CN115283808B - Hot-press welding equipment of touch interactive interface - Google Patents
Hot-press welding equipment of touch interactive interface Download PDFInfo
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- CN115283808B CN115283808B CN202210781188.2A CN202210781188A CN115283808B CN 115283808 B CN115283808 B CN 115283808B CN 202210781188 A CN202210781188 A CN 202210781188A CN 115283808 B CN115283808 B CN 115283808B
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- 238000003466 welding Methods 0.000 title claims abstract description 103
- 230000002452 interceptive effect Effects 0.000 title claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 19
- 230000008859 change Effects 0.000 claims description 12
- 238000013500 data storage Methods 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 8
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000009966 trimming Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 239000000112 cooling gas Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
- B23K20/023—Thermo-compression bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
- B29C66/91441—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses a hot-press welding device of a touch interactive interface, which comprises a hot-press welding power supply, a touch screen and a hot-press welding machine head, wherein the touch interactive interface comprises a parameter setting interface, a temperature limiting interface, an alarm interface and a real-time monitoring interface; the main circuit comprises an input rectifying and filtering circuit, a full-bridge inverter circuit, a transformer and a transformer output rectifying and filtering circuit; the control circuit comprises a controller, a PWM output interface, a temperature AD interface, other AD sampling interfaces, an input and output interface, a serial communication interface, an SPI interface and a data access chip, wherein a hot-press welding power supply sets welding related parameters through a touch interaction interface, and controls the duty ratio of PWM signals according to a thermocouple feedback temperature value on a hot-press welding machine head, so that the welding temperature is kept within a set temperature range.
Description
Technical Field
The invention relates to the technical field of hot press welding, in particular to hot press welding equipment of a touch interactive interface.
Background
In recent years, hot press welding has the advantages of shorter heating time, smaller thermal influence on peripheral devices, forming welding spots under pressure, being capable of realizing multi-point simultaneous welding, being easy to realize production automation and the like, and is widely applied to I-PEX of micro coaxial wires, FFC, FPC and PCB welding, ACF connection of LCD and TCP, welding of various coils, teflon wires, terminals and wires, heating riveting of plastic materials and the like.
An output current integral detection system for medium-frequency direct-current resistance welding is used for solving the problem that the existing detection system (CN 202010850602.1) mostly only has a single detection range and cannot be adjusted according to different measurement conditions, so that the measurement accuracy cannot meet the requirements. The existing hot-press welding power supply operation panel is composed of an LCD display screen, a status indicator lamp and keyboard buttons, a cursor is controlled to move to the corresponding button position through the keyboard buttons, and the status setting is changed through corresponding keys; the screen interface is selected by means of the keyboard buttons. The LCD screen is mainly responsible for displaying, and may require multiple key presses whenever a certain parameter value is modified, which is inefficient and cumbersome and complicated to operate.
Disclosure of Invention
The invention aims to provide a hot-press welding device for a touch interactive interface, which aims to solve the problems of complicated operation in the parameter setting and interface switching process of the conventional hot-press welding device, thereby providing the hot-press welding device convenient for operators to use.
The invention is realized at least by one of the following technical schemes.
A hot-press welding device of a touch interactive interface comprises a hot-press welding power supply, a hot-press welding machine head connected with the hot-press welding power supply and a touch screen;
the hot-press welding power supply is used for controlling the duty ratio of the output PWM signal to adjust the output current by sampling the temperature of the thermocouple on the hot-press welding machine head, so that the temperature of the hot-press welding machine head is stabilized in a set temperature range;
the touch screen display content comprises a parameter setting interface, a temperature limiting interface, an alarm interface and a real-time monitoring interface.
Further, the hot-press welding power supply comprises a main circuit and a control circuit;
the main circuit comprises an input rectifying and filtering circuit, a full-bridge inverter circuit, a transformer and a transformer output rectifying and filtering circuit;
the input rectifying and filtering circuit is an alternating-current 220V power grid voltage input rectifying and filtering circuit and is used for rectifying and filtering single-phase alternating current in a power grid to obtain a direct-current power supply and outputting the direct-current power supply to the full-bridge inverter circuit;
the full-bridge inverter circuit is connected to a PWM output interface of the control circuit, PWM signals drive the on and off of IGBT of the full-bridge inverter circuit, medium-high frequency alternating current is obtained through the control of the PWM signals, low-voltage high-current direct current or direct current pulse current is obtained through the transformer output rectification filter circuit after the voltage reduction of the transformer, and the hot press welder head is heated;
the control circuit comprises a controller, a PWM output interface, a temperature AD interface, other AD sampling interfaces, an input and output interface, a serial communication interface, an SPI interface and a data access chip;
the temperature AD interface is connected with the thermocouple and is used for sampling the thermoelectric voltage of the thermocouple, and the thermoelectric voltage signal is amplified by the resistance-capacitance filter and the operational amplifier and then is input to the temperature AD interface;
the other AD sampling interfaces comprise an overvoltage and undervoltage detection interface, an overheat detection interface, an overcurrent protection detection interface and a sensor detection interface; the alternating current 220V power grid voltage is subjected to voltage reduction and rectification by a transformer, and the direct current voltage is input to an undervoltage detection interface after resistor voltage division treatment;
temperature signals sampled by temperature sensors of the controller and the transformer are converted into electric signals and then input to the overheat detection interface;
the Hall current sensor at the primary side of the transformer detects an alternating current signal, and inputs the alternating current signal to the overcurrent protection detection interface through the rectification and voltage comparator; the thermocouple converts the temperature signal into a weak thermoelectric signal, and the signal is amplified by the resistance-capacitance filter and the operational amplifier and then is input to a sensor detection interface of the circuit;
the serial communication interface is connected with the touch screen and the upper computer to realize the communication between the controller and the touch screen and between the controller and the upper computer;
the SPI interface is connected with the data storage chip to realize reading of the data storage area, and is convenient for saving and extracting parameters.
Further, the control chip adopted by the controller is STM32F407VGT6.
Further, the controller calculates the deviation between the sampling temperature and the set temperature, and regulates the duty ratio of PWM according to the current deviation value, so that the actual temperature of the hot press welding head rises or is stabilized in the set temperature range.
Further, the touch screen comprises a parameter setting interface, a temperature limiting interface, an alarm interface and a real-time monitoring interface.
Further, the parameter setting interface is used for setting and displaying the temperature and time of each section in the welding process, and displaying the real-time temperature and the current welding times of each stage after each welding is completed.
Further, the temperature limiting interface is used for setting the temperature limiting of each section, setting the gain coefficient, displaying the real-time temperature of each stage after each welding is completed, and displaying the current welding times.
Further, the alarm interface is used for indicating the faults of the equipment in the welding process.
Further, the real-time monitoring interface is used for displaying and describing the welding temperature change process in a curve form, and displaying the real-time temperature of each stage after each welding is completed.
Further, the touch screen touch interaction interface mode includes:
a. when clicking a window switching element on the touch screen display, automatically switching to a corresponding window interface;
b. when clicking the RDY element of the touch screen display, entering a parameter modification mode, clicking a numerical element to be modified, and inputting a key value change parameter;
c. when the equipment has faults in the working process, the touch screen display is automatically switched to an alarm interface, and the bright red part is the first detected fault;
d. clicking to enter a real-time monitoring interface for real-time monitoring, and drawing a welding temperature real-time change curve;
e. when clicking an ION element of the touch screen display, cutting off welding current for adjusting welding pressure or trimming an electrode;
f. when the SGW element of the touch screen display is clicked, a continuous welding mode is entered, the starting switch is kept closed, and the equipment is continuously and circularly welded according to time setting.
Compared with the prior art, the invention has the following effects:
the hot-press welding equipment with the touch interaction interface is beneficial to a user to operate the equipment more simply, more accurately and more rapidly, a touch screen is used for replacing a traditional keyboard button and a state indicator lamp, various contents are displayed, parameters are conveniently set, real-time temperature of each stage is displayed, alarm indication is carried out, the welding state is monitored, and the welding temperature change process is depicted in a curve form.
And the welding temperature is detected in each welding process, information feedback is carried out on operators, a basis is provided for optimizing parameter setting, and higher welding quality is ensured. And the working state of the welding process is mastered by utilizing the temperature change curve, so that the welding reliability is improved.
Drawings
FIG. 1 is a schematic diagram of a hot press welding apparatus for a touch interactive interface according to an embodiment;
FIG. 2 is a general block diagram of a thermocompression bonding apparatus system of a touch interactive interface of an embodiment;
FIG. 3 is a schematic diagram of a parameter setting interface of a touch screen human-computer interaction interface according to an embodiment;
FIG. 4 is a schematic diagram of a temperature limiting interface of a touch screen human-computer interaction interface according to an embodiment;
FIG. 5 is a schematic diagram of an alarm interface of a touch screen human-machine interface of an embodiment;
FIG. 6 is a schematic diagram of a real-time monitoring interface of a touch screen human-machine interface according to an embodiment;
in the figure: a hot-press welding power supply 1, a touch screen 2 and a hot-press welding machine head 3.
Detailed Description
In order that those skilled in the art will better understand the present invention, the following description will be given in detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
A thermocompression bonding apparatus of a touch interactive interface as shown in fig. 1, comprising: a hot-press welding power supply 1, a touch screen 2 and a hot-press welding machine head 3. The thermocompression bonding machine head 3 is provided with a thermocouple. Specifically, the positive and negative electrodes of the hot-press welding power supply 1 are connected to the hot-press welding head, and current is output through the positive and negative electrodes. The hot-press welding power supply 1 controls the duty ratio of the output PWM signal to adjust the output current by sampling the temperature of the thermocouple on the hot-press welding machine head, so that the temperature of the hot-press welding machine head is stabilized within a certain set temperature range.
The hot-press welding power supply includes: a main circuit and a control circuit.
Specifically, the main circuit comprises an input rectifying and filtering circuit, a full-bridge inverter circuit, a transformer and a transformer output rectifying and filtering circuit;
specifically, the input rectifying and filtering circuit is an alternating current 220V power grid voltage input rectifying and filtering circuit, and is used for rectifying and filtering single-phase alternating current (220V) in the power grid to obtain a direct current power supply, and outputting the direct current power supply to the full-bridge inverter circuit.
Specifically, the full-bridge inverter circuit is connected to a PWM output interface of the control circuit, PWM signals drive the on and off of IGBT of the full-bridge inverter circuit, the full-bridge inverter circuit is a full-bridge inverter circuit, medium-high frequency alternating current is obtained through control of PWM signals, after voltage reduction of a transformer, low-voltage high-current direct current or direct current pulse current is obtained through the transformer output rectifying and filtering circuit, and therefore the hot welding machine head is heated.
Specifically, the control circuit comprises a controller, a PWM output interface, a temperature AD interface, other AD sampling interfaces, an input and output interface, a serial communication interface, an SPI interface, a data storage chip AT25512 and the like.
The chip adopted by the controller is STM32F407VGT6.
The PWM output interface is connected with the full-bridge inverter circuit and used for controlling the full-bridge inverter circuit.
The control circuit utilizes the PWM generation function of the chip and generates PWM signals in a software control mode, and the PWM signals drive the on and off of the IGBT of the full-bridge inverter circuit through level amplification. The control circuit controls the pulse width of the PWM signal so as to change the current, and meanwhile, the pulse width of the PWM signal is provided with width limitation, and when the heating is needed, the pulse width of the PWM signal is increased to the maximum value of the pulse width; when a cool down is required, the pulse width of the PWM signal is reduced until zero.
The temperature AD interface is connected with the thermocouple and is used for sampling the thermoelectric voltage of the thermocouple, and the thermoelectric voltage signal is input to the temperature AD interface after being amplified by a resistance-capacitance filter and an operational amplifier of the control circuit;
the other AD sampling interfaces are connected with an output end, a thermocouple and a Hall current sensor of the alternating current 220V power grid voltage input after voltage reduction and rectification of the transformer, and are used for overvoltage and undervoltage detection, overheat detection, overcurrent protection detection and sensor detection.
The other AD sampling interfaces comprise an overvoltage and undervoltage detection interface, an overheat detection interface, an overcurrent protection detection interface and a sensor detection interface. The alternating current 220V power grid voltage is input into a direct current voltage which is subjected to voltage reduction and rectification by a transformer, and is input into an undervoltage detection interface after resistor voltage division treatment; temperature signals sampled by temperature sensors of the controller and the transformer are converted into electric signals, and the electric signals are input to an overheat detection interface; the Hall current sensor at the primary side of the transformer detects an alternating current signal, and inputs the alternating current signal to the overcurrent protection detection interface through the rectification and voltage comparator; the thermocouple converts the temperature signal into a weak thermoelectric signal, and the signal is amplified by the resistance-capacitance filter and the operational amplifier and then is input to the sensor detection interface;
the serial communication interface is connected with the touch screen and the upper computer, so that the communication between the controller and the touch screen and between the controller and the upper computer is realized.
The SPI interface is connected with the data storage chip, so that a data storage area is read, parameters are convenient to store and extract, and the data storage chip is an AT25512 chip.
The control process of the control circuit specifically comprises the following steps: the temperature sampling interface is used for sampling the temperature of a thermocouple on the hot-press welding machine head in real time, the thermocouple converts a temperature signal into a weak thermoelectric potential signal, the signal is input into the temperature AD interface after being amplified by a resistance-capacitance filter and an operational amplifier of the control circuit, and an analog signal is converted into a digital signal through a 12-bit AD conversion module of the chip, so that the conversion of the temperature signal and an electric signal is realized, and the acquisition and the processing of data are completed. The controller in the control circuit calculates the deviation between the sampling temperature and the set temperature, and decides whether the PWM duty ratio needs to be regulated or not according to the current deviation value, so that the actual temperature of the hot press welder head rises or is stabilized in the set temperature range.
In the embodiment, the direct current voltage of alternating current 220V power grid voltage is input after voltage reduction and rectification by a transformer, is input to an overvoltage/undervoltage detection interface after resistance voltage division treatment, and if the direct current voltage is larger than an overvoltage set value, the control circuit alarms that the power grid voltage is too high, and if the direct current voltage is smaller than an undervoltage set value, the control circuit alarms that the power grid voltage is too low;
the temperature signals sampled by the temperature sensors of the controller and the transformer are converted into electric signals, the electric signals are input to the overheat detection interface, if the temperature of the controller is higher than a set value of the highest temperature of the controller, the control circuit alarms that the temperature of the controller is too high, and if the temperature of the transformer is higher than the set value of the highest temperature of the transformer, the control circuit alarms that the temperature of the transformer is too high;
the Hall current sensor on the primary side of the transformer detects the current at any time, converts a current signal into an electric signal, inputs the electric signal into the overcurrent protection detection interface, and controls the circuit to alarm out of control if the current on the primary side of the transformer is larger than a maximum current set value;
the sensor is a sensor for detecting a thermocouple, the thermocouple converts a temperature signal into a weak thermoelectric signal, the signal is amplified by a resistance-capacitance filter and an operational amplifier and then is input to a sensor detection interface, a control circuit carries out sensor self-detection in a startup initialization stage, the electric signal of the thermocouple is sampled, and if the thermocouple is reversely connected, the sampled electric signal is negative, and the control circuit alarms the sensor for errors.
Preferably, the thermocompression bonding device of the touch interaction interface includes a touch screen connected to a thermocompression bonding power source through a screw, as shown in fig. 1.
The parameter setting interface is used for setting the temperature and time of each section in the welding process, displaying the real-time temperature of each stage after each welding is finished, and displaying the current welding times;
the temperature limiting interface is used for setting the temperature limiting of each section, setting a gain coefficient, displaying the real-time temperature of each stage after each welding is finished, and displaying the current welding times;
the alarm interface is used for indicating faults of the equipment in the welding process;
and the real-time monitoring interface is used for describing the welding temperature change process in a curve form and displaying the real-time temperature of each stage after each welding is completed.
The touch interaction interface mode comprises the following steps:
a. when clicking a window switching element above the touch screen display, automatically switching to a corresponding window interface, for example: clicking the temperature limit to switch to a temperature limit interface;
b. when clicking the RDY element at the lower left of the touch screen display, entering a parameter modification mode, clicking a numerical element to be modified, and inputting a key value change parameter;
c. when the equipment has faults in the working process, the touch screen display is automatically switched to an alarm interface, and the bright red part is the first detected fault;
d. clicking to enter a real-time monitoring interface for real-time monitoring, and drawing a welding temperature real-time change curve;
e. when clicking the ION element at the left lower part of the touch screen display, cutting off welding current for adjusting welding pressure or trimming an electrode;
f. when the SGW element at the lower left of the touch screen display is clicked, a continuous welding mode is entered, the starting switch is kept closed, and the equipment is continuously and circularly welded according to time setting.
As shown in the parameter setting interface schematic diagram in fig. 3, t1 is a pre-pressing time, t2 is a first-stage heating maintaining time, t3 is a temperature ramp-up time, t4 is a second-stage heating maintaining time, t5 is a temperature ramp-down time, and t6 is a rest time; t1 is the first section heating temperature, T2 is the second section heating temperature, and T3 is the slow cooling temperature; GP is the welding parameter set number.
As shown in the temperature limiting interface schematic diagram in FIG. 4, the temperature of the first section of Tl1 is limited at the upper end, the temperature of the first section of Tl1 is limited at the lower end, the temperature of the second section of Tl2 is limited at the upper end, the temperature of the second section of Tl2 is limited at the lower end, the temperature of the second section of Tl3 is limited at the upper end, and the temperature of the second section of Tl3 is limited at the lower end. When the actual heating temperature of each section is higher than the corresponding set upper limit, the alarm temperature is too high; when the actual temperature of each section of heating is lower than the corresponding set lower limit, the alarm temperature is too low. gain1 and gain2 are gain parameters of the welding process.
Referring to fig. 3 and 4, specifically, D1 is the real-time temperature of the first segment after the welding is completed, D2 is the real-time temperature of the second segment after the welding is completed, D3 is the slow-down real-time temperature, and count is the current number of times of welding. Clicking the RDY element at the lower left of the touch screen display to enter a parameter modification mode; when clicking the ION element at the lower left of the touch screen display, cutting off welding current; when the SGW element at the lower left of the touch screen display is clicked, a continuous welding mode is entered.
As shown in the schematic diagram of the alarm interface shown in fig. 5, specifically, the alarm interface is used for indicating a fault occurring in the operation process of the device, if the fault occurs (such as out-of-control current, too high temperature, too low temperature, too high power grid voltage, too low power grid voltage, overheat of a controller, overheat of a transformer, and failure of a temperature sensor), the power supply stops outputting current, automatically enters the alarm interface and is bright red, the bright red is the first detected fault, and the long-press bright red can reset the fault.
As shown in the schematic diagram of the real-time monitoring interface in fig. 6, the real-time monitoring interface is specifically configured to draw a temperature change curve during each welding process, and display the real-time temperature of each stage.
Example 2
The input interface of the control circuit of the embodiment is provided with a start button, and the hot-press welding equipment starts welding work after the start button is pressed; the input interface of the control circuit is provided with a reset button, and when a fault alarm occurs, the reset button can be pressed down to restart and empty the operation data under the condition of no power failure. The input interface is also connected with other input buttons, such as a cooling gas start button, and the cooling gas is introduced to enable the temperature of the thermocompression bonding machine head to drop faster by pressing the cooling gas start button; the relay is connected to an output interface, such as a welding start relay and a vent cooling gas relay.
Example 3
The controller, the touch screen and the upper computer in the embodiment are in communication based on MODBUS protocol, the chip of the controller is STM32F407VGT6, the master station is the controller, and the slave stations are the touch screen and the upper computer. The protocol defines a message structure that the controller is able to recognize and use. The data communication adopts a master station-slave station mode, the master station sends out data request information, and the slave station can send data to the master station to respond to the request after receiving the correct message; the master station can also directly send messages to modify the data of the slave station, so that bidirectional reading and writing are realized.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (5)
1. The hot-press welding equipment of the touch interactive interface is characterized by comprising a hot-press welding power supply, a hot-press welding machine head connected with the hot-press welding power supply and a touch screen;
the hot-press welding power supply is used for controlling the duty ratio of the output PWM signal to adjust the output current by sampling the temperature of the thermocouple on the hot-press welding machine head, so that the temperature of the hot-press welding machine head is stabilized in a set temperature range;
the touch screen display content comprises a setting parameter interface, a temperature limiting interface, an alarm interface and a real-time monitoring interface; the temperature limiting interface is used for setting temperature limiting of each section, setting gain coefficients, displaying real-time temperature of each stage after each welding is finished, and displaying current welding times;
the hot-press welding power supply comprises a main circuit and a control circuit;
the main circuit comprises an input rectifying and filtering circuit, a full-bridge inverter circuit, a transformer and a transformer output rectifying and filtering circuit;
the input rectifying and filtering circuit is an alternating-current 220V power grid voltage input rectifying and filtering circuit and is used for rectifying and filtering single-phase alternating current in a power grid to obtain a direct-current power supply and outputting the direct-current power supply to the full-bridge inverter circuit;
the full-bridge inverter circuit is connected to a PWM output interface of the control circuit, PWM signals drive the on and off of IGBT of the full-bridge inverter circuit, medium-high frequency alternating current is obtained through the control of the PWM signals, low-voltage high-current direct current or direct current pulse current is obtained through the transformer output rectification filter circuit after the voltage reduction of the transformer, and the hot press welder head is heated;
the control circuit comprises a controller, a PWM output interface, a temperature AD interface, other AD sampling interfaces, an input and output interface, a serial communication interface, an SPI interface and a data access chip;
the temperature AD interface is connected with the thermocouple and is used for sampling the thermoelectric voltage of the thermocouple, and the thermoelectric voltage signal is amplified by the resistance-capacitance filter and the operational amplifier and then is input to the temperature AD interface;
the other AD sampling interfaces comprise an overvoltage and undervoltage detection interface, an overheat detection interface, an overcurrent protection detection interface and a sensor detection interface; the alternating current 220V power grid voltage is subjected to voltage reduction and rectification by a transformer, and the direct current voltage is input to an undervoltage detection interface after resistor voltage division treatment;
temperature signals sampled by temperature sensors of the controller and the transformer are converted into electric signals and then input to the overheat detection interface;
the Hall current sensor at the primary side of the transformer detects an alternating current signal, and inputs the alternating current signal to the overcurrent protection detection interface through the rectification and voltage comparator; the thermocouple converts the temperature signal into a weak thermoelectric signal, and the signal is amplified by the resistance-capacitance filter and the operational amplifier and then is input to a sensor detection interface of the circuit;
the serial communication interface is connected with the touch screen and the upper computer to realize the communication between the controller and the touch screen and between the controller and the upper computer;
the SPI interface is connected with the data storage chip to realize reading of a data storage area, so that parameters can be stored and extracted conveniently;
the controller calculates the deviation between the sampling temperature and the set temperature, and regulates the duty ratio of PWM according to the current deviation value, so that the actual temperature of the hot press welder head rises or is stabilized in the set temperature range.
2. The thermocompression bonding apparatus of claim 1, wherein the control chip is STM32F407VGT6.
3. The apparatus of claim 1, wherein the parameter setting interface is configured to set and display a temperature and a time of each stage in the welding process, and to display a real-time temperature and a current number of times of welding at each stage after each welding is completed.
4. The thermocompression bonding apparatus of claim 1, wherein the alarm interface is configured to indicate a failure of the apparatus during the bonding process.
5. The thermocompression bonding apparatus of a touch interactive interface according to any one of claims 1 to 4, wherein the touch screen touch interactive interface mode includes:
a. when clicking a window switching element on the touch screen display, automatically switching to a corresponding window interface;
b. when clicking the RDY element of the touch screen display, entering a parameter modification mode, clicking a numerical element to be modified, and inputting a key value change parameter;
c. when the equipment has faults in the working process, the touch screen display is automatically switched to an alarm interface, and the bright red part is the first detected fault;
d. clicking to enter a real-time monitoring interface for real-time monitoring, and drawing a welding temperature real-time change curve;
e. when clicking an ION element of the touch screen display, cutting off welding current for adjusting welding pressure or trimming an electrode;
f. when the SGW element of the touch screen display is clicked, a continuous welding mode is entered, the starting switch is kept closed, and the equipment is continuously and circularly welded according to time setting.
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