JPH1157859A - Pipe body reforming facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct a reformation work efficiently with a simple construction. SOLUTION: The pipe body reform facility is to reform pipes body P unqualified by checks with a curve reformation device 4 and an ellipse reformation device 5. The curve reformation device 4 has plural curve reformation members 79a, 79b which deform the pipe P, being rotatably held by a rotation device 78, by a pressurization gently supporting in a longitudinal direction at plural points in a given distance. A curve volume measuring device 80 is installed at the bottom reforming member 79b to measure the curving volume of the pipe body P. The ellipse reformation device 5 has a couple of the ellipse reformation member 88a, 88b whereby the inlet of the pipe body P, being rotatably supported by the rotation device 78, is gently supported and deformed by a pressurization. A circularity measurement device 89 to measure the inlet circularity of the pipe body P is installed in a housing 3 which supports a pair of the ellipse reformation members 88a, 88b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe straightening apparatus for correcting a bent pipe and an elliptical deformation of an insertion opening of the pipe.

[0002]

2. Description of the Related Art Conventionally, this kind of pipe straightening equipment is shown in FIG.
9 is shown. The inspection apparatus 2 is provided in the middle of a transport path 1 for transporting a pipe P such as an iron pipe, and a two-story building 3 is provided downstream of the inspection apparatus 2 so as to straddle the transport path 1. On the second floor portion 3a of the building 3, a straightening section 7 provided with a bending straightening device 4, an elliptic straightening device 5, and a marking device 6 is provided, and an elevating device 8, 9 are provided.

[0003] In the above configuration, the small-diameter pipe P is easily bent, and the large-diameter pipe P is easily deformed into an elliptical opening. Then, the bending amount of the pipe P conveyed in the direction of the arrow a along the conveyance path 1 and the roundness of the insertion opening of the pipe P are inspected by the inspection device 2, and the non-defective pipe Pa that passes the inspection is The pipe P that has been conveyed as it is along the conveyance path 1 and has failed is sent out to the straightening area 7 by the upstream lifting / lowering device 8 as shown in the direction of the arrow b to be bent straightening device 4.
And by the elliptic correction device 5, the measuring device (not shown) is brought close to the corrected pipe P, and the pipe P
The amount of bending and roundness are measured, and as a result of the measurement, the correction is performed by the above-described correction devices 4 and 5 on the pipe P undercorrected by the necessary number of times. Non-defective mark is marked and the correction tube P
b and the defective pipe Pc are returned to the transport path 1 by the downstream lifting device 9 as shown by the arrow c.

[0004]

In the above-mentioned conventional configuration,
A measuring device for measuring the amount of bending and roundness of the corrected pipe P is provided at a position away from the bending correction device 4 and the elliptical correction device 5, so that the measuring device can approach the corrected pipe P. In addition, a driving device such as an actuator is required, which complicates the structure, increases the manufacturing cost, and has a long cycle time from correction to measurement, resulting in low work efficiency.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a tube straightening facility which has a simple structure and can perform a straightening operation efficiently.

[0006]

In order to achieve the above object, the present invention provides an inspection apparatus and an inspection apparatus for inspecting the amount of bending of a tube and the roundness of an insertion opening of the tube in the middle of a tube conveying path. A straightening device and an elliptical straightening device are provided, and in a tubular body straightening facility configured to straighten a pipe rejected by the inspection of the inspection device by each of the straightening devices, the bending straightening device is rotatable. It has a plurality of bending straightening members for holding and supporting the supported tubular body at a predetermined interval in a longitudinal direction thereof at a plurality of locations and pressurizing and deforming the tubular body. A bend amount measuring device for measuring the amount of bend is provided, and the elliptical correction device has a pair of elliptical correction members for clamping and deforming the insertion opening of a rotatably supported tube, and a pair of the elliptical correction members. A tube is used as a support member to support the elliptical correction member Roundness measuring apparatus is characterized in that provided for the measurement of roundness of the spigot.

In the above configuration, the amount of bending of the pipe conveyed along the conveyance path and the roundness of the insertion opening of the pipe are inspected by the inspection device, and the non-defective pipe that passes the inspection is directly transferred to the conveyance path. The rejected pipe that is conveyed along and bent is corrected by clamping a plurality of locations by a plurality of bending correction members of the bending correction device in a rotatably supported state, and the pipe is measured by a bending measurement device. The rejected tube whose bending of the body is measured and the opening is deformed in an elliptical shape is corrected by clamping the opening by a pair of elliptical correction members of an elliptical correction device in a rotatably supported state. At the same time, the roundness of the insertion opening is measured by the roundness measuring device, and as a result of the measurement by each measuring device, the correction by the above-mentioned respective correcting devices is performed on the undercorrected pipe body a required number of times.

In this case, the bending amount measuring device is provided on an appropriate one of the plurality of bending correcting members, and the roundness measuring device is provided on the supporting member supporting the pair of elliptical correcting members. In addition, the manufacturing cost can be reduced, the cycle time from correction to measurement is shortened, and the correction operation can be performed efficiently.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a pipe straightening apparatus according to an embodiment of the present invention. The pipe straightening equipment is provided downstream of an inspection device 2 provided in the middle of a transfer path 1 for transferring a pipe P. A three-story building 3 is provided so as to straddle, and a straightening area 7 including a bending straightening device 4 and an elliptic straightening device 5 is provided in the second floor portion 3a of the building 3, and inside the straightening zone 7. The first transport means 11, the axial movement device 12, the second transport means 1
3, a third conveying means 14 and a centering device 15 are provided,
A fourth transport means 16 is provided below the straightening devices 4 and 5.

A collection area 17 for collecting uncorrectable defective pipes Pc is provided on the third floor 3b of the building 3.
Delivery device 1 to front and rear entrances 17a of collection area 17
8 are provided, and lifting devices 8 and 9 are provided on the upstream side and the downstream side of the building 3.

As shown in FIGS. 3 to 5, the inspection device 2 includes a pair of left and right rotation devices 2a that rotatably support the pipe P horizontally, and a transport path 1 above the rotation devices 2a.
A plurality of (in this embodiment, three) bending amount inspection units 2b arranged at predetermined intervals along the transverse direction, and a roundness inspection unit 2c arranged on the side of the rotating device 2a. ing.

As shown in FIGS. 3 and 4, each of the rotating devices 2a is disposed on a guide rail 20 provided along the transverse direction of the transport path 1 and is horizontally moved by a cylinder device 21 by a carriage 22. And a pair of front and rear support rollers 23 rotatably provided on the carriage 22. A drive motor 24 for rotating the support rollers 23 is provided on one of the rotating devices 2a.

As shown in FIG. 3 and FIG. 4, of the respective bending amount inspection units 2b, the center bending amount inspection unit 2b is provided.
Has an elevating frame 28 that is raised and lowered by an elevating drive device 27 provided on a base 26 on the base frame 25, and a bending amount inspection unit 2 b on both the left and right sides thereof moves in the transverse direction of the transport path 1 on the A lift frame 28 which is arranged on a guide rail 29 provided along and is horizontally moved by a cylinder device 30 and which is lifted and lowered by a lift drive device 27 provided on a carriage 31 is projected onto the lower end of each lift frame 28. A light-shielding laser sensor 33 composed of a light part 33a and a light receiving part 33b is provided. A tube detector 34 composed of a proximity switch is provided at the center of each lifting frame 28, and corresponds to the tube detector 34. A detection member 36 is provided on an elevating rod 35 with a roller follower 35a which is provided on each elevating frame 28 so as to be able to ascend and descend, and a control unit 37 (see FIG. 6) including a microcomputer for controlling these members is provided. .

The operation of the control unit 37 for inspecting the amount of bending of the pipe P in the above configuration will be described. The position of each rotating device 2a and the amount of bending inspection unit 2b on both the left and right sides according to the entire length of the pipe P will be described. Is adjusted (see the phantom line in FIG. 3), in a state in which the pipe P is transferred from the transport path 1 onto both the rotation devices 2a, the lifting drive device 27 of each bending amount inspection unit 2b is driven to drive the lifting frame 28 Is lowered. As a result, as shown in FIG. 6, the roller follower 35a comes into contact with the pipe P, the elevating rod 35 is pulled up, and the detected member 36 is connected to the pipe detector 3
4, the drive of the elevation drive device 27 is stopped based on the detection signal of the tube detector 36, and then the support roller 23 is driven to rotate by the drive motor 24 to rotate the tube P, A plurality of light beams R are projected in parallel at predetermined intervals from the light projecting portion 33a of the light shielding type laser sensor 33 to the light receiving portion 33b, and the number of the plurality of projected light beams R blocked by the outer peripheral surface of the tube P , The amount of bending of the pipe P is detected.

As shown in FIGS. 3 and 5, the roundness inspection section 2 c has a pair of upper and lower light-shielding laser sensors 33, and the lower light-shielding laser sensor 33 is controlled by a cylinder device 39 to form a tube. The light-shielding laser sensor 33 on the upper side is fixed to the lower end of the moving frame 40 moved in the axial direction of P, and is moved up and down by a cylinder device 41 provided on the moving frame 40. A control unit 37 (see FIG. 7) including a microcomputer for controlling is provided.

In the above configuration, the operation of the control unit 37 for inspecting the roundness of the pipe P will be described. The cylinder unit 39 is driven to move the moving frame 40 to the pipe P on the rotating device 2a.
, The lower light-shielding laser sensor 33 is opposed to the lower surface of the insertion opening of the tube P, and the cylinder device 41
To make the upper light-shielding laser sensor 33 face the upper surface of the insertion opening of the tube P (see FIG. 7). Then, the support roller 23 is driven to rotate by the drive motor 24 to rotate the tube P. A plurality of light rays R are projected in parallel from the light projecting part 33a of the light-shielding laser sensor 33 toward the light receiving part 33b at a predetermined interval, and the plurality of projected light rays R are projected by the outer peripheral surface of the opening of the tube P. The roundness of the tube P is detected from the number of light-shielded tubes.

As a result of the above inspection, the non-defective pipe Pa that has passed is conveyed along the conveyance path 1 as it is. In this case, since the light-shielding laser sensor 33 is used as the inspection device 2, the amount of bending of the tube P and the true circle of the opening of the tube P are independent of the properties and color of the outer peripheral surface of the tube P. The degree can be inspected accurately.

As shown in FIGS. 1 and 2, the lifting devices 8 and 9 are vertically moved via a chain driving mechanism 44 on a pair of left and right machine frames 43 erected with the conveyance path 1 interposed therebetween. It consists of a pair of lifters 45, and both ends of the tube P are placed on both lifters 45.

In the above construction, among the pipes P rejected by the above inspection, those that can be corrected are lifted up to the correction area 7 by the upstream lifting device 8, and the uncorrectable defective pipes Pc are collected in the collection area 17. The correction pipe Pb corrected in the correction area 7 is lowered to the transport path 1 by the downstream lifting device 9, and the defective pipe Pc that could not be corrected in the correction area 7 is lifted to the collection area 17. .

As shown in FIG. 2, the first transport means 11 is mounted on a guide rail 47 and is provided with a cylinder device 48.
Has a moving frame 49 that is moved in the front-rear direction, and a pair of support tables 50 are provided on both side surfaces of the moving frame 49;
As shown by a virtual line in FIG. 2, the moving frame 49 is moved forward,
The pipe P lifted by the upstream lifting device 8 is moved to
After receiving at 0, the moving frame 49 is retracted (see the solid line in FIG. 2), and the pipes P on both support tables 50 are drawn into the stock space 10 of the correction area 7.

As shown in FIG. 2, the axial direction moving device 12 has a pair of left and right support rollers 52 disposed on both sides of the first transport means 11 and capable of driving up and down. A drive device 53 for rotating the roller 52 forward and reverse is provided. After the pipe P drawn into the stock space 10 by the first transport means 11 is received by the two support rollers 52, one of the support rollers 52 is rotated forward and reverse. As a result, as shown in FIG. 8, the pipes P on both support rollers 52 are moved along the axial direction. As a result, FIG.
As shown in (1), the receiving side flanges P1 of the plurality of pipes P stocked in the stock space 10 are displaced from each other, the interval h between the pipes P is narrowed, and the pipes P are stocked in the stock space 10. The number of pipes P is increased as compared with the conventional case, and the stock space 10 can be effectively used.

As shown in FIG. 2, the second transport means 13 includes a pair of left and right support rails 55 arranged on both sides of the axial movement device 12 along the front-rear direction. It has a chain 57 wound between sprocket wheels 56 provided at both front and rear ends, and a driving device 58 for rotating and driving one sprocket wheel 56. Both support rollers 52 of the axial movement device 12 are provided. After transferring the pipe body P onto both support rails 55 from the
7, the pipe P is transported to the bending correction device 4 and the elliptic correction device 5.

As shown in FIG. 2, the third transport means 14 is supported by guide rails 60 provided on the inner surface of each support rail 55, and is moved in a front-rear direction by a cylinder device 61. Frame 62, and each moving frame 6
2 is provided with a pair of support bases 63 which can be moved up and down. After raising the support bases 63 of the respective moving frames 62 to lift the pipes P located at the rear ends of both the support rails 55, the respective moving frames 62 (see the imaginary line in FIG. 2),
By lowering the second support 63, it is mounted on a pair of left and right support rollers 64 that can be driven up and down by a fourth transport unit 16 (described later).

The centering device 15 is, as shown in FIGS. 2 and 9, a front cylinder device 68 movably mounted on a guide rail 67 provided on a base 66 beside the support roller 64. And a rear cylinder device 69 for moving the front cylinder device 68 along the guide rail 67.
And a centering reference plate 70 is provided at the tip of the piston rod of the pre-stage cylinder device 68.

In the above configuration, the pipe P is placed on the pair of left and right support rollers 64 and one of the support rollers 6
4 is driven by the driving device 71 to move the pipe P in the left-right direction so that the insertion end face of the pipe P is brought into contact with the centering reference plate 70 positioned by the expansion and contraction drive of the cylinder devices 68 and 69. The tube P can be centered simply by contacting the tube.

As shown in FIGS. 2 and 9, the fourth transport means 16 has a movable frame 75 mounted on a guide rail 73 and moved in the front-rear direction by a cylinder device 74. A pair of left and right support rollers 64 are provided at the rear ends of both side surfaces of the pair 75, and a pair of left and right support bases 76 that can be driven up and down are provided at the front ends of the both side surfaces.
As shown by the imaginary line in FIG. 2, by moving back the moving frame 75, the pipe P centered by the centering device 15 is transported to the bending correction device 4 and the elliptic correction device 5 by both support rollers 64, The correction pipe Pb and the uncorrectable defective pipe Pc corrected by the bending correction device 4 and the elliptical correction device 5 are transported to the downstream lifting device 9.

The bending straightening device 4 is shown in FIGS.
As shown in the figure, the upper two bending correcting members 79a which press and deform the tube P supported rotatably by the pair of left and right rotating devices 78 at a plurality of locations at predetermined intervals in the longitudinal direction thereof and It has three lower bending correction members 79b, and the lower three bending correction members 79b are provided with a bending amount measuring device 80 for measuring the bending amount of the pipe P.

Each of the rotating devices 78 is shown in FIGS.
, A pair of front and rear support rollers 78 rotatably provided on a support base 78a fixed to the second floor portion 3a of the building 3 as shown in FIG.
b, and one of the rotating devices 78 is provided with a drive motor 81 for rotationally driving the support roller 78b.

The two upper straightening members 79a are:
A pivot shaft 83 is attached to a bearing 82 fixed to the third floor portion 3 b of the building 3.
And is oscillated by a cylinder device 84. Also, the lower three bending correction members 79b
Is a ram cylinder 85 fixed to the second floor portion 3a of the building 3.
Is fixed to the piston rod. As shown in FIG. 14, the bending amount measuring device 80 includes a ram cylinder 8 via a bracket 86, similarly to the bending amount inspection unit 2b.
The light-shielding type laser sensor 33 includes a light projecting part 33a and a light receiving part 33b fixed to the piston rod 5 and is controlled by the control part 37.

The operation for correcting the bending of the tube P in the above configuration will be described. The driving motor 81 rotates the support roller 78b to rotate the tube P, and the light shielding type laser sensor 33 emits light. A plurality of light beams R are projected from the portion 33a toward the light receiving portion 33b in parallel at a predetermined interval (see FIG. 14), and the number of the projected light beams R is reduced by the number of light beams blocked by the outer peripheral surface of the tube P. The amount of bending of P is measured, and based on the measurement, the pipe body P is rotated by a predetermined angle and positioned, the upper two bending correcting members 79a are suspended by the cylinder device 84, and the lower three Bending straightening member 79b
15, the pipe P is clamped by the upper and lower bend correcting members 79a and 79b to correct the bend of the pipe P as shown in FIG. Next, the ram cylinder 8
By lowering the three lower straightening members 79b by means of 5, the pipe P is supported by the support rollers 78 of the two rotation devices 78.
b, and measures the amount of bending of the tube P in the same procedure as described above. If the result of the measurement indicates that the correction is insufficient, the above operation is repeated to correct the tube P. .

As shown in FIGS. 10, 11 and 13, the elliptical correction device 5 includes a pair of upper and lower members for pressing and deforming by pressing an insertion opening of a pipe P rotatably supported by the rotation device 78. A roundness measuring device 89 for measuring the roundness of the opening of the pipe P is provided in the building 3 supporting the pair of elliptical correction members 88a and 88b. .

The pair of upper and lower elliptical correction members 88a, 88
b is raised and lowered by ram cylinders 90 provided on the second floor portion 3a and the third floor portion 3b of the building 3. Further, the roundness measuring device 89 includes the roundness inspection unit 2c.
Similarly to the above, a pair of upper and lower light-shielding laser sensors 33 are provided, and are controlled by the control unit 37.

The operation for correcting the elliptical deformation of the opening of the tube P in the above configuration will be described. The cylinder device 39 is driven to move the moving frame 40 toward the tube P on the rotating device 78. , The lower light shielding type laser sensor 33 to the pipe P
, And the cylinder device 41 is driven to make the upper light-shielding laser sensor 33 face the upper surface of the insertion opening of the tube P (see FIG. 13), and the driving motor 81 rotates the support roller 78b. When driven, the tube P is rotated, and the light projecting portion 33 of
a, a plurality of light rays R are projected in parallel at a predetermined interval from the light receiving section 33b to the light receiving section 33b. The degree is measured (see FIG. 16), and based on the measurement, the pipe P is rotated by a predetermined angle to determine the position.
With 0, the two elliptical correction members 88a and 88b approach each other to pinch the opening of the tube P (see the phantom line in FIG. 16), and correct the elliptical deformation of the insertion. Next, the ram cylinder 90
After the two elliptical correction members 88a and 88b are separated from each other, the supporting roller 78b is driven to rotate by the drive motor 81 to rotate the tube P, and the tube P is rotated in the same procedure as described above.
Is measured, and as a result of the measurement, if the correction is insufficient, the above operation is further repeated to correct the tubular body P. The roundness may be measured simultaneously with the correction. Thereby, the correction can be efficiently performed in a short time.

In this case, since the bending correction device 4 and the elliptic correction device 5 are gathered at one place, the space occupied by the device can be reduced, and the rotation device 78 is also used. , The production cost can be reduced. Further, the bending amount measuring device 80 is provided on the lower three bending correcting members 79b, and the roundness measuring device 8 is provided.
9 is provided in the building 3 supporting the pair of elliptical correction members 88a and 88b, the configuration is simple, the manufacturing cost can be reduced, the cycle time from correction to measurement is shortened, and the efficiency is improved. Straightening work can be performed.

As shown in FIGS. 1, 17, and 18, the delivery device 18 swings about a pivot shaft 92 by a cylinder device 93 via a swing lever 94 around a third shaft portion 3b of the building 3. It has a substantially triangular swing frame 95 to be driven, a tip end of the swing frame 95 is extended upward to provide a tube receiving portion 95a, and a stopper portion 95b is provided at a rear end surface thereof.

In the above configuration, the uncorrectable defective pipe Pc
Is collected by the lifters 45 of the lifting devices 8 and 9 in the collection area 17.
Is lifted to the entrance 17a of the cylinder device 9
By moving the swing frame 95 downward by 3 (see the phantom line in FIG. 17), the defective tube Pc is received from the lifter 45 by the tube receiving portion 95a, and at the same time, the entrance 17a is closed by the stopper portion 95b. , Collection area 1
The defective pipe Pc in the pipe 7 is prevented from being discharged from the entrance 17a, and subsequently, the swing frame 95 is moved upward by the cylinder device 93 (see the solid line in FIG. 17), so that the defective pipe Pc is received by the pipe receiving section 95a. The pipe Pc is sent out into the collection area 17.

In this case, a tube receiving portion 95a for receiving the defective pipe Pc and sending it into the collection area 17 and a stopper section 95 for opening and closing the entrance 17a of the collection area 17 are provided.
Since b is provided integrally with the swing frame 95, the configuration is simple and the manufacturing cost can be reduced.

The procedure for correcting the pipe P based on the above configuration will be described. As shown in FIGS. 1 and 2, the pipe P transported in the direction of arrow a along the transport path 1 is inspected by the inspection device 2. The non-defective pipe Pa that has passed the inspection is transported along the transport path 1 as it is.

Among the failed pipes P, those which can be corrected are sent out to the stock space 10 of the correction area 7 by the upstream lifting / lowering device 8 and the first conveying means 11 as shown by the arrow b, and Direction moving device 12, second transport means 1
3, placed on the rotating device 78 via the third transport means 14, the centering device 15 and the fourth transport means 16 and corrected by the bending correction device 4 and the elliptical correction device 5, and the corrected state is bent. After being measured by the quantity measuring device 80 and the roundness measuring device 89, it is returned to the transport path 1 via the downstream elevating device 9 as shown by the arrow c.

The defective pipe Pc determined as uncorrectable by the inspection of the inspection device 2 is sent out to the collection area 17 by the upstream lifting / lowering device 8 and the upstream delivery device 18 as shown by the arrow d, and the bending straightening device 4 The defective pipe Pc that could not be corrected by the elliptical correction device 5 is sent out to the collection area 17 by the downstream lifting device 9 and the downstream delivery device 18 as shown by the arrow e, and the defective pipe Pc on the collection area 17 is removed. Is transported to a disposal site by a crane or the like.

[0041]

According to the present invention, the bending amount measuring device is provided on an appropriate one of a plurality of bending correcting members, and the roundness measuring device is provided on a supporting member for supporting a pair of elliptical correcting members. As a result, the structure is simple, the manufacturing cost can be reduced, the cycle time from correction to measurement is shortened, and the correction operation can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a side view of a tube straightening facility according to an embodiment of the present invention.

FIG. 2 is a horizontal sectional view of the same.

FIG. 3 is a front view of the inspection device.

FIG. 4 is a central cross-sectional view of the inspection device.

FIG. 5 is a side view of a roundness inspection unit of the inspection device.

FIG. 6 is a side view of a main part showing a bending inspection state by the inspection device.

FIG. 7 is a side view of a main part showing a roundness inspection state by the inspection apparatus.

FIG. 8 is a plan view of the coaxial direction moving device.

FIG. 9 is a front view of the centering device.

FIG. 10 is a front view of the bending correction device and the elliptical correction device.

FIG. 11 is a plan view of the bending correction device and the elliptical correction device.

FIG. 12 is a cross-sectional view of the bending correction device.

FIG. 13 is a side view of the roundness measuring device.

FIG. 14 is an enlarged cross-sectional view of a main part of the bending correction device.

FIG. 15 is a front view showing a correction state by the bending correction device.

FIG. 16 is an enlarged cross-sectional view of a main part of the elliptical correction device.

FIG. 17 is a side view of the delivery device.

FIG. 18 is a plan view of the delivery device.

FIG. 19 is a schematic side view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyance path 2 Inspection device 2a Rotating device 2b Bending amount inspection unit 2c Roundness inspection unit 3 Building (supporting member) 4 Curve straightening device 5 Elliptical straightening device 7 Straightening area 10 Stock space 12 Axial direction moving device 17 Collection area 17a Entrance to the collection area 18 Delivery device 33 Light-shielded laser sensor 33a Light-shielded laser sensor light-emitting portion 33b Light-shielded laser sensor light-receiving portion 78 Rotating device 79a Bending correction member 79b Bending correction member 80 Bending amount measuring device 88a Elliptical correction member 88b Elliptical correction member 89 Roundness measuring device 95 Rocking frame 95a Pipe receiving section of rocking frame 95b Stopper section of rocking frame P Pipe Pa Good pipe Pb Correcting pipe Pc Defective pipe

Claims (1)

[Claims] An inspection device for inspecting the amount of bending of a tube and the roundness of an insertion opening of the tube, a bending correction device, and an elliptical correction device are provided in the middle of the tube conveyance path. In a tube straightening facility that corrects a pipe that failed the inspection by each of the straightening devices, the bend straightening device places a rotatably supported pipe at a predetermined interval in its longitudinal direction. It has a plurality of bending straightening members that are clamped and deformed by pressing at a plurality of places, and among the plurality of bending straightening members, an appropriate one is provided with a bending amount measuring device for measuring the bending amount of the pipe, and the elliptical shape is provided. The straightening device has a pair of elliptical correction members that sandwich and pressurize and deform the insertion opening of the rotatably supported pipe, and the support member that supports the pair of elliptical correction members has an insertion opening for the pipe. A roundness measuring device for measuring roundness is provided Pipe straightening equipment characterized by the following.