Nondestructive testing method and device for carbon fiber tube

Abstract

The invention discloses a nondestructive testing method and device for a carbon fiber pipe, and relates to the field of carbon fiber pipe detection equipment.The nondestructive testing device comprises an equipment base, a pipeline clamping structure and a pipeline detection structure, the pipeline clamping structure comprises a chuck and a pipeline support, and the chuck is used for clamping the carbon fiber pipe from the end; the pipeline detection structure comprises a cleaning rod and a sleeve rod, a cleaning drill bit is arranged at the end of the cleaning rod, a spiral piece is arranged at the rear end of the cleaning drill bit, the sleeve rod connected to the cleaning rod in a sleeving mode is arranged at the rear end of the spiral piece, and the rear end of the cleaning rod is connected to the motor structure. The motor structure is mounted on the transverse moving structure and can drive the cleaning rod to rotate; the transverse moving structure can drive the motor structure and the pipeline detection structure to move front and back, and the transverse moving structure is installed on the equipment base. A driving hammer structure is further arranged on the side face of the equipment base and used for beating the carbon fiber tube.

Description

Technical Field

[0001] The invention relates to the field of carbon fiber tube detection equipment, and in particular to a nondestructive detection method and device for a carbon fiber tube. Background Art

[0002] One of the main ways to form carbon fiber tubes is through winding. The main process is to wind the carbon fiber filaments on a core shaft, form a tube after thermal curing and then remove it from the core shaft. During the winding process, the carbon fiber composite material prepreg layers on the core shaft may be relatively loose due to insufficient tension applied to compact the prepreg stack when the prepreg stack is laid on the core shaft, resulting in wrinkles, delamination and glue-rich problems. In the process of removal, the release agent used on the core shaft may cause surface quality problems such as tearing and scratching on the inner hole wall.

[0003] Because these problems are mainly concentrated on the inner wall of the pipe, the general method is to soak the pipe in water and use an ultrasonic probe (there is a layer of water between the probe and the workpiece surface as a coupling agent) to penetrate into the pipe for inspection. In this process, the thickness of the water layer must be stable during rotation, the overall implementation cost is high, and the shape and size of some scratches cannot be displayed very intuitively, and the overall efficiency is not high. Summary of the invention

[0004] The object of the present invention is to provide a nondestructive testing method and device for carbon fiber tubes to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a nondestructive testing device for a carbon fiber tube, comprising a device base, on which a pipe clamping structure and a pipe detection structure are sequentially arranged, the pipe clamping structure is fixed on the device base and used to clamp the carbon fiber tube, and the pipe detection structure is slidably mounted on the device base and is located on the opposite side of the pipe clamping structure;

[0006] The pipe clamping structure comprises a clamping plate and a pipe support, wherein the clamping plate is used to clamp the carbon fiber pipe from the end;

[0007] The pipeline detection structure includes a cleaning rod and a sleeve rod, the end of the cleaning rod is provided with a cleaning drill bit, the rear end of the cleaning drill bit is provided with a spiral sheet, the rear end of the spiral sheet is provided with a sleeve rod sleeved on the cleaning rod, the rear end of the cleaning rod is connected to the motor structure, and the end of the cleaning rod is connected to an external pump through a connecting pipe;

[0008] The motor structure is installed on the transverse movement structure, and the motor structure can drive the cleaning rod to rotate;

[0009] The transverse movement structure can drive the motor structure and the pipeline detection structure to move forward and backward, and the transverse movement structure is installed on the equipment base;

[0010] A hammer structure is also provided on the side of the device base, and the hammer structure is used for striking the carbon fiber tube.

[0011] Preferably, the cleaning rod is a hollow structure, and a cleaning plate and a groove are provided on the top of the cleaning drill bit, and the groove is connected to the middle hole of the cleaning rod.

[0012] Preferably, a guiding bevel is provided between the cleaning drill bit and the spiral blade.

[0013] Preferably, a cleaning pad is provided on the cleaning plate.

[0014] Preferably, the sleeve rod is fixedly mounted on the cleaning rod, a holder is provided at the front end of the sleeve rod, and an annular light strip is provided on the holder.

[0015] Preferably, the sleeve rod is slidably connected in the guide sleeve, the guide sleeve is slidably connected in the fixing frame, and the fixing frame is fixedly mounted on the base.

[0016] Preferably, the motor structure includes motor 1, gear 1, gear 2 and a protective frame, wherein motor 1 is fixedly mounted on the outer surface of the protective frame and connected to gear 1 via a transmission shaft, gear 2 is meshed with gear 1 and fixedly connected to a cleaning rod, and the rear end of the cleaning rod is rotatably connected to the protective frame.

[0017] Preferably, the transverse movement structure includes motor 2, a threaded rod, a threaded block, a guide shaft and a guide shaft seat, the output shaft of motor 2 is connected to the threaded rod, both ends of the threaded rod are rotatably connected in the support seat, the threaded block is threadedly connected to the threaded rod, the guide shaft is symmetrically arranged on both sides of the threaded rod, both ends of the guide shaft are fixedly connected to the guide shaft seat, the protective frame is fixedly installed on the threaded block, and both sides of the protective frame are slidably connected to the guide shaft through extension plates.

[0018] Preferably, the hammer structure includes an electromagnetic track, an electric push rod, a clamping block, a hammer rod and a hammer head. The electromagnetic track is installed in the base of the equipment. The electric push rod is installed between the clamping block and the sliding block by means of a bolt inserted from the clamping block and threadedly connected to the sliding block on the electromagnetic track at the bottom. The output shaft of the electric push rod is connected to the tail of the hammer rod. The hammer rod is rotatably connected to the rotating seat through a rotating shaft. The bottom of the rotating seat is connected to the clamping block, and the hammer head is connected to the head of the hammer rod.

[0019] A method for detecting a carbon fiber tube by a nondestructive testing device, comprising the following steps:

[0020] S1. Pass the carbon fiber tube through the pipe bracket and fix one end by clamping it with a chuck;

[0021] S2. The motor structure is started to drive the cleaning rod and the sleeve rod to rotate, and the cleaning rod is moved into the carbon fiber tube through the lateral movement structure, and the cleaning rod is set to clean the tube from one end to the other end;

[0022] S3. During the process of S2, a water mist mixed with fluorescent liquid is sprayed into the tube through the groove provided, and the water mist is evenly applied to the inner wall of the tube by rotating the spiral blade;

[0023] S4. During the process of S3, the electromagnetic track and the electric push rod are simultaneously started, so that the hammer head swings up and down to form a hammer, and strikes the carbon fiber tube, thereby helping water to diffuse on the inner wall of the tube through vibration;

[0024] S5. After the cleaning drill bit of the cleaning rod is moved out from the other end of the carbon fiber tube, the traverse structure is controlled to move back so that the cleaning drill bit re-enters the tube and removes excess water through the cleaning plate;

[0025] S6. Visually inspect the remaining water marks in the tube to determine whether there are any scratches, bruises or defects in the tube;

[0026] S7. Re-clean, pack and package the carbon fiber tube

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The invention can clean the inner wall of the pipeline through the pipeline detection structure, and at the same time spray water mist containing fluorescent liquid on the inner wall of the pipeline. Through the accumulation of water mist in the traces of strain and scratches, the presence, location, size and other information of the traces can be quickly judged, thereby achieving quality judgment and process improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the structure of the present invention;

[0032] Figure 4 for Figure 2 Enlarged view of the structure at point A.

[0033] In the figure: 1- equipment base;

[0034] 2- pipe clamping structure; 21- clamping plate; 22- pipe support;

[0035] 3- pipeline detection structure; 31- cleaning rod; 311- cleaning drill bit; 312- spiral plate; 313- groove; 314- cleaning plate;

[0036] 32- sleeve rod; 321- holder; 322- ring light strip; 323- guide sleeve; 324- fixing bracket; 325- base;

[0037] 4-motor structure; 41-motor one; 42-gear one; 43-gear two; 44-protection frame;

[0038] 5-transverse movement structure; 51-motor 2; 52-threaded rod; 53-threaded block; 54-guide shaft; 55-guide shaft seat;

[0039] 6-hammer structure; 61-electromagnetic track; 62-electric push rod; 63-clamp block; 64-hammer rod; 65-hammer head; 67-sliding block; 68-rotating seat;

[0040] 100-Carbon fiber tube. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figures 1 to 4 The present invention provides a technical solution: comprising an equipment base 1, on which a pipeline clamping structure 2 and a pipeline detection structure 3 are sequentially arranged, wherein the pipeline clamping structure 2 is fixed on the equipment base 1 and is used to clamp a carbon fiber tube 100, and the pipeline detection structure 3 is slidably mounted on the equipment base 1 and is located on the opposite side of the pipeline clamping structure 2;

[0043] In this embodiment, the pipeline clamping structure 2 includes a chuck 21 and a pipeline support 22. The chuck 21 is used to clamp the carbon fiber tube 100 from the end. The rear end of the chuck 21 is connected to the power equipment, which can drive the chuck 21 to rotate in the opposite direction of the pipeline detection structure 3. The carbon fiber tube 100 can be driven to rotate by the clamping of the chuck 21. The pipeline support 22 is used to support the carbon fiber tube 100.

[0044] In this embodiment, the pipeline detection structure 3 includes a cleaning rod 31 and a sleeve rod 32. A cleaning drill bit 311 is provided at the end of the cleaning rod 31. A spiral sheet 312 is provided at the rear end of the cleaning drill bit 311. A sleeve rod 32 sleeved on the cleaning rod 31 is provided at the rear end of the spiral sheet 312. The rear end of the cleaning rod 31 is connected to the motor structure 4. The end of the cleaning rod 31 is connected to an external pump through a connecting pipe. The cleaning drill bit 311 is used to clean the release agent, burrs, dust and the like on the inner wall of the pipeline to prevent the adhesion of water mist and fluorescent liquid from being affected.

[0045] In this embodiment, the motor structure 4 is installed on the transverse movement structure 5, and the motor structure 4 can drive the cleaning rod 31 to rotate;

[0046] In this embodiment, the transverse movement structure 5 can drive the motor structure 4 and the pipeline detection structure 3 to move forward and backward, and the transverse movement structure 5 is installed on the equipment base 1;

[0047] In this embodiment, a hammer structure 6 is further provided on the side of the device base 1, and the hammer structure 6 is used to knock the carbon fiber tube 100. The hammer structure 6 can help diffuse the water mist through vibration. At the same time, the sound generated by knocking can also help determine whether there are defects such as stratification and gaps in the carbon fiber tube 100.

[0048] In this embodiment, the cleaning rod 31 is a hollow structure, and a cleaning plate 314 and a groove 313 are provided on the top of the cleaning drill bit 311. The groove 313 is connected to the middle hole of the cleaning rod 31. The diameter of the cleaning plate 314 matches the inner diameter of the carbon fiber tube 100, which is convenient for cleaning the inner wall of the tube. The groove 313 is used to spray water mist.

[0049] In this embodiment, a guiding slope is provided between the cleaning drill bit 311 and the spiral blade 312 , and the guiding slope facilitates the sprayed water mist to enter the chamber where the spiral blade 312 is located.

[0050] In this embodiment, a cleaning pad is provided on the cleaning plate 314, and the cleaning pad can prevent the cleaning plate 314 from scratching the inner wall of the pipeline and affecting the detection.

[0051] In this embodiment, the sleeve rod 32 is fixedly installed on the cleaning rod 31, and a holder 321 is provided at the front end of the sleeve rod 32. The holder 321 is provided with an annular light strip 322. The annular light strip 322 excites the fluorescent liquid through light, so that the fluorescent liquid can produce bright light for easy observation.

[0052] In this embodiment, the sleeve rod 32 is slidably connected in the guide sleeve 323, the guide sleeve 323 is slidably connected in the fixing frame 324, and the fixing frame 324 is fixedly installed on the base 325. The guide sleeve 323 and the fixing frame 324 support the sleeve rod 32 to keep it horizontal.

[0053] In this embodiment, the motor structure 4 includes a motor 41, a gear 42, a gear 43 and a protective frame 44. The motor 41 is fixedly mounted on the outer surface of the protective frame 44 and is connected to the gear 42 through a transmission shaft. The gear 43 is meshed with the gear 42 and is fixedly connected to the cleaning rod 31. The rear end of the cleaning rod 31 is rotatably connected to the protective frame 44, and the cleaning rod 31 is rotated by the drive of the motor 41.

[0054] In this embodiment, the transverse movement structure 5 includes a motor 2 51, a threaded rod 52, a threaded block 53, a guide shaft 54 ​​and a guide shaft seat 55. The output shaft of the motor 2 51 is connected to the threaded rod 52, both ends of the threaded rod 52 are rotatably connected in the support seat, the threaded block 53 is threadedly connected to the threaded rod 52, the guide shaft 54 ​​is symmetrically arranged on both sides of the threaded rod 52, both ends of the guide shaft 54 ​​are fixedly connected to the guide shaft seat 55, the protective frame 44 is fixedly installed on the threaded block 53, and both sides of the protective frame 44 are slidably connected to the guide shaft 54 ​​through extension plates. Driven by the motor 2 51, the pipeline detection structure 3 can move forward and backward, thereby controlling the entry and exit.

[0055] In this embodiment, the hammer structure 6 includes an electromagnetic track 61, an electric push rod 62, a clamping block 63, a hammer rod 64 and a hammer head 65. The electromagnetic track 61 is installed in the equipment base 1, and the electric push rod 62 is installed between the clamping block 63 and the sliding block 67 through a bolt inserted from the clamping block 63 and threadedly connected to the sliding block 67 on the electromagnetic track 61. The output shaft of the electric push rod 62 is connected to the tail of the hammer rod 64, and the hammer rod 64 is rotatably connected to the rotating seat 68 through a rotating shaft. The bottom of the rotating seat 68 is connected to the clamping block 63, and the hammer head 65 is connected to the head of the hammer rod 64. Driven by the electric push rod 62, the hammer head 65 can continuously hit the carbon fiber tube 100.

[0056] The present invention also provides a method for detecting a carbon fiber tube by a nondestructive testing device, comprising the following steps:

[0057] S1. Pass the carbon fiber tube 100 through the pipe support 22 and clamp one end of the tube 100 through the chuck 21;

[0058] Here, the carbon fiber tube 100 can be driven to rotate by the chuck 21 .

[0059] S2. The motor structure 4 is started to drive the cleaning rod 31 and the sleeve rod 32 to rotate, and the cleaning rod 31 is moved into the carbon fiber tube 100 by the lateral movement structure 5, and the cleaning rod 31 is set to clean the tube from one end to the other end;

[0060] Clean off the burrs, release agents, dust, etc. inside the pipe to prevent these debris from affecting the adhesion of water mist to the inner wall of the pipe.

[0061] S3. During the process of S2, a water mist mixed with fluorescent liquid is sprayed into the tube through the groove 313, and the water mist is evenly applied to the inner wall of the tube by rotating the spiral blade 312;

[0062] Water or water mist mixed with fluorescent liquid is pumped into the hollow cleaning rod 31 through an external pump body, and the water or water mist that enters is evenly smeared on the inner wall of the pipe under the rotation of the spiral sheet 312 .

[0063] S4. During the process of S3, the electromagnetic track 61 and the electric push rod 62 are simultaneously started, so that the hammer head 65 swings up and down to form a hammer, and the carbon fiber tube 100 is struck, and the water is diffused on the inner wall of the tube by vibration;

[0064] Through continuous knocking, it can help water or water mist flow better on the pipe wall, and secondly, it can help water better penetrate into the scratches and strain marks that may exist in the pipe wall and adhere to it.

[0065] S5. After the cleaning drill bit 311 of the cleaning rod 31 is moved out from the other end of the carbon fiber tube 100, the traverse structure 5 is controlled to retreat so that the cleaning drill bit 311 re-enters the tube and removes excess water through the cleaning plate 314;

[0066] The cleaning drill bit 311 and the cleaning plate 314 which have retreated into the pipe can move closely against the pipe wall to discharge the excess water on the pipe wall that has not penetrated into the scratch, leaving only the water in the scratch.

[0067] S6. Visually inspect the remaining water marks in the tube to determine whether there are any scratches, bruises or defects in the tube;

[0068] The fluorescent liquid is stimulated by the supplementary light of the annular light strip 322 to emit light, and whether there is a quality problem of the inner wall can be visually observed.

[0069] S7. Re-clean, pack and package the carbon fiber tube 100.

[0070] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A nondestructive testing device for a carbon fiber tube, characterized in that: The device comprises an equipment base (1), wherein a pipeline clamping structure (2) and a pipeline detection structure (3) are sequentially arranged on the equipment base (1), wherein the pipeline clamping structure (2) is fixed on the equipment base (1) and is used to clamp a carbon fiber tube (100), and the pipeline detection structure (3) is slidably mounted on the equipment base (1) and is located on the opposite side of the pipeline clamping structure (2); The pipe clamping structure (2) comprises a clamping plate (21) and a pipe support (22), wherein the clamping plate (21) is used to clamp the carbon fiber pipe (100) from the end; The pipeline detection structure (3) comprises a cleaning rod (31) and a sleeve rod (32); a cleaning drill bit (311) is provided at the end of the cleaning rod (31); a spiral sheet (312) is provided at the rear end of the cleaning drill bit (311); a sleeve rod (32) sleeved on the cleaning rod (31) is provided at the rear end of the spiral sheet (312); the rear end of the cleaning rod (31) is connected to the motor structure (4); and the end of the cleaning rod (31) is connected to an external pump via a connecting pipe; The motor structure (4) is installed on the transverse movement structure (5), and the motor structure (4) can drive the cleaning rod (31) to rotate; The transverse movement structure (5) can drive the motor structure (4) and the pipeline detection structure (3) to move forward and backward, and the transverse movement structure (5) is installed on the equipment base (1); A hammer structure (6) is also provided on the side of the equipment base (1), and the hammer structure (6) is used to strike the carbon fiber tube (100).

2. The nondestructive testing device for a carbon fiber tube according to claim 1, characterized in that: The cleaning rod (31) is a hollow structure, and a cleaning plate (314) and a groove (313) are provided on the top of the cleaning drill bit (311), and the groove (313) is connected to the middle hole of the cleaning rod (31).

3. The nondestructive testing device for a carbon fiber tube according to claim 1, characterized in that: A guiding slope is provided between the cleaning drill bit (311) and the spiral sheet (312).

4. The nondestructive testing device for a carbon fiber tube according to claim 2, characterized in that: The cleaning plate (314) is provided with a cleaning pad.

5. The nondestructive testing device for a carbon fiber tube according to claim 1, characterized in that: The sleeve rod (32) is fixedly mounted on the cleaning rod (31); a holder (321) is provided at the front end of the sleeve rod (32); and an annular light strip (322) is provided on the holder (321).

6. The nondestructive testing device for a carbon fiber tube according to claim 1, characterized in that: The sleeve rod (32) is slidably connected in the guide sleeve (323), the guide sleeve (323) is slidably connected in the fixing frame (324), and the fixing frame (324) is fixedly mounted on the base (325).

7. The nondestructive testing device for a carbon fiber tube according to claim 1, characterized in that: The motor structure (4) comprises a motor 1 (41), a gear 1 (42), a gear 2 (43) and a protection frame (44); the motor 1 (41) is fixedly mounted on the outer side of the protection frame (44) and connected to the gear 1 (42) via a transmission shaft; the gear 2 (43) is meshed with the gear 1 (42) and fixedly connected to the cleaning rod (31); the rear end of the cleaning rod (31) is rotatably connected to the protection frame (44).

8. The nondestructive testing device for a carbon fiber tube according to claim 1, characterized in that: The transverse movement structure (5) comprises a second motor (51), a threaded rod (52), a threaded block (53), a guide shaft (54) and a guide shaft seat (55); the output shaft of the second motor (51) is connected to the threaded rod (52); both ends of the threaded rod (52) are rotatably connected to the support seat; the threaded block (53) is threadedly connected to the threaded rod (52); the guide shaft (54) is symmetrically arranged on both sides of the threaded rod (52); both ends of the guide shaft (54) are fixedly connected to the guide shaft seat (55); the protection frame (44) is fixedly installed on the threaded block (53); and both sides of the protection frame (44) are slidably connected to the guide shaft (54) through extension plates.

9. The nondestructive testing device for a carbon fiber tube according to claim 1, characterized in that: The hammer structure (6) includes an electromagnetic track (61), an electric push rod (62), a clamping block (63), a hammer rod (64) and a hammer head (65). The electromagnetic track (61) is installed in the equipment base (1). The electric push rod (62) is installed between the clamping block (63) and the sliding block (67) by means of a bolt inserted from the clamping block (63) and threadedly connected to the sliding block (67) on the electromagnetic track (61). The output shaft of the electric push rod (62) is connected to the tail of the hammer rod (64). The hammer rod (64) is rotatably connected to the rotating seat (68) via a rotating shaft. The bottom of the rotating seat (68) is connected to the clamping block (63). The hammer head (65) is connected to the head of the hammer rod (64).

10. A method for testing using the nondestructive testing device for a carbon fiber tube according to claims 1 to 9, characterized in that: The following steps are involved: S1. Pass the carbon fiber tube (100) through the pipe support (22) and fix one end by clamping the chuck (21); S2. The motor structure (4) is started to drive the cleaning rod (31) and the sleeve rod (32) to rotate, and the cleaning rod (31) is moved into the carbon fiber tube (100) through the transverse structure (5), and the inside of the tube is cleaned from one end to the other end through the cleaning rod (31); S3. During the process of S2, a water mist mixed with fluorescent liquid is sprayed into the tube through the groove (313) provided, and the water mist is evenly applied to the inner wall of the tube through the rotating spiral blade (312); S4. During the process of S3, the electromagnetic track (61) and the electric push rod (62) are simultaneously started, so that the hammer head (65) swings up and down to form a hammer, and the carbon fiber tube (100) is struck, and the water is diffused on the inner wall of the tube by vibration; S5. After the cleaning drill bit (311) of the cleaning rod (31) is moved out from the other end of the carbon fiber tube (100), the lateral movement structure (5) is controlled to move backward so that the cleaning drill bit (311) re-enters the tube and removes excess water through the cleaning plate (314); S6. Visually inspect the remaining water marks in the tube to determine whether there are any scratches, bruises or defects in the tube; S7. Re-clean, pack and package the carbon fiber tube (100).

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