Aluminum alloy residual stress nondestructive testing equipment and method

Abstract

The present application relates to the field of stress detection technology, and in particular to a non-destructive detection device and method for residual stress in aluminum alloys, which includes a transmission mechanism for transmitting aluminum alloy profiles, a detector for detecting residual stress, and a control mechanism for controlling the position of the detector, wherein the transmission mechanism includes a transmission bracket, a plurality of transmission rollers rotatably connected to the transmission bracket, and a transmission drive for simultaneously driving the plurality of transmission rollers to rotate, wherein the plurality of transmission rollers are parallel to each other, the control mechanism includes an X-axis slide and a Z-axis slide fixedly connected to the sliding end of the X-axis slide, the X-axis slide is arranged on the transmission bracket, and the sliding path of the sliding end of the X-axis slide is located above the plurality of transmission rollers, the detector is arranged at the sliding end of the Z-axis slide, and the sliding path of the sliding end of the X-axis slide is parallel to the transmission roller. The present application can relatively comprehensively and conveniently perform residual stress detection on aluminum alloy profiles.

Description

Technical Field

[0001] The present application relates to the field of stress detection technology, and in particular to a non-destructive detection device and method for residual stress in aluminum alloys. Background Art

[0002] Residual stress is the self-balanced internal stress that remains within an object after external forces or uneven temperature fields have been eliminated. Machining and strengthening processes, such as cold drawing, bending, cutting, extrusion, casting, and forging, can all generate residual stress. The production of aluminum alloy profiles currently primarily involves melting the metal into round bars, which are then extruded through a mold using an extruder into the desired profile. Finally, surface anti-corrosion treatment is performed to complete the production of the aluminum alloy profile.

[0003] However, because aluminum alloys are extruded from round cast bars during the extrusion process, residual stresses can occur in aluminum alloy profiles due to uneven temperatures in the plastic deformation zone and uneven flow within the round cast bars. This residual stress can lead to slow deformation, cracks, and even breakage during use. Therefore, residual stress testing is necessary during aluminum alloy profile production to minimize the risk of substandard products with excessive residual stress entering the market.

[0004] In the existing technology, residual stress detection mainly adopts the blind hole method or vibrating wire strain gauge for detection. However, the use of blind holes will damage the aluminum alloy profiles, and the use of strain gauges requires a long cycle and installation of the strain gauges. Therefore, the existing residual stress detection mainly adopts non-destructive stress detection methods.

[0005] Existing non-destructive stress testing methods primarily include magnetic testing, pulsed eddy current testing, X-ray testing, and ultrasonic testing. Currently, X-ray and ultrasonic testing methods are primarily used for aluminum alloy profiles. For example, residual stress is detected using an X-ray residual stress analyzer or an ultrasonic residual stress detector. However, due to the relatively long length of aluminum alloy profiles, X-ray residual stress analyzers or ultrasonic residual stress detectors are often used for residual stress testing. To optimize production efficiency, these instruments are often used to perform testing at specific points within the profile. This results in a large number of blind spots where residual stress is not detected, resulting in relatively low accuracy in residual stress detection. Summary of the Invention

[0006] In order to perform relatively convenient and comprehensive residual stress detection of aluminum alloy profiles, the present application provides an aluminum alloy residual stress non-destructive detection device and method.

[0007] This application provides an aluminum alloy residual stress non-destructive testing device and method, which adopts the following technical solutions:

[0008] In a first aspect, the present application provides an aluminum alloy residual stress non-destructive testing device, which adopts the following technical solution:

[0009] A non-destructive testing device for residual stress in aluminum alloys, comprising a transmission mechanism for transmitting aluminum alloy profiles, a detector for detecting residual stress, and a control mechanism for controlling the position of the detector, wherein the transmission mechanism comprises a transmission bracket, a plurality of transmission rollers rotatably connected to the transmission bracket, and a transmission drive member for simultaneously driving the plurality of transmission rollers to rotate, wherein the plurality of transmission rollers are parallel to each other, the control mechanism comprises an X-axis sliding member and a Z-axis sliding member fixedly connected to the sliding end of the X-axis sliding member, the X-axis sliding member being arranged on the transmission bracket, and the sliding path of the sliding end of the X-axis sliding member being located above the plurality of transmission rollers, the detector being arranged at the sliding end of the Z-axis sliding member, and the sliding path of the sliding end of the X-axis sliding member being parallel to the transmission roller.

[0010] By adopting the above technical solution, when inspecting aluminum alloy profiles, it is only necessary to place the aluminum alloy profiles on multiple transmission rollers, and then control the detection end of the detector to be located above the aluminum alloy profile through the X-axis sliding member and the Z-axis sliding member, and drive multiple transmission rollers to rotate simultaneously through the transmission driving member, so that the detection area can be set in all directions for the aluminum alloy profile to complete a relatively comprehensive inspection; at the same time, when performing residual stress detection, a step-by-step method can be adopted to obtain a relatively comprehensive residual stress distribution diagram of the aluminum alloy profile. Compared with the use of portable detectors or trolley-driven detectors for detection, it is more suitable for large-scale aluminum alloy residual stress detection.

[0011] Optionally, the transmission drive component includes a drive motor, multiple transmission chains and multiple transmission sprockets. Two transmission sprockets and two transmission chains are coaxially fixedly connected to the same transmission roller. The transmission chain is externally mounted on the transmission sprockets of two adjacent transmission rollers. The output end of the drive motor is connected to any one of the transmission rollers or transmission sprockets.

[0012] By adopting the above technical solution, when residual stress detection is required, it is only necessary to drive the motor to drive one of the transmission sprockets to rotate, and through the transmission sprocket and the transmission chain, drive the other transmission sprockets to rotate synchronously in turn, thereby achieving the same direction rotation of multiple transmission rollers at the same time.

[0013] Optionally, the transmission bracket is further provided with a discharge mechanism for discharging unqualified aluminum alloy profiles and a waste receiving mechanism for receiving the aluminum alloy profiles discharged by the discharge mechanism, and the discharge mechanism is located between the waste receiving mechanism and the plurality of transmission rollers.

[0014] By adopting the above technical solution, during the residual stress detection, some aluminum alloy profiles may have excessive residual stress and become unqualified products. At this time, if there are unqualified aluminum alloy profiles, the unqualified aluminum alloy profiles only need to be unloaded by the unloading mechanism and received by the waste receiving mechanism.

[0015] Optionally, the unloading mechanism includes a unloading bracket, a plurality of unloading parts and a unloading lifting part for controlling the vertical lifting of the unloading bracket. The unloading bracket is slidingly connected to the transmission bracket through the unloading lifting part. The unloading part includes a plurality of unloading pulleys rotatably connected to the unloading bracket and a unloading belt outermostly wrapped around a plurality of unloading pulleys. The rotation plane of the unloading belt is parallel to the transmission roller, and the vertical lifting path of the unloading belt is located between two adjacent transmission rollers. The two ends of the transmission direction of the unloading belt are respectively located at the receiving end of the transmission roller and the waste receiving mechanism. The unloading bracket is provided with a unloading driving part for driving the unloading belt to rotate for transmission.

[0016] By adopting the above technical solution, when unqualified aluminum alloy profiles are detected, it is only necessary to control the unloading lifting part to control the unloading bracket to rise, so that the unqualified aluminum alloy profiles are placed on several unloading belts, and then the unloading driving part drives the unloading belts to rotate and transfers the unqualified aluminum alloy profiles to the receiving end of the waste receiving mechanism, and then the unloading bracket moves down, so that the aluminum alloy profiles are placed on the receiving end of the waste receiving mechanism. This can relatively conveniently carry out residual stress detection of large quantities of aluminum alloy profiles while reducing the possibility of unqualified aluminum alloy profiles mixing into qualified aluminum alloy profiles.

[0017] Optionally, the unloading bracket includes a unloading bottom plate and a unloading top plate located below a plurality of transmission rollers, the unloading bottom plate is a U-shaped plate structure and is set with an upper opening, the unloading top plate is fixedly connected to the opening edge of the unloading bottom plate, the upper plate surface of the unloading top plate is fixedly connected to the unloading mounting plate, the unloading pulley is rotatably connected to the unloading mounting plate, and the unloading top plate is connected to the transmission bracket through a unloading lifting member.

[0018] By adopting the above technical solution, the unloading pulley is fixedly connected to the unloading top plate through the unloading mounting plate, and is vertically slidably connected to the transmission bracket through the unloading bottom plate, so as to realize the synchronous control of the vertical lifting of multiple unloading belts. At the same time, the unloading lifting component is connected to the unloading top plate, which can also reduce the space occupied by the unloading lifting component.

[0019] Optionally, the unloading bracket is fixedly connected with a plurality of unloading support plates for supporting the unloading belt.

[0020] By adopting the above technical solution, since the aluminum alloy profile needs to be placed on the unloading belt, it is easy for the unloading belt to be concave when the position where the aluminum alloy profile is placed is between two adjacent unloading pulleys. At this time, the unloading support plate can support the unloading belt, effectively reducing the concave state of the unloading belt when transporting the aluminum alloy profile, causing the aluminum alloy profile to be placed on the transmission roller and unable to be transported.

[0021] Optionally, the unloading drive component includes a unloading motor, a unloading drive shaft rotatably connected to the unloading bracket and several unloading drive pulleys coaxially connected to the unloading drive shaft, the unloading belt is outermost of the unloading drive pulley, and the output shaft of the unloading motor is connected to the unloading drive shaft.

[0022] By adopting the above technical solution, when unqualified aluminum alloy needs to be transferred to a scrap receiving mechanism, it is only necessary to drive the unloading drive shaft to rotate by the unloading motor, and then drive the unloading belt to rotate by the unloading drive pulley.

[0023] Optionally, the unloading lifting member is a hydraulic cylinder and two or more are provided. The unloading lifting member is installed on the transmission bracket, and the lifting end of the unloading lifting member is connected to the unloading bracket. The transmission bracket is provided with a guide member for guiding the lifting and lowering of the unloading bracket.

[0024] By adopting the above technical solution, when the unloading lifting member controls the unloading bracket to lift, it can be guided by the guide member, thereby reducing the possibility that the unloading bracket will tilt and interfere with the transmission roller during the lifting process.

[0025] Optionally, the scrap receiving mechanism includes a scrap receiving bracket arranged on the transmission bracket and a number of receiving support plates for receiving unqualified aluminum profiles, the receiving support plates are arranged at an angle and fixedly connected to the scrap receiving bracket, the high end of the receiving support plates are arranged toward the transmission roller and are staggered with the unloading belt, and the feeding end of the unloading belt is located on the side of the aluminum alloy profile on the transmission path of the transmission roller, and the transmission bracket is provided with a pushing member for pushing the unqualified aluminum alloy profile to above the feeding end of the unloading belt.

[0026] By adopting the above technical solution, when receiving unqualified aluminum alloy profiles, when the aluminum alloy profiles are transferred to the discharge end of the unloading belt, the unloading belt moves downward, so that the aluminum alloy profiles can be placed on multiple receiving support plates, and then slide to the bottom of the receiving support plates under the action of gravity for temporary storage, thereby reducing the impact of unqualified aluminum alloy profiles on subsequent residual stress detection of aluminum alloy profiles.

[0027] In a second aspect, the present application provides a method for non-destructive testing of residual stress in aluminum alloys, which adopts the following technical solution:

[0028] A nondestructive detection method for residual stress in aluminum alloys comprises the following steps: S1, sample detection: placing a standard aluminum alloy profile sample on a plurality of transmission rollers, and detecting the standard aluminum alloy profile sample using a detector to form a standard stress distribution diagram, and setting a stress error range X based on the standard stress distribution diagram.

[0029] S2. Positioning: Place the aluminum alloy profile to be inspected above multiple transmission rollers, and then adjust the position of the detector through the X-axis slide and the Z-axis slide so that the detector is aligned with the aluminum alloy profile.

[0030] S3. Residual stress detection: Multiple transmission rollers are driven by transmission drive components and perform step transmission, so that the detector can detect the residual stress of the aluminum alloy profile in different areas and form a stress distribution diagram.

[0031] S4. Stress analysis: By comparing the residual stress distribution diagram of the tested aluminum alloy with the standard stress distribution diagram, if the stress of the residual stress distribution diagram is within the error range X of the standard stress distribution diagram, the residual stress of the tested aluminum alloy profile is qualified; if it exceeds the error range X of the standard stress distribution diagram, the tested aluminum alloy profile is unqualified.

[0032] By adopting the above technical solution, it is possible to realize the detection of residual stress of multiple batches of aluminum alloy profiles, and in the process of residual stress detection of aluminum alloy profiles, detection can be performed at various positions of the aluminum alloy profiles, so that residual stress detection of aluminum alloy profiles can be carried out relatively conveniently and comprehensively.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] When testing aluminum alloy profiles, it is only necessary to place the aluminum alloy profiles on multiple transmission rollers, and then control the detection end of the detector to be located above the aluminum alloy profile through the X-axis sliding member and the Z-axis sliding member, and drive multiple transmission rollers to rotate simultaneously through the transmission drive member, so that the detection area can be set in all directions for the aluminum alloy profile to complete a relatively comprehensive detection; at the same time, when performing residual stress detection, a step-by-step method can be used to obtain a relatively comprehensive residual stress distribution diagram of the aluminum alloy profile. Compared with the use of portable detectors or trolley-driven detectors for detection, it is more suitable for large-scale aluminum alloy residual stress detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a first structural diagram of an embodiment of the present application.

[0036] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part A.

[0037] Figure 3 It is a schematic diagram of the installation structure of the unloading mechanism in the embodiment of the present application.

[0038] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the unloading mechanism in the embodiment of the present application.

[0039] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure along the BB line.

[0040] Figure 6 This is a second structural diagram of an embodiment of the present application.

[0041] Figure 7 It is a flow chart of the detection method in the embodiment of the present application.

[0042] Explanation of the accompanying symbols: 1. Transmission mechanism; 11. Transmission bracket; 12. Transmission roller; 13. Transmission drive member; 131. Drive motor; 132. Transmission chain; 133. Transmission sprocket; 134. Drive sprocket; 135. Drive chain; 14. Push member; 141. Push plate; 2. Detector; 3. Control mechanism; 31. X-axis sliding member; 311. Support column; 32. Z-axis sliding member; 4. Unloading mechanism; 41. Unloading bracket; 411. Unloading bottom plate; 412. Unloading top plate; 413. Unloading mounting plate; 414. Unloading support plate; 415. Unloading reinforcement Plate; 416, unloading rib; 42, unloading part; 421, unloading pulley; 422, unloading belt; 43, unloading lifting part; 44, unloading driving part; 441, unloading motor; 442, unloading driving shaft; 443, unloading driving pulley; 444, unloading sprocket; 445, unloading chain; 45, guide part; 451, guide top seat; 452, guide base; 453, guide rod; 5, waste receiving mechanism; 51, waste receiving bracket; 511, receiving support rod; 52, receiving support plate; 521, baffle; 522, control hydraulic cylinder; 53, waste receiving hydraulic cylinder. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1 -Attached Figure 7 This application is described in further detail.

[0044] The present application discloses a non-destructive testing device for residual stress in aluminum alloy. Figure 1 The testing device includes a transmission mechanism 1, a detector 2, and a control mechanism 3 for controlling the position of the detector 2. The transmission mechanism 1 is used to transmit the aluminum alloy profile to the bottom of the detection end of the detector 2 to facilitate residual stress testing of the aluminum alloy profile; the detector 2 is used to perform residual stress testing on the aluminum alloy profile, and is preferably an ultrasonic stress detector or an X-ray residual stress analyzer; in the embodiment of the present application, the ultrasonic residual stress detector is used.

[0045] Reference Figure 1 The transmission mechanism 1 includes a transmission bracket 11, a plurality of transmission rollers 12 rotatably connected to the transmission bracket 11, and a transmission drive 13 for simultaneously driving the plurality of transmission rollers 12 to rotate. The transmission rollers 12 are arranged horizontally, parallel to each other, and arranged horizontally along a direction perpendicular to the length of the transmission rollers 12. A control mechanism 3 is disposed on the transmission bracket 11, with a control end of the control mechanism 3 located above the plurality of transmission rollers 12. The detector 2 is fixedly connected to the control end of the control mechanism 3.

[0046] Reference Figure 1 and Figure 2 The transmission drive component 13 includes a drive motor 131, multiple transmission chains 132, and multiple transmission sprockets 133. The transmission chains 132 and transmission sprockets 133 are both arranged on the same side of the multiple transmission rollers 12. Two transmission sprockets 133 are coaxially fixedly connected to one end of the same transmission roller 12. The two transmission sprockets 133 on the same transmission roller 12 are each sleeved with a transmission chain 132, and the two transmission chains 132 corresponding to the same transmission roller 12 are respectively sleeved on the transmission sprockets 133 on two adjacent transmission rollers 12. Among them, the output end of the drive motor 131 is connected to any one of the transmission rollers 12 or the transmission sprockets 133 to drive the multiple transmission rollers 12 to rotate simultaneously and transmit the aluminum alloy profiles.

[0047] Reference Figure 1 and Figure 2 Specifically, the driving motor 131 is installed on the transmission bracket 11, and the output shaft of the driving motor 131 is coaxially fixedly connected to the driving sprocket 134. The driving sprocket 134 is provided with a driving chain 135, and the driving chain 135 is also provided on any transmission sprocket 133 that is not provided with the transmission chain 132, so as to drive the transmission sprocket 133 to rotate.

[0048] When in use, it is only necessary to place the aluminum alloy profile to be tested on multiple transmission rollers 12, and then the control mechanism 3 controls the detection end of the detector 2 to align with the aluminum alloy profile to be tested; thereafter, the driving motor 131 drives the transmission sprocket 133 of the outer shell of the driving chain 135 to rotate through the driving chain 135, and then through the transmission chain 132, the transmission sprockets 133 of the multiple transmission rollers 12 are driven to each other through the transmission chain 132, so as to realize step-by-step or continuous driving of the aluminum alloy profile to slide along the distribution direction of the multiple transmission rollers 12, so as to realize all-round residual stress detection of the aluminum alloy profile.

[0049] Of course, in other embodiments, the output shaft of the driving motor 131 may be directly connected to any one of the transmission rollers 12 through a coupling.

[0050] Reference Figure 1 and Figure 2 The control mechanism 3 includes an X-axis slide 31 and a Z-axis slide 32. The X-axis slide 31 is fixedly connected to the transmission bracket 11 via a support column 311 and is located above the multiple transmission rollers 12. The Z-axis slide 32 is fixedly connected to the sliding end of the X-axis slide 31, and the detection end of the detector 2 is fixedly connected to the sliding end of the Z-axis slide 32. The X-axis is parallel to the axial direction of the transmission roller 12, and the Z-axis is vertical. These control mechanisms are used to control the axial and vertical sliding of the detection end of the detector 2 above the transmission roller 12, allowing the detection end of the detector 2 to be adaptively adjusted according to the position of the aluminum alloy profile.

[0051] In addition, since residual stress comparison is performed after residual stress detection, unqualified aluminum alloy profiles may be present in the tested aluminum alloy profiles. If the unqualified aluminum alloy profiles are directly discharged, unqualified aluminum alloy profiles will be mixed with qualified aluminum alloy profiles. Therefore, the transmission bracket 11 is also provided with a discharge mechanism 4 and a waste receiving mechanism 5, which are used to promptly transfer unqualified aluminum alloy profiles to the waste receiving mechanism 5 for placement, thereby reducing the possibility of unqualified aluminum alloy profiles being mixed with qualified aluminum alloy profiles, thereby achieving a relatively convenient all-round detection of aluminum alloy profiles while reducing the possibility of unqualified aluminum alloy profiles being mixed with qualified aluminum alloy profiles, and facilitating the disposal of unqualified aluminum alloy profiles.

[0052] Reference Figure 1 and Figure 3 Specifically, at least one unloading mechanism 4 is provided. In the embodiment of the present application, two unloading mechanisms 4 are provided, and the two unloading mechanisms 4 are distributed along the distribution direction of the multiple conveying rollers 12 to facilitate the stable conveyance of unqualified aluminum alloy profiles to the receiving end of the scrap receiving mechanism 5. The unloading mechanism 4 includes a unloading bracket 41, a plurality of unloading members 42, and an unloading lifting member 43 for controlling the vertical lifting of the unloading bracket 41.

[0053] The unloading bracket 41 includes a unloading base plate 411 and a unloading top plate 412. The unloading base plate 411 is a U-shaped plate structure with an upper opening. The two side plates of the unloading base plate 411 are arranged parallel to the conveying roller 12. The unloading top plate 412 is fixedly connected to the upper opening edge of the unloading base plate 411, and the lifting end of the unloading lifting member 43 is fixedly connected to the unloading top plate 412. This is used to drive the unloading base plate 411 and the unloading top plate 412 to rise and fall vertically, while reducing the space occupied by the unloading driving member 44.

[0054] Reference Figure 1 and Figure 3The unloading member 42 includes a plurality of unloading pulleys 421 and a unloading belt 422 that is externally mounted on the plurality of unloading pulleys 421. The upper surface of the unloading top plate 412 is fixedly connected to a plurality of unloading mounting plates 413 that are arranged corresponding to the unloading pulleys 421. The unloading mounting plates 413 are L-shaped plate structures, and the horizontal portion of the unloading mounting plates 413 is fixedly connected to the unloading top plate 412 by bolts. The vertical portion of the unloading mounting plates 413 is vertically arranged and parallel to the transmission rollers 12. The unloading pulleys 421 are rotatably connected to the vertical portion of the unloading mounting plates 413 in a one-to-one correspondence, and the vertical lifting path of the vertical portion of the unloading mounting plates 413 is located in the gap between the transmission rollers 12.

[0055] The unloading top plate 412, on one side away from the conveyor chain 132, protrudes in a direction away from the conveyor chain 132 and is formed with a plurality of unloading reinforcement plates 415. These plates 415 are positioned one for each unloading belt 422. A portion of the unloading mounting plate 413 is fixedly connected to the unloading reinforcement plates 415, allowing the end of the unloading belt 422 away from the conveyor chain 132 to extend to the receiving end of the scrap receiving mechanism 5. Unloading ribs 416 are fixedly connected to the unloading bottom plate 411 to support the unloading reinforcement plates 415 and reduce the possibility of bending of the unloading reinforcement plates 415 during the transportation of aluminum alloy profiles.

[0056] Reference Figure 3 and Figure 4 The rotation plane of the discharge belt 422 is vertically arranged and parallel to the conveyor roller 12, and the discharge drive member 44 is disposed at the bottom of the discharge belt 422. The discharge drive member 44 includes a discharge motor 441, a discharge drive shaft 442 rotatably connected to the discharge bracket 41, and a plurality of discharge drive pulleys 443 coaxially fixedly connected to the discharge drive shaft 442. The discharge drive shaft 442 passes through and is rotationally connected to the two side plates of the discharge base plate 411. The discharge drive shaft 442 is perpendicular to the rotation plane of the discharge belt 422, and the lower portion of the discharge belt 422 is sleeved on the discharge drive pulleys 443.

[0057] The output shaft of the unloading motor 441 is coaxially fixedly connected to the unloading sprocket 444, and the unloading drive shaft 442 is also coaxially fixedly connected to the unloading sprocket 444, and the two unloading sprockets 444 are covered with a unloading chain 445 to drive the unloading drive shaft 442 to rotate, and drive the unloading belt 422 to rotate through multiple unloading pulleys 421, thereby realizing the transfer of unqualified aluminum alloy profiles.

[0058] Of course, in other embodiments, the unloading drive member 44 includes a unloading motor 441 and a unloading drive shaft 442 , the unloading drive shaft 442 is coaxially fixedly connected to a plurality of unloading pulleys 421 , and the plurality of unloading pulleys 421 are arranged one-to-one corresponding to a plurality of unloading belts 422 .

[0059] Reference Figure 3and Figure 4 In addition, in order to reduce the possibility of local depression of the unloading belt 422 due to unqualified aluminum alloy during use, a unloading support plate 414 is provided on the inner side of the unloading belt 422. The unloading support plate 414 is arranged to fit the inner wall of the upper belt surface of the unloading belt 422. The unloading support plate 414 is fixedly connected to the unloading bottom plate 411 to serve as auxiliary support.

[0060] Reference Figure 4 and Figure 5 The unloading lifting member 43 is a hydraulic cylinder, an electric push cylinder or an air cylinder, and in the embodiment of the present application, it is a hydraulic cylinder. There are at least two unloading lifting members 43. In the embodiment of the present application, there are two unloading lifting members 43, and the two unloading lifting members 43 are distributed along the transmission direction of the unloading belt 422 and are located on the outside of the unloading bottom plate 411. The unloading lifting member 43 is fixedly connected to the transmission bracket 11, and the telescopic shaft of the unloading lifting member 43 is the lifting end and is vertically arranged. The lifting end of the unloading lifting member 43 is fixedly connected to the unloading top plate 412 to control the vertical lifting of the unloading bottom plate 411 and the unloading top plate 412, so that the unloading belt 422 can extend from between the adjacent transmission rollers 12 and place unqualified aluminum alloy profiles on several unloading belts 422, and then transmit them to the waste receiving mechanism 5 for processing.

[0061] Reference Figure 4 and Figure 5 The transport bracket 11 is also equipped with a plurality of guide members 45 for guiding the vertical raising and lowering of the discharge top plate 412. Four guide members 45 are provided and are located at the four corners of the discharge top plate 412. The guide members 45 include a guide top seat 451, a guide base 452, and a guide rod 453. The guide top seat 451 is flange-connected to the lower surface of the discharge top plate 412. The guide base 452 is fixedly connected to the transport bracket 11, and the ends of the guide rod 453 are respectively inserted into the guide top seat 451 and the guide base 452. The upper end surface of the guide rod 453 is fixedly connected to the discharge top plate 412 via bolts.

[0062] When in use, the guide rod 453 is fixedly connected to the unloading top plate 412 by bolts, and the guide top seat 451 is used to limit the large swing of the guide rod 453, so that the unloading top plate 412 can be guided by the guide rod 453 during the guiding process; in addition, since the guide rod 453 is inserted into the guide top seat 451, and the guide rod 453 is fixedly connected to the unloading top plate 412 by bolts, the guide rod 453 can make a slight swing in the process of guiding the vertical lifting of the unloading top plate 412, so as to reduce the possibility of local plastic deformation of the unloading top plate 412, thereby optimizing the service life and the stability of use.

[0063] Of course, in other embodiments, the unloading mechanism 4 includes a unloading truss fixedly connected to the conveying bracket 11 and a plurality of pneumatic grippers slidably connected to the unloading truss via linear motors, with the pneumatic grippers sliding in a direction parallel to the conveying rollers 12. During use, the linear motors simply control the pneumatic grippers to slide over the unqualified aluminum alloy profile, whereupon the pneumatic grippers grip the aluminum alloy profile and then slide the pneumatic grippers to the receiving end of the scrap receiving mechanism 5.

[0064] Reference Figure 6 The scrap receiving mechanism 5 includes a scrap receiving bracket 51 mounted on the conveying bracket 11 and a plurality of scrap receiving support plates 52 for receiving unqualified aluminum alloy profiles. The scrap receiving bracket 51 is located on the side of the conveying roller 12 facing away from the conveyor chain 132. The receiving support plates 52 are arranged at an angle, with their lower ends fixedly connected to the scrap receiving bracket 51. The upper ends of the receiving support plates 52 are positioned toward the conveying roller 12, and the end of the unloading belt 422 facing the scrap receiving bracket 51 is located in the gap between adjacent receiving support plates 52.

[0065] After the aluminum alloy profile is inspected by the detector, when the unqualified aluminum alloy profile needs to be placed on the waste receiving mechanism 5, the unloading lifting part 43 only needs to control the unloading top plate 412 to rise, and make the aluminum alloy profile located on the lifting route of the unloading belt 422. Then, after lifting the aluminum alloy profile, the unloading driving part 44 drives the unloading belt 422 to rotate and transfers the aluminum alloy profile to the high end of the receiving support plate 52, and then controls the unloading belt 422 to descend, so that after the aluminum alloy profile is placed on multiple receiving support plates 52, the aluminum alloy profile slides from the receiving support plate 52 to the lower end, so as to achieve relatively convenient sampling of a large number of aluminum alloy profiles while transferring the unqualified aluminum alloy profiles to the side in time, without the need for manual or control of the detector trolley to align with the aluminum alloy profile for inspection, so as to facilitate residual stress detection and processing of unqualified parts at the same time.

[0066] Reference Figure 6 In addition, the scrap receiving bracket 51 is vertically slidably connected to the transmission bracket 11 through the scrap receiving hydraulic cylinder 53, and the scrap receiving bracket 51 is fixedly connected to a number of receiving support rods 511 inserted and slidably connected to the transmission bracket 11, so as to control the vertical lifting and lowering of the scrap receiving bracket 51 and the receiving support plate 52, so as to facilitate the processing of unqualified aluminum alloy profiles.

[0067] At the same time, a baffle 521 is bent upward or hinged on one side of the multiple receiving support plates 52 away from the conveying roller 12. In the embodiment of the present application, the baffle 521 is hinged. The baffle 521 is provided with a control hydraulic cylinder 522. The telescopic end of the control hydraulic cylinder 522 is hinged to the baffle 521. The control hydraulic cylinder 522 is hinged to the scrap receiving bracket 51 to facilitate the removal of unqualified aluminum alloy profiles retained by the multiple receiving support plates 52.

[0068] Reference Figure 6 Furthermore, during random inspections, residual stress tests are performed on multiple aluminum alloy profiles. During this process, unqualified aluminum alloy profiles placed on multiple conveyor rollers 12 would affect subsequent aluminum alloy profile inspections. Therefore, the end of the discharge belt 422 facing the conveyor chain 132 is designated as the feeding end, and the feeding end of the discharge belt 422 is offset from the conveyor path of the aluminum alloy profiles on the conveyor rollers 12. The conveyor bracket 11 is provided with a pushing member 14 for pushing unqualified aluminum alloy profiles onto the discharge belt 422.

[0069] The pushing member 14 is a hydraulic cylinder, an electric pushing cylinder or an air cylinder, and two pushing members 14 are provided. The pushing member 14 is fixedly connected to one end of the transmission bracket 11 away from the unloading belt 422, and the telescopic direction of the telescopic end of the pushing member 14 is parallel to the transmission roller 12. The telescopic end of the pushing member 14 is fixedly connected with a pushing plate 141 for pushing the aluminum alloy profile.

[0070] During use, if the aluminum alloy profile is qualified, the pushing member 14 will not run at this time, and the aluminum alloy profile can be directly transported away through multiple transmission rollers 12; if the aluminum alloy profile is unqualified and needs to be reworked or discarded, the pushing member 14 will push the aluminum alloy profile to the top of the feeding end of the unloading belt 422 through the pushing plate 141, and then the unqualified aluminum alloy profile can be transported away through the rising unloading belt 422.

[0071] The present application also discloses a non-destructive testing method for residual stress in aluminum alloy. Figure 7 , the detection method comprises the following steps:

[0072] S1. Sample testing: Place a standard aluminum alloy profile sample on a plurality of transmission rollers 12 and test the standard aluminum alloy profile sample using a detector 2 to form a standard stress distribution diagram, and set a stress error range X based on the standard stress distribution diagram.

[0073] S2. Positioning: Place the aluminum alloy profile to be inspected above the multiple transmission rollers 12, and then adjust the position of the detector 2 through the X-axis sliding member 31 and the Z-axis sliding member 32 so that the detector 2 is aligned with the aluminum alloy profile.

[0074] S3. Residual stress detection: The plurality of transmission rollers 12 are driven by the transmission driving member 13 and perform step transmission, so that the detector 2 detects the aluminum alloy profile in different areas and forms a stress distribution diagram.

[0075] S4. Stress analysis: By comparing the residual stress distribution diagram of the tested aluminum alloy with the standard stress distribution diagram, if the stress of the residual stress distribution diagram is within the error range X of the standard stress distribution diagram, the residual stress of the tested aluminum alloy profile is qualified, and the qualified aluminum alloy profile is then transported away by multiple transmission rollers 12; if it exceeds the error range X of the standard stress distribution diagram, the tested aluminum alloy profile is unqualified, and the pushing member 14 pushes the unqualified aluminum alloy profile to the top of the feeding end of the unloading belt 422. During this process, the next aluminum alloy profile is synchronously transported and residual stress tested through the transmission roller 12, and then the unloading lifting member 43 controls the unloading top plate 412 to rise, and places the aluminum alloy profile on the unloading belt 422, and finally transports it to multiple receiving support plates 52.

[0076] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A non-destructive testing device for residual stress in aluminum alloys, characterized by: The invention comprises a transmission mechanism (1) for transmitting aluminum alloy profiles, a detector (2) for detecting residual stress, and a control mechanism (3) for controlling the position of the detector (2), wherein the transmission mechanism (1) comprises a transmission bracket (11), a plurality of transmission rollers (12) rotatably connected to the transmission bracket (11), and a transmission driving member (13) for simultaneously driving the plurality of transmission rollers (12) to rotate, wherein the plurality of transmission rollers (12) are parallel to each other, and the control mechanism (3) comprises an X-axis sliding member (31) and a Z-axis sliding member (32) fixedly connected to the sliding end of the X-axis sliding member (31), wherein the X-axis sliding member (31) is arranged on the transmission bracket (11), and the sliding path of the sliding end of the X-axis sliding member (31) is located above the plurality of transmission rollers (12), and the detector (2) is arranged on the sliding end of the Z-axis sliding member (32), and the sliding path of the sliding end of the X-axis sliding member (31) is parallel to the transmission roller (12); The transmission bracket (11) is further provided with a discharge mechanism (4) for discharging unqualified aluminum alloy profiles and a waste receiving mechanism (5) for receiving the aluminum alloy profiles discharged by the discharge mechanism (4), wherein the discharge mechanism (4) is located between the waste receiving mechanism (5) and the plurality of transmission rollers (12); The unloading mechanism (4) includes a unloading bracket (41), a plurality of unloading parts (42) and a unloading lifting part (43) for controlling the vertical lifting of the unloading bracket (41), the unloading bracket (41) is slidingly connected to the transmission bracket (11) through the unloading lifting part (43), the unloading part (42) includes a plurality of unloading pulleys (421) rotatably connected to the unloading bracket (41) and a unloading belt (422) outermostly wrapped around the plurality of unloading pulleys (421), the rotation plane of the unloading belt (422) is parallel to the transmission roller (12), and the vertical lifting path of the unloading belt (422) is located between two adjacent transmission rollers (12), the two ends of the transmission direction of the unloading belt (422) are respectively located at the transmission roller (12) and the receiving end of the waste receiving mechanism (5), and the unloading bracket (41) is provided with a unloading driving part (44) for driving the unloading belt (422) to rotate for transmission.

2. The aluminum alloy residual stress nondestructive testing equipment according to claim 1, characterized in that: The transmission drive member (13) includes a drive motor (131), a plurality of transmission chains (132) and a plurality of transmission sprockets (133). Two transmission sprockets (133) and two transmission chains (132) are coaxially fixedly connected to the same transmission roller (12). The transmission chain (132) is externally mounted on the transmission sprockets (133) of two adjacent transmission rollers (12). The output end of the drive motor (131) is connected to any one of the transmission rollers (12) or the transmission sprocket (133).

3. The aluminum alloy residual stress nondestructive testing equipment according to claim 1, characterized in that: The unloading bracket (41) includes a unloading bottom plate (411) and a unloading top plate (412) located below a plurality of transmission rollers (12); the unloading bottom plate (411) is a U-shaped plate structure and is provided with an upper opening; the unloading top plate (412) is fixedly connected to the opening edge of the unloading bottom plate (411); the upper plate surface of the unloading top plate (412) is fixedly connected to a unloading mounting plate (413); the unloading pulley (421) is rotatably connected to the unloading mounting plate (413); and the unloading top plate (412) is connected to the transmission bracket (11) via a unloading lifting member (43).

4. The aluminum alloy residual stress nondestructive testing equipment according to claim 1, characterized in that: The unloading bracket (41) is fixedly connected to a plurality of unloading support plates (414) for supporting the unloading belt (422).

5. The aluminum alloy residual stress nondestructive testing equipment according to claim 1, characterized in that: The unloading drive member (44) includes a unloading motor (441), a unloading drive shaft (442) rotatably connected to the unloading bracket (41), and a plurality of unloading drive pulleys (443) coaxially connected to the unloading drive shaft (442); the unloading belt (422) is externally mounted on the unloading drive pulley (443); and the output shaft of the unloading motor (441) is connected to the unloading drive shaft (442).

6. The aluminum alloy residual stress nondestructive testing equipment according to claim 1, characterized in that: The unloading lifting member (43) is a hydraulic cylinder and is provided with two or more hydraulic cylinders. The unloading lifting member (43) is installed on the transmission bracket (11), and the lifting end of the unloading lifting member (43) is connected to the unloading bracket (41). The transmission bracket (11) is provided with a guide member (45) for guiding the lifting of the unloading bracket (41).

7. The aluminum alloy residual stress nondestructive testing equipment according to claim 1, characterized in that: The scrap receiving mechanism (5) comprises a scrap receiving bracket (51) arranged on the transmission bracket (11) and a plurality of receiving support plates (52) for receiving unqualified aluminum profiles, wherein the receiving support plates (52) are arranged in an inclined manner and fixedly connected to the scrap receiving bracket (51), the high end of the receiving support plates (52) is arranged toward the transmission roller (12) and is staggered with the unloading belt (422), and the feeding end of the unloading belt (422) is located on the side of the transmission path of the aluminum alloy profile on the transmission roller (12), and the transmission bracket (11) is provided with a pushing member (14) for pushing the unqualified aluminum alloy profile to the top of the feeding end of the unloading belt (422).

8. A detection method using the aluminum alloy residual stress nondestructive testing device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Sample testing: Place the standard aluminum alloy profile sample on multiple transmission rollers (12), and test the standard aluminum alloy profile sample through the detector (2) to form a standard stress distribution diagram, and set the stress error range X based on the standard stress distribution diagram; S2. Positioning: Place the aluminum alloy profile to be tested on multiple transmission rollers (12), and then adjust the position of the detector (2) through the X-axis sliding member (31) and the Z-axis sliding member (32) so that the detector (2) is aligned with the aluminum alloy profile; S3. Residual stress Detection: Multiple transmission rollers (12) are driven by a transmission drive member (13) and perform step transmission, so that the detector (2) performs residual stress detection on the aluminum alloy profile in different regions and forms a stress distribution diagram; S4, stress analysis: By comparing the residual stress distribution diagram of the aluminum alloy being tested with the standard stress distribution diagram, if the stress of the residual stress distribution diagram is within the error range X of the standard stress distribution diagram, the residual stress of the aluminum alloy profile being tested is qualified; if it exceeds the error range X of the standard stress distribution diagram, the aluminum alloy profile being tested is unqualified.

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