Steel bar bending device and working method

Abstract

The invention relates to a steel bar bending device and a working method. The steel bar bending device comprises a base, a blocking shaft used for supporting a steel bar is arranged on the base, a supporting mechanism is arranged in front of the blocking shaft in the feeding direction of the steel bar, the supporting mechanism is provided with a gap used for the steel bar to penetrate through, the side, away from the base, of the gap is open, and a bending shaft is arranged on one side of the blocking shaft; the bending driving mechanism can drive the bending shaft to move along an arc track on the periphery of the bending shaft so as to bend the reinforcing steel bar, a positioning plate is arranged behind the blocking shaft and connected with a positioning driving mechanism, a conveying mechanism is arranged in front of the supporting mechanism, a pushing plate is arranged on one side of the discharging end of the conveying mechanism, and the pushing plate is connected with the supporting mechanism. And the pushing plate is connected with a pushing driving mechanism, a material receiving box is arranged on the other side of the pushing plate, and by means of the bending device, the labor intensity of workers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of steel bar bending, and in particular to a steel bar bending device and a working method. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Rebar is a common building material in construction. During the construction process, bent rebar is widely used in stirrups, positioning bars, ear bars, etc. According to construction needs, it is often necessary to bend a fixed point of the rebar at a certain angle. The existing rebar production and bending device generally clamps the rebar through the central axis of the working disk and the surrounding iron stop shafts. During work, workers place the rebar flat between the central axis of the working disk and the corresponding forming axis, on the inner side of the iron stop shaft, according to the bending shape of the rebar. When the working disk rotates, one end of the rebar is blocked by the iron stop shaft and cannot rotate, the position of the central axis remains unchanged, and the forming axis rotates in an arc around the central axis to push and bend the rebar. After the bending is completed, the worker takes the rebar out of the bending machine and places it in the corresponding storage facility.

[0004] The above-mentioned traditional steel bar bending equipment requires manual work for the placement, positioning, bending and removal of steel bars, which consumes manpower and cannot guarantee the accuracy of the positioning of the bending points of the steel bars, resulting in inconsistent length specifications of the bent ends of the steel bars. When the steel bars are subsequently spliced, personnel are required to cut them, which is time-consuming and labor-intensive, and the use effect is not good. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a steel bar bending device and a working method, which does not require manual placement of the steel bar on the bending device, thereby ensuring the accuracy of the length of the bent end of the steel bar.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] In the first aspect, an embodiment of the present invention provides a steel bar bending device, including a base, a baffle shaft for supporting the steel bars is provided on the base, a supporting mechanism is provided in front of the baffle shaft along the feeding direction of the steel bars, the supporting mechanism is provided with a gap for the steel bars to pass through, the gap is open on the side away from the base, a bending shaft is provided on one side of the baffle shaft, a bending drive mechanism is installed between the bending shaft and the base, the bending drive mechanism can drive the bending shaft to move along a circular arc trajectory of the outer circumference of the bending shaft to bend the steel bars, a positioning plate is provided at the rear of the baffle shaft, the positioning plate is connected to the positioning drive mechanism, a conveying mechanism is provided in front of the supporting mechanism, a pushing plate is provided on one side of the discharging end of the conveying mechanism, the pushing plate is connected to the pushing drive mechanism, and a material receiving box is provided on the other side.

[0008] Optionally, the support mechanism includes an upper support plate and a lower support plate, both of which are fixedly connected to the base, and a gap for steel bars to pass through is formed between the upper support plate and the lower support plate.

[0009] Optionally, the top surface of the lower support plate is flush with the top of the blocking shaft.

[0010] Optionally, the positioning drive mechanism adopts an electric telescopic rod, which is fixedly connected to the base through a fixing seat, the telescopic direction of the electric telescopic rod is parallel to the conveying direction of the conveying mechanism, and the telescopic part of the electric telescopic rod is connected to the positioning plate.

[0011] Optionally, the positioning plate is provided with a sliding block, and the sliding block is slidably connected to the base via a guide groove provided on the base.

[0012] Optionally, the bending drive mechanism includes a turntable, which is connected to the rotation drive mechanism, and the eccentric position of the turntable is connected to one end of the bending shaft. The bending shaft passes through the base through an arc-shaped groove provided on the base, and the arc-shaped groove is concentrically provided with the turntable.

[0013] Optionally, the rotation drive mechanism includes a rotation drive motor fixed to the base, the rotation drive motor is connected to the screw transmission mechanism, the moving part of the screw transmission mechanism is connected to one end of the connecting rod, the other end of the connecting rod is connected to the rack, the rack is slidably connected to the base, the rack is meshed with the gear, and the gear is coaxially fixed on the end face of the turntable.

[0014] Optionally, the push driving mechanism adopts an electric telescopic rod fixed on one side of the frame of the conveying mechanism, the electric telescopic rod is connected to the push plate to drive the push plate to move, and the movement direction of the push plate is perpendicular to the conveying direction of the conveying mechanism.

[0015] Optionally, the conveying mechanism adopts a belt conveying mechanism, and a push driving mechanism is installed on one side of its frame, and the height of the top surface on the other side is not higher than the height of the top surface of the conveyor belt of the belt conveying mechanism.

[0016] In a second aspect, an embodiment of the present invention provides a working method of the steel bar bending device described in the first aspect:

[0017] The positioning drive mechanism drives the positioning plate to extend to a set position;

[0018] The transmission mechanism drives the multiple steel bars to move until the steel bars pass through the gaps of the support mechanism and cross the blocking shaft and contact the positioning plate;

[0019] The bending drive mechanism drives the bending axis to move along an arc trajectory to bend the steel bar to a set angle;

[0020] After the steel bar is bent, the bending drive mechanism drives the bending shaft to reset, and the push drive mechanism drives the push plate to move, pushing the bent steel bar into the receiving box.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The steel bar bending device of the present invention has a conveying mechanism on one side of the retaining shaft and a positioning plate on the other side. The conveying mechanism can drive the steel bar to move until the steel bar contacts the push plate. Since the relative position between the positioning plate and the retaining shaft is determined when the positioning drive mechanism is extended, the length of the bent portion of all the steel bars conveyed by the conveying mechanism after contacting the positioning plate is the same, thereby ensuring the accuracy of the bending point positioning and the uniformity of the bending section length. The cutting operation is avoided during the subsequent splicing of the steel bars, saving time and effort. In addition, the steel bars are loaded through the conveying mechanism, reducing the labor intensity of the staff.

[0023] 2. The steel bar bending device of the present invention has a push plate on one side of the discharging end of the conveying mechanism, and the push plate is connected to the push driving mechanism. The push plate can be used to push the bent steel bars into the receiving box, eliminating the need to manually remove the bent steel bars, thereby reducing the labor intensity of the staff.

[0024] 3. The steel bar bending device of the present invention has a positioning plate and a positioning drive mechanism on one side of the retaining shaft, and a transmission mechanism, a push plate and a push drive mechanism on the other side. The layout is reasonable, which realizes the combination of loading, positioning, bending and unloading, and improves the automation level of the entire steel bar bending work. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] Figure 1 The overall structure of the embodiment 1 of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 2 The overall structure of the embodiment 1 of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the front side of the base of Embodiment 1 of the present invention;

[0029] Figure 4 is a schematic diagram of the back side of the base of Embodiment 1 of the present invention;

[0030] Among them, 1. base, 2. positioning plate, 3. bending shaft, 4. blocking shaft, 5. frame, 6. conveyor belt, 7. transmission drive motor, 8. synchronous belt transmission mechanism, 9. control system, 10. wiring harness, 11. push plate, 12. upper support plate, 13. lower support plate, 14. arc groove, 15. turntable, 16. rotating drive motor, 17. support frame, 18. lead screw, 19. lead screw slider, 20. connecting rod, 21. rack, 22. slide rail, 23. gear, 24. first electric telescopic rod, 25. guide groove, 26. second electric telescopic rod, 27. receiving box. DETAILED DESCRIPTION

[0031] Example 1

[0032] This embodiment provides a steel bar bending device, such as Figure 1-Figure 4 As shown, it includes a conveying mechanism, which is used to convey steel bars. A base 1 is provided on one side of the discharge end of the conveying mechanism, and a supporting mechanism, a stop shaft 4, a bending drive mechanism, and a positioning drive mechanism are installed on the base 1, wherein the positioning drive mechanism is connected to the positioning plate 2, and the bending drive mechanism is connected to the bending shaft 3. The stop shaft 4 supports the steel bars at the bending points of the steel bars. The bending shaft 3 moves along an arc trajectory from the rear of the stop shaft 4 under the drive of the bending drive mechanism. The steel bar portion behind the stop shaft 4 is bent under the drive of the bending shaft 3, and the steel bar portion in front of the stop shaft 4 is limited by the supporting mechanism and cannot be tilted, thereby realizing the bending of the steel bars. The front and back are defined according to the conveying direction of the conveying mechanism. The conveying mechanism is located in the front side of the stop shaft 4, and the positioning drive mechanism is located in the rear side of the stop shaft.

[0033] In this embodiment, the conveying mechanism adopts a belt conveying mechanism, including a frame 5, one end of the frame 5 is provided with a driving roller, the other end is provided with a driven roller, and a conveyor belt 6 is wound between the driving roller and the driven roller. The driving roller is connected to the conveying drive mechanism, and the conveying drive mechanism can drive the driving roller to rotate. In this embodiment, the conveying drive mechanism includes a conveying drive motor 7, which is fixed to the frame through a motor seat, and the conveying drive motor 7 is connected to the driving roller through a synchronous belt transmission mechanism 8, and can drive the driving roller to rotate.

[0034] The transmission drive motor 7 is connected to the control system 9. In this embodiment, the control system 9 is installed on the base 1. In order to reduce the length of the wiring harness 10 used for controlling the transmission drive motor, the active roller is arranged close to the base 1. At the same time, the transmission drive motor 7 is installed at the end of the frame 5 close to the base 1 and is arranged below the conveyor belt 6.

[0035] A support mechanism is provided between the blocking shaft 3 and the discharge end of the conveying mechanism. The support mechanism is fixed on the base 1. The support mechanism is provided with a gap for steel bars to pass through, and the gap is open at one end away from the base to facilitate the push plate 11 to push the steel bars in the gap out.

[0036] In this embodiment, the support mechanism adopts an upper support plate 12 and a lower support plate 13 arranged in parallel, and the upper support plate 12 and the lower support plate 13 are installed on the front side of the base 1, and the distance between the upper support plate 12 and the lower support plate 13 matches the diameter of the steel bar and is slightly larger than the diameter of the steel bar. The space between the upper support plate 12 and the lower support plate 13 forms a gap for the steel bar to pass through, wherein the top surface of the lower support plate 13 is flush with the top of the blocking shaft 4, so that the upper support plate 12 and the lower support plate 13 play a guiding role for the steel bars sent out from the conveying mechanism, making it easier for the steel bars to pass over the blocking shaft. At the same time, the upper support plate 13 also plays a limiting role on the steel bars, preventing the non-bending section of the steel bars from tilting up when the steel bars are bent.

[0037] The stop shaft 4 is a cylindrical shaft, and one end of the stop shaft is fixedly connected to the front side of the base 1 .

[0038] An arc-shaped groove 14 is arranged on the outer periphery of the rear of the retaining shaft 4, and the bending shaft 3 is slidably connected to the base 1 through the arc-shaped groove 14. The axis of the bending shaft 3 and the axis of the retaining shaft 4 are arranged in parallel. After the bending shaft 3 passes through the arc-shaped groove 14, it is connected to a bending drive mechanism installed on the back of the base 1. The bending drive mechanism can drive the bending shaft to move along an arc-shaped trajectory, thereby bending the steel bar.

[0039] In this embodiment, the bending drive mechanism includes a turntable 15 rotatably connected to the back of the base through a rotating shaft. The turntable 15 is concentrically arranged with the arc-shaped groove 14. The eccentric position of the turntable 15 is connected to one end of the bending shaft 3. The bending shaft 3 passes through the arc-shaped groove 14 and is slidably connected to the base 1 through the arc-shaped groove 14.

[0040] The turntable 15 is connected to a rotation driving mechanism, and the rotation driving mechanism can drive the turntable to rotate around its own axis.

[0041] The rotation drive mechanism includes a rotation drive motor 16, which is fixed to the back of the base 1 through a motor seat, and the output shaft of the rotation drive motor 16 is connected to the screw transmission mechanism. Specifically, the screw transmission mechanism includes a rectangular support frame 17, which is fixed to the back of the base 1, and the support frame 17 is rotatably connected to one end of a screw 18, and the other end of the screw 18 is connected to the rotation drive motor 16. A screw slider 19 is threadedly connected to the screw 18, and the screw slider 19 is slidably connected to the support frame 17. The screw slider 19 is fixedly connected to one end of a connecting rod 20, and the other end of the connecting rod 20 is fixedly connected to a rack 21. The rack 21 is provided with a slider, and the slider is slidably connected to a slide rail 22 fixed to the back of the base 1, thereby realizing a sliding connection between the rack 21 and the base 1, and the rack 21 is meshed with a gear 23. The gear 23 is fixed to the end face of the turntable 15 and is coaxially arranged with the turntable 15.

[0042] The rotation drive motor 16 drives the lead screw 18 to rotate, and the lead screw slider 19 connected to the lead screw 18 makes a linear motion, thereby driving the rack 21 to make a linear motion through the connecting rod 20. Under the meshing action of the rack 21 and the gear 23, the turntable 15 rotates around its own axis.

[0043] The positioning drive mechanism adopts a device that can output linear motion, such as an electric telescopic rod or a hydraulic cylinder or a screw transmission mechanism. In this embodiment, the positioning drive mechanism adopts a first electric telescopic rod 24, which is fixed to the front side of the base 1 through a fixing seat, and the axis of the first electric telescopic rod 24 is parallel to the conveying direction of the conveying mechanism. A positioning plate 2 is provided at the end of the telescopic portion of the first electric telescopic rod 24, and the positioning plate 2 is used to contact the front end of the steel bar, thereby positioning the steel bar.

[0044] Furthermore, a slider 28 is provided on the positioning plate 2, and the slider 28 is slidably connected to the base 1 through a guide groove 25 provided on the base. The guide groove 25 is a rectangular groove, and its length direction is parallel to the conveying direction of the conveying mechanism. Through the cooperation of the slider 28 and the guide groove 25, the movement of the positioning plate 2 is guided.

[0045] A push drive mechanism is provided on one side of the discharge end of the conveying mechanism, and the push drive mechanism is connected to a push plate 1, and the bottom surface of the push plate 1 is located above the top surface of the conveyor belt 6, so that the push plate 1 can push the steel bars on the conveyor belt.

[0046] In this embodiment, the pushing drive mechanism adopts an electric telescopic rod or a hydraulic cylinder or a screw transmission mechanism and other devices that can output linear motion. Preferably, the pushing drive mechanism adopts a second electric telescopic rod 26, and the fixed part of the second electric telescopic rod 26 is fixed on the first baffle plate provided on the frame 5 on one side of the belt conveyor mechanism, and the top surface of the second baffle plate fixed to the frame 5 on the other side of the belt conveyor mechanism is not higher than the top surface of the conveyor belt 6, so that the pushing plate can push the steel bars away from the conveyor belt.

[0047] A pushing drive mechanism and a pushing plate 1 are provided on one side of the discharging end of the conveying mechanism, and a receiving box 27 is provided on the other side. The receiving box is used to receive the steel bars pushed out by the pushing plate. In this embodiment, the pushing plate can be used to push the bent steel bars into the receiving box, and there is no need to manually remove the bent steel bars, thereby reducing the labor intensity of the staff.

[0048] The first electric telescopic rod, the second electric telescopic rod, the rotation drive motor and the transmission drive motor are all connected to the control system 9 installed on the back of the base through the wiring harness 10, and their operations are controlled by the control system.

[0049] Furthermore, a pressure sensor is installed on the positioning plate 2, and the pressure sensor is connected to the control system 9 to detect whether the end of the steel bar is in contact with the positioning plate. A pressure sensor is provided at the upper end of the arc groove 14, and the pressure sensor is connected to the control system 9 to detect whether the bending axis 3 is reset. A pressure sensor is installed on the push plate 11, and the pressure sensor is connected to the control system 9 to detect whether the push plate 11 is detached from the steel bar, that is, whether the push plate pushes the steel bar out of the conveyor belt.

[0050] In the bending device of this embodiment, a positioning plate 2 and a positioning drive mechanism are arranged on one side of the retaining shaft 4, and a conveying mechanism, a pushing plate 11 and a pushing drive mechanism are arranged on the other side. The layout is reasonable, and the combination of loading, positioning, bending and unloading is realized, thereby improving the automation level of the entire steel bar bending work.

[0051] Example 2

[0052] This embodiment provides a working method of the steel bar bending device described in Embodiment 1:

[0053] The first electric telescopic rod 24 drives the positioning plate 2 to move to a set position;

[0054] The staff places a single steel bar or multiple steel bars arranged side by side on the conveyor belt 6. The conveyor belt 6 drives the steel bars to move. The steel bars pass through the space between the first support plate 12 and the second support plate 13, and then pass over the blocking shaft 4. The ends of the steel bars abut against the positioning plate 2. After the ends of the steel bars abut against the positioning plate 2 and the pressure sensor on the positioning plate 2 detects that the pressure value reaches the set value, the conveying drive motor 7 stops working, and the positioning of the steel bars is completed. At this time, the lower support plate 13 and the blocking shaft 4 support the steel bars.

[0055] The rotating drive motor 16 works, driving the bending shaft 3 to move along an arc-shaped trajectory, and the steel bar is bent at the position where it contacts the retaining shaft 4 as the bending point, wherein the steel bar portion in front of the bending point is bent under the action of the bending shaft 3, and the steel bar portion behind the bending point will not be lifted up under the action of the upper support plate 12. When the steel bar is bent to the set angle, the bending drive mechanism drives the bending shaft 3 to reset.

[0056] When the pressure sensor at the top of the arc-shaped slide 14 detects that the pressure reaches the set value, the second electric telescopic rod 26 starts to work, and pushes the bent steel bars away from the conveyor belt 6 through the push plate 11. The steel bars leaving the conveyor belt 6 fall into the receiving box 27. When the pressure sensor of the push plate 11 detects no pressure, the bending of all steel bars is completed, and the first telescopic rod 24 drives the positioning plate 2 to reset.

[0057] When the bending device of this embodiment is used, since the relative position between the positioning plate 2 and the retaining shaft 4 is determined when the first electric telescopic rod 24 is extended, the length of the bent portion of all the steel bars conveyed by the conveying mechanism is the same after they come into contact with the positioning plate 2, thereby ensuring the accuracy of the bending point positioning and the uniformity of the bending section length. The cutting operation is avoided during the subsequent splicing of the steel bars, saving time and effort. In addition, multiple steel bars are loaded through the conveying mechanism, reducing the labor intensity of the staff. The movement of the motor and the electric telescopic rod is completed with the aid of a pressure sensor, and the entire device has a high degree of automation.

[0058] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A steel bar bending device, characterized in that: The invention comprises a base, on which is provided a blocking shaft for supporting steel bars, a supporting mechanism is arranged in front of the blocking shaft along the feeding direction of the steel bars, the supporting mechanism is provided with a gap for the steel bars to pass through, the gap is open on the side away from the base, a bending shaft is arranged on one side of the blocking shaft, a bending drive mechanism is installed between the bending shaft and the base, the bending drive mechanism can drive the bending shaft to move along a circular arc trajectory of the outer circumference of the bending shaft to bend the steel bars, a positioning plate is arranged at the rear of the blocking shaft, the positioning plate is connected to the positioning drive mechanism, a conveying mechanism is arranged in front of the supporting mechanism, a pushing plate is arranged on one side of the discharging end of the conveying mechanism, the pushing plate is connected to the pushing drive mechanism, and a material receiving box is arranged on the other side.

2. A steel bar bending device as claimed in claim 1, characterized in that: The support mechanism comprises an upper support plate and a lower support plate, both of which are fixedly connected to the base, and a gap is formed between the upper support plate and the lower support plate for steel bars to pass through.

3. A steel bar bending device as claimed in claim 2, characterized in that: The top surface of the lower support plate is flush with the top of the retaining shaft.

4. A steel bar bending device as claimed in claim 1, characterized in that: The positioning drive mechanism adopts an electric telescopic rod, which is fixedly connected to the base through a fixing seat. The telescopic direction of the electric telescopic rod is parallel to the conveying direction of the conveying mechanism, and the telescopic part of the electric telescopic rod is connected with a positioning plate.

5. A steel bar bending device as claimed in claim 1, characterized in that: The positioning plate is provided with a sliding block, and the sliding block is slidably connected with the base through a guide groove arranged on the base.

6. A steel bar bending device as claimed in claim 1, characterized in that: The bending drive mechanism includes a turntable, which is connected to the rotation drive mechanism. The eccentric position of the turntable is connected to one end of the bending shaft. The bending shaft passes through the base through an arc-shaped groove arranged on the base, and the arc-shaped groove is arranged concentrically with the turntable.

7. A steel bar bending device as claimed in claim 6, characterized in that: The rotation drive mechanism includes a rotation drive motor fixed to the base, the rotation drive motor is connected to the screw transmission mechanism, the moving part of the screw transmission mechanism is connected to one end of the connecting rod, the other end of the connecting rod is connected to the rack, the rack is slidably connected to the base, the rack is meshed with the gear, and the gear is coaxially fixed to the end face of the turntable.

8. A steel bar bending device as claimed in claim 1, characterized in that: The push driving mechanism adopts an electric telescopic rod fixed on one side of the frame of the conveying mechanism. The electric telescopic rod is connected to the push plate to drive the push plate to move, and the movement direction of the push plate is perpendicular to the conveying direction of the conveying mechanism.

9. A steel bar bending device as claimed in claim 1, characterized in that: The conveying mechanism adopts a belt conveying mechanism, one side of the frame of which is equipped with a push driving mechanism, and the height of the top surface on the other side is not higher than the height of the top surface of the conveying belt of the belt conveying mechanism.

10. A working method of the steel bar bending device according to any one of claims 1 to 9, characterized in that: The positioning drive mechanism drives the positioning plate to extend to a set position; The transmission mechanism drives the multiple steel bars to move until the steel bars pass through the gaps of the support mechanism and cross the blocking shaft and contact the positioning plate; The bending drive mechanism drives the bending axis to move along an arc trajectory to bend the steel bar to a set angle; After the steel bar is bent, the bending drive mechanism drives the bending shaft to reset, the positioning drive mechanism drives the positioning plate to reset, and the push drive mechanism drives the push plate to move, pushing the bent steel bar into the receiving box.

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