PLC motor control practical training device

Abstract

The utility model relates to the technical field of practical training devices, in particular to a PLC motor control practical training device, which comprises a platform, a motor lead screw driving mechanism, a wiring terminal and an electrical cabinet, the motor lead screw driving mechanism and the wiring terminal are both mounted on the platform, and the motor lead screw driving mechanism comprises a bottom plate, a motor, an encoder, a lead screw, a lead screw nut and a proximity switch. According to the utility model, through the modular design, the manufacturing and maintenance process is simplified; the compact structure is convenient to carry and adapts to multi-scene teaching requirements; the expansibility is enhanced through the detachable design, and upgrading and function expansion are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of training devices, in particular to a PLC motor control training device. Background Technique

[0002] As an important tool for cultivating students' practical skills and understanding the principles of industrial automation, the PLC motor control training device is widely used in various vocational colleges, technical training centers and university laboratories. However, there are still many defects in the design and application of the current PLC motor control training devices on the market.

[0003] First of all, the device is large in volume and heavy in weight. In the teaching environment, such large equipment not only occupies a large amount of space resources, but also increases the difficulty of handling and layout adjustment, which is not conducive to the flexible teaching scenario requirements. Secondly, limited by the established design, there are great limitations in the function expansion and module upgrade of traditional training devices.

[0004] Therefore, there is an urgent need for a PLC motor control training device with a simple structure, easy to manufacture, convenient to carry, strong expandability and suitable for classroom teaching to solve the defects of the existing technology. Content of the Utility Model

[0005] The purpose of the utility model is to provide a PLC motor control training device to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A PLC motor control training device includes a platform, a motor lead screw drive mechanism, a terminal block, and an electrical cabinet. The motor lead screw drive mechanism and the terminal block are both installed on the platform. The motor lead screw drive mechanism includes a bottom plate, a motor, an encoder, a lead screw, a lead screw nut, and a proximity switch. The bottom plate is detachably and fixedly installed on the platform. Side plates are fixedly installed at both ends of the bottom plate. The lead screw is rotatably installed between the two side plates. One end of the lead screw is drivingly connected to the motor fixedly installed on one side plate. Guide rods are fixedly connected between the two side plates. The lead screw nut is fixedly installed on the movable plate and is in transmission connection with the lead screw. The guide rod is slidably connected to the guide sleeve fixedly installed on the movable plate. A profile plate seat is installed on the bottom plate. The proximity switch is installed on the profile plate seat and its position is movable. A position indication sign is provided on the movable plate, and the position indication sign is located in front of the proximity switch. The electrical cabinet is provided with a PLC controller and a terminal block. The terminal blocks on the platform and the electrical cabinet are used for wiring to connect the PLC controller with the motor, the encoder, and the proximity switch.

[0008] Furthermore, wire grooves, control buttons, and working status lights are also installed on the platform, and the control buttons and working status lights are electrically connected to the PLC controller.

[0009] Furthermore, handles are provided on both the left and right sides of the platform, and adjustable-height support feet are also provided at the four corners of the platform.

[0010] Furthermore, both the platform and the profile plate seat are assembled from standard aluminum profiles, and the main body of the platform is a plate-like structure formed by splicing multiple standard aluminum profiles side by side.

[0011] Furthermore, the terminal block, bracket, wire groove, control button, and working status light are all detachably installed on the platform through aluminum profile fasteners and can be installed on any standard aluminum profile.

[0012] Furthermore, the proximity switch is slidably installed on the profile plate seat, a screw rod is rotatably connected between the two end side plates, and the screw rod is threadedly connected to the threaded hole opened on the proximity switch. By rotating the knob at the end of the screw rod, the proximity switch can be translated.

[0013] Furthermore, a scale line is provided on the front side of the profile plate seat, and the scale line is used to indicate the position of the position indicating sign.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. Through modular design, each component such as the motor screw drive mechanism and the electrical cabinet of the present utility model can be independently disassembled and assembled, which is convenient for assembly during the manufacturing process and for later maintenance and upgrade. The overall structure of the device is compact, with a small volume and light weight, making it easy to carry and adjust the layout in different teaching environments such as classrooms and laboratories, meeting the needs of flexible and changeable teaching scenarios.

[0016] 2. In the present utility model, the bottom plate and the motor screw drive mechanism thereon are designed to be detachably and fixedly installed, and users can replace components such as motors and encoders of different models or functions according to needs to achieve function expansion and module upgrade. The device integrates multiple industrial automation technologies such as PLC control, motor drive, and position detection, providing students with an intuitive and comprehensive practical platform, which helps to deeply understand the principles of industrial automation and improve practical skills.

[0017] 3. The present utility model uses standard aluminum profiles as the main materials for the platform and the profile plate seat, which is convenient for manufacturing, assembly, and disassembly. This modular design makes the device more convenient during assembly, disassembly, and transportation. Due to the use of standardized components, the device has stronger expandability and can be flexibly adjusted in layout according to the needs of the teaching environment to adapt to the space limitations of different classrooms or laboratories. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic three-dimensional structure diagram of a PLC motor control training device;

[0019] Figure 2 It is a top view of a PLC motor control training device;

[0020] Figure 3 It is a schematic front structure diagram of a motor lead screw drive mechanism;

[0021] Figure 4 It is a schematic back structure diagram of a motor lead screw drive mechanism;

[0022] Figure 5 It is a schematic structure diagram of the platform.

[0023] In the figure: 1. Platform; 2. Control button; 3. Working status light; 4. Terminal block; 5. Wire duct; 6. Motor lead screw drive mechanism; 7. Base plate; 8. Side plate; 9. Knob; 10. Screw; 11. Scale line; 12. Proximity switch; 13. Position indication sign; 14. Movable plate; 15. Guide sleeve; 16. Lead screw nut; 17. Guide rod; 18. Lead screw; 19. Motor; 20. Encoder; 21. Profile plate seat; 22. Handle; 23. Support foot. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Example 1: Please refer to Figures 1 to 5, A PLC motor control training device, including a platform 1, a motor lead screw drive mechanism 6, a terminal block 4, and an electrical cabinet. The motor lead screw drive mechanism 6 and the terminal block 4 are both installed on the platform 1. The motor lead screw drive mechanism 6 includes a base plate 7, a motor 19, an encoder 20, a lead screw 18, a lead screw nut 16, and a proximity switch 12. The base plate 7 is detachably and fixedly installed on the platform 1. At both ends of the base plate 7, a side plate 8 is fixedly installed respectively. The lead screw 18 is rotatably installed between the two side plates 8. One end of the lead screw 18 is drivingly connected to the motor 19 fixedly installed on one side plate 8. A guide rod 17 is fixedly connected between the two side plates 8. The lead screw nut 16 is fixedly installed on the movable plate 14 and is in transmission connection with the lead screw 18. The guide rod 17 is slidably connected to the guide sleeve 15 fixedly installed on the movable plate 14. A profile plate seat 21 is installed on the base plate 7. The proximity switch 12 is installed on the profile plate seat 21 and its position is movable. A position indicating sign 13 is provided on the movable plate 14. The position indicating sign 13 is located on the front side of the proximity switch 12. In the electrical cabinet, there is a PLC controller and a terminal block 4. The terminal blocks 4 on the platform 1 and the electrical cabinet are used for wiring and connecting the PLC controller with the motor 19, the encoder 20, and the proximity switch 12.

[0026] A wire groove 5, a control button 2, and a working status light 3 are also installed on the platform 1. The control button 2 and the working status light 3 are electrically connected to the PLC controller.

[0027] Handles 22 are provided on the left and right sides of the platform 1. Adjustable-height support feet 23 are also provided at the four corners of the platform 1.

[0028] Both the platform 1 and the profile plate seat 21 are assembled from standard aluminum profiles. The main body of the platform 1 is a plate-like structure formed by splicing multiple standard aluminum profiles side by side.

[0029] The terminal block 4, the bracket, the wire groove 5, the control button 2, and the working status light 3 are all detachably installed on the platform 1 through aluminum profile fasteners and can be installed on any standard aluminum profile.

[0030] The proximity switch 12 is slidably installed on the profile plate seat 21. A screw rod 10 is rotatably connected between the two side plates 8. The screw rod 10 is in threaded connection with the threaded hole opened on the proximity switch 12. By rotating the knob 9 at the end of the screw rod 10, the proximity switch 12 can be translated.

[0031] A scale line 11 is provided on the front side of the profile plate seat 21. The scale line 11 is used to indicate the position of the position indicating sign 13.

[0032] The working principle of this embodiment:

[0033] The working process of this embodiment is as follows: The user writes a control program through the PLC programming software, which defines the start, stop, speed, direction, and position control logic of the motor. Subsequently, the written program is downloaded to the PLC controller in the electrical cabinet. When the user triggers an operation signal through the teaching interface or an external button, the PLC controller receives and parses the signal, and sends a control instruction to the motor 19 according to the preset program logic. After receiving the instruction through the internal motor driver of the motor 19, the motor starts to rotate, driving the lead screw 18 to rotate. The rotation of the lead screw 18 is converted into the linear motion of the movable plate 14 through the lead screw nut 16. At the same time, the encoder 20 continuously detects the rotation angle or position of the motor and feeds this information back to the PLC controller. In addition, the proximity switch 12 acts as a position sensor. When a specific position on the movable plate 14 aligns with the proximity switch 12, a signal is triggered, and this signal is also sent to the PLC controller. The position indicating sign 13 is fixed on the movable plate 14 and moves with the movable plate, intuitively showing the current position. The user can monitor and control the position by observing the position indicating sign 13 or reading the position data in the PLC controller. The PLC controller continuously adjusts the output of the motor according to the feedback signals from the encoder and the proximity switch to achieve precise control of the position of the movable plate, forming a closed-loop control system

[0034] The wire duct 5 is used to organize and fix the electrical lines to ensure the neatness and safety of the electrical connections. Electrical lines such as power lines and signal lines are introduced through the openings of the wire duct 5, laid along the inside of the wire duct, and fixed on the platform 1 through fixing devices of the wire duct such as buckles and screws. This not only protects the lines from external interference and damage but also facilitates the maintenance and replacement of the lines.

[0035] The control button 2 is used to manually trigger the control instructions of the PLC controller, such as starting and stopping the motor, etc.; the working status light 3 is used to display the current working status of the device, such as running, stopped, faulty, etc. The control button 2 is electrically connected to the input port of the PLC controller. When the button is pressed, an electrical signal is sent to the PLC controller, and the PLC controller performs corresponding control operations according to the preset program logic. The working status light 3 is electrically connected to the output port of the PLC controller, and the PLC controller controls the lighting and extinguishing of the light according to the actual working status of the device, thus intuitively showing the working status of the device to the user.

[0036] The handle 22 provides a convenient way for carrying and moving, facilitating the user to move the training device in different teaching environments. The support feet 23 are used to support the platform 1 and allow the user to adjust the height of the platform according to actual needs to adapt to different teaching environments and operation requirements.

[0037] Standard aluminum profiles are used as the main materials for the platform 1 and the profile plate seat 21, which facilitates fabrication, assembly, and disassembly. This modular design makes the device more convenient during assembly, disassembly, and transportation. Due to the use of standardized components, the device has stronger expandability and can be flexibly adjusted according to the needs of the teaching environment to adapt to the space limitations of different classrooms or laboratories.

[0038] The proximity switch 12 is slidably mounted in a guide rail or chute on the profile plate seat 21 and is fixed in position by the threaded connection of the screw 10 with the threaded hole. The user can push the proximity switch to slide on the guide rail by rotating the knob 9 at the end of the screw 10, thereby changing its position. The scale line 11 on the front side of the profile plate seat 21 provides a position indication function to help the user accurately set the position of the proximity switch. When the proximity switch is aligned with a specific position on the position indication sign 13, an accurate position detection function can be achieved.

[0039] Through modular design, this embodiment simplifies the fabrication and maintenance processes; the compact structure is convenient for handling and meets the teaching requirements of multiple scenarios; the detachable design enhances expandability and facilitates upgrading and function expansion.

Claims

1. A PLC motor control training device, comprising a platform (1), a motor screw drive mechanism (6), a terminal block (4), and an electrical cabinet, characterized in that: The motor screw drive mechanism (6) and the terminal block (4) are both installed on the platform (1). The motor screw drive mechanism (6) includes a base plate (7), a motor (19), an encoder (20), a lead screw (18), a lead screw nut (16), and a proximity switch (12). The base plate (7) is detachably and fixedly installed on the platform (1). Side plates (8) are fixedly installed at both ends of the base plate (7). The lead screw (18) is rotatably installed between the two side plates (8). One end of the lead screw (18) is drivingly connected to the motor (19) fixedly installed on one side plate (8). A guide rod (17) is fixedly connected between the two side plates (8). The lead screw nut (16) is fixedly installed on the movable plate (14) and is in transmission connection with the lead screw (18). The guide rod (17) is slidably connected to a guide sleeve (15) fixedly installed on the movable plate (14). A profile plate seat (21) is installed on the base plate (7). The proximity switch (12) is installed on the profile plate seat (21) and its position is movable. A position indicating sign (13) is provided on the movable plate (14), and the position indicating sign (13) is located in front of the proximity switch (12); The electrical cabinet is provided with a PLC controller and a terminal block (4). The terminal blocks (4) on the platform (1) and the electrical cabinet are used for wiring and connecting the PLC controller with the motor (19), the encoder (20), and the proximity switch (12).

2. The PLC motor control training device according to claim 1, wherein: A wire groove (5), control buttons (2), and working status lights (3) are also installed on the platform (1). The control buttons (2) and the working status lights (3) are electrically connected to the PLC controller.

3. A PLC motor control training device according to claim 1, characterized in that: Handles (22) are provided on the left and right sides of the platform (1), and adjustable-height support feet (23) are provided at the four corners of the platform (1).

4. A PLC motor control training device according to claim 2, characterized in that: Both the platform (1) and the profile plate seat (21) are assembled from standard aluminum profiles. The main body of the platform (1) is a plate-like structure formed by splicing multiple standard aluminum profiles side by side.

5. A PLC motor control training device according to claim 4, characterized in that: The terminal block (4), brackets, wire groove (5), control buttons (2), and working status lights (3) are all detachably installed on the platform (1) through aluminum profile fasteners and can be installed on any standard aluminum profile.

6. A PLC motor control training device according to claim 1, characterized in that: The proximity switch (12) is slidably installed on the profile plate seat (21). A screw rod (10) is rotatably connected between the two side plates (8). The screw rod (10) is threadedly connected to a threaded hole opened on the proximity switch (12). By rotating the knob (9) at the end of the screw rod (10), the proximity switch (12) can be translated.

7. A PLC motor control training device according to claim 1, characterized in that: A scale line (11) is provided on the front side of the profile plate seat (21), and the scale line (11) is used to indicate the position of the position indicating sign (13).

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