Online strip surface ultrasonic flaw detection system

Abstract

The invention discloses an online strip surface ultrasonic flaw detection system which comprises a pre-wetting device used for supplying water, an ultrasonic detection device used for detecting a copper alloy strip and a pressing device used for applying pressure to the copper alloy strip, the ultrasonic detection device comprises an ultrasonic probe, and a water supply channel allowing water to pass through is arranged in the ultrasonic probe. The pre-wetting device is connected with the water supply channel. According to the online strip surface ultrasonic flaw detection system, nondestructive detection of the copper alloy strip can be achieved, and the detection work efficiency of the copper alloy strip is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of strip material detection equipment, and in particular, relates to an online strip surface ultrasonic flaw detection system. Background Art

[0002] Copper alloy strips have excellent process performance and have been widely used in the field of electronic component assembly. High-quality copper alloy strips have very high quality requirements. The pores and inclusions generated in the casting process of copper alloy blanks can be detected by visual cameras, but the delamination defects inside the strip cannot be detected.

[0003] At present, in the field of metal nondestructive testing, the nondestructive testing equipment used mainly adopts ultrasonic testing technology, which is applied to the detection of special-shaped copper welded parts. Its working principle is to determine defects by the size of the energy reflected by ultrasonic waves at the interface of two media with different acoustic impedances and the difference in impedance generated by the media on both sides of the interface.

[0004] Existing copper alloy flaw detection is mainly used for welding parts, inspection and detection of copper pipes. The traditional analog ultrasonic flaw detection system has the disadvantage of slow detection speed. It can no longer meet the requirements of the existing new non-destructive testing standards in terms of flaw detection speed and flaw detection stability.

[0005] Chinese patent application number 202022949290.8 discloses a flaw detector for production inspection of copper alloy forgings, including a main body, a display screen is provided on the surface of the main body, and an operation area is provided at the bottom of the display screen corresponding to the surface of the main body, an operation button is provided on the side of the operation area corresponding to the surface of the main body, a protective cover is provided on the side of the main body, a placement groove is provided on the rear surface of the main body, and a support seat is provided on the inner side of the placement groove, one end of the support seat is connected to the placement groove by a rotating shaft, and a movable groove is provided at the intersection of the other end of the support seat and the main body, a movable block is provided on the inner side of the movable groove, and a movable rod passes through the end of the movable block and the movable groove provided on the surface of the main body; through the designed movable groove, movable block, protrusion, movable rod and torsion spring, the support seat is limited by the structure when not in use, thereby increasing the convenience of use.

[0006] It is hoped to provide an online strip surface ultrasonic flaw detection system, particularly with regard to how to achieve non-destructive testing of copper alloy strips. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an online strip surface ultrasonic flaw detection system, the purpose of which is to achieve non-destructive testing of copper alloy strips.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an online strip surface ultrasonic flaw detection system, including a pre-wetting device for water supply, an ultrasonic detection device for detecting the copper alloy strip and a clamping device for applying pressure to the copper alloy strip, the ultrasonic detection device includes an ultrasonic probe, a water supply channel for water to pass through is arranged in the ultrasonic probe, and the pre-wetting device is connected to the water supply channel.

[0009] The ultrasonic detection device is connected to a lifting device, and the lifting device is configured to adjust the height of the ultrasonic detection device.

[0010] The lifting device comprises a first actuator, and the first actuator is connected to the ultrasonic probe.

[0011] The lifting device also includes a translation plate and a translation mechanism connected to the translation plate and used to control the translation plate to move linearly in a horizontal direction. The first actuator is arranged on the translation plate.

[0012] The translation mechanism comprises a driving motor and a transmission mechanism connected to the driving motor, and the transmission mechanism is connected to the translation plate.

[0013] The pre-wetting device includes a first water tank (top water tank) and a second water tank (circulating filtration water tank). The second water tank is located on the side of the ultrasonic detection device, and the detection coupling liquid is filtered and precipitated through the second water tank. The first water tank is located on the top of the ultrasonic detection device and is connected to the second water tank through the water supply channel to generate a stable flow of coupling liquid.

[0014] The clamping device comprises a clamping roller and a second actuator connected to the clamping roller and used for controlling the lifting and lowering of the clamping roller. The clamping roller is configured to contact the upper surface of the copper alloy strip.

[0015] Two pressing rollers are provided, and the ultrasonic detection device is located between the two pressing rollers.

[0016] A plurality of rollers are arranged below the copper alloy strip, and the rollers are arranged to contact with the lower surface of the copper alloy strip.

[0017] The online strip surface ultrasonic flaw detection system also includes a drying device for removing water from the surface of the copper alloy strip.

[0018] The online strip surface ultrasonic flaw detection system of the present invention can realize non-destructive testing of copper alloy strips and improve the detection efficiency of copper alloy strips; by performing non-destructive testing on copper alloy strips, problematic defects such as inclusions, pores, and delamination are located and marked, and copper alloy strips that meet the requirements are selected for subsequent production and rolling, so as to reduce production costs and avoid the outflow of defective materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] This specification includes the following drawings, which show the following contents:

[0020] Figure 1 It is a schematic diagram of the connection between the ultrasonic detection device and the pre-wetting device;

[0021] Figure 2 is a schematic diagram of the structure of the clamping device;

[0022] Figure 3 It is a schematic diagram of the connection between the ultrasonic detection device and the lifting device;

[0023] Figure 4 It is a schematic diagram of the structure of the electronic control system;

[0024] The markings in the figure are: 1. ultrasonic probe; 2. first actuator; 3. translation plate; 4. transmission mechanism; 5. first water tank; 6. second water tank; 7. pressure roller; 8. second actuator; 9. roller; 10. copper alloy strip; 11. frame. DETAILED DESCRIPTION

[0025] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

[0026] It should be noted that, in the following embodiments, the “first” and “second” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequential order of execution, but are merely for the convenience of description.

[0027] like Figures 1 to 3 As shown, the present invention provides an online strip surface ultrasonic flaw detection system, including an electronic control system, a frame 11, a pre-wetting device for supplying water, an ultrasonic detection device for detecting the copper alloy strip and a clamping device for applying pressure to the copper alloy strip, the ultrasonic detection device includes an ultrasonic probe 1, a water supply channel for water to pass through is arranged in the ultrasonic probe 1, and the pre-wetting device is connected to the water supply channel.

[0028] Specifically, if Figure 1 and Figure 2As shown, the copper alloy strip is transported in the horizontal direction, and the transport direction of the copper alloy strip is parallel to the first direction. A plurality of ultrasonic probes 1 are provided, and the ultrasonic probes 1 are located above the copper alloy strip. All ultrasonic probes 1 are located on the same straight line parallel to the second direction. All ultrasonic probes 1 are equidistantly distributed, and various parts of the copper alloy strip are detected. The first direction and the second direction are both horizontal directions and the first direction and the second direction are perpendicular to each other. The width direction of the copper alloy strip is parallel to the second direction. The pre-wetting device includes a first water tank 5, which is fixedly mounted on the frame 11. The first water tank 5 is located above the ultrasonic detection device. The first water tank 5 is connected to the water supply channel on each ultrasonic probe 1. The first water tank 5 is used to supply water to the water supply channel. When the detection device 1 starts to detect, the detection device 1 contacts the surface of the material 10, and water is guided to the upper surface of the copper alloy strip below through the water supply channel inside the detection probe.

[0029] Ultrasonic detection requires coupling between the material and the ultrasonic probe 1 with a medium (water) to facilitate the transmission and sampling of ultrasound. A first water tank 5 is set on the top of the frame 11. First, it is used to store medium water. Second, it forms a water pressure difference to pre-wet the surface of the copper alloy strip and improve the coupling between the probe and the plate surface. Third, it may play a static defoaming role to prevent the influence of bubbles in the medium on the echo.

[0030] like Figure 1 As shown, the pre-wetting device further includes a second water tank 6. A water pump disposed in the second water tank 6 is connected to the first water tank 5. The water pump pumps the water in the second water tank 6 to the first water tank 5. The ultrasonic probe 1 includes a water supply channel, which is connected to the first water tank 5 through the main water supply pipe to ensure that the coupling water in the first water tank 5 is evenly supplied to each ultrasonic probe 1.

[0031] The first water tank is a top water tank, and the second water tank is a circulating filtration water tank. The second water tank is located on the side of the ultrasonic detection device, and the detection coupling liquid is filtered and precipitated through the second water tank. The first water tank is located on the top of the ultrasonic detection device and is connected to the second water tank through the water supply channel to generate a stable flow of coupling liquid.

[0032] like Figure 1 and Figure 3As shown, the ultrasonic detection device is connected to a lifting device, and the lifting device is configured to adjust the height of the ultrasonic detection device. The lifting device includes a first actuator 2, which is connected to an ultrasonic probe 1. The number of the first actuators 2 is the same as the number of the ultrasonic probes 1. Each first actuator 2 is connected to an ultrasonic probe 1. The first actuator 2 is a retractable component, such as a cylinder, a hydraulic cylinder or an electric cylinder. The height of the ultrasonic probe 1 is adjusted by the extension and retraction of the first actuator 2, and the ultrasonic probe 1 is controlled to contact and separate from the upper surface of the copper alloy strip. During detection, the first actuator 2 extends to push the ultrasonic probe 1 downward until the ultrasonic probe 1 contacts the upper surface of the copper alloy strip.

[0033] like Figure 1 and Figure 3 As shown, the lifting device also includes a translation plate 3 and a translation mechanism connected to the translation plate 3 and used to control the translation plate 3 to move linearly in the horizontal direction. The first actuator 2 is fixedly arranged on the translation plate 3. The translation mechanism is used to realize the linear movement of the ultrasonic probe 1 along the second direction and control the ultrasonic probe 1 to move between the detection position and the debugging position. The rack 11 is located in the main detection area, and a debugging platform is provided on the side of the main detection area. During debugging, the ultrasonic probe 1 is moved to the debugging position of the debugging area, and the sensitivity of the ultrasonic probe 1 is adjusted to an appropriate Db value at the debugging position for daily detection element calibration and calibration.

[0034] like Figure 3 As shown, in this embodiment, the translation mechanism includes a driving motor and a transmission mechanism 4 connected to the driving motor, and the transmission mechanism 4 is connected to the translation plate 3. The transmission mechanism 4 is a screw-nut mechanism. The motor shaft of the driving motor is connected to the screw of the screw-nut mechanism, and the nut of the screw-nut mechanism is connected to the translation plate 3. After the driving motor is running, the translation plate 3 is driven by the transmission mechanism 4 to move linearly, so as to adjust the position of the ultrasonic probe 1.

[0035] like Figure 2 As shown, the clamping device includes a clamping roller 7 and a second actuator 8 connected to the clamping roller 7 and used to control the lifting of the clamping roller 7. The clamping roller 7 is configured to contact the upper surface of the copper alloy strip. The second actuator 8 is a retractable component, such as a cylinder, a hydraulic cylinder or an electric cylinder. The height of the clamping roller 7 is adjusted by the extension and retraction of the second actuator 8 to control the contact and separation of the clamping roller 7 with the upper surface of the copper alloy strip. During detection, the second actuator 8 extends and pushes the clamping roller 7 to move downward until the clamping roller 7 contacts the upper surface of the copper alloy strip, applying a certain pressure to the copper alloy strip. The second actuator 8 is vertically arranged, the upper end of the second actuator 8 is connected to the frame 11, the lower end of the second actuator 8 is connected to the clamping bracket, the clamping roller 7 is rotatably arranged on the clamping bracket, and the axis of the clamping roller 7 is parallel to the second direction.

[0036] like Figure 2 As shown, in this embodiment, two clamping rollers 7 are provided, and the two clamping rollers 7 are located on the same straight line parallel to the first direction, and the ultrasonic detection device is located between the two clamping rollers 7. Two clamping rollers 7 are provided in front and behind the frame 11 to control the stability of the copper alloy strip during the conveying process, which helps to improve the accuracy of the detection result. The movement of the copper alloy strip does not need to be stopped during the whole process, and the continuous online detection of the copper alloy strip is realized. When the front end of the strip passes through, the limit induction switch is used to lift the clamping mechanism, and when the front end of the strip passes through the position of the rear pressure wheel mechanism, the clamping mechanism is pressed down.

[0037] like Figure 2 As shown, a roller 9 is arranged below the copper alloy strip. The roller 9 is rotatably arranged on the frame 11. A plurality of rollers 9 are arranged. All rollers 9 are located on the same straight line parallel to the first direction. The roller 9 is arranged to contact the lower surface of the copper alloy strip. The axis of the roller 9 is parallel to the second direction. The roller 9 is located below the ultrasonic probe 1. The roller 9 provides support for the copper alloy strip to improve the stability of the strip during transportation.

[0038] Preferably, the online strip surface ultrasonic flaw detection system of the present invention also includes a drying device for removing water from the surface of the copper alloy strip. The drying device is used to remove water from the surface of the copper alloy strip after the ultrasonic probe 1 completes the detection. In the traveling direction of the copper alloy strip, the drying device is located behind the ultrasonic probe 1. The drying device mainly includes an upper air knife and a lower air knife. The upper air knife and the lower air knife are arranged on the frame 11. The upper air knife is located above the lower air knife. A channel is formed between the upper air knife and the lower air knife for the copper alloy strip to pass through. The main function of the upper air knife is to blow out a strong airflow downward to form an air curtain, which helps to blow away the moisture on the upper surface of the strip and ensure the dryness of the strip surface. The main function of the lower air knife is to blow out a strong airflow upward to form an air curtain, which helps to blow away the moisture on the lower surface of the strip and ensure the dryness of the strip surface.

[0039] like Figure 4 As shown, the electronic control system includes a host computer, which is connected to the ultrasonic probe 1. The host computer is responsible for ultrasonic acquisition, processing and analysis. The equipment layer is controlled by the industrial PLC to move and position the probe. The rise and fall of the probe system is controlled according to the automatic, manual and length counting signals on site. At the same time, it cooperates with the ultrasonic display system to finally provide an ultrasonic image of the entire volume of data.

[0040] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. Online belt surface ultrasonic flaw detection system, characterized by: It includes a pre-wetting device for supplying water, an ultrasonic detection device for detecting the copper alloy strip and a pressing device for applying pressure to the copper alloy strip. The ultrasonic detection device includes an ultrasonic probe. A water supply channel for water to pass through is arranged in the ultrasonic probe. The pre-wetting device is connected to the water supply channel.

2. The online belt surface ultrasonic flaw detection system according to claim 1 is characterized in that: The ultrasonic detection device is connected to a lifting device, and the lifting device is configured to adjust the height of the ultrasonic detection device.

3. The online belt surface ultrasonic flaw detection system according to claim 2 is characterized in that: The lifting device comprises a first actuator, and the first actuator is connected to the ultrasonic probe.

4. The online belt surface ultrasonic flaw detection system according to claim 3 is characterized in that: The lifting device also includes a translation plate and a translation mechanism connected to the translation plate and used to control the translation plate to move linearly in a horizontal direction. The first actuator is arranged on the translation plate.

5. The online strip surface ultrasonic flaw detection system according to claim 4 is characterized in that: The translation mechanism comprises a driving motor and a transmission mechanism connected to the driving motor, and the transmission mechanism is connected to the translation plate.

6. The online strip surface ultrasonic flaw detection system according to any one of claims 1 to 5, characterized in that: The pre-wetting device comprises a first water tank and a second water tank. The first water tank is located on the side ground of the ultrasonic detection device, and the second water tank is located on the top of the ultrasonic detection device. The first water tank and the second water tank are connected to the water supply channel.

7. The online strip surface ultrasonic flaw detection system according to any one of claims 1 to 5, characterized in that: The clamping device comprises a clamping roller and a second actuator connected to the clamping roller and used for controlling the lifting and lowering of the clamping roller. The clamping roller is configured to contact the upper surface of the copper alloy strip.

8. The online strip surface ultrasonic flaw detection system according to claim 7 is characterized in that: Two pressing rollers are provided, and the ultrasonic detection device is located between the two pressing rollers.

9. The online strip surface ultrasonic flaw detection system according to claim 8 is characterized in that: A plurality of rollers are arranged below the copper alloy strip, and the rollers are arranged to contact with the lower surface of the copper alloy strip.

10. The online strip surface ultrasonic flaw detection system according to any one of claims 1 to 9, characterized in that: The invention also comprises a drying device for removing water from the surface of the copper alloy strip.

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