JP4251255B2 - Metal bellows forming method and metal bellows forming apparatus for bulge processing - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In particular, the present invention relates to a metal bellows forming apparatus suitable for efficiently producing a stainless steel flexible pipe having a bellows portion provided on a stainless steel tube.
[0002]
[Prior art]
As shown in FIG. 14 (a), the stainless steel flexible pipe P in which the corrugated bellows part P2 is formed on the element pipe P1 formed as a straight pipe has excellent durability and rigidity, but at the same time, the bellows part P2 Therefore, when used as a water pipe or a gas pipe buried in the ground, it has a displacement absorbability due to vibration or the like.
[0003]
In addition, a bent joint or the like is not required for bent piping, and the flexible pipe P can be bent in a three-dimensional direction via the bellows portion P2 as shown in FIG. In recent years, it has been used as piping for various purposes in various places such as high-rise buildings, apartment houses, general houses and factories. Therefore, there is a demand for a metal bellows forming apparatus that can efficiently manufacture a flexible pipe P in which a corrugated bellows portion P2 is formed on a metal tube.
[0004]
Such a flexible pipe metal bellows forming apparatus forms a pair of mold bodies by a pair of upper and lower divided molds having a semicircular half-divided hole, and the outer periphery of the base pipe P1 is divided into a pair from the radial direction. The bellows part P2 for every mountain is formed by constraining in series by a mold. In addition, a large number of such a set of mold bodies are arranged in a row, and both ends of the raw pipe P1 are sealed with a fixing end cap, a moving end cap, and the like, and then a bulge-processing aqueous solution is poured into the raw pipe P1. It flows in and compresses the raw pipe P1 from the moving end cap side to the fixing end cap side while increasing the hydraulic pressure.
[0005]
At the same time, each mold body is also moved in the axial direction of the tube body along with the compression of the element tube P1, and the outer periphery of the element tube P1 is placed in a wavy gap (see FIG. 9) formed by the mold bodies joined together. The bellows part P2 is formed on the outer periphery by swelling.
[0006]
[Problems to be solved by the invention]
By the way, in the conventional metal bellows forming apparatus for bulge processing as described above, the split mold constituting the mold body repeats the compression movement of the mold body and the return operation to the origin position, so that the degree of wear is severe. The problem of mass productivity is pointed out.
[0007]
In addition, it is difficult to bulge and handle each long stainless steel pipe to make a flexible pipe made of stainless steel, and to produce a finished product that does not leak liquid or gas in the pipe with high yield. Have a lot of trouble.
[0008]
Therefore, there is a need for a metal bellows molding apparatus that can efficiently produce a flexible pipe made of stainless steel having a corrugated bellows portion that does not require a bent joint or the like even in the case of bent piping as described above, and whose demand is increasing. It has been.
[0009]
The present invention has been made based on such circumstances, and a plurality of bellows tubes can be obtained simultaneously during one cycle of bulge processing, and a stainless flexible pipe as a finished product without defects. An object of the present invention is to provide a metal bellows forming apparatus capable of manufacturing a metal bellows with high productivity.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a metal bellows device that picks up hollow raw tubes and aligns them in order, and forms a flexible pipe by bulging to form a molded flexible pipe. A metal bellows device for bulge processing that performs leak inspection and sorts and stores defective products and finished products, and is used for storage from a number of hollow hollow tubes stored in storage buckets. A pipe supply device that sequentially picks up the pipes one by one by the inclined surface of the bottom of the bucket and the vibration generator, and a pipe that has been picked up from the pipe supply device is disposed between the pair of raw pipe mounts and between them. A pipe alignment feeding device that receives the pipe on a pipe arrangement mechanism comprising a horizontal pipe feed base and rolls the received raw pipe to make a horizontal feed and align it at a predetermined position; and The aligned hollow shell by type aligning feeder is moved to sandwich while hanging to base pipe stand of bulging feed region First A pipe moving device, a pipe moving device that feeds the raw pipe placed on the base of the base pipe in the bulge processing feed area to the bulge processing apparatus from the tip side, and The raw pipe is synchronized with the movement of the pipe moving device. Insert a bulge core bar from the rear end side A mandrel feeder; The raw pipe fed from the pipe moving device restrains the upper and lower divided mold main bodies from the radial direction of the main pipe, and compresses and moves the multiple rows of main mold bodies in the axial direction of the pipe body. Bulge forming device that bulges a flexible pipe having a bellows part while being pushed out from the bulge processing device With bellows Align flexible pipes and align flexible pipes Second A bulge processing post-processing device that can be suspended by a pipe chuck of a raw pipe moving device, and the bulge processing post-processing device Second Flexible pipe that has been chucked and moved into the water tank The A leak inspection device for detecting leakage by submerging the water tank and sealing both ends thereof, and sending air into the flexible pipe, and after the inspection of the leak inspection device By the second tube moving device Move , release Made Flexible pipe But Rolls onto a pipe sorting bucket on an inclined surface You Table and flexible pipe rolling the above table The Openable open / close plate provided on top of defective product storage box Is closed and the above defective storage box opens. In case of condition Above defect Falling into the product storage box Let , Its opening and closing plate Open and the above defective box is closed. A pipe sorting bucket is provided that passes through a finished product storage box in a state and sorts and stores the finished product and defective flexible pipes.
[0011]
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory plan view showing a schematic configuration of a metal bellows forming apparatus according to the present invention, and FIG. 2 is an explanatory plan view showing schematic configurations of a pipe alignment feeding device and a core metal feeding device. Hereinafter, the operation of the apparatus will be described together with its configuration.
[0013]
As shown in FIG. 1, this metal bellows forming apparatus includes a pipe feeding device 1, a pipe alignment feeding device 2, a core metal feeding device 3, a bulge processing device 4, a bulge processing post-processing device 5, a leak inspection device 6, and a pipe selection. The bucket 7, the control disk 8, the molding pressure generator 9, the hydraulic device 10, the safety monitoring device 11, etc.
[0014]
The pipe supply device 1 stores a large number of raw pipes P1 which are flexible pipes P made of stainless steel along the pipe alignment feed device 2, and sequentially puts the raw pipes P1 into the pipe alignment feed device 2 one by one. It will be pulled up and sent. Specifically, as shown in FIG. 3, the pipe storage bucket 100 has an inclined surface such that the bottom 100 a gradually descends in the direction of the pipe alignment feeding device 2, and the bottom 100 a and the floor surface A vibration generating device 101 is attached between F. A raw pipe pulling mechanism 102 is provided on the pipe storage feeder 2 side of the pipe storage bucket 100.
[0015]
The tube pulling mechanism 102 is a mechanism in which a pair of upper and lower drive gears 103 and 103 and endless chains 104 and 104 wound around the drive gears 103 and 103 are arranged in a pair of left and right. Between the endless chains 104, 104, a raw tube placing plate 105 having an L-shaped cross section is provided in a horizontal shape with an appropriate interval. The raw tube mounting plate 105 has an L-shaped rising portion 105a fixed to the endless chains 104 and 104, and a horizontal portion 105b serving as a raw tube mounting portion for picking up the raw tube P1.
[0016]
Therefore, the raw pipe placing plate 105 is formed by the pipe alignment feeding device by the inclined surface of the bottom 100a of the pipe storage bucket 100 and the vibration generating device 101. 2 Pick up the pipes P1 that are facing downwards one by one. In addition, although not shown in the figure, a concave portion through which the raw tube mounting plate 105 can pass is formed in the portion of the bottom 100a through which the raw tube mounting plate 105 passes.
[0017]
The pipe aligning / feeding device 2 performs processing for aligning the raw pipes P1 picked up from the pipe supply device 1 and feeding them to the bulge processing device 4. A first pipe arrangement mechanism is disposed on the table surface in the vicinity of the pipe supply device 1 in the pipe alignment feed device 2.
[0018]
As shown in FIG. 2, the first pipe arrangement mechanism forms a pair of raw tube mounts 200, 200 each having a U groove 200a into which the raw tube P1 is fitted, and both ends of the raw tube P1. Punches 201 and 201, and pipe horizontal feed tables 202 and 202 disposed between the raw tube mounts 200 and 200, respectively.
[0019]
Therefore, as can be seen from FIGS. 2 and 3, the raw pipe P1 fed from the pipe supply device 1 starts with the U groove 200a in the raw pipe mounts 200 and 200 of the first pipe arrangement mechanism. , 200a to be arranged. As shown in FIG. 5, the pipe lateral feed bases 202 and 202 are provided with a pipe mounting plate 202 a connected to a standing plate 202 b with respect to a table surface so as to be movable up and down via a support bar 202 c. When the pipes P1 are arranged, they are moved downward with respect to the table surface (solid line in FIG. 5).
[0020]
Then, the punches 201 are advanced in the direction of both ends of the raw tube P1, and both ends of the raw tube P1 are formed to correct the deformation at both ends. After that, when the punches 201 and 201 are moved away from both ends of the raw pipe P1 and returned to the original positions, the pipe lateral feed bases 202 and 202 are moved upward with respect to the table surface, as indicated by the dotted lines in FIG. The raw pipe P1 is lifted from the U grooves 200a and 200a of the raw pipe mounts 200 and 200.
[0021]
Since the pipe mounting plate 202a of the pipe lateral feed table 202 is inclined, when the raw pipe P1 is lifted up to lift the raw pipe P1, the lifted raw pipe P1 can be rolled and laterally fed (see FIG. (See dotted line 5). The rawly fed raw pipe P1 is moved to the second raw pipe placing base 200 installed in the second pipe arranging mechanism, and is inserted into the U grooves 200a, 200a, 200a (FIG. 2). reference).
[0022]
However, the raw pipe P1 moved to the raw pipe placing base 200 in the second pipe arranging mechanism is initially inserted into the first U groove 200a, but the first pipe lateral feed base 202 is inserted. , 202 is moved to the central U-grooves 200a, 200a, and then the second pipe transverse feeds 202, 202 are moved from the central U-grooves 200a, 200a to the third right side in the figure. It moves to U-groove 200a, 200a. In this way, the three pipes P1, P1, P1 are arranged at equal intervals in the second pipe arrangement mechanism.
[0023]
203 is a pipe end pressing device, and this pipe end pressing device 203 presses the end portions of the three elementary pipes P1, P1, P1 arranged in the second pipe arranging mechanism by a forward movement. Correct uneven edges. The three pipes P1, P1, P1 whose end irregularities are corrected are First It is chucked by the raw tube moving device 205 (see FIG. 3) and moved to the bulge processing feed region as indicated by the dotted line in FIG.
[0024]
First As shown in FIG. 3, the raw tube moving device 205 includes a travel plate 205 a that is movably suspended from the upper surface of the device, and pipe chucks 205 b, 205 b, 205 b that sandwich the raw tube P <b> 1. The three pipes arranged in the second pipe arrangement mechanism are First It is sandwiched between the pipe chucks 205b, 205b, 205b of the raw pipe moving device 205 and moved from the second pipe arrangement mechanism to the bulge processing feed area (see FIG. 2), and the three raw pipes P1, P1, P1 are The vicinity of each end is inserted into the U-grooves 200a, 200a, 200a in the blank tube mount 200 in the bulge processing feed region.
[0025]
In this state, as shown in FIG. 6, the three elementary tubes P1, P1, and P1 are held at the rear end side by the collet chuck 206a of the pipe moving device 206, and at the leading end in the elementary tube P1 from the rear end side. A metal core 301 having a bulge forming part 301a on the side is inserted.
[0026]
The pipe moving device 206 travels along the rail 203 laid on the bulge processing device 4 on the table surface of the pipe aligning and feeding device 2 with the raw pipes P1, P1 and P1 sandwiched therebetween. At this time, the raw tube mounting base 200 on which the both ends of the three raw tubes P1, P1, and P1 are placed obstructs the travel of the pipe moving device 206. Along with the rails 204 laid so as to be orthogonal to each other, the pipes are moved to a position indicated by a dotted line in FIG. Also, First The raw tube moving device 205 is also returned to the region of the second pipe arranging mechanism.
[0027]
Next, the pipe moving device 206 starts traveling toward the bulge processing device 4 with the three elementary tubes P1, P1, and P1 chucked, and the three elementary tubes P1, P1, and P1 are bulged from the tip side. It feeds into the processing device 4. On the other hand, the cored bar feed driving device 300 operates in synchronism with this, and the cored bars 301, 301, 301 are caused to travel in the element pipes P1, P1, P1, and the bulge forming part is formed at the bellows part forming position of the element pipe P1. 301a is stopped (see FIG. 8).
[0028]
As shown in FIG. 7, the mold main body 400 in the bulge processing apparatus 4 includes an upper divided mold 401 and a lower divided mold 402. At the joining edge of the divided mold 401 and the divided mold 402, there are 3 half-divided holes 401a and 402a which are formed as a series of divided holes when they are joined to each other and sandwich the element pipe P1 with a predetermined interval therebetween. A hole has been opened.
[0029]
A pair of left and right split mold guide holes 401c-401c, 402c-402c are formed on the upper side of the split mold 401 and the lower side of the split mold 402, respectively, and guides are inserted through the guide holes 401c, 402c. The split molds 401 and 402 are moved (upright movement) while being supported by the shaft (not shown) so as to be perpendicular to the axial direction of the tube body.
[0030]
On the other hand, flanges 401b-401b and 402b-402b are formed to project from left and right ends of the upper split mold 401 and the lower split mold 402, and the flange 401b in the upper split mold 401 is The flange 402b in the lower split mold 402 is formed as a flange that is slightly longer than the flange 401b.
[0031]
The clamp plate (not shown) is provided with recesses that fit into the flanges 401b-402b, 401b-402b of both split molds 401, 402 that are joined. Are fitted to the flanges 401c and 402c and the flanges 401b and 402b from the left and right sides, and the two divided molds 401 and 402 are integrally attached to form a set of mold bodies 400.
[0032]
Further, a clamp plate rotation hole is formed in the clamp plate, and the clamp plate itself is rotated about a rotation shaft inserted through the rotation hole. Accordingly, the clamp plate can be released from the short flange 401b of the upper split mold 401 while being held in a state of being hooked to the long flange 402b of the lower split mold, and The clamp plate is moved in the left-right direction to be attached to and detached from the mold body 400. For this reason, the degree of wear of the mold body 400 can be remarkably reduced, and attachment to and removal from the mold body 400 is facilitated.
[0033]
The clamp plate has been described as having a configuration in which the upper and lower divided molds 401 and 402 are inserted into the concave portion. However, a concave portion is provided on the upper and lower divided molds 401 and 402 side, and a convex portion provided on the clamp plate side is provided in the concave portion. You may make it insert.
[0034]
The divided molds 401 and 402 of the mold body 400 may be two holes or one hole instead of three holes, but a case with three holes is preferable. The reason for this is that when forming one flexible pipe P, the center split holes 401a-402a of the mold body 400 can be used, and when forming two flexible pipes P, P. The left and right split holes 401a-402a, 401a-402a of the mold body 400 can be used. In this way, it is possible to balance the load applied to the mold body 400 during bulging, and it is not necessary to replace the mold body 400 each time regardless of the number of bulgings of the flexible pipe P. . In consideration of the weight, operability, durability and the like of the mold main body 400, three holes are suitable when the mold main body 400 is formed of a normal material.
[0035]
Further, the upper divided molds 401,... And the lower divided molds 402,... Are connected to each other by connecting pins (not shown) that can be freely moved. Further, both ends of the raw tube P1 are hermetically supported by moving end caps 401-2 and 402-2 and fixing end caps 401-1 and 402-1.
[0036]
As described above, according to the bulge processing apparatus 4, the three half holes 401 a to 402 a and 401 a to 402 a of the pair of divided molds 401 and 402 that constitute a pair of mold main bodies 400 are respectively three. The outer periphery of the raw pipe P1 is constrained in a series in the radial direction, and a large number of the mold bodies 400 thus arranged are arranged in the axial direction of the pipe, and the inside of the bulging portion of each of the raw pipes P1, P1, P1 The bulge forming part 301a of the cored bar 301 is positioned on the top (see FIG. 8).
[0037]
In the metal core 301, the water liquid whose water pressure has been increased by the molding pressure generator 9 flows into the metal core 301 of each element pipe P1 via the water-liquid branching mechanism 900, and the hole 301b of the bulge forming portion 301a is formed. ,... Swell out the bulge processing portion of the raw pipe P1. Then, the moving end caps 401-2 and 402-2 are compressed and moved to the fixing end caps 401-1 and 402-1 side, and are moved to predetermined positions on the outer circumferences of the three elementary pipes P1, P1, and P1 at the peripheral time. A corrugated bellows portion P2 is formed (see FIG. 9). 302 is a ring for sealing.
[0038]
The bulge processing post-processing device 5 aligns the molded flexible pipe P extruded from the bulge processing device 4, and guide grooves 500a, 500a, 500a for receiving the extruded flexible pipe P on the table surface. Are lined up. In addition, it was suspended movably on the top side of the device. Second A tube moving device 501 is arranged (see FIG. 11). Second The raw pipe moving device 501 includes a travel plate 501a and pipe chucks 501b, 501b, and 501b that sandwich the flexible pipes P, P, and P.
[0039]
In addition, reference numeral 503 shown in FIG. 10B denotes a cylinder, and reference numeral 504 denotes an end pushing plate, and when the flexible pipe P is pushed out from the bulge processing apparatus 4, it can respond and pass through the cylinder 503. The ends of the flexible pipes P, P, and P are pressed and aligned by the above operation.
[0040]
Second The flexible pipes P, P, and P chucked by the raw tube moving device 501 are moved to the leakage inspection device 6. As shown in FIG. 11, the leak inspection apparatus 6 is a water tank. Each flexible pipe P, P, P is supported at both ends by a sealing support plate 600 and sealed by a rubber seal member 601. Air is fed into the flexible pipe P from the air feed hose 602 through the rubber seal member 601 (see FIG. 12). Since the flexible pipe P is submerged in the water tank of the leak inspection apparatus 6, if a crack is generated, bubbles are generated and detected.
[0041]
In addition, although illustration is abbreviate | omitted, the flexible pipe P which has produced the crack etc. can be detected by measuring the fall rate of the air sent in the flexible pipe P with a gas amount detection apparatus etc. It can also be known by visually observing bubbles generated in the water tank.
[0042]
Second The raw tube moving device 501 releases the flexible pipe P on the table 502 after the leak inspection. Since the table 502 is inclined to the pipe sorting bucket 7, the released flexible pipe P inevitably rolls toward the pipe sorting bucket 7.
[0043]
The pipe sorting bucket 7 includes a finished product storage box 700 that stores a finished product of the flexible pipe P, and a defective product storage box 701 that stores a defective product. As shown in FIG. 11, the defective product storage box 701 is installed on the apparatus side, and the finished product storage box 700 is disposed outside the defective product storage box 701.
[0044]
A plurality of open / close plates 702 are attached to the upper surface side of the defective product storage box 701 at appropriate intervals. When the open / close plates 702 are in the open state, as shown in FIG. A path to the finished product storage box 700 is created by the opening / closing plate 702 on the upper surface, and the flexible pipe P that has passed through the table 502 is dropped into the finished product storage box 700 without falling into the defective product storage box 701. The
[0045]
When the open / close plate 702 is closed, the open / close plate 702 does not form a passage to the finished product storage box 700 on the upper surface of the defective product storage box 701 as shown in FIG. The flexible pipe P is dropped into the defective storage box 701 that is left open as it is, and the defective flexible pipe P and the finished flexible pipe P can be sorted and stored. it can.
[0046]
Next, the electrical system configuration of the metal bellows processing apparatus according to the present invention will be described with reference to the block diagram of FIG. That is, as an electrical system configuration, a system control unit 800 that controls and controls the operation of each unit, an interface unit 801, a system operation storage unit 802, an emergency detection unit 803, a pipe supply command unit 804, and a pipe alignment feed command unit 805 , A metal core feed command unit 806, a bulge processing command unit 807, a bulge processing post-processing command unit 808, a leak inspection command unit 809, a pipe selection command unit 810, a molding pressure command unit 811, a hydraulic pressure command unit 812, and the like.
[0047]
The interface unit 801 inputs operation base information of each unit to the system control unit 800 from the information input unit 900 in the control disk 8 connected to the apparatus. The information input unit 900 may be any of keyboard operation means having character keys and numeric keys, program software reading means, personal computer terminal means, and the like.
[0048]
The system operation storage unit 802 stores input information from the information input unit 900 and a progress operation of each unit in the apparatus, and enables a sequence control operation of each unit of the apparatus based on a general command of the system control unit 800.
[0049]
When the safety monitoring device 11 detects that an operator or the like has entered the monitoring area, the emergency detection unit 803 outputs an emergency detection signal, and the system control unit 800 causes the entire operation of each part of the device or related parts to be detected. The operation can be stopped.
[0050]
The pipe supply command unit 804 outputs a motor drive signal and outputs an operation signal of the drive gear 300 in the pipe supply device 1, although not shown, an operation start signal or an operation to the drive motor of the drive gear 300. Stop.
[0051]
The pipe alignment feed command unit 805 includes a first pipe row confirmation command unit, a forming command unit, a first pipe lateral feed command unit, a second pipe row confirmation command unit, a second pipe lateral feed command unit, and a pipe end press command. , A pipe movement command means, a collet chuck command means, a pipe movement command means, and the like.
[0052]
The first pipe arrangement confirmation command means outputs an arrangement confirmation signal, and determines whether or not the raw pipe P1 is arranged on the raw pipe mount 200 arranged in the first pipe arrangement mechanism. To detect . The forming command means outputs a punch operation signal, and operates the punch 201 so as to expand both ends of the raw pipe P1 placed on the first pipe arranging mechanism.
[0053]
The first pipe transverse feed command means outputs a vertical movement operation signal, operates the transverse feed base 202 arranged in the first pipe arranging mechanism, and moves the raw pipe P1 to the element of the second pipe arranging mechanism. Move to tube mount 200,
[0054]
The second pipe row setting command stage outputs a second row setting confirmation signal such as a primary placement confirmation signal and a secondary placement confirmation signal to the raw pipe stage 200 in the second pipe row mechanism region. The placement location of the raw pipe P1 that has been moved is detected, and the placement movement is performed. First, when the raw pipe P1 is inserted into the first U-groove 200a, the primary placement confirmation signal is output, and the first pipe lateral feed command means is based on the output of the primary placement confirmation signal. The first lateral feed base 202 is operated to move the raw pipe P1 into the second (center) U groove 200a. Then, when the secondary placement confirmation signal is output, the second pipe transverse feed command means operates the second transverse feed base 202 based on the output of the secondary placement confirmation signal, and the raw pipe P1 is moved to the first place. Move into the third U-groove 200a.
[0055]
In the above case, the processing information of the three flexible pipes P is stored in the system operation storage unit 802. However, in the case of one, the raw pipe P1 is placed in the second (center) U groove 200a. In the case of two tubes, the raw tube P1 is operated to be placed in the first U-groove 200a and the third U-groove 200a.
[0056]
The pipe end press command means outputs an advance / retreat command signal, and corrects the unevenness of the end of the raw pipe P1 by the pipe end press plate 203. The tube moving means outputs a tube moving signal, First The raw pipe moving device 205 is operated to move the raw pipe P1 whose end is aligned at a predetermined position to the bulge processing feed region.
[0057]
The collet chuck command means 811 outputs a raw tube chuck signal and causes the rear end portion of the raw tube P1 moved to the bulge processing feed region to be clamped by the collet chuck 206a. Further, the pipe moving means outputs a pipe moving signal, and feeds the raw pipe P1 in the collet chucked state to the bulge processing apparatus 4 by running the pipe moving apparatus 206.
[0058]
The mandrel feed command unit 806 outputs a mandrel feed signal, and the mandrel feed driving is performed in synchronization with the pipe moving device 206 starting to travel toward the bulge processing device 4 with the base pipe P1 chucked. The apparatus 300 is operated, and the cored bar 301 is caused to travel in the element pipe P1 and the bulge forming part 301a on the tip side is stopped at the bellows part forming position of the element pipe P1.
[0059]
The molding pressure command unit 811 outputs a molding pressure command signal, and causes the water liquid whose pressure has been increased by the molding pressure generator 9 to flow into the metal core 301 via the water-liquid branching mechanism 900, and the bulge processing molding unit 301a. , And the bulge-processed portion of the element tube P1 is bulged. Further, the hydraulic pressure command unit 812 outputs a hydraulic pressure command signal and adds the bulge forming pressure in the bulge processing apparatus 4.
[0060]
The bulge processing command unit 807 outputs a bulge command signal and drives the die body 400 to the raw pipe P1 sent to the bulge processing device 4 to perform bulge processing. The bulge command signal in the bulge processing command unit 807 opens and closes the upper and lower divided molds 401 and 402 by a mold opening / closing signal, and the moving end caps 401-2 and 402-2 are compressed by an advance / retreat signal. And release. Of course, the bulge command signal is synchronized with the core bar feed signal of the core bar feed command unit 806, the molding command signal of the molding pressure command unit 811, the hydraulic command signal of the hydraulic command unit 812, and the like.
[0061]
The bulge processing post-processing command unit 809 outputs a post-processing signal and aligns the flexible pipe P pushed out from the bulge processing device 4 with the guide groove 500a. Further, a pipe end pressing signal is output, and the cylinder 503 and the pipe end pressing plate 504 provided in the bulge processing post-processing device 5 are operated to align the ends of the flexible pipes P. Furthermore, it outputs a tube chuck signal and is suspended from the table surface. Second The raw pipe moving device 501 is operated to hold the flexible pipe P and move it to the leakage inspection device 6. After the leakage inspection is completed, the flexible pipe P is released to the table 502.
[0062]
The leak inspection command unit 809 outputs a pipe sealing signal, and a rubber seal member 601 protruding from the sealing support plate 600 Second Both ends of the flexible pipe P chucked by the raw pipe moving device 501 are sealed and supported in a water tank of the leak inspection device 6, and a rubber seal is provided from an air feed hose 602 communicated with a compressed gas feed device (not shown). Air is sent into the flexible pipe P through the member 601.
[0063]
The pipe selection command unit 810 outputs a pipe selection signal. When the flexible pipe P is determined to be a completed product, the pipe selection command unit 810 outputs a completion signal, with an appropriate interval on the upper surface side of the defective product storage box 701. A plurality of attached opening and closing plates 702 are opened, a passage leading to the finished product storage box 700 is formed on the upper surface side of the defective product storage box 701, and the upper surface of the defective product storage box 701 is passed through and dropped to the finished product storage box 700. Let
[0064]
When the flexible pipe P is determined to be defective, a defect signal is output, the open / close plate 702 is closed, and the upper surface side of the defective product storage box 701 is opened to complete the defective flexible pipe P. Without being sent to the product storage box 700 side, it is dropped into the defective product storage box 701 as it is.
[0065]
Next, the operation of the metal bellows processing apparatus according to the present invention is as follows. 16 and 17 It demonstrates based on the flowchart of these. When the apparatus is turned on and the operation of the apparatus is started, in step 100, the system operation storage unit 802 stores the flexible pipe P in the system operation storage unit 802 such as the number of raw pipes P1 to be formed and the forming interval of the bellows part P2. Whether necessary information is stored is determined.
[0066]
If it is determined in step 100 that information necessary for molding is stored in the system operation storage unit 802, the process proceeds to step 101, where each unit of the apparatus is set in an operation standby state, and further proceeds to step 102, where The supply device 1 is operated to pick up the pipes P1 one by one from the pipe storage sorting bucket 100 and feed them into the pipe alignment feed device 2.
[0067]
In step 103, it is determined whether or not the raw pipes P1 are arranged in the first pipe alignment mechanism in the pipe alignment feed device 2. If it is determined that the raw pipes P1 are arranged, the process proceeds to step 104. Both ends of the elementary pipes P1 arranged in the first pipe alignment mechanism are expanded by the punch 201.
[0068]
In step 105, the pipe transverse feed table 201 is operated and the expanded pipe P1 is laterally fed to the second pipe alignment mechanism, and the raw pipe P1 is aligned on the second pipe alignment mechanism.
[0069]
In Step 106, it is determined whether or not the alignment of the raw pipe P1 is completed on the second pipe alignment mechanism by the operation of the pipe transverse feed table 201. In Step 107, First The raw pipe moving device 205 is operated to sandwich the raw pipe P1 aligned on the second pipe alignment mechanism and move it to the bulge processing feed region.
[0070]
In step 108, the base pipe P1 moved to the bulge processing feed region is sandwiched between the collet chucks 206a of the pipe moving device 206, and the bulge of the core metal 301 from the rear end of the base pipe P1 by the operation of the core metal feed device 3. The machined portion is inserted into the raw pipe P1 and is put into a bulge processing standby state.
[0071]
In Step 109, the pipe moving device 206 is caused to travel on the raw pipe P1 in a state of being collet-chucked and fed to the bulge processing device 4, and the core metal feeding device 3 is also synchronized with the pipe moving device 206. 300 is operated, and the bulge forming part 300a of the cored bar 301 is set to the bellows part forming position of the base tube P1, and the bulge processing is possible.
[0072]
In step 110, the bulge processing device 4 drives the mold body 400 to open and close the upper and lower divided molds 401 and 402 at the location of the base pipe P1 to perform bulge processing. At this time, the forming pressure generating device 9, the water / liquid branching mechanism 900, the hydraulic device 10 and the like are also synchronized so that the water / liquid with the increased water pressure flows into the metal core 301 and the holes 301b of the bulge forming portion 301a,. -Let it flow out and bulge the bulge processing part of the elementary pipe P1.
[0073]
In step 111, it is determined whether or not the bulging processing of the necessary portion for the raw pipe P <b> 1 is finished in the bulging processing device 4. Here, when it is determined that the bulge processing has not been completed, the process returns to step 108, but when it is determined that the bulge process has been completed, the process proceeds to step 112.
[0074]
In step 112, the bulge processing post-processing device 5 aligns the flexible pipes P extruded from the bulge processing device 4, and Second The flexible pipe P is clamped and moved to the leak inspection device 6 by the operation of the raw tube moving device 501, and it is determined whether or not the bulge processing is finished.
[0075]
In step 113, the leakage inspection device 6 is operated. Second Both ends of each flexible pipe P chucked by the raw pipe moving device 501 are submerged in a water tank while hermetically supporting both ends, and air is fed into the flexible pipe P through a compressed gas feeding device, and leakage inspection is performed.
[0076]
In step 114, it is determined whether or not the leakage of the flexible pipe P has been inspected by the gas reduction rate of the compressed gas feeder or by visual observation. If the leakage is detected, the process proceeds to step 115, and no leakage is detected. Then go to step 116.
[0077]
[0078]
In step 115, the pipe sorting bucket 7 is operated, the open / close plate 702 on the upper surface side of the defective product storage box 701 is closed, and the defective product storage box 701 is opened, and the process proceeds to step 117. In step 117, Second The defective flexible pipe P chucked by the raw tube moving device 501 is dropped on the defective product storage box 701 without being released on the table 502 and sent to the finished product storage box 700 side.
[0079]
In step 116, the opening / closing plate 702 on the upper surface side of the defective product storage box 701 is opened, and the upper surface side of the defective product storage box 701 is closed, and the process proceeds to step 119. In step 119, Second The completed flexible pipe P chucked by the blank tube moving device 501 is released on the table 502, released on the defective product storage box 701, passes through the upper surface of the defective product storage box 701, and is dropped. .
[0080]
As described above, according to this embodiment, the pipes are fed one by one from the pipe supply device for storing the pipes to the pipe aligning / feeding apparatus, and the pipes are aligned in the pipe aligning / feeding apparatus and sandwiched so as to be transportable. In addition, a core metal for bulge processing is inserted from the rear end side to the front end side of the raw pipe, and the base pipe in a state where the core metal is inserted from the pipe alignment feeder to the bulge processing apparatus is fed to have a bellows portion. The flexible pipe is bulged, the flexible pipe sent out from the bulge processing device is subjected to leakage inspection to determine whether it is a finished product or defective product, and the finished product and defective product are collected separately. Yes. Further, the pipe aligning / feeding apparatus is configured to align at least three element pipes, and the bulge processing apparatus is configured to be capable of bulging at least three element pipes.
[0081]
Therefore, it is possible to perform sequence control as a series of operations from picking up the raw tube to aligning, bulging, post-processing, leak inspection, defective product sorting, etc., and the flexible pipe P made of stainless steel as a finished product without defects. It can be manufactured with high productivity.
【The invention's effect】
As described above, according to the present invention, when a flexible pipe as a finished product is obtained, a series of operations is performed as an apparatus having an integral structure, and the raw tube is taken out, moved and aligned, and the cored bar. Insertion, bulge processing, post-bulge processing, leakage inspection, sorting of finished and defective products, etc. can be efficiently prepared, so stainless steel flexible pipes can be efficiently manufactured from raw pipes with high mass productivity. can do.
[Brief description of the drawings]
FIG. 1 is an explanatory plan view showing a schematic configuration of a metal bellows forming apparatus according to the present invention.
FIG. 2 is an explanatory plan view showing a schematic configuration of the pipe alignment feeding device and the core metal feeding device in FIG. 1;
3 is a cross-sectional view illustrating the schematic configuration of a pipe supply device and a pipe alignment feed device in FIG.
FIG. 4 is a perspective view showing an example of a raw tube mount.
FIG. 5 is an explanatory diagram showing a relationship between a raw tube placing table and a pipe lateral feed table.
FIG. 6 is an explanatory plan view showing a rear end portion of a raw tube and a cored bar insertion state.
FIG. 7 is an explanatory front view showing a combination of mold bodies.
FIG. 8 is an explanatory sectional view showing a bulge processing state.
FIG. 9 is an explanatory sectional view showing a bellows portion forming state.
10 is an explanatory front view showing the bulge processing post-processing apparatus in FIG. 1; FIG.
11 is an explanatory front view showing a bulge processing post-processing device, a leak inspection device, and a pipe sorting bucket in FIG. 1; FIG.
12 is a plan view for explaining the leakage inspection apparatus in FIG. 1. FIG.
13 is an explanatory cross-sectional view showing a pipe sorting bucket in FIG. 1. FIG.
FIG. 14 is an overview diagram showing a flexible pipe.
FIG. 15 is a block diagram showing an electrical configuration of the metal bellows forming apparatus according to the present invention.
FIG. 16 is a flowchart showing an operation until a bulge processing standby operation of the metal bellows forming apparatus according to the present invention.
FIG. 17 is a flowchart showing an operation of the metal bellows forming apparatus according to the present invention from a bulgeable state.
[Explanation of symbols]
1 Pipe feeder
2 Pipe alignment feeder
3 Core feeder
4 Bulge processing equipment
5 Post-processing equipment for bulge processing
6 Leak inspection device
7 Pipe sorting bucket
8 Control disk
9 Molding pressure generator

Claims (1)

Bulge processing that picks up hollow tubes and aligns them sequentially, forms bulges to form flexible pipes, performs leak inspection on the formed flexible pipes, sorts out defective products, and sorts and stores them. Metal bellows device for
A pipe supply device that sequentially picks up the pipes one by one by the inclined surface of the bottom part of the storage bucket and the vibration generator from a plurality of hollow pipes stored in the storage bucket;
The raw pipe picked up from the pipe supply device is received on a pipe arrangement mechanism composed of a pair of raw pipe mounting bases and a pipe horizontal feed base arranged therebetween, and the received raw pipes are rolled. A pipe aligning and feeding device that is laterally fed and aligned at a predetermined position;
A first pipe moving device for holding the pipe aligned by the pipe aligning and feeding apparatus while suspending the pipe and moving the pipe to a base of the bulge processing feed area;
A pipe moving device that feeds the raw tube placed on the raw tube mount in the bulge processing feed region from the tip side to the bulge processing device;
A metal core feeding device for inserting a metal core for bulge processing from the rear end side of the raw pipe in synchronization with the operation of the pipe moving device ;
The raw pipe sent from the pipe moving device restrains the upper and lower split mold main bodies from the radial direction of the main pipe and compresses and moves the multiple rows of main bodies arranged in the axial direction. A bulge processing device for bulging a flexible pipe having a bellows portion while
A bulge processing post-processing device that aligns the flexible pipe having the bellows portion extruded from the bulge processing device, and enables the flexible pipe to be suspended by the pipe chuck of the second element pipe moving device;
The flexible pipe that has been chucked and moved into the water tank by the second bulge processing post-processing apparatus is submerged in the water tank and sealed at both ends, and air is sent into the flexible pipe to leak. A leak inspection device to detect;
Moved by said second base tube moving device after the inspection of the leak test apparatus, a table freed allowed was flexible pipe you roll toward the pipe sorting bucket on the inclined surface,
The flexible pipe that has rolled the table is closed with the openable opening / closing plate provided on the upper surface of the defective product storage box, and when the defective product storage box is open , it is dropped into the defective product storage box. The opening and closing plate is opened, and when the defective product storage box is in the closed state, it is passed through the finished product storage box, and the pipe sorting bucket for sorting and storing the finished product and the defective flexible pipe,
A metal bellows forming apparatus for bulge processing characterized by comprising:

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