Miniature elbow probe attachment marking machine and control method thereof

Abstract

The application discloses a micro-bent pipe probe attached marking machine and a control method thereof, and relates to the technical field of nondestructive flaw detection. The micro-bent pipe probe attached marking machine comprises a bent pipe probe, a marking device, and a driving device. The driving device comprises a steering gear mounting seat, a high-strength extension cable, a cable joint, a digital steering gear, and a driving turntable. The marking device comprises a compression spring, a storage rod, a marking machine front cover, a marking machine shell, and a printing sponge. The marking device is installed at the lower end of the bent part of the bent pipe probe, and the driving device is installed at the upper end of the bent part of the bent pipe probe, so that the sectional design of the reciprocating driving part and the printing front end is realized. The high-strength extension cable is used to connect the driving device and the marking device, nondestructive flaw detection is performed on the defect position of a test block, the marking machine is simplified and miniaturized, various pipe types can be adapted, the sectional mechanical device based on wire connection formed based on wire connection can be applied to bent pipe probes with various structures, and interference can be avoided.

Description

Technical Field

[0001] This invention relates to the field of nondestructive testing technology, and in particular to a micro-bent tube probe attachment marking machine and its control method. Background Technology

[0002] Currently, marking machines are mainly used in large mechanical components, furniture, and ceramics. There is no widely available method for physical defect identification in the field of non-destructive testing (NDT). In existing technologies, eddy current testing probes, when performing NDT on test blocks, can only determine if a defect signal exists along the current scanning path, making it difficult to mark and locate detected defects immediately. Currently, defect locations are mainly presented in C-scan form using a detection path-signal coupling algorithm. However, this method requires robots, high-speed pulse generators, and complex communication logic, and can only present defect locations on industrial control software. Manual re-inspection is still required to confirm the actual defect location on the test block. Existing miniature marking structures are generally laser marking, which has a relatively complex mechanical structure. Using lasers to etch marks onto the workpiece surface can easily damage the workpiece, and laser marks are difficult to erase, affecting the subsequent use of the workpiece. In addition, eddy current detection probes are designed to be as small as possible to adapt to narrow detection environments. However, existing stamp-type marking mechanisms require automatic reciprocating drive mechanisms. Commonly used pneumatic and electric actuators cannot separate the drive and marking mechanism, requiring at least one linkage. The excessive linkage structure makes the probe front end mechanism bulky, increasing the risk of interference during probe detection. Furthermore, existing marking machines driven by miniature cylinders and motor push rod mechanisms can only perform linear marking and are not suitable for other curved tube probes.

[0003] Therefore, there is an urgent need for a miniature marking device that can adapt to various pipe types. After a defect is detected by a miniature eddy current probe, it can mark the defect location on the test block without damage, while also reducing the mechanical structure to avoid interference. It is easy to erase without damaging the workpiece. Summary of the Invention

[0004] The purpose of this invention is to provide a miniature curved pipe probe attachment marking machine and its control method. While meeting the requirements of non-destructive testing marking, the segmented mechanical device based on line connection can be applied to any pipe type, realizing the simplification and miniaturization of the marking device.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] A miniature curved tube probe attachment and marking machine includes: a curved tube probe, a driving device, and a marking device; the curved tube probe is used for non-destructive testing of test blocks;

[0007] The drive device is installed at the upper end of the bent part of the bend probe, and the drive device includes a servo motor mounting base, a high-strength tensile cable, a cable knot, a digital servo motor, and a drive turntable;

[0008] The marking device is installed at the lower end of the curved part of the bent tube probe. The marking device includes: a compression spring, a storage rod, a front cover of the marking machine, a housing of the marking machine, and an imprinting sponge.

[0009] The servo mounting base and the marking machine housing are respectively fixedly mounted on the pipe bending probe. The digital servo is fixedly mounted on the servo mounting base. The drive turntable meshes with the digital servo through the servo gear. The tail of the high-strength tensile cable is fixed to the circumferential surface of the drive turntable through the cable knot.

[0010] The front cover of the marking machine is installed at the bottom of the marking machine housing. The storage rod is movably inserted through the marking machine housing and the front cover. The upper end of the storage rod extends out of the marking machine housing and is connected to the head of the high-strength tensile cable. The lower end of the storage rod extends out of the front cover and is fitted with the printing sponge. A storage rod limiting ring is provided on the storage rod, which is located inside the marking machine housing. The compression spring is sleeved on the storage rod and is located between the storage rod limiting ring and the housing of the marking machine housing.

[0011] Furthermore, the marking device also includes a relay seat, which is fixedly installed on the bent tube probe and located at the upper end of the marking machine housing. The high-strength tensile cable passes through the relay seat and is connected to the storage rod.

[0012] Furthermore, it also includes a cable guide copper tube, which is located between the driving device and the marking device, and the high-strength tensile cable is threaded through the cable guide copper tube.

[0013] Furthermore, a tail pin is provided at the upper end of the storage rod, and the head of the high-strength tensile cable is fixedly connected to the tail pin.

[0014] The present invention also provides a control method for a micro-bent tube probe attachment and marking machine, applied to the micro-bent tube probe attachment and marking machine, comprising:

[0015] Initial state: When the digital servo drives the turntable to move counterclockwise, the high-strength tension cable pulls the storage rod and the storage rod limiting ring upward. At this time, the storage rod limiting ring presses upward to compress the compression spring, so that the compression spring is in a compressed state. At this time, the imprinting sponge is away from the surface of the test block.

[0016] Marking status: When the digital servo drives the turntable to move clockwise, the high-strength tension cable relaxes, the pressure of the storage rod limit ring on the compression spring decreases, the compression spring rebounds and is in an extended state, pushing the storage rod down, imprinting the sponge onto the surface of the test block and leaving a defect mark.

[0017] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects: The present invention provides a miniature curved tube probe attachment marking machine and its control method, in which the marking device is installed at the lower end of the curved part of the curved tube probe, and the driving device is installed at the upper end of the curved part of the curved tube probe. The reciprocating driving component and the printing front end are segmented, and the driving device and the marking device are connected by a high-strength tensile wire. This achieves non-destructive marking of the defect location of the test block, while simplifying and miniaturizing the marking machine. The segmented mechanical device based on line connection can be applied to curved tube probes of various structures and can avoid interference. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an overall structural diagram of the micro-bent tube probe attachment marking machine according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the driving device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the marking device according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram illustrating the working principle of the micro-bent tube probe attachment marking machine in its initial state according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of a digital servo motor driving a drive turntable in reciprocating motion in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram illustrating the working principle of the micro-bent tube probe attachment marking machine in marking mode according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached diagram: 1. Bend probe; 2. Servo mount; 3. High-strength tensile cable; 4. Cable junction; 5. Digital servo; 6. Drive turntable; 7. Cable guide copper tube; 8. Repeater; 9. Tail pin; 10. Marking machine housing; 11. Compression spring; 12. Storage rod limit ring; 13. Marking machine front cover; 14. Imprinting sponge; 15. Storage rod; 16. Drive unit; 17. Marking device. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] The purpose of this invention is to provide a miniature curved tube probe attachment marking machine and its control method. While satisfying the requirement of non-destructive marking, the segmented mechanical device based on line connection can be applied to any tube type, and also realizes the simplification and miniaturization of the marking device.

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1-3 As shown, the miniature bent tube probe attachment marking machine provided in this embodiment of the invention includes: a bent tube probe 1, a driving device 16, and a marking device 17; the bent tube probe 1 is used to perform non-destructive testing on the test block;

[0030] The drive device 16 is installed at the upper end of the bent part of the pipe probe 1. The drive device 16 includes a servo mounting base 2, a high-strength tensile cable 7, a cable knot 4, a digital servo 5, and a drive turntable 6.

[0031] The marking device 17 is installed at the lower end of the bent part of the bent tube probe 1. The marking device 17 includes: a compression spring 11, a material storage rod 15, a front cover of the marking machine 13, a marking machine housing 10, and an imprinting sponge 14.

[0032] The servo mounting base 2 and the marking machine housing 10 are respectively fixedly mounted on the pipe bending probe 1. The digital servo 5 is fixedly mounted on the servo mounting base 2. The drive turntable 6 is meshed with the digital servo 5 through the servo gear. The tail of the high-strength tensile cable is fixed on the circumferential surface of the drive turntable through the cable knot.

[0033] The front cover 13 of the marking machine is installed at the bottom of the outer shell 10 of the marking machine. The storage rod 15 is movably inserted through the outer shell 10 and the front cover 13 of the marking machine. The upper end of the storage rod 15 extends out of the outer shell 10 of the marking machine and is connected to the head of the high-strength tensile cable 3. The lower end of the storage rod 15 extends out of the front cover 13 of the marking machine and is installed with the printing sponge 14. A storage rod limiting ring 12 is provided on the storage rod 15. The storage rod limiting ring 12 is located inside the outer shell 10 of the marking machine. The compression spring 11 is sleeved on the storage rod 15 and is located between the storage rod limiting ring 12 and the shell of the outer shell 10 of the marking machine.

[0034] In a further embodiment, the marking device 17 further includes a relay seat 8, which is fixedly installed on the bent tube probe 1 and located at the upper end of the marking machine housing 10. The high-strength tensile cable 3 passes through the relay seat 8 and is connected to the material storage rod 15.

[0035] In a further embodiment, the miniature bent probe attachment also includes a cable guide copper tube 7, which is located between the drive device 16 and the marking device 17. The high-strength tensile cable 3 passes through the cable guide copper tube 7. Specifically, mounting holes for the cable guide copper tube 7 can be provided in the servo mount 2 and the repeater mount 8. The cable guide copper tube 7 can be installed between the servo mount 2 and the repeater mount 8 to guide the high-strength tensile cable 3 and prevent friction between the high-strength tensile cable 3 and other structures.

[0036] In a further embodiment, the upper end of the storage rod 15 is provided with a tail pin 9, and the head of the high-strength tensile cable 3 is fixedly connected to the tail pin 9.

[0037] like Figure 4-6 As shown, the present invention also provides a control method for a miniature curved tube probe attachment and marking machine, applied to the miniature curved tube probe attachment and marking machine, comprising:

[0038] Initial state: When the digital servo motor 5 drives the drive turntable 6 to move counterclockwise, the high-strength tension cable 3 pulls the storage rod 15 and the storage rod limiting ring 12 upward. At this time, the storage rod limiting ring 12 presses the compression spring 11 upward, so that the compression spring 11 is in a compressed state. At this time, the printing sponge 14 moves away from the surface of the test block.

[0039] Marking status: When the digital servo motor 5 drives the drive turntable 6 to move clockwise, the high-strength tension cable 3 relaxes, the pressure of the storage rod limit ring 12 on the compression spring 11 decreases, the compression spring 11 rebounds and is in an extended state, pushing the storage rod 15 down, imprinting the sponge 14 onto the surface of the test block and leaving a defect mark.

[0040] In summary, the miniature curved tube probe attachment marking machine and its control method provided by this invention install the marking device at the lower end of the curved part of the curved tube probe and the drive device at the upper end of the curved part of the curved tube probe. This achieves a segmented design of the reciprocating drive component and the printing front end, and uses a high-strength tensile wire to connect the drive device and the marking device. This enables non-destructive marking of the defect location of the test block while simplifying and miniaturizing the marking machine. The resulting segmented mechanical device based on wire connection is applicable to curved tube probes of various structures.

[0041] The remaining technical features in this embodiment can be flexibly selected by those skilled in the art to meet different specific practical needs. However, it is obvious to those skilled in the art that these specific details are not necessary to implement the present invention. In other instances, to avoid obscuring the present invention, well-known components, structures, or parts are not specifically described, and all are within the scope of technical protection defined by the claims of the present invention.

[0042] Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this invention should be within the protection scope of the appended claims. In the above description, numerous specific details have been set forth to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other instances, to avoid obscuring the invention, well-known techniques, such as specific construction details, operating conditions, and other technical conditions, have not been specifically described.

[0043] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A miniature curved tube probe attachment and marking machine, characterized in that, include: The device includes a bent tube probe, a drive unit, and a marking device; the bent tube probe is used for non-destructive testing of the test block. The drive device is installed at the upper end of the bent part of the bend probe, and the drive device includes a servo motor mounting base, a high-strength tensile cable, a cable knot, a digital servo motor, and a drive turntable; The marking device is installed at the lower end of the curved part of the bent tube probe. The marking device includes: a compression spring, a storage rod, a front cover of the marking machine, a housing of the marking machine, and an imprinting sponge. The servo mounting base and the marking machine housing are respectively fixedly mounted on the bent tube probe. The digital servo is fixedly mounted on the servo mounting base. The drive turntable meshes with the digital servo through the servo gear. The tail of the high-strength tensile cable is fixed to the circumferential surface of the drive turntable through the cable knot. The front cover of the marking machine is installed at the bottom of the marking machine housing. The storage rod is movably inserted through the marking machine housing and the front cover. The upper end of the storage rod extends out of the marking machine housing and is connected to the head of the high-strength tensile cable. The lower end of the storage rod extends out of the front cover and is fitted with the printing sponge. A storage rod limiting ring is provided on the storage rod, and the storage rod limiting ring is located inside the marking machine housing. The compression spring is sleeved on the storage rod and is located between the storage rod limiting ring and the housing of the marking machine housing. The marking device also includes a relay seat, which is fixedly installed on the bent tube probe and located at the upper end of the marking machine housing. The high-strength tensile cable passes through the relay seat and is connected to the storage rod. It also includes a cable guide copper tube, which is located between the driving device and the marking device, and the high-strength tensile cable is threaded through the cable guide copper tube.

2. The miniature curved tube probe attachment and marking machine according to claim 1, characterized in that, The upper end of the storage rod is provided with a tail pin, and the head of the high-strength tensile cable is fixedly connected to the tail pin.

3. A control method for a miniature curved tube probe attachment and marking machine, applied to the miniature curved tube probe attachment and marking machine according to any one of claims 1-2, characterized in that, include: Initial state: When the digital servo drives the turntable to move counterclockwise, the high-strength tension cable pulls the storage rod and the storage rod limiting ring upward. At this time, the storage rod limiting ring presses upward to compress the compression spring, so that the compression spring is in a compressed state. At this time, the imprinting sponge is away from the surface of the test block. Marking status: When the digital servo drives the turntable to move clockwise, the high-strength tension cable relaxes, the pressure of the storage rod limit ring on the compression spring decreases, the compression spring rebounds and is in an extended state, pushing the storage rod down, imprinting the sponge onto the surface of the test block and leaving a defect mark.

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