JPS617035A - Apparatus for producing panel - Google Patents

Abstract

PURPOSE:To produce automatically and continuously panels and to reduce labor by controlling respective devices which are provided successively with bent tubular bodies and form various kinds of panels by the command from a control panel. CONSTITUTION:An integral device is constituted by connecting a tubular body working section A, a worked pipe disposing section B, a welding section C, an inspection section D and a panel manufacturing section E by means of conveyors. The control panel which emits commands for working concerning jobs is provided. The ends of the tubular bodies supplied from a stocker 1 are first beveled by a forming machine 2 in the section A. The tubular bodies are then stocked by kinds into a multi-stege vertical piling stocker 3 and the necessary tubular bodies are supplied therefrom and are bent by a numerically controlled bender 4. The worked pipes are supplied by conveyors 5a, 5b in the section B and are disposed onto a conveyor 6 by an assembling robot 7 moving on moving rails in a direction X and a direction Y. Welding is executed in the section C and a welding inspection is carried out in the section D. The coils of the various shapes are stocked in a stocker 10 in the section E and are supplied to a panel forming robot 11, by which the panels are completed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing bent pipes, and in particular, an apparatus suitable for manufacturing panels of a group of heat exchanger tubes in a boiler by automatically and continuously performing panel processing operations according to control panel commands. Regarding.

Large industrial boilers, including boilers for power plants, have water tubes on the walls of the boiler, and heat transfer tubes are also placed in the flue to save energy. Used as superheater, reheater, etc. Figures 1 and 2 show the economizer 100. The economizer 100 is placed in the flue of a boiler], 01, but the tube body is bent in multiple stages to increase heat recovery efficiency. A single heat transfer panel I7 is formed by a plurality of bent tubes, and by arranging a large number of heat transfer panels via headers, etc., an integrated energy saver is formed as a whole. The number of bent tube bodies (coils) varies depending on the type of boiler, but it can be as few as six or as many as a thousand or more.

The details of the pile that constitutes the economizer will be explained in FIG. 2. One panel in the figure is a.

It is composed of three coils b and c. Looking at the structure of this coil for coil a, large-diameter bent portions a+ and small-diameter bent portions a2 are arranged alternately from the bottom, and a straight pipe portion is arranged between each bent portion, making the coil as a whole. . Coil C is similarly constructed by alternately arranging large-diameter bent portions and small-diameter bent portions, and coil B is constructed such that all bent portions are medium-diameter bent portions bl.

In this way, each coil has a different diameter at its bent portion depending on its placement position, and the number of bent portions formed also differs depending on the installation position of the panel. It takes a lot of effort and time to properly combine the panels using the support fittings 102 and the like to form a panel.

The outline of the coil manufacturing method is explained in order: (1
) Cutting one side of the straight pipe and forming a groove in the cut part, (2) Bending the side where the groove is formed, (3) Cutting the end opposite to the bending side and forming the groove. Processing, (4) Arranging multiple processed pipes so that they can be welded together, (5)
This involves dowel welding of each processed pipe, and (6) attachment of the auxiliary fitting 102 (see Fig. 2). In addition, in this manufacturing process, each welded part is inspected (by AE, by X-ray, etc.). These (1) or 5)
Each of the processes is performed by machines such as bevel processing machines and pipe benders, but moving the vibrator to the next process, setting the curvature of the vibrator, positioning the processing vibrator, etc. are all done manually and are extremely time consuming. It requires a lot of effort.

In addition, it is necessary to simultaneously process tubes of the same shape as much as possible to increase machining efficiency, so machining of other shapes is stopped until the machining of the same shape is completed. is stocked. As a result, a large number of processed pipes are kept in stock, sometimes reaching several hundred pipes and requiring a large space. In this way, processed pipes of each shape are stocked, and welding is started after all processed pipes have been stocked. This requires a huge amount of space for stock, and since processing is done in batches, equipment required for other processing is idle while one processing is being carried out, which is uneconomical.

The present invention has been constructed in view of the above-mentioned problems, and provides an apparatus that can automatically and continuously form panels of various tube bodies constituting a group of heat transfer tubes, etc. in response to commands from a control panel (not shown). There is a particular thing.

In short, this invention has a control panel that issues processing commands, and includes a processing section for the tube constituting the coil, an arrangement section for the processing tube, a welding section,
This is a device that includes deep scratches, panel components, etc.

Examples of the present invention will be described below.

FIG. 3 is a diagram conceptually showing the arrangement of each part of the device according to the present invention. In the figure, symbol A is the tube processing section, B is the processing tube arrangement section, C is the welding section, D is the inspection section, and E is the panel manufacturing section. Between these sections A to E, there is a conveyor that conveys the processed product. By connecting the two, the entire device is constructed as an integrated device. A control panel (not shown) is provided for issuing processing commands regarding work.

First, looking at the tube processing section A, reference numeral 1 is a tube stocker, 2 is a groove forming machine that forms a bevel on the end of the tube supplied from this stocker, and 3 is a tube that has completed groove formation. This is a multi-stage vertical stocker that stores a large number of tube bodies in the vertical direction, and is configured to stock tube bodies of different lengths and diameters by type and supply the necessary tube bodies. 4 is a bender that bends the pipe body supplied from the stocker 3, and is numerically controlled (
N'(!> is performed.

FIG. 4 shows the specific structure of the tube processing section, in which 1 is a stocker and a large number of tubes 103 are arranged. A groove forming machine 2 is attached to the stocker 1 to form a groove at one end of the tube 103 and adjust the tube to a required length.

In this way, the first-stage processed tube bodies (j) are stored by type in the predetermined grooves 32L of the multi-stage vertical stacking stocker 3.Storage in the grooves is carried out using the lid formed at one end of each groove. and pins (none of which are shown) are operated as appropriate, and each lid is closed and the tube is rolled until a predetermined point is reached, and the lid is opened and the bottle is set upright and the tube is rolled. Drop the pipe into the stocker 3 and stock it.Next, if necessary, place the specified pipe into the stocker 3.
A bent portion is formed with a predetermined curvature by the No. solder 4.

In the processed tube arrangement section B, processed tubes with grooves and bent portions formed are supplied by conveyors 52 and 5b. 7
is an assembly robot that arranges these processed tubes so as to form a single coil, and is able to move freely in the X and Y directions using moving rails, and arranges the processed tubes on a conveyor 6.

FIG. 5 shows the specific structure of the tube processing section A and the processing tube arrangement section. Note that the reference numeral 15 in the figure is a manibu 1 node that transports the processed pipe to the J conveyor 5a.

Further, each processed pipe 110 is placed at a predetermined position by the robot 7 and is moved to the next welding part C by a conveyor 6 serving as a stand. In some cases, the processed pipe placement portion B and the welding portion C may be integrally formed so that they can be welded on the spot after the arrangement is completed.

In the case shown in FIG. 3, the welding part C is independent, and each welding part is welded together by the welding device 8 at GJ to form an integral coil.

The quality of the integrally formed coil is inspected by an inspection device 9 in the inspection section, focusing on the welded portion. This inspection is performed using methods such as ultrasonic flaw detection (AE) and X-ray flaw detection.

In panel manufacturing iE 11, coils of various shapes, such as coils 2, b, and C in FIG. 2, are stocked in a coil stocker 10 and supplied to the panel forming robot 1. Here, each coil is arranged so as to be able to form a panel, and in this state, supporting metal fittings are attached by a panel forming robot (11) to complete the pile.

Fig. 6 shows the work of forming a pipe using the device according to the present invention, in which a beveling 104 is formed on one end of the vibrator]-03, and a bending process is performed. tube 1
05, each processed pipe 105 is arranged for coil formation, and each processed pipe is butt welded] 06 is connected to form an integral coil 107, and inspected centering on welded part 1.06. 108, and then a plurality of coils 07 are arranged and integrally formed with the support fittings 102 to form the panel 1.
Form 09.

By implementing this invention, pipe processing, coil formation, inspection, and panel formation can be performed automatically in a continuous processing flow according to commands from the control panel. It can be done easily and can significantly reduce labor.

In addition, the equipment for each process is always in operation, so some equipment will not be idle, and there is no need to stock large quantities of processed pipes, so a large space for stocking processed pipes can be eliminated. can.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of the boiler, Fig. 2 is a perspective view of panels constituting one boiler heat exchanger tube group, Fig. 3 is a conceptual diagram showing the arrangement of the device according to the present invention, and Fig. 4 5 is a perspective view of a stocker and a pipe bender, FIG. 5 is a perspective view showing a specific example of the structure of the apparatus centering on the processing pipe arrangement section, and FIG. 6 is a schematic diagram showing the working process by the apparatus of the present invention. K... Stocker a... Bevel forming machine 3.
...Multi-stage vertical stacking stocker 4...Pipe bender 103...Pipe body]
05... Processed pipe 107... Coil 10
9... Panel A... Tube processing section B...
・Processed pipe arrangement part C...Welding part D...
Inspection Department E...Panel Production Department No. 6 ◇ ○ ◇ ◇

Claims (1)

[Scope of Claims] 1. In a device that forms a panel by bending and connecting pipe bodies, a pipe processing section; a processing pipe arrangement section for arranging the processing pipes formed in the processing section; Consisting of a welding section that welds arranged processed pipes to form coils, and a panel manufacturing section that forms an integrated panel from each coil, it is configured to automatically manufacture panels according to commands from the control panel. Panel manufacturing equipment featuring: 2. The panel manufacturing apparatus according to claim 1, further comprising an inspection section for inspecting the quality of the coil centered on the welding section, between the welding section and the panel production section. 3. The pipe processing section is equipped with a stocker, a bevel forming machine that forms a bevel on the pipe supplied from the stocker, and a multi-stage vertical system that stocks each pipe according to its shape, material, size, etc. 3. The panel manufacturing apparatus according to claim 1, comprising a stacking stocker and a pipe bender for bending the pipe bodies supplied from the multi-stage vertical stacking stocker.