A method and device for automatically detecting steel bar quality

Abstract

The present application relates to the technical field of steel bar detection, and in particular to an automated steel bar quality detection method and detection device, comprising a frame, a placement table provided on the frame, a conveying assembly for conveying steel bars provided on the placement table, a detection frame and a detection mechanism for detecting the quality of steel bars provided on the frame, the detection frame being arc-shaped, and the inner side of the detection frame being arranged toward the detection mechanism, the detection frame comprising a fixed portion and a rotating portion, the fixed portion and the rotating portion having the same structure, the rotating portion being rotatably arranged at one end of the fixed portion away from the conveying assembly, a slide bar for adjusting the position of the rotating portion being slidably provided on the frame, and a drive mechanism for adjusting the position of the slide bar provided on the frame. The present application has the effect of improving the detection efficiency of steel bars.

Description

Technical Field

[0001] The present application relates to the technical field of steel bar detection, and in particular to an automated steel bar quality detection method and detection device. Background Art

[0002] Rebar is a commonly used building material in the construction field. The quality and qualification of rebar are related to the quality and reliability of the building. The bending resistance of rebar is one of the main indicators of rebar. Therefore, before construction, the quality of rebar needs to be tested to ensure that the quality of rebar meets the requirements and at the same time ensure the quality of the building.

[0003] Related art devices for testing the quality of steel bars include a frame equipped with a placement platform for placing the steel bars, a push rod for testing the bending resistance of the steel bars, and a pressure sensor mounted above the placement platform. The push rod is used to detect the thrust applied by the push rod to the steel bars. A clamping frame is mounted on the placement platform to secure the steel bars. During testing, the steel bars are placed on the placement platform, the push rod is moved until it abuts the steel bars, and the steel bars are bent into a curved state. The pressure sensor simultaneously detects the thrust applied by the push rod to the steel bars, thereby testing the bending resistance of the steel bars.

[0004] In the above-mentioned related technologies, during detection, it is necessary to repeatedly operate the clamping frame to fix the steel bars, which affects the detection efficiency of the steel bars. Summary of the Invention

[0005] In order to improve the efficiency of steel bar detection, this application provides a steel bar quality automatic detection method and detection device

[0006] In a first aspect, the present application provides an automated steel bar quality detection device.

[0007] The following technical solutions are adopted:

[0008] A device for automatically detecting the quality of steel bars comprises a frame, a placing table is provided on the frame, a conveying assembly for conveying steel bars is provided on the placing table, a detection frame and a detection mechanism for detecting the quality of steel bars are provided on the frame, the detection frame is arc-shaped, and the inner side of the detection frame is arranged toward the detection mechanism, the detection frame comprises a fixed part and a rotating part, the fixed part and the rotating part have the same structure, the rotating part is rotatably arranged at one end of the fixed part away from the conveying assembly, a sliding rod for adjusting the position of the rotating part is slidably provided on the frame, and a driving mechanism for adjusting the position of the sliding rod is provided on the frame.

[0009] By adopting the above technical solution, the conveying component conveys the steel bars to the detection frame, and then the steel bars are inspected by the detection mechanism. After the inspection is completed, the driving mechanism drives the rotating part to rotate through the sliding rod, and at the same time, the conveying component conveys the bent part of the steel bar to the outside of the detection frame, and at the same time conveys the other positions of the steel bar to the corresponding position of the detection frame. The driving component then drives the rotating part back to the initial position through the sliding rod, and the steel bars are inspected again by the detection mechanism, so as to measure multiple sets of data and improve the inspection efficiency of the steel bars.

[0010] Optionally, the detection mechanism includes a pressure block, a pushing member and a measuring component, the pressure block is connected to the pushing member, the pushing member is set on the frame, the pushing member and the pressure block are connected for adjusting the position of the pressure block to detect the steel bars, the measuring component includes a detection member and a controller, the detection member is set between the pressure block and the pushing member for detecting the pressure applied by the pressure block to the steel bars, the controller is set on the frame, and the controller and the detection member are electrically connected for processing the signal detected by the detection member.

[0011] By adopting the above technical solution, the pushing member drives the pressure block and the steel bar to abut against each other and drives the steel bar to bend. At the same time, the detection member detects the force applied by the pressure block on the steel bar, and then transmits the detected signal to the controller for processing to detect the bending resistance of the steel bar.

[0012] Optionally, a guide rod is provided on the outside of the rotating part, a sliding sleeve is slidably provided on the outside of the guide rod, the sliding rod is slidably provided on the frame along the vertical direction, and the sliding rod and the sliding sleeve are connected on the side away from the rotating part.

[0013] By adopting the above technical solution, the sliding rod drives the sliding sleeve to move when it moves, and the sliding sleeve moves in the vertical direction, driving the guide rod to rotate, and then adjusting the position of the rotating part to move the bent part of the steel bar out of the detection frame for detection at the next position.

[0014] Optionally, the driving mechanism includes a driving member, an intermediate member and a gear, the sliding rod is provided with a tooth groove along its length direction, the gear is rotatably arranged on the frame, the gear and the tooth groove are engaged, the driving member and the gear are connected through the intermediate member, and the driving member is arranged on the frame to drive the gear to rotate.

[0015] By adopting the above technical solution, the driving member drives the gear to rotate through the intermediate member, the gear drives the slide rod to move through the tooth groove, the slide rod drives the sleeve to move, and while the sleeve moves relative to the guide rod, the guide rod drives the rotating part to rotate, thereby adjusting the position of the rotating part.

[0016] Optionally, the intermediate component includes a worm wheel and a worm, the worm is connected to the output end of the driving component, the worm wheel is rotatably arranged on the frame, the worm wheel and the worm are meshed, and the worm wheel and the gear are coaxially fixedly connected.

[0017] By adopting the above technical solution, the worm wheel and the worm are self-locking. After the position of the rotating part is adjusted, the stability of the rotating part is improved so that the steel bars can be inspected.

[0018] Optionally, an abutment wheel is provided in the sliding sleeve, the sliding sleeve abuts against the guide rod through the abutment wheel, and the abutment wheel is rotatably provided in the sliding sleeve.

[0019] By adopting the above technical solution, the sliding sleeve abuts against the guide rod through the abutment wheel. When the sliding sleeve moves relative to the guide rod, the friction between the sliding sleeve and the guide rod is reduced, so that the position of the sliding sleeve can be adjusted.

[0020] Optionally, the conveying assembly includes a conveying member and a conveying wheel, the conveying wheel is rotatably arranged on the placement table, the output end of the conveying member is connected to the conveying wheel to drive the conveying wheel to rotate, and a pressure wheel is provided on the frame, the pressure wheel and the conveying wheel are spaced apart, and the sides of the pressure wheel and the conveying wheel abut against the steel bars for conveying the steel bars.

[0021] By adopting the above technical solution, the conveying member drives the conveying wheel to rotate, and the rotation of the conveying wheel drives the steel bar to move between the conveying wheel and the pressure wheel, thereby adjusting the position of the steel bar.

[0022] Optionally, the pressing block is arranged between the pushing member and the detection frame, and a side of the pressing block close to the detection frame is in an arc shape.

[0023] By adopting the above technical solution, the side where the pressure block and the steel bar abut is set to be arc-shaped. When the steel bar bends, the contact area between the pressure block and the steel bar is gradually increased, thereby improving the stability during steel bar detection.

[0024] Optionally, a groove is provided on the arc side of the pressing block, and the groove is arranged along the arc side of the pressing block. Baffles for limiting the position of the steel bars are provided on both sides of the fixed part and the rotating part.

[0025] By adopting the above technical solution, after the pressing block and the steel bar are in contact, the steel bar enters the groove, and at the same time, the part of the steel bar in contact with the detection frame enters between the baffles, reducing the phenomenon of the steel bar detaching from the pressing block and the detection frame during the process of the pressing block mortgaged the steel bar.

[0026] In the second aspect, this application provides a method for automatically detecting steel bar quality

[0027] The following technical solutions are adopted:

[0028] A method for automatically detecting steel bar quality comprises the following steps:

[0029] S1, the conveying member drives the conveying wheel to rotate and convey the steel bars to the inspection frame;

[0030] S2, the pusher drives the pressing block to move to abut against the steel bar, and at the same time applies pressure to the steel bar to bend the steel bar in the direction toward the detection frame;

[0031] S3, when the pressing block bends the steel bar, the pressure exerted by the pressing block on the steel bar is detected by the measuring component;

[0032] S4, after the test is completed, the pressing block driven by the pushing member returns to the initial position, and the driving member drives the rotating part to rotate through the sliding rod;

[0033] S5, the conveyor drives the steel bar to move, conveying the bent part of the steel bar to the stable groove, and at the same time conveying the next part of the steel bar to be tested to the testing frame;

[0034] S6, the driving member drives the rotating part back to the initial position through the sliding rod, and steps S2 and S3 are repeated to test the bending resistance of the steel bar again.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] 1. The position of the rotating part is adjusted by the driving part and the sliding rod, and then the position of the steel bar is adjusted by the conveying part to separate the bending part of the steel bar from the detection frame, and the other parts to be detected on the steel bar are moved to the detection frame for re-detection, thereby improving the detection efficiency of the steel bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural diagram of the automatic steel bar quality detection device of an embodiment of the present application.

[0038] Figure 2 This is a partial view of the automatic steel bar quality detection device according to an embodiment of the present application.

[0039] Figure 3 This is a structural view of the conveying component in the automatic steel bar quality detection device of an embodiment of the present application.

[0040] Figure 4 This is a structural diagram of the driving mechanism in the automatic steel bar quality detection device according to an embodiment of the present application.

[0041] Figure 5 This is a structural view of the sliding sleeve in the automatic steel bar quality detection device of an embodiment of the present application.

[0042] Figure 6 This is a view of the expanded state of the rotating part in the automatic steel bar quality detection device of an embodiment of the present application.

[0043] Figure markings: 1. Frame; 11. Pressure wheel; 12. Stabilizing frame; 13. Stabilizing groove; 2. Placement table; 3. Detection mechanism; 31. Pressure block; 311. Groove; 32. Pusher; 33. Measuring assembly; 331. Detection member; 332. Controller; 4. Detection frame; 41. Fixing part; 42. Rotating part; 5. Conveying assembly; 51. Conveying member; 52. Conveying wheel; 6. Baffle; 7. Guide rod; 71. Sleeve; 711. Abutment wheel; 8. Slide rod; 81. Tooth groove; 9. Driving mechanism; 91. Driving member; 92. Intermediate member; 921. Worm wheel; 922. Worm; 93. Gear. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-6 This application is described in further detail.

[0045] The present application discloses an automatic detection device for steel bar quality.

[0046] Reference Figure 1 and Figure 2 The automated steel bar quality inspection device includes a frame 1, a placement table 2 for placing steel bars on the frame 1, a detection frame 4 on one side of the placement table 2, and a detection mechanism 3 for detecting steel bars on the frame 1. During testing, the steel bars are placed on the placement table 2 and then moved to the detection frame 4, where the quality of the steel bars is inspected by the detection mechanism 3.

[0047] Reference Figure 2 and Figure 3 A conveying assembly 5 is provided on the placement table 2. The conveying assembly 5 includes a conveying member 51 and a conveying wheel 52. The conveying wheel 52 is rotatably provided on the placement table 2. The conveying member 51 is provided on the placement table 2. The conveying member 51 can be provided as a motor. The output end of the motor is connected to the conveying wheel 52 to drive the conveying wheel 52 to rotate. A pressure wheel 11 is also provided on the frame 1. The pressure wheel 11 and the conveying wheel 52 are spaced apart. The steel bars are placed between the pressure wheel 11 and the conveying wheel 52, and the sides of the pressure wheel 11 and the conveying wheel 52 abut against the steel bars. When the steel bars need to be inspected, the conveying member 51 drives the conveying wheel 52 to rotate and transport the steel bars to the inspection frame 4 for inspection.

[0048] Reference Figure 1 and Figure 2The detection frame 4 is semi-circular in shape, and the opening of the detection frame 4 is set away from the ground. During the test, the steel bar is placed at the opening of the detection frame 4. The detection mechanism 3 drives the steel bar to bend in the direction toward the inside of the detection frame 4 to test the bending resistance of the steel bar. The detection mechanism 3 includes a pressure block 31, a pusher 32 and a measuring assembly 33. The pusher 32 is set on the frame 1 and is set on the side of the placement table 2 away from the ground. The output end of the pusher 32 is set toward the placement table 2, and the output end of the pusher 32 is connected to the pressure block 31 for adjusting the position of the pressure block 31. The pusher 32 can be set as a cylinder, and the piston rod of the cylinder is connected to the pressure block 31. The measuring assembly 33 is set between the pressure block 31 and the piston rod.

[0049] During testing, the steel bar is placed on the testing frame 4, and the pushing member 32 drives the pressure block 31 to abut against the side of the steel bar, and then the pushing member 32 drives the pressure block 31 to continue to move, so that the part of the steel bar that abuts against the pressure block 31 is bent toward the testing frame 4. At the same time, the force applied by the pressure block 31 to the steel bar is measured and recorded by the measuring component 33, and the bending resistance of the steel bar is tested.

[0050] Reference Figure 1 and Figure 2 The measuring assembly 33 includes a detection member 331 and a controller 332. The detection member 331 can be configured as a pressure sensor for detecting the pressure between the piston rod and the pressure block 31. The controller 332 is disposed on the frame 1. The detection member 331 and the controller 332 are electrically connected. When testing the bending resistance of the steel bar, the detection member 331 transmits the detected data to the controller 332, which processes the received signal. The controller 332 can be connected to other terminals to display the processed data for analyzing the bending resistance of the steel bar.

[0051] Reference Figure 1 and Figure 2 The side of the pressure block 31 close to the detection frame 4 is in an arc shape, and the arc side of the pressure block 31 corresponds to the inner side of the detection frame 4. When the pressure block 31 drives the steel bar to bend, the arc side of the pressure block 31 abuts against the steel bar, causing the steel bar to gradually deform and bend, thereby improving the accuracy of steel bar detection. A groove 311 is provided on the arc side of the pressure block 31. The groove 311 is in an arc shape, that is, the groove 311 is arranged along the arc side of the pressure block 31. Baffles 6 are provided on both sides of the detection frame 4, and the baffles 6 are arranged along the side of the detection frame 4. After the pressure block 31 abuts against the steel bar, the steel bar enters the groove 311, and the part that enters the detection frame 4 enters between the two baffles 6. The position of the steel bar is restricted by the groove 311 and the baffle 6, thereby reducing the phenomenon that the steel bar is separated from the pressure block 31 when the pressure block 31 bends the steel bar, thereby improving the stability during measurement.

[0052] Reference Figure 3and Figure 4 In order to facilitate the measurement of multiple sets of data and improve the detection accuracy of steel bars, a detection frame 4 is provided, which includes a fixed portion 41 and a rotating portion 42. The fixed portion 41 and the rotating portion 42 have the same shape and structure. The fixed portion 41 and the rotating portion 42 are arranged along the conveying direction of the steel bars. The fixed portion 41 is fixedly connected to the frame 1, and the rotating portion 42 is rotatably arranged on the fixed portion 41. The rotating portion 42 is arranged at the end of the fixed portion 41 away from the conveying member 51. A guide rod 7 is arranged on the outside of the rotating portion 42. The guide rod 7 is arc-shaped, and the center of the guide rod 7 coincides with the center of the rotating portion 42. A sliding sleeve 71 is sleeved on the outside of the guide rod 7. The sliding sleeve 71 is slidably arranged on the guide rod 7 along the length direction of the guide rod 7. A sliding rod 8 is provided on the side of the sliding sleeve 71 away from the rotating portion 42. The sliding rod 8 is slidably arranged on the frame 1 along the vertical direction.

[0053] Reference Figure 4 and Figure 6 After the steel bar is inspected, the position of the slide bar 8 on the frame 1 is adjusted. While the slide bar 8 and the sliding sleeve 71 are moving, the rotating part 42 is driven to rotate in the direction away from the steel bar through the guide rod 7. Then the conveying member 51 drives the steel bar to move, and the bent part of the steel bar is conveyed to the outside of the inspection frame 4. At the same time, the unbent part is conveyed to the inspection frame 4. The slide bar 8 and the sliding sleeve 71 drive the rotating part 42 to return to the initial position, and the steel bar is inspected again, so that multiple sets of data can be measured for the same steel bar to improve the accuracy of the inspection.

[0054] Reference Figure 3 and Figure 4 A driving mechanism 9 is provided on the frame 1, and the driving mechanism 9 includes a driving member 91, an intermediate member 92 and a gear 93. A tooth groove 81 is opened on the slide bar 8 along its length direction. The gear 93 is rotatably set on the frame 1, and the gear 93 is engaged with the tooth groove 81. The driving member 91 is set on the frame 1, and the intermediate member 92 is set between the driving member 91 and the gear 93. The driving member 91 is used to drive the gear 93 to rotate. The gear 93 rotates to adjust the position of the slide bar 8 through the tooth groove 81, and then adjust the position of the rotating part 42.

[0055] Reference Figure 3 and Figure 4 The intermediate member 92 includes a worm gear 921 and a worm 922. The driving member 91 can be configured as a motor, the output end of the motor being connected to the worm 922. The worm gear 921 is rotatably mounted on the frame 1, and the worm gear 921 and the worm 922 are meshed. The worm gear 921 and the gear 93 are coaxially fixedly connected. The driving member 91 drives the worm gear 921 to rotate via the worm 922. The rotation of the worm gear 921 drives the gear 93 to rotate, thereby adjusting the position of the slide bar 8. The worm gear 921 and the worm 922 are self-locking, which improves the stability of the rotating portion 42 after the position of the rotating portion 42 is adjusted.

[0056] Reference Figure 1 and Figure 2 To improve the stability of the steel bars during transportation, a stabilization frame 12 is provided on the frame 1. Stabilization grooves 13 are formed on the stabilization frame 12 along the conveying direction of the steel bars. After the steel bars are conveyed into the stabilization grooves 13, the side surfaces of the steel bars abut against the inner walls of the stabilization grooves 13. After the steel bars are measured, the bent portions of the steel bars enter the stabilization grooves 13 under the action of the conveying member 51. The stabilization grooves 13 restrict the position of the steel bars, improving the stability of the steel bars during transportation.

[0057] Reference Figure 4 and Figure 5 An abutment wheel 711 is rotatably provided in the sliding sleeve 71. There are two abutment wheels 711, and the two abutment wheels 711 are provided on both sides of the guide rod 7. The sliding sleeve 71 slides on the guide rod 7 through the abutment wheels 711, reducing the friction between the sliding sleeve 71 and the guide rod 7, so as to adjust the position of the rotating part 42.

[0058] The implementation principle of the present application is: the steel bars are transported to the detection frame 4, and then the pressure block 31 is moved to bend the steel bars, and at the same time, the bending resistance of the steel bars is tested by the measuring component 33. After the test is completed, the pressure block 31 returns to the initial position, and the position of the slide bar 8 is adjusted by the driving member 91. The slide bar 8 drives the rotating part 42 to rotate, and then the conveying member 51 transports the steel bars and transports the bent part of the steel bars to the stable groove 13. At the same time, the next section of steel bars to be tested is transported to the detection frame 4, and the driving member 91 drives the rotating part 42 to return to the initial position. The steel bars are tested again by the pressure block 31, so as to measure multiple groups of bending performance data of the steel bars and improve the detection efficiency.

[0059] The present application also discloses a method for automatically detecting steel bar quality, which adopts the above-mentioned automatic steel bar quality detection device.

[0060] A method for automatically detecting steel bar quality comprises the following steps:

[0061] S1, the conveying member 51 drives the conveying wheel 52 to rotate and convey the steel bars to the detection frame 4;

[0062] S2, the pusher 32 drives the pressing block 31 to move to contact the steel bar, and at the same time applies pressure to the steel bar to bend the steel bar toward the detection frame 4;

[0063] S3, when the pressing block 31 bends the steel bar, the pressure applied by the pressing block 31 to the steel bar is detected by the measuring component 33;

[0064] S4, after the detection is completed, the pressing block 31 driven by the pushing member 32 returns to the initial position, and the driving member 91 drives the rotating part 42 to rotate through the sliding rod 8;

[0065] S5, the conveyor 51 drives the steel bar to move, conveying the bent part of the steel bar to the stable groove 13, and at the same time conveying the next part of the steel bar to be tested to the testing frame 4;

[0066] S6, the driving member 91 drives the rotating part 42 to return to the initial position through the sliding rod 8, and steps S2 and S3 are repeated to test the bending resistance of the steel bar again.

[0067] 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. An automatic steel bar quality detection device, comprising a frame (1), characterized in that: The frame (1) is provided with a placing table (2), the placing table (2) is provided with a conveying assembly (5) for conveying steel bars, the frame (1) is provided with a detection frame (4) and a detection mechanism (3) for detecting the quality of the steel bars, the detection frame (4) is in an arc shape, and the inner side of the detection frame (4) is arranged toward the detection mechanism (3), the detection frame (4) includes a fixed portion (41) and a rotating portion (42), the fixed portion (41) and the rotating portion (42) have the same structure, the rotating portion (42) is rotatably arranged at one end of the fixed portion (41) away from the conveying assembly (5), a slide rod (8) for adjusting the position of the rotating portion (42) is slidably provided on the frame (1), and a driving mechanism (9) for adjusting the position of the slide rod (8) is provided on the frame (1); The detection mechanism (3) includes a pressing block (31), a pushing member (32) and a measuring assembly (33), wherein the pressing block (31) and the pushing member (32) are connected, and the pushing member (32) is arranged on the frame (1). The pushing member (32) and the pressing block (31) are connected for adjusting the position of the pressing block (31) to detect the steel bar, and the measuring assembly (33) includes a detecting member (331) and a controller (332), wherein the detecting member (331) is arranged between the pressing block (31) and the pushing member (32) to detect the pressure applied by the pressing block (31) to the steel bar, and the controller (332) is arranged on the frame (1), and the controller (332) and the detecting member (331) are electrically connected for processing the signal detected by the detecting member (331); A guide rod (7) is provided on the outside of the rotating part (42), and a sliding sleeve (71) is provided on the outside of the guide rod (7) for sliding. The sliding rod (8) is slidably provided on the frame (1) along a vertical direction, and the sliding rod (8) and the sliding sleeve (71) are connected on a side away from the rotating part (42); the driving mechanism (9) includes a driving member (91), an intermediate member (92) and a gear (93), a tooth groove (81) is provided on the sliding rod (8) along its length direction, and the gear (93) is rotatably provided on the frame (1). The drive member (91) and the gear (93) are meshed with the tooth groove (81), and the drive member (91) and the gear (93) are connected via an intermediate member (92). The drive member (91) is arranged on the frame (1) and is used to drive the gear (93) to rotate. The intermediate member (92) includes a worm wheel (921) and a worm (922). The worm (922) is connected to the output end of the drive member (91). The worm wheel (921) is rotatably arranged on the frame (1). The worm wheel (921) and the worm (922) are meshed. The worm wheel (921) and the gear (93) are coaxially fixedly connected. The frame (1) is provided with a stabilizing frame (12), and a stabilizing groove (13) is provided on the stabilizing frame (12) along the conveying direction of the steel bar; after the steel bar is measured, the bent portion of the steel bar enters the stabilizing groove (13) under the action of the conveying assembly (5), and the position of the steel bar is restricted by the stabilizing groove (13).

2. The automatic steel bar quality detection device according to claim 1, characterized in that: An abutment wheel (711) is provided in the sliding sleeve (71), and the sliding sleeve (71) abuts against the guide rod (7) via the abutment wheel (711), and the abutment wheel (711) is rotatably provided in the sliding sleeve (71).

3. The automatic steel bar quality detection device according to claim 2, characterized in that: The conveying assembly (5) includes a conveying member (51) and a conveying wheel (52), wherein the conveying wheel (52) is rotatably arranged on the placement table (2), and the output end of the conveying member (51) is connected to the conveying wheel (52) for driving the conveying wheel (52) to rotate. A pressing wheel (11) is provided on the frame (1), and the pressing wheel (11) and the conveying wheel (52) are spaced apart. The sides of the pressing wheel (11) and the conveying wheel (52) abut against steel bars for conveying steel bars.

4. The automatic steel bar quality detection device according to claim 1, characterized in that: The pressing block (31) is arranged between the pushing member (32) and the detection frame (4), and the side of the pressing block (31) close to the detection frame (4) is in an arc shape.

5. The automatic steel bar quality detection device according to claim 4, characterized in that: A groove (311) is provided on the arc side of the pressing block (31), and the groove (311) is provided along the arc side of the pressing block (31). Baffles (6) for limiting the position of the steel bars are provided on both sides of the fixing portion (41) and the rotating portion (42).

6. A method for automatically detecting steel bar quality, using the automatic steel bar quality detection device according to any one of claims 3 to 5, characterized in that: The steps include: S1, the conveying member (51) drives the conveying wheel (52) to rotate and convey the steel bars to the detection frame (4); S2, the pushing member (32) drives the pressing block (31) to move to contact the steel bar, and at the same time applies pressure to the steel bar to bend the steel bar in the direction toward the detection frame (4); S3, when the pressing block (31) bends the steel bar, detecting the pressure exerted by the pressing block (31) on the steel bar by the measuring component (33); S4, after the detection is completed, the pressing block (31) driven by the pushing member (32) returns to the initial position, and the driving member (91) drives the rotating part (42) to rotate through the sliding rod (8); S5, the conveying member (51) drives the steel bar to move, conveying the bent portion of the steel bar to the stable groove (13), and at the same time conveying the next portion of the steel bar to be tested to the testing frame (4); S6, the driving member (91) drives the rotating portion (42) to return to the initial position via the sliding rod (8), and steps S2 and S3 are repeated to test the bending resistance of the steel bar again.

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