KR100425870B1 - Apparatus and method for manufacturing flanged cylindrical units of storage tank, and flanged cylindrical units manufactured thereby - Google Patents

Abstract

The present invention is for manufacturing a flange-shaped cylindrical unit constituting the storage tank of the cylindrical structure, in order to transfer the strip 111 from the strip coil 110 that is the material of the cylindrical unit, the first large electric motor 830 and Vertically-corrected straightening so as to smoothly spread the strip feeder 200 that rotates the turntable 220 by receiving power from the first chain / gear connector 290 and the strip 111 conveyed from the strip feeder 200. Rollers for rotationally coupled to a second chain / gear connecting portion 390 connected to the first large electric motor 830 and to the fixed blade 421 to cut the strip 111. A strip cutter 400 having a pair of first actuators 410 and 411 for operating the working blade 420 and a hydraulic installation 460, and flanges 112 and 113 at both ends of the strip 111. The vertical bending rollers 510, 511 to 570, 571 are formed to have a second large motor ( The flanges 112 and 113 are not twisted when the bent strip 111 and the flanged bending machine 500 rotatably coupled to the third chain / gear connecting portion 590 connected to the 831 and the cylindrical structure. And a flange bending part 600 coupled to the second actuator 610 and 611, the pressure roller 620, the driving roller 630, and the first and second bending rollers 640 and 650 so as to be bent without bending. .

Description

APPARATUS AND METHOD OF MANUFACTURING FLANGE CYLINDER UNITS FOR STORAGE TANK AND FACTORY MANUFACTURED FLANGE CYLINDER UNITS

The present invention relates to an apparatus and method for manufacturing a flanged cylindrical unit of a storage tank, and a flanged cylindrical unit manufactured by the same, and in particular, a plan used for assembling a semi-permanently used stainless steel cylindrical storage tank into a multi-stage cylindrical structure. An apparatus and method for manufacturing a flanged cylindrical unit of a storage tank for manufacturing a topographic cylindrical unit, and a flanged cylindrical unit manufactured thereby.

In general, the cylindrical storage tank is for storing powder raw materials such as oil and cement, living and factory water, etc., and is configured to effectively support the internal pressure relatively than the rectangular storage tank.

Such cylindrical storage tanks are theoretically best manufactured with integral or minimal welds and have the best durability and water resistance. The cylindrical storage tank is a large cylindrical structure having a diameter of 5m to 20m. When simply bending and welding, the cylindrical storage tank should be welded with a relatively thick stainless steel plate and additionally reinforcing section steel for structural stability. This complicates the manufacturing process, brings with it a relatively large amount of additional material, which is uneconomical and difficult to mass produce. In addition, it solves all of the manufacturing problems that cannot be manufactured efficiently in automated machines, the leaking airtight along the bolt construction line or the welding line, and transporting the finished or assembly parts to the place where they are actually installed. It must be practical.

The stainless steel plate cutting device according to the prior art is a device for manufacturing a plate, which is a main assembly of the aforementioned storage tanks, and cutting devices, bending devices, and bending devices used in general sheet metal work are used.

Here, the cutting device cuts the stainless steel sheet to the specifications necessary for the assembly of the storage tank. The plurality of plates thus cut are moved to the bending device by hand or by a predetermined conveying means, and have a curved shape having a predetermined circumference in the bending device again, and then the plates are overlapped and joined by the bending devices. Is formed.

Conventional cylindrical storage tanks on the market attempt to overcome only the leakage problems and transport problems due to welding, a number of plates that have been processed in a predetermined width by a general stainless plate cutting device, and the sealing rubber As a combination of members and bolts, the overlapping portions of the plates are drilled, and the bolts are coupled to the perforated holes to be assembled to have a cylindrical structure.

However, the existing cylindrical storage tanks are bolted while overlapping the plate pieces, which is very inefficient and very inconvenient in manufacturing, and due to the structural stress agglomerated in a number of bolted sites, leakage occurs after a certain time of use. It is easy to occur, providing irregular inner surface is formed moss, sediment, etc. in the overlapping portion and the bolted portion of the plate is generated a problem of cleanliness.

In addition, the conventional cylindrical storage tank has a structural surface connected to the bolt construction and the sculpture depending on the manual work, the uniform load does not work around the cylinder, the stress state is very unstable disadvantage.

In addition, almost the same problems are found in the manufacture of the existing rectangular storage tank, in particular, the rectangular storage tank is welded in a number of welded to have a lattice shape inside the storage tank in order to form a structure capable of supporting the cohesion of water With reinforcing pipes, it is difficult to keep the storage tanks used for a long time clean. That is, when assembling the existing cylindrical storage tank or rectangular storage tank with a plurality of plates, there is a disadvantage that the corrosion occurs in a relatively large number of welding seams or bolt construction lines, and thus the contents of the storage tank can not be kept clean There are disadvantages.

Therefore, there is a need for a cylindrical structure having a minimum weld seam in an integrated body having excellent structural stability, and a lot of researches on the manufacturing method of a semi-permanent storage tank excellent in manufacturability, productivity and economy are underway.

Therefore, an object of the present invention is to pass the strip through the strip feeder, the deformation corrector, the strip cutter, the flange bending machine and the flange bending machine installed on the upper surface of the substructure, thereby resisting bending deformation as one-piece, excellent structural rigidity, relatively wide welding An object of the present invention is to provide a flanged cylindrical unit manufacturing apparatus of a storage tank for providing a portion and manufacturing a flanged cylindrical unit having a space for filling insulation.

In addition, another object of the present invention is to continuously mass production through a series of processes for passing stainless steel strips to devices arranged in a straight line using a PLC control panel, a single cylindrical body of a large cylindrical structure of several tens of meters in diameter It is to provide a method of manufacturing a flanged cylindrical unit of the storage tank that can be formed with.

Still another object of the present invention is to provide a flanged cylindrical unit which has a large cylindrical structure of several tens of meters in diameter and is resistant to torsional deformation and can provide a relatively large welding area.

1 is a plan view for explaining the configuration of the flange-shaped cylindrical unit manufacturing apparatus of the storage tank according to an embodiment of the present invention,

Figure 2 is a front view for explaining the arrangement of the main portion of the flanged cylindrical unit manufacturing apparatus of the storage tank shown in Figure 1,

3a and 3b are enlarged side perspective views for explaining the strip feeder of the flanged cylindrical unit manufacturing apparatus of the storage tank shown in FIG.

4A and 4B are an enlarged plan view and a front view for explaining a deformation corrector of the flanged cylindrical unit manufacturing apparatus of the storage tank shown in FIG.

5 is an enlarged perspective view for explaining a strip cutting machine of the flange type cylindrical unit manufacturing apparatus of the storage tank shown in FIG.

6 is an enlarged front view for explaining a flange bending machine of the flange-type cylindrical unit manufacturing apparatus of the storage tank shown in FIG.

FIG. 7 is a side cross-sectional view arranged from a cross section cut along the line A-A to a cross section cut along the line G-G in order to explain the operation relationship of the flange bending machine shown in FIG. 6;

8A and 8B are an enlarged plan view and a side view for explaining a flange bending machine of the flange type cylindrical unit manufacturing apparatus of the storage tank shown in FIG.

9 is a block diagram illustrating a method of manufacturing a flanged cylindrical unit of a storage tank according to the present invention.

Figure 10 is a perspective view for explaining the shape of the flanged cylindrical unit made by the flanged cylindrical unit manufacturing apparatus of the storage tank according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: substructure 110: strip coil

111, 111 ', 111 ": Strip 112, 113: Flange

120: flanged cylindrical unit 200: strip feeder

220: turntable 290, 390, 590, 690: chain / gear connection

300: deformation corrector 400: strip cutting machine

410, 411, 610, 611: actuator 440: length measuring instrument

460: hydraulic equipment 500: flange bending machine

600: flange bending part 830, 831: large electric motor

Objects of the present invention as described above include a strip feeder coupled to rotate a turntable by receiving power from a first large electric motor and a first chain / gear connection to transfer the strip from the strip coil, which is the material of the cylindrical unit. A deformation corrector rotatably coupled with vertically oriented calibration rollers to a second chain / gear connection connected to the first large electric motor, to smooth out the strip conveyed from the strip feeder, and to fix the strip, A third chain connected to the second large motor by means of a strip cutter having a pair of first actuators for operating the working blades toward the blades and hydraulic equipment, and vertically bending rollers to form flanges at both ends of the strip; Flange bends rotatably coupled to the gear connection, and twisting of the bent strips into the cylindrical structure prevents the flanges from twisting. A flanged cylindrical unit manufacturing apparatus of a storage tank, comprising: a flange bending portion coupled to a second actuator, a pressure roller, a driving roller, and a first and a second bending roller so as to bend freely.

In addition, another object of the present invention is the step of mounting the strip coil to the strip feeder and then turning on the system, releasing the strip from the strip coil and transferring it to the deformation straightener, and smoothing the strip with the calibration rollers of the deformation straightener. And bending both ends of the strip with a flange bending machine to form the upper and lower flange portions, cutting the strip measuring the cutting length with a measuring machine using a strip cutter, and forming the upper and lower flange portions. It is achieved by a flanged cylindrical unit manufacturing method of the storage tank, characterized in that the step consisting of bending the flange with a bending machine.

In addition, another object of the present invention is achieved by a flanged cylindrical unit, characterized in that the upper and lower flanges are integrally formed at both ends to minimize torsional deformation due to its own weight and provide a relatively large welding area. do.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In the drawings, Figure 1 is a plan view for explaining the configuration of the flange type cylindrical unit manufacturing apparatus of the storage tank according to an embodiment of the present invention, Figure 2 is a flange type cylindrical unit manufacturing apparatus of the storage tank shown in FIG. It is a front view for demonstrating the arrangement relationship of main part.

As shown in Figure 1 and Figure 2, the lower structure 100 of the flange-shaped cylindrical unit manufacturing apparatus of the storage tank of the present invention, each of the strip feeder 200 and the vertical upright with respect to the upper surface 102, the first A deformation leveler 300 supported by the support beam 380, a strip cutter 400, a flange bending machine 500 supported by the second support beams 580, 581, and a flange bending machine. 600, flange guide rollers 710 and 711, hinge axis guide roller 720, and a plurality of roller guide guides 721, 722 and 723 are arranged. In addition, triangular support bar-shaped guide rollers 730 and 731 positioned to support the flange-shaped cylindrical unit to be bent in a cylindrical shape are located outside the substructure 100.

In addition, the present invention includes a power supply unit 820 connected to a PLC control panel (hereinafter referred to as a control panel) and an external factory power supply (not shown). The present invention is to be operated by the control signal of the control panel 800, and using the first and second large electric motors (830, 831) and the hydraulic installation (460) installed inside and outside the lower structure (100). Machine to manufacture a flanged cylindrical unit (see Fig. 10) semi-automatically or fully automatic by the operator.

First, the substructure 100 is a plurality of reinforcing bars welded in a direction perpendicular to the longitudinal direction inside the plurality of 'I' beams 101 arranged in the longitudinal direction, the upper surface 102 and the lower surface 103 ) Is finished with plates of a predetermined thickness, and a plurality of lids are detachably formed by bolting to the upper surface 102 and the side of the 'I' beam 101 for maintenance. Here, the plurality of equipment installed inside the substructure 100 is composed of a hydraulic installation 460 including a large hydraulic pump and a hydraulic line, the first large electric motor 830, the gear and roller chain coupling First to fourth chain / gear connections 290, 390, 590, 690. Meanwhile, the first to fourth chain / gear connections 290, 390, 590, and 690 are drive gears fixed to the rotating shafts of the first large electric motor 830 and the second large electric motor 831, respectively. The gears are provided with driven gears connected by roller chains to reduce the driving force of the first large electric motor 830 and the second large electric motor 831 to a predetermined reduction ratio so that the strip feeder 200 and the deformation corrector ( The rotational force is transmitted to the roller shafts 300 and the flange bending machine 500 and the flange bending machine 600. In addition, the front of the lower structure 100 is attached to the box-shaped first and second sockets (871, 872) for connecting the power and control signals from the control panel 800. The first socket portion 871 is electrically connected to the first large electric motor 830 that provides power to the strip feeder 200 and the deformation corrector 300, and the second socket portion 872 is a flange bending machine. It is electrically connected to a second large electric motor 831 that supplies power to the 500 and the flange bending machine 600.

In addition, the control panel 800 receives the power boosted by the power supply unit 820 to control the power supplied to the first large electric motor 830 and the second large electric motor 831, the hydraulic line to receive the external hydraulic pressure The hydraulic equipment 460 is connected to each other, wherein the hydraulic pressure of the hydraulic equipment 460 is a pair of first actuators 410 of the strip cutter 400 and a pair of second actuators 610 of the flange bending machine 600. To be passed to the fields. In addition, the control panel 800 includes a power lamp, a power switch, an automatic operation / automatic stop switch, an automatic / manual selection switch, a first actuator hydraulic ON / OFF switch of a strip cutter, and a second actuator hydraulic pressure of a flange bending machine. The operator can operate the machine through the flanged cylindrical unit manufacturing equipment of the storage tank, such as the on / off switch, the strip cutter up / down switch, the deformation straightener roller forward / reverse switch, and the flange bending machine roller forward / reverse switch. It can be controlled.

3A and 3B illustrate the strip feeder 200, which is a side perspective view before mounting the strip coil 110 (hereinafter referred to as a strip coil) made of stainless steel vertically, and a side perspective view after the strip coil is mounted. The strip coil 110 is a coil formed by winding a strip 111 having a predetermined width, and a width of about 1 m to 2 m, in a coil shape, and is a steel product manufactured in a steel mill. Strip 111 is a ferritic stainless steel (product name: STS444), the content of niobium-titanium (Nb + Ti) is less than 0.36%, the content of carbon-nitrogen (C + N) is less than 0.025%, stabilization Niobium-titanium (Nb + Ti) is added as an element and aluminum (Al) is added so that the oxygen content is 0.005% or less, thereby improving the corrosion resistance and the welded part toughness. Therefore, this strip 111 is very inexpensive to manufacture compared to the general '304 stainless steel' or chromium-molybdenum steel (trade name: NSS445M2), and the chlorine ion contained in water has a value higher than 1000 ppm, or the temperature is 80 Since it is excellent in corrosion resistance even when used in a hot water tank maintained at °, it is very suitable as a material of the present invention used as a part for producing a cylindrical storage tank. Typically the strip coil 110 is more than a ton by its own weight.

Therefore, the strip feeder 200 is a circular cap-shaped turntable 220 made of an iron plate having a predetermined thickness so as to vertically support more than a ton of strip coils 110 at a predetermined speed. Has In addition, a gear 212 is mounted on the lower rotating shaft 211 of the strip feeder 200, which is coupled to the first chain / gear connecting portion 290 (see FIG. 2) to form the first large electric motor. It is adapted to receive the rotational torque force from 830. In addition, an upper portion of the lower rotation shaft 211 is vertically pierced through the upper surface 102 of the lower structure 100. The turntable 220 is fixed to the rotating shaft 211 penetrated in this way, so that the turntable 220 can rotate simultaneously with the rotating shaft 211. The outer periphery of the turntable 220 is formed with a plurality of extension ends 222 protruding in the shape of a cross, a hub 221 protruding in the shape of a hat is formed in the center of the turntable 220. The hub 221 is formed to have a diameter corresponding to the inner diameter of the strip coil 110, and the cone shape of the upper portion helps the strip coil 110 to correct the posture on the upper surface of the table 220. give. The shaft 221 of the hub 221 has a rotation shaft 221 extends to have a predetermined height, and the upper end of the rotation shaft 221 has a disk-shaped cover (to fix the strip coil 110 to the table 220) ( 230 is screwed in. In addition, a plurality of identification holes 231 are formed in the disc-shaped cover 230, and a traction ring 232 is formed to protrude from the shaft center. Meanwhile, the strip feeder 200 fixes the plurality of safety bars 240, 250, 260, and 270 to the upper surface 102 of the undercarriage 100. Each of the safety bars 240, 250, 260, and 270 is a 'c' shaped cross-section steel plate, and rollers 241 and 261 are respectively installed on the upper and lower portions of the inner side thereof, so that the strip coil 110 is placed on the table. When simultaneously rotated by the 220, the strip 111 from the strip coil 110 in need, with the role of supporting the strip coil 110 in the lower and side portions to withstand the weight of the strip coil 110 and rotate smoothly. ) To prevent abnormal release.

The strip feeder 200 formed as described above may be rotated forward and reverse by the control panel, thereby extending the strip 111 from the strip coil 110 or rewinding the strip coil 110. Therefore, the strip feeder 200 continuously serves to vertically transfer the strip 111 to the deformation corrector.

4A and 4B are a plan view and a front view, respectively, illustrating a deformation corrector 300 that smoothly unfolds a slightly curved strip 111 in a strip coil state as detailed above.

The deformation corrector 300 is fixed to the upper surface of the substructure 100 in a direction coinciding with the transfer line of the strip 111 vertically transferred from the strip feeder 200. The deformation corrector 300 is provided with a lower plate 301 fixed to the upper surface 102 of the lower structure 100, and the upper plate 302 is provided with a control plate to adjust the play, the lower plate 301 and the upper plate ( A plurality of orthodontic rollers 310, 320 vertically erected between 302 are rotatably coupled to the second chain / gear connector 390. Here, the deformation corrector 300 is vertically erected by bolting the upper plate 302 and the lower plate 301 with a plurality of support shafts 330. In addition, the upper plate 302 is attached to the cantilever guide roller 340 for guiding the strip 111, to guide the transfer of the strip 111 smoothly between the calibration rollers (310, 320).

These orthodontic rollers 310 and 320 are arranged in front of the front, and three in the rear, the front calibration roller 310 is relatively small in diameter, the rear calibration roller 320 is relatively It has a large diameter but the same rotational speed.

In particular, the orthodontic rollers 310 and 320 form a plurality of stretch grooves 350 in the upper portion and the lower portion of the shaft to prevent the strip 111 which is vertically conveyed from slipping down.

The rearward rollers 320 and the front rollers 310 are arranged while maintaining a distance corresponding to the thickness of the strip 111. Accordingly, the strip 111, which is slightly curved out of the strip coil 110, is flattened by the calibration rollers 310 and 320, moving along an imaginary line passing through the gap.

5 is an enlarged perspective view of a strip cutter 400 for cutting a strip having passed through a deformation corrector as described above to a predetermined length.

The strip cutter 400 includes an iron structure 401 having both sides opened to the plate surface. The steel structure 401 has a traction ring 409 in the upper plane, and the lower bottom is bolted to the upper surface 102 of the lower structure described above. The bolted steel structure 401 is fixed in a direction corresponding to the width direction of the lower structure.

In addition, a pair of first actuators 410 and 411 are fixed to the top and bottom of the steel structure 401 in the horizontal direction. Here, the first actuators (410, 411) at the same time to move the piston shaft 415 in the axial direction (f), the hydraulic line (412, 413) and three-way pipe joint 414 and the release valve 416 Is provided to receive the hydraulic pressure from the hydraulic installation. In addition, the working blade 420 is fixed to the end of the piston shaft 415 of each of the first actuator (410, 411). In addition, a fixed blade 421 is erected vertically on the inner surface of the steel structure 401 on the opposite side of the working blade 420, and the strip 1t to 5t thick with the working blade 420 is cut by hydraulic force. It is located to be able to. In addition, the first blade movement distance measuring contact sensor 460 is fixed to the upper portion of the steel structure 401, the piston shaft 415 in accordance with the presence or absence of contact with the transducer 461 moving in the same way as the piston shaft 415 It detects the original position of and transmits the generated position signal to the control panel. In the same manner, a second blade movement distance measuring contact sensor (not shown) for transmitting a position signal generated by detecting a cutting position to the control panel is fixed to the upper portion of the steel structure 401 behind the working blade 420. In addition, at the end of the piston shaft 415, the working blade 420 is arranged inside the guide plate 430 bolted to both sides of the steel structure 401 is slidably coupled, cutting the working blade 420 The clearance adjustment plate 432 for adjusting the angle is disposed between the guide plate 430 and the operating blade 420 is coupled to the adjustment bolt 431 to be movable.

In addition, the inlet portion of the strip cutter 400, the wheel length measuring device 440 for measuring the length of the strip when the strip penetrates through the space 450 between the working blade 420 and the fixed blade 421 Is installed. The wheel length measuring instrument 440 measures the moving distance of the strip and transmits the measurement signal to the control panel. Thus, the strip cutter 400 controlled by the control panel can cut the strip passing through the deformation corrector by a preset distance.

FIG. 6 is an enlarged front view of a flange bending machine 500 for bending both end portions of a strip having passed through a strip cutter as described above into a flange portion having a predetermined width.

As shown in FIG. 6, the flange bending machine 500 is fixed to the upper surface 102 of the substructure 100 in a direction coinciding with the transfer line of the strip passing through the strip cutter. The flange bending machine 500 is fixed to the upper surface 102 of the lower structure 100, the lower plate 502 is provided with each of the first control plate to enable the clearance adjustment, and the second adjustment plate is provided to enable the clearance adjustment It is provided with a top plate 501, rotatably coupling the first to seventh bending rollers erected vertically between the bottom plate 502 and the top plate 501 to the third chain / gear connecting portion 590 (see Fig. 2) It is. Here, the flange bending machine 500 is vertically erected by bolting the upper plate 501 and the lower plate 502 to a plurality of support shafts.

The first to seventh bending rollers 510, 511 to 570, and 571 of the flange bending machine 500 are paired with two roller shafts, respectively, and the upper and lower plans respectively bent in one side direction at both ends of the strip. It forms the branch.

That is, the first to seventh bending rollers bend the flange portion to be formed at both ends of the strip at a multi-step angle, and as a result, form the bent angle at 90 degrees. Of course, when the eighth bending roller and the ninth bending roller (not shown) are further provided, it is also possible to bend the bent angle of the flange portion to a sharper angle, that is, 60 ° or 45 °.

In FIG. 7, a process of bending the strip 111 through the shapes of the first to seventh bending rollers 510, 511 to 570, and 571 illustrated in FIG. 6 will be described. As shown in FIG. 7, the shapes of the first to seventh bending rollers 510, 511 to 570, and 571 are arranged in side cross-sectional views arranged from a cross section taken along a line AA to a cross section taken along a line GG in FIG. 6. You can check it.

First, the pair of first bending rollers 510 and 511 are rotatably coupled to the upper plate 501 and the lower plate 502, respectively, and have a roller shaft and a rear side (right side in the drawing) on the front side (left side in the drawing). ) Has a roller shaft. Each roller shaft has roller header portions 512 and 513 that are symmetrical to each other at the top and the bottom thereof. Here, the roller header parts 512 and 513 are screwed with the threads of the upper and lower roller shafts of the first bending rollers 510 and 511, respectively. In addition, the first bending rollers 510 and 511 are provided with a double nut 514 to move the roller header portions 512 and 513 in the axial direction, so that the clearance h between the roller header portions 512 and 513. It is designed to control.

In addition, the roller header portion 512 of the outer first bending roller 510 has a squeezing surface inclined inward to the shaft center similar to the cone shape, and the roller header portion 513 of the inner first bending roller 511. Similarly to the countersunk head, it has a compressed surface that is inclined outward from the shaft center. Therefore, when the strip 111 enters between the first bending rollers 510 and 511, by the roller header parts 512 and 513 having a pressing surface inclined inwardly to the shaft center and a pressing surface inclined outwardly to the shaft center, The upper and lower flange portions 112 and 113 are each bent at an angle of 30 degrees based on the body portion of the strip 111.

The second to seventh bending rollers 520, 521 to 570, and 571 having the same principle and configuration may be formed by the inclined pressing surfaces of the roller header parts 522, 523 to 572, and 573. The upper and lower flange portions 112, 113 are bent stepwise, for example 45 °, 50 °, 55 °, 70 °, 89 °, 90 °.

Meanwhile, one first auxiliary rollers 525 and 535 for horizontally supporting the body of the strip 111 are fixed to the rear roller shafts of the second bending roller 521 and the third bending roller 531, respectively. It is. In addition, the upper and lower flange portions 112 and 113 having an angle of 90 ° are bent on the front roller shafts of the sixth bending roller 560 and the seventh bending roller 570, and the body portion of the strip 111 is in the width direction. Three second auxiliary rollers 565 are fixed to each other to prevent bending.

8A and 8B are enlarged plan and side views, respectively, of a flange bending machine 600 for bending a strip formed through a flange bending machine to form a flange portion as described above, into a flange-shaped cylindrical unit having a predetermined radius. The flange bending machine 600 is a square plate-shaped steel structure 601 which is erected perpendicularly to the upper surface 102 in the width direction of the lower structure 100, and is pressurized to be rotatably coupled to the upper and lower plates of the steel structure 601. The roller 620, the driving roller 630, the first bending roller 640, and the second bending roller 650 may be formed.

In addition, a pair of second actuators 610 and 611 which receive hydraulic pressure from the hydraulic installation is fixed to the upper and lower rear surfaces of the steel structure 601 to move the pressure roller 620 toward the driving roller 630. have. The ends of the piston shaft 612 of each of the second actuators 610 and 611 are engaged with the support parts 613 rotatably coupled to both ends of the pressure roller 620 to drive the pressure roller 620. 630). In particular, the pressure roller 620 and the driving roller 630, which is a rotary treatment, have a relatively large diameter and, although not shown, a fourth chain / gear connected to a second large electric motor installed inside the substructure 100. It is coupled to receive the rotational torque force by the connecting portion 690 (see FIG. 2). In addition, the fourth chain / gear connecting portion connected to the second large electric motor is configured to transmit rotational torque in the same way to the first bending roller 640 and the second bending roller 650.

In addition, through slits 631 and 632 are formed at upper and lower portions of the driving roller 630 in the circumferential direction, respectively. In addition, the first and second bending rollers 640 and 650 are disposed on the left and right sides of the driving roller 630, and the upper parts of the first and second bending rollers 640 and 650 are disposed. First and second bending slits 641 and second bending slits 651 and 652 are formed at positions corresponding to the through slits 631 and 632, respectively.

Here, the first bending slits 641 of the first bending roller 640 and the slits 631, 632 of the driving roller 630 are formed on the upper portion of the strip 111 having a 'c' cross section, which comes in during the bending operation. It is induced to bend while maintaining the lower flange portion (112, 113). At this time, the strip 111 ′ passes through the gap between the driving roller 630 and the pressure roller 620, and comes in contact with the second bending roller 650 disposed in the direction in which the strip 111 ′ is bent, and has a predetermined circumferential ratio. To bend. At this time, the second bending slits 651 and 652 of the second bending roller 650 accommodate the upper and lower flange portions 112 and 113 of the strip 111 'to maintain a bent shape without twisting.

In addition, the first bending roller 640 may include a pair of roller position adjusting levers 643 and a ball screw feed mechanism (not shown) to adjust the contact gap with the strip 111 ′. In the same principle, the second bending roller 650 also includes a pair of roller position adjusting levers 653 and 654 and a ball screw feed mechanism, and can control the pressing force applied to the strip 111 '.

In addition, a bending goniometer 655 produced by a number of experiments is attached to the upper and lower portions of the steel structure 601 supporting the second bending roller 650. The bending goniometer 655 represents a proportional relationship between the displacement dimension of the roller and the size of the circumference.

That is, when the operator rotates the roller position adjusting levers 653 and 654 of the second bending roller 650 at the same time while looking at the bending angle meter 655, the position of the second bending roller 650 moves ( j), thus allowing the strip 111 " to be bent to have a larger or smaller circumferential ratio.

In addition, a hinge shaft guide roller 720 is hinged to the flange bending machine 600 at the same speed as the strip 111 " that is bent out and hinged in a finite fan shape. The shaft guide roller 720 is a support cantilever that is rotatable about a hinged fixed axis, and a rotatable roller 725 is coupled to an upper end thereof. The outer end and the lower structure 100 of the hinge shaft guide roller 720 are coupled to each other. The connecting chains 726 are engaged so that they only hinge at finite angles.

Hereinafter, a method of manufacturing a flanged cylindrical unit of a storage tank as described above will be described.

As shown in Fig. 9, the operator manipulates a hoist gear for lifting and unloading by a chain, and mounts the strip coil to the strip feeder of the flange-type cylindrical unit manufacturing apparatus of the storage tank of the present invention, When the power switch is turned on (ON), the power lamp is lit and the system is ready for operation (S10).

The operator then turns on the auto run / stop switch for manual operation, and on the auto / manual select switch. And when the operator operates the deformation straightener roller forward / reverse switch, the strip feeder and deformation straightening machine rotate at a slow speed, for example, a rotational speed of 0.1 m / s. Thus, the strip slowly exits the strip feeder and moves towards the deformation corrector. At this time, the operator while holding the end of the strip by hand to move together, induces the end of the strip to enter between the calibration rollers of the deformation corrector (S20).

The strips introduced between the straightening rollers thus spread out smoothly and continuously with the straightening rollers of the deformation straightener (S30).

The strip is also continually advanced by the calibration rollers and is moved towards the strip cutter, where the wheel length meter installed at the entrance of the strip cutter is operated from the point of contact with the strip to measure the length of the continuously moving strip. do. On the other hand, the strip is further advanced by the orthodontic rollers and penetrates the space between the working blade and the fixed blade of the strip cutter and enters the flange bending machine. The flange bending machine gradually bends both ends from the front of the strip to continuously form the upper and lower flange portions on the strip (S40).

At this time, when the distance value preset by the wheel-type length measuring device and the distance value measured directly on the strip coincide, a signal of the match is sent to the control panel, and the control panel stops the strip feeder, the deformation corrector and the flange bending machine. In this case, the operator turns on the first actuator hydraulic ON / OFF switch of the strip cutter and presses the strip cutter up / down switch to operate the strip cutter, thus cutting the strip (S50).

When the operator operates the flange bending machine roller forward / reverse switch of the control panel and the second actuator hydraulic on / off switch of the flange bending machine, the flange bending machine is operated to form the upper and lower flange parts on the strip again. To the flange bending machine. The bending rollers of the flange bending machine bend the entire strip while accommodating the upper and lower flange portions of the 'c' cross-section strip into the bending slits, so that the strip body portion and the upper and lower flange portions have a predetermined circumference in the longitudinal direction of the strip without distortion. It is bent (S60).

The 'c' cross-section strip bent together with the flange portion to form a large cylindrical structure is a flange-shaped cylindrical unit of stainless steel (120: see FIG. 10). The flanged cylindrical unit 120 is a large cylindrical structure having a diameter of 5m to 20m, and is formed by integrally forming the upper and lower flange portions 112 and 113 with minimum torsional deformation due to their own weight in a vertical state. The equipment is moved to the sheet metal workshop by the equipment (S70), and then the finishing sheet metal work is performed (S80).

In addition, when the operator turns on the automatic operation / automatic stop switch for automatic operation and the automatic selection switch on the automatic / manual selection switch, the strip coils are transferred in the order described above and manufactured step by step. Is omitted.

As shown in FIG. 10, the flanged cylindrical unit 120 is made of an integral strip 111 made of stainless steel in order to increase mass production, structural rigidity, assembly, and weldability, and then bent in both directions. The upper and lower flange portions 112 and 113 bent continuously in this state.

In the flanged cylindrical unit 120, the cutting parts 114a to 114d at both ends are cut by sheet metal scissors and the like, and then bent by a bending machine such as a folding / holding machine. Both ends 116a and 116b are bent outward along the curves 115a and 115b, thereby completing the assembly of the cylindrical storage tank.

Thereafter, the completed flanged cylindrical units 120 are stacked in multiple stages having a predetermined height, and a circumferential weld line in which the bent portions of the upper and lower flange portions 112 and 113 border each other is formed inside the cylindrical cylinder unit. Welded together, and then the top and bottom covers (not shown) are welded to form an industrial cylindrical storage tank.

Here, the welding between the bent portions where the upper and lower flange portions 112 and 113 border each other is stronger welding than butt welding or edge welding because the bending stress is applied and provides a relatively large welding area. Provide power.

As described above, the apparatus for manufacturing a flange-type cylindrical unit of the storage tank according to the present invention has the advantage of being able to manufacture the flange-type cylindrical unit integrally while continuously transporting the strip vertically from the strip coil, thereby enabling mass production.

In addition, since the flange-type cylindrical unit manufacturing apparatus of the storage tank according to the present invention is arranged vertically arranged in a row in a vertical arrangement of the devices performing the functions of each step, to produce a flange-shaped cylindrical unit in a vertical state, accordingly Due to the torsional deformation can be minimized, there is an advantage that can produce a high quality product.

In addition, the apparatus for manufacturing a flanged cylindrical unit of the storage tank according to the present invention has an integral cylindrical structure without a seam in the circumferential direction, and thus has an advantage of manufacturing a flanged cylindrical unit having excellent sealing properties.

In addition, the flange-type cylindrical unit manufacturing apparatus of the storage tank according to the present invention can be controlled by a control panel to minimize the number of workers, and by performing a series of operations sequentially, it is possible to manufacture a flange-shaped cylindrical unit very efficiently. There is an advantage.

In addition, since the flanged cylindrical unit manufactured by the present invention is formed integrally with the bent upper flange portion and the lower flange, it has a relatively large structural rigidity compared to the cylindrical unit without the flange portion, a relatively stainless steel material It is very economical to use less.

In addition, the flange-shaped cylindrical unit manufactured by the present invention is made of ferritic stainless steel (product name: STS444) which has improved corrosion resistance and weld toughness, and is very suitable for a storage tank such as a large water tank, and can be used non-permanently. Do.

In addition, the flange-shaped cylindrical unit manufactured by the present invention, when manufacturing the cylindrical storage tank, by providing a relatively large welding area to the bent portion of the flange portion, it is possible to dramatically increase the structural rigidity of the cylindrical storage tank itself There is.

In addition, the flange-shaped cylindrical unit produced by the present invention has an integrated structure, and has the additional advantage that the appearance is beautiful with minimal welding lines.

In addition, the apparatus for manufacturing a flanged cylindrical unit of the storage tank according to the present invention by manufacturing a flanged cylindrical unit that can position the heat insulating material used in the production of the storage tank for the storage tank between the bent upper and lower flanges, There is an additional advantage that makes the manufacturing process of the reservoir tanks simpler.

In addition, preferred embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art will be able to make various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the scope of the claims You will have to look.

Claims (12)

In the apparatus for manufacturing a flange-shaped cylindrical unit constituting the storage tank of the cylindrical structure, In order to transfer the strip 111 from the strip coil 110 which is the material of the cylindrical unit, the turntable 220 is rotated by receiving power from the first large electric motor 830 and the first chain / gear connecting portion 290. Coupled to the strip feeder 200, Vertically straightening rollers are rotatably connected to the second chain / gear connecting portion 390 connected to the first large electric motor 830 to smoothly spread the strip 111 conveyed from the strip feeder 200. Combined deformation corrector 300, In order to cut the strip 111, a strip cutter 400 having a pair of first actuators 410 and 411 and a hydraulic system 460 for operating the working blade 420 toward the fixed blade 421; , Third chain / gear connecting portion connecting vertical bending rollers 510, 511 to 570, 571 to the second large motor 831 to form flange portions 112 and 113 at both ends of the strip 111. A flange bending machine 500 rotatably coupled to 590, The second actuator 610, 611, the pressure roller 620, and the driving roller 630 to bend the bending strip 111 into a cylindrical structure so that the flanges 112 and 113 are not twisted. And a flange bending part 600 coupled to the first and second bending rollers (640, 650). The method of claim 1, To complete the product through the sequential assembly process of the strip 111, The strip feeder 200, the deformation corrector 300, the strip cutter 400, the flange bending machine 500, and the flange bending portion 600 are in line with the upper surface 102 of the substructure 100. Flange-type cylindrical unit manufacturing apparatus of the storage tank, characterized in that arranged. The method of claim 1, The strip feeder 200 supports the strip coil 110 at the lower and side portions to withstand the weight of the strip coil 110 and rotates smoothly. Storage tank, characterized in that the safety bars (240, 250, 260, 270) having the rollers (241, 261) to prevent the abnormal loosening is fixed to the upper surface 102 of the substructure 100 Flanged cylindrical unit manufacturing equipment. The method of claim 1, The calibration rollers 310 and 320 of the deformation corrector 300 form a plurality of stretch grooves 350 in the upper portion and the lower portion of the shaft to prevent the strip 111 vertically conveyed from slipping down. Flange-type cylindrical unit manufacturing apparatus of the storage tank, characterized in that there is. The method of claim 1, Flange-shaped cylindrical unit manufacturing apparatus of the storage tank, characterized in that the inlet portion of the strip cutter 400 is provided with a wheel-type length measuring device (440) for measuring the cutting length of the strip (111). The method of claim 1, The bending rollers 510, 511 to 570, and 571 of the flange bending machine 500 have an inclined angle that is gradually increased to bend flange portions to be formed at both ends of the strip 111 at a multi-step angle. Apparatus for producing a flange-shaped cylindrical unit of the storage tank, characterized in that it has a roller header portion (512, 513 to 572, 573) each formed with a squeezed surface inclined by the inclined surface and the inclined outward axis. The method of claim 6, The bending rollers 510, 511 to 570, and 571 of the flange bending machine 500 are provided with double nuts 514, respectively, to form a clearance h between the roller header parts 512, 513 to 572, and 573. Flange-type cylindrical unit manufacturing apparatus of the storage tank, characterized in that adjustable. The method of claim 1, Upper and lower parts of the drive roller 630 and the first and second bending rollers 640 and 650 of the flange bending machine 600 to bend the flange portions 112 and 113 of the strip 111 without torsion. Flange type cylindrical unit manufacturing apparatus of the storage tank, characterized in that the slit (631, 632, 641, 651, 652) is formed in the circumferential direction. The method of claim 8, Upper and lower portions of the steel structure 601 supporting the second bending roller 650 are attached with a bending goniometer 655 which represents a proportional relationship between the position change dimension of the roller and the size of the circumference. Flange type cylindrical unit manufacturing apparatus of a storage tank, characterized in that the circumferential ratio can be varied. In the method of manufacturing a flange-shaped cylindrical unit constituting the storage tank of the cylindrical structure by using a strip coil wound on the plate strip, Mounting the strip coil to a strip feeder and then turning on the system (S10); Removing the strip from the strip coil and transferring it to a deformation corrector (S20); Straightening the strips with the straightening rollers of the deformation corrector (S30), Bending both ends of the strip with a flange bending machine to form upper and lower flange portions (S40); Cutting the strip measured by the measuring device with a strip cutter (S50), And bending (S60) the strips forming the upper and lower flange portions with a flange bending machine (S60). The method of claim 10, After bending the flange bending machine (S60), after cutting the cutting portions of both ends of the bent strip, further comprising the step of bending both ends to the outside along the bend line Method for manufacturing flanged cylindrical unit of storage tank. delete