Silicon steel sheet stacking device for transformer core

Abstract

The present invention discloses a silicon steel sheet stacking device for the core of an instrument transformer, which relates to the technical field of instrument transformers and is applied to a controller. The controller includes a status monitoring module, a data storage and display module, and a fault diagnosis module. The status monitoring module is used to monitor the status information of the motor on the device, the position information of the upper clamping plate and the lower clamping plate, and the pressure information of the silicon steel sheet during the stacking process and analyze them to obtain a monitoring and analysis result. The controller in the present invention integrates multiple functional modules. Among them, the status monitoring module can, with the help of the sensing and acquisition module, obtain in real time the status information of the motor, the position information of the upper clamping plate and the lower clamping plate, the pressure information of the silicon steel sheet during the stacking process, and the monitoring and analysis result, enabling the operator to comprehensively and real-time grasp the operation conditions of the key components of the device, promptly detect the subtle changes of the device, and provide a strong guarantee for the stable operation of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and particularly to a silicon steel sheet stacking device for the core of a transformer. Background Art

[0002] At present, there are mainly three methods for stacking silicon steel sheets: manual stacking method, mechanical stacking method, and automatic stacking method. Although the manual stacking method has the characteristics of being simple and easy to operate, without the need for special equipment and complex technology, it has obvious deficiencies such as low efficiency and limited application scope; the mechanical stacking method has relatively high efficiency and relatively stable stacking quality, but the equipment purchase price is high, and professional technicians are required for operation and maintenance; the automatic stacking method has a high degree of intelligence, high stacking efficiency, stable quality, and can complete multiple processes at one time. However, its equipment price is expensive and it has a high degree of dependence on professional technicians. Considering the comprehensive factors of cost and efficiency, the mechanical stacking method is mostly used for the production of transformer cores. However, this method is a semi-automatic operation and requires an operator to fill materials. In the actual operation process, it is very easy to make mistakes such as stacking silicon steel sheets without alignment, which will undoubtedly have a serious impact on the product quality.

[0003] In addition, there are many problems to be solved urgently in the operation monitoring of traditional silicon steel sheet stacking equipment. The stacking of silicon steel sheets involves multiple key links and components, such as the stable operation of the motor, the precise position control of the clamping plate, and the uniformity of the pressure on the silicon steel sheets. Any deviation in any link may lead to a decline in stacking quality. However, the previous equipment generally lacks comprehensive and effective monitoring means and is difficult to detect these potential problems in real time and accurately. It is often only noticed after obvious quality defects appear in the product, resulting in a large waste of production resources and a significant reduction in production efficiency. Therefore, it is necessary to propose a silicon steel sheet stacking device for the core of a transformer to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to propose a silicon steel sheet stacking device for the core of a transformer to solve the deficiencies existing in the prior art.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A silicon steel sheet stacking device for the core of a transformer, including an equipment shell. It is characterized in that an installation opening is provided on one side of the equipment shell, and an observation window is slidably connected in the installation opening. A controller is fixedly installed on one side of the upper end of the front surface of the equipment shell. An equipment box is provided on the bottom surface of the equipment shell. An installation opening is provided on the front surface of the equipment box, and box doors are hinged on both sides of the installation opening. A stacking assembly is provided in the middle of the top surface of the equipment box. A motor is arranged in the stacking assembly. A base is installed on the top surface of the equipment box, and an upper clamping plate and a lower clamping plate are arranged on the upper side of the base;

[0007] The controller includes a monitoring and setting module, a status monitoring module, a data storage and display module, and a fault diagnosis module; the monitoring and setting module is used to take the starting moment of the motor as the first moment and the shutdown moment of the motor as the second moment; if there is no shutdown moment of the motor, the current moment is taken as the second moment; the time region between the first moment and the second moment is marked as the motor monitoring time zone; the status monitoring module is used to monitor the status information of the motor on the equipment, the position information of the upper clamping plate and the lower clamping plate, and the pressure information received by the silicon steel sheet during the laminating process and analyze them to obtain a monitoring and analysis result; among them, the monitoring and analysis result includes a motor status value, a normal deviation value, an infrared thermal image value, a position deviation influence value, a pressure average value, a pressure difference value, a laminating influence value, a laminating fluctuation value, and a pressure image value.

[0008] The fault diagnosis module is used to receive the monitoring and analysis result, compare the monitoring and analysis result with a set threshold, generate a corresponding signaling and execute a corresponding operation; the data storage and display module is used to receive the monitoring and analysis result for storage and display the monitoring and analysis result.

[0009] Preferably, the laminating assembly includes a motor box, the bottom surface of the motor box is fixedly installed on one side of the top surface of the equipment box, the motor is arranged inside the motor box, the upper end surface of the motor is fixedly installed on the inner top surface of the equipment box, the output shaft of the motor passes through the top surface of the equipment box through a coupling and is connected with a driving gear, a driven gear is cooperatively abutted on one side of the driving gear, the driven gear is fixedly connected to the lower end side of the bidirectional threaded rod, and the bottom end of the bidirectional threaded rod is rotatably connected to the top surface of the equipment box.

[0010] Preferably, the surface of the bidirectional threaded rod is respectively threadedly connected with the upper clamping plate and the lower clamping plate, a base is arranged directly below the lower clamping plate, the bottom surface of the base is fixedly installed on the top surface of the equipment box, and four guide posts are uniformly and vertically fixedly connected around the top surface of the base, and the guide posts are slidably connected to the surfaces of the upper clamping plate and the lower clamping plate.

[0011] Preferably, the controller further includes a sensing and acquisition module; the sensing and acquisition module is used to collect the status information of the motor, the position information of the upper clamping plate and the lower clamping plate, and the pressure information received by the silicon steel sheet during the laminating process through a sensor group; the sensor group includes a current sensor, a voltage sensor, a temperature sensor, a vibration sensor, an infrared sensor, a position sensor, and a pressure sensor.

[0012] The current sensor and voltage sensor are connected to the circuit of the motor, and a temperature sensor, a vibration sensor, and an infrared sensor are installed on the motor housing; the current sensor, voltage sensor, vibration sensor, and temperature sensor are respectively used to collect the current, voltage, vibration frequency, and surface temperature of the motor, and the infrared sensor is used to collect the surface infrared image of the motor; the position sensor is arranged on the guide post between the upper clamping plate and the lower clamping plate and is used to collect the position information of the upper clamping plate and the lower clamping plate; a plurality of pressure sensors are uniformly arranged on the stacking table and are used to monitor the pressure information received by the silicon steel sheets during the stacking process.

[0013] Preferably, monitor the state information of the motor on the monitoring device and analyze it as follows:

[0014] Obtain the state information of the motor, including current, voltage, vibration frequency, and surface temperature; set the normal value of any parameter in the state information, and calculate the difference between the value of any parameter in the state information and its normal value to obtain the normal deviation difference; perform weighted processing on the normal deviation differences of all parameters in the state information to obtain the normal deviation value;

[0015] Obtain the infrared image of any side of the motor, analyze the infrared image of the motor, and obtain the infrared thermal shadow value;

[0016] Perform weighted processing on the normal deviation value and the infrared thermal shadow value within the monitoring time zone of the motor to obtain the motor state value.

[0017] Preferably, monitor the position information of the upper clamping plate and the lower clamping plate and analyze it as follows:

[0018] Obtain the current production task, extract the predetermined movement modes of the upper clamping plate and the lower clamping plate from the production task, and extract the preset movement trajectories and speeds of the upper clamping plate and the lower clamping plate during the stacking process from the predetermined movement modes; the movement trajectories include the positions of the upper clamping plate and the lower clamping plate on the guide post and the corresponding moments;

[0019] Calculate the position deviation between the positions of the upper clamping plate and the lower clamping plate at any moment in the monitoring time zone of the motor and their preset positions to obtain the position deviation value;

[0020] Perform weighted processing on all the position deviation values within the operating time zone of the motor to obtain the position deviation influence value.

[0021] Preferably, monitor the pressure information received by the silicon steel sheets during the stacking process and analyze it as follows:

[0022] Divide the silicon steel sheet into several lamination areas, and assign lamination weights to the lamination areas; obtain the pressure value of any lamination area, and calculate the average pressure value by averaging the pressure values of all lamination areas; calculate the difference between the maximum and minimum pressure values among all lamination areas to obtain the pressure difference value; calculate the difference between the pressure value of any lamination area and its preset pressure value to obtain the pressure difference; perform weighted summation on the pressure differences of all lamination areas and the corresponding lamination weights of the lamination areas to obtain the lamination influence value;

[0023] Obtain the lamination influence value at any acquisition moment within the motor monitoring time zone and calculate the variance to obtain the lamination fluctuation value;

[0024] Perform weighted processing on the average pressure value, the pressure difference value, the lamination influence value, and the lamination fluctuation value to obtain the pressure and lamination influence value.

[0025] Preferably, analyze the infrared image of the motor, specifically:

[0026] Obtain the infrared image of any side of the motor, and magnify the infrared image to obtain a pixel grid image; identify the color value of any pixel grid in the pixel grid image; set a group of calorific value value ranges, including several calorific value value ranges, and assign a calorific value weight e to each calorific value value range; match the color value of the pixel grid with its group of calorific value value ranges, and mark the pixel grids in the same calorific value value range as the same amplitude pixel grids; connect adjacent same amplitude pixel grids to obtain the same amplitude calorific value area; calculate the area of the same amplitude calorific value area and mark it as the amplitude value, and cancel the marking of the same amplitude calorific value area whose amplitude value is less than the preset screening area threshold; count the number of the same amplitude calorific value areas within the calorific value value range and mark it as the same amplitude number; calculate the average value of the color values of all pixel grids in the same amplitude calorific value area to obtain the amplitude average value;

[0027] Calculate the same amplitude heat and lamination influence value by calculating the amplitude value, the same amplitude number, and the amplitude average value of the same amplitude calorific value areas in the same calorific value value range;

[0028] Perform weighted processing on the same amplitude heat and lamination influence values of different calorific value value ranges and their corresponding calorific value weights to obtain the heat and lamination influence value;

[0029] Perform weighted processing on the heat and lamination influence values of the infrared images of each side of the motor to obtain the infrared heat and lamination influence value.

[0030] Preferably, receive the monitoring and analysis result, compare the monitoring and analysis result with the set threshold, generate the corresponding signaling and execute the corresponding operation; specifically as follows:

[0031] Obtain the monitoring and analysis result including the motor state value, the position deviation influence value, and the pressure and lamination influence value;

[0032] If the motor status value is greater than its set abnormal threshold range, generate a motor overall status fault signal; if the constant deviation value is within its set abnormal threshold range, generate a motor overall status abnormal signal; if the constant deviation value is less than its set abnormal threshold range, it indicates that the motor is in a normal state and generate a motor normal signal; if the position deviation influence value is greater than its set abnormal threshold range, it indicates that there is a serious deviation between the upper clamping plate and the lower clamping plate and the preset position, and generate a serious deviation signal; if the position deviation influence value is within its set abnormal threshold range, it indicates that there is a slight deviation between the upper clamping plate and the lower clamping plate and the preset position, and generate a slight deviation signal; if the position deviation influence value is less than its set abnormal threshold range, it indicates that the positions of the upper clamping plate and the lower clamping plate are in a normal state; if the lamination pressure value is not within its set normal threshold range, generate a comprehensive abnormal signal for the lamination pressure of silicon steel sheets.

[0033] Send all signals to the data storage and display module; the data storage and display module receives all signals and records the reception time for display.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] 1. The present invention realizes the function of mechanically laminating silicon steel sheets through the cooperation of the motor and the bidirectional threaded rod, and the limit ring and the spring assist in aligning the silicon steel sheets, reducing the lamination quality problems caused by the offset of the silicon steel sheets.

[0036] 2. The controller in the present invention integrates multiple functional modules. Among them, the status monitoring module, with the help of the sensing and acquisition module, can obtain the status information of the motor, the position information of the upper clamping plate and the lower clamping plate, the pressure information of the silicon steel sheets during the lamination process and the monitoring and analysis results in real time, enabling the operator to comprehensively and real-time grasp the operation conditions of the key components of the equipment, promptly detect the subtle changes of the equipment, and provide a strong guarantee for the stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0038] Figure 1 is a three-dimensional schematic diagram of the overall appearance of the device proposed by the present invention;

[0039] Figure 2 is a front view schematic diagram of the overall appearance of the device proposed by the present invention;

[0040] Figure 3 is a side view schematic diagram of the overall appearance of the device proposed by the present invention;

[0041] Figure 4 is a three-dimensional schematic diagram of the structure of the lamination assembly proposed by the present invention;

[0042] Figure 5 This is the front cross-sectional schematic diagram of the laminated component structure proposed by the present invention;

[0043] Figure 6 This is the principle block diagram of the controller proposed by the present invention.

[0044] Reference numerals in the figure: 1, equipment shell; 2, observation window; 3, controller; 4, equipment box; 5, box door; 6, motor box; 7, motor; 8, driving gear; 9, driven gear; 10, bidirectional threaded rod; 11, upper clamping plate; 12, lower clamping plate; 13, base; 14, lamination table; 15, limit ring; 16, pressing head; 17, mounting bolt; 18, spring. Specific embodiments

[0045] 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.

[0046] See Figures 1-6 , the silicon steel sheet stacking device for the iron core of the mutual inductor in the present invention,

[0047] It includes an equipment shell 1. An installation opening is provided on one side of the equipment shell 1. An observation window 2 is slidably connected in the installation opening. One side of the upper end of the front end face of the equipment shell 1 is fixedly installed with a controller 3. The bottom surface of the equipment shell 1 is provided with an equipment box 4. An installation opening is provided on the front end face of the equipment box 4. Box doors 5 are hinged on both sides of the installation opening. A lamination assembly is provided in the middle of the top surface of the equipment box 4. A motor 7 is arranged in the lamination assembly. A base 13 is installed on the top surface of the equipment box 4. An upper clamping plate 11 and a lower clamping plate 12 are arranged above the base 13;

[0048] The controller 3 includes a monitoring and setting module, a state monitoring module, a data storage and display module, and a fault diagnosis module; the monitoring and setting module is used to take the start time of the motor 7 as the first time and the shutdown time of the motor 7 as the second time; if there is no shutdown time of the motor 7, the current time is taken as the second time; the time period between the first time and the second time is marked as the motor monitoring time zone; the state monitoring module is used to monitor the state information of the motor 7 on the equipment, the position information of the upper clamping plate 11 and the lower clamping plate 12, and the pressure information received by the silicon steel sheet during the lamination process and analyze them to obtain a monitoring and analysis result; among them, the monitoring and analysis result includes a motor state value, a normal deviation value, an infrared thermal image value, a position deviation influence value, a pressure average value, a pressure difference value, a lamination influence value, a lamination fluctuation value, and a pressure image value;

[0049] A fault diagnosis module, which is configured to receive the monitoring and analysis results, compare the monitoring and analysis results with the set thresholds, generate corresponding signaling, and perform corresponding operations; a data storage and display module is configured to receive the monitoring and analysis results for storage and display the monitoring and analysis results.

[0050] In this application, the stacking assembly includes a motor box 6, the bottom surface of the motor box 6 is fixedly installed on one side of the top surface of the equipment box 4, a motor 7 is arranged inside the motor box 6, the upper end surface of the motor 7 is fixedly installed on the inner top surface of the equipment box 4, the output shaft of the motor 7 passes through the top surface of the equipment box 4 through a coupling and is connected to a driving gear 8, a driven gear 9 is arranged on one side of the driving gear 8 in a mating and abutting manner, the driven gear 9 is fixedly connected to the lower end side of the side surface of a bidirectional threaded rod 10, and the bottom end of the bidirectional threaded rod 10 is rotatably connected to the top surface of the equipment box 4.

[0051] In this application, the surface of the bidirectional threaded rod 10 is respectively threadedly connected to an upper clamping plate 11 and a lower clamping plate 12, a base 13 is arranged directly below the lower clamping plate 12, the bottom surface of the base 13 is fixedly installed on the top surface of the equipment box 4, and four guide posts are uniformly and vertically fixedly connected to the periphery of the top surface of the base 13, and the guide posts are slidably connected to the surfaces of the upper clamping plate 11 and the lower clamping plate 12.

[0052] In this application, the controller further includes a sensing and acquisition module; the sensing and acquisition module is configured to collect the state information of the motor 7, the position information of the upper clamping plate 11 and the lower clamping plate 12, and the pressure information received by the silicon steel sheets during the stacking process through a sensor group; the sensor group includes a current sensor, a voltage sensor, a temperature sensor, a vibration sensor, an infrared sensor, a position sensor, and a pressure sensor;

[0053] The current sensor and the voltage sensor are connected to the circuit of the motor 7, and a temperature sensor, a vibration sensor, and an infrared sensor are installed on the outer shell of the motor 7; the current sensor, the voltage sensor, the vibration sensor, and the temperature sensor are respectively configured to collect the current, voltage, vibration frequency, and surface temperature of the motor 7, and the infrared sensor is configured to collect the surface infrared image of the motor 7; the position sensor is arranged on the guide post between the upper clamping plate 11 and the lower clamping plate 12 and is configured to collect the position information of the upper clamping plate 11 and the lower clamping plate 12; a plurality of pressure sensors are arranged and uniformly arranged on the stacking table 14 and are configured to monitor the pressure information received by the silicon steel sheets during the stacking process.

[0054] In this application, the state information of the motor 7 on the monitoring device is monitored and analyzed, and the specific analysis is as follows:

[0055] Obtain the status information of the motor 7, including current, voltage, vibration frequency, and surface temperature; set the normal value of any parameter in the status information, calculate the difference between the value of any parameter in the status information and its normal value to obtain the normal deviation difference CPi, where i represents the number of the parameter in the status information; perform a weighted process on the normal deviation differences of all parameters in the status information to obtain the normal deviation value P, and the formula is expressed as: ; where n represents the number of parameters in the status information, and pi represents the weight corresponding to parameter i in the status information;

[0056] Obtain the infrared image of any side of the motor 7, analyze the infrared image of the motor 7 to obtain the infrared thermal shadow value F;

[0057] Perform a weighted process on the normal deviation value and the infrared thermal shadow value in the motor monitoring time zone, and the formula is expressed as: , to obtain the motor status value G; where t represents the number of the acquisition moment in the motor monitoring time zone, T represents the number of acquisition moments in the motor monitoring time zone, tP and tF respectively represent the normal deviation value and the infrared thermal shadow value corresponding to the acquisition moment t in the motor monitoring time zone, and ta1 and ta2 respectively represent the weights corresponding to the normal deviation value and the infrared thermal shadow value corresponding to the acquisition moment t in the motor monitoring time zone.

[0058] In this application, monitor and analyze the position information of the upper clamping plate 11 and the lower clamping plate 12, and the specific analysis is as follows:

[0059] Obtain the current production task, extract the predetermined motion modes of the upper clamping plate 11 and the lower clamping plate 12 from the production task, and extract the preset motion trajectories and speeds of the upper clamping plate 11 and the lower clamping plate 12 during the laminating process from the predetermined motion modes; the motion trajectories include the positions of the upper clamping plate 11 and the lower clamping plate 12 on the guide posts and the corresponding moments;

[0060] Calculate the position deviation between the positions of the upper clamping plate 11 and the lower clamping plate 12 at any moment in the motor monitoring time zone and their preset positions to obtain the position deviation value WZt, where t represents the number of the acquisition moment in the motor monitoring time zone;

[0061] Perform a weighted process on all the position deviation values in the motor operation time zone to obtain the position deviation influence value W, and the formula is expressed as: ; where tc represents the weight of the position deviation value at the acquisition moment t in the motor monitoring time zone.

[0062] In this application, monitor and analyze the pressure information received by the silicon steel sheets during the laminating process, and the specific analysis is as follows:

[0063] Divide the silicon steel sheets into several lamination areas, and assign lamination weights to the lamination areas; obtain the pressure value of any lamination area, and calculate the average pressure value YL1 by averaging the pressure values of all lamination areas; calculate the difference between the maximum and minimum pressure values in all lamination areas to obtain the pressure difference value YL2; calculate the difference between the pressure value of any lamination area and its preset pressure value to obtain the pressure difference; perform weighted summation processing on the pressure differences of all lamination areas and the lamination weights corresponding to the lamination areas to obtain the lamination influence value YL3;

[0064] Obtain the lamination influence value at any acquisition moment in the motor monitoring time zone and calculate the variance to obtain the lamination fluctuation value YL4;

[0065] Perform weighted processing on the average pressure value, the pressure difference value, the lamination influence value, and the lamination fluctuation value to obtain the pressure influence value YL. The formula is expressed as: ; where y1, y2, y3, and y4 respectively represent the weights corresponding to the average pressure value, the pressure difference value, the lamination influence value, and the lamination fluctuation value.

[0066] In this application, analyze the infrared image of the motor 7, specifically:

[0067] Obtain the infrared image of any side of the motor 7, and magnify the infrared image to obtain a pixel grid image; identify the color value of any pixel grid in the pixel grid image; set a group of calorific value value ranges, including several calorific value value ranges, and assign calorific value weights e to each calorific value value range; match the color value of the pixel grid with its group of calorific value value ranges, and mark the pixel grids in the same calorific value value range as the same amplitude pixel grids; connect adjacent same amplitude pixel grids to obtain the same amplitude calorific value area; calculate the area of the same amplitude calorific value area and mark it as the amplitude value FM1, and cancel the marking of the same amplitude calorific value area whose amplitude value is less than the preset screening area threshold; count the number of the same amplitude calorific value areas within the calorific value value range and mark it as the same amplitude number FM2; calculate the average value of the color values of all pixel grids in the same amplitude calorific value area to obtain the amplitude average value FM3;

[0068] Calculate the same amplitude heat influence value FM from the amplitude value, the same amplitude number, and the amplitude average value of the same amplitude calorific value areas in the same calorific value value range. The formula is expressed as: ; where m1, m2, and m3 respectively represent the weights corresponding to the amplitude value, the same amplitude number, and the amplitude average value of the same amplitude calorific value area;

[0069] Perform weighted processing on the same amplitude heat influence values of different calorific value value ranges and their corresponding calorific value weights to obtain the heat influence value F1. The formula is expressed as ; where m represents the serial number of the calorific value range in the calorific value range group, M represents the number of calorific value ranges in the calorific value range group, mFM and em respectively represent the same - amplitude thermal shadow value and the corresponding calorific value weight of the calorific value range m in the calorific value range group;

[0070] Perform weighted processing on the thermal shadow values of the infrared images of each surface of the motor 7 to obtain the infrared thermal shadow value F, which is expressed by the formula: ; where b represents the serial number of the surface where the infrared image is collected on the motor 7, B represents the number of surfaces where the infrared image is collected, bF1 and bj respectively represent the thermal shadow value and the corresponding weight of the infrared image with the surface serial number b.

[0071] In this application, receive the monitoring and analysis results, compare the monitoring and analysis results with the set threshold values, generate corresponding signaling, and execute corresponding operations; specifically as follows:

[0072] Obtain the monitoring and analysis results including the motor state value, position deviation influence value, and pressing shadow value;

[0073] If the motor state value is greater than its set abnormal threshold range, generate a motor overall state fault signaling; if the deviation value is within its set abnormal threshold range, generate a motor overall state abnormal signaling; if the deviation value is less than its set abnormal threshold range, it means the motor is in a normal state, and generate a motor normal signaling;

[0074] If the position deviation influence value is greater than its set abnormal threshold range, it indicates that the upper clamping plate 11 and the lower clamping plate 12 have a serious deviation from the preset position, and generate a serious deviation signaling; if the position deviation influence value is within its set abnormal threshold range, it means that the upper clamping plate 11 and the lower clamping plate 12 have a slight deviation from the preset position, and generate a slight deviation signaling; if the position deviation influence value is less than its set abnormal threshold range, it means that the positions of the upper clamping plate 11 and the lower clamping plate 12 are in a normal state;

[0075] If the pressing shadow value is not within its set normal threshold range, generate a comprehensive abnormal signaling for the silicon steel sheet lamination pressure;

[0076] Send all the signaling to the data storage and display module; the data storage and display module receives all the signaling, records the reception time, and displays it.

[0077] As mentioned above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A silicon steel sheet stacking device for the core of a mutual inductor, comprising an equipment shell (1), characterized in that, One side of the device housing (1) is provided with an installation opening. On one side of the upper end of the front surface of the device housing (1), a controller (3) is fixedly installed. On the bottom surface of the device housing (1), there is a device box (4). In the middle of the top surface of the device box (4), there is a stacking and pressing assembly. A motor (7) is arranged inside the stacking and pressing assembly. A base (13) is installed on the top surface of the device box (4). An upper clamping plate (11) and a lower clamping plate (12) are arranged above the base (13). The controller (3) includes a monitoring and setting module, a status monitoring module, a data storage and display module, and a fault diagnosis module. The monitoring and setting module takes the starting moment of the motor (7) as the first moment and the shutdown moment as the second moment. If there is no shutdown moment, the current moment is taken as the second moment, and the time interval between the two moments is the motor monitoring time zone. The status monitoring module is used to monitor the status information of the motor (7), the position information of the upper clamping plate (11) and the lower clamping plate (12), and the pressure information of the silicon steel sheet and analyze them to obtain a monitoring and analysis result. Among them, the status information of the motor (7) is monitored and analyzed as follows: Obtain the status information of the motor (7), including current, voltage, vibration frequency, and surface temperature. Set the normal value of any parameter in the status information, and calculate the difference between the value of any parameter in the status information and its normal value to obtain the normal deviation difference. Perform a weighted process on the normal deviation differences of all parameters in the status information to obtain the normal deviation value. Obtain the infrared image of any side of the motor (7), and analyze the infrared image of the motor (7) to obtain the infrared thermal shadow value. Perform a weighted process on the normal deviation value and the infrared thermal shadow value in the motor monitoring time zone to obtain the motor status value. The position information of the upper clamping plate (11) and the lower clamping plate (12) is monitored and analyzed as follows: Obtain the current production task, extract the predetermined movement patterns of the upper clamping plate (11) and the lower clamping plate (12) from the production task, and extract the preset movement trajectories and speeds of the upper clamping plate (11) and the lower clamping plate (12) during the stacking and pressing process from the predetermined movement patterns. The movement trajectory includes the positions of the upper clamping plate (11) and the lower clamping plate (12) on the guide posts and the corresponding moments. Calculate the position deviation between the positions of the upper clamping plate (11) and the lower clamping plate (12) at any moment in the motor monitoring time zone and their preset positions to obtain the position deviation value. Perform a weighted process on all the position deviation values in the motor operation time zone to obtain the position deviation influence value. The fault diagnosis module receives the monitoring and analysis result, compares the monitoring and analysis result with the set threshold, generates a signaling and executes an operation. The data storage and display module receives and stores the monitoring and analysis result and displays it at the same time.

2. The silicon steel sheet stacking device for the transformer core according to claim 1, wherein the stacking and pressing assembly includes a motor box (6), the bottom surface of the motor box (6) is fixedly installed on one side of the top surface of the equipment box (4), the motor (7) is arranged inside the motor box (6), the upper end surface of the motor (7) is fixedly installed on the inner top surface of the equipment box (4), the output shaft of the motor (7) passes through the top surface of the equipment box (4) through a coupling and is connected to a driving gear (8), a driven gear (9) is cooperatively abutted on one side of the driving gear (8), the driven gear (9) is fixedly connected to the lower end side of the bidirectional threaded rod (10), and the bottom end of the bidirectional threaded rod (10) is rotatably connected to the top surface of the equipment box (4).

3. The silicon steel sheet stacking device for the transformer core according to claim 2, wherein the surface of the bidirectional threaded rod (10) is threadedly connected to the upper clamping plate (11) and the lower clamping plate (12) respectively, a base (13) is arranged directly below the lower clamping plate (12), the bottom surface of the base (13) is fixedly installed on the top surface of the equipment box (4), four guide posts are uniformly and vertically fixedly connected to the periphery of the top surface of the base (13), and the guide posts are slidably connected to the surfaces of the upper clamping plate (11) and the lower clamping plate (12).

4. The silicon steel sheet stacking device for the transformer core according to claim 1, characterized in that, The controller further includes a sensing and acquisition module; the sensing and acquisition module is used to collect the state information of the motor (7), the position information of the upper clamping plate (11) and the lower clamping plate (12), and the pressure information of the silicon steel sheets during the stacking and pressing process through a sensor group; the sensor group includes a current sensor, a voltage sensor, a temperature sensor, a vibration sensor, an infrared sensor, a position sensor and a pressure sensor; The current sensor and the voltage sensor are connected to the circuit of the motor (7), and a temperature sensor, a vibration sensor and an infrared sensor are installed on the outer shell of the motor (7); the current sensor, the voltage sensor, the vibration sensor and the temperature sensor are respectively used to collect the current, voltage, vibration frequency and surface temperature of the motor (7), and the infrared sensor is used to collect the surface infrared image of the motor (7); the position sensor is arranged on the guide post between the upper clamping plate (11) and the lower clamping plate (12) and is used to collect the position information of the upper clamping plate (11) and the lower clamping plate (12); a plurality of pressure sensors are arranged and uniformly arranged on the stacking table (14) and are used to monitor the pressure information of the silicon steel sheets during the stacking and pressing process.

5. The silicon steel sheet stacking device for the transformer core according to claim 1, wherein, Monitor and analyze the pressure information of the silicon steel sheets during the stacking and pressing process, and the specific analysis is as follows: Divide the silicon steel sheets into several stacking areas, assign stacking weights to the stacking areas; obtain the pressure value of any stacking area, and calculate the average pressure by calculating the average value of the pressure values of all stacking areas; Calculate the difference value by calculating the difference between the maximum and minimum pressure values in all stacking areas; Calculate the pressure difference value by calculating the difference between the pressure value of any stacking area and its preset pressure value; perform weighted summation processing on the pressure difference values of all stacking areas and the stacking weights corresponding to the stacking areas to obtain the stacking influence value; Obtain the stacking influence value at any acquisition moment in the motor monitoring time zone and calculate the variance to obtain the stacking fluctuation value; The pressure mean value, pressure difference value, superimposed pressure influence value, and superimposed pressure fluctuation value are weighted to obtain the pressure shadow value.

6. The silicon steel sheet stacking device for the mutual inductor core according to claim 1, wherein, Analyze the infrared image of the motor (7), specifically as follows: Obtain the infrared image of any side of the motor (7), magnify the infrared image to obtain a pixel grid image; identify the color value of any pixel grid in the pixel grid image; set a calorific value range group, including several calorific value ranges, and assign a calorific value weight e to each calorific value range; match the color value of the pixel grid with its calorific value range group, and mark the pixel grids in the same calorific value range as the same amplitude pixel grids; connect adjacent same amplitude pixel grids to obtain the same amplitude calorific value area; Calculate the area of the same amplitude calorific value area and mark it as the amplitude value, and cancel the marking of the same amplitude calorific value area whose amplitude value is less than the preset screening area threshold; Count the number of the same amplitude calorific value areas within the calorific value range and mark it as the same amplitude number; calculate the mean value of the color values of all pixel grids in the same amplitude calorific value area to obtain the amplitude mean value; Calculate the same amplitude heat shadow value by calculating the amplitude value, same amplitude number, and amplitude mean value of the same amplitude calorific value areas in the same calorific value range; perform weighted processing on the same amplitude heat shadow values in different calorific value ranges with their corresponding calorific value weights to obtain the heat shadow value; perform weighted processing on the heat shadow values of the infrared images of each side of the motor (7) to obtain the infrared heat shadow value.

7. The silicon steel sheet stacking device for the mutual inductor core according to claim 1, wherein, Receive the monitoring and analysis results, compare the monitoring and analysis results with the set threshold values, generate corresponding signaling, and execute corresponding operations, specifically as follows: Obtain the monitoring and analysis results including the motor state value, position deviation influence value, and pressure shadow value; If the motor state value is greater than its set abnormal threshold range, generate a motor overall state failure signaling; if the normal deviation value is within its set abnormal threshold range, generate a motor overall state abnormal signaling; if the normal deviation value is less than its set abnormal threshold range, it indicates that the motor is in a normal state and generate a motor normal signaling; if the position deviation influence value is greater than its set abnormal threshold range, it indicates that the upper clamping plate (11) and the lower clamping plate (12) deviate seriously from the preset position, and generate a serious deviation signaling; if the position deviation influence value is within its set abnormal threshold range, it indicates that the upper clamping plate (11) and the lower clamping plate (12) deviate slightly from the preset position, and generate a slight deviation signaling; if the position deviation influence value is less than its set abnormal threshold range, it indicates that the positions of the upper clamping plate (11) and the lower clamping plate (12) are in a normal state; if the pressure shadow value is not within its set normal threshold range, generate a silicon steel sheet superimposed pressure comprehensive abnormal signaling; Send all the signaling to the data storage and display module; the data storage and display module receives all the signaling and records the reception time for display.

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