CN116197546A - Cutting magnetization device and method for magnetostrictive strip - Google Patents

Abstract

The invention relates to the technical field of ultrasonic guided wave detection, and discloses a device and a method for cutting and magnetizing a magnetostrictive strip, which are characterized by comprising the following steps: the device firstly cuts the strip through the cutting device, so that the cut surface of the strip is smooth, then the conveying device is matched with the magnetizing device, the cut strip is uniformly magnetized through the uniform speed provided by the conveying device, the static magnetic field is constant, and the accuracy of a detection result is improved; in addition, this device has realized automated processing through controlling means, and is low to operating personnel's proficiency requirement, and cutting and magnetization efficiency are higher to the device has still set up the feed bin and has deposited the strip, in order to guarantee that the strip can not appear damaging.

Description

Cutting magnetization device and method for magnetostrictive strip

Technical Field

The invention relates to the technical field of ultrasonic guided wave detection, in particular to a device and a method for cutting and magnetizing a magnetostrictive strip.

Background

The petroleum and petrochemical pipeline needs long-term stable maintenance in order to ensure safe operation, the pipeline needs to be accurately detected in the maintenance process, the traditional nondestructive detection technology can only detect local pipelines, the detection efficiency is low, the detection range is small, the detection omission possibility is high, the insulation layer on the pipeline needs to be removed, a foot rest is erected and the like, the process is complex, and the traditional nondestructive detection technology is gradually replaced along with the rapid development of the magnetostrictive ultrasonic guided wave detection technology at present.

Compared with the traditional nondestructive detection technology, the magnetostrictive ultrasonic guided wave detection technology has the advantages of wide application range, high detection efficiency, flexible and convenient operation, field portability design and the like, when the magnetostrictive ultrasonic guided wave detection is carried out, a magnetostrictive strip is required to be stuck on the surface of a detected structure, the magnetostrictive strip refers to a strip made of a material with a strong magnetostrictive effect, such as a nickel alloy strip, an iron-cobalt hard magnetic alloy strip, a Terfenol-D alloy strip and the like, because the detected structure is far away, the pipe diameters of the detected structure are different, the circumference is also different, the strip subjected to heat treatment is extremely hard and brittle, the strip is inconvenient to be processed into a small semi-finished product in factories, the strip is generally required to be cut and magnetized on site, and the conventional cutting magnetization method is that a detector firstly uses scissors to cut, and then uses a permanent magnet to magnetize the strip.

Disclosure of Invention

The purpose of the invention is that: the device and the method for cutting and magnetizing the magnetostrictive strip can ensure that the magnetostrictive strip is cut smoothly and magnetized uniformly, and are simple in structure and convenient to operate.

In order to achieve the above object, the present invention provides a magnetostrictive strip cutting magnetization device comprising: the device comprises a bracket, a conveying device, a feed bin, a cutting device, a magnetizing device and a control device;

the conveying device comprises a motor, a driving wheel, a driven wheel and a conveying belt which is wound on the peripheries of the driving wheel and the driven wheel in a transmission way, a rotating shaft of the driving wheel is in transmission connection with an output end of the motor, and the driving wheel and the driven wheel are sequentially rotatably arranged on the bracket from front to back;

the feeding bin is arranged at the front end of the conveying device and is arranged on the support, the feeding bin comprises a shell and a mounting rod arranged in the shell, the mounting rod is rotationally connected with the shell and is used for fixing a belt material, the bottom of the shell is also provided with an output port, and the output port is flush with the upper surface of the conveying belt;

the cutting device and the magnetizing device are sequentially arranged on the upper surface of the conveyor belt from front to back and are both arranged on the bracket, and the magnetizing device comprises a permanent magnet;

the control device is respectively and electrically connected with the motor and the cutting device and is used for controlling the motor and the cutting device to work.

Preferably, the feeding device further comprises a feeding device, the feeding device comprises a feeding groove and a baffle plate, the feeding groove is arranged at the rear end of the conveying device, a feeding opening is formed in the front end of the feeding groove, the feeding groove is arranged upwards from rear to front in an inclined mode, the feeding opening is flush with the upper surface of the conveying belt, and the baffle plate is arranged at the rear end of the feeding groove and is used for preventing the strip from falling off from the feeding groove.

Preferably, the device further comprises a fixing component, the fixing component comprises a first pressing wheel, a pressing block and a second pressing wheel, the first pressing wheel, the pressing block and the second pressing wheel are all arranged on the bracket, wherein the first pressing wheel is arranged between the feed bin and the cutting device, a first gap is arranged between the bottom of the first pressing wheel and the upper surface of the conveyor belt, the pressing block is arranged between the cutting device and the first pressing wheel, a second gap is arranged between the bottom of the pressing block and the upper surface of the conveyor belt, the second pinch roller is located between the cutting device and the magnetizing device, a third gap is arranged between the bottom of the second pinch roller and the upper surface of the conveyor belt, the first gap, the second gap and the third gap are mutually aligned, the belt is fixed on the upper surface of the conveyor belt through the first gap, the second gap and the third gap, and deviation caused by movement of the conveyor belt is avoided, so that normal operation of the cutting device and the magnetizing device is guaranteed.

Preferably, the cutting device comprises a laser cutting head, a driving device and a sliding rail, wherein the sliding rail is arranged on the support, the driving device is connected with the sliding rail in a sliding way, the laser cutting head is arranged on the driving device, and the cutting precision of the strip is ensured by adopting a laser cutting mode, so that the cutting surface of the strip is flat and has no stress concentration.

Preferably, the sliding track comprises an X-axis track and a Y-axis track, the X-axis track is slidably mounted on the support and can slide up and down along the support, the Y-axis track is slidably mounted on the X-axis track and can slide back and forth along the X-axis track, the driving device is slidably connected to the Y-axis track and can slide left and right along the Y-axis track, the laser cutting head can move in a space above the sliding track by arranging the X-axis track and the Y-axis track, when the shape of the structure to be measured is special, the strip with the shape matched with the structure can be cut, and after the cutting is finished, the laser cutting head can slide up along the support, so that the laser cutting head is far away from the upper surface of the conveyor belt, and the laser cutting head is further protected.

Preferably, the cutting device further comprises two working baffles, the two working baffles are respectively arranged on two sides of the conveyor belt along the width direction of the conveyor belt and correspond to the cutting device, a space between the two working baffles is defined as a cutting space, and operators and irrelevant staff in the cutting process are protected by arranging the working baffles.

Preferably, the cutting device further comprises a protective cover, wherein the protective cover is sleeved on the cutting device and the magnetizing device and is used for preventing the cutting device and the magnetizing device from being damaged in transportation.

Preferably, the driving wheel is further provided with a speed sensor, and the speed sensor is electrically connected with the control device, and is used for collecting the speed of the driving wheel and feeding the speed back to the control device, because the device needs to be carried to other positions when in use, the problem that the driving wheel is in contact with the driving wheel due to loosening of the driving wheel and other conditions in the transportation process is likely to occur, and in order to ensure that the driving wheel can move at a speed meeting the magnetization requirement of the magnetization device, the rotating speed of the driving wheel is regulated by setting the speed sensor on the driving wheel.

Preferably, the feeding bin further comprises a movable plate and a buckle, a feeding hole for placing the strip is further formed in the side face of the shell, the movable plate is mounted on the feeding hole through the buckle, the outer contour of the movable plate is matched with the shape of the feeding hole, and the strip can be rapidly supplemented through the feeding hole.

In order to solve the same technical problems, the invention also provides a cutting magnetization method of the magnetostrictive strip, which is based on the cutting magnetization device of the magnetostrictive strip, and comprises the following steps:

s1, sleeving a strip to be processed on the mounting rod, pulling one end of the strip out of the output port, and pulling the strip between the cutting device and the magnetizing device along the upper surface of the conveyor belt;

s2, respectively inputting the length, the width and the number of the strips to be cut into a control device, wherein the length of the strips is obtained by diameter parameters of a structure to be detected, and the width of the strips is obtained according to ultrasonic guided wave frequency selected by detection;

s3, controlling the cutting device to cut through the control device;

s4, after cutting is finished, the control device controls the driving wheel to rotate, so that the conveyor belt drives for a preset time at a preset speed, the cut strip is magnetized by the permanent magnet, and the preset time = the length of the strip to be cut ≡the preset speed;

s5, the control device controls the driving wheel to stop rotating, and the step S3 and the step S4 are repeated until the strip is magnetized completely;

s6, collecting the processed strip.

Compared with the prior art, the cutting magnetization device and method for the magnetostrictive strip have the beneficial effects that: the device cuts the strip through the cutting device to enable the cutting surface of the strip to be smooth, and then the conveying device is matched with the magnetizing device to enable the cut strip to be uniformly magnetized, so that the static magnetic field is constant, and the accuracy of the detection result is improved; in addition, this device has realized automated processing through controlling means, and is low to operating personnel's proficiency requirement, and cutting and magnetization efficiency are higher to the device has still set up the feed bin and has deposited the strip, in order to guarantee that the strip can not appear damaging.

Drawings

FIG. 1 is a schematic main structure of a cutting magnetization device for magnetostrictive strips according to an embodiment of the invention;

fig. 2 is a schematic main structure of the cutting device according to the embodiment of the present invention;

fig. 3 is a schematic main body structure of the feed bin according to the embodiment of the invention.

In the figure, 1, a bracket; 2. a transfer device; 21. a driving wheel; 22. driven wheel; 23. a conveyor belt; 3. a feed bin; 31. a housing; 311. an output port; 312. a feed supplement port; 32. installing a rod; 33. a movable plate; 34. a buckle; 4. a cutting device; 41. a laser cutting head; 42. a driving device; 43. a sliding rail; 431. an X-axis track; 432. a Y-axis track; 44. a working baffle; 5. a magnetizing device; 51. a permanent magnet; 6. a material receiving device; 61. a material collecting groove; 62. a striker plate; 7. a fixing assembly; 71. a first pinch roller; 72. pressing a material block; 73. a second pinch roller; 8. a protective cover; 9. a speed sensor.

Detailed Description

The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "upper," "top," "bottom," "inner," "outer," and the like as used herein are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

As shown in fig. 1 and 3, a magnetostrictive strip cutting magnetization device 5 according to a preferred embodiment of the present invention includes: a bracket 1, a conveying device 2, a feed bin 3, a cutting device 4, a magnetizing device 5 and a control device;

the conveying device 2 comprises a motor, a driving wheel 21, a driven wheel 22 and a conveying belt 23 which is wound on the peripheries of the driving wheel 21 and the driven wheel 22 in a transmission way, a rotating shaft of the driving wheel 21 is in transmission connection with an output end of the motor, and the driving wheel 21 and the driven wheel 22 are sequentially rotatably arranged on the bracket 1 from front to back;

the feeding bin 3 is arranged at the front end of the conveying device 2 and is mounted on the bracket 1, the feeding bin 3 comprises a shell 31 and a mounting rod 32 arranged in the shell 31, the mounting rod 32 is rotatably connected with the shell 31, the mounting rod 32 is used for fixing a belt material, an output port 311 is also formed in the bottom of the shell 31, and the output port 311 is flush with the upper surface of the conveying belt 23;

the cutting device 4 and the magnetizing device 5 are sequentially arranged on the upper surface of the conveyor belt 23 from front to back and are both arranged on the bracket 1, and the magnetizing device 5 comprises a permanent magnet;

the control device is respectively and electrically connected with the motor and the cutting device 4 and is used for controlling the motor and the cutting device 4 to work.

Based on the scheme, the device cuts the strip through the cutting device 4 to enable the cut surface of the strip to be flat, and then the conveying device 2 is matched with the magnetizing device 5 to enable the cut strip to be uniformly magnetized, so that the static magnetic field is constant, and the accuracy of the detection result is improved; in addition, the device realizes automatic processing through the control device, has low requirements on the proficiency of operators, has higher cutting and magnetizing efficiency, and is also provided with a feed bin 3 for storing the strips so as to ensure that the strips are not damaged.

As shown in fig. 1, in order to avoid damage to the strip after the cutting magnetization, the device further comprises a receiving device 6, the receiving device 6 comprises a receiving groove 61 and a baffle plate 62, the receiving groove 61 is arranged at the rear end of the conveying device 2, a receiving opening is arranged at the front end of the receiving groove 61, the receiving groove 61 is arranged obliquely upwards from back to front, the receiving opening is flush with the upper surface of the conveying belt 23, and the baffle plate 62 is arranged at the rear end of the receiving groove 61 and is used for preventing the strip from falling off from the receiving groove 61, and the cut and magnetized strip and waste are collected through the receiving groove 61.

As shown in fig. 1, in order to ensure that the strip does not deviate from the conveyor belt 23, the fixing assembly 7 further comprises a fixing assembly 7, wherein the fixing assembly 7 comprises a first pressing wheel 71, a pressing block 72 and a second pressing wheel 73, the first pressing wheel 71, the pressing block 72 and the second pressing wheel 73 are all arranged on the support 1, wherein the first pressing wheel 71 is arranged between the feed bin 3 and the cutting device 4, a first gap is arranged between the bottom of the first pressing wheel 71 and the upper surface of the conveyor belt 23, the pressing block 72 is arranged between the cutting device 4 and the first pressing wheel 71, a second gap is arranged between the bottom of the pressing block 72 and the upper surface of the conveyor belt 23, the second pressing wheel 73 is arranged between the cutting device 4 and the magnetizing device 5, a third gap is arranged between the bottom of the second pressing wheel 73 and the upper surface of the conveyor belt 23, the first gap, the second gap and the third gap are mutually aligned, and the movement of the conveyor belt 23 on the surface of the conveyor belt 23 due to the first gap, the third gap and the third gap is avoided.

As shown in fig. 2, in order to ensure cutting accuracy, the cutting device 4 includes a laser cutting head 41, a driving device 42 and a sliding rail 43, the sliding rail 43 is mounted on the support 1, the driving device 42 is slidably connected to the sliding rail 43, and the laser cutting head 41 is mounted on the driving device 42, so that the cutting accuracy of the strip material is ensured by adopting a laser cutting mode, and the cutting surface of the strip material is flat and has no stress concentration.

As shown in fig. 2, in order to enable the laser cutting head 41 to cut out the strips with different shapes, the sliding rail 43 includes an X-axis rail 431 and a Y-axis rail 432, the X-axis rail 431 is slidably mounted on the stand 1 and can slide up and down along the stand 1, the Y-axis rail 432 is slidably mounted on the X-axis rail 431 and can slide back and forth along the X-axis rail 431, the driving device 42 is slidably connected to the Y-axis rail 432 and can slide left and right along the Y-axis rail 432, and by providing the X-axis rail 431 and the Y-axis rail 432, the laser cutting head 41 can move in a space above the sliding rail 43, and when the shape of the structure to be measured is special, the strip with the shape adapted to the X-axis rail 431 can be cut out, and after the cutting is finished, the laser cutting head 41 can also slide up along the stand 1 by the X-axis rail 431 so as to be far from the upper surface of the conveyor belt 23, thereby protecting the laser cutting head 41.

As shown in fig. 1, in order to avoid injury to operators, the cutting device 4 further includes two working baffles 44, the two working baffles 44 are respectively disposed on two sides of the conveyor belt 23 along the width direction thereof, and correspond to the cutting device 4, a space between the two working baffles 44 is defined as a cutting space, and operators and irrelevant personnel in the cutting process are protected by disposing the working baffles 44.

As shown in fig. 1, in order to protect the cutting device 4 and the magnetizing device 5, the device further comprises a protecting cover 8, wherein the protecting cover 8 is sleeved on the cutting device 4 and the magnetizing device 5, so as to prevent the cutting device 4 and the magnetizing device 5 from being damaged during transportation.

As shown in fig. 1, in order to facilitate the adjustment of the rotation speed of the conveyor belt 23, the driving wheel 21 is further provided with a speed sensor 9, and the speed sensor 9 is electrically connected with the control device, and is used for collecting the speed of the conveyor belt 23 and feeding back the speed sensor to the control device, because the device needs to be carried to other positions when in use, the loosening of the conveyor belt 23 and other problems caused by the contact between the driving wheel 21 and the conveyor belt 23 may occur during the transportation process, and in order to ensure that the conveyor belt 23 can move at a speed meeting the magnetization requirement of the magnetization device 5, the speed sensor 9 is arranged on the driving wheel 21 to adjust the rotation speed of the conveyor belt 23.

As shown in fig. 3, in order to facilitate the replenishment of the strip, the supply bin 3 further includes a movable plate 33 and a buckle 34, a replenishment port 312 for placing the strip is further provided on a side surface of the housing 31, the movable plate 33 is mounted on the replenishment port 312 through the buckle 34, and an outer contour of the movable plate 33 is adapted to a shape of the replenishment port 312, so that the strip can be rapidly replenished through the replenishment port 312.

In order to solve the same technical problem, the invention also provides a method for cutting and magnetizing a magnetostrictive strip, based on the cutting and magnetizing device 5 of the magnetostrictive strip, comprising the following steps:

s1, sleeving a strip to be processed on the mounting bar 32, pulling one end of the strip out of the output port 311 and pulling the strip between the cutting device 4 and the magnetizing device 5 along the upper surface of the conveyor belt 23;

s2, respectively inputting the length, the width and the number of the strips to be cut into a control device, wherein the length of the strips is obtained by diameter parameters of a structure to be detected, and the width of the strips is obtained according to ultrasonic guided wave frequency selected by detection;

s3, controlling the cutting device 4 to cut through a control device;

s4, after cutting is finished, the control device controls the driving wheel 21 to rotate, so that the conveyor belt 23 drives at a preset speed for a preset time, the cut strip is magnetized by the permanent magnet 51, and the preset time = the length of the strip to be cut ≡ the preset speed;

s5, the control device controls the driving wheel 21 to stop rotating, and the step S3 and the step S4 are repeated until the strip is magnetized completely;

s6, collecting the processed strip.

In summary, the embodiment of the invention provides a cutting magnetization device 5 and a method for magnetostrictive strips, which firstly cut the strips through a laser cutting head 41 to enable the cutting surfaces of the strips to be smooth, and due to the sliding rails 43, the laser cutting head 41 can cut strips with different shapes to match structures to be detected with different shapes, and then the conveyer 2 is matched with the magnetization device 5 to enable the cut strips to be uniformly magnetized, so that the static magnetic field is constant, and the accuracy of detection results is improved; in addition, the device realizes automatic processing through the control device, has low requirements on the proficiency of operators, has higher cutting and magnetizing efficiency, and is also provided with a feed bin 3 for storing the strips so as to ensure that the strips are not damaged.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.

Claims (10)

1. A cutting magnetization device for magnetostrictive strips, comprising: the device comprises a bracket, a conveying device, a feed bin, a cutting device, a magnetizing device and a control device;

the conveying device comprises a motor, a driving wheel, a driven wheel and a conveying belt which is wound on the peripheries of the driving wheel and the driven wheel in a transmission way, a rotating shaft of the driving wheel is in transmission connection with an output end of the motor, and the driving wheel and the driven wheel are sequentially rotatably arranged on the bracket from front to back;

the feeding bin is arranged at the front end of the conveying device and is arranged on the support, the feeding bin comprises a shell and a mounting rod arranged in the shell, the mounting rod is rotationally connected with the shell and is used for fixing a belt material, the bottom of the shell is also provided with an output port, and the output port is flush with the upper surface of the conveying belt;

the cutting device and the magnetizing device are sequentially arranged on the upper surface of the conveyor belt from front to back and are both arranged on the bracket, and the magnetizing device comprises a permanent magnet;

the control device is respectively and electrically connected with the motor and the cutting device and is used for controlling the motor and the cutting device to work.

2. The magnetostrictive strip cutting magnetization device according to claim 1, further comprising a receiving device, wherein the receiving device comprises a receiving groove and a baffle plate, the receiving groove is arranged at the rear end of the conveying device and is mounted on the support, the front end of the receiving groove is provided with a receiving opening, the upper surface of the receiving groove is arranged obliquely upwards from back to front, the receiving opening is flush with the upper surface of the conveying belt, and the baffle plate is arranged at the rear end of the receiving groove and is used for preventing the strip from falling off from the receiving groove.

3. The magnetostrictive strip cutting magnetization device according to claim 1, further comprising a fixing assembly comprising a first pinch roller, a pinch roller block, and a second pinch roller, the first pinch roller, the pinch roller block, and the second pinch roller each mounted on the support, wherein the first pinch roller is disposed between the supply bin and the cutting device, a first gap is disposed between a bottom of the first pinch roller and an upper surface of the conveyor belt, the pinch roller block is disposed between the cutting device and the first pinch roller, and a second gap is disposed between a bottom of the pinch roller block and an upper surface of the conveyor belt, the second pinch roller is disposed between the cutting device and the magnetization device, a third gap is disposed between a bottom of the second pinch roller and an upper surface of the conveyor belt, and the first gap, the second gap, and the third gap are aligned with each other.

4. The device of claim 1, wherein the cutting device comprises a laser cutting head, a drive device and a sliding rail, the sliding rail mounted on the support, the drive device slidably coupled to the sliding rail, the laser cutting head mounted on the drive device.

5. The device according to claim 4, wherein the sliding rail comprises an X-axis rail and a Y-axis rail, the X-axis rail is slidably mounted on the support and is slidable up and down along the support, the Y-axis rail is slidably mounted on the X-axis rail and is slidable back and forth along the X-axis rail, and the driving device is slidably connected to the Y-axis rail and is slidable left and right along the Y-axis rail.

6. The apparatus according to claim 4, further comprising two work baffles provided on both sides of the conveyor belt in a width direction thereof, the work baffles being in correspondence with the cutting apparatus, a space between the work baffles being defined as a cutting space.

7. The magnetostrictive strip cutting magnetization device according to claim 1, further comprising a protective cover over the cutting device and the magnetization device for protecting the cutting device and the magnetization device.

8. The apparatus of claim 1, further comprising a speed sensor disposed on the drive wheel and electrically connected to the control device for sensing and feeding back the speed of the conveyor belt to the control device.

9. The magnetostrictive strip cutting magnetization device according to claim 1, wherein the feed bin further comprises a movable plate and a buckle, a feeding hole for placing the strip is further formed in the side surface of the shell, the movable plate is mounted on the feeding hole through the buckle, and the outer contour of the movable plate is matched with the shape of the feeding hole.

10. A method of cutting magnetization of a magnetostrictive strip, characterized in that the device is based on a magnetostrictive strip according to any of claims 1-9, comprising the following steps:

s1, sleeving a strip to be processed on the mounting rod, pulling one end of the strip out of the output port, and pulling the strip between the cutting device and the magnetizing device along the upper surface of the conveyor belt;

s2, respectively inputting the length, the width and the number of the strips to be cut into a control device;

s3, controlling the cutting device to cut through the control device;

s4, after cutting is finished, the control device controls the driving wheel to rotate, so that the conveyor belt drives for a preset time at a preset speed, the cut strip is magnetized by the permanent magnet, and the preset time = the length of the strip to be cut ≡the preset speed;

s5, the control device controls the driving wheel to stop rotating, and the step S3 and the step S4 are repeated until the strip is magnetized completely;

s6, collecting the processed strip.

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