JP3229017B2 - Single-sided welding backing tape automatic attaching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic backing tape applying apparatus applied to one-side welding of a hydraulic steel pipe or the like.

[0002]

2. Description of the Related Art Conventionally, in welding work requiring high quality of hydraulic steel pipes and the like, there is no effective single-sided welding apparatus.
Longitudinal sectional view of and as shown in cross-sectional view of FIG. 18, the steel pipe P
After the one-side welding by the automatic welding torch A on the inner surface of the steel plate, the worker M has to perform manual welding on the concrete C preliminarily cast, so that the outer surface is provided with a clearance W where the worker M can enter. Then, a relatively large diameter tunnel N is excavated.

[0003]

However, since such a conventional operation requires excavation of a large-diameter hole,
It requires enormous cost and construction time. A single-sided welding apparatus used in shipbuilding or the like generally uses a backing tape T as shown in a cross-sectional view of FIG. 19 , but conventionally, this is directly attached by an operator using a magnet or the like. Since one-side welding is performed, and the backing tape is also removed by the operator after welding, a large number of man-hours and costs are required.

[0004] The present invention has been proposed in view of such circumstances, the steel pipe or the like by saving human and labor-saving manner one side welding from the inner surface reducing the cost and construction time economical one-side welding Urato An object of the present invention is to provide an automatic tape attaching device.

[0005]

SUMMARY OF THE INVENTION Therefore , the single-sided solution of the present invention is provided.
The automatic backing tape application device is used for automatic welding of single-sided backing tape applied to one-sided internal welding of steel pipes and other welded materials
A single-sided welding backing tape automatic application device
Is formed along the outer surface of the groove on the outer peripheral surface of the material to be welded.
The angle rails laid in an arc shape are
The drive roller and the pressure roller driven by the
Run frictionally along the same angle rail while pinching
It has a backing carriage, and the backing carriage has a backing tape pressing mechanism
Is supported, and the backing tape pressing mechanism
Supply reel to supply and winding to wind up the backing tape
The reel and the above-mentioned supply driven by the output of the above-mentioned motor
Feed the backing tape drawn from the reel to the backing
A backing tape feed mechanism that runs at the same speed as the running speed
Press the backing tape sent by the
The backing tape pressing mechanism and the backing tape pressing mechanism
Wind up the backing tape that has been pressed against the back of the groove
And a backing tape winding mechanism for winding on a reel .

[0006]

According to the configuration of the automatic one-sided welding backing tape application apparatus , the backing tape is sent out by the moving amount of the backing truck, and the backing tape is applied to a material to be welded such as a steel pipe. Is fixed without being displaced statically, and is further supported by a sliding copper abutment on the outside, so that the weld metal automatically welded from the inside is received, so that good single-sided welding is possible. After welding, the attached backing tape is peeled and wound forward without any influence by a motor-driven take-up reel with a torque limiter.

[0007]

FIG. 1 is a side view, FIG. 2 is an outer front view of FIG. 1, and FIG.
2 is a bottom view of FIG. 2 as viewed from below, FIG. 4 is an outer front view of the upper part of the main body of FIG. 1, FIG.
7 is a side view showing the mounting procedure of the backing tape pressing mechanism, FIG. 8 is a plan view of the backing tape pressing mechanism of FIG. 7, FIGS. 9, 10, 11, and FIG. 12 and FIG.
Are IX-IX, XX, XI-XI, XII-XII,
XIII-XIII arrow sectional view, FIG. 14 winding drive-sectional view of the reel of FIG. 3, FIG. 15 is the device of the present invention partly broken fragmentary vertical cross-sectional view showing a working condition of one side welding of penstock by FIG 16
FIG. 16 is a sectional view taken along the arrow XVI-XVI in FIG. 15.

First, in FIGS. 1 to 4, reference numeral 1 denotes a main body.
The pair of right and left upper wheels 2 and 2 are mounted on the arc-shaped angle rail L, and the pressure roller 3 and the driving roller 4 press the angle rail L between the inner and outer surfaces thereof as shown in FIG. Reference numeral 5 denotes a screw handle, as shown in FIG. 5, which is provided on the upper portion of the main body 1 and is screwed with the screw member 6 to project the tip pin 8 via the built-in leaf spring 7; The upper end of the vertical arm 10 supported by the pin 9 is pressed, and the pressure roller 3 at the lower end is pressed against the inner surface of the angle rail L. Above the angle rail L, as shown in FIG. 6, a drive roller 4 having a baked rubber 12 fitted to the lower end of the output shaft of the vertical motor 11 and a collar 13 for preventing derailing is provided on the angle rail L. It comes into contact with the outer surface.

In FIG. 6, the shaft 14 of the driving roller 4 is connected to a backing tape pressing mechanism 20 attached to the lower portion of the main body 1 via gears 15, 16 and a universal joint 17 with pins 18, 19 (FIG. 17). Attached backing tape feed roller 21
(FIG. 1) to provide a driving force.

In this structure, the backing tape pressing mechanism 20 has a backing tape supply reel 22 on one side and a take-up reel 23 on the other side, as shown in FIGS.
The backing tape T from the supply reel 22 passes through the guide rollers 24 and 25, is pressed by the pressing roller 26 and the feed roller 21, and is firmly pinched by the needle on the outer surface of the roller 21. It is pulled out from the supply reel 22 and brought to the back surface of the groove G. At this time, the holding tool 28 supported by the pin 27 on the backing tape pressing mechanism 20 includes a rod 28a with a male thread and a knob 28 with a female thread.
The pressing roller 26 is pressed against the feed roller 21 by being adjusted by b and the spring 29. As shown in FIGS. 8 and 10, the sliding copper abutment 30 behind the backing tape T is pressed via a set bolt 31 and a spring 32 provided on the backing tape pressing mechanism 20. and, a backing tape T is,
As shown in FIG.
The motor 36 (FIG. 4) provided inside the take-up reel 23 (FIG. 3) through the guide roller 35 (FIG. 1) and the output shaft torque limiter 37 (FIG. 14) ) via a U _o - has a Mugiya 38 in the take-up reel 23 to rotate - arm-c _o. In this manner, the backing tape T is statically supported on the back side of the groove G, is pressed by the sliding copper abutment 30, and is disposed inside the center of the sliding copper abutment 30 inside. Good single-sided welding can be performed by receiving the weld metal of A.

[0011]

According to the automatic one-sided welding backing tape application apparatus, as shown in the longitudinal sectional view of FIG. 15 to the transverse sectional view of FIG. One side can be welded from the inner side without the need for a worker to enter, and the drilling diameter of the outer peripheral hole of the steel pipe can be reduced, thereby reducing the cost of civil engineering work and shortening the construction period.

In short, the single-sided welding backing tape automatic of the present invention
According to the sticking device , one side automatic welding of the inner surface of the material to be welded such as steel pipe
In one side welding backing tape automatic sticking machine applied in
And the same one-sided welding backing tape automatic application device
Arranged along the outer surface on the outer peripheral surface of the material to be welded in an arc shape
The angle rails that have been
Do not clamp between the driving roller and the pressure roller
A backing truck that frictionally runs along the same angle rail
The backing carrier has a backing tape pressing mechanism.
And the backing tape pressing mechanism supplies the backing tape.
Supply reel and take-up reel for winding the backing tape
And the supply reel driven by the output of the motor
The speed of the backing cart is determined by the feed of the backing tape drawn from
Backing tape feed mechanism that performs at the same speed as
Backing tape that presses the backing tape sent by
The groove by the loop pressing mechanism and the backing tape pressing mechanism
Take up the backing tape that has been pressed against the back side on the take-up reel
With a backing tape winding mechanism that winds the steel pipe to the inside, it is possible to weld one side of the steel pipe from the inside with labor saving and labor saving.
Can, cost reduction has been made, it is drawing Rukoto the shortening the construction period,
An economical backing tape automatic application device can be obtained , and an industrially extremely useful single-sided welding backing tape automatic application device is provided.
Can be offered .

[Brief description of the drawings]

FIG. 1 is a side view of an automatic backing tape applying apparatus according to an embodiment of the present invention.

FIG. 2 is an external front view of FIG.

FIG. 3 is a bottom view of FIG. 2 as viewed from below.

FIG. 4 is an external front view of the upper part of the main body of FIG. 1;

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

FIG. 6 is a partially enlarged longitudinal sectional view of FIG. 1;

FIG. 7 is a side view showing a mounting procedure of a backing tape pressing mechanism.

FIG. 8 is a plan view of the backing tape pressing mechanism of FIG. 7;

9 is a sectional view taken along the line IX-IX in FIG.

FIG. 10 is a sectional view taken along the line XX of FIG. 8;

11 is a sectional view taken along the line XI-XI in FIG.

12 is a sectional view taken along the line XII-XII in FIG.

FIG. 13 is a sectional view taken along the arrow XIII-XIII in FIG. 8;

14 is a sectional view of a drive unit of the take-up reel shown in FIG. 3;

FIG. 15 is a longitudinal sectional view of a partly broken main part showing a working state of single-side welding of a penstock by the apparatus of the present invention.

16 is a sectional view taken along the line XVI-XVI in FIG.

FIG. 17 is a longitudinal sectional view showing a conventional procedure for one-side welding of a hydraulic pipe.

18 is a cross-sectional view of FIG.

FIG. 19 is an explanatory diagram of conventional single-sided automatic welding in shipbuilding.

[Explanation of symbols]

1 body 2 wheel 3 pressure roller 4 the driving roller 5 screw handle it because 6 binding element 7 the leaf spring 8, 9 pin 10 vertical arm 11 motor 12 baked rubber 13 flange 14 shaft 15 gear 17 joint 18, 19 pins 20 Backing tape pressing mechanism 21 Feed roller 22 Supply reel 23 Take-up reel 24, 25 Guide roller 26 Pressing roller 27 Pin 28 Holder 28a Male threaded rod 28b Female threaded rod 29 Spring 30 Sliding copper leaf 31 Set bolt 32 spring 33, 34 guide roller 35 guide rollers 36 motor 37 torque limiter 38 c _O --time U _o - Mugiya A automatic welding torch C concrete G groove L angle rail M workers N tunnel P steel T backing tape W gap

Continued on the front page (72) Inventor Nozomu Watanabe 1-1-1, Wadazaki-cho, Hyogo-ku, Kobe-shi, Hyogo Prefecture Inside Mitsubishi Heavy Industries, Ltd.Kobe Shipyard (72) Inventor Ryoichi Tatsumi Wadazaki-cho, Hyogo-ku, Kobe-shi, Hyogo 1-1-1 1-1 Mitsubishi Heavy Industries, Ltd. Kobe Shipyard (58) Field surveyed (Int. Cl. ⁷ , DB name) B23K 37/06

Claims (1)

(57) [Claims] (1) For one-side automatic welding of an inner surface of a material to be welded such as a steel pipe .
Is a single-sided welding backing tape automatic application device
And the one-sided welding backing tape automatic application device
Is laid along the side on the outer peripheral surface of the material to be welded in an arc shape.
Angle rail is driven by a motor mounted on its own
While pressing between the driving roller and the pressure roller
There is a backing car that frictionally runs along the same angle rail
Then, a backing tape pressing mechanism is supported on the backing truck,
The backing tape pressing mechanism supplies the backing tape
A reel, a take-up reel for winding the backing tape,
Driven by the output of the motor and pulled from the supply reel
Set the feed of the backing tape to the same speed as the backing truck.
With backing tape feed mechanism that performs at one speed and the same feed mechanism
Backing tape pressing to push the backing tape sent to the back of the groove
To the back side of the groove by this mechanism and the backing tape pressing mechanism
Wind the backing tape that has been pressed onto the take-up reel
And a backing tape take-up mechanism .