Rebar bending machine with proximity switch angle detection

Abstract

The application discloses a reinforcing steel bar bender with proximity switch angle detection, which comprises a box body, a working panel, a connecting disc, a positioning shaft, a proximity switch, a motor, a speed reducer, a PLC and a frequency converter; the working panel is fixed to the top of the box body, the connecting disc is fixed to the working panel, and the positioning shaft is rotatably installed at the center of the connecting disc; the motor and the speed reducer are arranged in the box body, the motor is in transmission connection with the speed reducer, and the speed reducer is in transmission connection with the positioning shaft; the proximity switch is electrically connected with the PLC, the PLC is electrically connected with the frequency converter, and the frequency converter is electrically connected with the motor. The application further comprises a dustproof electric control box, and the PLC, the frequency converter and the transformer are integrally arranged in the dustproof electric control box. Compared with the prior art, the application has the advantages that the structure is compact, the bending angle is accurately positioned and automatically returned to zero through the proximity switch and the PLC, stepless speed regulation is realized through cooperation of the frequency converter, the dustproof electric control is designed in a modularized and integrated mode, and field maintenance is facilitated.

Description

Technical Field

[0001] This invention relates to the field of steel bar processing equipment technology, specifically a steel bar bending machine with proximity switch angle detection. Background Technology

[0002] A rebar bending machine is a piece of equipment used for bending and shaping rebars on construction sites. During use, it can bend rebars to meet the forming requirements of rebars of different specifications.

[0003] Most existing rebar bending machines rely on manual control of the bending angle, lacking high-precision automatic angle detection and zero-return functions, resulting in low bending accuracy and processing efficiency. Furthermore, their motor speed control methods are limited, failing to provide stepless adjustment based on rebar specifications, and the dispersed and poorly protected electrical control components lead to poor equipment adaptability and inconvenient on-site maintenance. Therefore, this invention proposes a rebar bending machine with proximity switch angle detection.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned defects and provide a rebar bending machine with proximity switch angle detection, which solves the technical problems of low angle control accuracy, low efficiency, inability to steplessly adjust speed and inconvenient maintenance of traditional rebar bending machines.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is: a steel bar bending machine with proximity switch angle detection, comprising: a housing, a working panel, a connecting plate, a positioning shaft, a proximity switch, a motor, a reducer, a PLC and a frequency converter; The working panel is fixedly installed at one end of the top of the box, the flange protective cover is located on the top of the box, the connecting plate is fixedly installed at the center of the top of the flange protective cover, and the positioning shaft is rotatably installed at the center of the connecting plate. The motor and reducer are installed inside the housing. The motor and reducer are connected in a driving connection, and the reducer is connected in a driving connection with the positioning shaft. The proximity switch is installed on one side of the Fabryer panel and is electrically connected to the PLC. The PLC is electrically connected to the frequency converter, and the frequency converter is electrically connected to the motor.

[0007] Furthermore, the connecting plate is also provided with an adjustment block and a roller shaft. The adjustment block is installed on one side of the positioning shaft, and an extension rod is fixedly installed on one end of the working panel. A limit plate is slidably connected to the extension rod.

[0008] Furthermore, a controller dust cover is hinged to the upper front of the enclosure, an electrical box door is hinged to the lower front of the enclosure, a handle and a foot pedal socket are fixedly installed on the side of the enclosure, a power cord is connected to the bottom of the side of the enclosure, and a foot switch is installed at one end of the electrical box door.

[0009] Furthermore, it also includes a dustproof electrical control box, which is integrated inside the box body, and the PLC, frequency converter and transformer are integrated inside the dustproof electrical control box.

[0010] Furthermore, the dustproof electrical control box also integrates an AC contactor, a three-phase over / under voltage protector, a circuit breaker, wiring terminals, and a PVC cable tray.

[0011] Furthermore, a first changeover switch, a second changeover switch, a push-button light switch, an emergency stop switch, and a frequency converter speed control potentiometer are fixedly installed on the panel of the dustproof electrical control box, and the frequency converter speed control potentiometer is electrically connected to the frequency converter.

[0012] Furthermore, it also includes a European standard plug, which is electrically connected to the dustproof electrical control box.

[0013] The advantages of this invention compared to the prior art are: In this invention, a dual closed-loop control system using proximity switches and PLC is employed to monitor the positioning axis in real time. When the axis reaches the preset positioning pin, a command is issued to stop the motor and trigger the return program, thereby achieving precise positioning of the bending angle, avoiding human operation errors, and significantly improving bending consistency. In this invention, the PLC control system automatically and quickly returns the device to its initial position after the bending action is completed, thereby improving work efficiency and reducing manual intervention. In this invention, a frequency converter is used in conjunction with a frequency converter speed control potentiometer to achieve stepless adjustment of motor speed, adapting in real time to different steel bar specifications and bending radius requirements, avoiding full-load motor start-up, and extending equipment life; In this invention, components such as PLC, frequency converter, and transformer are integrated into a dustproof electrical control box, and European standard plugs are used for power connection, thereby realizing a modular electrical control integrated design that facilitates on-site maintenance and component replacement. In this invention, the output torque is enhanced by connecting a motor to a reducer, which meets the bending process requirements of large-diameter steel bars. The whole machine has a compact structure and is suitable for on-site processing operations at construction sites. Attached Figure Description

[0014] Figure 1 This is a perspective view of a rebar bending machine with proximity switch angle detection according to the present invention.

[0015] Figure 2 This is a schematic diagram of the internal structure of a rebar bending machine with proximity switch angle detection according to the present invention.

[0016] The diagram shows: 1. Adjusting block; 2. Positioning shaft; 3. Flange protective cover; 4. Roller shaft; 5. Connecting disc; 6. Work panel; 7. Limit plate; 8. Extension rod; 9. Controller dust cover; 10. Electrical box door; 11. Foot switch; 12. Handle; 13. Box body; 14. Foot pedal socket; 15. Power cord; 16. First changeover switch; 17. Second changeover switch; 18. Push-button light switch; 19. Emergency stop switch; 20. Frequency converter; 21. Transformer; 22. AC contactor; 23. Three-phase over / under voltage protector; 24. PLC; 25. Circuit breaker; 26. Terminal block; 27. Frequency converter speed control potentiometer; 28. PVC cable tray. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] like Figures 1 to 2 As shown, this embodiment proposes a rebar bending machine with proximity switch angle detection, including a housing 13, a working panel 6, a connecting plate 5, a positioning shaft 2, a proximity switch, a motor, a reducer, a PLC 24, a frequency converter 20, a dustproof electrical control box, and a European standard plug.

[0019] Specifically, the working panel 6 is fixedly installed at one end of the top of the box 13, the flange protective cover 3 is located at the top of the box 13, the connecting plate 5 is fixedly installed at the center of the top of the flange protective cover 3, the positioning shaft 2 is rotatably installed at the center of the connecting plate 5, the connecting plate 5 is also provided with an adjusting block 1 and a roller shaft 4, the adjusting block 1 is installed on one side of the positioning shaft 2, and an extension rod 8 is fixedly installed at one end of the working panel 6. A limit plate 7 is slidably connected on the extension rod 8. By using the extension rod 8 in conjunction with the limit plate 7 and the adjusting block 1, it is easy to adapt to the bending operation requirements of steel bars of different lengths and specifications.

[0020] Specifically, the proximity switch is installed on one side of the Fabry-Performance Panel 5. The proximity switch is electrically connected to PLC24, PLC24 is electrically connected to frequency converter 20, and frequency converter 20 is electrically connected to the motor.

[0021] Specifically, a controller dust cover 9 is hinged to the upper front of the enclosure 13, and an electrical box door 10 is hinged to the lower front of the enclosure 13. A handle 12 and a foot pedal socket 14 are fixedly installed on the side of the enclosure 13. A power cord 15 is connected to the bottom side of the enclosure 13. A foot switch 11 is installed at one end of the electrical box door 10, which facilitates the operator to control the start and stop of the equipment, thereby improving the dust protection effect of the electrical control components and facilitating handling and on-site relocation.

[0022] Specifically, the dustproof electrical control box is integrated inside the enclosure 13. The PLC 24, frequency converter 20 and transformer 21 are also integrated inside the dustproof electrical control box. Through the modular electrical control integration design, the core electrical control components are centrally arranged in a dustproof manner, which facilitates on-site maintenance and component replacement.

[0023] Specifically, the dustproof electrical control box also integrates an AC contactor 22, a three-phase over / under voltage protector 23, a circuit breaker 25, terminal blocks 26, and a PVC cable tray 28. By integrating multiple control and protection components, it realizes logical functions such as angle parameter setting, automated control of the bending process, fault diagnosis and protection, multi-group angle data storage, forward / stop / reverse switching, manual / automatic mode switching, emergency stop control, and home return, ensuring the stability and safety of equipment operation. Specifically, the dustproof electrical control box panel is fixedly equipped with a first changeover switch 16, a second changeover switch 17, a push-button light switch 18, an emergency stop switch 19, and a frequency converter speed control potentiometer 27. The frequency converter speed control potentiometer 27 is electrically connected to the frequency converter 20. The first changeover switch 16 is a 1-0-2 gear changeover switch, and the second changeover switch 17 is a manual-automatic changeover switch. The first changeover switch 16 and the second changeover switch 17 realize the switching of working mode and direction. The emergency stop switch 19 ensures rapid shutdown in emergency situations. The frequency converter speed control potentiometer 27 realizes stepless adjustment of motor speed to adapt to the bending speed requirements of different specifications of steel bars.

[0024] Specifically, the motor and reducer are housed inside the housing 13. The motor and reducer are connected by a drive mechanism, and the reducer is connected by a drive mechanism to the positioning shaft 2. The motor has a power of 2.2kW, the reducer has a speed ratio of 1:25, and the frequency converter is configured to adjust the motor speed within the range of 0-1450rpm. The advantage is that the 2.2kW motor combined with the 1:25 reducer amplifies the torque, adapting to the bending speed requirements of steel bars of different diameters, and meeting the bending process requirements for steel bars with a maximum diameter of φ24mm.

[0025] Specifically, the rebar bending machine can bend rebars with a diameter range of Φ6-24mm, a bending angle range of 0-360°, and a bending speed of 5-15 seconds / bend (adjustable). The machine weighs approximately 130kg. Its advantages include precise control, compact size, and simple operation, significantly improving the efficiency and precision of rebar processing.

[0026] Specifically, the European standard plug is electrically connected to the dustproof electrical control box. By using the European standard plug for power connection, it is easy to install and remove, and facilitates on-site wiring.

[0027] In practical implementation, the operator sets the required speed via the inverter speed control potentiometer 27. After the motor is reduced in speed and torque is increased by the reducer, it drives the positioning shaft 2 and the connecting plate 5 to rotate, causing the steel bar to bend and form. A proximity switch is installed on one side of the connecting plate 5 to monitor the positioning pin in real time. When the preset angle is reached, the signal is processed by the PLC 24 and a command is issued to stop the motor and trigger the return program, automatically returning to the initial position. The foot switch 11 can be used to achieve convenient start and stop control. The whole process is highly automated, with precise angle control and simple operation.

[0028] All electrical components mentioned in this document are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer. The specific implementation of this disclosure omits detailed descriptions of known functions and components. To ensure device compatibility, the operating methods used are consistent with the parameters of commercially available instruments. Furthermore, the installation, connection, or setting methods of all components in this specification are common mechanical methods, such as welding, threaded connection, and screw connection. The specific structure, model, and coefficient indicators of all components are their own technologies. As long as the beneficial effects can be achieved, they can be implemented. At the same time, the contents not described in detail in this specification are all prior art known to those skilled in the art. The accompanying drawings are structural schematic diagrams used to supplement the text of the specification.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rebar bending machine with proximity switch angle detection, characterized in that, include: Housing (13), working panel (6), connecting plate (5), positioning shaft (2), proximity switch, motor, reducer, PLC (24) and frequency converter (20); The working panel (6) is fixedly installed at one end of the top of the box (13), the flange protection cover (3) is located on the top of the box (13), the connecting plate (5) is fixedly installed at the center of the top of the flange protection cover (3), and the positioning shaft (2) is rotatably installed at the center of the connecting plate (5). The motor and reducer are installed inside the housing (13), the motor and reducer are connected in transmission, and the reducer is connected in transmission to the positioning shaft (2); The proximity switch is installed on one side of the Fabryer Plate (5), and the proximity switch is electrically connected to the PLC (24); The PLC (24) is electrically connected to the frequency converter (20), and the frequency converter (20) is electrically connected to the motor.

2. The rebar bending machine with proximity switch angle detection according to claim 1, characterized in that: The connecting plate (5) is also provided with an adjustment block (1) and a roller shaft (4). The adjustment block (1) is installed on one side of the positioning shaft (2). An extension rod (8) is fixedly installed on one end of the working panel (6). A limit plate (7) is slidably connected on the extension rod (8).

3. The rebar bending machine with proximity switch angle detection according to claim 1, characterized in that: The upper front of the box (13) is hinged with a controller dust cover (9), the lower front of the box (13) is hinged with an electrical box door panel (10), a handle (12) and a foot pedal socket (14) are fixedly installed on the side of the box (13), a power cord (15) is connected to the bottom side of the box (13), and a foot switch (11) is installed at one end of the electrical box door panel (10).

4. The rebar bending machine with proximity switch angle detection according to claim 1, characterized in that: It also includes a dustproof electrical control box, which is integrated inside the box body (13). The PLC (24), frequency converter (20) and transformer (21) are integrated inside the dustproof electrical control box.

5. The rebar bending machine with proximity switch angle detection according to claim 4, characterized in that: The dustproof electrical control box also integrates an AC contactor (22), a three-phase over / under voltage protector (23), a circuit breaker (25), a terminal block (26), and a PVC cable tray (28).

6. The rebar bending machine with proximity switch angle detection according to claim 4, characterized in that: The dustproof electrical control box panel is fixedly installed with a first changeover switch (16), a second changeover switch (17), a push-button light switch (18), an emergency stop switch (19), and a frequency converter speed control potentiometer (27). The frequency converter speed control potentiometer (27) is electrically connected to the frequency converter (20).

7. The rebar bending machine with proximity switch angle detection according to claim 4, characterized in that: It also includes a European standard plug, which is electrically connected to the dustproof electrical control box.

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