting table 20.
The lifting table 43 is mounted on the upper part of the second cylinder device 40 via the support table 42 disposed on the upper side,
The lift 43 is configured to be able to move up and down by a guide shaft 44 erected on a support 42, and the grinding tool 41 is arranged on a horizontal axis 5B perpendicular to the welding direction 5 on the lift 43. It is supported rotatably around 45.

On the lift 43, three pairs of pressing rollers 47 are mounted via supporting legs 46, and the amount of grinding of the Uranami bead is determined by the relative height between the grinding tool 41 and the pressing roller 47. It is configured to be.

A tank 48 for supplying cooling water 49 to the grinding portion when grinding the Uranami bead is provided on the support table 42.
Is installed. In the above configuration, the elevation motor 15 is driven to raise the position detector 14 to a predetermined height, and the position detector 14 is moved in the lateral direction 5 perpendicular to the welding direction 5.
B, the position of the welded portion 1a is detected, and the adjusting motor 25 is driven in accordance with the detection signal from the position detector 14, and the position adjusting table 20 is moved in the horizontal direction 5B perpendicular to the welding direction 5.
To adjust the center of the backing member 2 so as to substantially coincide with the center of the welded portion 1a.

When the position adjustment is completed, the first cylinder device 32 is driven to raise the contact surface 2a of the backing member 2 until the contact surface 2a contacts the welded portion 1a, and the backing member 2 is pressed at a constant pressure. The state where the contact surface 2a is in contact with the welded portion 1a is maintained.

Thereafter, the welding portion 1a is welded by a welding torch (not shown), and when welding in a predetermined section is completed, the moving motor 11 is driven to move the guide carriage 8 by a predetermined distance to the guide rail. Move along 6.

At this time, the position detector 14 is again scanned in the horizontal direction 5B perpendicular to the welding direction 5 to detect the position of the welding portion 1a, and the adjusting motor 25 is operated in accordance with the detection signal from the position detector 14. By driving, the position adjusting table 20 is moved in the horizontal direction 5B perpendicular to the welding direction 5, and adjusted so that the center of the backing member 2 always coincides with the center of the welded portion 1a.

When the guide cart 8 is moved along the guide rail 6, the backing member 2 is wound around a pair of rollers 30 and is rotatable. It rotates and moves while being in contact with the welded portion 1a.

[0029] When the welding portion 1a is curved, by stretching each swing cylinder device 36,
An adjustment is made so that the contact surface 2a of the backing member 2 is located in the tangential direction with respect to the welded portion of the welded portion 1a.

As described above, the position adjusting table 20 is moved in the lateral direction perpendicular to the welding direction 5 so that the center of the backing member 2 is always adjusted to coincide with the center of the welded portion 1a, and intermittently guided. The carriage 8 is moved, and the backing member 2 is kept at a constant pressure.
The welding is performed such that the contact surface 2a of the contact member abuts on the welded portion 1a.

By the way, every time the welding operation in a predetermined section is completed, a back bead is formed in the welded portion 1a, but the backing member 2 is followed by the grinding tool 41 as the guide cart 8 travels. The grinding tool 41 is rotated by driving the grinding motor 50 to grind the Uranami bead. Since the grinding tool 41 is moving after the backing member 2, the grinding tool 41 is formed as soon as the back bead is formed before cooling is completed (while grinding resistance is small).
Grinding.

Since the position of the Uranami bead coincides with the position of the welded portion 1a, when the backing member 2 is aligned with the welded portion 1a, the position of the backing bead is adjusted in accordance with the detection signal from the position detector 14. By moving the table 20 in a lateral direction perpendicular to the welding direction 5, the positioning of the grinding tool 41 is performed at the same time. Therefore, the height of the grinding tool 41 is adjusted by driving the second cylinder device 40. The grinding tool 41 can be brought into contact with the Uranami bead by simply performing the operation, and the grinding motor 50 can be driven to perform the grinding at any time before the Uranami bead is completely cooled.

As described above, according to the embodiment of the present invention, the guide cart 8 movably provided on the guide rail 6 is provided with the position adjusting table 20 movably in the lateral direction perpendicular to the welding direction 5.
The position adjusting device 21 is provided by a detection signal from the position detector 14.
, The position adjusting table 20 is moved, the first cylinder device 32 is driven to hold the backing member 2 against the welded portion 1a, and the second cylinder device 40 is driven to grind the backing bead. The tool 41 is rotated by rotating it, and before the Uranami bead is completely cooled, that is, while the grinding resistance is small, the operator automatically grinds the workpiece 1 at any time. There is no need to hold the backing member 2 on the welded portion 1a or grind the backside bead in a state where it has entered the lower narrow place, so that the work for the treatment of the welded portion 1a is facilitated. Welding time can be reduced.

The backing member 2 is formed in an endless shape made of ceramics, so that the conventional plate-shaped member was discarded after one use, but according to the embodiment of the present invention, Since it can be used repeatedly for a long time, the backing member 2
Cost can be reduced.

[0035]

As is apparent from the above description, the present invention provides a guide cart that moves along the work to be welded, attaches a position adjuster to the guide cart, and attaches the position adjuster to the position adjuster via a lifting device. It supports the position detector for detecting the position of the grinding tool and the Uranami bead, and drives the position adjustment device according to the detection signal from the position detector to move the position adjustment table. In addition, there is no need for the operator to grind the Uranami bead while entering the narrow space below the workpiece, and the grinding of the Uranami bead can be performed automatically and easily with a simple device. Therefore, it is possible to reduce the number of grinding operations of the Uranami bead during welding and reduce the number of welding operations.

[Brief description of the drawings]

FIG. 1 is an overall view showing a use state of a holding device according to an embodiment of the present invention.

FIG. 2 is a partially enlarged front view of the same.

FIG. 3 is an enlarged side view of the holding device.

FIG. 4 is an enlarged side view of the Uranami bead grinding device side.

FIG. 5 is a side view of the position detector.

[Explanation of symbols]

 Reference Signs List 1a Welded part 2a Contact surface 5 Welding direction 6 Guide rail 8 Guide cart 15 Elevating motor 14 Position detector 20 Position adjustment table

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-139653 (JP, A) JP-A-63-97448 (JP, U) JP-B-58-52480 (JP, B2) (58) Field (Int.Cl. ⁷ , DB name) B24B 9 / 04,27 / 00 B23K 37 / 06,37 / 08

Claims (1)

(57) [Claims] An endless backing member is brought into contact with the back side of opposing welded portions during one-side welding of an object to be welded, and welding for grinding a Uranami bead generated in the welded portion. A part processing device, wherein a guide cart is movably provided on a guide rail arranged along a welding direction below a workpiece to be welded, and a position detector for detecting a position of a welded part on the guide cart. A position adjusting table movably provided in a lateral direction perpendicular to the welding direction, and a position adjusting device for moving the position adjusting table in accordance with a detection signal from a position detector. The backing member is attached to the welding direction side via a pressing device so as to be able to move up and down, and the grinding tool is attached to the opposite side of the position adjustment table in the welding direction so as to be able to move up and down through the elevating device. Weld processing equipment for single side welding.