Device for preventing deformed steel bars from being stacked before cold shearing of bars

Abstract

The invention provides a device for preventing deformed steel bars from being stacked before cold shearing of bars, and relates to the technical field of steel production in the metallurgical industry, the device comprises a conveying roller way, a cold shearing machine is arranged on one side of the conveying roller way, an infrared detector is arranged at the top of the conveying roller way, and a vibrating screen is embedded in the top of the conveying roller way; the vibrating motor is fixedly mounted on the side wall of the conveying roller way, one side of the vibrating screen is connected with an output shaft of the vibrating motor, and the pressing mechanism is arranged on one side of the vibrating screen. Before cold shearing is carried out on bars, the automatic vibrating screen and the pressing mechanism are additionally arranged on the conveying roller way, and deformed steel bars can be flatly laid on the conveying roller way after being conveyed to a cold shearing machine through the device, so that the punching quality problems of elbows, triangular heads and the like can be avoided in the deformed steel bar cold shearing process; the post-finishing circulation of a bar production line can be effectively improved, the appearance quality objection of products is reduced and avoided, the labor cost is reduced, and the yield is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel production in the metallurgical industry, and particularly relates to an anti-stack device for deformed steel bars before cold shearing of bars. Background Art

[0002] In the process of steel production, after passing through processes such as rolling and cooling, deformed steel bars need to be sheared on a cold shear. However, due to the special shape and size of deformed steel bars, as well as various factors in the production process, such as conveying speed and equipment accuracy, the deformed steel bars may stack up before cold shearing, which not only affects production efficiency, but may also cause damage to equipment and even lead to safety accidents.

[0003] Currently, due to the limited width of the output roller table before cold shearing on the bar production line, the deformed steel bars run off track and stack up on the output roller table, resulting in appearance quality problems of finished products such as bent ends and triangular heads after subsequent cold shearing; secondly, during punching, manual removal of steel bars is required, and manual bending of the ends and cutting of triangular heads are required after stacking, which increases the working intensity of operators, greatly increases the labor cost, and reduces the finished product rate of deformed steel bars. Therefore, it is urgent to design an anti-stack device for deformed steel bars before cold shearing of bars to solve the above problems. Summary of the Invention

[0004] The present invention provides an anti-stack device for deformed steel bars before cold shearing of bars to solve at least one of the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention discloses an anti-stack device for deformed steel bars before cold shearing of bars, including a conveying roller table. A cold shear is arranged on one side of the conveying roller table. An infrared detector is arranged on the top of the conveying roller table. A vibrating screen is embedded in the top of the conveying roller table. A vibrating motor is fixedly installed on the side wall of the conveying roller table. One side of the vibrating screen is connected to the output shaft of the vibrating motor. A pressing mechanism is arranged on one side of the vibrating screen. The conveying roller table is used for conveying deformed steel bars.

[0006] Preferably, the pressing mechanism includes a mounting frame. The bottom of the mounting frame is fixedly installed on the top of the conveying roller table. The fixed end of a cylinder is fixedly installed on the top of the mounting frame through a mounting bracket. The bottoms of two support seats are symmetrically fixedly installed on the top of the conveying roller table in the front and back. One side of a mounting frame is hinged to the telescopic end of the cylinder, and the two side walls of the mounting frame are respectively hinged to the tops of the two support seats. Both ends of a pressure roller are hinged to the other side of the mounting frame.

[0007] Preferably, it further includes an electromagnetic valve. The electromagnetic valve is fixedly installed on the side wall of the conveying roller table, and the electromagnetic valve and the vibrating motor are electrically connected to the infrared detector.

[0008] Preferably, it also includes an auxiliary cold shearing mechanism, which is arranged on the side wall of the conveying roller, and the auxiliary cold shearing mechanism includes: a fixed frame, the fixed frame is fixedly mounted on the side wall of the conveying roller, the servo motor is fixedly mounted on the inner wall of the front side of the fixed frame, the worm is fixedly mounted on the output shaft of the servo motor, a fixed plate 1 is fixedly mounted on the inner wall of the fixed frame, and one end of the worm rotates through the fixed plate 1 and is connected to a toggle assembly, a support plate is fixedly mounted on the inner wall of the fixed frame, a rotating shaft is rotatably connected to the support plate, and two ends of the rotating shaft are respectively fixedly mounted with a worm wheel and a driving gear, the worm wheel is meshed with the worm, a fixed plate 2 is fixedly mounted on the inner wall of the left side of the fixed frame, a slide rail is embedded in the fixed plate 2, the rack 1 is slidably connected to the slide rail through a slider, the rack 1 is meshed with the driving gear, and the rack 1 is used to drive the tail assembly.

[0009] Preferably, the tail assembly includes a driving motor, which is fixedly mounted on the side wall of the fixed plate 2, and the output shaft of the driving motor is fixedly mounted with a driving shaft, a sliding sleeve is slidably connected to a sliding groove embedded in the driving shaft, and the sliding sleeve is rotatably connected to the connecting plate through a shaft sleeve, one side of the connecting plate is fixedly connected to one end of the rack 1, and two baffles are symmetrically fixedly mounted on the side wall of the sliding sleeve through a mounting rod.

[0010] Preferably, the toggle assembly includes: a driving pulley, which is fixedly mounted on the worm gear, a transmission shaft is fixedly mounted on the inner wall of the left side of the fixed frame, a driven drive and an incomplete gear are respectively fixedly mounted on the transmission shaft, the driven pulley is connected to the driving pulley through a driving belt, the auxiliary box is fixedly mounted on the rear side wall of the fixed frame through a mounting plate, and one end of the driving rod slides through the two side walls of the auxiliary box, and a plurality of toggle rods are hinged on the driving rod at a front-to-rear interval, the middle parts of the plurality of toggle rods are hinged to the inner wall of the bottom opening of the auxiliary box through a hinge rod, and a spring is sleeved on the driving rod, the spring is fixedly connected to the inner wall of the auxiliary box, and a rack 2 is fixedly mounted on one end of the driving rod, and the rack 2 meshes with the incomplete gear.

[0011] Preferably, it also includes a swinging assembly, which is arranged on the rear side wall of the fixing frame, and the swinging assembly includes a guide rail, which is fixedly mounted on the rear side wall of the fixing frame, the bottom of the placement slot is slidably connected to the guide rail, and the top of the placement slot is embedded with a plurality of grooves, the cam is fixedly mounted on the driving shaft, one end of the connecting rod is hinged to the cam away from the center, and the other end of the connecting rod is hinged to the side wall of the placement slot.

[0012] Preferably, it further includes a shearing performance detection device for detecting the cold shearing effect after cold shearing operation on the deformed steel bars after using the anti-stack device for deformed steel bars before cold shearing of the bar. The shearing performance detection device includes:

[0013] A speed sensor for detecting the speed of the conveying roller table for conveying the deformed steel bars during the cold shearing operation;

[0014] A pressure sensor for detecting the pressure applied by the cold shearing machine when shearing the deformed steel bars;

[0015] A controller and an alarm. The controller is electrically connected to the speed sensor, the pressure sensor and the alarm. The controller controls the alarm to work based on the speed sensor and the temperature and pressure sensor.

[0016] Preferably, the controller controls the alarm to work based on the degree speed sensor and the pressure sensor, including the following steps:

[0017] Step 1: According to formula (1) and the detection value of the speed sensor, calculate the Poisson's ratio v of the actual material of the deformed steel bars when the anti-stack device for deformed steel bars before cold shearing of the bar conveys and cold shears the deformed steel bars:

[0018]

[0019] Wherein, v is the actual Poisson's ratio of the deformed steel bar material when the anti-stack device for deformed steel bars before cold shearing of the bar conveys and cold shears the deformed steel bars, L is the length of the deformed steel bar to be cold sheared, ρ is the density of the deformed steel bar, V is the detection value of the speed sensor for the speed of the conveying roller table for conveying the deformed steel bars during the cold shearing operation, A is the cross-sectional area of the deformed steel bar, β is the shear correction coefficient of the deformed steel bar, and σ is the theoretical shear stress of the deformed steel bar;

[0020] Step 2: According to the following formula (2) and the detection value of the pressure sensor, calculate the actual buckling strength W of the deformed steel bars when the anti-stack device for deformed steel bars before cold shearing of the bar conveys and cold shears the deformed steel bars. The controller compares the actual buckling strength W of the deformed steel bars when the anti-stack device for deformed steel bars before cold shearing of the bar conveys and cold shears the deformed steel bars with the preset buckling strength range of the deformed steel bars. When the actual buckling strength of the actual deformed steel bar is higher than the preset buckling strength range of the deformed steel bar, the controller controls the alarm to give an alarm:

[0021]

[0022] Among them, W is the actual buckling strength of the rebar when the rebar is cold sheared during transportation by the anti-rebar stacking device before cold shearing of the bar, α is the shear resistance coefficient of the rebar, E is the elastic modulus of the rebar, λ is the maximum breaking tensile coefficient of the rebar, H is the height of the cold shear tool blade, A is the length of the cold shear tool, B is the width of the cold shear tool, d is the width of the cold shear tool, and F is the detection of the pressure sensor on the pressure applied by the cold shear when shearing the rebar.

[0023] The present invention provides a device for stacking threaded steel bars before cold shearing of bars. Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. In the process of feeding the bar before cold shearing, the above device adds an automatic vibrating screen and a pressing roller on the conveying roller. First, the rebars that have deviated and stacked on the conveying roller can be dispersed. Second, the pressing roller in the clamping mechanism can prevent the rebars dispersed by the vibrating screen from deviating and stacking again. The device can realize automatic control of vibration, pressing down and lifting, so that the rebars that have deviated and stacked can be laid flat on the output roller again.

[0025] 2. The above device can lay the rebar flat on the input roller and run it to the cold shearing process. After cold shearing, it can effectively avoid the appearance quality problems of the finished product such as elbows and triangular heads in the sheared section of the rebar, reduce labor costs, effectively improve the circulation of post-production line finishing, and improve the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic structural diagram of a device for stacking threaded steel bars before cold shearing of bars provided by an embodiment of the present invention;

[0028] Figure 2 A schematic structural diagram of the connection between a conveying roller and an auxiliary cold shearing mechanism of a bar cold shearing prevention threaded steel stacking device provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of a top view of the structure of an auxiliary cold shearing mechanism of a device for stacking threaded steel bars before cold shearing of bars provided by an embodiment of the present invention;

[0030] Figure 4 A schematic structural diagram of the internal connection of an auxiliary box of a device for stacking threaded steel bars before cold shearing of bars provided in an embodiment of the present invention.

[0031] Reference Signs:

[0032] 1. Conveyor roller table; 2. Cold shear; 3. Infrared detector; 4. Vibrating screen; 5. Vibrating motor; 6. Pressing mechanism; 7. Rebar; 8. Mounting frame; 9. Cylinder; 10. Mounting bracket; 11. Support seat; 12. Mounting frame; 13. Pressing roller; 14. Solenoid valve; 15. Auxiliary cold shear mechanism; 16. Fixed frame; 17. Servo motor; 18. Worm; 19. First fixing plate; 20. Support plate; 21. Rotating shaft; 22. Worm gear; 23. Driving gear; 24. Second fixing plate; 25. Slide rail; 26. First rack; 27. Slide block; 28. Driving motor; 29. Driving shaft; 30. Sleeve; 31. Chute; 32. Bushing; 33. Connecting plate; 34. Baffle; 35. Mounting rod; 36. Driving pulley; 37. Transmission shaft; 38. Driven pulley; 39. Incomplete gear; 40. Driving belt; 41. Auxiliary box; 42. Mounting plate; 43. Driving rod; 44. Poking rod; 45. Spring; 46. Second rack; 47. Swing assembly; 48. Guide rail; 49. Placing groove; 50. Groove; 51. Cam; 52. Connecting rod. Detailed Embodiments

[0033] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments in the present invention fall within the protection scope of the present invention.

[0034] The present invention provides the following embodiments

[0035] Embodiment 1

[0036] The embodiment of the present invention provides a device for preventing rebar stacking before cold shearing of bars, as Figure 1 shown, including a conveyor roller table 1. A cold shear 2 is arranged on one side of the conveyor roller table 1. An infrared detector 3 is arranged on the top of the conveyor roller table 1. A vibrating screen 4 is embedded in the top of the conveyor roller table 1. A vibrating motor 5 is fixedly installed on the side wall of the conveyor roller table 1. One side of the vibrating screen 4 is connected to the output shaft of the vibrating motor 5. A pressing mechanism 6 is arranged on one side of the vibrating screen 4. The conveyor roller table 1 is used for conveying rebar 7.

[0037] Preferably, the pressing mechanism 6 includes a mounting frame 8, the bottom of the mounting frame 8 is fixedly installed on the top of the conveying roller path 1, the fixed end of the air cylinder 9 is fixedly installed on the top of the mounting frame 8 through a mounting bracket 10, the bottoms of two support seats 11 are symmetrically fixedly installed on the top of the conveying roller path 1 in the front and back, one side of the mounting frame 12 is hinged to the telescopic end of the air cylinder 9, and the two side walls of the mounting frame 12 are respectively hinged to the tops of the two support seats 11, and both ends of the pressing roller 13 are hinged to the other side of the mounting frame 12.

[0038] Preferably, it further includes a solenoid valve 14, the solenoid valve 14 is fixedly installed on the side wall of the conveying roller path 1, and the solenoid valve 14 and the vibration motor 5 are electrically connected to the infrared detector 3.

[0039] The working principle and beneficial effects of the above technical solution are as follows:

[0040] In the process of feeding the bar cold shear before the bar cold shear, the automatic vibrating screen 4 and the pressing roller 13 are added on the conveying roller path 1 of the bar cold shear before the bar cold shear. First, the deformed steel bars 7 that deviate and stack on the conveying roller path 1 can be dispersed. Second, the pressing roller 13 in the pressing mechanism 6 can prevent the deformed steel bars 7 dispersed by the vibrating screen 4 from deviating and stacking again. The device can realize automatic control of vibration, pressing down, and lifting, so that the deformed steel bars 7 that deviate and stack can be re-flattened on the output roller path.

[0041] The above-mentioned conveying roller path 1 can stably convey the deformed steel bars 7 to be cold-sheared into the cold shear machine 2. The vibrating screen 4 provided in cooperation with the vibration motor 5 can vibrate and disperse the deformed steel bars 7 conveyed on the conveying roller path 1. The solenoid valve 14 is fixedly installed on the side wall of the conveying roller path 1. The solenoid valve 14 and the vibration motor 5 are electrically connected to the infrared detector 3. The infrared detector 3 detects the conveying state of the deformed steel bars 7 on the conveying roller path 1, so as to control the start of the vibration motor 5 and the opening and closing of the solenoid valve 14, and can realize the vibration dispersion of the deformed steel bars on the conveying roller path 1 and the pressing under the action of the air cylinder 9.

[0042] When the device for preventing the stacking of threaded steel bars 7 before cold shearing of the bar is working, first, when the threaded steel bars 7 run on the conveyor roller 1 to a few meters away from the feeding port of the cold shearing machine 2, the infrared detector 3 of the threaded steel bars 7 on the conveyor roller 1 is triggered. The infrared detector 3 sends a signal to the vibration motor 5 and then starts the vibration motor 5. The vibration motor 5 drives the vibrating screen 4 to act on the threaded steel bars 7 to disperse the threaded steel bars 7 that have deviated and stacked. At the same time, the signal is delayed for 3S and then sent to the air circuit solenoid valve 14 of the clamping mechanism 6. After the solenoid valve 14 is energized, it controls the action of the cylinder 9 of the clamping mechanism 6. The cylinder 9 The telescopic drive mounting frame 12 rotates along the support seat 11, so that the pressure roller 13 rotatably mounted on the mounting frame 12 moves downward. After the pressure roller 13 is pressed down, the scattered rebars 7 can be prevented from deviating and stacking again. The rebars 7 are conveyed to the feeding port of the cold shearing machine 2 for shearing to a fixed size into finished products. When all the bars are sheared into finished rebars 7, the signal of the infrared detector 3 is disengaged, the vibration motor 5 stops, the air circuit solenoid valve 14 of the clamping mechanism 6 loses power, the cylinder 9 is actuated, the pressure roller 13 is lifted upward, and the rebar 7 on the conveyor roller 1 is removed.

[0043] The above-mentioned device can lay the rebar 7 flat on the input roller and run it to the cold shearing process. After cold shearing, it can effectively avoid the appearance quality problems of the finished product such as elbows and triangular heads in the sheared section of the rebar 7. At the same time, there is no need for manual stripping of steel bars during shearing, and no need for manual bending and cutting of triangular heads after piling, which can greatly reduce labor costs, effectively improve the circulation of post-production line finishing, and improve the yield rate.

[0044] Example 2

[0045] On the basis of Example 1, Figures 2 - 4 As shown, it also includes an auxiliary cold shearing machine 2, which is arranged on the side wall of the conveyor roller 1. The auxiliary cold shearing machine 2 includes: a fixed frame 16, the fixed frame 16 is fixedly installed on the side wall of the conveyor roller 1, a servo motor 17 is fixedly installed on the inner wall of the front side of the fixed frame 16, a worm 18 is fixedly installed on the output shaft of the servo motor 17, a fixed plate 19 is fixedly installed on the inner wall of the fixed frame 16, and one end of the worm 18 rotates through the fixed plate 19 and is connected to a toggle assembly, a support plate 2 0 is fixedly mounted on the inner wall of the fixing frame 16, the rotating shaft 21 is rotatably connected to the supporting plate 20, and a worm gear 22 and a driving gear 23 are fixedly mounted on both ends of the rotating shaft 21, the worm gear 22 is meshed with the worm 18, a fixing plate 24 is fixedly mounted on the inner wall on the left side of the fixing frame 16, a slide rail 25 is embedded in the fixing plate 24, the rack 1 26 is slidably connected to the slide rail 25 through a slider 27, the rack 1 26 is meshed with the driving gear 23, and the rack 1 26 is used to drive the tail assembly.

[0046] Preferably, the tail assembly includes a drive motor 28, which is fixedly mounted on the side wall of the fixed plate 24, and the output shaft of the drive motor 28 is fixedly mounted with a drive shaft 29, a sleeve 30 is slidably connected to a slide groove 31 embedded in the drive shaft 29, and the sleeve 30 is rotatably connected to a connecting plate 33 through a sleeve 32, one side of the connecting plate 33 is fixedly connected to one end of the rack 1 26, and two baffles 34 are symmetrically fixedly mounted on the side wall of the sleeve 30 through a mounting rod 35.

[0047] Preferably, the toggle assembly includes: a driving pulley 36, which is fixedly mounted on the worm 18, a transmission shaft 37 is fixedly mounted on the inner wall on the left side of the fixed frame 16, a driven drive and an incomplete gear 39 are fixedly mounted on the transmission shaft 37 respectively, the driven pulley 38 is connected to the driving pulley 36 through a driving belt 40, an auxiliary box 41 is fixedly mounted on the rear side wall of the fixed frame 16 through a mounting plate 42, and one end of a driving rod 43 slides through the two side walls of the auxiliary box 41, and a plurality of toggle rods 44 are hinged on the driving rod 43 at a front-to-back interval, the middle parts of the plurality of toggle rods 44 are hinged to the inner wall of the bottom opening of the auxiliary box 41 through a hinge rod, and a spring 45 is sleeved on the driving rod 43, the spring 45 is fixedly connected to the inner wall of the auxiliary box 41, a rack 2 46 is fixedly mounted on one end of the driving rod 43, and the rack 2 46 meshes with the incomplete gear 39.

[0048] Preferably, it also includes a swing component 47, which is arranged on the rear side wall of the fixing frame 16, and the swing component 47 includes a guide rail 48, which is fixedly installed on the rear side wall of the fixing frame 16, and the bottom of the placement groove 49 is slidably connected to the guide rail 48, and the top of the placement groove 49 is embedded with a plurality of grooves 50, and a cam 51 is fixedly installed on the driving shaft 29, one end of the connecting rod 52 is hinged to the cam 51 away from the center, and the other end of the connecting rod 52 is hinged to the side wall of the placement groove 49.

[0049] The working principle and beneficial effects of the above technical solution are:

[0050] The auxiliary cold shearing machine 2 mechanism set up above can be used for pre-processing when the threaded steel bars 7 are transported to the anti-threaded steel bar 7 stacking device before the bar cold shearing, so that a number of threaded steel bars 7 are flattened and the tails of the disordered threaded steel bars 7 are aligned, which is convenient for subsequent cold shearing and improves the quality of the finished product of the threaded steel bars 7 after cold shearing. When the above mechanism pre-processes the threaded steel bars 7, the servo motor 17 is started, and the servo motor 17 can rotate forward and reversely. Then, the servo motor 17 drives the fixedly connected worm 18 to rotate. Through the meshing transmission of the worm gear 22 and the worm gear 18, the rotating shaft 21 fixedly connected to the worm gear 22 rotates synchronously, and the driving gear 23 fixedly connected to the rotating shaft 21 rotates synchronously. The rack 126 is slidably connected to the slide rail 25 through the slider 27. Under the meshing transmission of the driving gear 23 and the rack 126, the rack 126 moves left and right along the slide rail 25. At the same time, the rack 126 is fixed to the rack 126. The fixedly connected connecting plate 33 drives the sliding sleeve 30 to move left and right along the sliding groove 31 of the driving shaft 29, and then the driving motor 28 is started, driving the driving shaft 29 connected to the output shaft of the driving motor 28 to rotate, so that the sliding sleeve 30 slidably connected to the driving shaft 29 can rotate, thereby realizing the simultaneous rotation and left and right movement of the sliding sleeve 30, and the baffle 34 fixedly installed on the sliding sleeve 30 by the mounting rod 35 can rotate and move left and right, so that the tail of the threaded steel 7 on the conveyor roller 1 can be aligned, effectively ensuring the quality of the cross section of the threaded steel 7 after cold shearing, and the success rate of the finished product production.

[0051] By setting the toggle assembly, the driving pulley 36 fixedly connected to the worm 18 is rotated under the drive of the worm 18, and the driven pulley 38 is connected to the driving pulley 36 through the driving belt 40, so that the transmission shaft 37 fixedly connected to the driven pulley 38 is rotated, and the incomplete gear 39 fixedly connected to the transmission shaft 37 is also synchronously rotated left and right. Through the meshing transmission of the incomplete gear 39 and the rack 2 46, the rack 2 46 drives the driving rod 43 to slide forward and backward along the side wall of the auxiliary box 41. A plurality of toggle rods 44 are hinged on the driving rod 43 at intervals, and the middle part of the toggle rod 44 is hinged to the side wall of the bottom opening of the auxiliary box 41, so that the lower end of the toggle rod 44 swings back and forth, thereby realizing timely leveling of the rebar 7 transported on the conveyor roller 1 after stacking, so that the rebar 7 is laid flat on the conveyor roller 1 for subsequent cold shearing operations, effectively improving the quality of the shear section of the rebar 7.

[0052] Through the provided swinging component 47, the cam 51 is driven by the drive shaft 29 to rotate, causing the connecting rod 52 hinged at a position away from the center of the cam 51 to rotate around the drive shaft 29. At the same time, the placement groove 49 hinged at one end of the connecting rod 52 slides back and forth along the guide rail 48 under the action of the connecting rod 52, so that the deformed steel bars 7 conveyed in the placement groove 49 can be shaken, and thus a plurality of deformed steel bars 7 are gradually leveled with the shaking of the placement groove 49, thereby realizing the pretreatment of a plurality of deformed steel bars 7 before cold shearing operation, avoiding the disorder of the deformed steel bars 7 and affecting the cold shearing efficiency of the deformed steel bars 7.

[0053] Embodiment 3

[0054] Based on Embodiment 1 or 2, a device for preventing deformed steel bars from stacking before cold shearing of bars further includes a shearing performance detection device, which is used to detect the cold shearing effect after cold shearing the deformed steel bars using the device for preventing deformed steel bars from stacking before cold shearing of bars. The shearing performance detection device includes:

[0055] A speed sensor, which is used to detect the speed of the conveying roller table for conveying the deformed steel bars during cold shearing operation;

[0056] A pressure sensor, which is used to detect the pressure exerted by the cold shearer when shearing the deformed steel bars;

[0057] A controller and an alarm. The controller is electrically connected to the speed sensor, the pressure sensor and the alarm, and the controller controls the alarm to work based on the speed sensor and the temperature and pressure sensor.

[0058] Preferably, the controller controls the alarm to work based on the degree sensor and the temperature and pressure sensor, including the following steps:

[0059] Step 1: According to formula (1) and the detection value of the speed sensor, calculate the actual Poisson's ratio v of the deformed steel bar material when the deformed steel bar is cold sheared during the conveying of the device for preventing deformed steel bars from stacking before cold shearing of bars:

[0060]

[0061] Among them, v is the actual Poisson's ratio of the deformed steel bar material when the deformed steel bar is cold sheared during the conveying of the device for preventing deformed steel bars from stacking before cold shearing of bars, L is the length of the deformed steel bar to be cold sheared, ρ is the density of the deformed steel bar, V is the detection value of the speed sensor for the speed of the conveying roller table for conveying the deformed steel bar during cold shearing operation, A is the cross-sectional area of the deformed steel bar, β is the shear correction coefficient of the deformed steel bar (the value range is 0.85 - 1.05), and σ is the theoretical shear stress of the deformed steel bar;

[0062] Step 2: According to the following formula (2) and the detection value of the pressure sensor, calculate the actual buckling strength W of the rebar during cold shearing when the anti-rebar stacking device before cold shearing of the bar is conveying. The controller compares the actual buckling strength W of the rebar during cold shearing when the anti-rebar stacking device before cold shearing of the bar is conveying with the preset buckling strength range of the rebar. When the actual buckling strength of the rebar is not within the preset buckling strength range of the rebar, the controller controls the alarm to give an alarm:

[0063]

[0064] Wherein, W is the actual buckling strength of the rebar during cold shearing when the anti-rebar stacking device before cold shearing of the bar is conveying, α is the anti-shear coefficient of the rebar (obtained by looking up the table), E is the elastic modulus of the rebar (the value range is 0.25 - 0.35), λ is the maximum breaking tension coefficient of the rebar (obtained by looking up the table), H is the height of the cutting edge of the cold shear tool, A is the length of the cold shear tool, B is the width of the cold shear tool, d is the width of the cold shear tool, and F is the detection value of the pressure applied by the pressure sensor to the cold shear when shearing the rebar.

[0065] The beneficial effects of the above technical solution are as follows: First, according to formula (1) and the detection value of the speed sensor, calculate the actual Poisson's ratio of the rebar during cold shearing when the anti-rebar stacking device before cold shearing of the bar is conveying. By comprehensively considering the length of the rebar to be cold sheared, the density of the rebar, the speed of the conveying roller table for conveying the rebar during cold shearing, the cross-sectional area of the rebar, the shear correction coefficient of the rebar, and the theoretical shear stress of the rebar, the calculation result is made more accurate and reliable.

[0066] Then, according to formula (2), calculate the actual buckling strength of the rebar during cold shearing when the anti-rebar stacking device before cold shearing of the bar is conveying, and comprehensively consider the anti-shear coefficient of the rebar, the elastic modulus of the rebar, the maximum breaking tension coefficient of the rebar, the height of the cutting edge of the cold shear tool, the length of the cold shear tool, the width of the cold shear tool, the width of the cold shear tool, and the pressure applied by the cold shear when shearing the rebar, so that the calculation result is more accurate and reliable;

[0067] The controller controls the speed sensor, pressure sensor and alarm to work. When the anti-threaded steel stacking device before cold shearing of the current bar is transporting and the threaded steel is undergoing cold shearing operation, if the actual buckling strength of the threaded steel is not within the preset buckling strength range of the threaded steel, the controller controls the alarm to give an alarm, thereby reminding the staff to check the anti-threaded steel stacking device before cold shearing of the bar in time, and maintaining and servicing the anti-threaded steel stacking device before cold shearing of the bar according to the actual inspection results to meet the usage requirements of the anti-threaded steel stacking device before cold shearing of the bar. At the same time, it ensures the overall normal operation and shearing quality during the cold shearing operation of the threaded steel by the cold shearer, further meeting the usage requirements of the anti-threaded steel stacking device before cold shearing of the bar for operation reliability and stability. By monitoring the working state of the anti-threaded steel stacking device before cold shearing of the bar in real time during the operation process, it not only increases the reliability of the anti-threaded steel stacking device before cold shearing of the bar during the cold shearing operation by the cold shearer, but also ensures that the anti-threaded steel stacking device before cold shearing of the bar can be quickly detected and repaired in time after a failure.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for stacking threaded steel bars before cold shearing of bars, characterized in that: The invention comprises a conveyor roller (1), a cold shearing machine (2) is arranged on one side of the conveyor roller (1), an infrared detector (3) is arranged on the top of the conveyor roller (1), a vibrating screen (4) is embedded in the top of the conveyor roller (1), a vibrating motor (5) is fixedly mounted on the side wall of the conveyor roller (1), one side of the vibrating screen (4) is connected to the output shaft of the vibrating motor (5), a clamping mechanism (6) is arranged on one side of the vibrating screen (4), and the conveyor roller (1) is used to convey threaded steel (7).

2. The device for stacking threaded steel bars before cold shearing of bars according to claim 1 is characterized in that: The clamping mechanism (6) comprises a mounting frame (8), the bottom of the mounting frame (8) is fixedly mounted on the top of the conveying roller (1), the fixed end of the cylinder (9) is fixedly mounted on the top of the mounting frame (8) through a mounting bracket (10), the bottoms of two support seats (11) are fixedly mounted on the top of the conveying roller (1) symmetrically in front and back, one side of the mounting frame (12) is hinged to the telescopic end of the cylinder (9), and the two side walls of the mounting frame (12) are respectively hinged to the tops of the two support seats (11), and the two ends of the pressure roller (13) are hinged to the other side of the mounting frame (12).

3. The device for stacking anti-threaded steel bars before cold shearing of bars according to claim 2 is characterized in that: It also comprises a solenoid valve (14), which is fixedly mounted on the side wall of the conveying roller (1), and the solenoid valve (14) and the vibration motor (5) are electrically connected to the infrared detector (3).

4. The device for stacking thread-proof steel bars before cold shearing of bars according to claim 1 is characterized in that: The auxiliary cold shearing machine (2) is also included, and the auxiliary cold shearing machine (2) is arranged on the side wall of the conveying roller (1). The auxiliary cold shearing machine (2) includes: a fixed frame (16), the fixed frame (16) is fixedly mounted on the side wall of the conveying roller (1), the servo motor (17) is fixedly mounted on the inner wall of the front side of the fixed frame (16), the worm (18) is fixedly mounted on the output shaft of the servo motor (17), a fixed plate (19) is fixedly mounted on the inner wall of the fixed frame (16), and one end of the worm (18) rotates through the fixed plate (19) and is connected to a toggle assembly, and a support plate (20) is fixed The invention relates to a gear wheel (21) and a gear wheel (22) mounted on the inner wall of the fixed frame (16); the rotating shaft (21) is rotatably connected to the supporting plate (20); and a worm wheel (22) and a driving gear (23) are respectively fixedly mounted on both ends of the rotating shaft (21); the worm wheel (22) is meshed with the worm (18); a second fixed plate (24) is fixedly mounted on the inner wall on the left side of the fixed frame (16); a slide rail (25) is embedded in the second fixed plate (24); the rack (26) is slidably connected to the slide rail (25) through a slider (27); the rack (26) is meshed with the driving gear (23); and the rack (26) is used to drive the tail assembly.

5. The device for stacking thread-proof steel bars before cold shearing of bars according to claim 4 is characterized in that: The tail assembly comprises a driving motor (28), the driving motor (28) is fixedly mounted on the side wall of the second fixing plate (24), the output shaft of the driving motor (28) is fixedly mounted with a driving shaft (29), a sliding sleeve (30) is slidably connected to a sliding groove (31) embedded in the driving shaft (29), and the sliding sleeve (30) is rotatably connected to a connecting plate (33) through a shaft sleeve (32), one side of the connecting plate (33) is fixedly connected to one end of the first rack (26), and two baffles (34) are symmetrically fixedly mounted on the side wall of the sliding sleeve (30) through a mounting rod (35).

6. The device for stacking thread-proof steel bars before cold shearing of bars according to claim 4 is characterized in that: The shifting assembly comprises: a driving pulley (36), the driving pulley (36) is fixedly mounted on the worm (18), a transmission shaft (37) is fixedly mounted on the inner wall on the left side of the fixing frame (16), a driven drive and an incomplete gear (39) are respectively fixedly mounted on the transmission shaft (37), the driven pulley (38) is connected to the driving pulley (36) through a driving belt (40), an auxiliary box (41) is fixedly mounted on the rear side wall of the fixing frame (16) through a mounting plate (42), and one end of the driving rod (43) The auxiliary box (41) is slidably penetrated through the two side walls of the auxiliary box (41), and a plurality of toggle rods (44) are hingedly connected to the driving rod (43) at a front-rear interval, and the middle parts of the plurality of toggle rods (44) are hingedly connected to the inner wall of the bottom opening of the auxiliary box (41) through a hinge rod, and a spring (45) is sleeved on the driving rod (43), and the spring (45) is fixedly connected to the inner wall of the auxiliary box (41), and a second rack (46) is fixedly installed on one end of the driving rod (43), and the second rack (46) is meshed with the incomplete gear (39).

7. The device for stacking thread-proof steel bars before cold shearing of bars according to claim 1 is characterized in that: It also includes a swing assembly (47), which is arranged on the rear side wall of the fixing frame (16). The swing assembly (47) includes a guide rail (48), which is fixedly mounted on the rear side wall of the fixing frame (16). The bottom of the placement groove (49) is slidably connected to the guide rail (48), and the top of the placement groove (49) is embedded with a plurality of grooves (50). The cam (51) is fixedly mounted on the driving shaft (29), one end of the connecting rod (52) is hinged to the cam (51) away from the center, and the other end of the connecting rod (52) is hinged to the side wall of the placement groove (49).

8. The device for stacking threaded steel bars before cold shearing of bars according to claim 1 is characterized in that: It also includes a shearing performance testing device, which is used to test the cold shearing effect of the threaded steel after the cold shearing operation is performed on the threaded steel using the threaded steel stacking device before the cold shearing of the bar, and the shearing performance testing device includes: Speed ​​sensor, used to detect the speed of the conveyor roller conveying the rebar during cold shearing operation; Pressure sensor, used to detect the pressure applied by the cold shearing machine when shearing the rebar; A controller and an alarm, wherein the controller is electrically connected to the speed sensor, the pressure sensor and the alarm, and the controller controls the alarm to work based on the speed sensor and the temperature and pressure sensor.

9. The device for stacking anti-threaded steel bars before cold shearing of bars according to claim 8 is characterized in that: The controller controls the alarm to work based on the temperature sensor and the temperature and pressure sensor, including the following steps: Step 1: According to formula (1) and the detection value of the speed sensor, calculate the Poisson's ratio v of the actual material of the rebar when the rebar is cold sheared during transportation by the anti-rebar stacking device before the bar is cold sheared: Wherein, v is the actual Poisson's ratio of the rebar material when the rebar is cold sheared by the anti-rebar stacking device before the bar is cold sheared, L is the length of the rebar to be cold sheared, ρ is the density of the rebar, V is the detection value of the speed sensor for the speed of the rebar conveyed by the conveying roller during the cold shearing operation, A is the cross-sectional area of ​​the rebar, β is the shear correction coefficient of the rebar, and σ is the theoretical shear stress of the rebar; Step 2: According to the following formula (2) and the detection value of the pressure sensor, the actual buckling strength W of the threaded steel bar is calculated when the threaded steel bar is cold sheared during transportation by the anti-threaded steel bar stacking device before cold shearing of the current bar. The controller compares the actual buckling strength W of the threaded steel bar with the preset buckling strength range of the threaded steel bar when the anti-threaded steel bar stacking device before cold shearing of the current bar is cold sheared during transportation. When the actual buckling strength of the threaded steel bar is higher than the preset buckling strength range of the threaded steel bar, the controller controls the alarm to sound an alarm: Among them, W is the actual buckling strength of the rebar when the rebar is cold sheared during transportation by the anti-rebar stacking device before cold shearing of the bar, α is the shear resistance coefficient of the rebar, E is the elastic modulus of the rebar, λ is the maximum breaking tensile coefficient of the rebar, H is the height of the cold shear tool blade, A is the length of the cold shear tool, B is the width of the cold shear tool, d is the width of the cold shear tool, and F is the detection value of the pressure sensor on the pressure applied by the cold shear when shearing the rebar.

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