Efficient steel bar bending machine

Abstract

The invention relates to an efficient steel bar bending machine which comprises a box body, a chuck is arranged on the box body, a bending cylinder is rotationally connected into the box body, a mounting disc is coaxially arranged at the end of the bending cylinder, a bending roller used for bending is arranged on the mounting disc, and an arc groove in sliding fit with the bending roller is formed in the surface of the box body; a first motor and a speed reducing mechanism are arranged in the box body, the speed reducing mechanism comprises a speed reducing shell, a first rotating shaft, a second rotating shaft and a third rotating shaft are rotationally connected into the speed reducing shell, and the first rotating shaft is in transmission connection with an output shaft of the first motor through a first bevel gear set; the second rotating shaft is in transmission connection with the first rotating shaft through a second bevel gear set, one end of the third rotating shaft is in transmission connection with the second rotating shaft through a third bevel gear set, and the other end of the third rotating shaft is in transmission connection with the bending cylinder through a straight gear set. The electromagnetic clutch is used for controlling transmission connection and disconnection of the second rotating shaft and the third rotating shaft, and a reset assembly for driving the bending roller to reset is arranged in the box body. The bending machine has the effect of improving the bending efficiency of the bending machine.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of steel bar processing, and in particular to an efficient steel bar bending machine. BACKGROUND

[0002] The steel bar bending machine is a key equipment in steel bar production and processing, and in engineering construction such as buildings and bridges, and its core function is to bend straight steel bars into specific angles or shapes according to engineering design requirements, so as to meet the stress requirements of the steel bars in the concrete structure and guarantee the stability and safety of the engineering structure.

[0003] A steel bar bending machine is disclosed in Chinese Patent No. CN104259344B, which comprises a head box, a steel bar chuck is installed on the head box, a first motor and a speed reduction mechanism are installed inside, a driving pinion is installed on the output shaft of the first motor and the speed reduction mechanism, the driving pinion drives a bending output shaft through a speed reduction gear set, a crank that can rotate around the bending output shaft is connected to the rear end of the bending output shaft, a bending arm is fixedly connected to the free end of the crank, an arc slot is arranged on the head box, and the rear end of the bending arm extends out of the arc slot. When the bending action is performed, the first motor is started, the first motor and the speed reduction mechanism drive the bending output shaft to rotate through the driving pinion and the speed reduction gear set, and the bending output shaft drives the bending arm to move in the arc slot. At this time, the movement of the bending arm will drive the end of the steel bar to rotate and bend it.

[0004] However, the steel bar bending machine in the prior art needs to be transmitted through the speed reduction mechanism, the driving pinion and the speed reduction gear set in the power transmission process, which results in large energy loss in the power transmission process and low transmission efficiency, so that the power transmission time from the start of the bending arm to the completion of the bending of the steel bar is prolonged, the operation time of single bending is increased, and after the completion of the single bending operation, the first motor needs to be stopped and then reversely rotated to drive the bending arm to reset. In this process, the first motor needs to consume a certain starting time from the stop state to the reverse starting state, which reduces the resetting efficiency of the bending arm. The problems of prolonged power transmission time and insufficient resetting efficiency are mutually superimposed, which finally reduces the overall bending efficiency of the bending machine and cannot meet the demand of efficient production, which has obvious defects. SUMMARY

[0005] In order to improve the bending efficiency of the bending machine, the application provides an efficient steel bar bending machine.

[0006] The efficient steel bar bending machine provided by the application adopts the following technical scheme: The utility model provides a high -efficient steel bar bending machine, including the box, be provided with the chuck on the box, be rotatably connected with the bending cylinder in the inside, the end coaxial of bending cylinder is provided with the mounting disc, be provided with the bending roller for bending on the mounting disc, the surface of box is opened the arc groove of sliding cooperation with the bending roller, be provided with first motor and reduction mechanism in the inside of box, the reduction mechanism includes reduction shell, the inside rotatable connection of reduction shell has first rotation axis, second rotation axis and third rotation axis, first rotation axis passes through first helical gear set and the output shaft transmission of first motor is connected, second rotation axis passes through second helical gear set and first rotation axis transmission is connected, one end of third rotation axis passes through third helical gear set and second rotation axis transmission is connected, and the other end passes through straight gear set and bending cylinder transmission is connected, the end of second transmission axle is provided with electromagnetic clutch, and electromagnetic clutch is used for controlling second rotation axis and third rotation axis transmission on -off, be provided with reset assembly in the inside of box and drive the bending roller reset.

[0007] Through adopting the above technical scheme, when bending, the worker places the steel bar in the chuck and starts the first motor, the power of the first motor is transmitted to the third rotating shaft through the reduction mechanism, specifically, the first motor output shaft drives the first transmission shaft to rotate through the first helical gear set, the first transmission shaft drives the second transmission shaft to rotate through the second helical gear set, the electromagnetic clutch makes the power transmission of the second rotating shaft and the third rotating shaft in the on state, the second rotating shaft drives the third rotating shaft to rotate through the third helical gear set, then the third rotating shaft drives the bending cylinder to rotate through the straight gear set, the bending cylinder drives the bending roller to rotate in the arc groove, realizing the bending of the steel bar, compared with the power transmission process of the first motor, the reduction mechanism, the driving pinion and the reduction gear set in the prior art, the bending cylinder can be driven to rotate only through the first motor, the reduction mechanism and the straight gear set, the power transmission time from power output to steel bending completion is shortened, thereby reducing the overall time of single bending operation; when the bending is completed once, the electromagnetic clutch quickly cuts off the power transmission of the second transmission shaft and the third rotating shaft, then the reset assembly drives the bending cylinder to reverse rotation and reset, so that the starting and running time of the first motor is not needed, thereby improving the reset efficiency of the bending roller, so that the bending efficiency of the bending machine is improved, meeting the actual needs of efficient production.

[0008] Optionally, the reset assembly comprises a reset shaft rotatably connected to the inside of the box, a first sprocket is sleeved on the outer surface of the reset shaft, a first chain is engaged on the outer surface of the first sprocket, one end of the first chain is hingedly connected to the outer surface of the bending cylinder, and the other end is connected to the inner side wall of the box through a plurality of tension springs.

[0009] By adopting the technical scheme, during the steel bar bending operation, the first chain is pulled around the outer surface of the bending cylinder in the process of rotation of the bending cylinder, the other end of the first chain pulls the plurality of tension springs to be elastically deformed to store energy; when the bending operation is completed, the electromagnetic clutch cuts off the power transmission, the tension spring releases the stored elastic potential energy and pulls the first chain to reset, the first chain pulls the bending cylinder to rotate reversely in the resetting process, the bending roller reversely moves along the arc groove to the initial position to be ready for the next bending operation, the resetting assembly drives the resetting by direct release of the mechanical elastic potential energy, and the resetting does not need to rely on the stopping, reverse starting and power transmission process of the first motor, the resetting response is more rapid, and the resetting efficiency of the bending roller is improved.

[0010] Optionally, the box is internally provided with an angle detection assembly, the angle detection assembly comprises a connecting shaft rotatably connected to the inside of the box, the connecting shaft and the resetting shaft are both provided with second sprockets, the outer surfaces of the two second sprockets are engaged with a second chain, the second chain is provided with a detection sheet, the box is slidably connected with a proximity sensor for detecting the detection sheet, the proximity sensor is electrically connected to the electromagnetic clutch through a control system, the proximity sensor is fixed on the box through a clamping bolt, and the outer surface of the box is provided with an angle mark along the sliding direction of the proximity sensor.

[0011] By adopting the technical scheme, before starting the bending, the worker adjusts the proximity sensor to the corresponding position according to the preset bending angle and locks and fixes the proximity sensor according to the angle mark, in the bending process, the rotation of the bending cylinder drives the first sprocket and the resetting shaft to synchronously rotate, the resetting shaft drives the second sprocket to rotate in the rotating process, the second sprocket drives the second sprocket on the connecting shaft to rotate through the second chain, the second chain drives the detection sheet to stably move along the transmission track of the second chain, when the detection sheet moves to the detection area of the proximity sensor, the proximity sensor captures the detection sheet signal and makes the electromagnetic clutch lose power through the control system, so as to cut off the power transmission between the second rotating shaft and the third rotating shaft and terminate the bending action, so as to realize the automatic detection of the bending angle and the automatic cut-off of the power transmission, and manual observation and judgment of the bending angle are not needed, so as to further improve the bending efficiency of the bending machine.

[0012] Optionally, the box is provided with a supporting assembly, the supporting assembly comprises a fixed seat arranged on the surface of the box, a supporting seat is slidably connected to the fixed seat, a groove is formed in the supporting seat along the length direction, a locking stud is threadedly connected to the fixed seat and arranged in the groove, a fixed sheet is arranged on the locking stud, and the opposite surfaces of the fixed sheet and the supporting seat are provided with tooth grooves that are engaged with each other.

[0013] By adopting the technical scheme, after the reinforcing steel bar is placed in the clamp head, the worker first loosens the locking stud to make the tooth groove of the fixing plate and the support seat disengage, then slides the support seat until it abuts against the end of the reinforcing steel bar, tightens the locking stud after the adjustment is completed to make the two tooth grooves engage, at this time, the fixing seat is limited on the support seat, the possibility of displacement of the support seat due to stress during the bending operation is reduced, the support stability is ensured to form a stable support for the reinforcing steel bar, and thus the accuracy of the reinforcing steel bar bending is ensured.

[0014] Optionally, a support cylinder is fixedly arranged inside the box body, the bending cylinder is rotatably sleeved on the outer surface of the support cylinder through a bearing, the clamp head is insertedly arranged at the end of the support cylinder, a first air cylinder is arranged in the support cylinder, the output end of the first air cylinder is arranged towards the clamp head, a feeding table is arranged on one side of the box body close to the feeding end, a plurality of second air cylinders are arranged on the outer circumferential side of the feeding table, a load plate is commonly arranged on the piston rods of the plurality of second air cylinders, an upper feeding and correcting assembly for conveying the reinforcing steel bar is arranged on the load plate, and the proximity sensor is electrically connected to the first air cylinder and the second air cylinder through a control system.

[0015] By adopting the technical scheme, when the proximity sensor is triggered, the first air cylinder and the second air cylinder are synchronously extended, the load plate and the clamp head are synchronously lifted to drive the reinforcing steel bar to rise, at this time, the reinforcing steel bar and the bending roller have a height difference, so that the resetting of the resetting assembly and the conveying of the upper feeding and correcting assembly do not interfere with each other, the feeding process of the next reinforcing steel bar can be started without waiting for the bending roller to be completely reset, the resetting and feeding processes are synchronously performed, the process connection time of multiple bending of one reinforcing steel bar is shortened, and thus the bending efficiency of the steel pipe is further improved.

[0016] Optionally, the upper feeding and correcting assembly comprises a plurality of mounting plates slidably connected to the surface of the load plate, a sliding groove is formed in each mounting plate, two clamping seats are slidably connected in each sliding groove, a first correcting wheel is rotatably connected in each clamping seat, a guide groove corresponding to each clamping seat is formed in the load plate, a guide wheel is arranged on each clamping seat and slidably matched with the guide groove, the guide groove comprises a running groove and a back-off groove arranged in parallel, the running groove is arranged on one side of the back-off groove close to the center of the sliding groove, the opposite ends of the running groove are communicated with the back-off groove through a connecting groove, the connecting groove is inclined towards the center of the sliding groove along the direction close to the running groove, and a driving assembly for driving the plurality of mounting plates to reciprocate along the feeding table is arranged on the feeding table.

[0017] By adopting the technical scheme, in the initial state, the mounting plate is located inside the connecting groove close to the feeding end, at this time, the two clamping seats are away from each other, so that the worker can place the steel bar between the two clamping seats, after the placement is completed, the driving assembly is started, the driving assembly drives the plurality of mounting plates to move back and forth along the feeding table, the mounting plate drives the guide wheel to move in the guide groove, in the process that the mounting plate moves from the connecting groove to the advancing groove, under the guidance of the extending structure of the connecting groove towards the center of the sliding groove, the two clamping seats are close to each other along the sliding groove, when moving to the inside of the advancing groove, the first correcting wheel on the two clamping seats abuts against the radial two sides of the steel bar in the horizontal direction, the automatic centering and clamping of the steel bar are realized, and with the movement of the mounting plate in the advancing groove, the clamping seat drives the clamped steel bar to move towards the box until entering the inside of the chuck, and in the process that the steel bar moves, the slight bending on the surface of the steel bar is corrected by the rolling action of the correcting wheel, so that the steel bar keeps good straightness to enter the inside of the chuck, the setting of the feeding and correcting assembly realizes the automatic clamping and conveying of the steel bar, manual positioning and clamping are not needed, so that the feeding efficiency of the steel bar is improved; after single feeding or correction is completed, the driving assembly drives the mounting plate to move back to the return groove direction, the guide wheel guides the clamping seat to move away from each other along the sliding groove along the inclined structure of the connecting groove, and is automatically reset to the open state, so that sufficient space is reserved for the feeding of the next steel bar, and manual resetting of the clamping seat is not needed.

[0018] Optionally, the driving assembly comprises a reciprocating screw rod rotationally connected to one side of the bearing plate, a reciprocating groove corresponding to each of the plurality of mounting plates is formed in the reciprocating screw rod, the reciprocating groove is formed by a left spiral groove and a right spiral groove connected at the head and tail, a nut block is slidably connected in the reciprocating groove by a convex tooth, the nut block is arranged on the corresponding mounting plate, a guide column is arranged on the side of the bearing plate away from the reciprocating screw rod, the end of the mounting plate away from the nut block is slidably arranged on the outer surface of the guide column, and a second motor for driving the reciprocating screw rod to rotate is arranged on the bearing plate.

[0019] By adopting the technical scheme, after the steel bar is placed, the second motor is started to drive the reciprocating screw rod to rotate, under the guidance of the guide column, the reciprocating screw rod drives the plurality of nut blocks to move back and forth along the reciprocating groove when rotating, and the nut block drives the mounting plate to move back and forth along the guide groove when moving, so that the clamping and feeding process of the steel bar is realized.

[0020] Optionally, a plurality of moving grooves are formed in the mounting plate, a moving column is slidably connected in each of the moving grooves, a connecting plate is commonly arranged on the plurality of moving columns, a second correcting wheel is arranged in the middle of the connecting plate, a driving rod is hingedly connected to each of the clamping seats, and the end of the driving rod away from the clamping seat is hingedly connected to the connecting plate, when the clamping seat is arranged in the return groove, the second correcting wheel abuts against the surface of the mounting plate.

[0021] By adopting the technical scheme, when the installation plate is moved from the running groove to the inside of the connecting groove, the clamping seats are away from each other along the sliding grooves under the guidance of the connecting groove, the connecting plate is driven to move downward by the hinged driving rod when the two clamping seats are away from each other, the second correcting wheel on the connecting plate abuts against the upper surface of the steel bar when the guide wheel moves to the inside of the back-off groove, and the surface of the bearing plate forms the bending degree of the steel bar in the vertical direction, so that the clamping seat realizes further correction of the steel bar in the resetting process, without additional power source or manual operation, the correction state of the first correcting wheel and the second correcting wheel can be automatically completed with the position switching of the clamping seat, and the simultaneous performance of the steel bar feeding and double correction is realized.

[0022] To sum up, the present application has at least one of the following beneficial technical effects: 1. The present application sets up the straight gear set, the electromagnetic clutch and the reset assembly, drives the reduction mechanism and the bending cylinder through the straight gear set, shortens the power transmission time from the power output to the completion of the steel bar bending, thereby reducing the overall time of single bending operation, controls the transmission state between the second transmission shaft and the third rotation shaft through the electromagnetic clutch, and then the reset assembly drives the bending cylinder to reset reversely, so that the starting and running time of the first motor is not needed, thereby improving the resetting efficiency of the bending roller, and the mutual cooperation of the two improves the bending efficiency of the bending machine, and meets the actual needs of efficient production. 2. The present application sets up the angle adjusting assembly, and pre-adjusts the rotation angle of the bending roller through the adjusting assembly, without manual observation and judgment of the bending angle, thereby further improving the bending efficiency of the bending machine. 3. The present application sets up the feeding and correcting assembly, the setting of the feeding and correcting assembly realizes automatic feeding of the steel bar, and the steel bar correction state of the first correcting wheel and the second correcting wheel can be automatically switched according to the position of the clamping seat in the feeding process, so that the feeding and double correction process of the steel bar are simultaneously performed, thereby further improving the bending efficiency of the bending machine. 4. The present application sets up the first driving air cylinder and the second driving air cylinder, after the bending roller moves to the position, the first air cylinder and the second air cylinder are triggered by the proximity sensor to synchronously extend the piston rods, the bearing plate and the chuck synchronously rise to drive the steel bar to rise, at this time, the steel bar and the bending roller have a height difference, so that the resetting process of the reset assembly and the feeding process of the feeding and correcting assembly do not interfere with each other, and the feeding process of the next section of steel bar can be started without waiting for the complete resetting of the bending roller. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present application.

[0024] Figure 2 It is a structural schematic diagram of the reset assembly inside the box body in the embodiment of the present application.

[0025] Figure 3 is a structural schematic view of a speed reduction mechanism in the embodiment of the present application.

[0026] Figure 4 is a sectional view of a supporting cylinder in the embodiment of the present application.

[0027] Figure 5 is a structural schematic view of a feeding and correcting assembly in the embodiment of the present application.

[0028] Figure 6 is a sectional view of a mounting seat in the embodiment of the present application.

[0029] Legend: 1, box body; 101, arc groove; 102, first motor; 103, adjusting groove; 104, angle mark; 2, supporting cylinder; 21, chuck; 22, bending cylinder; 23, mounting disc; 24, bending roller; 25, first air cylinder; 3, supporting assembly; 31, fixing seat; 32, supporting seat; 321, groove; 33, locking stud; 34, fixing sheet; 4, speed reduction mechanism; 41, speed reduction shell; 42, first rotating shaft; 43, second rotating shaft; 44, third rotating shaft; 45, first helical gear set; 451, large helical gear; 452, small helical gear; 46, second helical gear set; 47, third helical gear set; 48, electromagnetic clutch; 5, spur gear set; 6, resetting assembly; 61, resetting shaft; 62, first sprocket; 63, first chain; 64, tension spring; 7, angle detecting assembly; 71, connecting shaft; 72, second sprocket; 73, second chain; 74, detecting sheet; 75, proximity sensor; 76, sliding sheet; 77, abutting bolt; 8, feeding table; 81, second air cylinder; 82, bearing plate; 9, feeding and correcting assembly; 91, mounting plate; 911, sliding groove; 912, moving groove; 92, clamping seat; 93, first correcting wheel; 94, guide wheel; 95, moving column; 96, connecting plate; 97, second correcting wheel; 98, driving rod; 10, guide groove; 1001, advancing groove; 1002, retreating groove; 1003, linking groove; 11, driving assembly; 111, reciprocating screw rod; 1111, reciprocating groove; 112, nut block; 113, guide column; 114, second motor. DETAILED DESCRIPTION

[0030] The following will be described in detail with reference to the accompanying drawings. Figures 1-6 The present application will be further described in detail.

[0031] The embodiment of the present application discloses a high-efficiency reinforcing steel bar bending machine.

[0032] Reference will be made to Figure 1 and Figure 2The utility model provides a high -efficient steel bar bending machine, including box 1, fixedly installed with support cylinder 2 in the box 1, the end of support cylinder 2 is close to the top wall of box 1 and is inserted with chuck 21 through the spline cooperation, chuck 21 is placed on the surface of box 1, and the width of horizontal groove of chuck 21 is adapted to the diameter of the bent steel bar, and the outer circumferential side of support cylinder 2 is rotatably connected with bending cylinder 22 through ball bearing, and the end of bending cylinder 22 is coaxially fixedly connected with mounting disc 23, and bending roller 24 for bending is installed on mounting disc 23, and the axis of bending roller 24 is parallel to the axis of bending cylinder 22, and the top surface of box 1 is provided with arc groove 101 in sliding fit with bending roller 24.

[0033] With reference to Figure 1 And Figure 2 The top surface of box 1 is provided with support assembly 3, support assembly 3 includes fixed seat 31 fixedly installed on the surface of box 1, fixed seat 31 is slidably connected with support seat 32 along the length direction, support seat 32 is L-shaped, and the vertical section of support seat 32 is used to support the steel bar, and the recess 321 is formed in the length direction of support seat 32, the locking stud 33 is threadedly connected with the recess 321, the fixed sheet 34 is threaded on the locking stud 77, and the tooth groove (not shown in the figure) is formed on the opposite surface of fixed sheet 34 and support seat 32.

[0034] When bending preparation work, the steel bar is conveyed to the inside of chuck 21 by artificial or feeding mechanism, then the worker loosens locking stud 33 to make the tooth groove of fixed sheet 34 and support seat 32 disengage, then the support seat 32 is slid until it abuts against the end of the steel bar, after adjustment, locking stud 33 is tightened to make the two tooth grooves engage, at this time, fixed seat 31 is limited on support seat 32, and support seat 32 forms stable support to the steel bar.

[0035] With reference to Figure 2 And Figure 3The housing 1 houses a first motor 102 and a reduction mechanism 4. The reduction mechanism 4 includes a reduction housing 41 installed inside the housing 1. Inside the reduction housing 41, along the direction from the first motor 102 to the support cylinder 2, a first rotating shaft 42, a second rotating shaft 43, and a third rotating shaft 44 are sequentially rotatably connected. The first rotating shaft 42 is connected to the output shaft of the first motor 102 via a first helical gear set 45. The second rotating shaft 43 is connected to the first rotating shaft 42 via a second helical gear set 46. The third rotating shaft 44 is connected to the second rotating shaft 43 via a third helical gear set 47. It should be noted that in this embodiment, the first helical gear set 45, the second helical gear set 46, and the third helical gear set 47 are all composed of large helical gears 451 and small helical gears 452 with different diameters. The large helical gears 451 and small helical gears 452 on the first rotating shaft 42 and the third rotating shaft 44 are integrally formed with the shaft body. The small helical gear 452 on the second rotating shaft 43 is integrally formed with the shaft body. The large helical gear 451 is rotatably sleeved on the outer surface of the second rotating shaft 43 through ball bearings. One end of the third rotating shaft 44 extends out a reduction housing 41 and is connected to the bending cylinder 22 through the spur gear set 5.

[0036] Reference Figure 2 and Figure 3 An electromagnetic clutch 48 is connected to the end of the second drive shaft. The electromagnetic clutch 48 is used to control the transmission on and off of the large helical gear 451 in the second helical gear set 46 and the small helical gear 452 in the third helical gear set 47 on the second rotating shaft 43. That is, the electromagnetic clutch 48 is used to control the transmission on and off of the second rotating shaft 43 and the third rotating shaft 44. The electromagnetic clutch 48 controls the engagement and disengagement of the clutch state by electromagnetic control, which is the prior art in the field of electric drive. The specific composition and implementation will not be described in this embodiment.

[0037] Reference Figure 2 and Figure 3 The housing 1 is equipped with a reset assembly 6. The reset assembly 6 includes a reset shaft 61 rotatably connected inside the housing 1. A first sprocket 62 is fixedly sleeved on the outer surface of the reset shaft 61. A first chain 63 is meshed on the outer surface of the first sprocket 62. One end of the first chain 63 is hinged to the outer surface of the bending cylinder 22, and the other end is connected to a tension spring 64. The end of the tension spring 64 away from the first chain 63 is connected to the inner side wall of the housing 1. When the bending roller 24 stops at the initial position of the arc groove 101, the tension spring 64 is in a natural state without stored energy.

[0038] After preparation, the worker starts the first motor 102 to drive the bending cylinder 22 to rotate. Specifically, the output shaft of the first motor 102 drives the first transmission shaft to rotate through the first helical gear set 45. The first transmission shaft drives the second transmission shaft to rotate through the second helical gear set 46. At this time, the electromagnetic clutch 48 connects the power transmission between the second rotating shaft 43 and the third rotating shaft 44. The second rotating shaft 43 drives the third rotating shaft 44 to rotate through the third helical gear set 47. Subsequently, the third rotating shaft 44 drives the bending cylinder 22 to rotate through the spur gear set 5. When the bending cylinder 22 rotates, it pulls the end of the first chain 63 around. Located on the outer surface of the bending cylinder 22, the other end of the first chain 63 pulls multiple tension springs 64 to undergo elastic deformation and store energy. At the same time, the bending cylinder 22 drives the mounting plate 23 to rotate, and the mounting plate 23 drives the bending roller 24 to rotate in the arc groove 101, thereby realizing the bending of the steel bar. Compared with the power transmission process of the motor, reduction mechanism 4, driving pinion and reduction gear set in the prior art, this application only needs to drive the bending cylinder 22 to rotate through the first motor 102, reduction mechanism 4 and spur gear set 5, which shortens the power transmission time from power output to the completion of steel bar bending, thereby reducing the overall time of a single bending operation. After a bend is completed, the electromagnetic clutch 48 quickly cuts off the power transmission between the second drive shaft and the third rotating shaft 44. The tension spring 64 releases the stored elastic potential energy and pulls the first chain 63 to reset. During the reset process, the first chain 63 pulls the bending cylinder 22 to rotate in the opposite direction. The bending roller 24 moves in the opposite direction along the arc groove 101 to the initial position to prepare for the next bending operation. The reset component 6 is driven to reset by the direct release of mechanical elastic potential energy, without relying on the motor to stop, reverse start and power transmission process. The reset response is faster and the reset efficiency of the bending roller 24 is improved. This reduces the overall bending time of the steel bar and improves the bending efficiency of the bending machine.

[0039] Reference Figure 2 and Figure 4 An angle detection component 7 is installed inside the housing 1. The angle detection component 7 includes a connecting shaft 71 rotatably connected inside the housing 1. A second sprocket 72 is coaxially fixedly connected to both the connecting shaft 71 and the reset shaft 61. A second chain 73 is sleeved on the outer surface of the two second sprockets 72. The second chain 73 is meshed with the second sprockets 72. A detection plate 74 is fixedly connected to the second sprocket 72. A proximity sensor 75 for detecting the detection plate 74 is slidably connected inside the housing 1. The proximity sensor 75 is electrically connected to the electromagnetic clutch 48 through the control system. The specific control principle is existing technology and will not be described in detail in this embodiment.

[0040] Reference Figure 1 , Figure 2 and Figure 4A sliding plate 76 is fixedly connected to the detection sensor. An adjustment groove 103 is provided on the outer surface of the housing 1 to slide and connect with the sliding plate 76. The sliding plate 76 is fixed to the outer surface of the housing 1 by abutting bolts 77. An angle mark 104 is provided on the outer surface of the housing 1 along the direction of the adjustment groove 103. In this embodiment, there are two angle detection components 7, so that the worker can set two consecutive bending angles to realize sequential bending operations.

[0041] Before starting the bending, the worker adjusts the proximity sensor 75 to the corresponding position and locks it in place according to the preset bending angle and the angle mark 104. During the bending process, the rotation of the bending cylinder 22 drives the first sprocket 62 and the reset shaft 61 to rotate synchronously. During the rotation of the reset shaft 61, the second sprocket 72 is driven to rotate. The second sprocket 72 drives the second sprocket 72 on the connecting shaft 71 to rotate through the second chain 73, so that the second chain 73 drives the detection piece 74 to move smoothly along the transmission trajectory of the second chain 73. When the detection piece 74 moves to the detection area of ​​the proximity sensor 75, the proximity sensor 75 captures the signal of the detection piece 74 and de-energizes the electromagnetic clutch 48 through the control system, thereby cutting off the power transmission between the second rotating shaft 43 and the third rotating shaft 44 and terminating the bending action. In this way, the automatic detection of the bending angle and the automatic cutting off of the power transmission are realized.

[0042] Reference Figure 1 and Figure 4 To further improve the bending efficiency of the steel bars, a first cylinder 25 is installed inside the housing 1. The first cylinder 25 is located inside the support cylinder 2 and its output end faces the clamp 21. A feeding platform 8 is provided on the side of the housing 1 near the feeding end. Four second cylinders 81 are fixedly installed on the outer surface of the feeding platform 8 along the circumference. A bearing plate 82 is connected to the piston rod of the four second cylinders 81. A feeding and straightening assembly 9 for conveying steel bars is provided on the bearing plate 82. A proximity sensor 75 is electrically connected to the first cylinder 25 and the second cylinders 81 through the control system.

[0043] After the bending roller 24 moves into position, the proximity sensor 75 is triggered, causing the piston rods of the first cylinder 25 and the second cylinder 81 to extend synchronously. The bearing plate 82 and the clamp 21 rise synchronously, driving the steel bar to rise. At this time, a height difference is generated between the steel bar and the bending roller 24, so that the resetting process of the resetting component 6 on the bending roller 24 and the conveying process of the feeding and straightening component 9 on the steel bar do not interfere with each other. The feeding process of the next section of steel bar can be started without waiting for the bending roller 24 to be fully reset, shortening the process connection time of bending a steel bar multiple times, thereby further improving the bending efficiency of the steel pipe.

[0044] Reference Figure 1 and Figure 5The feeding and straightening assembly 9 includes multiple mounting plates 91 slidably connected to the surface of the support plate 82. The mounting plates 91 are parallel to the width direction of the support plate 82. In this embodiment, there are two mounting plates 91. The mounting plates 91 have sliding grooves 911 along their length. In this embodiment, the cross-section of the sliding groove 911 is cross-shaped. The center line of the sliding groove 911 is collinear with the center line of the clamp 21. Each sliding groove 911 has a clamping seat 92 slidably connected to opposite sides inside. The clamping seat 92 is rotatably connected to a first straightening wheel 93 on the side of the clamping seat 92 closest to the center of the sliding groove 911. The two first straightening wheels 93 are symmetrical about the center of the sliding groove 911.

[0045] Reference Figure 5 and Figure 6 The bearing plate 82 has guide grooves 10 corresponding to four clamping seats 92. The cross-section of the guide groove 10 is inverted T-shaped. The clamping seat 92 is rotatably connected to the guide wheel 94 that slides with the guide groove 10. The guide groove 10 includes a traveling groove 1001 and a retraction groove 1002 arranged relatively parallel to each other. Both the traveling groove 1001 and the retraction groove 1002 are parallel to the direction of steel bar conveying. The traveling groove 1001 is located near the center of the sliding groove 911, and the retraction groove 1002 is located at the edge of the bearing plate 82. The two opposite ends of the traveling groove 1001 are connected to the retraction groove 1002 through the connecting groove 1003. The connecting groove 1003 is inclined towards the center of the sliding groove 911 in the direction close to the traveling groove 1001. When the guide wheel 94 on the clamping seat 92 moves into the traveling groove 1001, the two first straightening wheels 93 respectively abut against the radial sides of the steel bar.

[0046] Reference Figure 5 and Figure 6 Each mounting plate 91 has a movable groove 912 at its four edges. A movable column 95 is slidably connected inside each movable groove 912. The ends of four movable columns 95 extend out of the movable grooves 912 and are connected to a connecting plate 96. A second straightening wheel 97 for straightening reinforcing bars is rotatably connected to the center of the connecting plate 96. A drive rod 98 is hinged to the top of each clamping seat 92. The end of the drive rod 98 away from the clamping seat 92 is hinged to the inner top wall of the connecting plate 96. The two drive rods 98 are symmetrical about the sliding groove 911. When the guide wheel 94 on the clamping seat 92 moves into the return groove 1002, the second straightening wheel 97 presses the reinforcing bar against the surface of the mounting plate 91. Reference Figure 5 and Figure 6The loading platform 8 is equipped with a drive assembly 11, which includes a reciprocating screw 111 rotatably connected to one side of the bearing plate 82. The reciprocating screw 111 has reciprocating grooves 1111 corresponding to the two mounting plates 91 along the axial direction. Each reciprocating groove 1111 is formed by a left helical groove and a right helical groove connected end to end. A nut block 112 is slidably connected to the inside of each reciprocating groove 1111. The nut block 112 is fixedly installed on one side of the mounting plate 91. A guide post 113 is fixedly connected to the side of the bearing plate 82 away from the reciprocating screw 111. The end of the mounting plate 91 away from the nut block 112 is slidably sleeved on the outer surface of the guide post 113. A second motor 114 is fixedly installed on the bearing plate 82. The output shaft of the second motor 114 is coaxially fixedly connected to the reciprocating screw 111.

[0047] Before the material is loaded, the mounting plate 91 is located inside the connecting groove 1003 near the feeding end. At this time, the first straightening wheels 93 on the two clamping seats 92 are far apart from each other, which makes it easier for the worker to place the steel bar between the two clamping seats 92. After the placement is completed, the second motor 114 is started. The second motor 114 drives the reciprocating screw 111 to rotate. Under the guidance of the guide column 113, when the reciprocating screw 111 rotates, it will drive multiple nut blocks 112 to move back and forth along the reciprocating groove 1111. The nut blocks 112 drive the guide wheel 94 on the mounting plate 91 to move back and forth along the guide groove 10. As the guide wheel 94 moves from the connecting groove 1003 toward the traveling groove 1001, guided by the connecting groove 1003 extending toward the center of the sliding groove 911, the two clamping seats 92 move closer to each other along the sliding groove 911. When they move into the traveling groove 1001, the first straightening wheels 93 on the two clamping seats 92 abut against the radial sides of the steel bar in the horizontal direction, realizing automatic centering clamping of the steel bar. As the mounting plate 91 continues to move in the traveling groove 1001, the clamping seats 92 drive the clamped steel bar to move toward the box 1 until it enters the chuck 21. During the movement of the steel bar, the rolling action of the straightening wheels corrects the slight bending of the steel bar surface, ensuring that the steel bar maintains good straightness when entering the chuck 21. This realizes automatic clamping and conveying of the steel bar, eliminating the need for manual positioning and clamping by workers, thereby improving the feeding efficiency of the steel bar. When the mounting plate 91 moves from the travel groove 1001 into the connecting groove 1003, under the guidance of the connecting groove 1003, the clamping seats 92 move away from each other along the sliding groove 911. When the two clamping seats 92 move away from each other, the connecting plate 96 is pulled downward by the hinged drive rod 98. When the guide wheel 94 moves from the connecting groove 1003 into the return groove 1002, the second straightening wheel 97 on the connecting plate 96 abuts against the upper surface of the steel bar. As the mounting plate 91 continues to move in the return groove 1002, the second straightening wheel 97 corrects the bending of the steel bar in the vertical direction along the length of the steel bar, thereby achieving further correction during the steel bar feeding process. The correction state of the first straightening wheel 93 and the second straightening wheel 97 can be automatically completed as the position of the clamping seat 92 switches, realizing the synchronous operation of steel bar feeding and double correction.

[0048] The implementation principle of a high-efficiency rebar bending machine according to an embodiment of this application is as follows: During bending, after the worker places the rebar inside the clamp 21, the first motor 102 is started. The output shaft of the first motor 102 drives the first transmission shaft to rotate through the first helical gear set 45. The first transmission shaft drives the second transmission shaft to rotate through the second helical gear set 46. At this time, the electromagnetic clutch 48 connects the power transmission between the second rotating shaft 43 and the third rotating shaft 44. The second rotating shaft 43 drives the third rotating shaft 44 to rotate through the third helical gear set 47. Subsequently, the third rotating shaft 44 drives the bending cylinder 22 to rotate through the spur gear set 5. When the bending cylinder 22 rotates, it pulls the first... The end of a chain 63 is wound around the outer surface of the bending cylinder 22. The other end of the first chain 63 pulls multiple tension springs 64 to undergo elastic deformation and store energy. At the same time, the bending cylinder 22 drives the mounting plate 23 to rotate. The mounting plate 23 drives the bending roller 24 to rotate in the arc groove 101, thereby achieving the bending of the steel bar. Compared with the power transmission process of the motor, reduction mechanism 4, driving pinion and reduction gear set in the prior art, this application only needs to drive the bending cylinder 22 to rotate through the first motor 102, reduction mechanism 4 and spur gear set 5, which shortens the power transmission time from power output to the completion of steel bar bending, thereby reducing the overall time of a single bending operation. After a bend is completed, the electromagnetic clutch 48 quickly cuts off the power transmission between the second drive shaft and the third rotating shaft 44. The tension spring 64 releases the stored elastic potential energy and pulls the first chain 63 to reset. During the reset process, the first chain 63 pulls the bending cylinder 22 to rotate in the opposite direction. The bending roller 24 moves in the opposite direction along the arc groove 101 to the initial position to prepare for the next bending operation. The reset component 6 is driven to reset by the direct release of mechanical elastic potential energy, without relying on the motor to stop, reverse start and power transmission process. The reset response is faster and the reset efficiency of the bending roller 24 is improved. This reduces the overall bending time of the steel bar and improves the bending efficiency of the bending machine.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-efficiency rebar bending machine, comprising a housing (1), wherein a clamp (21) is provided on the housing (1), and a bending cylinder (22) is rotatably connected inside the housing (1), wherein an mounting plate (23) is coaxially provided at the end of the bending cylinder (22), and a bending roller (24) for bending is provided on the mounting plate (23), wherein an arc groove (101) is provided on the surface of the housing (1) for sliding cooperation with the bending roller (24), characterized in that, The housing (1) is equipped with a first motor (102) and a reduction mechanism (4). The reduction mechanism (4) includes a reduction housing (41). A first rotating shaft (42), a second rotating shaft (43), and a third rotating shaft (44) are rotatably connected inside the reduction housing (41). The first rotating shaft (42) is connected to the output shaft of the first motor (102) via a first helical gear set (45). The second rotating shaft (43) is connected to the first rotating shaft (42) via a second helical gear set (46). The transmission connection is as follows: one end of the third rotating shaft (44) is connected to the second rotating shaft (43) through the third helical gear set (47), and the other end is connected to the bending cylinder (22) through the spur gear set (5). An electromagnetic clutch (48) is provided at the end of the second transmission shaft. The electromagnetic clutch (48) is used to control the transmission between the second rotating shaft (43) and the third rotating shaft (44). A reset assembly (6) is provided inside the housing (1) to drive the bending roller (24) to reset.

2. The high-efficiency steel bar bending machine according to claim 1, characterized in that, The reset assembly (6) includes a reset shaft (61) rotatably connected inside the housing (1). A first sprocket (62) is sleeved on the outer surface of the reset shaft (61). A first chain (63) is meshed on the outer surface of the first sprocket (62). One end of the first chain (63) is hinged to the outer surface of the bending cylinder (22), and the other end is connected to the inner wall of the housing (1) through multiple tension springs (64).

3. The high-efficiency steel bar bending machine according to claim 2, characterized in that, An angle detection assembly (7) is provided inside the housing (1). The angle detection assembly (7) includes a connecting shaft (71) rotatably connected inside the housing (1). A second sprocket (72) is provided on both the connecting shaft (71) and the reset shaft (61). A second chain (73) is meshed on the outer surfaces of the two second sprockets (72). A detection piece (74) is provided on the second chain (73). A proximity sensor (75) for detecting the detection piece (74) is slidably connected inside the housing (1). The proximity sensor (75) is electrically connected to the electromagnetic clutch (48) through the control system. The proximity sensor (75) is fixed on the housing (1) by a clamping bolt (77). An angle mark (104) is provided on the outer surface of the housing (1) along the sliding direction of the proximity sensor (75).

4. The high-efficiency steel bar bending machine according to claim 1, characterized in that, The housing (1) is provided with a support assembly (3), which includes a fixed seat (31) disposed on the surface of the housing (1). A support seat (32) is slidably connected to the fixed seat (31). The support seat (32) has a groove (321) along its length. A locking stud (33) threadedly connected to the fixed seat (31) is disposed inside the groove (321). A fixing piece (34) is disposed on the locking stud (33). The surfaces of the fixing piece (34) and the support seat (32) opposite to each other have meshing toothed grooves.

5. A high-efficiency steel bar bending machine according to claim 3, characterized in that, A support cylinder (2) is fixedly installed inside the housing (1). The bending cylinder (22) is rotatably sleeved on the outer surface of the support cylinder (2) through a bearing. The clamp (21) is inserted into the end of the support cylinder (2). A first cylinder (25) is installed inside the support cylinder (2). The output end of the first cylinder (25) is set towards the clamp (21). A loading platform (8) is provided on the side of the housing (1) near the feeding end. Multiple second cylinders (81) are provided on the outer periphery of the loading platform (8). A bearing plate (82) is provided on the piston rod of the multiple second cylinders (81). A loading and straightening assembly (9) for conveying steel bars is provided on the bearing plate (82). The proximity sensor (75) is electrically connected to the first cylinder (25) and the second cylinders (81) through the control system.

6. A high-efficiency steel bar bending machine according to claim 5, characterized in that, It also includes a loading platform (8), and the loading and straightening assembly (9) includes multiple mounting plates (91) slidably connected to the surface of the bearing plate (82). Each mounting plate (91) has a sliding groove (911), and each sliding groove (911) has two clamping seats (92) slidably connected inside. A first straightening wheel (93) is rotatably connected inside each clamping seat (92). The bearing plate (82) has guide grooves (10) corresponding one-to-one with each of the clamping seats (92). Each clamping seat (92) is provided with a guide wheel (94) that slidably engages with the guide groove (10). The device includes a traveling groove (1001) and a retracting groove (1002) arranged in parallel. The traveling groove (1001) is located on the side of the retracting groove (1002) near the center of the sliding groove (911). Both ends of the traveling groove (1001) are connected to the retracting groove (1002) through connecting grooves (1003). The connecting grooves (1003) are inclined toward the center of the sliding groove (911) in a direction close to the traveling groove (1001). The loading platform (8) is provided with a drive assembly (11) that drives multiple mounting plates (91) to reciprocate along the loading platform (8).

7. A high-efficiency steel bar bending machine according to claim 6, characterized in that, The drive assembly (11) includes a reciprocating screw (111) rotatably connected to one side of the support plate (82). The reciprocating screw (111) has reciprocating grooves (1111) corresponding to the plurality of mounting plates (91). The reciprocating grooves (1111) are formed by connecting left and right helical grooves connected end to end. A nut block (112) is slidably connected in the reciprocating groove (1111) through a tooth. The nut block (112) is set on the corresponding mounting plate (91). A guide post (113) is provided on the side of the support plate (82) away from the reciprocating screw (111). The end of the mounting plate (91) away from the nut block (112) is slidably sleeved on the outer surface of the guide post (113). A second motor (114) is provided on the support plate (82) to drive the reciprocating screw (111) to rotate.

8. A high-efficiency steel bar bending machine according to claim 7, characterized in that, The mounting plate (91) has multiple moving slots (912), each of which is slidably connected to a moving column (95). A connecting plate (96) is provided on the multiple moving columns (95). A second straightening wheel (97) is provided in the middle of the connecting plate (96). A drive rod (98) is hinged to each clamping seat (92). The end of the drive rod (98) away from the clamping seat (92) is hinged to the connecting plate (96). When the clamping seat (92) is located inside the return slot (1002), the second straightening wheel (97) abuts the reinforcing bar against the surface of the mounting plate (91).

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