JP3526178B2 - Single side welding equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to one-sided welding of butt-welded steel sheets to be welded, and more particularly, to a type conveyed from a direction in which a welding line of the butt-welded steel sheets extends. The present invention relates to a single-sided welding device capable of automatically collecting and dispersing flux on a backing member from one-sided welding of a steel plate to be welded.

[0002]

2. Description of the Related Art As a conventional single-sided welding device, Japanese Patent Publication No.
Those described in Japanese Patent Application Laid-Open No. 1-7136 have been proposed. The one-sided welding by this one-sided welding device positions the steel plate to be welded temporarily on the steel plate to be welded steel plate, mounts a pair of clamp members (clamp beams) on the steel plate to be welded, and The backing copper plate on which the flux is placed is pressed from the backside by the backing device to clamp the steel plate to be welded. Then, the welding unit mounted on one of the pressing members is made to scan along the welding line of the steel plate to be welded, and the steel plates to be welded are welded on one side by this welding head. Then, when the one-sided welding of the steel plates to be welded is completed, in order to weld the next steel plates to be welded together, the flux is collected and sprayed on the backing copper plate of the backing device, for example, the backing copper plate can be run freely. It is performed by the trolley that is said to be used for the backside flux dispersion.

By the way, there is a type shown in FIG. 6 and FIG. 7 as a conventional one-sided welding apparatus for continuously welding one side of a plurality of steel plates to be welded to each other.

First, in order to perform one-sided welding by the one-sided welding device of the type shown in FIG. 6, a plurality of welded steel plates 63, 63 are welded to each other as shown in FIG.
After being conveyed in a direction orthogonal to the extending direction and positioned below the welding unit 61 of the one-sided welding device 60, the welding unit 61 is moved along the welding line 62 as shown in FIG. 6B. By scanning, the pair of steel plates 6 to be welded
One side of 3, 63 is welded. Then, a plurality of continuous steel plates 63, 63 to be welded are sequentially transported in a direction orthogonal to the extending direction of the welding line 62 and positioned below the welding unit 61, so that a plurality of welded steel plates are sequentially welded by the welding unit 61. The steel plates 63, 63 are welded on one side. In addition, the backing flux collected and sprayed on the backing member 65 of the backing device 64 for sequentially welding the plurality of welded steel plates 63, 63 to each other on one side includes a pair of welded steel plates 63, 63 on one side. After welding, the backing flux dispersion collection truck is run on the backing member 65 to collect and disperse the flux. At this time, the backing device 65 itself should be separated from the steel plates 63, 63 to be welded. It is lowered so that the backing flux spraying recovery carriage does not interfere with the steel plates 63, 63 to be welded.

Next, in order to perform one-sided welding by the one-sided welding device of the type shown in FIG. 7, the plurality of welded steel plates 73, 73 are welded to each other as shown in FIG.
After being conveyed in the extending direction and positioned below each welding unit 71 of the plurality of single-sided welding devices 70, as shown in FIG. 7B, each welding unit 71 is welded to each steel plate 73, By scanning along the welding line 72 of 73, the plurality of steel plates 73, 73 to be welded are welded on one side at a time. Then, the steel plates 73 to be welded which are integrated by welding,
After the 73 is transported to the outside of each one-sided welding device 70, a plurality of new steel plates 73, 73 to be welded are positioned below each welding unit to sequentially weld the one-sided steel plates 73, 73.

[0006]

In the conventional single-sided welding apparatus of the type shown in FIG. 7, the backing flux to be recovered and sprinkled in order to sequentially weld the plurality of steel plates to be welded on one side is shown in FIG. Similar to the single-sided welding apparatus, it is conceivable that the plurality of steel plates to be welded are single-sidedly welded, and then the backing flux-dispersing recovery cart is run on the backing member to perform the recovery and dispersion. In the model of FIG. 7, since the steel plate to be welded is always conveyed to the outside from the one-sided welding device after the one-sided welding is completed, it is not necessary to lower the backing member to disperse and collect it, and to disperse and collect it without lowering it. be able to. However, when the next steel plate to be welded is carried in, the lining back flux spraying recovery trolley collides with it, so the spray recovery trolley must be evacuated during the loading trip. Therefore, if only the backing flux spraying recovery carriage is lowered and retracted without moving up and down the entire backing member, there will be no hindrance to the transportation.

However, in the one-sided welding apparatus of the type shown in FIG. 7, when the backing device itself is lowered to collect and disperse the flux to the backing member, the one-sided welding device is lowered by the amount corresponding to the lowering of the backing device. Pit (arrangement space) that becomes taller and is dug on the floor to place the equipment
However, there is a problem in that the construction cost of the single-sided welding device is increased.

The present invention has been made to solve this problem, and it is possible to reduce the cost of construction while automating a series of operations for collecting and dispersing flux from one-side welding of a steel plate to be welded. It is to provide a single-sided welding device.

[0009]

In order to solve the above problems, in the single-sided welding apparatus of the present invention, the steel plates to be welded whose side ends are butted are conveyed from the direction in which the butted weld line extends, and In a single-sided welding device for single-sided welding of steel sheets to be welded along with each other, the welding means is located above the transported steel sheet to be welded, the welding means is scanned along the welding line, and the transported steel sheet to be welded. Backing means that is located below and that has a backing member that extends along this welding line, and that moves this backing member forward and backward with respect to the steel plate to be welded,
A backing flux spraying and collecting means that is movable on the backing member and collects and spreads flux on the backing member; and a backing flux spraying and collecting means that is arranged continuously to the backing member. And an elevating means for elevating and retracting the evacuation part, which receives and transfers the backing member from the backing member, and evacuates the evacuation part, which receives and transfers the backing flux dispersion collecting means, so as not to interfere with the conveyed steel sheet to be welded. Is. With this, when the butt-welded steel sheets to be welded are conveyed, the backing flux dispersion recovery means can be retracted by the elevating means so as not to interfere with the steel sheets to be welded, and after the steel sheets to be welded are conveyed, the backing member is backed up. Since the flux dispersion recovery means can be advanced, a series of operations from one-side welding of the steel plate to be welded to the recovery and dispersion of the flux to the backing member can be automatically performed. Further, since the backing flux dispersion collecting means is moved up and down and retracted to a position where it does not interfere with the steel plate to be welded, the height dimension of the single-sided welding device can be suppressed by the amount not moving up and down the backing device.

In the single-sided welding device according to the second aspect of the present invention, the backing flap is
The cloth dispersion collecting means is reciprocally rotated along the backing member.
By being connected to an endless chain via connecting means
It is free to travel, and the connecting means has the tip facing upward.
Connection pin attached to the backside flux dispersion recovery means.
And a connection hole that is detachably engaged with the connection pin.
The connecting lever attached to the endless chain
The connecting pin and the connecting hole are attached and detached with the backing cover.
Things to do by raising and lowering the Lux spray collection means
This is a single-sided welding device. This allows the backing rack
The spatter collection means is reciprocated following the endless chain.
It In addition, the connection pin from below from the connection hole of the connection lever
By inserting the
The end chains are connected to each other. Furthermore, connect the connecting pin
The connection can be released by removing it downward from the hole.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A single-sided welding apparatus according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

Referring to FIGS. 1 and 2, a single-sided welding apparatus 1 of the present invention includes a steel plate 2 to be welded whose side ends are butted against each other.
2 is arranged below the welding unit 4 (welding means) by conveying it from the direction in which the butt welding line 3 extends, and then the welding unit 4 is scanned along the welding line 3 to form the steel plates 2, 2 to be welded. For the type of welding from one side, recovery of the backing flux used on the back side of the steel sheets 2 and 2 to be sprayed from the one side welding of the steel sheets 2 and 2 to be welded and spraying can be continuously and automatically performed. It is a thing.

The single-sided welding apparatus 1 has a holding table 6 arranged in a shallow pit 5 (arrangement space) dug on the floor surface (ground), and the steel plate 2 to be welded 2 conveyed on the holding table 6. , 2 is provided with a backing device 7 (backing means) for pressing from below. The backing device 7 is provided with a thick backing copper plate 7a (backing member) that is pressed by the expansion of the air hose 7b on the back surface of the conveyed welded steel plates 2 and 2. The steel plates 2 and 2 to be welded can be pressed in the extending direction. The backing copper plate 7 is provided on one end side of the backing device 7.
An elevating device 9 for elevating and lowering the backing flux dispersion recovery carriage 8 (the backing flux dispersion recovery means) for recovering the backing flux after welding and spraying a new backing flux after the welding is provided on the a. 9 is housed in a pit 10 (arrangement space) which is dug to the pit 5 to some extent.

The single-sided welding device 1 also has a plurality of transfer rollers 11 for conveying the steel plates 2 and 2 to be welded in the direction in which the backing steel plate 7a of the backing device 7 extends. The transfer rollers 11 are provided on both sides of the pits 5 and 10 and the backing device 7
And the welding target steel plates 2 and 2 are conveyed only in the extending direction of the welding line 3, and the welding line 3 is attached to the backing copper plate 7a.
Are arranged on the backing device 7 so that

As shown in FIG. 3, which is not shown in FIG. 3, the backing-flood-scattering recovery carriage 8 which circulates the backing-flux can freely run on the backing-copper plate 7a by the drive unit 15 provided in the backing device 7. The hopper 16 for spraying the backing flux on the backing copper plate 7a, the crusher 17 for crushing and scraping off the backing flux remaining on the backing copper plate 7a after welding, the scraper 18, and the scraped backing flux. And a collection box 19 for collecting the. Drive unit 15
Has an endless chain 26 spanned by a pair of sprockets 25A, 25B axially supported at intervals in the direction in which the backing copper plate 7a extends, and the sprocket 25A on the pit 10 side connects the chain to the sprocket 27A of the drive motor 27. Are connected through (also shown in FIG. 1). And, as shown in FIG. 3 to FIG.
Connecting lever 2 fixed to endless chain 26 of drive unit 15
By being connected to 8, the endless chain 26 that is reciprocally rotated by the drive of the drive motor 27 is followed to reciprocate on the backing copper plate 7a of the backing device 7. Further, the backing flux spraying recovery carriage 8 and the connecting lever 28 are connected to each other by the connecting lever 2
8 are connected to each other by fitting the connecting pin 29 into the connecting hole 28a from the bottom side of the pit 10 (shown in FIG. 3), or the connecting pin 29 is removed from the connecting hole 28a toward the bottom side of the pit 10. This allows the connection to be released (shown in Fig. 4).

As a result, the backing cloth spraying recovery cart 8
When driving the backing copper plate 7a of the backing device 7 by driving the drive motor 27, the crusher 17 and the scraper 18
By crushing the backing flour after welding by scraping it off and collecting it in the collection box 19, the backing flux from the hopper 16 is replaced with new backing flour on the backing copper plate 7a from which the backing flux has been collected.
Can be sprayed automatically. Further, by driving the drive motor 27 in the opposite direction to the above, the backing flux spraying recovery carriage 8 that has run to the side opposite to the pit 10 side end of the backing copper plate 7a can run to the pit 10 side end.

The lifting device 9 housed in the pit 10 is
As shown in FIGS. 3 to 5, the backing copper plate 7 of the backing device 7 is shown.
evacuation platform 30 continuously provided at the end of pit 10 side of a
The evacuation base 30 is moved up and down in the pit 10 by the ball screw mechanism 32 that has a (retraction part) and is operated by the drive of the elevating motor 31. The lifting motor 31 and the ball screw 32 are a support frame 34 protruding from one end of the backing device 7 into the pit 10.
The retractable table 30 is supported by the guide member 3 when moving up and down.
It is raised and lowered while being guided by 3.

Thus, the backing copper plate 7a of the backing device 7 is run and the backing flux spraying recovery carriage 8 is mounted on the evacuation base 30.
After evacuating, the raising / lowering motor 31 is driven to move the backing-flood-scattering recovery carriage 8 together with the retracting stand 30 to the backing device 7.
Of the backing device 7, which can be retracted into the pit 10 so as not to interfere with the steel plate to be welded being conveyed, and the backing flux dispersion recovery carriage 8 retracted into the pit 10 is backed to the backing device 7. By rising toward the copper plate 7a, the backing copper plate 7
You can advance to a.

A welding unit 4 for welding the steel plates 2, 2 to be welded on one side is arranged above the backing device 7 of the one-sided welding apparatus 1, as shown in FIG. Welding unit 4
Is equipped with a plurality of welding heads, and two clamp beams 35a, 3 mounted on the steel plates 2, 2 to be welded.
It is arranged on one of the clamp beams 35a of 5b. The clamp beams 35a and 35b extend in parallel with the welding line 3 of the steel plates 2 and 2 to be welded.
The steel plates 2 and 2 to be welded across the extending direction of the backing device 7
Clamp with (backing copper plate 7a).

A rail carriage 36 is arranged on the lower step portion 35a1 of the clamp beam 35a so as to be horizontally movable in a direction orthogonal to the welding line 3 of the steel plates 2 and 2 to be welded. Is mounted with a rail along the welding line 3, and when the clamp beam 35a is displaced from the welding line 3, the rail is aligned in parallel with the welding line 3. The welding unit 4 is mounted on a traveling carriage that travels independently on the rails arranged on the rail carriage 36. The welding unit 4 is mounted on the rail carriage 36 together with the feeder for the welding wire 37. Reference numeral 40 denotes a flux carriage equipped with a flux circulator 41 for the surfaces of the steel plates 2 and 2 to be welded, which is designed to run at the same speed as the welding unit 4. Reference numeral 42 denotes a reel carriage having a wire reel 43 mounted thereon, which travels on a traveling rail 44 of the upper step portion 35a2 of the clamp beam 35a at the same speed as the welding unit 4.

One-sided welding apparatus 1 in the embodiment of the present invention
Is configured as described above. Next, a procedure for welding the steel plates 2, 2 to be welded on one side by using the one-sided welding device 1 will be described.

First, in order to weld the steel plates 2 and 2 to be welded on one side, the side edges of the steel plates 2 and 2 to be welded are abutted and temporarily attached to each other and positioned on the transfer rollers 11. At this time, the welded steel plates 2 and 2 are positioned such that the welded steel plates 2 and 2 are butted to each other so that the welding line 3 extends in the scanning direction of the welding unit 4.

After positioning the steel plates 2 and 2 to be welded on the respective transfer rollers 11, the backing-flood-dispersion recovery carriage 8 is driven by a drive motor 27 to drive the sprocket 27A and the sprocket 27 as shown in FIGS. Pair 25A, 25
B, the backing flux is sprinkled on the backing copper plate 7a from the hopper 16 by reciprocating on the backing copper plate 7a from the retreat base 30 via the connecting pin 29 fitted in the endless chain 26 and the connecting lever 28. . Next, the evacuation table 30
As shown in FIG. 4, the backing flux dispersion / collection carriage 8 that has been evacuated to the lower side is driven downward by driving the elevating motor 31. As a result, in the backing flux spray recovery carriage 8, the connection pin 29 is removed from the connection hole 28a of the connection lever 28 to release the connection to the drive device 15, and at the same time, it interferes with the welded steel plates 2 and 2. Not saved in the pit 10.

[Back] Back Flux Dispersion Recovery Cart 8 in Pit 1
After evacuating to 0, the steel plates 2 and 2 to be welded are pit 10
From the side in the extending direction of the welding line 3 and welded steel plate 2,
The welding line 3 of 2 is made to face the backing copper plate 7a of the backing device 7,
It is located below the welding unit 4. In this state, the clamp beams 35a, 35b are brought into contact with the steel plates 2, 2 to be welded from above, and then the backing copper plate 7a is brought into contact with the back faces of the steel plates 2, 2 to be welded by the expansion of the air hose 7b. Thus, the steel plates 2, 2 to be welded are pushed up to the welding unit 4 side. At this time, the steel plates 2 and 2 to be welded are clamped by the backing copper plate 7a and the clamp beams 35a and 35b facing the backing copper plate 7a.

After the steel plates 2 and 2 to be welded have been sufficiently clamped as described above, the welding unit 4 is moved from the wire reel 43.
The welding wire 37 is fed to the welding head of 1 to prepare for welding, and at the same time, the flux circulator 41 feeds the welding line 3
Disperse the flux toward. Next, the welding unit 4 is caused to travel along the rail mounted on the rail carriage to start single-sided welding. Simultaneously with the start of this welding, the welding wire 37 is continuously fed from the wire reel 43 to the welding head, but the reel carriage 42 and the flux carriage 40 run at the same speed as the welding unit 4. If the welding unit 4 and the like reach the end of the welding line 3 while the single-sided welding is started and continued as described above, after stopping all of them, the clamp beams 35a and 35b are raised. Are separated from the welded steel plates 2 and 2, and the backing copper plate 7a is retracted downward from the welded steel plates 2 and 2 by the contraction of the air hose 7b. The work is conveyed from the present direction to the outside of the one-sided welding device 1 to complete the one-sided welding work.

When the work of single-sided welding of the steel plates 2 and 2 to be welded is completed, in order to weld new steel plates 2 and 2 to be welded, the backing flux of the backing flux after the welding to the backing copper plate 7a of the backing device 7 is performed. Collect and sprinkle new backing flux. That is, as shown in FIG. 3, the backing flux dispersion / collection carriage 8 retracted into the pit 10 is lifted together with the retractable base 30 by driving the lifting motor 27, as shown in FIG.
Are positioned so as to be continuous with the backing copper plate 7a. Due to this rise, the connection pin 29 is fitted into the connection hole 28 a of the connection lever 28, and the backing flux spraying recovery carriage 8 is connected to the drive device 15. When the drive motor 27 of the drive device 15 is driven in this state, the backing flux spraying recovery carriage 8 is moved from the retracting base 30 to the backing copper plate 7a via the spoutet 27A, the sprocket pair 25A and 25B, the endless chain 26 and the connecting lever 28. While traveling up, the crusher 17 and scraper 18 crush and scrape off the backing flux after welding that remains (adhesion, etc.) on the backing copper plate 7a by the crusher 17 and scraper 18, and at the same time the new backing loaded in the hopper 16 is loaded. Spread the flour on the backing copper plate 7a.
The backing flux scraped off from the backing copper plate 7a is collected in the collection box 19 of the backing flux spraying collection carriage 8. Then, the back-side flux spraying recovery trolley 8
After traveling from the end on the side of the pit 10 on the backing copper plate 7a to the end on the opposite side, the drive motor 31 is driven in the opposite direction to travel to the evacuation base 30 and evacuate.

The backing copper plate 7a of the backing device 7 as described above.
When new backing flux is sprayed on the upper part, the backing flux spraying recovery carriage 8 is lowered again together with the retracting base 30 to be retracted into the pit 10 that does not interfere with the steel plates 2 and 2 to be welded. Then, with the backing flux dispersion recovery carriage 8 retracted into the pit 10, a new steel plate to be welded 2,
In order to weld 2 on one side, the steel plates 2 and 2 to be welded are butted against each other and positioned on the respective transfer rollers 11, and are conveyed in the direction in which the welding line 3 extends.
On the backing copper plate 7a of the backing device 7 and positioned below the welding unit 4. After that, one-sided welding is sequentially performed on the steel plates 2 and 2 to be welded by the procedure as described above.

As described above, according to the single-sided welding apparatus of the present invention, after the steel plates 2 and 2 to be welded are butted against each other, the single-sided welding by the welding unit 4 (welding means) is performed and the backing flux dispersion recovery carriage 8 (backside) is carried out. It is possible to automatically perform a series of operations of collecting and spraying the backing flux by the flux spraying and collecting means), and it is possible to shorten the one-side welding time of the continuous steel plates 2, 2 to be welded. Further, the backing flux spraying recovery carriage 8 is moved up and down, and the steel plate to be welded 2,
Since the backing device 7 is retracted to a position where it does not interfere with the backing device 7, the height of the single-sided welding device 1 can be suppressed by the amount that the backing device 7 is not moved up and down. It is also possible to reduce the construction cost of the device 1.

In the single-sided welding apparatus of this embodiment, the one-sided welding of a pair of steel plates 2 and 2 to be welded has been described. However, three or more steel sheets 2 and 2 to be welded are once welded. It may be applied to one-side welding (shown in FIG. 7). In this case, a plurality of one-sided welding devices are arranged such that the scanning directions of these welding units 4 are parallel to each other according to the number of the steel sheets 2 and 2 to be welded for one-sided welding. Butt two,
By conveying these welded steel plates 2 and 2 in the direction in which the welding line 3 extends, each welded steel plate 2 and 2 is welded to each welding unit 4
Located below. Then, according to the one-sided welding procedure described above, the flux is automatically collected and sprayed from the one-sided welding of the steel plates 2 and 2 to be welded to the backing member 7a of each backing device 7.

[0030]

According to the single-sided welding device of the first aspect of the present invention, when the steel sheet to be welded whose side ends are butted against each other is conveyed, the backing flux dispersion collecting means is moved to the steel sheet to be welded by the elevating means. Since it can be retracted so that it does not interfere, and the backing flux dispersion collection means can be advanced to the backing member after the steel plate to be welded is conveyed, a series of operations from the one-side welding of the steel plate to be welded to the collection and dispersion of flux to the backing member Can be automatically performed, and it becomes possible to shorten the one-sided welding time of continuous steel plates to be welded. Further, since the backing flux dispersion collecting means is moved up and down and retracted to a position where it does not interfere with the steel plate to be welded, the height dimension of the single-sided welding device can be suppressed by the amount that the backing device is not moved up and down. Since the pit where this equipment is located can be made shallow, it is possible to reduce the construction cost of the single-sided welding equipment.

According to the one-sided welding device of claim 2, the one-sided welding device of claim 1
In addition to the effect, the connection pin and the connection hole with the tip facing upward are
Backing is possible by detachably engaging the connecting lever
Flux dispersion collection means and endless chain are interconnected
Since this is done, we will exchange the backside flux dispersion collection method
Connecting and disconnecting can be done simply by moving up and down the retracted part.
come.

[Brief description of drawings]

FIG. 1 is a side view showing a single-sided welding device according to an embodiment of the present invention.

FIG. 2 is a view showing a single-sided welding device according to the embodiment of the present invention, and is a view taken along the line AA of FIG.

FIG. 3 is an enlarged view of a main part of FIG. 1, showing a state in which a backing flux spraying recovery carriage is advanced.

FIG. 4 is an enlarged view of an essential part of FIG. 1, showing a state in which a backing flux spraying recovery carriage is retracted.

5 is a view taken along the line BB of FIG.

FIG. 6 is a schematic diagram for explaining a conventional single-sided welding device.

FIG. 7 is a schematic diagram for explaining a conventional single-sided welding device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 One-sided welding device 2 Steel plate to be welded 3 Welding line 4 Welding unit (welding means) 7 Backing device (backing means) 7a Backing copper plate (backing member) 8 Backing flux dispersion recovery trolley (backing flux dispersion recovery means) ) 9 Elevating device (elevating means) 30 Retracting members 35a, 35b Clamp beam

Continuation of front page (51) Int.Cl. ⁷ Identification code FI // B23K 101: 18 B23K 101: 18

Claims (2)

(57) [Claims] 1. A steel sheet to be welded whose side ends are butted against each other is conveyed from a direction in which this butted welding line extends,
In a single-sided welding device for single-sided welding steel sheets to be welded along this welding line, a welding means positioned above the transported steel sheet to be welded and scanned along the welding line, and the transported workpiece. A backing member that is located below the welded steel plate and extends along the welding line, and a backing member that moves the backing member forward and backward with respect to the steel plate to be welded; , A backing flux spraying and collecting means for collecting and spraying the flux to the backing member, and a retreat which is arranged continuously to the backing member and which transfers and receives the backing flux spreading and collecting means from the backing member. A single-sided welding apparatus, comprising: a lifting unit that lifts and lowers a retracting unit that receives and transfers the backing flux dispersion collecting unit so as not to interfere with the transported steel sheet to be welded. 2. The backside flux dispersion according to claim 1.
The collecting means is an endless chain that is reciprocally rotated along the backing member.
Freely run by being connected to the chain via connecting means
And the connecting means is such that
Connect the connecting pin attached to the flux spray recovery
It has a connecting hole that is detachably engaged with the connecting pin.
Be equipped with a connecting lever that is attached to the end chain.
The connection pin and the connection hole should be attached and removed with the backing flux.
Single-sided welding equipment that is operated by raising and lowering the spray collecting means.
Place