JPS62292296A - Automatic assembling and welding equipment for piping - Google Patents

Abstract

PURPOSE:To eliminate or reduce labor and to improve productivity by loading a flange positioning device and an assembling and welding equipment of a pipe and a flange on a movable carriage and a fixed carriage to operate these automatically in order and performing the assembly and welding by one equipment. CONSTITUTION:The flange 2 is brought in a chuck main body 16 and the centering is performed and the positioning of a bolt hole of the flange 2 is performed by a flange bolt hole detecting and positioning chuck mechanism 15. The flange 2 is brought in a welding chuck mechanism 18 and chucked by a welding chuck main body 19. The similar operation is also performed at the fixed carriage side. The movable carriage 6 is advanced and a pipe supporting movable carriage 31 is slid and the pipe 1 is inserted into a flange 2a and the flange 2 at the chuck main body 19 side is inserted into the pipe 1. The chuck main body 19 is rotated and the inside and the outside of the flanges 2 and 2a at both sides of the pipe 1 are subjected to the downward fillet welding with four electrodes at the same time by welding torches 23, 24, 23a and 24a without tacking the assembled pipe 1.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an automatic pipe assembly and welding device suitable for automatic assembly and welding of sacrificial pipes for ships.

[Conventional technology]

Conventionally, in piping work for ship equipment, the perspective view of Figure 4 (A
), when assembling the flanges or sleeves (hereinafter referred to as flanges) 2, 2 at both ends of the pipe 1, the positions of the bolt holes 5 of each flange 2.2 will be in the relationship shown in the production drawing. must be positioned accordingly. In other words, when the current position of the bolt hole 5 of one flange 2 is taken as the reference position, the position of the bolt hole 5 of the other opposing flange 2 relative to the reference position is determined in the production drawing. Also, determine its position during assembly work.

Generally speaking, the opposing bolt holes 5 are positioned at the same position as shown in the perspective view of FIG. 5 (A), but as shown in FIG. or rotate one flange 2 to connect the bolt holes 5 to each other.
In some cases, the position of 5 degrees may be shifted.

However, the assembly work that involves aligning the bolt holes 5 of the pipe 1 and the flange 2 as shown in FIG.
The temporary attachment to pipe 1 is done by welding, but all of this is done by hand, and the pipe 1 and flange 2 assembled in this way are welded at four points simultaneously using welding device 4, as shown in the same figure (C). This will be welded.

However, in sacrificial piping, there are many types of pipe 1 and flange 2 in terms of materials, shapes, etc., and these materials are combined in various ways according to the instructions in the production drawings. are assembled while maintaining the precision of each workmanship. Assembly work is done using a jig called a tacking machine, but due to the variety of workpieces,
Automation is difficult due to constraints such as the need to assemble accurately to the work shape shown in the manufacturing drawings, and everything is done manually, which is inefficient.

In addition, in tack welding, assembly work and main welding work are performed in separate processes, so there is a lot of handling such as transporting workpieces between processes, so it is necessary to devise ways to save labor, and always manage the work balance between processes. There is also a need to do something.

[Problem that the invention seeks to solve]

The present invention was proposed in view of these circumstances, and
The installation of pipes and flanges, which used to be done manually, has been completely automated, and welding has been eliminated for temporary attachment during assembly, and the assembly and welding work can now be performed on one machine. The object of the present invention is to provide an automatic piping assembly and welding device in which all operations are automatically performed by the device, thereby achieving labor saving in this type of work and improvement in productivity.

[Means for solving problems]

To this end, the present invention provides a pair of movable carts and a fixed cart facing each other at both ends of a pipe to which flanges are attached or welded, and a bolt hole position of the flanges mounted on both carts, respectively. a flange positioning device that detects and positions the pipe on the circumference and then moves it to the end of the pipe; and a flange positioning device that grips the pipe at the end of the pipe, receives the movement of the flange, grips the flange, and moves the pipe to the flange by running the mobile cart. and a welding device for fillet welding the inner and outer peripheries of the assembled pipe and flange, respectively.

[For production]

With the above-mentioned configuration, the assembly work that used to be done by hand for attaching pipes and flanges has been completely automated, and welding is no longer required for temporary attachment during assembly work, and the assembly work has become easier. It is possible to obtain an automatic piping assembly and welding device in which all welding work is automatically performed by one device, thereby achieving labor saving in this type of work, improvement in productivity, etc.

〔Example〕

An embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a side view thereof, Fig. 2 is a plan view thereof, and Fig. 3 is an explanatory view of its operation process.

In the above figure, the configuration of the device can be roughly divided into a mechanism on the movable trolley 6 side having wheels provided on the main body frame 3 and a mechanism on the fixed trolley 6a side.

On the movable trolley 6 side, an optical fiber switch 13. The proximity switch 14 is fixed to the support column 1.2. The positioning moving cart 8 of the flange bolt hole detection and positioning chuck mechanism 15 is mounted on a slide rail 7 provided on the moving cart 6, and is driven by an electric motor 10.
In addition to being able to move back and forth on the slide rail 7, the electric motor 10 causes the chuck mechanism to swing forward by 90 degrees, the electric motor 11 rotates the chuck mechanism 15 horizontally, and the electric motor 17 rotates the chuck mechanism. The main body 16 can be opened and closed.

The welding chuck mechanism 18 is fixed on the movable cart O. The welding chuck body 19 is supported by support rollers 20 and rotated by an electric motor 21. Further, the welding chuck main body 19 is automatically opened and closed by a pneumatic nut tightening machine 22.

The flange inner side welding torch 26 and the flange outer side welding torch 24 are fixed to the welding chuck mechanism 18 via a torch mount 25, and are rotated by a rotating motor 26 from the evacuation point during welding when loading and unloading the workpiece. The torch is moved to the torch setting point, and the motor 27 positions the torch in the vertical direction, and the motor 28 positions the torch in the pipe axial direction.

The pipe centering roller 32 is mounted on a slide rail 36, is provided on the pipe support moving trolley 31, and is opened and closed by a handle 65.

The pipe support movable trolley 31 is freely mounted on a slide rail 60 provided on the movable trolley B, and can be moved back and forth. Further, a pipe support roller 34 is provided on the pipe support moving cart 61, and can be raised and lowered using a handle 36.

Next, the operation will be described with reference to FIG. 3, which is an explanatory diagram of the operating process.

First, in the same figure (A), the flange 2 is the chuck body 1.
6, it is chucked and centered. Next, in the same figure (B), while horizontally rotating the flange bolt hole detection positioning chuck mechanism 15 with the electric motor 11, the optical fiber switch 16. Proximity switch 1
4 to position the bolt holes of the flange 2. After that, in the same figure (C), the flange bolt hole detection and positioning chuck mechanism 15 is connected to the electric motor 1.
Bend forward 90 degrees at 0. Next, in the same figure (D), the chuck mechanism 15 is driven by the electric motor 10, and the flange 2 is carried into the welding chuck mechanism 18.

Furthermore, in the same figure (E), the flange 2 carried in is automatically chucked by the welding chuck main body 19 by the pneumatic nut tightening machine 22. After that, in the same figure (F), when the flange 2 is chucked to the welding chuck main body 19, the flange bolt hole positioning chuck mechanism 1
The chuck body 16 of No. 5 releases the flange 2, travels and turns, and returns to its original position.

The above operations are performed in the same way on the fixed side.

Note that the pipe 1 is centered by a pipe centering roller 32 and is on standby.

Next, in CG of the same figure, when the moving carriage 6 starts moving forward, the pipe support moving carriage 61 slides, and the flange which has been chucked in the welding chuck body 19a in advance in the same manner as the chucking mechanism on the moving carriage side is slid. Pipe 1 to 2a
is inserted. Next, the movable cart 6 moves further forward and inserts the flange 2 on the side of the chuck body 19 into the knob 1.

After the end face of the pipe 1 is captured by an optical switch 29, the insertion amount of the pipe 1 is controlled by counting electric pulses (not shown) provided on a roller 34 to control the traveling stop of the movable trolley 6 so that it reaches a specified amount. .

While maintaining the assembled state of the pipe 1 assembled in this way, the welding chuck body 19, 19a is rotated for temporary attachment without welding, and the welding torches 23, 24, 2
3a and 24a, the inner and outer surfaces of the flanges 2.2a at both ends of the pipe 1 are simultaneously downward fillet welded using four electrodes.

In the same figure (H), after the above-mentioned welding is completed, the movable trolley 6 moves backward to release the chucking of the flange 1. The pipe 1 is placed on a pipe support moving carriage 61°3ia. These controls are automatically performed by an automatic control device (not shown).

〔Effect of the invention〕

In short, according to the present invention, a pair of movable carts and a fixed cart face each other at both ends of a pipe to which flanges are attached and welded at both ends, and a pair of movable carts and a fixed cart are mounted on the above-mentioned both carts, respectively.
A flange positioning device that automatically detects the bolt hole position of the flange, positions it circumferentially with respect to the pipe, and then moves it to the pipe end; and a flange positioning device that grips the pipe at the pipe end and receives the flange movement to move the flange. By comprising an assembly device that grips and automatically inserts the pipe into the flange by running the movable trolley, and a welding device that performs fillet welding of the inner and outer periphery of the joint between the assembled pipe and the flange, respectively, The installation of pipes and flanges, which used to be done manually, has been completely automated, and welding has been eliminated for temporary attachment during assembly, and the assembly and welding work can now be performed on one machine. The present invention is industrially extremely useful because it provides an automatic piping assembly and welding device in which everything is automatically performed by the device, resulting in labor savings and improved productivity in this type of work.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the automatic piping assembly and welding apparatus of the present invention, FIG. 2 is a plan view thereof, and FIG. 6 is an explanatory view of its operating process. FIG. 4 is a perspective view showing a conventional assembly welding method, and FIG. 5 is a perspective view showing the positional relationship of flange bolt holes in FIG. 4. 1...Pipe, 2...Flange, 3...Body frame,
6... Moving trolley, 6a... Fixed trolley, 7... Slide rail, 8... Positioning moving trolley, 10, 11° 17... Motor, 13... Optical fiber switch, 14... - Proximity switch, 15... Flange bolt hole detection and positioning chuck mechanism, 16... Chuck body, 18... Welding chuck mechanism, 19...
Chuck body, 20... Support roller, 21, 26,
27, 28...Motor, 22...Pneumatic nut tightening base, 23.24...Welding torch, 25...Torch mount, 29...Light switch, 30.33...Slide rail, 31... Pipe support moving trolley, 62...
...Pipe centering roller, 34...Pipe support roller, 35.36...Handle.

Claims (1)

[Claims] A pair of movable carts and a fixed cart face each other at both ends of the pipe to which flanges are to be attached and welded, and the bolt holes of the flanges mounted on both carts are automatically detected, and the circumference of the pipe is detected. A flange positioning device that moves the pipe to the end of the pipe after performing the above positioning, and an assembly that grips the pipe at the pipe end, grips the flange as the flange moves, and automatically inserts the pipe into the flange by running the movable trolley. 1. An automatic piping assembly and welding device comprising: a welding device for fillet welding the inner and outer periphery of the joint between the assembled pipe and the flange, respectively.