Precise punching machine for automobile cold-rolled sheet

Abstract

The invention relates to the technical field of cold-rolled sheet punching, in particular to an automobile cold-rolled sheet precision punching machine which comprises a conveying mechanism. The punching device further comprises a punching mechanism and a detection mechanism, and the punching mechanism and the detection mechanism are both installed on the conveying mechanism. The conveying mechanism conveys a cold-rolled sheet, the punching mechanism punches the cold-rolled sheet, and the detection mechanism detects the punching mechanism. According to the cold-rolled sheet punching equipment, the temperature of a cold-rolled sheet is adjusted through the conveying mechanism, the cold-rolled sheet is conveyed to the middle of the punching mechanism, the punching mechanism conducts punching machining on the cold-rolled sheet, then the punched cold-rolled sheet is conveyed out through the conveying mechanism, and in the punching process, the punching mechanism is detected through the detection mechanism, so that the practicability of the equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cold-rolled sheet punching, and particularly to a precision punching machine for automotive cold-rolled sheets. Background Art

[0002] Cold-rolled sheets are products obtained by pickling and cold-rolling hot-rolled coils. During the process of using cold-rolled sheets to manufacture automotive parts, it is necessary to punch the cold-rolled sheets. Generally, a punching machine disclosed in a patent with publication number CN106623595B and a square tube punching machine disclosed in a patent with publication number CN110479856B are used to perform punching operations on cold-rolled sheets.

[0003] However, it is found during use that when punching relatively thick cold-rolled sheets for a long time, the punching tool is prone to chipping. And for some chips with small angles, the tool with chipping can still be used for punching, but the accuracy of the punched holes is likely to change, and it is difficult to observe the change with the naked eye, which easily affects the product quality. Moreover, when punching relatively thick cold-rolled sheets, the punching area of the cold-rolled sheet is prone to deformation protrusion and edge warping, which also affects the product quality, resulting in poor practicality. Therefore, there is an urgent need for a precision punching machine for automotive cold-rolled sheets to improve the above problems. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a precision punching machine for automotive cold-rolled sheets, which adjusts the temperature of the cold-rolled sheet through a conveying mechanism, sends the cold-rolled sheet to the middle of the punching mechanism, enables the punching mechanism to perform punching operations on the cold-rolled sheet, and then sends the punched cold-rolled sheet out through the conveying mechanism. And during the punching process, the punching mechanism is detected by a detection mechanism, thereby improving the practicality of the equipment.

[0005] A precision punching machine for automotive cold-rolled sheets of the present invention includes a conveying mechanism; it also includes a punching mechanism and a detection mechanism, and both the punching mechanism and the detection mechanism are installed on the conveying mechanism;

[0006] The conveying mechanism conveys the cold-rolled sheet, the punching mechanism punches the cold-rolled sheet, and the detection mechanism detects the punching mechanism;

[0007] The temperature of the cold-rolled sheet is adjusted through the conveying mechanism, and the cold-rolled sheet is sent to the middle of the punching mechanism, enabling the punching mechanism to perform punching operations on the cold-rolled sheet, and then the punched cold-rolled sheet is sent out through the conveying mechanism. And during the punching process, the punching mechanism is detected by the detection mechanism, thereby improving the practicality of the equipment.

[0008] Preferably, the conveying mechanism includes a workbench, a frame, multiple groups of guide shafts, two groups of first conveying shafts, two groups of second conveying shafts, a first motor, a second motor, and a constant temperature mechanism. The frame is installed on the top of the workbench, and a working cavity and a constant temperature cavity are provided inside the workbench. Openings are provided at the tops of the left and right ends of the constant temperature cavity. Multiple groups of guide shafts are rotatably installed in the constant temperature cavity. Two groups of first conveying shafts are rotatably installed on the top of the left end of the workbench. Two groups of second conveying shafts are rotatably installed on the top of the right end of the workbench. The first motor and the second motor are both installed on the workbench. The first motor provides power for the two groups of first conveying shafts, and the second motor provides power for the two groups of second conveying shafts. The constant temperature mechanism is installed on the workbench. One end of the cold-rolled plate is inserted into the constant temperature cavity of the workbench through the opening at the right end of the workbench, and the cold-rolled plate is guided by multiple groups of guide shafts. Then, one end of the cold-rolled plate is extended out through the opening at the left end of the workbench and passes between the two groups of first conveying shafts and between the two groups of second conveying shafts in sequence. The heated water is discharged into the constant temperature cavity of the workbench through the constant temperature mechanism, and the temperature of the cold-rolled plate is adjusted by the water in the constant temperature cavity. Then, the first motor and the second motor are turned on to rotate the two groups of first conveying shafts and the second conveying shafts to convey the cold-rolled plate, so that the cold-rolled plate continuously passes through the middle of the punching mechanism, and the punching mechanism punches different positions of the cold-rolled plate, thereby improving the practicability of the equipment.

[0009] Preferably, the constant temperature mechanism includes a filtration tank, multiple groups of filter screens, a circulation pump, a heating tank, multiple groups of heating elements, two first electric control valves, two water spray pipes, two water suction pipes, a connecting pipe, and a cleaning mechanism. The filtration tank, heating elements, and connecting pipe are all installed on the workbench. Multiple groups of filter screens are installed in the filtration tank. The circulation pump is installed on the filtration tank, and the water suction port of the circulation pump communicates with the interior of the filtration tank. Two groups of heating elements are installed in the heating tank. Two first electric control valves are respectively installed at the left end and the rear end of the heating tank, and one first electric control valve is connected to the water discharge port of the circulation pump. One end of the connecting pipe is connected to the other first electric control valve. Two water spray pipes and two water suction pipes are installed in the constant temperature cavity of the workbench, and the two water spray pipes communicate with the connecting pipe. The two water suction pipes communicate with the interior of the filtration tank. Multiple water spray holes are provided on the two water spray pipes, and multiple water suction holes are provided on the two water suction pipes. The cleaning mechanism is installed on the heating tank. An inlet valve is provided at the top of the constant temperature cavity of the workbench; water is discharged into the constant temperature cavity of the workbench to submerge the two water spray pipes and the two water suction pipes. When the cold-rolled sheet passes through the constant temperature cavity of the workbench, the cold-rolled sheet passes between the two water spray pipes and between the two water suction pipes. Then, the circulation pump is turned on, and the water in the constant temperature cavity of the workbench enters the filtration tank through the two water suction pipes. The impurities in the water are filtered by multiple groups of filter screens. Then, the circulation pump discharges the water into the heating tank, and the water is heated by multiple groups of heating elements. The heated water flows through the other first electric control valve and the connecting pipe in sequence and enters the two water spray pipes. The water is sprayed onto the constant temperature cavity of the workbench through multiple water spray holes on the two water spray pipes to adjust the temperature of the cold-rolled sheet. After long-term use, the scale on multiple groups of heating elements is cleaned by the cleaning mechanism, thereby improving the practicability of the equipment.

[0010] Preferably, the cleaning mechanism includes a first piston, multiple groups of second electromagnetic control valves, multiple groups of annular scrapers, two groups of third electromagnetic control valves, two groups of pressure regulating cylinders, two groups of second pistons, two groups of first hydraulic cylinders, and a sewage discharge valve. The first piston is slidably installed in the heating element. Multiple groups of second electromagnetic control valves and multiple groups of annular scrapers are both installed on the first piston, and multiple groups of annular scrapers are respectively sleeved on multiple groups of heating elements. Two groups of pressure regulating cylinders are respectively installed on the left and right parts of the top of the heating box. Two groups of pressure regulating cylinders are respectively installed on the tops of two groups of third electromagnetic control valves. Two groups of second pistons are respectively slidably installed in two groups of pressure regulating cylinders. Two groups of first hydraulic cylinders are respectively fixedly installed on the tops of two groups of pressure regulating cylinders, and the bottoms of two groups of first hydraulic cylinders are respectively connected to the tops of two groups of second pistons. Close two groups of first electromagnetic control valves and multiple groups of second electromagnetic control valves. By extending the left first hydraulic cylinder and contracting the right first hydraulic cylinder, the left second piston slides downward and the right second piston slides upward, pressurizing the inside of the heating box, pushing the first piston to move to the right, so that multiple groups of annular scrapers respectively scrape the scale on multiple groups of heating elements, or reverse the above steps to make the first piston move to the left, so that multiple groups of annular scrapers respectively scrape the scale on multiple groups of heating elements. Then open the sewage discharge valve to discharge the sewage in the heating box, thereby improving the practicability of the equipment.

[0011] Preferably, the punching mechanism includes multiple groups of guide columns, a second hydraulic cylinder, a first chuck, a punching tool, a guide frame, multiple groups of first springs, and a punching and cutting mechanism. Multiple groups of guide columns are all installed on the top of the workbench. The second hydraulic cylinder is installed in the middle of the frame. The first chuck is rotatably installed at the bottom of the second hydraulic cylinder. The punching tool is installed at the bottom of the first chuck. The middle of the guide frame is fixedly installed at the bottom of the second hydraulic cylinder. The left and right parts of the guide frame are respectively slidably installed on multiple groups of guide columns. Multiple groups of first springs are all installed at the bottom end of the guide frame. The punching and cutting mechanism is installed in the working cavity of the workbench. By extending the second hydraulic cylinder, the bottom end of the punching tool is abutted against the top end of the cold-rolled sheet. The punching and cutting mechanism punches an opening at the bottom end of the cold-rolled sheet. Then the punching and cutting mechanism resets. By continuously extending the second hydraulic cylinder, the punching tool punches the cold-rolled sheet, reducing the deformation of the cold-rolled sheet, thereby improving the practicability of the equipment.

[0012] Preferably, the punching mechanism includes multiple groups of third hydraulic cylinders, a lifting table, a second chuck, a punching tool, a third motor, a gear, a toothed ring, and an anti-blocking mechanism. An opening is provided in the middle of the top end of the workbench. Multiple groups of third hydraulic cylinders and the anti-blocking mechanism are both installed in the working cavity of the workbench. The lifting table is installed at the bottom of multiple groups of third hydraulic cylinders. The second chuck is rotatably installed on the lifting table. The punching tool is installed on the second chuck. The third motor is installed at the bottom of the lifting table. The gear is installed on the output shaft of the third motor. The toothed ring is sleeved on the second chuck, and the gear is meshed with the toothed ring. By contracting multiple groups of third hydraulic cylinders, the punching tool passes through the opening of the workbench to punch an opening at the bottom end of the cold-rolled sheet. Then, multiple groups of third hydraulic cylinders reset. When the punching tool punches the cold-rolled sheet, the anti-blocking mechanism discharges air into the punching tool, and the punching tool sprays out the air to prevent the waste generated by punching from falling into the punching tool, thereby improving the practicability of the equipment.

[0013] Preferably, the anti-blocking mechanism includes an air compressor, an air delivery pipe, and a rotary joint. The air compressor is installed in the working cavity of the workbench. One end of the air delivery pipe is connected to the exhaust port of the air compressor. The rotary joint is rotatably installed at the bottom of the second chuck, and a perforation is provided in the second chuck. The other end of the air delivery pipe is connected to the bottom end of the rotary joint. By compressing air with the air compressor and then discharging the compressed air, the compressed air flows through the air delivery pipe, the rotary joint, and the second chuck in sequence and enters the punching tool. The punching tool sprays out the compressed air to prevent waste from falling into the punching tool, thereby improving the practicability of the equipment.

[0014] Preferably, the detection mechanism includes a limit frame, multiple groups of second springs, a fixed frame, a driving wheel, a fourth motor, a first high-definition camera, a second high-definition camera, a controller, and an alarm. The limit frame is installed on the machine frame. The fixed frame is installed on the limit frame through multiple groups of second springs. The driving wheel is rotatably installed on the fixed frame. The fourth motor is installed on the top of the fixed frame, and the output shaft of the fourth motor is connected to the top end of the driving wheel. The first high-definition camera is installed at the bottom of the fixed frame. The second high-definition camera is installed at the top of the working cavity of the workbench. The controller is installed on the top of the machine frame. The alarm is installed on the controller. The second hydraulic cylinder contracts to reset the punching tool and squeeze the driving wheel, causing the multiple groups of second springs to contract. Then, through the elasticity of the multiple groups of second springs, the driving wheel squeezes the bottom of the first chuck, and the fourth motor is turned on to drive the first chuck to rotate by the driving wheel. The rotating punching tool is photographed by the first high-definition camera. By turning on the third motor and meshing the gear with the toothed ring for transmission, the second chuck is driven to rotate, and the rotating punching and cutting tool is photographed by the second high-definition camera. The first high-definition camera and the second high-definition camera transmit the captured images to the controller, enabling the controller to analyze and judge whether there is a chipping situation for the punching tool and the punching and cutting tool. When the controller detects a chipping situation, an alarm is issued through the alarm to remind the staff, thereby improving the practicability of the equipment.

[0015] Preferably, fill light lamps are provided on both the first high-definition camera and the second high-definition camera; thereby improving the clarity of the images captured by the first high-definition camera and the second high-definition camera.

[0016] Preferably, a data preprocessing module, a data analysis module, a data storage module, and a data sending module are provided inside the controller. The data analysis module uses a python framework, a convolutional neural network, and a trained qualified model to analyze the data. Connect the computer to the data sending module. The images captured by the first high-definition camera and the second high-definition camera are processed by the data preprocessing module to adjust the clarity of the images. Then, the analysis module uses a python framework, a convolutional neural network, and a trained qualified model to analyze the data, and transmits the processed image data and analysis results to the data storage module for storage. At the same time, the analysis results are transmitted to the computer through the data sending module, thereby improving the practicability of the equipment.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. The detection mechanism detects the raised punching tool to ensure that when the punching tool has a chipping situation, it is discovered immediately, facilitating the staff to replace the punching tool in a timely manner;

[0019] 2. The punching mechanism first punches and cuts the bottom of the cold-rolled plate and then punches from top to bottom, reducing the occurrence of deformation protrusion or warping at the punching position;

[0020] 3. Before punching, adjust the temperature of the cold-rolled sheet to reduce the situation where the punching accuracy fails to meet the standard due to different temperatures of the cold-rolled sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the first axonometric structural schematic diagram of the present invention;

[0022] Figure 2 is the second axonometric structural schematic diagram of the present invention;

[0023] Figure 3 is the third axonometric structural schematic diagram of the present invention;

[0024] Figure 4 is the front view structural schematic diagram of the present invention;

[0025] Figure 5 is the front view sectional structural schematic diagram of the present invention;

[0026] Figure 6 is the rear view sectional structural schematic diagram of the constant temperature mechanism of the present invention;

[0027] Figure 7 is the first axonometric enlarged schematic diagram of the structures such as the driving wheel and the fourth motor of the present invention;

[0028] Figure 8 is the second axonometric enlarged schematic diagram of the structures such as the driving wheel and the fourth motor of the present invention;

[0029] Figure 9 is the first axonometric enlarged structural schematic diagram of the punching mechanism of the present invention;

[0030] Figure 10 is the second axonometric enlarged structural schematic diagram of the punching mechanism of the present invention.

[0031] Labels in the attached drawings: 1, workbench; 2, frame; 3, guide shaft; 4, first conveyor shaft; 5, second conveyor shaft; 6, first motor; 7, second motor; 8, filter box; 9, filter screen; 10, circulation pump; 11, heating box; 12, heating element; 13, first electric control valve; 14, water spray pipe; 15, water suction pipe; 16, connecting pipe; 17, first piston; 18, second electric control valve; 19, annular scraper; 20, third electric control valve; 21, pressure regulating cylinder; 22, second piston; 23, first hydraulic cylinder; 24, sewage discharge valve; 25, guide post; 26, second hydraulic cylinder; 27, first chuck; 28, punching tool; 29, guide frame; 30, first spring; 31, third hydraulic cylinder; 32, lifting table; 33, second chuck; 34, punching and cutting tool; 35, third motor; 36, gear; 37, toothed ring; 38, air compressor; 39, air delivery pipe; 40, rotary joint; 41, limit frame; 42, second spring; 43, fixed frame; 44, drive wheel; 45, fourth motor; 46, first high-definition camera; 47, second high-definition camera; 48, controller; 49, alarm Detailed implementation mode

[0032] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant attached drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0033] Embodiment 1

[0034] As Figures 1 to 10 shown, a precision punching machine for automotive cold-rolled sheets includes a conveying mechanism; it also includes a punching mechanism and a detection mechanism, and both the punching mechanism and the detection mechanism are installed on the conveying mechanism;

[0035] The conveying mechanism conveys the cold-rolled sheets, the punching mechanism punches the cold-rolled sheets, and the detection mechanism detects the punching mechanism;

[0036] The conveying mechanism includes a workbench 1, a frame 2, multiple groups of guide shafts 3, two groups of first conveyor shafts 4, two groups of second conveyor shafts 5, a first motor 6, a second motor 7, and a constant temperature mechanism. The frame 2 is installed on the top of the workbench 1, and a working chamber and a constant temperature chamber are provided inside the workbench 1. Openings are provided at the tops of the left and right ends of the constant temperature chamber. Multiple groups of guide shafts 3 are rotatably installed in the constant temperature chamber. Two groups of first conveyor shafts 4 are rotatably installed on the top of the left end of the workbench 1. Two groups of second conveyor shafts 5 are rotatably installed on the top of the right end of the workbench 1. The first motor 6 and the second motor 7 are both installed on the workbench 1, and the first motor 6 provides power for the two groups of first conveyor shafts 4, and the second motor 7 provides power for the two groups of second conveyor shafts 5. The constant temperature mechanism is installed on the workbench 1;

[0037] The constant temperature mechanism includes a filter box 8, multiple groups of filter screens 9, a circulation pump 10, a heating box 11, multiple groups of heating elements 12, two groups of first electric control valves 13, two groups of water spray pipes 14, two groups of water suction pipes 15, a connecting pipe 16 and a cleaning mechanism. The filter box 8, the heating elements 12 and the connecting pipe 16 are all installed on the workbench 1. Multiple groups of filter screens 9 are all installed in the filter box 8. The circulation pump 10 is installed on the filter box 8, and the water suction port of the circulation pump 10 communicates with the inside of the filter box 8. Two groups of heating elements 12 are all installed in the heating box 11. Two groups of first electric control valves 13 are respectively installed at the left end and the rear end of the heating box 11, and one group of first electric control valve 13 is connected to the water discharge port of the circulation pump 10. One end of the connecting pipe 16 is connected to the other group of first electric control valve 13. Two groups of water spray pipes 14 and two groups of water suction pipes 15 are all installed in the constant temperature cavity of the workbench 1, and two groups of water spray pipes 14 all communicate with the connecting pipe 16. Two groups of water suction pipes 15 all communicate with the inside of the filter box 8. Multiple groups of water spray holes are arranged on two groups of water spray pipes 14, and multiple groups of water suction holes are arranged on two groups of water suction pipes 15. The cleaning mechanism is installed on the heating box 11. An inlet valve is arranged at the top of the constant temperature cavity of the workbench 1;

[0038] The cleaning mechanism includes a first piston 17, multiple groups of second electric control valves 18, multiple groups of annular scraping knives 19, two groups of third electric control valves 20, two groups of pressure regulating cylinders 21, two groups of second pistons 22, two groups of first hydraulic cylinders 23 and a sewage discharge valve 24. The first piston 17 is slidably installed in the heating element 12. Multiple groups of second electric control valves 18 and multiple groups of annular scraping knives 19 are all installed on the first piston 17, and multiple groups of annular scraping knives 19 are respectively sleeved on multiple groups of heating elements 12. Two groups of pressure regulating cylinders 21 are respectively installed at the left and right parts of the top of the heating box 11. Two groups of pressure regulating cylinders 21 are respectively installed on the tops of two groups of third electric control valves 20. Two groups of second pistons 22 are respectively slidably installed in two groups of pressure regulating cylinders 21. Two groups of first hydraulic cylinders 23 are respectively fixedly installed on the tops of two groups of pressure regulating cylinders 21, and the bottom ends of two groups of first hydraulic cylinders 23 are respectively connected to the top ends of two groups of second pistons 22;

[0039] The punching mechanism includes multiple groups of guide columns 25, a second hydraulic cylinder 26, a first chuck 27, a punching tool 28, a guide frame 29, multiple groups of first springs 30 and a punching and cutting mechanism. Multiple groups of guide columns 25 are all installed on the top of the workbench 1. The second hydraulic cylinder 26 is installed in the middle of the frame 2. The first chuck 27 is rotatably installed at the bottom of the second hydraulic cylinder 26. The punching tool 28 is installed at the bottom of the first chuck 27. The middle of the guide frame 29 is fixedly installed at the bottom of the second hydraulic cylinder 26. The left and right parts of the guide frame 29 are respectively slidably installed on multiple groups of guide columns 25. Multiple groups of first springs 30 are all installed at the bottom end of the guide frame 29. The punching and cutting mechanism is installed in the working cavity of the workbench 1;

[0040] The punching mechanism includes multiple groups of third hydraulic cylinders 31, a lifting table 32, a second chuck 33, a punching tool 34, a third motor 35, a gear 36, a toothed ring 37, and an anti-blocking mechanism. A hole is provided in the middle of the top end of the workbench 1. Multiple groups of third hydraulic cylinders 31 and the anti-blocking mechanism are both installed in the working cavity of the workbench 1. The lifting table 32 is installed at the bottom of multiple groups of third hydraulic cylinders 31. The second chuck 33 is rotatably installed on the lifting table 32. The punching tool 34 is installed on the second chuck 33. The third motor 35 is installed at the bottom of the lifting table 32. The gear 36 is installed on the output shaft of the third motor 35. The toothed ring 37 is sleeved on the second chuck 33, and the gear 36 is meshed with the toothed ring 37;

[0041] The anti-blocking mechanism includes an air compressor 38, an air delivery pipe 39, and a rotary joint 40. The air compressor 38 is installed in the working cavity of the workbench 1. One end of the air delivery pipe 39 is connected to the exhaust port of the air compressor 38. The rotary joint 40 is rotatably installed at the bottom of the second chuck 33, and a through hole is provided in the second chuck 33. The other end of the air delivery pipe 39 is connected to the bottom end of the rotary joint 40;

[0042] The detection mechanism includes a limit frame 41, multiple groups of second springs 42, a fixed frame 43, a driving wheel 44, a fourth motor 45, a first high-definition camera 46, a second high-definition camera 47, a controller 48, and an alarm 49. The limit frame 41 is installed on the frame 2. The fixed frame 43 is installed on the limit frame 41 through multiple groups of second springs 42. The driving wheel 44 is rotatably installed on the fixed frame 43. The fourth motor 45 is installed at the top of the fixed frame 43, and the output shaft of the fourth motor 45 is connected to the top end of the driving wheel 44. The first high-definition camera 46 is installed at the bottom of the fixed frame 43. The second high-definition camera 47 is installed at the top of the working cavity of the workbench 1. The controller 48 is installed at the top of the frame 2. The alarm 49 is installed on the controller 48;

[0043] Fill lights are provided on both the first high-definition camera 46 and the second high-definition camera 47;

[0044] Insert one end of the cold-rolled plate into the constant-temperature chamber of the workbench 1 through the opening at the right end of the workbench 1, and guide the cold-rolled plate through multiple groups of guide shafts 3. Then, extend one end of the cold-rolled plate out of the opening at the left end of the workbench 1 and pass it through between two groups of first conveying shafts 4 and between two groups of second conveying shafts 5 in sequence. Turn on the circulation pump 10 so that the water in the constant-temperature chamber of the workbench 1 enters the filter box 8 through two groups of water suction pipes 15, filter the impurities in the water through multiple groups of filter meshes 9, and then the circulation pump 10 discharges the water into the heating box 11, heat the water through multiple groups of heating elements 12. The heated water flows through another group of first electromagnetic valves 13 and the connecting pipe 16 in sequence and enters into two groups of water spray pipes 14, and spray the water into the constant-temperature chamber of the workbench 1 through multiple groups of water spray holes on the two groups of water spray pipes 14 to adjust the temperature of the cold-rolled plate. Then, turn on the first motor 6 and the second motor 7 to rotate the two groups of first conveying shafts 4 and the second conveying shafts 5, convey the cold-rolled plate between the punching tool 28 and the punching cutter 34. Then, extend the second hydraulic cylinder 26 so that the bottom end of the punching tool 28 abuts against the top end of the cold-rolled plate, contract multiple groups of third hydraulic cylinders 31 to make the punching cutter 34 pass through the opening of the workbench 1 and punch an opening at the bottom end of the cold-rolled plate. Then, multiple groups of third hydraulic cylinders 31 reset, and continue to extend the second hydraulic cylinder 26 to make the punching tool 28 punch holes in the cold-rolled plate. At the same time, compress the air through the air compressor 38, and then the air compressor 38 discharges the compressed air so that the compressed air flows through the air pipe 39, the rotary joint 40, and the second chuck 33 in sequence and enters into the punching cutter 34, and spray the compressed air through the punching cutter 34 to prevent the waste from falling into the punching cutter 34. Then, contract the second hydraulic cylinder 26 to reset the punching tool 28 and squeeze the driving wheel 44 to make multiple groups of second springs 42 contract. Then, through the elasticity of multiple groups of second springs 42, make the driving wheel 44 squeeze the bottom of the first chuck 27, turn on the fourth motor 45 to make the driving wheel 44 drive the first chuck 27 to rotate, and take pictures of the rotating punching tool 28 through the first high-definition camera 46. Drive the second chuck 33 to rotate by turning on the third motor 35 and meshing the gear 36 with the gear ring 37 to make the second high-definition camera 47 take pictures of the rotating punching cutter 34. And the first high-definition camera 46 and the second high-definition camera 47 transmit the captured images to the controller 48, so that the controller 48 analyzes and judges whether the punching tool 28 and the punching cutter 34 have chipping. When the controller 48 detects chipping, an alarm is issued through the alarm 49 to remind the staff, and regularly close two groups of first electromagnetic valves 13 and multiple groups of second electromagnetic valves 18, extend the left first hydraulic cylinder 23 and contract the right first hydraulic cylinder 23 to make the left second piston 22 slide downwards and the right second piston 22 slide upwards to pressurize the inside of the heating box 11, push the first piston 17 to move to the right to make multiple groups of annular scrapers 19 scrape the scale on multiple groups of heating elements 12 respectively, or reverse the above steps to make the first piston 17 move to the left.Let multiple sets of annular scraping knives 19 scrape the scale on multiple sets of heating elements 12 respectively. Then, open the sewage discharge valve 24 to discharge the sewage in the heating tank 11, ensuring the heating efficiency of multiple sets of heating elements 12, thereby improving the practicality of the equipment.

[0045] Embodiment 2

[0046] As Figures 1 to 10 shown, a precision punching machine for automotive cold-rolled sheets includes a conveying mechanism; it also includes a punching mechanism and a detection mechanism, and both the punching mechanism and the detection mechanism are installed on the conveying mechanism;

[0047] The conveying mechanism conveys the cold-rolled sheets, the punching mechanism punches the cold-rolled sheets, and the detection mechanism detects the punching mechanism;

[0048] The conveying mechanism includes a workbench 1, a frame 2, multiple sets of guide shafts 3, two sets of first conveying shafts 4, two sets of second conveying shafts 5, a first motor 6, a second motor 7, and a temperature control mechanism. The frame 2 is installed on the top of the workbench 1, and a working cavity and a temperature control cavity are provided inside the workbench 1. Openings are provided at the tops of the left and right ends of the temperature control cavity. Multiple sets of guide shafts 3 are all rotatably installed in the temperature control cavity. Two sets of first conveying shafts 4 are all rotatably installed at the top of the left end of the workbench 1. Two sets of second conveying shafts 5 are all rotatably installed at the top of the right end of the workbench 1. The first motor 6 and the second motor 7 are both installed on the workbench 1, and the first motor 6 provides power for the two sets of first conveying shafts 4, and the second motor 7 provides power for the two sets of second conveying shafts 5. The temperature control mechanism is installed on the workbench 1;

[0049] The temperature control mechanism includes a filter box 8, multiple sets of filter screens 9, a circulation pump 10, a heating tank 11, multiple sets of heating elements 12, two sets of first electric control valves 13, two sets of water spraying pipes 14, two sets of water suction pipes 15, a connecting pipe 16, and a cleaning mechanism. The filter box 8, the heating elements 12, and the connecting pipe 16 are all installed on the workbench 1. Multiple sets of filter screens 9 are all installed in the filter box 8. The circulation pump 10 is installed on the filter box 8, and the water suction port of the circulation pump 10 communicates with the inside of the filter box 8. Two sets of heating elements 12 are all installed in the heating tank 11. Two sets of first electric control valves 13 are respectively installed at the left end and the rear end of the heating tank 11, and one set of first electric control valve 13 is connected to the water discharge port of the circulation pump 10. One end of the connecting pipe 16 is connected to the other set of first electric control valve 13. Two sets of water spraying pipes 14 and two sets of water suction pipes 15 are all installed in the temperature control cavity of the workbench 1, and the two sets of water spraying pipes 14 are all communicated with the connecting pipe 16. The two sets of water suction pipes 15 are all communicated with the inside of the filter box 8. Multiple sets of water spraying holes are provided on the two sets of water spraying pipes 14, and multiple sets of water suction holes are provided on the two sets of water suction pipes 15. The cleaning mechanism is installed on the heating tank 11. An inlet valve is provided at the top of the temperature control cavity of the workbench 1;

[0050] The cleaning mechanism includes a first piston 17, multiple groups of second electromagnetic control valves 18, multiple groups of annular scraping knives 19, two groups of third electromagnetic control valves 20, two groups of pressure regulating cylinders 21, two groups of second pistons 22, two groups of first hydraulic cylinders 23, and a sewage discharge valve 24. The first piston 17 is slidably installed in the heating element 12. Multiple groups of second electromagnetic control valves 18 and multiple groups of annular scraping knives 19 are both installed on the first piston 17, and multiple groups of annular scraping knives 19 are respectively sleeved on multiple groups of heating elements 12. Two groups of pressure regulating cylinders 21 are respectively installed on the left and right parts of the top of the heating box 11. Two groups of pressure regulating cylinders 21 are respectively installed on the tops of two groups of third electromagnetic control valves 20. Two groups of second pistons 22 are respectively slidably installed in two groups of pressure regulating cylinders 21. Two groups of first hydraulic cylinders 23 are respectively fixedly installed on the tops of two groups of pressure regulating cylinders 21, and the bottom ends of two groups of first hydraulic cylinders 23 are respectively connected to the top ends of two groups of second pistons 22;

[0051] The punching mechanism includes multiple groups of guide posts 25, a second hydraulic cylinder 26, a first chuck 27, a punching tool 28, a guide frame 29, multiple groups of first springs 30, and a punching and cutting mechanism. Multiple groups of guide posts 25 are all installed on the top of the workbench 1. The second hydraulic cylinder 26 is installed in the middle of the frame 2. The first chuck 27 is rotatably installed at the bottom of the second hydraulic cylinder 26. The punching tool 28 is installed at the bottom of the first chuck 27. The middle of the guide frame 29 is fixedly installed at the bottom of the second hydraulic cylinder 26. The left and right parts of the guide frame 29 are respectively slidably installed on multiple groups of guide posts 25. Multiple groups of first springs 30 are all installed at the bottom end of the guide frame 29. The punching and cutting mechanism is installed in the working cavity of the workbench 1;

[0052] The punching and cutting mechanism includes multiple groups of third hydraulic cylinders 31, a lifting platform 32, a second chuck 33, a punching and cutting tool 34, a third motor 35, a gear 36, a toothed ring 37, and an anti-blocking mechanism. An opening is provided in the middle of the top end of the workbench 1. Multiple groups of third hydraulic cylinders 31 and the anti-blocking mechanism are both installed in the working cavity of the workbench 1. The lifting platform 32 is installed at the bottom of multiple groups of third hydraulic cylinders 31. The second chuck 33 is rotatably installed on the lifting platform 32. The punching and cutting tool 34 is installed on the second chuck 33. The third motor 35 is installed at the bottom of the lifting platform 32. The gear 36 is installed on the output shaft of the third motor 35. The toothed ring 37 is sleeved on the second chuck 33, and the gear 36 is meshed with the toothed ring 37;

[0053] The anti-blocking mechanism includes an air compressor 38, an air delivery pipe 39, and a rotary joint 40. The air compressor 38 is installed in the working cavity of the workbench 1. One end of the air delivery pipe 39 is connected to the exhaust port of the air compressor 38. The rotary joint 40 is rotatably installed at the bottom of the second chuck 33, and a perforation is provided in the second chuck 33. The other end of the air delivery pipe 39 is connected to the bottom end of the rotary joint 40;

[0054] The detection mechanism includes a limit frame 41, multiple groups of second springs 42, a fixed frame 43, a driving wheel 44, a fourth motor 45, a first high-definition camera 46, a second high-definition camera 47, a controller 48, and an alarm 49. The limit frame 41 is installed on the frame 2. The fixed frame 43 is installed on the limit frame 41 through multiple groups of second springs 42. The driving wheel 44 is rotatably installed on the fixed frame 43. The fourth motor 45 is installed on the top of the fixed frame 43, and the output shaft of the fourth motor 45 is connected to the top end of the driving wheel 44. The first high-definition camera 46 is installed at the bottom of the fixed frame 43. The second high-definition camera 47 is installed at the top of the working cavity of the workbench 1. The controller 48 is installed on the top of the frame 2. The alarm 49 is installed on the controller 48;

[0055] Fill light lamps are provided on both the first high-definition camera 46 and the second high-definition camera 47;

[0056] The controller 48 internally is provided with a data preprocessing module, a data analysis module, a data storage module, and a data sending module. And the data analysis module uses a python framework, a convolutional neural network, and a qualified trained model to analyze the data;

[0057] Insert one end of the cold-rolled plate into the constant-temperature cavity of the workbench 1 through the opening at the right end of the workbench 1, and guide the cold-rolled plate through multiple groups of guide shafts 3. Then, extend one end of the cold-rolled plate out of the opening at the left end of the workbench 1, and pass it through between two groups of first conveyor shafts 4 and between two groups of second conveyor shafts 5 in sequence. Turn on the circulation pump 10, so that the water in the constant-temperature cavity of the workbench 1 enters the filter box 8 through two groups of water suction pipes 15, filter the impurities in the water through multiple groups of filter meshes 9. Then, the circulation pump 10 discharges the water into the heating box 11, and heats the water through multiple groups of heating elements 12. The heated water flows through another group of first electric control valves 13 and the connecting pipe 16 in sequence, and enters the two groups of water spray pipes 14. Spray the water into the constant-temperature cavity of the workbench 1 through multiple water spray holes on the two groups of water spray pipes 14 to adjust the temperature of the cold-rolled plate. Then, turn on the first motor 6 and the second motor 7 to rotate the two groups of first conveyor shafts 4 and the second conveyor shafts 5, and convey the cold-rolled plate between the punching tool 28 and the punching cutter 34. Then, extend the second hydraulic cylinder 26 to press the bottom end of the punching tool 28 against the top end of the cold-rolled plate. Contract multiple groups of third hydraulic cylinders 31 to make the punching cutter 34 pass through the opening of the workbench 1 and punch an opening at the bottom end of the cold-rolled plate. Then, multiple groups of third hydraulic cylinders 31 reset, and continue to extend the second hydraulic cylinder 26 to punch the cold-rolled plate with the punching tool 28. At the same time, compress the air through the air compressor 38. Then, the air compressor 38 discharges the compressed air, so that the compressed air flows through the air pipe 39, the rotary joint 40, and the second chuck 33 in sequence, and enters the punching cutter 34. Spray the compressed air through the punching cutter 34 to prevent the waste from falling into the punching cutter 34. Then, contract the second hydraulic cylinder 26 to reset the punching tool 28 and squeeze the driving wheel 44, so that multiple groups of second springs 42 contract. Then, through the elasticity of multiple groups of second springs 42, make the driving wheel 44 squeeze the bottom of the first chuck 27. Turn on the fourth motor 45 to make the driving wheel 44 drive the first chuck 27 to rotate, and use the first high-definition camera 46 to photograph the rotating punching tool 28. Drive the second chuck 33 to rotate by turning on the third motor 35 and meshing the gear 36 with the gear ring 37, so that the second high-definition camera 47 photographs the rotating punching cutter 34. And the first high-definition camera 46 and the second high-definition camera 47 transmit the captured images to the controller 48. Process the images captured by the first high-definition camera 46 and the second high-definition camera 47 through the data preprocessing module to adjust the clarity of the images. Then, the analysis module uses the python framework, convolutional neural network, and the trained qualified model to analyze the data, and transmits the processed image data and analysis results to the data storage module for storage. At the same time, transmit the analysis results to the computer through the data sending module. When the analysis module detects a chipping situation, sound an alarm through the alarm 49 to remind the staff, and regularly close the two groups of first electric control valves 13 and multiple groups of second electric control valves 18. Extend the left first hydraulic cylinder 23,The first hydraulic cylinder 23 on the right contracts, causing the second piston 22 on the left to slide downward and the second piston 22 on the right to slide upward, pressurizing the interior of the heating box 11, pushing the first piston 17 to move to the right, enabling multiple sets of annular scrapers 19 to scrape the scale on multiple sets of heating elements 12 respectively. Or reverse the above steps to make the first piston 17 move to the left, enabling multiple sets of annular scrapers 19 to scrape the scale on multiple sets of heating elements 12 respectively. Then open the sewage discharge valve 24 to discharge the sewage in the heating box 11, ensuring the heating efficiency of multiple sets of heating elements 12, thereby improving the practicability of the equipment.

[0058] The main functions achieved by the present invention are: improving the punching accuracy and improving the punching effect;

[0059] 1. Improving the punching accuracy: Before punching, adjust the temperature of the cold-rolled sheet to reduce the situation where the punching accuracy fails to meet the standard due to different temperatures of the cold-rolled sheet. Detect the rising punching tool through the detection mechanism to ensure that when the punching tool has a chipped corner, it can be discovered in the first time, facilitating the staff to replace the punching tool in a timely manner;

[0060] 2. Improving the punching effect: First punch the bottom of the cold-rolled sheet through the punching mechanism, and then punch from top to bottom to reduce the occurrence of deformation protrusion or flanging at the punching location.

[0061] The installation method, connection method or setting method of a precision punching machine for automotive cold-rolled sheets of the present invention are all common mechanical methods, and any implementation that can achieve its beneficial effects can be carried out; The first motor 6, second motor 7, circulation pump 10, heating element 12, first electric control valve 13, second electric control valve 18, third electric control valve 20, first hydraulic cylinder 23, second hydraulic cylinder 26, third hydraulic cylinder 31, third motor 35, air compressor 38, fourth motor 45, first high-definition camera 46, second high-definition camera 47 and alarm 49 of a precision punching machine for automotive cold-rolled sheets of the present invention are purchased on the market. Those skilled in the industry only need to install and operate according to the attached operation manual, without the need for creative labor from those skilled in the art.

[0062] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A precision punching machine for cold-rolled automotive sheets, comprising a conveying mechanism; characterized in that, It further includes a punching mechanism and a detection mechanism, both of which are installed on the conveying mechanism; The conveying mechanism conveys the cold-rolled sheet, the punching mechanism punches the cold-rolled sheet, and the detection mechanism detects the punching mechanism.

2. The precision punching machine for cold-rolled steel sheets of an automobile according to claim 1, characterized in that, The conveying mechanism includes a workbench (1), a frame (2), multiple groups of guide shafts (3), two groups of first conveying shafts (4), two groups of second conveying shafts (5), a first motor (6), a second motor (7) and a constant temperature mechanism. The frame (2) is installed on the top of the workbench (1), and a working cavity and a constant temperature cavity are provided inside the workbench (1). Openings are provided at the tops of the left and right ends of the constant temperature cavity. Multiple groups of guide shafts (3) are rotatably installed in the constant temperature cavity. Two groups of first conveying shafts (4) are rotatably installed on the top of the left end of the workbench (1). Two groups of second conveying shafts (5) are rotatably installed on the top of the right end of the workbench (1). The first motor (6) and the second motor (7) are both installed on the workbench (1), and the first motor (6) provides power for the two groups of first conveying shafts (4), and the second motor (7) provides power for the two groups of second conveying shafts (5). The constant temperature mechanism is installed on the workbench (1).

3. The precision punching machine for cold-rolled steel sheets of an automobile according to claim 2, characterized in that The constant temperature mechanism includes a filter box (8), multiple groups of filter meshes (9), a circulation pump (10), a heating box (11), multiple groups of heating elements (12), two groups of first electric control valves (13), two groups of water spraying pipes (14), two groups of water suction pipes (15), a connecting pipe (16) and a cleaning mechanism. The filter box (8), the heating elements (12) and the connecting pipe (16) are all installed on the workbench (1). Multiple groups of filter meshes (9) are installed in the filter box (8). The circulation pump (10) is installed on the filter box (8), and the water suction port of the circulation pump (10) communicates with the inside of the filter box (8). Two groups of heating elements (12) are installed in the heating box (11). Two groups of first electric control valves (13) are respectively installed at the left end and the rear end of the heating box (11), and one group of first electric control valves (13) is connected to the water discharge port of the circulation pump (10). One end of the connecting pipe (16) is connected to the other group of first electric control valves (13). Two groups of water spraying pipes (14) and two groups of water suction pipes (15) are installed in the constant temperature cavity of the workbench (1), and the two groups of water spraying pipes (14) communicate with the connecting pipe (16). The two groups of water suction pipes (15) communicate with the inside of the filter box (8). Multiple groups of water spraying holes are provided on the two groups of water spraying pipes (14), and multiple groups of water suction holes are provided on the two groups of water suction pipes (15). The cleaning mechanism is installed on the heating box (11). An inlet valve is provided at the top of the constant temperature cavity of the workbench (1).

4. The precision punching machine for cold-rolled steel sheets of an automobile according to claim 3, wherein The cleaning mechanism includes a first piston (17), multiple groups of second electromagnetic control valves (18), multiple groups of annular scrapers (19), two groups of third electromagnetic control valves (20), two groups of pressure regulating cylinders (21), two groups of second pistons (22), two groups of first hydraulic cylinders (23) and a sewage discharge valve (24). The first piston (17) is slidably installed in the heating element (12). Multiple groups of second electromagnetic control valves (18) and multiple groups of annular scrapers (19) are both installed on the first piston (17), and multiple groups of annular scrapers (19) are respectively sleeved on multiple groups of heating elements (12). Two groups of pressure regulating cylinders (21) are respectively installed on the left and right parts of the top of the heating box (11). Two groups of pressure regulating cylinders (21) are respectively installed on the tops of two groups of third electromagnetic control valves (20). Two groups of second pistons (22) are respectively slidably installed in two groups of pressure regulating cylinders (21). Two groups of first hydraulic cylinders (23) are respectively fixedly installed on the tops of two groups of pressure regulating cylinders (21), and the bottom ends of two groups of first hydraulic cylinders (23) are respectively connected to the top ends of two groups of second pistons (22).

5. The precision punching machine for cold-rolled steel sheets of an automobile according to claim 2, characterized in that The punching mechanism includes multiple groups of guide posts (25), a second hydraulic cylinder (26), a first chuck (27), a punching tool (28), a guide frame (29), multiple groups of first springs (30) and a punching and cutting mechanism. Multiple groups of guide posts (25) are all installed on the top of the workbench (1). The second hydraulic cylinder (26) is installed in the middle of the frame (2). The first chuck (27) is rotatably installed at the bottom of the second hydraulic cylinder (26). The punching tool (28) is installed at the bottom of the first chuck (27). The middle of the guide frame (29) is fixedly installed at the bottom of the second hydraulic cylinder (26). The left and right parts of the guide frame (29) are respectively slidably installed on multiple groups of guide posts (25). Multiple groups of first springs (30) are all installed at the bottom end of the guide frame (29). The punching and cutting mechanism is installed in the working cavity of the workbench (1).

6. The precision punching machine for automotive cold-rolled sheets according to claim 5, characterized in that The punching and cutting mechanism includes multiple groups of third hydraulic cylinders (31), a lifting table (32), a second chuck (33), a punching and cutting tool (34), a third motor (35), a gear (36), a toothed ring (37) and an anti-blocking mechanism. An opening is provided in the middle of the top end of the workbench (1). Multiple groups of third hydraulic cylinders (31) and the anti-blocking mechanism are both installed in the working cavity of the workbench (1). The lifting table (32) is installed at the bottom of multiple groups of third hydraulic cylinders (31). The second chuck (33) is rotatably installed on the lifting table (32). The punching and cutting tool (34) is installed on the second chuck (33). The third motor (35) is installed at the bottom of the lifting table (32). The gear (36) is installed on the output shaft of the third motor (35). The toothed ring (37) is sleeved on the second chuck (33), and the gear (36) is meshed with the toothed ring (37).

7. The precision punching machine for cold-rolled steel sheets of an automobile according to claim 6, characterized in that, The anti-blocking mechanism includes an air compressor (38), an air delivery pipe (39) and a rotary joint (40). The air compressor (38) is installed in the working cavity of the workbench (1). One end of the air delivery pipe (39) is connected to the exhaust port of the air compressor (38). The rotary joint (40) is rotatably installed at the bottom of the second chuck (33), and a perforation is provided in the second chuck (33). The other end of the air delivery pipe (39) is connected to the bottom end of the rotary joint (40).

8. The precision punching machine for cold-rolled steel sheets of an automobile according to claim 2, characterized in that, The detection mechanism includes a limit frame (41), multiple groups of second springs (42), a fixed frame (43), a driving wheel (44), a fourth motor (45), a first high-definition camera (46), a second high-definition camera (47), a controller (48) and an alarm (49). The limit frame (41) is installed on the frame (2). The fixed frame (43) is installed on the limit frame (41) through multiple groups of second springs (42). The driving wheel (44) is rotatably installed on the fixed frame (43). The fourth motor (45) is installed on the top of the fixed frame (43), and the output shaft of the fourth motor (45) is connected to the top end of the driving wheel (44). The first high-definition camera (46) is installed at the bottom of the fixed frame (43). The second high-definition camera (47) is installed at the top of the working cavity of the workbench (1). The controller (48) is installed on the top of the frame (2). The alarm (49) is installed on the controller (48).

9. The precision punching machine for cold-rolled steel sheets of an automobile according to claim 8, characterized in that, Fill light lamps are provided on both the first high-definition camera (46) and the second high-definition camera (47).

10. A precision punching machine for automotive cold-rolled sheets as described in claim 8, characterized in that, A data preprocessing module, a data analysis module, a data storage module and a data sending module are provided inside the controller (48), and the data analysis module uses a python framework, a convolutional neural network and a trained qualified model to analyze the data.

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