CN211866227U - Clamping and bending integrated mechanism for welding flange pipe for ship before bending and pipe bending machine - Google Patents

Abstract

The utility model discloses a curved integrative mechanism of clamp and bending machine of bending after welding of flange pipe for boats and ships belongs to the machining field. The clamping and bending integrated mechanism comprises a clamping device and a positioning device, wherein the positioning device comprises a transverse moving mechanism and a vertical moving mechanism; the vertical moving mechanism is installed on a moving part of the transverse moving mechanism, and a detection part for detecting the position of the flange installation hole is installed on the moving part of the vertical moving mechanism. The flange mounting hole positioning device can accurately position the position of the flange mounting hole, and time is saved. The bending machine is provided with the clamping and bending integrated mechanism, clamping and position adjustment of a flanged pipe fitting can be achieved, and a bent pipe meeting the use requirement is prepared.

Description

Clamping and bending integrated mechanism for welding flange pipe for ship before bending and pipe bending machine

Technical Field

The utility model belongs to the machining field, more specifically say, relate to a bent integrative mechanism of clamp and bending machine of bending after welding of flange pipe for boats and ships.

Background

Machining refers to a process of changing the external dimensions or properties of a workpiece by a mechanical device, and bending of a pipe belongs to one type of machining. The pipe bending machine is the most common bending device for bending pipes, and when the pipe bending machine is used for bending a pipe fitting, the pipe fitting needs to be clamped tightly by controlling the clamping device, and then the pipe fitting needs to be bent. The machined pipe fitting is often required to be flange-mounted on some equipment in actual mounting work, so that flanges, usually welding, are required to be mounted on the pipe fitting. Because the pipe fitting is the arc structure after bending, it is extremely inconvenient to lead to installing flange at the position of bending, consequently, if there is the bending machine can directly bend the processing to the pipe fitting of flange, must possess higher market value. However, if the pipe fitting is bent after the flange is mounted on the straight pipe, it is necessary to ensure that the relative position between the position of the flange mounting hole and the bending direction of the pipe fitting meets the actual mounting requirement, otherwise, the pipe fitting cannot be mounted on the equipment to be mounted through the flange after being bent.

For example, a pipe bender bends a pipe fitting provided with a flange in the vertical direction, and when the pipe fitting is bent, one mounting hole of the flange is required to be positioned on the vertical central line of the flange (because the mounting holes of the flange are uniformly distributed along the center of the flange, the position of the other mounting holes can be determined by determining the position of one mounting hole, and the vertical central line extends to a straight line which is positioned in the vertical direction and passes through the central point of the flange), so that the flanges at two ends of the bent pipe fitting can be exactly mounted on equipment. However, if the mounting hole of the flange is not located on the vertical center line of the flange, if the flange at the end is to be mounted at the corresponding position of the equipment, the angle of the flange needs to be rotated to make the position of the mounting hole on the flange correspond to the position of the mounting hole at the mounting position, but because the flange is rotated by the angle, the pipe is also rotated by the angle and the pipe is a bent pipe, the position of the flange at the other end cannot necessarily correspond to the position of the mounting position at the other end, so that the bent pipe cannot be mounted on the equipment.

The existing pipe bender does not have an accurate positioning measure when bending the flanged pipe fitting, can only be manually grasped and adjusted, on one hand, the pipe bender wastes time and labor, the working efficiency of the pipe bender is influenced, on the other hand, the error rate of manual adjustment is higher, and the finished pipe can not be installed on equipment.

For example, the Chinese patent application number is: CN201710161817.0, published date: patent literature on 7/14/2017 discloses a clamping mechanism and a pipe bender with the same. The clamping mechanism comprises an installation foundation; the clamping head is movably arranged on the mounting base; the locking assembly is connected with the installation foundation; the driving part is arranged adjacent to the installation foundation and can drive the locking assembly to move, so that the locking assembly is provided with a locking position for locking the chuck and an unlocking position for unlocking the chuck. The driving part is adopted to drive the locking assembly, so that the chuck can be detached from the installation base to achieve the purpose of replacing the chuck. The mode of manually disassembling the chuck for replacement in the prior art is avoided, the time for replacing the chuck is effectively shortened, and the chuck replacement efficiency is improved.

Also, for example, the Chinese patent application No. that the applicant has filed is: CN201811427052.1, published date: patent literature 1 month and 22 days 2019 discloses an elastic clamping device of a numerical control pipe bender, and belongs to the field of numerical control pipe benders. The rotary rod mechanism comprises a rotary rod and a rotary driving mechanism for driving the rotary rod to rotate; the rotary driving mechanism comprises a servo motor, a corner box body and a rear bearing cover; the rear bearing cover is arranged at the rear end of the corner box body, and the rear end of the rotating rod penetrates through the front end of the corner box body and extends into the rear bearing cover; a group of front radial bearings and front axial bearings which are sleeved on the rotating rod are arranged in the corner box body side by side, and a group of rear radial bearings and rear axial bearings which are sleeved on the rotating rod are also arranged in the rear bearing cover side by side; the servo motor is arranged on the corner box body and is in transmission connection with the rotating rod. According to the invention, the rotating support structure of the rotating rod is optimized, so that the coaxial axis and the rotating stability of the rotating rod and the elastic chuck are ensured, and the processing precision of the pipe bender for long time use is ensured.

The technical improvement is made on the device for clamping the pipe fitting by the pipe bender in the two schemes, however, the two schemes cannot solve the problem that the position of the mounting hole of the flange cannot be accurately positioned and adjusted when the flange is mounted on the straight pipe firstly and then the straight pipe is bent, and a bending machine which solves the problem is not provided in the prior art.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

When bending the straight tube to installing flange to current bender, hardly carry out the problem of accurate positioning and regulation to the position of the mounting hole of flange, the utility model provides a curved integrative mechanism of clamp that flange pipe welded earlier for boats and ships is curved afterwards can be when the pipe fitting of centre gripping flanged, and the position of flange mounting hole is adjusted to the accurate positioning, reduces the error that manual regulation produced.

The utility model also provides a bending machine possesses the curved integrative mechanism of clamp that above-mentioned flange pipe welded earlier for boats and ships after bending, can realize the centre gripping of the pipe fitting to the flange and the adjustment of position, prepares out the return bend that accords with operation requirement.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A clamping and bending integrated mechanism for welding and bending a flange pipe for a ship firstly comprises a positioning device, wherein the positioning device comprises a transverse moving mechanism and a vertical moving mechanism; the vertical moving mechanism is installed on a moving part of the transverse moving mechanism, and a detection part for detecting the position of the flange installation hole is installed on the moving part of the vertical moving mechanism.

As a further improvement of the technical solution, the detecting member is a sensor.

As a further improvement of the technical scheme, the detection component is a pin horizontally arranged.

As a further improvement of the technical scheme, the transverse moving mechanism comprises a transverse driving cylinder and a transverse sliding block arranged at the front end of a piston rod of the transverse driving cylinder, and the vertical moving mechanism is fixedly connected with the transverse sliding block.

As a further improvement of the technical scheme, the vertical moving mechanism comprises a vertical driving cylinder and a vertical sliding block which are arranged on a transverse sliding block; the telescopic direction of the piston rod of the vertical driving cylinder is perpendicular to the telescopic direction of the piston rod of the transverse driving cylinder, and the front end of the piston rod of the vertical driving cylinder is fixedly connected with a vertical sliding block; the detection component is installed on the vertical sliding block.

As a further improvement of the technical scheme, a transverse guide rail is arranged on the transverse driving cylinder along the extension direction of a piston rod of the transverse driving cylinder, and a transverse guide block matched with the transverse guide rail is arranged on the transverse sliding block.

As a further improvement of the technical scheme, the vertical driving cylinder is provided with a vertical guide rail along the extension direction of a piston rod of the vertical driving cylinder, and the vertical sliding block is provided with a vertical guide block matched with the vertical guide rail.

As a further improvement of the technical scheme, the device further comprises a clamping device, wherein the clamping device comprises a push sleeve, an elastic chuck arranged at the front end of the push sleeve, a driving mechanism and an angle detection device for detecting the rotation angle of the push sleeve; the positioning device is positioned above the elastic chuck, and when the detection part of the positioning device is positioned at the same height with the center of the elastic chuck, the detection part is positioned on the straight line where the axis of the push sleeve is positioned.

A pipe clamping method adopts the clamping and bending integrated mechanism for welding and bending a flange pipe for a ship, and clamps the flanged pipe, and comprises the following steps:

firstly, mounting a pipe fitting with a flange on a clamping device, and clamping the flange by an elastic chuck;

secondly, setting the highest position of the flange mounting hole on the flange as a point a, moving the detection part to a position capable of detecting the point a, rotating the push sleeve, when the detection part detects that one flange mounting hole reaches the point a, recording the rotation angle of the push sleeve as x by the angle detection device, continuing rotating the push sleeve along the same direction, when the detection part detects that another flange mounting hole reaches the point a, stopping rotating the push sleeve, and recording the rotation angle of the push sleeve as y by the angle detection device, so as to obtain the included angle between the connecting line of two adjacent flange mounting holes and the center of the flange as y-x;

and thirdly, rotating the pushing sleeve according to an included angle between the connecting line of the two adjacent flange mounting holes and the center of the flange to enable the flange to be in a preset position.

A pipe bending machine comprises pipe bending equipment and a clamping and bending integrated mechanism, wherein the clamping and bending integrated mechanism is the clamping and bending integrated mechanism for welding and bending a ship flange pipe firstly.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model relates to a bent integrative mechanism of clamp that boats and ships were welded earlier with flange pipe and are bent later, including the position stabilizing device, when the bending machine was bent the pipe fitting of having installed the flange and is operated, this positioner can fix a position the position of flange mounting hole well to make the staff can adjust the flange mounting hole to predetermined position according to the mounting hole position of location, realize the bending operation of taking flange pipe fitting, adjust conveniently and the precision is higher, has saved manpower and materials;

(2) the utility model relates to a bent integrative mechanism of clamp that boats and ships were welded earlier with flange pipe, when adopting the sensor as the detection part that detects flange mounting hole position, when the flange mounting hole passes through the detection position, because the mounting hole is the through-hole structure, so the sensor can detect the change of this department flange wall thickness, thereby signals, detects accurate swift;

(3) the utility model relates to a bent integrative mechanism of clamp that flange pipe welded earlier for boats and ships is curved afterwards, when adopting the pin as the detection part who detects flange mounting hole position, when the flange mounting hole passes through the detection position, the pin hugs closely on the flange terminal surface of detection position, lateral shifting mechanism applys a tiny pulling force to flange one side to the pin simultaneously, when the flange mounting hole passes through the detection position, the pin can insert in the mounting hole under the pulling force effect, thereby make the flange stall, in addition, because the action of gravity of the pipe fitting other end, the flange inclines easily, and the preceding terminal surface of pin hugs closely the terminal surface of flange, when having the gap between the terminal surface of the two, it is in the tilt state to explain the flange, therefore, the pin still possesses the function of detecting whether the flange is in the tilt state, guarantee the accuracy that the pipe fitting bends;

(4) the utility model relates to a clamp bending integrated mechanism for welding a flange pipe for a ship before bending, wherein a transverse moving mechanism and a vertical moving mechanism are respectively provided with a guide part, so as to ensure the accuracy of the moving directions of the transverse moving mechanism and the vertical moving mechanism, thereby improving the detection accuracy of a detection part;

(5) the utility model relates to a pipe fitting is bent integrative mechanism of clamp that flange pipe welded earlier for boats and ships, still include clamping device, cooperate with positioner, can pinpoint the position of flange mounting hole to according to the position rotation flange of locating, rotate the flange mounting hole to predetermined position, thereby prepare the return bend that accords with the operation requirement, fix a position accurately, it is convenient to adjust;

(6) the utility model relates to a clamping and bending method, which adopts the clamping and bending integrated mechanism that the ship flange pipe is welded before bending, can accurately and quickly adjust the position of the flange mounting hole to a preset position, and prepare a bent pipe which meets the use requirement, and has accurate positioning and convenient adjustment;

(7) the utility model relates to a bending machine adopts above-mentioned a bent integrative mechanism of clamp that flange pipe welded earlier for boats and ships back curved, can bend the operation to the pipe fitting of mounting flange to prepare out the return bend that accords with operation requirement.

Drawings

FIG. 1 is a schematic view of the operation of the pinch-bend integrated mechanism with a tube;

FIG. 2 is a front view of the pinch and bend integrated mechanism;

FIG. 3 is an isometric view of the clinch integral mechanism;

FIG. 4 is a front view of the positioning device;

FIG. 5 is an isometric view of the positioning device;

FIG. 6 is a schematic view of the pin construction;

in the figure: 1. a lateral movement mechanism; 11. a transverse driving cylinder; 12. a transverse slide block; 2. a vertical moving mechanism; 21. a detection section; 22. a vertical drive cylinder; 23. a vertical slide block; 3. a clamping device; 31. pushing a sleeve; 32. an elastic collet; 33. a drive mechanism.

Detailed Description

The invention will be further described with reference to specific embodiments and drawings.

Example 1

The utility model provides a bent integrative mechanism of clamp that boats and ships were welded before with flange pipe, includes positioner and clamping device 3, wherein, positioner installs in clamping device 3's top, when the bending machine was bent the operation to the pipe fitting of flange already installed, this positioner can the position of location flange mounting hole, prevents that the mounting hole of the flange of pipe fitting after bending can't match with the hole site of mounted position. The positioning device mainly comprises a transverse moving mechanism 1 and a vertical moving mechanism 2, and the specific structure and the working principle of the positioning device are described in detail below. It should be noted that for convenience of description, the description of the positioning device in various directions and positions in the present embodiment is based on the case that the positioning device is installed on the clamping device 3 of the bending machine, and the axis of the push sleeve 31 of the clamping device 3 is horizontal, and the specific structure of the positioning device is not to be construed in a limiting way.

As shown in fig. 4 and 5, the lateral movement mechanism 1 includes a lateral drive cylinder 11 and a lateral slider 12. In this embodiment, the whole of the transverse driving cylinder 11 is a rectangular parallelepiped structure, a piston rod of the transverse driving cylinder extends and retracts in the horizontal direction, and the front end of the piston rod is fixedly connected with the transverse sliding block 12. In order to ensure the accuracy of the moving direction of the transverse sliding block 12 and play a certain supporting role for the transverse sliding block 12, the pressure born by the piston rod is reduced. In the present embodiment, the transverse sliding block 12 is configured to be L-shaped, and when the piston rod is in a fully retracted state, two inner side surfaces of the transverse sliding block 12 forming a right angle respectively abut against the upper end surface and one of the side surfaces of the transverse driving cylinder 11. The front end of a piston rod of the transverse driving cylinder 11 is fixedly connected with one inner side surface of the transverse sliding block 12, a transverse guide rail is arranged on the upper end surface of the transverse driving cylinder 11 along the extension direction of the piston rod, and a transverse guide block matched with the transverse guide rail is arranged on the other inner side surface of the transverse sliding block 12.

The vertical moving mechanism 2 includes a vertical driving cylinder 22, a vertical slider 23, and a detection member 21. The vertical driving cylinder 22 is mounted on the horizontal sliding block 12, and basically has the same structure as the horizontal driving cylinder 11, and the extension direction of the piston rod of the vertical driving cylinder is perpendicular to the extension direction of the piston rod of the horizontal driving cylinder 11, and extends and retracts downwards in the vertical direction. In the event that the installation space of the lateral slide 12 is insufficient, mounting plates may be mounted on the lateral slide 12, as shown in fig. 4 and 5, in order to provide mounting controls for the vertical drive cylinder 22. The vertical slider 23 is also of an L-shaped structure substantially the same as the transverse slider 12, and one inner side surface thereof is fixedly connected with the front end of the piston rod of the vertical driving cylinder 22, and the other inner side surface thereof is attached to one side surface of the vertical driving cylinder 22 relative to the transverse driving cylinder 11. A vertical guide rail is arranged on the side surface of the vertical driving cylinder 22 along the extension direction of the piston rod of the vertical driving cylinder 22, and a vertical guide block matched with the vertical guide rail is arranged on the inner side surface of the vertical sliding block 23 attached to the vertical sliding block. The horizontal driving cylinder 11 and the vertical driving cylinder 22 may be oil cylinders or air cylinders, and in this embodiment, air cylinders are used.

The detection member 21 is mounted on a vertical slider 23. In order to enable the detection component 21 to better detect the position of the flange mounting hole, in the embodiment, a mounting plate is mounted on the lower portion of the vertical sliding block 23, the lower end of the mounting plate extends out of the lower end of the vertical sliding block 23, and the detection component 21 is mounted on the portion of the mounting plate extending out of the vertical sliding block 23. The detection member 21 may employ a sensor or a pin.

When the sensor is adopted, the optimal choice of the sensor is a distance sensor, and the detection position of the sensor is the central point of the flange mounting hole at the highest position on the flange when the flange is mounted on the clamping device 3, namely the position is on the central vertical line of the flange. When the flange mounting hole is located the position of should detecting, because the flange wall thickness who detects the position changes, the sensor can sense and send the signal of telecommunication.

When the pin is used, the pin horizontally penetrates through the mounting plate on the vertical sliding block 22, the end face of the pin is flat, and the axis of the pin is perpendicular to the end face of the flange. During operation, with the pin remove to the axis just to the detection position department of above-mentioned sensor, lateral shifting mechanism 1 control pin moves backward, makes the pin withstand the flange terminal surface, and lateral shifting mechanism 1 still exerts a small backward pulling force for the pin to when the flange rotates, the flange mounting hole is when detecting the position, the pin can just insert in the mounting hole, realizes the location effect. In addition, since the pipe is generally heavy in weight, when it is mounted on the holding device 3, the pipe and the flange are easily inclined by the weight of the pipe at the other end. When the pipe fitting is in a horizontal state, because the end face of the pin is flat and the axis is right opposite to the end face of the flange, when the pin is propped against the end face of the flange, no gap exists between the flange and the pipe fitting, and if the flange and the pipe fitting are inclined, a gap exists between the flange and the pipe fitting, therefore, the pin also has a function of detecting whether the flange is in an inclined state, and the bending accuracy of the pipe fitting is ensured.

The clamping device 3 comprises a push sleeve 31, an elastic chuck 32 arranged at the front end of the push sleeve 31 and a driving mechanism 33 for driving the push sleeve 31 to rotate and driving the elastic chuck 32 to open and close. The clamping device 3 can achieve the clamping purpose by adopting a common pipe bender clamping device in the prior art, so the specific structure and the working principle of the clamping device are not described in detail. As one of the patent names previously filed by the applicant: an elastic clamping device of a numerical control pipe bender, which has the following patent application numbers: CN201811427052.1, the clamping device in this document can be used as the clamping device 3 of the present embodiment.

The positioning device is installed above the collet 32, and specifically, as shown in fig. 1 to 3, a mounting plate for installing the positioning device is installed at the upper end of the push sleeve 31, and the front end of the mounting plate is close to the collet 32. When the push sleeve 31 is in a horizontal state, the transverse driving cylinder 11 of the positioning device is arranged at the front end of the mounting plate, and the transverse driving cylinder 22 is positioned in front of the elastic chuck 32. It should be noted that the extending and retracting direction of the piston rod of the transverse driving cylinder 11 is parallel to the axis of the push sleeve 31, the extending and retracting direction of the piston rod of the vertical driving cylinder 22 is in the vertical direction, and when the detecting part 21 is at the same height as the center of the elastic chuck 32, the detecting part 21 is located on the straight line of the axis of the push sleeve 31, that is, when the detecting part 21 is attached to the end face of the elastic chuck 32, the moving route of the detecting part 21 coincides with the vertical center line of the elastic chuck 32.

The angle detection device is installed at the other positions of the clamping device 3 or the positioning device or the pipe bender, and the angle detection device is installed on the clamping device 3 in the embodiment, adopts the encoder as the angle detection device, and is mainly used for detecting the rotation angle of the push sleeve 31, namely the rotation angle of the flange.

The following describes in detail how the clinch-integral mechanism grips a flanged pipe and adjusts the gripping method of the flange mounting hole.

After the pipe fitting with the flange is mounted on the clamping device 3, the elastic chuck 32 is controlled to clamp the flange, and the angle recording degree of the angle detection device is adjusted to be 0.

Secondly, after trying to make the center point of the highest position of the flange mounting hole on the flange be a point a (i.e. the detection position of the sensor of embodiment 1), one of the following two steps is selected according to the difference of the detection part 21:

(1) when the detecting member 21 is a sensor, the sensor is moved to a position where the point a can be detected, the push sleeve 31 is rotated, and when the sensor detects that one of the flange mounting holes reaches the point a, the angle detecting means records that the rotation angle of the push sleeve 31 is x. And continuing to rotate the push sleeve 31 along the same direction, when the detection part 21 detects that the second flange mounting hole reaches the point a, stopping the rotation of the push sleeve 31, and recording the rotation angle of the push sleeve 31 as y by the angle detection device, so that the included angle between the central connecting line of the two adjacent flange mounting holes and the flange is y-x. The method for accurately detecting the point a by the sensor can take the following form that when the flange mounting hole is located at the highest position of the flange, all positions of the mounting hole are set as sensing positions, and when all the sensing positions are sensed by the sensor, the angle detection device records the rotation angle.

(2) When the detection part 21 is a pin, the pin is moved to a point a and is propped against the end face of the flange, meanwhile, the transverse moving mechanism 1 applies a slight backward pulling force to the pin, the push sleeve 31 is rotated, when a flange mounting hole reaches the point a, the pin is inserted into the mounting hole under the action of the pulling force, the flange stops rotating, and the angle detection device records that the rotating angle of the push sleeve 31 is x. And moving the pin away from the mounting hole, rotating the flange, enabling the pin to abut against the flange end face of the point a again, inserting the pin into the mounting hole again when the second flange mounting hole reaches the point a, stopping the rotation of the flange, and recording the rotation angle of the push sleeve 31 as y by the angle detection device, so that the included angle between the central connecting line of the two adjacent flange mounting holes and the flange is y-x. Because the flange mounting hole possesses certain aperture, probably lead to the pin to insert the mounting hole after, still have the gap with between the mounting hole for detect the precision not enough. Therefore, the diameter of the pin can be set to be slightly smaller than the diameter of the mounting hole, thereby improving the detection accuracy as much as possible. In addition, the end of the pin in contact with the flange may be provided in a stepped circular truncated cone structure as shown in fig. 6, the diameter of the pin may be set to be slightly smaller than the diameter of the mounting hole, and the diameter of the circular truncated cone may be smaller than the diameter of the pin. When the mounting hole passes through the point a, the circular truncated cone section can be inserted into the mounting hole more easily, so that the situation that the pin is not inserted into the mounting hole due to the fact that the diameter of the pin is too close to the diameter of the mounting hole is prevented, and detection precision is improved.

Thirdly, after the detection component 21 detects that the second flange mounting hole passes through the point a, if the position of the mounting hole is required to be at the point a, the adjustment is not required. If the middle position of two mounting holes is required to be on the vertical center line of the flange where the point a is located, the push sleeve 31 can be rotated by (y-x)/2 degrees. Similarly, when the positions of 1/3, 1/4 and the like of the two mounting holes are needed, the two mounting holes are rotated by corresponding angles.

In summary, the clamping and bending integrated mechanism and the clamping method for welding and then bending the flange pipe for the ship in the embodiment can accurately position and adjust the position of the flange mounting hole when clamping the flanged pipe, and reduce errors caused by manual adjustment.

Example 2

A pipe bending machine, comprising pipe bending equipment and a clamp bending integrated mechanism, wherein the clamp bending integrated mechanism adopts the clamp bending integrated mechanism of embodiment 2 for welding and then bending a flange pipe for a ship. The pipe bender can clamp a pipe fitting with a flange and adjust the position of the pipe fitting, and a bent pipe meeting the use requirement is prepared.

The examples of the utility model are only right the utility model discloses a preferred embodiment describes, and not right the utility model discloses design and scope are injectd, do not deviate from the utility model discloses under the prerequisite of design idea, the field engineering technical personnel are right the utility model discloses a various deformation and improvement that technical scheme made all should fall into the protection scope of the utility model.

Claims (9)

1. The utility model provides a curved integrative mechanism of clamp that boats and ships were welded before with flange pipe, includes positioner, its characterized in that: the positioning device comprises a transverse moving mechanism (1) and a vertical moving mechanism (2); the vertical moving mechanism (2) is installed on a moving part of the transverse moving mechanism (1), and a detecting part (21) for detecting the position of the flange installation hole is installed on the moving part of the vertical moving mechanism (2).

2. The clamping and bending integrated mechanism for welding-before-bending of the marine flange pipe according to claim 1, is characterized in that: the detection member (21) is a sensor.

3. The clamping and bending integrated mechanism for welding-before-bending of the marine flange pipe according to claim 1, is characterized in that: the detection part (21) is a pin horizontally arranged.

4. The clamping and bending integrated mechanism for the marine flange pipe which is welded before bending as claimed in claim 1, 2 or 3, wherein: the transverse moving mechanism (1) comprises a transverse driving cylinder (11) and a transverse sliding block (12) installed at the front end of a piston rod of the transverse driving cylinder (11), and the vertical moving mechanism (2) is fixedly connected with the transverse sliding block (12).

5. The clamping and bending integrated mechanism for welding-before-bending of the marine flange pipe according to claim 4, is characterized in that: the vertical moving mechanism (2) comprises a vertical driving cylinder (22) and a vertical sliding block (23) which are arranged on the transverse sliding block (12); the telescopic direction of the piston rod of the vertical driving cylinder (22) is vertical to the telescopic direction of the piston rod of the transverse driving cylinder (11), and the front end of the piston rod of the vertical driving cylinder (22) is fixedly connected with a vertical sliding block (23); the detection component (21) is arranged on the vertical sliding block (23).

6. The clamping and bending integrated mechanism for welding-before-bending of the marine flange pipe according to claim 5, is characterized in that: and a transverse guide rail is arranged on the transverse driving cylinder (11) along the extension direction of a piston rod of the transverse driving cylinder (11), and a transverse guide block matched with the transverse guide rail is arranged on the transverse sliding block (12).

7. The clamping and bending integrated mechanism for welding-before-bending of the marine flange pipe according to claim 6, is characterized in that: the vertical driving cylinder (22) is provided with a vertical guide rail along the extension direction of a piston rod of the vertical driving cylinder (22), and the vertical sliding block (23) is provided with a vertical guide block matched with the vertical guide rail.

8. The clamping and bending integrated mechanism for welding-before-bending of the marine flange pipe according to claim 7, is characterized in that: the clamping device (3) comprises a push sleeve (31), an elastic chuck (32) arranged at the front end of the push sleeve (31), a driving mechanism (33) and an angle detection device for detecting the rotation angle of the push sleeve (31); the positioning device is positioned above the elastic chuck (32), and when the detection part (21) of the positioning device is positioned at the same height with the center of the elastic chuck (32), the detection part (21) is positioned on the straight line where the axis of the push sleeve (31) is positioned.

9. A pipe bending machine comprises a pipe bending device and a clamping and bending integrated mechanism, and is characterized in that: the integral clamping and bending mechanism is the integral clamping and bending mechanism for welding and bending a flange pipe for a ship firstly according to claim 8.

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