Workbench for photovoltaic steel processing

Abstract

This utility model relates to a workbench for processing photovoltaic steel profiles, including a workbench, a slide on the workbench, clamping blocks on the slide, a bidirectional threaded rod inside the slide, and a drive motor at the end of the slide. Two sets of slides are arranged opposite each other, and two sets of clamping blocks are symmetrically arranged on the slide. An airbag is attached to the inner side of the clamping block, and a pressure sensor is embedded in the inner side of the clamping block near the airbag. By introducing a pneumatic flexible clamping structure, the core of which is to use an inflatable airbag as an actuator, the airbag can actively deform when clamping the photovoltaic steel profile, uniformly wrapping the outline of the steel profile to achieve close surface contact. This "softness overcomes rigidity" method not only completely avoids the scratches and deformation of the steel profile surface caused by traditional rigid clamping, but also adaptively compensates for the shape tolerance of the steel profile, making the clamping force evenly distributed. While ensuring firm clamping, it greatly improves the processing quality and consistency of the product, and realizes flexible and efficient clamping.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic steel processing technology, and in particular to a workbench used for photovoltaic steel processing. Background Technology

[0002] A workbench used for processing photovoltaic steel profiles is a specialized piece of process equipment. It typically serves as an auxiliary positioning and support platform for processing equipment such as laser cutting machines, punching machines, and riveting machines. Its core function is not to directly perform cutting or punching, but to ensure that various steel profiles (such as C-shaped steel, U-shaped steel, Z-shaped steel, etc.) in the photovoltaic support system can be quickly, accurately, and stably positioned and clamped during processing. This allows subsequent equipment to efficiently and accurately complete processes such as drilling, punching, cutting, and marking. Simply put, it is like a "mold" or "fixture" for steel profile processing, a crucial bridge connecting raw materials (long steel profiles) and processing equipment. The role of the workbench is vital, directly affecting the quality, production efficiency, and cost of the final product.

[0003] Existing worktables for processing photovoltaic steel profiles typically employ simple rigid V-blocks or clamps with fixed spacing for their clamping structure. Adjusting the clamping spacing requires manual adjustment using tools to loosen bolts, which is time-consuming and labor-intensive. The clamping action is mostly driven by a single cylinder or screw mechanism, and the clamping force cannot be monitored and adjusted in real time. It often relies on the worker's experience to judge, which can easily lead to workpiece displacement during processing due to insufficient clamping force, or deformation of thin-walled steel profiles due to excessive clamping force. In addition, the clamping surface is in rigid contact, which not only easily scratches the workpiece surface but also cannot adapt to the shape tolerances of the steel profiles. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing worktables used for processing photovoltaic steel profiles are usually inefficient to adjust manually, the clamping force is uncontrollable and easily damages the workpiece, and rigid clamping scratches the workpiece and does not fit well, resulting in low production efficiency.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A workbench for processing photovoltaic steel profiles includes a workbench, a slide on the workbench, clamping blocks on the slide, a bidirectional threaded rod inside the slide, and a drive motor at the end of the slide. Two sets of slides are arranged opposite each other. Two sets of clamping blocks are symmetrically arranged on the slide. The clamping blocks are coaxially arranged with and threadedly connected to the bidirectional threaded rod. An air bladder is fitted against the inner side of the clamping block, and a pressure sensor is embedded in the inner side of the clamping block near the air bladder. The clamping blocks on the two sets of slides are arranged opposite each other. The clamping blocks are used to clamp and fix the photovoltaic steel profiles. The upper end is equipped with a gas collection tank, and a gas guide pipe is fixedly connected between the gas collection tank and the air bag. A solenoid valve for controlling the gas inlet and outlet is provided on the outside of the connection between the gas guide pipe and the gas collection tank. A gas pressure controller for controlling the gas pressure is provided on the outside of the gas guide pipe. A solenoid reversing valve for controlling the gas direction is provided on the part of the gas guide pipe near the air bag. Two sets of electric push rods are symmetrically provided at the ends of the two sets of slides that are far apart from each other. A PLC controller is provided on the side of the worktable. The PLC controller is used to control the status of the drive motor, electric push rods, pressure sensor and air bag. The air bag is used to flexibly clamp the photovoltaic steel.

[0006] The beneficial effects of this utility model are as follows: by introducing a pneumatic flexible clamping structure, the core of which is to use an inflatable airbag as an actuator, the airbag can actively deform and evenly wrap the outline of the photovoltaic steel when clamping it, achieving close surface contact. This "softness overcomes rigidity" method not only completely avoids the scratches and deformation of the steel surface caused by traditional rigid clamping, but also adaptively compensates for the shape tolerance of the steel, making the clamping force evenly distributed. While ensuring firm clamping, it greatly improves the processing quality and consistency of the product.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, two sets of sliding grooves are symmetrically provided on the workbench. The slide is slidably connected to the workbench through the sliding grooves, which are used for the slide to slide and limit the movement of the slide.

[0009] Furthermore, the output end of the drive motor is fixedly connected to the bidirectional threaded rod, and the drive motor drives the two sets of clamping blocks to move relative to each other by driving the bidirectional threaded rod to rotate.

[0010] Furthermore, the electric push rod is fixedly installed on the worktable, and the electric push rod controls the distance between the two sets of slides by pushing the slide along the slide groove.

[0011] Furthermore, the shape of the airbag perfectly matches the V-shaped base slope.

[0012] Furthermore, four sets of support columns are evenly distributed between the base plate and the workbench. The upper end of the support column is fixedly connected to a first connecting block, and the inner side of the first connecting block is provided with a second connecting block. The first connecting block and the second connecting block are fixed by bolts and nuts.

[0013] Furthermore, the upper end of the gas collection tank is equipped with an air inlet pipe, and the upper end of the air inlet pipe is equipped with a sealing cap.

[0014] Furthermore, the airbag is made of thermoplastic polyurethane elastomer material.

[0015] The beneficial effects of adopting the above-mentioned further solution are as follows: the drive motor drives the bidirectional threaded rod, and the electric push rod controls the movement of the carriage, which can automatically and synchronously adjust the distance between the two clamping blocks on the same carriage and the distance between the two sets of carriages. This design can accurately adapt to steel sections with different cross-sectional dimensions (such as C-shaped steel or U-shaped steel of different widths), realizing rapid and flexible production changeover; through real-time feedback from pressure sensors and logical judgment of the PLC controller, combined with the precise adjustment of the pressure inside the airbag by the pneumatic controller, an intelligent closed-loop control system is formed; the entire process is uniformly scheduled and controlled by the PLC controller, and the actions are fast, accurate, and consistent. This not only reduces the dependence on the operator's skills, but also ensures the stable and reliable processing quality of each product, greatly improving the automation level and cycle time of the production line. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the carriage structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the clamping block structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the airbag structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the support column structure of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Workbench; 2. Clamping block; 3. Airbag; 4. Air collection tank; 5. Air guide pipe; 6. Solenoid valve; 7. Air pressure controller; 8. Solenoid directional valve; 9. Air inlet pipe; 10. Bidirectional threaded rod; 11. Slide carriage; 12. Drive motor; 13. Electric push rod; 14. Base plate; 15. Support column; 16. First connecting block; 17. Second connecting block. Detailed Implementation

[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0024] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0025] like Figures 1-5 As shown, the workbench for processing photovoltaic steel profiles includes a workbench 1, a slide 11 mounted on the workbench 1, clamping blocks 2 mounted on the slide 11, a bidirectional threaded rod 10 inside the slide 11, and a drive motor 12 at the end of the slide 11. Two sets of slides 11 are arranged opposite each other, and two sets of clamping blocks 2 are symmetrically arranged on the slide 11. The clamping blocks 2 are coaxially arranged with and threadedly connected to the bidirectional threaded rod 10. An air bladder 3 is fitted against the inner side of the clamping blocks 2, and a pressure sensor is embedded in the inner side of the clamping blocks 2 near the air bladder 3. The clamping blocks 2 on the two sets of slides 11 are arranged opposite each other. The clamping blocks 2 are used to clamp and fix the photovoltaic steel profiles. A gas collecting tank 4 is located at the upper end of the clamping blocks 2. A gas guide pipe 5 is fixedly connected between the gas collecting tank 4 and the air bladder 3. A solenoid valve 6 for controlling the gas inlet and outlet is located on the outer side of the connection between the gas guide pipe 5 and the gas collecting tank 4. A valve for controlling the gas pressure is located on the outer side of the gas guide pipe 5. The pneumatic controller 7 and the air duct 5 near the airbag 3 are equipped with an electromagnetic reversing valve 8 for controlling the gas direction. Two sets of electric push rods 13 are symmetrically arranged at the ends of the two sets of slides 11 that are far apart from each other. A PLC controller is provided on the side of the worktable 1. The PLC controller is used to control the status of the drive motor 12, electric push rods 13, pressure sensor and airbag 3. The airbag 3 is used to flexibly clamp the photovoltaic steel. The pneumatic controller 7 is a common pneumatic proportional pressure valve or electro-proportional valve in the prior art. It receives the analog signal (such as 0-10V or 4-20mA) output by the PLC controller and linearly adjusts the gas pressure output to the airbag 3 according to the signal magnitude to achieve precise control of the clamping force. The pressure regulation principle of the pneumatic controller 7 is a conventional technology in the field of pneumatic control. For example, it has been maturely applied in pneumatic components of brands such as SMC or Festo.

[0026] like Figures 2-3As shown, two sets of sliding grooves are symmetrically provided on the worktable 1. The slide 11 is slidably connected to the worktable 1 through the sliding groove. The sliding groove is used for the slide 11 to slide and limit the slide 11. The output end of the drive motor 12 is fixedly connected to the bidirectional threaded rod 10. The drive motor 12 drives the bidirectional threaded rod 10 to rotate and drive the two sets of clamping blocks 2 to move relative to each other. The electric push rod 13 is fixedly installed on the worktable 1. The electric push rod 13 controls the distance between the two sets of slides 11 by pushing the slide 11 to slide along the sliding groove.

[0027] like Figures 4-5 As shown, the shape of the airbag 3 is completely fitted to the inclined surface of the V-shaped base. Four sets of support columns 15 are evenly distributed between the base plate 14 and the workbench 1. The upper end of the support column 15 is fixedly connected to the first connecting block 16. The inner side of the first connecting block 16 is provided with the second connecting block 17. The first connecting block 16 and the second connecting block 17 are fixed by bolts and nuts. The upper end of the air collection tank 4 is provided with an air inlet pipe 9. The upper end of the air inlet pipe 9 is provided with a sealing cap. The airbag 3 is made of thermoplastic polyurethane elastomer material. The outer surface of the airbag 3 can be treated with a fine anti-slip texture to increase friction and enhance the clamping effect. However, the texture must be very fine to prevent leaving indentations on the surface of the steel profile.

[0028] Working principle:

[0029] First, the operator selects the specifications of the steel to be processed through the PLC controller. Then, the PLC controller starts the drive motor 12, which drives the bidirectional threaded rod 10 to rotate, driving the two sets of clamping blocks 2 on the same slide 11 to move relative to each other or away from each other, thereby adjusting the distance between the two jaws on the same clamping unit to adapt to the specific width or cross-sectional size of the steel.

[0030] Next, the photovoltaic steel profile is placed between the clamping blocks 2 on the two sets of oppositely arranged slides 11. The PLC controller starts the two sets of electric push rods 13, pushing the two slides 11 to move towards each other along the slide groove on the worktable 1, completing the centering and preliminary positioning of the workpiece, until the airbag 3 inside the clamping block 2 slightly contacts the surface of the steel profile.

[0031] Subsequently, the pneumatic system starts to work. Compressed air is delivered from the air collection tank 4 through the air guide pipe 5. The airflow is precisely regulated by the air pressure controller 7 and the direction is controlled by the electromagnetic reversing valve 8. The gas is filled into the air bag 3, which expands evenly, flexibly wraps and clamps the steel.

[0032] During this process, the pressure sensor embedded inside the clamping block 2 monitors the clamping force in real time and feeds the data back to the PLC controller. Based on the preset clamping force threshold range, the PLC controller performs closed-loop control on the air pressure controller 7 through the PID control algorithm or lookup table method commonly used in the prior art, dynamically adjusting the air pressure in the airbag 3 to keep the clamping force stable within the set range. The air pressure controller 7 is a pneumatic proportional pressure valve commonly used in the prior art. It receives the analog signal output by the PLC controller and linearly adjusts the gas pressure output to the airbag 3 according to the signal magnitude to achieve precise control of the clamping force.

[0033] Finally, after processing is completed, the PLC controller executes a preset release procedure: First, it controls the solenoid reversing valve 8 to switch to the exhaust position, allowing the gas in the airbag 3 to be discharged, and the airbag to contract to release the clamping force; then, after the pressure sensor confirms that the clamping force has dropped to a safe value, the PLC controller controls the electric push rod 13 to retract, driving the two sets of slides 11 to move in opposite directions, thereby widening the clamping distance, allowing the operator to safely remove the processed workpiece. This release procedure is a conventional sequential control logic based on time sequence or sensor feedback, belonging to existing technology in the field of industrial automation.

[0034] It should be noted that the PLC controller, pressure sensor, pneumatic controller, solenoid valve, electric actuator, and other electrical and pneumatic components and their control logic involved in this utility model are all mature industrial automation components and control methods in the prior art. For example, the PLC controller can be a Siemens S7-200 series, Mitsubishi FX series, etc.; the pneumatic controller can be an SMC ITV series proportional valve; the control program can use a force feedback-based closed-loop PID control algorithm. These technologies are widely used in CNC fixtures, robot grippers, etc., and are not the innovation points of this utility model. The core innovation of this utility model lies in integrating the above-mentioned existing technologies into a photovoltaic steel processing workbench, and solving the problems of workpiece damage and poor adaptability caused by rigid clamping through a flexible airbag clamping structure.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A workbench for processing photovoltaic steel profiles, characterized in that, The system includes a workbench (1), a slide (11) on the workbench (1), clamps (2) on the slide (11), a bidirectional threaded rod (10) inside the slide (11), and a drive motor (12) at the end of the slide (11). Two sets of clamps (2) are arranged opposite each other on the slide (11). The clamps (2) are coaxially arranged with the bidirectional threaded rod (10) and threadedly connected to it. An air bladder (3) is fitted to the inner side of the clamps (2). A pressure sensor is embedded in the inner side of the clamps (2) near the air bladder (3). The clamps (2) on the two sets of slides (11) are arranged opposite each other. The clamps (2) are used to clamp and fix the photovoltaic steel profile. A gas collection tank is located at the upper end of the clamps (2). 4) A gas guide pipe (5) is fixedly connected between the gas collection tank (4) and the air bag (3). An electromagnetic valve (6) for controlling the gas inlet and outlet is provided on the outside of the connection between the gas guide pipe (5) and the gas collection tank (4). A gas pressure controller (7) for controlling the gas pressure is provided on the outside of the gas guide pipe (5). An electromagnetic reversing valve (8) for controlling the gas direction is provided on the part of the gas guide pipe (5) near the air bag (3). Two sets of electric push rods (13) are symmetrically provided at the ends of the two sets of slides (11) that are far apart from each other. A PLC controller is provided on the side of the workbench (1). The PLC controller is used to control the status of the drive motor (12), electric push rod (13), pressure sensor and air bag (3). The air bag (3) is used to flexibly clamp the photovoltaic steel.

2. The workbench for processing photovoltaic steel profiles according to claim 1, characterized in that, Two sets of sliding grooves are symmetrically provided on the workbench (1). The slide (11) is slidably connected to the workbench (1) through the sliding grooves. The sliding grooves are used for the slide (11) to slide and limit the slide (11).

3. The workbench for processing photovoltaic steel profiles according to claim 1, characterized in that, The output end of the drive motor (12) is fixedly connected to the bidirectional threaded rod (10). The drive motor (12) drives the two sets of clamps (2) to move relative to each other by driving the bidirectional threaded rod (10) to rotate.

4. The workbench for processing photovoltaic steel profiles according to claim 1, characterized in that, The electric push rod (13) is fixedly installed on the workbench (1). The electric push rod (13) controls the distance between the two sets of slides (11) by pushing the slide (11) to slide along the slide groove.

5. The workbench for processing photovoltaic steel profiles according to claim 1, characterized in that, The shape of the airbag (3) fits perfectly with the inclined surface of the V-shaped base.

6. The workbench for processing photovoltaic steel profiles according to claim 1, characterized in that, Four sets of support columns (15) are evenly distributed between the base plate (14) and the workbench (1). The upper end of the support column (15) is fixedly connected to the first connecting block (16). The inner side of the first connecting block (16) is provided with the second connecting block (17). The first connecting block (16) and the second connecting block (17) are fixed by bolts and nuts.

7. The workbench for processing photovoltaic steel profiles according to claim 6, characterized in that, The upper end of the gas collection tank (4) is provided with an air inlet pipe (9), and the upper end of the air inlet pipe (9) is provided with a sealing cap.

8. The workbench for processing photovoltaic steel profiles according to claim 1, characterized in that, The airbag (3) is made of thermoplastic polyurethane elastomer material.

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