CN208556299U

CN208556299U - A kind of thermocompression bonding pressure monitor

Info

Publication number: CN208556299U
Application number: CN201820958773.4U
Authority: CN
Inventors: 陈驰; 王中军
Original assignee: Jiangsu Electronic Technology Co Ltd Innocent
Current assignee: Jiangsu Electronic Technology Co Ltd Innocent
Priority date: 2018-06-21
Filing date: 2018-06-21
Publication date: 2019-03-01
Anticipated expiration: 2028-06-21

Abstract

The utility model discloses a kind of thermocompression bonding pressure monitor, including pressure monitor ontology；The pressure monitor ontology includes that welding pressure receives circuit, welding pressure processing circuit, welding pressure display circuit, key group circuit, power circuit and imput output circuit.The utility model realizes welding pressure real-time detection during thermal compression welding by the pressure sensor on connection hot welding press, and welding pressure size is intuitively shown to user by LED charactrons LED1；When welding pressure reaches the upper pressure limit value or low pressure limit value of setting, corresponding upper pressure limit indicator light LED2 or low pressure limit indicator light LED3 is lighted, thermocompression bonding pressure monitor outputs signal to welding controller, welding controller drives pressing mechanism movement, welding pressure is adapted to normal range (NR), it is accurate to keep the constant of welding pressure, it is ensured that the consistency of welding pressure, welding quality is improved, product defect rate is effectively reduced.

Description

A kind of thermocompression bonding pressure monitor

Technical field

The utility model relates to thermal compression welding technical field more particularly to a kind of thermocompression bonding pressure monitors.

Background technique

Thermal compression welding (abbreviation thermocompression bonding) technique refers to using on thermocompression bonding electric power outputting current to Special welding head, to produce Green coke is had burning ears, and after soldering tip reaches the temperature of setting, is come into full contact with soldering tip with workpiece position to be welded by applying pressure, is conducted Heat melts workpiece tin layers, and then, pressure maintaining fast cooling, tin layers solidification connection is finally completed welding.Soldering tip in welding process The pressure welding quality influence applied on workpiece is very big, and pressure is excessive to will lead to workpiece deformation damage, and pressure is too small to be will lead to It conducts heat bad and generates rosin joint.But current hot welding press, when carrying out thermal compression welding, staff can not in real time, directly Sight, the size for accurately recognizing welding pressure (pressure that soldering tip applies workpiece), are still rule of thumb, according to be welded The size that the types of mechanical formula control pressing mechanism of workpiece carrys out regulating welding pressure passes through change soldering tip and moves down length adjustment weldering Pressure is connect, this mode is not only high to the technical requirements of staff, complicated for operation, low efficiency, moreover, because the size of workpiece The wear and aging of mechanical part, frequently can lead to actual welding pressure and changes, at this time after position deviation, and long-time service The not noticeable slight change to welding pressure of staff, it will lead to the unstable of workpiece welding quality.

Utility model content

The purpose of this utility model is that being mentioned by a kind of thermocompression bonding pressure monitor to solve background section above To the problem of.

For this purpose, the utility model uses following technical scheme:

A kind of thermocompression bonding pressure monitor comprising pressure monitor ontology；The pressure monitor ontology includes welding It is defeated that pressure receives circuit, welding pressure processing circuit, welding pressure display circuit, key group circuit, power circuit and input Circuit out；The input terminal that the welding pressure receives circuit is connect with the pressure sensor being set on hot welding press, output end It is connect with welding pressure processing circuit；The welding pressure processing circuit and welding pressure display circuit, power circuit, input are defeated Circuit connection, key group circuit connection out；Wherein, it includes sensor interface connector CN5, filter that the welding pressure, which receives circuit, Wave circuit, analog to digital conversion circuit, reference voltage circuit, the filter circuit include resistance R3, resistance R18, resistance R15, resistance R16, capacitor C4, capacitor C5, analog-digital conversion circuit as described include ADC chip U2, and the reference voltage circuit includes three-terminal voltage-stabilizing Device U5, resistance R12, resistance R13, resistance R9, capacitor C3；A termination simulation ground AGND of the resistance R3, the other end and resistance One end of R16, sensor interface connector CN5 SIG+ pin, the other end of resistance R16 and one end, the ADC chip of capacitor C4 The AIN+ pin of U2 connects, a termination reference voltage terminal of another termination simulation ground AGND, the resistance R18 of capacitor C4 VREF, one end of another SIG- pin for terminating sensor interface connector CN5, resistance R15, the other end and electricity of resistance R15 Hold one end of C5, the AIN- pin connection of ADC chip U2, another termination simulation ground AGND of capacitor C5, the three terminal regulator The anode of U5 is connect with one end of simulation ground AGND, one end of resistance R9, capacitor C3, the other end and three terminal regulator of resistance R9 One end connection of the reference pole of U5, resistance R12, the other end of capacitor C3, the other end of resistance R12, three terminal regulator U5 yin Pole, resistance R13 one end connect reference voltage terminal VREF；The welding pressure display circuit includes LED charactrons LED1, display Plate interface CN4, driving circuit U4, inductance L3, resistance R5, resistance R6, resistance R7, capacitor C8, capacitor C9, capacitor C10, capacitor A termination display board interface CN4's of C11, capacitor C6, the LED charactrons LED1 connection driving circuit U4, the inductance L3 Power pins, the other end and one end of capacitor C11, one end of capacitor C6, the VDD pin of driving circuit U4, resistance R5 one end, One end connection of one end of resistance R6, resistance R7, the other end of capacitor C11, the other end of capacitor C6, driving circuit U4 GND The other end of pin ground connection, resistance R5 is connect with the DIO pin of one end of capacitor C8, display plate interface CN4, and resistance R6's is another End and one end of capacitor C9 show that the CLK pin of plate interface CN4 connect, and one end of the other end of resistance R7 and capacitor C10 are shown Show the STB pin connection of plate interface CN4, the other end ground connection of the other end of capacitor C8, the other end of capacitor C9, capacitor C10.

Particularly, the welding pressure processing circuit includes single-chip microcontroller U1, mcu programming interface CN1, communication interface CN6, display plate interface CN3；The single-chip microcontroller U1 connection ADC chip U2, the mcu programming interface CN1, communication interface CN6, display plate interface CN3 connection single-chip microcontroller U1.

Particularly, the welding pressure display circuit further includes indicator light circuit；The indicator light circuit includes in pressure Limit indicator light LED2, low pressure limit indicator light LED3, monitor state indicator light LED4, current-limiting resistance R19；The upper pressure limit refers to Show the cathode and the cathode of low pressure limit indicator light LED3, the cathode of monitor state indicator light LED4, current-limiting resistance R19 of lamp LED2 One end connection, the anode of upper pressure limit indicator light LED2, the anode of low pressure limit indicator light LED3, monitor state indicator light The anode of LED4, the other end of current-limiting resistance R19 connect driving circuit U4.

Particularly, the key group circuit includes increasing key PB1, reducing key PB2, setting button PB3, return to key PB4；The increase key PB1, reduction key PB2, setting button PB3, return key PB4 are connect with driving circuit U4.

Particularly, the increase key PB1, reduction key PB2, setting button PB3, return key PB4 are all made of and touch Key.

Particularly, the power circuit includes power connector CN2, line filter L1, fuse F1, zener diode ZD2, polarized capacitor C12, voltage stabilizing chip U3, capacitor C12, polarized capacitor C13, resistance R17, capacitor C7, inductance L2, capacitor C14, the power connector CN2 connect DC power supply, and the input terminal of the line filter L1 connects power connector CN2, defeated Outlet is separately connected the anode of one end of fuse F1, zener diode ZD2, the other end and zener diode of fuse F1 The IN pin connection of the cathode of ZD2, the anode of polarized capacitor C13, voltage stabilizing chip U3, the COM pin of voltage stabilizing chip U3 have pole Property the cathode of capacitor C13, the anode of zener diode ZD2, one end of resistance R17, polarized capacitor C12 cathode ground connection, have The anode of polar capacitor C12 is connect with one end of the OUT pin of voltage stabilizing chip U3, one end of capacitor C7, inductance L2, capacitor C7's The other end is connect with one end of the other end of resistance R17, capacitor C14 is followed by simulation ground AGND, the other end and inductance of capacitor C14 The other end connection of L2 is followed by feeder ear.

Particularly, the imput output circuit includes input circuit and output circuit；The input circuit include resistance R1, Resistance R2, capacitor C2, zener diode ZD1, the resistance R1 connect to power supply one end connection of device CN2, resistance R2, resistance R2 The other end connect with one end of capacitor C2, the cathode of zener diode ZD1, single-chip microcontroller U1, the other end of capacitor C2 and pressure stabilizing It is grounded after the anode connection of diode ZD1；The output circuit include the first output circuit and the second output circuit, described first Output circuit includes one end connection single-chip microcontroller U1 of resistance R4, resistance R10, NPN type triode Q1, the resistance R10, the other end It is connect with the base stage of one end of resistance R4, NPN type triode Q1, the collector of NPN type triode Q1 connects power connector The emitter of CN2, NPN type triode Q1 are grounded after connecting with the other end of resistance R4；Second output circuit includes resistance One end of one end connection single-chip microcontroller U1 of R8, resistance R11, NPN type triode Q2, the resistance R11, the other end and resistance R8, The base stage of NPN type triode Q1 connects, and the collector of NPN type triode Q2 connects power connector CN2, NPN type triode Q2 Emitter connect with the other end of resistance R8 after be grounded.

The utility model proposes thermocompression bonding pressure monitor by connection hot welding press on pressure sensor, realize pair Hot welding press welding pressure real-time detection during thermal compression welding, and it is by LED charactrons LED1 that welding pressure size is straight That sees is shown to user；When welding pressure reaches the upper pressure limit value or low pressure limit value of setting, corresponding upper pressure limit refers to Show that lamp LED2 or low pressure limit indicator light LED3 are lighted, thermocompression bonding pressure monitor outputs signal to the welding control of hot welding press Device, welding controller drive pressing mechanism movement, welding pressure are adapted to normal range (NR), the accurate perseverance for keeping welding pressure It is fixed, it is ensured that the consistency of welding pressure improves welding quality, effectively reduces product defect rate.The utility model is not only Pressure detecting accurate stable, detection operation are fast and reliable；Parameter automatically saves, and is not afraid of powered-off fault；Highlighted numeral method, letter It is single intuitive；And it is small in size, it is at low cost, there is DC10V-26V ultra-wide power supply adaptability, be suitable for promoting and applying.

Detailed description of the invention

Fig. 1 is thermocompression bonding pressure monitor structural schematic diagram provided by the embodiment of the utility model；

Fig. 2A and Fig. 2 B is that welding pressure receives circuit in thermocompression bonding pressure monitor provided by the embodiment of the utility model Structure chart；

Fig. 3 A, Fig. 3 B, Fig. 3 C, Fig. 3 D are welding pressure in thermocompression bonding pressure monitor provided by the embodiment of the utility model Processing circuit structure chart；

Fig. 4 A, Fig. 4 B, Fig. 4 C, Fig. 4 D are welding pressure in thermocompression bonding pressure monitor provided by the embodiment of the utility model Display circuit structure chart；

Fig. 5 is key group circuit structure diagram in thermocompression bonding pressure monitor provided by the embodiment of the utility model；

Fig. 6 A and Fig. 6 B are the structure chart of power circuit in thermocompression bonding pressure monitor provided by the embodiment of the utility model；

Fig. 7 A is input circuit structure chart in thermocompression bonding pressure monitor provided by the embodiment of the utility model；

Fig. 7 B-1 and Fig. 7 B-2 are the first output circuit in thermocompression bonding pressure monitor provided by the embodiment of the utility model With the structure chart of the second output circuit.

Specific embodiment

The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model, It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms in fact It is existing, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes public affairs to the utility model Open the more thorough and comprehensive of content understanding.It should be noted that it can when an element is considered as " connection " another element To be directly to another element or may be simultaneously present centering elements.Unless otherwise defined, institute used herein Some technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs.Herein In term used in the description of the utility model be only for the purpose of describing specific embodiments and be not intended to Limit the utility model.Term " and or " used herein include the arbitrary of one or more relevant listed items and All combinations.

It please refers to shown in Fig. 1, Fig. 1 is thermocompression bonding pressure monitor structural schematic diagram provided by the embodiment of the utility model.

Thermocompression bonding pressure monitor 100 includes pressure monitor ontology in the present embodiment.The pressure monitor ontology tool Body includes that welding pressure receives circuit 101, welding pressure processing circuit 102, welding pressure display circuit 103, key group circuit 104, power circuit 105 and imput output circuit 106.The welding pressure receives the input terminal of circuit 101 and is set to heat Pressure sensor connection on press welder, output end are connect with welding pressure processing circuit 102；The welding pressure processing circuit 102 connect with welding pressure display circuit 103, power circuit 105, imput output circuit 106, key group circuit 104 connects.

Specifically, as shown in Figure 2 A and 2 B, it includes sensor that the welding pressure, which receives circuit 101, in the present embodiment Interface connector CN5, filter circuit, analog to digital conversion circuit, reference voltage circuit.The filter circuit includes resistance R3, resistance R18, resistance R15, resistance R16, capacitor C4, capacitor C5, analog-digital conversion circuit as described include ADC chip U2, the reference voltage Circuit includes three terminal regulator U5, resistance R12, resistance R13, resistance R9, capacitor C3；A termination simulation ground of the resistance R3 AGND, the other end and one end of resistance R16, the SIG+ pin of sensor interface connector CN5, the other end and electricity of resistance R16 Hold the AIN+ pin connection of one end of C4, ADC chip U2, another termination simulation ground AGND of capacitor C4, the one of the resistance R18 Terminate reference voltage terminal VREF, one end of another SIG- pin for terminating sensor interface connector CN5, resistance R15, resistance The other end of R15 is connect with the AIN- pin of one end of capacitor C5, ADC chip U2, another termination simulation ground AGND of capacitor C5, The anode of the three terminal regulator U5 is connect with one end of simulation ground AGND, one end of resistance R9, capacitor C3, and resistance R9's is another End is connect with one end of the reference pole of three terminal regulator U5, resistance R12, the other end of capacitor C3, the other end of resistance R12, three One end of the cathode, resistance R13 of holding voltage-stablizer U5 connects reference voltage terminal VREF.

As shown in Fig. 3 A, Fig. 3 B, Fig. 3 C, Fig. 3 D, the welding pressure processing circuit 102 includes monolithic in the present embodiment Machine U1, mcu programming interface CN1, communication interface CN6, display plate interface CN3.The single-chip microcontroller U1 connection ADC chip U2, institute State mcu programming interface CN1, communication interface CN6, display plate interface CN3 connection single-chip microcontroller U1.

As shown in Fig. 4 A, Fig. 4 B, Fig. 4 C, the welding pressure display circuit 103 includes LED charactrons in the present embodiment LED1, display plate interface CN4, driving circuit U4, inductance L3, resistance R5, resistance R6, resistance R7, capacitor C8, capacitor C9, capacitor C10, capacitor C11, capacitor C6, the LED charactrons LED1 connection driving circuit U4, the inductance L3 one termination display board connect The power pins of mouth CN4, the other end and one end of capacitor C11, one end of capacitor C6, the VDD pin of driving circuit U4, resistance R5 One end, one end of resistance R6, resistance R7 one end connection, the other end of capacitor C11, the other end of capacitor C6, driving circuit The GND pin of U4 is grounded, and the other end of resistance R5 is connect with the DIO pin of one end of capacitor C8, display plate interface CN4, resistance The other end of R6 is connect with the CLK pin of one end of capacitor C9, display plate interface CN4, and the other end of resistance R7 is with capacitor C10's One end, show plate interface CN4 STB pin connection, the other end of capacitor C8, the other end of capacitor C9, capacitor C10 the other end Ground connection.As shown in Figure 4 D, the welding pressure display circuit 103 further includes indicator light circuit in the present embodiment；The instruction Circuit for lamp includes upper pressure limit indicator light LED2, low pressure limit indicator light LED3, monitor state indicator light LED4, current-limiting resistance R19；The cathode of the upper pressure limit indicator light LED2 and cathode, the monitor state indicator light LED4 of low pressure limit indicator light LED3 Cathode, current-limiting resistance R19 one end connection, the anode of upper pressure limit indicator light LED2, low pressure limit indicator light LED3 The other end connection driving circuit U4 of anode, the anode of monitor state indicator light LED4, current-limiting resistance R19.

As shown in figure 5, the key group circuit 104 includes increasing key PB1, reducing key PB2, set in the present embodiment It sets key PB3, return to key PB4；The increase key PB1, key PB2, setting button PB3 are reduced, key PB4 is returned and drives Dynamic circuit U 4 connects.In specific application, the increase key PB1, reduction key PB2, setting button PB3, return key PB4 It is all made of touch key, preferably B3F-1050 touch key.

As shown in Figure 6 A and 6 B, the power circuit 105 includes power connector CN2, route filter in the present embodiment Wave device L1, fuse F1, zener diode ZD2, polarized capacitor C12, voltage stabilizing chip U3, capacitor C12, polarized capacitor C13, Resistance R17, capacitor C7, inductance L2, capacitor C14, the power connector CN2 connect DC power supply, the line filter L1's Input terminal connects power connector CN2, and output end is separately connected the anode of one end of fuse F1, zener diode ZD2, fuses The other end of device F1 is connect with the IN pin of the cathode of zener diode ZD2, the anode of polarized capacitor C13, voltage stabilizing chip U3, The COM pin of voltage stabilizing chip U3, the cathode of polarized capacitor C13, the anode of zener diode ZD2, resistance R17 one end, have The cathode of polar capacitor C12 is grounded, the OUT pin of the anode of polarized capacitor C12 and voltage stabilizing chip U3, capacitor C7 one end, One end of inductance L2 connects, and the other end of capacitor C7 is connect with one end of the other end of resistance R17, capacitor C14 is followed by simulation ground The other end of AGND, capacitor C14 are connect with the other end of inductance L2 is followed by feeder ear.The fuse F1 is adopted in the present embodiment Insured with self- recoverage.The power circuit 105 has DC10V-26V ultra-wide power supply adaptability, versatility in the present embodiment It by force, is suitable for promoting and applying.

The imput output circuit 106 includes input circuit and output circuit in the present embodiment.As shown in Figure 7 A, at this Input circuit described in embodiment includes that resistance R1, resistance R2, capacitor C2, zener diode ZD1, the resistance R1 and power supply connect Connect one end connection of device CN2, resistance R2, the other end and one end of capacitor C2, the cathode of zener diode ZD1, list of resistance R2 The U1 connection of piece machine, the other end of capacitor C2 are grounded after connecting with the anode of zener diode ZD1.The output in the present embodiment Circuit includes the first output circuit and the second output circuit, and as shown in Fig. 7 B-1, first output circuit includes resistance R4, electricity Hinder R10, one end of NPN type triode Q1, the resistance R10 connect single-chip microcontroller U1, one end, the NPN type of the other end and resistance R4 The base stage of triode Q1 connects, and the collector of NPN type triode Q1 connects power connector CN2, the transmitting of NPN type triode Q1 Pole is grounded after connecting with the other end of resistance R4.As shown in Fig. 7 B-2, second output circuit include resistance R8, resistance R11, One end of NPN type triode Q2, the resistance R11 connect single-chip microcontroller U1, one end, the NPN type triode of the other end and resistance R8 The base stage of Q1 connects, and the collector of NPN type triode Q2 connects power connector CN2, the emitter and electricity of NPN type triode Q2 It is grounded after the other end connection of resistance R8.

In above embodiments, the PIC18F14K50ISS type single-chip microcontroller of the preferred MICROCHIP company of single-chip microcontroller U1； The CS1237 type ADC chip of the preferred core sea science and technology of ADC chip U2；The Z7805-500 type of the preferred Guangzhou crowd will of voltage stabilizing chip U3 DCDC module；The TM1620B type LED drive circuit of the preferred martial prowess of driving circuit U4；The preferred Onsen of three terminal regulator U5 TL431A voltage-stablizer；The preferred HX25403-5A type mcu programming interface of mcu programming interface CN1；Power connector CN2 is excellent Select VH-3.96-5A type connector；Show the preferred 2510-5A type connector of plate interface CN3；Show the preferred 2510- of plate interface CN4 5A type connector；The preferred HX25403-5A type connector of sensor interface connector CN5；The preferred 2510-4A type of communication interface CN6 Connector；The SJD100-1 filter of the preferred Shanghai competition rules of linear filter L1；The preferred CL3641A of LED charactrons LED1 Type LED charactrons；The preferred red LED indicator light of the upper pressure limit indicator light LED2, low pressure limit indicator light LED3, monitoring The preferred green LED indicator lamp of status indicator lamp LED4.

In conjunction with above-mentioned attached drawing, explain the main points briefly to the working principle of thermocompression bonding pressure monitor 100 in the present embodiment as follows: work When making, first by increasing key PB1, reducing key PB2, setting button PB3, the pressure for returning to key PB4 setting welding pressure Power upper limit value and low pressure limit value.The sensor interface connector CN5 reception that welding pressure receives circuit 101 is set to thermocompression bonding The pressure signal of pressure sensor senses on machine, ADC chip is given in output after filter circuit is filtered pressure signal The pressure signal of simulation is converted to digital signal (pressure data) afterwards by its 5 foot and 6 by 3 feet and 4 feet of U2, ADC chip U2 Human hair combing waste gives 8 feet and 9 feet of single-chip microcontroller U1 in welding pressure processing circuit 102；The 3 foot outputting reference voltages of three terminal regulator U5 2 feet of pressure sensor interface connector CN5 are connected to, bias voltage are provided to the external pressure sensor, in this reality Apply the preferred strain resistor bridge pressure sensor of pressure sensor described in example.Single-chip microcontroller U1 to the pressure data received at Reason, by showing that plate interface CN3 is exported to welding pressure display circuit 103；Welding pressure display circuit 103 passes through LED number Pipe LED1 shows the pressure data size received；Reach the upper pressure limit value or low pressure limit of setting in the pressure data detected When value, corresponding upper pressure limit indicator light LED2 or low pressure limit indicator light LED3 are lighted, and single-chip microcontroller U1 outputs signal to hot pressing The welding controller of welding machine, welding controller drive pressing mechanism movement, welding pressure are adapted to normal range (NR), detailed process As follows: when low pressure limit value of the welding pressure lower than setting, single-chip microcontroller U1 bottoming outputs signal to the first output circuit, First output circuit sends the standard signal that lower limit output signal is converted into 24V on 3 feet and 4 feet of power connector CN2, electricity Lower limit output signal is sent to welding controller by source connector CN2, and welding controller driving pressing mechanism, which moves down, presses welding Power gradually increases, and when welding pressure is pressurized to the low pressure limit value higher than setting, lower limit output signal is disconnected, welding controller It controls pressing mechanism and stops movement；Likewise, single-chip microcontroller U1 exports the upper limit when welding pressure is higher than the upper pressure limit value of setting The second output circuit is outputed signal to, the standard signal that upper limit output signal is converted into 24V is sent electricity by the second output circuit Upper limit output signal is sent to welding controller, welding controller by 3 feet and 4 feet of source connector CN2, power connector CN2 Driving pressing mechanism, which moves up, reduces welding pressure, when welding pressure is lower than upper pressure limit value, the stable upper pressure limit in setting When between value and low pressure limit value, welding controller controls pressing mechanism and stops movement.When work, power supply in power circuit 105 1 foot of connector CN2 and 2 feet access 24V DC power supply, are depressured to 5V direct current by voltage stabilizing chip U3,5V direct current is mentioned Supply each circuit in thermocompression bonding pressure monitor 100.It will be from the spare of the 5th foot of power connector CN2 by input circuit The level that input signal is converted into 5V gives single-chip microcontroller U1, wherein the effect of spare input signal is to weld under special circumstances Synchronization signal is connect, judgement of transfiniting just is carried out when to weld, is controlled when not welding without welding pressure.

The technical solution of the utility model is realized to hot welding press by the pressure sensor on connection hot welding press in heat Welding pressure real-time detection in pressure welding termination process, and welding pressure size is intuitively shown to by use by LED charactrons LED1 Family；When welding pressure reaches the upper pressure limit value or low pressure limit value of setting, corresponding upper pressure limit indicator light LED2 or pressure Power lower limit indicator light LED3 is lighted, and thermocompression bonding pressure monitor 100 outputs signal to the welding controller of hot welding press, welding control Device driving pressing mechanism movement processed, is adapted to normal range (NR) for welding pressure, accurate to keep the constant of welding pressure, it is ensured that weldering The consistency for connecing pressure, improves welding quality, effectively reduces product defect rate.Not only pressure detecting is accurate for the utility model Stablize, detection operation is fast and reliable；Parameter automatically saves, and is not afraid of powered-off fault；Highlighted numeral method, simple, intuitive；And It is small in size, it is at low cost, there is DC10V-26V ultra-wide power supply adaptability, be suitable for promoting and applying.

Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended Scope of the claims determine.

Claims

1. a kind of thermocompression bonding pressure monitor, which is characterized in that including pressure monitor ontology；The pressure monitor ontology packet Include welding pressure receive circuit, welding pressure processing circuit, welding pressure display circuit, key group circuit, power circuit and Imput output circuit；The input terminal that the welding pressure receives circuit is connect with the pressure sensor being set on hot welding press, Output end is connect with welding pressure processing circuit；The welding pressure processing circuit and welding pressure display circuit, power circuit, Imput output circuit connection, key group circuit connection；Wherein, it includes sensor interface connector that the welding pressure, which receives circuit, CN5, filter circuit, analog to digital conversion circuit, reference voltage circuit, the filter circuit include resistance R3, resistance R18, resistance R15, resistance R16, capacitor C4, capacitor C5, analog-digital conversion circuit as described include ADC chip U2, and the reference voltage circuit includes Three terminal regulator U5, resistance R12, resistance R13, resistance R9, capacitor C3；A termination of the resistance R3 simulates ground AGND, another End and one end of resistance R16, the SIG+ pin of sensor interface connector CN5, the other end of resistance R16 and the one of capacitor C4 The AIN+ pin connection at end, ADC chip U2, a termination benchmark of another termination simulation ground AGND, the resistance R18 of capacitor C4 Voltage end VREF, one end of another SIG- pin for terminating sensor interface connector CN5, resistance R15, resistance R15's is another End is connect with the AIN- pin of one end of capacitor C5, ADC chip U2, another termination simulation ground AGND of capacitor C5, three end The anode of voltage-stablizer U5 is connect with one end of simulation ground AGND, one end of resistance R9, capacitor C3, the other end of resistance R9 and three ends One end connection of the reference pole, resistance R12 of voltage-stablizer U5, the other end of capacitor C3, the other end of resistance R12, three terminal regulator The cathode of U5, one end of resistance R13 connect reference voltage terminal VREF；The welding pressure display circuit includes LED charactrons LED1, display plate interface CN4, driving circuit U4, inductance L3, resistance R5, resistance R6, resistance R7, capacitor C8, capacitor C9, capacitor C10, capacitor C11, capacitor C6, the LED charactrons LED1 connection driving circuit U4, the inductance L3 one termination display board connect The power pins of mouth CN4, the other end and one end of capacitor C11, one end of capacitor C6, the VDD pin of driving circuit U4, resistance R5 One end, one end of resistance R6, resistance R7 one end connection, the other end of capacitor C11, the other end of capacitor C6, driving circuit The GND pin of U4 is grounded, and the other end of resistance R5 is connect with the DIO pin of one end of capacitor C8, display plate interface CN4, resistance The other end of R6 is connect with the CLK pin of one end of capacitor C9, display plate interface CN4, and the other end of resistance R7 is with capacitor C10's One end, show plate interface CN4 STB pin connection, the other end of capacitor C8, the other end of capacitor C9, capacitor C10 the other end Ground connection.

2. thermocompression bonding pressure monitor according to claim 1, which is characterized in that the welding pressure processing circuit includes Single-chip microcontroller U1, mcu programming interface CN1, communication interface CN6, display plate interface CN3；The single-chip microcontroller U1 connection ADC chip U2, the mcu programming interface CN1, communication interface CN6, display plate interface CN3 connection single-chip microcontroller U1.

3. thermocompression bonding pressure monitor according to claim 2, which is characterized in that the welding pressure display circuit also wraps Include indicator light circuit；The indicator light circuit includes upper pressure limit indicator light LED2, low pressure limit indicator light LED3, monitor state Indicator light LED4 and current-limiting resistance R19；The cathode of the upper pressure limit indicator light LED2 is with low pressure limit indicator light LED3's The connection of one end of cathode, the cathode of monitor state indicator light LED4, current-limiting resistance R19, upper pressure limit indicator light LED2 is just The other end connection of pole, the anode of low pressure limit indicator light LED3, the anode of monitor state indicator light LED4, current-limiting resistance R19 Driving circuit U4.

4. thermocompression bonding pressure monitor according to claim 3, which is characterized in that the key group circuit includes increasing to press Key PB1, it reduces key PB2, setting button PB3, return to key PB4；The increase key PB1, key PB2 is reduced, is arranged and presses Key PB3, return key PB4 are connect with driving circuit U4.

5. thermocompression bonding pressure monitor according to claim 4, which is characterized in that the increase key PB1, reduce key PB2, setting button PB3, return key PB4 are all made of touch key.

6. thermocompression bonding pressure monitor according to claim 5, which is characterized in that the power circuit includes power supply connection Device CN2, line filter L1, fuse F1, zener diode ZD2, polarized capacitor C12, voltage stabilizing chip U3, capacitor C12, have Polar capacitor C13, resistance R17, capacitor C7, inductance L2, capacitor C14, the power connector CN2 connect DC power supply, the line The input terminal of path filter L1 connects power connector CN2, and output end is separately connected one end of fuse F1, zener diode The anode of ZD2, the other end and the cathode of zener diode ZD2, the anode of polarized capacitor C13, voltage stabilizing chip of fuse F1 The IN pin of U3 connects, the COM pin of voltage stabilizing chip U3, the cathode of polarized capacitor C13, zener diode ZD2 anode, electricity The cathode of one end, polarized capacitor C12 for hindering R17 is grounded, the OUT pin of the positive and voltage stabilizing chip U3 of polarized capacitor C12, One end connection of one end, inductance L2 of capacitor C7, the other end and the other end of resistance R17, one end of capacitor C14 of capacitor C7 connect It connects and is followed by simulation ground AGND, the other end of capacitor C14 is connect with the other end of inductance L2 is followed by feeder ear.

7. thermocompression bonding pressure monitor according to claim 6, which is characterized in that the imput output circuit includes input Circuit and output circuit；The input circuit includes resistance R1, resistance R2, capacitor C2, zener diode ZD1, the resistance R1 Connect to power supply one end connection of device CN2, resistance R2, one end of the other end of resistance R2 and capacitor C2, zener diode ZD1 Cathode, single-chip microcontroller U1 connection, the other end of capacitor C2 are grounded after connecting with the anode of zener diode ZD1；The output circuit Including the first output circuit and the second output circuit, first output circuit includes resistance R4, resistance R10, NPN type triode One end of Q1, the resistance R10 connect single-chip microcontroller U1, and the other end connects with one end of resistance R4, the base stage of NPN type triode Q1 It connects, the collector of NPN type triode Q1 connects power connector CN2, and the emitter of NPN type triode Q1 is another with resistance R4's It is grounded after the connection of end；Second output circuit includes resistance R8, resistance R11, NPN type triode Q2, and the one of the resistance R11 End connection single-chip microcontroller U1, the other end are connect with the base stage of one end of resistance R8, NPN type triode Q1, the collection of NPN type triode Q2 Electrode connects power connector CN2, and the emitter of NPN type triode Q2 is grounded after connecting with the other end of resistance R8.