CN210677288U

CN210677288U - Argon arc welding machine capable of being carried on external machine

Info

Publication number: CN210677288U
Application number: CN201920436323.3U
Authority: CN
Inventors: 丁涵
Original assignee: Shanghai Flama Welding Equipment Manufacture Co ltd
Current assignee: Shanghai Flama Welding Equipment Manufacture Co ltd
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-06-05
Anticipated expiration: 2029-04-02

Abstract

The utility model relates to a welding machine field, specific can carry on argon arc welding machine on external machinery that says so. The utility model provides a can carry on argon arc welding machine on external machinery, includes the bottom plate, characterized by: the bottom plate is the L type, and the right side of bottom plate is equipped with the front panel, and supreme positive negative pole output terminal, power supply terminal box and the control terminal platform of being equipped with in proper order are followed to the front panel on, be located the bottom plate horizontal panel between the perpendicular panel of front panel and bottom plate and be equipped with fan, output rectifying plate, rectifier bridge, contravariant mainboard, main transformer, hall sensor, high frequency absorption board, high frequency time clamp plate and high frequency inductance from a left side to the right side in proper order. Compared with the prior art, the machine is easier to operate by performing functional subtraction; only two functions of argon arc welding direct current welding and pulse welding are reserved in function; meanwhile, the small current welding is specially strengthened, so that the welding device has the capability of stably outputting 3A welding current and can be used for welding thin steel plates of 0.1mm grade.

Description

Argon arc welding machine capable of being carried on external machine

Technical Field

The utility model relates to a welding machine field, specific can carry on argon arc welding machine on external machinery that says so.

Background

In the argon arc welding machines in the market at present, in order to enable a machine to adapt to most occasions, the machines are mostly integrated machines with complex function setting. This makes the argon arc welding machine difficult to operate and prevents the operator from working as soon as possible. Meanwhile, most of the welders on the market work as independent units and cannot be mounted on external machines.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, designs an argon arc welding machine which can be carried on external machinery, performs functional subtraction, makes the machine easier to operate, only keeps two functions of argon arc welding direct current welding and pulse welding in function, and specially strengthens small current welding at the same time, so that the argon arc welding machine has the capability of stably outputting 3A welding current and can be used for welding thin steel plates of 0.1mm grade; meanwhile, the welding machine can be connected to a control panel of the control cabinet through a wiring terminal, and the welding machine and other machines can be integrally operated through an external control cabinet.

In order to realize the purpose, the argon arc welding machine capable of being carried on external machinery comprises a bottom plate and is characterized in that: the bottom plate is L-shaped, the right side of the bottom plate is provided with a front panel, positive and negative output terminals, a power supply junction box and a control terminal platform are sequentially arranged on the front panel from bottom to top, a fan, an output rectifying plate, a rectifying bridge, an inversion main board, a main transformer, a Hall sensor, a high-frequency absorption plate, a high-frequency double pressing plate and a high-frequency inductor are sequentially arranged on a horizontal panel of the bottom plate between the front panel and a vertical panel of the bottom plate from left to right, a middle partition plate is arranged above the high-frequency inductor and the fan, a control panel is arranged above the middle partition plate, protective coils are arranged on the middle partition plate around the control panel, and a housing is covered above the bottom; the positive output electrode of the front panel is connected with an output rectifying plate through a cable, the negative output electrode of the front panel is connected with one end of a high-frequency inductor, the other end of the high-frequency inductor is connected with a center tap of the output end of a main transformer, the main transformer is provided with three output ends, the other two output ends of the main transformer are connected with the output rectifying plate, the input end of the main transformer is connected with an inversion main board, two connecting ports of a high-frequency absorption plate are respectively connected with a positive output terminal and a negative output terminal, the high-frequency absorption plate is grounded, the input end of the high-frequency doubling plate is inserted into the two ends of the input end of the main transformer in a shell connection mode, the control end of the high-frequency doubling plate is connected; the inversion main board is connected with the control board in a wiring harness connection mode, and the control board is connected with a terminal wiring harness of a power supply junction box on the front panel.

A machine leg is arranged at each of four lower corners of the horizontal panel of the bottom plate, a fan mesh enclosure is embedded at the lower part of the vertical panel of the bottom plate, and the fan mesh enclosure is over against the fan; the top of the housing is provided with a handle, and the front panel positioned above the control terminal table is provided with a plurality of LED lamps.

The main circuit of the inverter mainboard comprises a relay J3, a DC + input pad J8 and a DC-input pad J9, wherein the model of the relay J3 is HF105F-1, a first port of the relay J3 is divided into two paths to be respectively connected with a 27V network and the cathode of a diode D6, the anode of the diode D6 is divided into two paths to be respectively connected with the C-pole port of a triode Q1 and the second port of a relay J3, the B-stage port of the triode Q1 is connected with one end of a resistor R140, the other end of the resistor R140 is connected with the anode of a zener diode Z1, the cathode of the zener diode Z1 is divided into three paths to be respectively connected with one end of a resistor R7, the fourth port of a photocoupler controlled end U36B and one end of a capacitor C9, the other end of the resistor R7 is connected with the 27V network, and the other end of the capacitor C9 is divided into three paths to be respectively connected with the third port of the photocoupler; the DC + input pad J8 is divided into four paths, and is respectively connected with one end of a resistor R14, one end of a resistor R26, an A pole port of a thyristor T6 and one end of a switch 43, the other end of the resistor R14 is divided into two paths and is respectively connected with a B pole port of a triode Q6 and one end of a resistor R22, the other end of the resistor R26 is divided into two paths and is respectively connected with one end of a resistor R27 and a first pole port of a photocoupler U36A, a second pole port of the U36A is connected with one end of a resistor R24, the other end of the resistor R24 is connected with a C pole port of a triode Q6, and an E pole port of the triode Q6 is connected with a cathode of a zener; the other end of the resistor R27 is connected with a G pole port of a thyristor T6, a K pole port of the thyristor T6 is connected with one end of a thermistor RT1, the other end of the thermistor RT1 is divided into nine paths and is respectively connected with the other end of a switch 43, one end of a capacitor C11, one end of a capacitor C18, one end of a capacitor C45, one end of a resistor R30, one end of a capacitor C33, a first port of an IGBTT1, a DC + network and a first port of the IGBTT2, the other end of the resistor R30 is connected with one end of the resistor R30, a second port of the IGBTT 30 is connected with the G30 network, a third port of the IGBTT 30 is divided into three paths and is respectively connected with an OUTA network, an output pad J30 and the first port of the IGBTT 30, a second port of the IGBTT 30 is connected with the G30 network, a second port of the IGBTT 30 is connected with a pad J30 network, a third port of the IGBTT 30 and a port of the third port of the IGBTT 72, a third port of the IGBTT 30, a third port of the IGBTT 72, a third port of the IGBTT 30 is, the fourth port of the mutual inductor T8 is connected with the first port of the needle seat CT, the second port of the IGBTT10 is connected with a G4 network, the third port of the IGBTT10 is connected with a DC-network, the third port of the IGBTT3, the other end of the capacitor C33, the other end of the resistor R28, the other end of the capacitor C45, the other end of the capacitor C18, the other end of the capacitor C11, the anode of the zener diode Z2, the other end of the resistor R22 and the DC-input pad J9 in ten ways.

The driving circuit of the inverter main board comprises a chip U2 and a chip U3, the chip U2 and the U3 are TC4420 in model number, a first port and an eighth port of the chip U2 are respectively connected with one end of a capacitor C43, the first port and the eighth port of a chip U3, one end of a resistor R114, one end of a capacitor C36, the cathode of a diode D8 and the cathode of a diode D7 in six ways, the other end of the resistor R114 is connected with a 15V network, the other end of the capacitor C36 is grounded, and the other end of the capacitor C43 is grounded; the second port and the third port of the chip U2 are merged and then are divided into two paths to be respectively connected with the AOUT network and one end of a resistor R54, and the other end of the resistor R54 is grounded; the fourth port and the fifth port of the chip U2 are grounded, the sixth port and the seventh port of the chip U2 are divided into three paths and are respectively connected with the anode of the diode D7, the cathode of the diode D39 and one end of the resistor R67, the other end of the diode D39 is grounded, and the other end of the resistor R67 is connected with the first port of the driving transformer TR 1; the second port and the third port of the chip U3 are respectively connected with the BOUT network and one end of a resistor R55 in two ways, and the other end of the resistor R55 is grounded; the fourth port and the fifth port of the chip U3 are grounded, the sixth port and the seventh port of the chip U3 are divided into three paths and are respectively connected with the anode of a diode D8, the cathode of a diode D9 and one end of a resistor R68, the anode of a diode D9 is grounded, the other end of the resistor R68 is connected with the second port of a driving transformer TR1, the third port of the driving transformer TR1 is divided into two paths and is respectively connected with one end of a resistor R71 and the anode of a diode D40, the other end of a resistor R71 is connected with one end of a resistor R139, the other end of the resistor R139 is connected with the B port of a triode Q7, the E terminal port of the triode Q7 is divided into two paths and is respectively connected with the cathode of a diode D40 and one end of a resistor R75, the other end of the resistor R75 is divided into three paths and is respectively connected with the cathode of a voltage stabilizing diode Z4, one end of a resistor R113 and a G1 network, the other end of the fourth port of the driving transformer TR1 is respectively connected, the seven port of the driving transformer TR1 is divided into two paths to be respectively connected with one end of a resistor R72 and the anode of a diode D42, the other end of a resistor R72 is connected with one end of a resistor R137, the other end of the resistor R137 is connected with the B port of a triode Q8, the E port of a triode Q8 is divided into two paths to be respectively connected with the cathode of a diode D42 and one end of a resistor R76, the other end of a resistor R76 is divided into three paths to be respectively connected with the cathode of a voltage stabilizing diode Z10, one end of a resistor R118 and a G2 network, the other end of the resistor R118 is divided into four paths to be respectively connected with an OUTB network, the anode of a voltage stabilizing diode Z10, the C port of a triode Q8 and the eighth port of a driving transformer TR1, the five port of the driving transformer TR1 is divided into four paths to be respectively connected with the C port of a triode Q9, the anode of a voltage stabilizing diode Z11, one end of a resistor R136 and a, The other end of the resistor R80 is divided into two paths and is respectively connected with an E pole port of a voltage stabilizing triode Q9 and a cathode of a diode D44, a B pole port of a triode Q9 is connected with one end of a resistor R117, the other end of the resistor R117 is connected with one end of a resistor R73, the other end of the resistor R73 is divided into two paths and is respectively connected with an anode of a diode D44 and a sixth port of a driving transformer TR1, a ninth port of the driving transformer TR1 is divided into four paths and is respectively connected with a C pole port of a triode Q10, an anode of a voltage stabilizing diode Z12, one end of a resistor R138 and a DC-network, the other end of the resistor R138 is divided into three paths and is respectively connected with a cathode of a voltage stabilizing diode Z12, a G3 network and one end of a resistor R81, the other end of the resistor R81 is divided into two paths and is respectively connected with an E pole port of a voltage stabilizing triode Q10 and a cathode of a diode D42, a B pole port of a triode Q39 10 is connected, the other end of the resistor R74 is connected with the anode of the diode D43 and the No. ten port of the driving transformer TR1 in two paths respectively.

The secondary power supply circuit of the inverter mainboard comprises a chip U4, the model of the chip U4 is UC3843, a fifth port of the chip U4 is grounded, a second port of the chip U4 is divided into four paths to be respectively connected with one end of a capacitor C55, one end of a capacitor C56, one end of a resistor R141 and one end of a controlled end U37B of a photoelectric coupler, a V port at the other end of the U37B, the other end of the capacitor C55 is divided into two paths to be respectively connected with the other end of the resistor R141 and grounded, the other end of the capacitor C56 is divided into two paths to be respectively connected with a first port of the chip U4 and an anode of a diode D36, a cathode of the diode D36 is divided into two paths to be respectively connected with one end of the resistor R66 and one end of the capacitor C41, the other end of the capacitor C41 is grounded, the other end of the resistor R5 is connected with an eighth port of the chip U4, a fourth port of the chip U6324 is divided into two paths to be respectively connected with one end of the capacitor C65 and one end of the resistor R59142, the other end of the capacitor C66 is grounded, the third port of the chip U4 is divided into two paths and is respectively connected with one end of the resistor R143 and one end of the capacitor C54, the other end of the capacitor C54 is grounded, the other end of the resistor R143 is connected with the CFB2 network, the seventh port of the chip U4 is divided into two paths and is respectively connected with the V port and one end of the capacitor C52, the other end of the capacitor C52 is grounded, the sixth port of the chip U4 is connected with one end of the resistor R145, the other end of the resistor R145 is divided into two paths and is respectively connected with the cathode of the zener diode Z9 and the G-pole port of the FET T11, the anode of the zener diode Z9 is divided into four paths and is respectively connected with one end of the resistor R47, one end of the resistor R146, one end of the resistor R147 and the S-pole port of the FET T38, the other end of the resistor R47 is divided into three paths and is respectively connected with the other end of the resistor R146, the other end of the resistor R147, the cathode of the diode D35 is divided into two paths and is respectively connected with one end of a resistor R37 and one end of a capacitor C16, the other end of a resistor R37 is divided into four paths and is respectively connected with the other end of the capacitor C16, the twelve port of a secondary power transformer TR2, a VDD network and one end of a capacitor C46, the other end of the capacitor C46 is grounded, the eight port of a secondary power transformer TR2 is grounded, the seven port of the secondary power transformer TR2 is connected with the anode of a diode D34, the cathode of the diode D34 is divided into two paths and is respectively connected with one end and the V port of a capacitor C67, the other end of a capacitor C67 is grounded, the six port of a secondary power transformer TR2 is connected with the anode of a diode D27, the cathode of the diode D27 is divided into two paths and is respectively connected with the anodes of the capacitor C39, the capacitor C19, the first port of an HF1 needle bed and the anode of a diode D32, the cathode of the diode D32 is connected with the anode of the diode D36, the other end of the capacitor C39 is divided into four paths and is respectively connected with a fifth port of a secondary power transformer TR2, the other port of the capacitor C19, a second port of a needle seat HF1 and the ground, a second port of a secondary power transformer TR2 is connected with the cathode of a diode D28, the anode of the diode D28 is divided into three paths and is respectively connected with one end of a capacitor C38, one end of a capacitor C42 and a second port of a needle seat FAN1, a first port of a FAN1 is grounded, the other end of a capacitor C38 is divided into six paths and is respectively connected with a third port of a secondary power transformer TR2, one end of a capacitor C29, one end of a capacitor C30, the other end of a capacitor C42, one end of a resistor R45 and the ground, the other end of the capacitor C29 is divided into four paths and is respectively connected with the cathode of a diode D29, the cathode of a voltage stabilizing diode Z599, the other end of a capacitor C30 and the other end of a resistor R82; the anode of the Zener diode Z7 is connected with the cathode of the Zener diode Z8, the anode of the Zener diode Z8 is connected with one end of a resistor R48, the other end of the resistor R48 is divided into two paths to be respectively connected with one end of a resistor R49 and a first port of a photoelectric coupler control end U37A, and the other end of the resistor R49 is divided into two paths to be respectively connected with a second port of the U37A and the ground; the V port is connected with one end of a resistor R144, the other end of the resistor R144 is connected with one end of a resistor R65, the other end of a resistor R65 is connected with one end of a resistor R64, the other end of the resistor R64 is divided into three paths to be respectively connected with a VDD network, one end of a capacitor C37 and one end of a resistor R31, the other end of the resistor R31 is connected with a cathode of a diode D33, an anode of the diode D33 is connected with a DC + network, the other end of the capacitor C37 is divided into two paths to be respectively connected with one end of a TS-switch and the ground, and the other end of the.

The circuit of the output rectifying board further comprises an input pad J18, an input pad J17 and an output pad J19, wherein J18 is divided into four paths which are respectively connected with one end of a resistor R148, one end of a resistor R152, the anode of a fast recovery diode D44 and the anode of a fast recovery diode D45, the other end of the resistor R148 is divided into three paths which are respectively connected with the other end of the resistor R152, one end of a resistor R153 and one end of a resistor R149, the other end of the resistor R153 is divided into two paths which are respectively connected with the other end of the resistor R149 and one end of a capacitor C68, the other end of the capacitor C68 is divided into thirteen paths which are respectively connected with the cathode of a fast recovery diode D44, the cathode of a fast recovery diode D45, the cathode of a fast recovery diode D46, the cathode of a fast recovery diode D47, the output pads J14, J21, J16, J15, J23, J24, one end of a first end of a second port of an output pad J22 and one end of a shunt row F6951 of a shunt row F8653 and a second port of, the other end of the capacitor C69 is divided into two paths to be respectively connected with one end of the resistor R151 and one end of the resistor R155, the other end of the resistor R151 is divided into three paths to be respectively connected with the other end of the resistor R155, one end of the resistor R150 and one end of the resistor R154, and the other end of the resistor R150 is divided into four paths to be respectively connected with the other end of the resistor R154, the anode of the fast recovery diode D46, the anode of the fast recovery diode D47 and the input pad J17.

The circuit of the high-frequency voltage doubling plate comprises a needle seat J5, a needle seat J6, a needle seat J7 and a relay J20, wherein the model of the relay J20 is SZ-S-124DM, a first port of the needle seat J5 is connected with one end of a resistor R60, the other end of the resistor R60 is connected with the anode of a diode D18, one end of a capacitor C15, one end of a capacitor C28, one end of a capacitor C63, one end of a resistor R62, a K-pole port of a thyristor T17, the anode of a diode D25 and one end of a resistor R100 in eight ways respectively, the other end of the capacitor C28 is connected with the first port of the needle seat J28 and one end of the resistor R28 in two ways respectively, the other end of the resistor R28 is connected with one end of the capacitor C28, the cathode of the diode D28 is connected with the cathode of the diode D28 and one end of the capacitor C28 in three ways respectively, the other end of the capacitor C21 is divided into three paths and is respectively connected with the anode of the diode D20, the cathode of the diode D18 and one end of the capacitor C14, and the other end of the capacitor C14 is connected with the second port of the needle seat J5 after being connected with the switch; the other end of the capacitor C63 is connected with one end of a resistor R104, the other end of the resistor R104 is connected with one end of an inductor L4, the other end of the inductor L4 is divided into two paths and is respectively connected with one end of a resistor R111 and one end of a resistor R63, the other end of the resistor R63 is connected with a bidirectional trigger diode V1, the other end of the bidirectional trigger diode V1 is divided into two paths and is respectively connected with the other end of the resistor R62 and a G pole port of a thyristor T17, and an A pole port of the thyristor T17 is divided into four paths and is respectively connected with the other end of the resistor R100, a cathode of a diode D25, the other end of the resistor R111; the first port of the needle seat J6 is connected with the cathode of the diode D26 and one end of the relay J20 respectively, and the anode of the diode D26 and the other end of the relay J20 are combined and connected with the second port of the needle seat J6.

The circuit of the high-frequency absorption plate comprises an input bonding pad J1, an input bonding pad J2 and a support post J4, wherein the input bonding pad J1 is divided into four paths to be respectively connected with one end of a capacitor C4, one end of a capacitor C1, one end of a resistor R2 and the anode of a diode D5, the cathode of the diode D5 is divided into two paths to be respectively connected with one end of a resistor R4 and one end of a capacitor C2, the other end of the capacitor C2 is divided into five paths to be respectively connected with the other end of a resistor R4, the other end of a resistor R2, the other end of a capacitor C1, one end of a capacitor C6 and the input bonding pad J2, and the other end of a capacitor C6 is divided into two paths to.

The circuit of the control panel comprises a single chip microcomputer U10, a chip U6, a needle seat J10, a needle seat J28 and a needle seat J29, the model of the single chip microcomputer U10 is MB95F698, the model of the chip U6 is 7805, a fifteen-port of the single chip microcomputer U10 is divided into two paths to be respectively connected with one end of a resistor R53 and a second port of a needle seat DBG, the other end of the resistor R53 is connected with a 5V port, a first port of the needle seat DBG is connected with the 5V port, and a third port of the needle seat DBG is grounded; the 5V port is divided into five paths and is respectively connected with one end of a capacitor C48, one end of a resistor R50, one end of a needle seat PULSE, one end of a resistor R115 and one end of a resistor R116, the other end of the resistor R115 is divided into four paths and is respectively connected with a thirty-nine port of a singlechip U10, a cathode of a voltage stabilizing diode Z42, one end of a capacitor C90 and a first port of a needle seat OT1, the other end of the capacitor C90 is divided into three paths and is respectively connected with an anode of a voltage stabilizing diode Z42, a second port of the needle seat OT1 and the ground, the other end of the resistor R116 is divided into four paths and is respectively connected with a first port of a needle seat OT2, a cathode of a voltage stabilizing diode Z43, one end of a capacitor C89 and a fifth port of a singlechip U10, and the other end of a capacitor C89 is divided into three paths and is respectively connected with a; the other end of the capacitor C48 is grounded, the other end of the resistor R50 is respectively connected with a forty-five port of the singlechip U10 and one end of the capacitor C51, the other end of the capacitor C51 is grounded, the second port of the needle seat PULSE is divided into two paths and is respectively connected with a forty-three port of the singlechip U10 and one end of the resistor R51, and the other end of the resistor R51 is grounded; the first port of the needle seat J10 is divided into two paths to be connected with a VCC power supply port and the cathode of the diode D23 respectively, the anode of the diode D23 is divided into five paths to be connected with the third port of the needle seat J10, the cathode of the diode D24, the ninth port of the operational amplifier U5C, one end of the resistor R39 and one end of the resistor R56 respectively, the other end of the resistor R39 is divided into three paths to be connected with one end of the resistor R40, one end of the capacitor C31 and one end of the resistor R41 respectively, the other end of the resistor R41 is divided into two paths to be connected with the forty-two ports of the singlechip U10 and one end of the capacitor C32 respectively, and the other end of the capacitor C32 is divided into three paths to be connected with the other end of; the anode of the diode D24 is divided into two paths to be connected with a VCC negative power supply port and a second port of the needle seat J10 respectively, a fourth port of the needle seat J10 is grounded, a tenth port of the operational amplifier U5C is divided into three paths to be connected with one end of a resistor R133, one end of a capacitor C113 and one end of a resistor R132 respectively, the other end of the resistor R132 is connected with the VCC power supply port, and the other end of the capacitor C113 is divided into two paths to be connected with the other end of the resistor R133 and grounded respectively; the eighth port of the operational amplifier U5C is connected with the anode of the diode D37, the cathode of the diode D37 is respectively connected with one end of the resistor R161 and the G-pole port of the NMOS tube T5, and the other end of the resistor R161 is grounded; the S pole port of the NMOS tube T5 is divided into three paths, and is respectively connected with one end of a resistor R8, the ground and a third port of a chip U1, the model of the chip U1 is UC3846, the D pole port of the NMOS tube T5 is connected with one end of a resistor R162, and the other end of the resistor R162 is respectively connected with the other end of a resistor R8 and a ninth port of a chip U1; the other end of the resistor R56 is respectively connected with one end of a resistor R29, the anode of a voltage stabilizing diode VD1, the second port of the amplifier U5A, the cathode of a diode D10, the anode of a diode D11, one ends of a resistor R32 and a resistor R46, one end of a capacitor C27, the other end of a capacitor C27 is respectively connected with the other end of a resistor R46 and one end of a resistor R38, the other end of a resistor R38 is connected with the anode of a diode D31, the cathode of a diode D31 is respectively connected with the other end of a resistor R32, the seventh port of an amplifier U5B and one end of a resistor R34, the fifth port of an amplifier U5B is grounded, the sixth port of an amplifier U5B is respectively connected with one end of a resistor R23, the other end of a resistor R34 and one end of a resistor R20, the other end of a resistor R20 is, a third port of the variable resistor VR3 is connected with a VCC power supply port, and a first port of the variable resistor VR3 is connected with a second port of the needle base Driver; the other end of the resistor R23 is connected with a second port of the variable resistor VR2, a first port of the variable resistor VR2 is grounded, a third port of the variable resistor VR2 is respectively connected with thirteen and fourteen ports of the amplifier U5D, a twelfth port of the amplifier U5D is respectively connected with one end of the resistor R13 and one end of the capacitor C26, and the other end of the capacitor C26 is respectively connected with one end of the resistor R11 and the ground; the other ends of the resistor R11 and the resistor R13 are connected with a thirty-one port of the singlechip U10 in a combined manner; the third port of the amplifier U5A is connected with the anode of the diode D10, the cathode of the diode D11 and the ground respectively; a first port of the amplifier U5A is connected with a cathode of a voltage-stabilizing diode VD1, one end of a resistor R36 and one end of a capacitor C23 respectively, the other end of the capacitor C23 is connected with the other end of a resistor R29, the other end of the resistor R36 is divided into four paths and is connected with a cathode of a diode D12, one end of a capacitor C24, one end of a resistor R33, one end of a resistor R42 and one end of a resistor R19 respectively, an anode of the diode D12, the other end of the capacitor C24 and the other end of the resistor R33 are grounded respectively, the other end of the resistor R42 is connected with a C-pole port of a triode Q5, an E-pole port of the triode Q5 is grounded, a B-pole port of the triode Q5 is connected with one end of a resistor R18, and the other; the other end of the resistor R19 is divided into two paths and is respectively connected with one end of a capacitor C13 and a fifth port of a chip U1, the other end of the capacitor C13 is grounded, a twelfth port of the chip U1 is grounded, a thirteenth port of the chip U1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with a VCC power supply port, a second port of the chip U1 is connected with a VREF network, a fourth port of the chip U1 is divided into five paths and is respectively connected with one end of a capacitor C93, one end of a resistor R9, one end of a resistor R15, one end of a resistor R119 and one end of a resistor R16, the other end of the resistor R9 is grounded, the other end of a resistor R16 is connected with a CT network, the other end of the resistor R119 is connected with one end of a capacitor C92, the other end of the capacitor C92 is divided into three paths and is respectively connected with the other end of a resistor R15, the other end of a capacitor C93 and an E pole port of a, One end of the capacitor C12 and an eighth port of the chip U1, and the other end of the capacitor C10 is divided into two paths to be respectively connected with the other end of the capacitor C12 and the ground; the fourteen port of the chip U1 is connected with the fifth port of the Driver and the anode of the diode D14, the eleventh port of the chip U1 is connected with the fourth port of the Driver and the anode of the diode D15, the cathodes of the diode D14 and the diode D15 are connected with one end of the resistor R122 and one end of the capacitor C108, the other end of the resistor R122 is grounded, the other end of the capacitor C108 is connected with one end of the resistor R123 and the G pole of the NMOS tube T4, the other end of the resistor R123 is grounded, the S pole of the NMOS tube T4 is grounded, the D pole of the NMOS tube T4 is connected with one end of the resistor R121, the third port of the amplifier U30A and one end of the capacitor C107, the other end of the capacitor C107 is grounded, the other end of the resistor R121 is connected with one end of the capacitor C105 and one end of the resistor R120, the other end of the resistor R120 is grounded, the other end of the capacitor C105 is connected with the cathode of the diodes D2 and D3, the cathode of, One end of the R17, the other end of the R17 is connected with one end of a capacitor C17 and the CT network respectively, the other end of the capacitor C17 is grounded, the anode of the diode D2 is connected with the first port of the pin seat HGQ and the cathode of the diode D1 respectively, the anode of the diode D3 is connected with the second port of the pin seat HGQ and the cathode of the diode D4 respectively, and the anode of the diode D1, the anode of the diode D4 and the other end of the resistor R6 are grounded in a combined manner; the other end of the resistor R3 is respectively connected with one end of a capacitor C5, one end of a resistor R5, a sixteen-numbered port of a chip U1, one end of a resistor R129, one end of a resistor R127 and the cathode of a diode D13, the anode of a diode D13 is connected with one end of a resistor R21, and the other end of the resistor R21 is connected with a 47-numbered port of a singlechip U10; the other ends of the capacitor C5 and the resistor R5 are grounded; the other end of the resistor R129 is connected with the cathode of the diode D17, the anode of the diode D17 is respectively connected with the seventh port of the amplifier U30B and one end of the resistor R128, and the other end of the resistor R128 is connected with a VCC power supply end; a fifth port of the amplifier U30B is connected with a VREF network, a sixth port of the amplifier U30B is respectively connected with one end of a resistor R96, one end of a capacitor C44 and one end of a resistor R87, the other end of a resistor R87 is connected with a VCC power supply end, and the other end of a resistor R96 and the other end of the capacitor C44 are combined and grounded; the other end of the resistor R127 is connected with the cathode of the diode D16, the anode of the diode D16 is respectively connected with the first port of the amplifier U30A and one end of the resistor R126, the other end of the resistor R126 is connected with a VCC power supply end, the second port of the amplifier U30A is respectively connected with one ends of the resistor R124 and the resistor R125 and one end of the capacitor C109, the other ends of the resistor R124 and the capacitor C109 are grounded, and the other end of the resistor R125 is connected with the VCC power supply end; a first port of a chip U6 is connected with a VCC power supply end and one end of a capacitor C49 respectively, the model of the chip U6 is 7805, the other end of the capacitor C49 is connected with a second port of the chip U6, one end of a capacitor C50, the cathode of a light-emitting diode LED1 and the ground, the anode of the light-emitting diode LED1 is connected with one end of a resistor R52, and the other end of the resistor R52 and the other end of the capacitor C50 are connected with a third port of the chip U6 in a combined manner; the thirty-third port of the single chip microcomputer U10 is connected with one end of a resistor R166, the other end of the resistor R166 is connected with the G pole end of an NMOS tube T9, the D pole end of the NMOS tube T9 is connected with an SS network, the S pole end of the NMOS tube T9 is connected with the fourth end of a controlled end U33B of a photoelectric coupler, and the third end of the controlled end U33B of the photoelectric coupler is grounded; a port 44 of the singlechip U10 is respectively connected with one end of a resistor R135, one end of a resistor R134, one end of a capacitor C91 and a port II of a photoelectric coupler controlled end U27, the other end of the resistor R135 is connected with a port B of a triode Q3, a port E of the triode Q3 is grounded, a port C of a triode Q3 is respectively connected with one end of a resistor R131 and a port I of a needle base Ready, the other end of the resistor R131 is connected with a 5V power supply end, and a port I of the needle base Ready is grounded; the other end of the resistor R134 is connected with a first port of the needle seat Aonormal, and a second port of the needle seat Aonormal is grounded; a first port of a controlled end U27 of the photoelectric coupler is respectively connected with the other end of a capacitor C91 and one end of a resistor R107, the other end of the resistor R107 is connected with a 5V power supply end, a third port of a controlled end U27 of the photoelectric coupler is connected with one end of a resistor R110, the other end of the resistor R110 is respectively connected with one end of a capacitor C100, one end of a resistor R109 and a B pole end of a triode Q16, and the other end of the capacitor C100, the other end of the resistor R109 and an E pole end of the triode Q16 are respectively grounded; the C pole terminal of the triode Q16 is respectively connected with the second port of the pin base 24VOUT1 and the anode of the diode D19, the first port of the pin base 24VOUT1, the cathode of the diode D19 and the fourth port of the controlled end U27 of the photoelectric coupler are combined with a 24V power supply end; the forty-first port of the singlechip U10 is respectively connected with the cathode of a zener diode Z3, one end of a capacitor C78 and one end of a resistor R89, the anode of the zener diode Z3 and the other end of the capacitor C78 are grounded, the other end of a resistor R89 is respectively connected with the thirty-seven port of the singlechip U10, one end of a capacitor C64, one end of a resistor R88 and one end of a resistor R86, the other end of a capacitor C64 and the other end of a resistor R88 are respectively grounded, the other end of a resistor R86 is respectively connected with the first port and the second port of an amplifier U A, the third port of the amplifier U32A is respectively connected with one end of a capacitor C58, one end of a resistor R85 and the fifth port of a photocoupler controlled end U17, the other end of a capacitor C58 and the other end of a resistor R85 are respectively grounded, the sixth port of a photocoupler controlled end U17 is connected with a power supply end, the first port of a photocoupler controlled end U36 17 is grounded, and the second port of a photocoupler U17 is, the other end of the resistor R57 is respectively connected with one end of a capacitor C57 and a first port of an amplifier U29A, the other end of the capacitor C57 is respectively connected with a fourth port of a controlled end U17 of the photoelectric coupler, one end of a resistor R77 and a second port of an amplifier U29A, the other end of the resistor R77 is grounded, a third port of the controlled end U17 of the photoelectric coupler is respectively connected with one end of a capacitor C96, one end of a resistor R108 and one end of a resistor R82, the other end of the capacitor C96 and the other end of the resistor R108 are respectively grounded, and the other end of the resistor R82 is respectively connected with one end of a resistor R163 and a first port of a needle seat VFB; the second port of the needle seat VFB is grounded; the other end of the resistor R163 is respectively connected with one end of the resistor R164, one end of the capacitor C114 and the cathode of the voltage stabilizing diode Z45, and the other end of the resistor R164 and the other end of the capacitor C114 are combined and grounded; the anode of the Zener diode Z45 is connected with the cathode of the Zener diode Z44, the anode of the Zener diode Z44 is respectively connected with one end of the resistor R165 and the first port of the controlled end U33A of the photoelectric coupler, and the second port of the controlled end U33A of the photoelectric coupler and the other end of the resistor R165 are combined and grounded; the second port of the needle seat J28 is grounded, the first port of J28 is respectively connected with one end of a capacitor C35 and the second port of a photoelectric coupler controlled end U12, the other end of the capacitor C35 is respectively connected with the first port of a photoelectric coupler controlled end U12 and one end of a resistor R43, the other end of the resistor R43 is connected with a 24V power supply end, the four port of the photoelectric coupler controlled end U12 is connected with a 5V power supply end, the three ports of the photoelectric coupler controlled end U12 are respectively connected with the forty-six port of the singlechip U10, one end of a capacitor C40 and one end of a resistor R44, and the other end of the capacitor C40 and the other end of the resistor R44 are grounded in a combined mode; a first port of the needle seat J29 is connected with one end of a resistor R83, the other end of the resistor R83 is respectively connected with one end of a resistor R84, one end of a capacitor C97 and a third port of an amplifier U34A, the other end of the resistor R84 and the other end of the capacitor C97 are respectively grounded, a second port of the amplifier U34A is respectively connected with one end of a resistor R78, one end of the capacitor C59 and a fourth port of a photoelectric coupler controlled end U18, and the other end of the resistor R78 is grounded; a first port of the amplifier U34A is connected with the other end of the capacitor C59, one end of the resistor R58 and the other end of the resistor R58 respectively and is connected with a second port of a controlled end U18 of the photoelectric coupler, a first port of the controlled end U18 of the photoelectric coupler is grounded, and a third port of the controlled end U18 of the photoelectric coupler is connected with a 24V power supply end; a sixth port of a controlled end U18 of the photoelectric coupler is connected with a VCC power supply end; a fifth port of a controlled end U18 of the photoelectric coupler is respectively connected with one end of a resistor R94, one end of a capacitor C60 and a third port of an amplifier U35A, the other end of the resistor R94 and the other end of the capacitor C60 are respectively grounded, a first port and a second port of the amplifier U35A are combined and connected with one end of a resistor R95, the other end of the resistor R95 is respectively connected with a fourth port of a singlechip U10, one end of the resistor R70, one end of a capacitor C81 and a cathode of a voltage stabilizing diode Z6, the other end of the capacitor C81 and an anode of the voltage stabilizing diode Z6 are combined and grounded, and the other end of the resistor R70 is grounded; a second port of the needle seat J29 is connected with one end of a resistor R105, the other end of the resistor R105 is respectively connected with one end of a resistor R106, one end of a capacitor C98 and a fifth port of an amplifier U34B, the other end of the resistor R106 and the other end of the capacitor C98 are respectively grounded, a sixth port of the amplifier U34B is respectively connected with one end of a resistor R79, one end of a capacitor C61 and a fourth port of a controlled end U19 of a photoelectric coupler, and the other end of the resistor R79 is grounded; a first port of the amplifier U34B is connected with the other end of the capacitor C61, one end of the resistor R59 and the other end of the resistor R59 respectively and is connected with a second port of a controlled end U19 of the photoelectric coupler, a first port of the controlled end U19 of the photoelectric coupler is grounded, and a third port of the controlled end U19 of the photoelectric coupler is connected with a 24V power supply end; a sixth port of a controlled end U19 of the photoelectric coupler is connected with a VCC power supply end; a fifth port of a controlled end U19 of the photoelectric coupler is respectively connected with one end of a resistor R101, one end of a capacitor C62 and a fifth port of an amplifier U35B, the other end of the resistor R101 and the other end of the capacitor C62 are respectively grounded, a sixth port and a seventh port of the amplifier U35B are combined and connected with one end of a resistor R103, the other end of the resistor R103 is respectively connected with a thirty-eight port of a singlechip U10, one end of a resistor R69, one end of a capacitor C80 and a cathode of a zener diode Z5, the other end of the capacitor C80 and an anode of the zener diode Z5 are combined and grounded, and the other end of the resistor R69 is grounded; the third port of the needle seat J29 is connected with the C pole end of the triode Q4, the E pole end of the triode Q4 is grounded, the B pole end of the triode Q4 is connected with one end of the resistor R35, the other end of the resistor R35 is respectively connected with one end of the capacitor C86 and the resistor R99, the third port of the controlled end U25 of the photoelectric coupler, and the other ends of the capacitor C86 and the resistor R99 are grounded in a combined mode; a fourth port of a controlled end U25 of the photoelectric coupler is connected with a 24V power supply end, a second port of a controlled end U25 of the photoelectric coupler is grounded, a first port of a controlled end U25 of the photoelectric coupler is connected with one end of a circuit R93, and the other end of the circuit R93 is connected with a thirty-six port of a single chip microcomputer U10; a ninth port of the singlechip U10 is connected with one end of a resistor R98, the other end of the resistor R98 is connected with a first port of a controlled end U26 of the photoelectric coupler, a second port of the controlled end U26 of the photoelectric coupler is grounded, a third port of the controlled end U26 of the photoelectric coupler is respectively connected with one end of a capacitor C94, one end of a resistor R102, the ground and an S pole end of an NMOS tube T7, and a D pole end of the NMOS tube T7 is respectively connected with an anode of a diode D38 and a second port of a needle base FZNJ; a first port of the needle base ZNFJ is connected with a cathode of a diode D38, a power supply end of 24V and one end of a resistor R97 respectively, and the other end of the resistor R97 is connected with the other end of a resistor R102, a G pole end of an NMOS tube T7, the other end of a capacitor C94 and a fourth port of a controlled end U26 of a photoelectric coupler respectively; the eight port of the singlechip U10 is connected with one end of a resistor R92, the other end of the resistor R92 is connected with the first port of a controlled end U24 of a photoelectric coupler, the second port of the controlled end U24 of the photoelectric coupler is grounded, the third port of the controlled end U24 of the photoelectric coupler is connected with one end of a resistor R91, the other end of the resistor R91 is respectively connected with one end of a capacitor C85, one end of a resistor R90 and the B pole of a triode Q15, the other end of the capacitor C85 and the other end of the resistor R90 are respectively grounded, the E pole of the triode Q15 is grounded, the C pole of the triode Q15 is connected with the first port of a needle seat HF, the second port of the needle seat HF is grounded, and the third port of the needle seat HF is connected; a fourth port of the controlled end U24 of the photoelectric coupler is connected with a 24V power supply end; the first port of the pin socket POWER is connected with one end of a resistor R130, and the other end of the resistor R130 is connected with a VCC POWER supply end; the second port of the needle base POWER is grounded; u24, U25 and U26 are photocouplers with the model number of EL817, U12 is a photocoupler with the model number of PC817, and U17, U18 and U19 are linear photocouplers with the model number of HCNR 200.

Compared with the prior art, the utility model performs the subtraction on the function, so that the machine is easier to operate; only two functions of argon arc welding direct current welding and pulse welding are reserved in function; meanwhile, the small current welding is specially strengthened, so that the welding machine has the capability of stably outputting 3A welding current and can be used for welding thin steel plates of 0.1mm grade; can be connected to a control panel of the control cabinet through a wiring terminal, and the welding machine and other machines are integrally operated through an external control cabinet.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a schematic diagram of a main circuit of the middle inverter main board of the present invention.

Fig. 3 is a schematic diagram of a driving circuit of the middle inverter main board of the present invention.

Fig. 4 is a schematic diagram of the secondary power circuit of the middle inverter main board of the present invention.

Fig. 5 is a schematic circuit diagram of the middle output rectifying board of the present invention.

Fig. 6 is a schematic circuit diagram of the middle-high frequency pressing plate of the present invention.

Fig. 7 is a schematic circuit diagram of the middle-high frequency absorption plate of the present invention.

Fig. 8a is a schematic circuit diagram of the current feedback circuit of the middle control board according to the present invention.

Fig. 8b is a schematic circuit diagram of the thermal protection circuit of the control board according to the present invention.

Fig. 8c is a schematic circuit diagram of the voltage feedback circuit of the middle control board according to the present invention.

Fig. 8d is a schematic circuit diagram of the current regulating circuit of the middle control board according to the present invention.

Fig. 8e is a schematic circuit diagram of the frequency control circuit of the middle control board according to the present invention.

Fig. 9 is a schematic diagram of a PWM control circuit of the middle control panel of the present invention.

Fig. 10 is an external signal receiving circuit of the control panel of the present invention.

Referring to fig. 1, wherein 1 is a handle, 2 is a housing, 3 is a middle partition board, 4 is a bottom board, 5 is a fan, 6 is a fan guard, 7 is a machine foot, 8 is an output rectifying board, 9 is a rectifying bridge, 10 is an inverter main board, 11 is a main transformer, 12 is a hall sensor, 13 is a high-frequency absorption board, 14 is a high-frequency inductor, 15 is a front panel, 16 is a positive and negative output terminal, 17 is a power supply junction box, 18 is a control terminal block, 19 is an LED lamp, 20 is a high-frequency voltage doubling board, 21 is a protective coil, and 22 is a control board.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the bottom plate 4 is L-shaped, the right side of the bottom plate 4 is provided with a front panel 15, the front panel 15 is sequentially provided with a positive and negative output terminal 16, a power supply terminal box 17 and a control terminal table 18 from bottom to top, a horizontal panel of the bottom plate 4 between the front panel 15 and the vertical panel of the bottom plate 4 is sequentially provided with a fan 5, an output rectifying plate 8, a rectifying bridge 9, an inverter main board 10, a main transformer 11, a hall sensor 12, a high-frequency absorption plate 13, a high-frequency double-pressing plate 20 and a high-frequency inductor 14 from left to right, a middle partition plate 3 is arranged above the high-frequency inductor 14 and the fan 5, a control plate 22 is arranged above the middle partition plate 3, a protective coil 21 is arranged on the middle partition plate 3 around the control plate 22, and a housing; the positive output electrode of the front panel 15 is connected with the output rectifying plate 8 through a cable, the negative output electrode of the front panel 15 is connected with one end of a high-frequency inductor 14, the other end of the high-frequency inductor 14 is connected with the center tap of the output end of the main transformer 11, the main transformer 11 is provided with three output ends, the other two output ends of the main transformer 11 are connected with the output rectifying plate 8, the input end of the main transformer 11 is connected with the inversion main board 10, two connection ports of the high-frequency absorption plate 13 are respectively connected with the positive output terminal and the negative output terminal, the high-frequency absorption plate 13 is grounded, the input end of the high-frequency doubling pressure plate 20 is inserted into the two ends of the input end of the main transformer 11 in a shell connection manner, the control end of the high-frequency doubling pressure plate 20 is connected with; the inversion main board 10 is connected with the control board 22 by a wire harness, and the control board 22 is connected with the terminal wire harness of the power supply junction box 17 on the front panel 15.

A machine foot 7 is respectively arranged at the four lower corners of the horizontal panel of the bottom plate 4, a fan mesh enclosure 6 is embedded at the lower part of the vertical panel of the bottom plate 4, and the fan mesh enclosure 6 is over against the fan 5; the top of the housing 2 is provided with a handle 1, and the front panel 15 above the control terminal table 18 is provided with a plurality of LED lamps 19.

As shown in fig. 2 to 10, the main loop circuit of the inverter main board 10 includes a relay J3, a DC + input pad J8, and a DC-input pad J9, the relay J3 is of a type HF105F-1, the first port of the relay J3 is divided into two paths and is respectively connected with a 27V network and the cathode of a diode D6, the anode of the diode D6 is divided into two paths and is respectively connected with the C port of a triode Q1 and the second port of the relay J3, the B port of a triode Q1 is connected with one end of a resistor R140, the other end of the resistor R140 is connected with the anode of a Zener diode Z1, the cathode of the Zener diode Z1 is divided into three paths and is respectively connected with one end of a resistor R7, the fourth port of a photocoupler controlled end U36B and one end of a capacitor C9, the other end of the resistor R7 is connected with the 27V network, and the other end of the capacitor C9 is divided into three paths and is respectively connected with the third port of a photocoupler U36B, the E; the DC + input pad J8 is divided into four paths, and is respectively connected with one end of a resistor R14, one end of a resistor R26, an A pole port of a thyristor T6 and one end of a switch 43, the other end of the resistor R14 is divided into two paths and is respectively connected with a B pole port of a triode Q6 and one end of a resistor R22, the other end of the resistor R26 is divided into two paths and is respectively connected with one end of a resistor R27 and a first pole port of a photocoupler U36A, a second pole port of the U36A is connected with one end of a resistor R24, the other end of the resistor R24 is connected with a C pole port of a triode Q6, and an E pole port of the triode Q6 is connected with a cathode of a zener; the other end of the resistor R27 is connected with a G pole port of a thyristor T6, a K pole port of the thyristor T6 is connected with one end of a thermistor RT1, the other end of the thermistor RT1 is divided into nine paths and is respectively connected with the other end of a switch 43, one end of a capacitor C11, one end of a capacitor C18, one end of a capacitor C45, one end of a resistor R30, one end of a capacitor C33, a first port of an IGBTT1, a DC + network and a first port of the IGBTT2, the other end of the resistor R30 is connected with one end of the resistor R30, a second port of the IGBTT 30 is connected with the G30 network, a third port of the IGBTT 30 is divided into three paths and is respectively connected with an OUTA network, an output pad J30 and the first port of the IGBTT 30, a second port of the IGBTT 30 is connected with the G30 network, a second port of the IGBTT 30 is connected with a pad J30 network, a third port of the IGBTT 30 and a port of the third port of the IGBTT 72, a third port of the IGBTT 30, a third port of the IGBTT 72, a third port of the IGBTT 30 is, the fourth port of the mutual inductor T8 is connected with the first port of the needle seat CT, the second port of the IGBTT10 is connected with a G4 network, the third port of the IGBTT10 is connected with a DC-network, the third port of the IGBTT3, the other end of the capacitor C33, the other end of the resistor R28, the other end of the capacitor C45, the other end of the capacitor C18, the other end of the capacitor C11, the anode of the zener diode Z2, the other end of the resistor R22 and the DC-input pad J9 in ten ways.

The driving circuit of the inverter main board 10 comprises a chip U2 and a chip U3, wherein the model of the chip U2 and the model of the chip U3 are TC4420, a first port and an eighth port of the chip U2 are respectively connected with one end of a capacitor C43, the first port and the eighth port of a chip U3, one end of a resistor R114, one end of a capacitor C36, the cathode of a diode D8 and the cathode of a diode D7 in six ways, the other end of the resistor R114 is connected with a 15V network, the other end of the capacitor C36 is grounded, and the other end of a capacitor C43 is grounded; the second port and the third port of the chip U2 are merged and then are divided into two paths to be respectively connected with the AOUT network and one end of a resistor R54, and the other end of the resistor R54 is grounded; the fourth port and the fifth port of the chip U2 are grounded, the sixth port and the seventh port of the chip U2 are divided into three paths and are respectively connected with the anode of the diode D7, the cathode of the diode D39 and one end of the resistor R67, the other end of the diode D39 is grounded, and the other end of the resistor R67 is connected with the first port of the driving transformer TR 1; the second port and the third port of the chip U3 are respectively connected with the BOUT network and one end of a resistor R55 in two ways, and the other end of the resistor R55 is grounded; the fourth port and the fifth port of the chip U3 are grounded, the sixth port and the seventh port of the chip U3 are divided into three paths and are respectively connected with the anode of a diode D8, the cathode of a diode D9 and one end of a resistor R68, the anode of a diode D9 is grounded, the other end of the resistor R68 is connected with the second port of a driving transformer TR1, the third port of the driving transformer TR1 is divided into two paths and is respectively connected with one end of a resistor R71 and the anode of a diode D40, the other end of a resistor R71 is connected with one end of a resistor R139, the other end of the resistor R139 is connected with the B port of a triode Q7, the E terminal port of the triode Q7 is divided into two paths and is respectively connected with the cathode of a diode D40 and one end of a resistor R75, the other end of the resistor R75 is divided into three paths and is respectively connected with the cathode of a voltage stabilizing diode Z4, one end of a resistor R113 and a G1 network, the other end of the fourth port of the driving transformer TR1 is respectively connected, the seven port of the driving transformer TR1 is divided into two paths to be respectively connected with one end of a resistor R72 and the anode of a diode D42, the other end of a resistor R72 is connected with one end of a resistor R137, the other end of the resistor R137 is connected with the B port of a triode Q8, the E port of a triode Q8 is divided into two paths to be respectively connected with the cathode of a diode D42 and one end of a resistor R76, the other end of a resistor R76 is divided into three paths to be respectively connected with the cathode of a voltage stabilizing diode Z10, one end of a resistor R118 and a G2 network, the other end of the resistor R118 is divided into four paths to be respectively connected with an OUTB network, the anode of a voltage stabilizing diode Z10, the C port of a triode Q8 and the eighth port of a driving transformer TR1, the five port of the driving transformer TR1 is divided into four paths to be respectively connected with the C port of a triode Q9, the anode of a voltage stabilizing diode Z11, one end of a resistor R136 and a, The other end of the resistor R80 is divided into two paths and is respectively connected with an E pole port of a voltage stabilizing triode Q9 and a cathode of a diode D44, a B pole port of a triode Q9 is connected with one end of a resistor R117, the other end of the resistor R117 is connected with one end of a resistor R73, the other end of the resistor R73 is divided into two paths and is respectively connected with an anode of a diode D44 and a sixth port of a driving transformer TR1, a ninth port of the driving transformer TR1 is divided into four paths and is respectively connected with a C pole port of a triode Q10, an anode of a voltage stabilizing diode Z12, one end of a resistor R138 and a DC-network, the other end of the resistor R138 is divided into three paths and is respectively connected with a cathode of a voltage stabilizing diode Z12, a G3 network and one end of a resistor R81, the other end of the resistor R81 is divided into two paths and is respectively connected with an E pole port of a voltage stabilizing triode Q10 and a cathode of a diode D42, a B pole port of a triode Q39 10 is connected, the other end of the resistor R74 is connected with the anode of the diode D43 and the No. ten port of the driving transformer TR1 in two paths respectively.

The secondary power supply circuit of the inverter mainboard 10 comprises a chip U4, wherein the model of the chip U4 is UC3843, a fifth port of the chip U4 is grounded, a second port of the chip U4 is divided into four paths to be respectively connected with one end of a capacitor C55, one end of a capacitor C56, one end of a resistor R141 and one end of a controlled end U37B of a photoelectric coupler, a V port at the other end of the U37B, the other end of the capacitor C55 is divided into two paths to be respectively connected with the other end of the resistor R141 and the ground, the other end of the capacitor C56 is divided into two paths to be respectively connected with a first port of the chip U4 and an anode of a diode D36, a cathode of the diode D36 is divided into two paths to be respectively connected with one end of the resistor R66 and one end of the capacitor C41, the other end of the capacitor C41 is grounded, the other end of the resistor R5 is connected with an eighth port of the chip U4, a fourth port of the chip U6324 is divided into two paths to be respectively connected with one end of the capacitor C65 and one end of the capacitor, the other end of the capacitor C66 is grounded, the third port of the chip U4 is divided into two paths and is respectively connected with one end of the resistor R143 and one end of the capacitor C54, the other end of the capacitor C54 is grounded, the other end of the resistor R143 is connected with the CFB2 network, the seventh port of the chip U4 is divided into two paths and is respectively connected with the V port and one end of the capacitor C52, the other end of the capacitor C52 is grounded, the sixth port of the chip U4 is connected with one end of the resistor R145, the other end of the resistor R145 is divided into two paths and is respectively connected with the cathode of the zener diode Z9 and the G-pole port of the FET T11, the anode of the zener diode Z9 is divided into four paths and is respectively connected with one end of the resistor R47, one end of the resistor R146, one end of the resistor R147 and the S-pole port of the FET T38, the other end of the resistor R47 is divided into three paths and is respectively connected with the other end of the resistor R146, the other end of the resistor R147, the cathode of the diode D35 is divided into two paths and is respectively connected with one end of a resistor R37 and one end of a capacitor C16, the other end of a resistor R37 is divided into four paths and is respectively connected with the other end of the capacitor C16, the twelve port of a secondary power transformer TR2, a VDD network and one end of a capacitor C46, the other end of the capacitor C46 is grounded, the eight port of a secondary power transformer TR2 is grounded, the seven port of the secondary power transformer TR2 is connected with the anode of a diode D34, the cathode of the diode D34 is divided into two paths and is respectively connected with one end and the V port of a capacitor C67, the other end of a capacitor C67 is grounded, the six port of a secondary power transformer TR2 is connected with the anode of a diode D27, the cathode of the diode D27 is divided into two paths and is respectively connected with the anodes of the capacitor C39, the capacitor C19, the first port of an HF1 needle bed and the anode of a diode D32, the cathode of the diode D32 is connected with the anode of the diode D36, the other end of the capacitor C39 is divided into four paths and is respectively connected with a fifth port of a secondary power transformer TR2, the other port of the capacitor C19, a second port of a needle seat HF1 and the ground, a second port of a secondary power transformer TR2 is connected with the cathode of a diode D28, the anode of the diode D28 is divided into three paths and is respectively connected with one end of a capacitor C38, one end of a capacitor C42 and a second port of a needle seat FAN1, a first port of a FAN1 is grounded, the other end of a capacitor C38 is divided into six paths and is respectively connected with a third port of a secondary power transformer TR2, one end of a capacitor C29, one end of a capacitor C30, the other end of a capacitor C42, one end of a resistor R45 and the ground, the other end of the capacitor C29 is divided into four paths and is respectively connected with the cathode of a diode D29, the cathode of a voltage stabilizing diode Z599, the other end of a capacitor C30 and the other end of a resistor R82; the anode of the Zener diode Z7 is connected with the cathode of the Zener diode Z8, the anode of the Zener diode Z8 is connected with one end of a resistor R48, the other end of the resistor R48 is divided into two paths to be respectively connected with one end of a resistor R49 and a first port of a photoelectric coupler control end U37A, and the other end of the resistor R49 is divided into two paths to be respectively connected with a second port of the U37A and the ground; the V port is connected with one end of a resistor R144, the other end of the resistor R144 is connected with one end of a resistor R65, the other end of a resistor R65 is connected with one end of a resistor R64, the other end of the resistor R64 is divided into three paths to be respectively connected with a VDD network, one end of a capacitor C37 and one end of a resistor R31, the other end of the resistor R31 is connected with a cathode of a diode D33, an anode of the diode D33 is connected with a DC + network, the other end of the capacitor C37 is divided into two paths to be respectively connected with one end of a TS-switch and the ground, and the other end of the.

The circuit of the output rectifying board 8 further comprises an input pad J18, an input pad J17 and an output pad J19, wherein J18 is divided into four paths which are respectively connected with one end of a resistor R148, one end of a resistor R152, the anode of a fast recovery diode D44 and the anode of a fast recovery diode D45, the other end of the resistor R148 is divided into three paths which are respectively connected with the other end of the resistor R152, one end of a resistor R153 and one end of a resistor R149, the other end of the resistor R153 is divided into two paths which are respectively connected with the other end of the resistor R149 and one end of a capacitor C68, the other end of the capacitor C68 is divided into thirteen paths which are respectively connected with the cathode of a fast recovery diode D44, the cathode of a fast recovery diode D45, the cathode of a fast recovery diode D46, the cathode of a fast recovery diode D47, the output pads J14, J21, J16, J15, J23, J24, one end of a terminal of a capacitor C69, a second port of an output pad J22 and one end of a shunt row F69553 and a shunt row F86, the other end of the capacitor C69 is divided into two paths to be respectively connected with one end of the resistor R151 and one end of the resistor R155, the other end of the resistor R151 is divided into three paths to be respectively connected with the other end of the resistor R155, one end of the resistor R150 and one end of the resistor R154, and the other end of the resistor R150 is divided into four paths to be respectively connected with the other end of the resistor R154, the anode of the fast recovery diode D46, the anode of the fast recovery diode D47 and the input pad J17.

The circuit of the high-frequency voltage doubling plate 20 comprises a needle seat J5, a needle seat J6, a needle seat J7 and a relay J20, wherein the model of the relay J20 is SZ-S-124DM, a first port of the needle seat J5 is connected with one end of a resistor R60, the other end of the resistor R60 is connected with the anode of a diode D18, one end of a capacitor C15, one end of a capacitor C28, one end of a capacitor C63, one end of a resistor R62, a K-pole port of a thyristor T17, the anode of a diode D25 and one end of a resistor R100 in eight ways respectively, the other end of the capacitor C28 is connected with the first port of the needle seat J28 and one end of the resistor R28 in two ways respectively, the other end of the resistor R28 is connected with one end of the capacitor C28, the cathode of the diode D28 is connected with the cathode of the diode D28 and one end of the capacitor C28 in three ways respectively, the other end of the capacitor C21 is divided into three paths and is respectively connected with the anode of the diode D20, the cathode of the diode D18 and one end of the capacitor C14, and the other end of the capacitor C14 is connected with the second port of the needle seat J5 after being connected with the switch; the other end of the capacitor C63 is connected with one end of a resistor R104, the other end of the resistor R104 is connected with one end of an inductor L4, the other end of the inductor L4 is divided into two paths and is respectively connected with one end of a resistor R111 and one end of a resistor R63, the other end of the resistor R63 is connected with a bidirectional trigger diode V1, the other end of the bidirectional trigger diode V1 is divided into two paths and is respectively connected with the other end of the resistor R62 and a G pole port of a thyristor T17, and an A pole port of the thyristor T17 is divided into four paths and is respectively connected with the other end of the resistor R100, a cathode of a diode D25, the other end of the resistor R111; the first port of the needle seat J6 is connected with the cathode of the diode D26 and one end of the relay J20 respectively, and the anode of the diode D26 and the other end of the relay J20 are combined and connected with the second port of the needle seat J6.

The circuit of the high-frequency absorption plate 13 comprises an input pad J1, an input pad J2 and a support post J4, wherein the input pad J1 is divided into four paths to be respectively connected with one end of a capacitor C4, one end of a capacitor C1, one end of a resistor R2 and the anode of a diode D5, the cathode of the diode D5 is divided into two paths to be respectively connected with one end of a resistor R4 and one end of a capacitor C2, the other end of the capacitor C2 is divided into five paths to be respectively connected with the other end of a resistor R4, the other end of a resistor R2, the other end of a capacitor C1, one end of a capacitor C6 and the input pad J2, and the other end of a capacitor C6 is divided into two paths to be respectively connected.

The circuit of the control board 22 comprises a single chip microcomputer U10, a chip U6, a needle seat J10, a needle seat J28 and a needle seat J29, the model of the single chip microcomputer U10 is MB95F698, the model of the chip U6 is 7805, a fifteen-port of the single chip microcomputer U10 is divided into two paths to be respectively connected with one end of a resistor R53 and a second port of a needle seat DBG, the other end of the resistor R53 is connected with a 5V port, a first port of the needle seat DBG is connected with the 5V port, and a third port of the needle seat DBG is grounded; the 5V port is divided into five paths and is respectively connected with one end of a capacitor C48, one end of a resistor R50, one end of a needle seat PULSE, one end of a resistor R115 and one end of a resistor R116, the other end of the resistor R115 is divided into four paths and is respectively connected with a thirty-nine port of a singlechip U10, a cathode of a voltage stabilizing diode Z42, one end of a capacitor C90 and a first port of a needle seat OT1, the other end of the capacitor C90 is divided into three paths and is respectively connected with an anode of a voltage stabilizing diode Z42, a second port of the needle seat OT1 and the ground, the other end of the resistor R116 is divided into four paths and is respectively connected with a first port of a needle seat OT2, a cathode of a voltage stabilizing diode Z43, one end of a capacitor C89 and a fifth port of a singlechip U10, and the other end of a capacitor C89 is divided into three paths and is respectively connected with a; the other end of the capacitor C48 is grounded, the other end of the resistor R50 is respectively connected with a forty-five port of the singlechip U10 and one end of the capacitor C51, the other end of the capacitor C51 is grounded, the second port of the needle seat PULSE is divided into two paths and is respectively connected with a forty-three port of the singlechip U10 and one end of the resistor R51, and the other end of the resistor R51 is grounded; the first port of the needle seat J10 is divided into two paths to be connected with a VCC power supply port and the cathode of the diode D23 respectively, the anode of the diode D23 is divided into five paths to be connected with the third port of the needle seat J10, the cathode of the diode D24, the ninth port of the operational amplifier U5C, one end of the resistor R39 and one end of the resistor R56 respectively, the other end of the resistor R39 is divided into three paths to be connected with one end of the resistor R40, one end of the capacitor C31 and one end of the resistor R41 respectively, the other end of the resistor R41 is divided into two paths to be connected with the forty-two ports of the singlechip U10 and one end of the capacitor C32 respectively, and the other end of the capacitor C32 is divided into three paths to be connected with the other end of; the anode of the diode D24 is divided into two paths to be connected with a VCC negative power supply port and a second port of the needle seat J10 respectively, a fourth port of the needle seat J10 is grounded, a tenth port of the operational amplifier U5C is divided into three paths to be connected with one end of a resistor R133, one end of a capacitor C113 and one end of a resistor R132 respectively, the other end of the resistor R132 is connected with the VCC power supply port, and the other end of the capacitor C113 is divided into two paths to be connected with the other end of the resistor R133 and grounded respectively; the eighth port of the operational amplifier U5C is connected with the anode of the diode D37, the cathode of the diode D37 is respectively connected with one end of the resistor R161 and the G-pole port of the NMOS tube T5, and the other end of the resistor R161 is grounded; the S pole port of the NMOS tube T5 is divided into three paths, and is respectively connected with one end of a resistor R8, the ground and a third port of a chip U1, the model of the chip U1 is UC3846, the D pole port of the NMOS tube T5 is connected with one end of a resistor R162, and the other end of the resistor R162 is respectively connected with the other end of a resistor R8 and a ninth port of a chip U1; the other end of the resistor R56 is respectively connected with one end of a resistor R29, the anode of a voltage stabilizing diode VD1, the second port of the amplifier U5A, the cathode of a diode D10, the anode of a diode D11, one ends of a resistor R32 and a resistor R46, one end of a capacitor C27, the other end of a capacitor C27 is respectively connected with the other end of a resistor R46 and one end of a resistor R38, the other end of a resistor R38 is connected with the anode of a diode D31, the cathode of a diode D31 is respectively connected with the other end of a resistor R32, the seventh port of an amplifier U5B and one end of a resistor R34, the fifth port of an amplifier U5B is grounded, the sixth port of an amplifier U5B is respectively connected with one end of a resistor R23, the other end of a resistor R34 and one end of a resistor R20, the other end of a resistor R20 is, a third port of the variable resistor VR3 is connected with a VCC power supply port, and a first port of the variable resistor VR3 is connected with a second port of the needle base Driver; the other end of the resistor R23 is connected with a second port of the variable resistor VR2, a first port of the variable resistor VR2 is grounded, a third port of the variable resistor VR2 is respectively connected with thirteen and fourteen ports of the amplifier U5D, a twelfth port of the amplifier U5D is respectively connected with one end of the resistor R13 and one end of the capacitor C26, and the other end of the capacitor C26 is respectively connected with one end of the resistor R11 and the ground; the other ends of the resistor R11 and the resistor R13 are connected with a thirty-one port of the singlechip U10 in a combined manner; the third port of the amplifier U5A is connected with the anode of the diode D10, the cathode of the diode D11 and the ground respectively; a first port of the amplifier U5A is connected with a cathode of a voltage-stabilizing diode VD1, one end of a resistor R36 and one end of a capacitor C23 respectively, the other end of the capacitor C23 is connected with the other end of a resistor R29, the other end of the resistor R36 is divided into four paths and is connected with a cathode of a diode D12, one end of a capacitor C24, one end of a resistor R33, one end of a resistor R42 and one end of a resistor R19 respectively, an anode of the diode D12, the other end of the capacitor C24 and the other end of the resistor R33 are grounded respectively, the other end of the resistor R42 is connected with a C-pole port of a triode Q5, an E-pole port of the triode Q5 is grounded, a B-pole port of the triode Q5 is connected with one end of a resistor R18, and the other; the other end of the resistor R19 is divided into two paths and is respectively connected with one end of a capacitor C13 and a fifth port of a chip U1, the other end of the capacitor C13 is grounded, a twelfth port of the chip U1 is grounded, a thirteenth port of the chip U1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with a VCC power supply port, a second port of the chip U1 is connected with a VREF network, a fourth port of the chip U1 is divided into five paths and is respectively connected with one end of a capacitor C93, one end of a resistor R9, one end of a resistor R15, one end of a resistor R119 and one end of a resistor R16, the other end of the resistor R9 is grounded, the other end of a resistor R16 is connected with a CT network, the other end of the resistor R119 is connected with one end of a capacitor C92, the other end of the capacitor C92 is divided into three paths and is respectively connected with the other end of a resistor R15, the other end of a capacitor C93 and an E pole port of a, One end of the capacitor C12 and an eighth port of the chip U1, and the other end of the capacitor C10 is divided into two paths to be respectively connected with the other end of the capacitor C12 and the ground; the fourteen port of the chip U1 is connected with the fifth port of the Driver and the anode of the diode D14, the eleventh port of the chip U1 is connected with the fourth port of the Driver and the anode of the diode D15, the cathodes of the diode D14 and the diode D15 are connected with one end of the resistor R122 and one end of the capacitor C108, the other end of the resistor R122 is grounded, the other end of the capacitor C108 is connected with one end of the resistor R123 and the G pole of the NMOS tube T4, the other end of the resistor R123 is grounded, the S pole of the NMOS tube T4 is grounded, the D pole of the NMOS tube T4 is connected with one end of the resistor R121, the third port of the amplifier U30A and one end of the capacitor C107, the other end of the capacitor C107 is grounded, the other end of the resistor R121 is connected with one end of the capacitor C105 and one end of the resistor R120, the other end of the resistor R120 is grounded, the other end of the capacitor C105 is connected with the cathode of the diodes D2 and D3, the cathode of, One end of the R17, the other end of the R17 is connected with one end of a capacitor C17 and the CT network respectively, the other end of the capacitor C17 is grounded, the anode of the diode D2 is connected with the first port of the pin seat HGQ and the cathode of the diode D1 respectively, the anode of the diode D3 is connected with the second port of the pin seat HGQ and the cathode of the diode D4 respectively, and the anode of the diode D1, the anode of the diode D4 and the other end of the resistor R6 are grounded in a combined manner; the other end of the resistor R3 is respectively connected with one end of a capacitor C5, one end of a resistor R5, a sixteen-numbered port of a chip U1, one end of a resistor R129, one end of a resistor R127 and the cathode of a diode D13, the anode of a diode D13 is connected with one end of a resistor R21, and the other end of the resistor R21 is connected with a 47-numbered port of a singlechip U10; the other ends of the capacitor C5 and the resistor R5 are grounded; the other end of the resistor R129 is connected with the cathode of the diode D17, the anode of the diode D17 is respectively connected with the seventh port of the amplifier U30B and one end of the resistor R128, and the other end of the resistor R128 is connected with a VCC power supply end; a fifth port of the amplifier U30B is connected with a VREF network, a sixth port of the amplifier U30B is respectively connected with one end of a resistor R96, one end of a capacitor C44 and one end of a resistor R87, the other end of a resistor R87 is connected with a VCC power supply end, and the other end of a resistor R96 and the other end of the capacitor C44 are combined and grounded; the other end of the resistor R127 is connected with the cathode of the diode D16, the anode of the diode D16 is respectively connected with the first port of the amplifier U30A and one end of the resistor R126, the other end of the resistor R126 is connected with a VCC power supply end, the second port of the amplifier U30A is respectively connected with one ends of the resistor R124 and the resistor R125 and one end of the capacitor C109, the other ends of the resistor R124 and the capacitor C109 are grounded, and the other end of the resistor R125 is connected with the VCC power supply end; a first port of a chip U6 is connected with a VCC power supply end and one end of a capacitor C49 respectively, the model of the chip U6 is 7805, the other end of the capacitor C49 is connected with a second port of the chip U6, one end of a capacitor C50, the cathode of a light-emitting diode LED1 and the ground, the anode of the light-emitting diode LED1 is connected with one end of a resistor R52, and the other end of the resistor R52 and the other end of the capacitor C50 are connected with a third port of the chip U6 in a combined manner; the thirty-third port of the single chip microcomputer U10 is connected with one end of a resistor R166, the other end of the resistor R166 is connected with the G pole end of an NMOS tube T9, the D pole end of the NMOS tube T9 is connected with an SS network, the S pole end of the NMOS tube T9 is connected with the fourth end of a controlled end U33B of a photoelectric coupler, and the third end of the controlled end U33B of the photoelectric coupler is grounded; a port 44 of the singlechip U10 is respectively connected with one end of a resistor R135, one end of a resistor R134, one end of a capacitor C91 and a port II of a photoelectric coupler controlled end U27, the other end of the resistor R135 is connected with a port B of a triode Q3, a port E of the triode Q3 is grounded, a port C of a triode Q3 is respectively connected with one end of a resistor R131 and a port I of a needle base Ready, the other end of the resistor R131 is connected with a 5V power supply end, and a port I of the needle base Ready is grounded; the other end of the resistor R134 is connected with a first port of the needle seat Aonormal, and a second port of the needle seat Aonormal is grounded; a first port of a controlled end U27 of the photoelectric coupler is respectively connected with the other end of a capacitor C91 and one end of a resistor R107, the other end of the resistor R107 is connected with a 5V power supply end, a third port of a controlled end U27 of the photoelectric coupler is connected with one end of a resistor R110, the other end of the resistor R110 is respectively connected with one end of a capacitor C100, one end of a resistor R109 and a B pole end of a triode Q16, and the other end of the capacitor C100, the other end of the resistor R109 and an E pole end of the triode Q16 are respectively grounded; the C pole terminal of the triode Q16 is respectively connected with the second port of the pin base 24VOUT1 and the anode of the diode D19, the first port of the pin base 24VOUT1, the cathode of the diode D19 and the fourth port of the controlled end U27 of the photoelectric coupler are combined with a 24V power supply end; the forty-first port of the singlechip U10 is respectively connected with the cathode of a zener diode Z3, one end of a capacitor C78 and one end of a resistor R89, the anode of the zener diode Z3 and the other end of the capacitor C78 are grounded, the other end of a resistor R89 is respectively connected with the thirty-seven port of the singlechip U10, one end of a capacitor C64, one end of a resistor R88 and one end of a resistor R86, the other end of a capacitor C64 and the other end of a resistor R88 are respectively grounded, the other end of a resistor R86 is respectively connected with the first port and the second port of an amplifier U A, the third port of the amplifier U32A is respectively connected with one end of a capacitor C58, one end of a resistor R85 and the fifth port of a photocoupler controlled end U17, the other end of a capacitor C58 and the other end of a resistor R85 are respectively grounded, the sixth port of a photocoupler controlled end U17 is connected with a power supply end, the first port of a photocoupler controlled end U36 17 is grounded, and the second port of a photocoupler U17 is, the other end of the resistor R57 is respectively connected with one end of a capacitor C57 and a first port of an amplifier U29A, the other end of the capacitor C57 is respectively connected with a fourth port of a controlled end U17 of the photoelectric coupler, one end of a resistor R77 and a second port of an amplifier U29A, the other end of the resistor R77 is grounded, a third port of the controlled end U17 of the photoelectric coupler is respectively connected with one end of a capacitor C96, one end of a resistor R108 and one end of a resistor R82, the other end of the capacitor C96 and the other end of the resistor R108 are respectively grounded, and the other end of the resistor R82 is respectively connected with one end of a resistor R163 and a first port of a needle seat VFB; the second port of the needle seat VFB is grounded; the other end of the resistor R163 is respectively connected with one end of the resistor R164, one end of the capacitor C114 and the cathode of the voltage stabilizing diode Z45, and the other end of the resistor R164 and the other end of the capacitor C114 are combined and grounded; the anode of the Zener diode Z45 is connected with the cathode of the Zener diode Z44, the anode of the Zener diode Z44 is respectively connected with one end of the resistor R165 and the first port of the controlled end U33A of the photoelectric coupler, and the second port of the controlled end U33A of the photoelectric coupler and the other end of the resistor R165 are combined and grounded; the second port of the needle seat J28 is grounded, the first port of J28 is respectively connected with one end of a capacitor C35 and the second port of a photoelectric coupler controlled end U12, the other end of the capacitor C35 is respectively connected with the first port of a photoelectric coupler controlled end U12 and one end of a resistor R43, the other end of the resistor R43 is connected with a 24V power supply end, the four port of the photoelectric coupler controlled end U12 is connected with a 5V power supply end, the three ports of the photoelectric coupler controlled end U12 are respectively connected with the forty-six port of the singlechip U10, one end of a capacitor C40 and one end of a resistor R44, and the other end of the capacitor C40 and the other end of the resistor R44 are grounded in a combined mode; a first port of the needle seat J29 is connected with one end of a resistor R83, the other end of the resistor R83 is respectively connected with one end of a resistor R84, one end of a capacitor C97 and a third port of an amplifier U34A, the other end of the resistor R84 and the other end of the capacitor C97 are respectively grounded, a second port of the amplifier U34A is respectively connected with one end of a resistor R78, one end of the capacitor C59 and a fourth port of a photoelectric coupler controlled end U18, and the other end of the resistor R78 is grounded; a first port of the amplifier U34A is connected with the other end of the capacitor C59, one end of the resistor R58 and the other end of the resistor R58 respectively and is connected with a second port of a controlled end U18 of the photoelectric coupler, a first port of the controlled end U18 of the photoelectric coupler is grounded, and a third port of the controlled end U18 of the photoelectric coupler is connected with a 24V power supply end; a sixth port of a controlled end U18 of the photoelectric coupler is connected with a VCC power supply end; a fifth port of a controlled end U18 of the photoelectric coupler is respectively connected with one end of a resistor R94, one end of a capacitor C60 and a third port of an amplifier U35A, the other end of the resistor R94 and the other end of the capacitor C60 are respectively grounded, a first port and a second port of the amplifier U35A are combined and connected with one end of a resistor R95, the other end of the resistor R95 is respectively connected with a fourth port of a singlechip U10, one end of the resistor R70, one end of a capacitor C81 and a cathode of a voltage stabilizing diode Z6, the other end of the capacitor C81 and an anode of the voltage stabilizing diode Z6 are combined and grounded, and the other end of the resistor R70 is grounded; a second port of the needle seat J29 is connected with one end of a resistor R105, the other end of the resistor R105 is respectively connected with one end of a resistor R106, one end of a capacitor C98 and a fifth port of an amplifier U34B, the other end of the resistor R106 and the other end of the capacitor C98 are respectively grounded, a sixth port of the amplifier U34B is respectively connected with one end of a resistor R79, one end of a capacitor C61 and a fourth port of a controlled end U19 of a photoelectric coupler, and the other end of the resistor R79 is grounded; a first port of the amplifier U34B is connected with the other end of the capacitor C61, one end of the resistor R59 and the other end of the resistor R59 respectively and is connected with a second port of a controlled end U19 of the photoelectric coupler, a first port of the controlled end U19 of the photoelectric coupler is grounded, and a third port of the controlled end U19 of the photoelectric coupler is connected with a 24V power supply end; a sixth port of a controlled end U19 of the photoelectric coupler is connected with a VCC power supply end; a fifth port of a controlled end U19 of the photoelectric coupler is respectively connected with one end of a resistor R101, one end of a capacitor C62 and a fifth port of an amplifier U35B, the other end of the resistor R101 and the other end of the capacitor C62 are respectively grounded, a sixth port and a seventh port of the amplifier U35B are combined and connected with one end of a resistor R103, the other end of the resistor R103 is respectively connected with a thirty-eight port of a singlechip U10, one end of a resistor R69, one end of a capacitor C80 and a cathode of a zener diode Z5, the other end of the capacitor C80 and an anode of the zener diode Z5 are combined and grounded, and the other end of the resistor R69 is grounded; the third port of the needle seat J29 is connected with the C pole end of the triode Q4, the E pole end of the triode Q4 is grounded, the B pole end of the triode Q4 is connected with one end of the resistor R35, the other end of the resistor R35 is respectively connected with one end of the capacitor C86 and the resistor R99, the third port of the controlled end U25 of the photoelectric coupler, and the other ends of the capacitor C86 and the resistor R99 are grounded in a combined mode; a fourth port of a controlled end U25 of the photoelectric coupler is connected with a 24V power supply end, a second port of a controlled end U25 of the photoelectric coupler is grounded, a first port of a controlled end U25 of the photoelectric coupler is connected with one end of a circuit R93, and the other end of the circuit R93 is connected with a thirty-six port of a single chip microcomputer U10; a ninth port of the singlechip U10 is connected with one end of a resistor R98, the other end of the resistor R98 is connected with a first port of a controlled end U26 of the photoelectric coupler, a second port of the controlled end U26 of the photoelectric coupler is grounded, a third port of the controlled end U26 of the photoelectric coupler is respectively connected with one end of a capacitor C94, one end of a resistor R102, the ground and an S pole end of an NMOS tube T7, and a D pole end of the NMOS tube T7 is respectively connected with an anode of a diode D38 and a second port of a needle base FZNJ; a first port of the needle base ZNFJ is connected with a cathode of a diode D38, a power supply end of 24V and one end of a resistor R97 respectively, and the other end of the resistor R97 is connected with the other end of a resistor R102, a G pole end of an NMOS tube T7, the other end of a capacitor C94 and a fourth port of a controlled end U26 of a photoelectric coupler respectively; the eight port of the singlechip U10 is connected with one end of a resistor R92, the other end of the resistor R92 is connected with the first port of a controlled end U24 of a photoelectric coupler, the second port of the controlled end U24 of the photoelectric coupler is grounded, the third port of the controlled end U24 of the photoelectric coupler is connected with one end of a resistor R91, the other end of the resistor R91 is respectively connected with one end of a capacitor C85, one end of a resistor R90 and the B pole of a triode Q15, the other end of the capacitor C85 and the other end of the resistor R90 are respectively grounded, the E pole of the triode Q15 is grounded, the C pole of the triode Q15 is connected with the first port of a needle seat HF, the second port of the needle seat HF is grounded, and the third port of the needle seat HF is connected; a fourth port of the controlled end U24 of the photoelectric coupler is connected with a 24V power supply end; the first port of the pin socket POWER is connected with one end of a resistor R130, and the other end of the resistor R130 is connected with a VCC POWER supply end; the second port of the needle base POWER is grounded; u24, U25 and U26 are photocouplers with the model number of EL817, U12 is a photocoupler with the model number of PC817, and U17, U18 and U19 are linear photocouplers with the model number of HCNR 200.

The utility model discloses a major constituent is by:

the front panel 15 mainly has: an output terminal 16; a power supply junction box 17 comprising three connectors for connecting 220V single-phase power and ground; the device also comprises a control terminal block 18 for connecting external machinery and an LED lamp 19 for displaying the running state of the device, which are respectively a state abnormity prompting lamp, a ready completion prompting lamp and a power-on prompting lamp.

The parts of the sheet metal parts of the rear panel and the bottom plate 4 are mainly a fan 5 and a fan mesh enclosure 6, and are used for assisting heat dissipation of heat dissipation devices in the machine. The bottom plate is also provided with a machine foot 7. The main transformer 11, the inversion mainboard 10, the output rectifying plate 8, the high-frequency inductor 14 and the high-frequency absorption plate 13 are all installed on the bottom plate and fixed.

The housing 2 is provided with a handle 1, and the side surface of the housing 2 is provided with a ventilation hole site.

The middle clapboard 3 is provided with a control panel 22, and a high-frequency pressure-multiplying plate 20 is arranged below the middle clapboard.

The circuit on the inversion mainboard 10 comprises an inversion main loop circuit, a secondary power supply circuit and a drive circuit. The inversion main loop comprises an overvoltage protection circuit, a soft start circuit and an IGBT inversion circuit. The overvoltage protection circuit is mainly composed of a piezoresistor, a voltage regulator tube, a photoelectric coupler and a plurality of chip resistors, as shown in fig. 3. The input voltage is detected through the voltage division of R3 and R4, the divided voltage is larger than the conducting voltage drop added by the triode Q2 and the voltage regulator tube Z2, the Q2 and the voltage regulator tube are conducted, most of the voltage is added on the voltage dependent resistor R5 and the voltage regulator tube Z2 by the input voltage, the voltage can be stabilized at a protection value due to the volt-ampere characteristics of the voltage dependent resistor Q and the voltage regulator tube U1, meanwhile, the potential of the Z1 is pulled low, the base voltage of the Q1 is lost, the relay is disconnected, and the relay is disconnected, so that a subsequent main loop is protected. As shown in fig. 3, after the switching power supply outputs low-voltage control power, the capacitor C1 is charged through R1, and when the charging voltage reaches the turn-on voltage of the voltage regulator tube Z1, the Q1 is turned on, and the relay D1 is pulled in to complete the start. Before the relay D1 is attracted, rectified mains supply is limited by the PTC resistor and then charges the main capacitors C2 and C3, and after the capacitors C2 and C3 are charged to a certain degree, the relay is attracted, and the main capacitors C2 and C3 are directly supplied with power through the relay D1. The specific soft start time is determined by a resistor R1 and a capacitor C1. IGBT inverter circuit, IGBT T1, T2, T3, T4. And switching is performed according to the received driving signal, and the rectified and filtered power is inverted into high-frequency power and then input to the input end of the main transformer 11. And the auxiliary power supply circuit converts the input large voltage into low voltage for the control loop through DC-DC conversion. Through a switching power supply transformer TR2, U43843 determines the duty ratio of the switching power supply transformer by receiving a feedback signal of one path of an output end, a control signal is input to T7 to control the switching of T7, and the output voltage is stabilized at the voltage value required by people. And the driving circuit receives the PWM signal transmitted by the control board 22 through J6, amplifies the power of the PWM signal through U2 and U3 TC4420, and converts the PWM signal into 4 paths of mutually isolated driving signals through a driving transformer TR1 to drive IGBTT1, T2, T3 and T4 on an inverter main loop.

The high-frequency absorbing plate 13 comprises a high-frequency absorbing circuit, the J1 of which is terminated with the anode output end of the welding machine, and the J2 of which is terminated at the joint of the main transformer 11 and the high-frequency inductor 14. The high-frequency absorption circuit absorbs various clutter signals generated during high-frequency arcing through a plurality of safety capacitors, piezoresistors and the like.

The high frequency voltage doubling plate 20 comprises a high frequency voltage doubling circuit, and is connected to the input end of the main transformer 11 through J4. Through the high-frequency voltage doubling circuit shown in fig. 7, after the inverted high-frequency alternating current is subjected to voltage doubling for multiple times, the high-voltage current is coupled to the high-frequency inductor 14 through the J6 of the high-frequency voltage doubling plate 20, and is used for high-frequency arc starting of argon arc welding.

The control board 22 mainly includes a feedback control circuit for controlling the output characteristics of the welding machine, a single chip circuit for realizing various functions, and a connection circuit connected to the control terminal of the front panel 18. The feedback control circuit receives a given signal of a pin 31 of the singlechip U10, the given signal passes through the U5D operational amplifier in-phase following output voltage, then the voltage division operation is carried out through the adjustable potentiometer VR2, and VR2 is an internal adjustable resistor and can adjust a given current to be matched with a given current value on a digital display. Then the signal is inputted to the input terminal of U5B through R23, and the signal inputted to the input terminal is also the signal dividing VCC and-VCC through the adjustable potentiometer VR3, and this signal is inputted to U5B through R20, which is a small current signal, and the minimum current can be adjusted by adjusting VR 3. The signal output by U5B is the final given signal. The hall sensor 12 senses the magnitude of the current on the positive output cable and feeds it back to the control board 22. After the U5A operational amplifier obtains the given signal and the feedback signal, the specific signal is output according to the transfer function. Under normal operating conditions, this signal enters pin No. 5 of U13846 after simple processing. U13846 determines the duty ratio of the PWM signal output from pin 11 or 14 based on the 5-pin signal. This PWM signal is transmitted to J6 of the inverter main board 4 through a Driver pin header, and becomes a drive signal. Finally, the purpose of controlling the output current is achieved. The control board 22 also includes various auxiliary function circuits, and the high-low level output from pin 47 of the single chip microcomputer U10 can control whether pin 11 or pin 14 of U13846 is output or not. When the pin 47 is set to high level by the internal program of the single chip microcomputer U10, the pin 11 and the pin 14 of the 3846U1 stop outputting the PWM signal, and the output is low level. Otherwise, pin 11,14 of 3846U1 will normally output the PWM signal. The control panel 22 of the thermal protection circuit is provided with 2 temperature detection circuits which respectively detect needle bases OT1 and OT2, the two temperature detections can be used independently or simultaneously, and the program thermal protection can be started as long as one temperature reaches a preset value. The thermistors connected to needle bases OT1 and OT2 are all thermistors with decreasing resistance as temperature increases. Taking the circuit of OT1 as an example, OT1 is connected with a thermistor, the thermistor and R115 form a voltage division circuit of 5v, when the temperature rises, the thermistor resistance decreases, the voltage divided by the voltage division circuit decreases, and the voltage signal enters a singlechip U10 after being filtered by C90. The single chip microcomputer U10 judges the temperature of the thermistor at the moment according to the received voltage signal. When the singlechip U10 judges that the temperature is too high, the pin 47 outputs high level. OT2 also has the same working principle. The pins 8 and 9 of the up-conversion circuit U13846 control two parameters of the maximum duty ratio and the frequency of the PWM signals output by the pins U111 and U14. In the case of the circuit shown in fig. 9, the capacitance parameter does not change, and the resistance parameter changes with the on/off of T5. The on-off of the T5 is determined by the U5C operational amplifier, the determining factor is the feedback voltage of the Hall current sensor 12 and the threshold voltage, the threshold voltage is set in advance, and when the actual current is smaller than a certain value, the T5 is conducted, so that the frequency of the PWM signal output by the U1 is increased.

The utility model provides an contravariant mainboard main circuit includes soft start, overvoltage protection, full-bridge inverter circuit. The soft start part consists of a charging capacitor, a relay, a PTC resistor, a thyristor, a voltage regulator tube, a plurality of resistors and a diode. The overvoltage protection circuit is composed of the soft start circuit, a divider resistor, a voltage dependent resistor, a photoelectric coupler, a voltage stabilizing tube and a triode. The full-bridge inverter circuit consists of 4 IGBTs, an energy storage capacitor, a CBB capacitor and a plurality of resistors.

The utility model provides a current regulation, frequency control, the electric current detects the signal and can be connected to external control ware through binding post and show and control.

The utility model provides a realize the welding function customization through the singlechip on the control panel. Functions include, but are not limited to, thermal protection, short circuit protection, pulse welding functions.

The utility model relates to a can carry on and weld the welding machine at the argon arc that can control outside machinery such as welding current and welding speed to there are two kinds of modes of direct current welding and pulse welding. Mode selection is connected to No. 7 and No. 8 interfaces of the control terminal block 18 through the PULSE needle seat, and mode judgment is carried out by detecting whether the two interfaces are short-circuited. The current regulating signal and the pulse frequency control signal are respectively controlled by interfaces No. 12 and No. 14 and are grounded by interfaces No. 11 and No. 19 of the terminal block 18. The current regulation signal is transmitted to a signal processing side circuit of the control panel 8 through a linear photoelectric coupler U18 by detecting the voltage signal of the control terminal block 12 interface and 11 interface ground, and the voltage signal output by U18 is transmitted to No. 40 pin of the singlechip U10 through a U35A operational amplifier voltage follower circuit. The single chip microcomputer U10 obtains the required output current according to the voltage and controls the output current. The pulse frequency signal is detected through detecting the voltage signal between the No. 14 interface and the No. 11 interface of the control terminal block 18, then the obtained voltage signal is transmitted to a signal processing side circuit of the control panel 8 through a linear photoelectric coupler U19, the voltage signal output by the U19 is transmitted to a No. 38 pin of the singlechip U10 through a voltage following circuit of a U35B operational amplifier, and the singlechip U10 determines the frequency of the output pulse signal according to the size of the received voltage signal. The interface 20 of the control terminal block 18 is transmitted after the signal given by the pin No. 1036 of the singlechip U is isolated by the photoelectric coupler U25. The single chip microcomputer U10 outputs a high level signal when detecting that the output current exists, otherwise, the signal is a low level signal. The voltage for a given signal to control the terminal block 18 is provided by the 24V signal output from the 31,32 interface. The single chip microcomputer U10 also needs to receive voltage signals of the positive and negative output ends, the voltage signals are directly detected through a VFB needle seat, as shown in FIG. 2, the obtained voltage signals are transmitted through a U17 linear photoelectric coupler, then the output of the U17 is followed through a U32A operational amplifier, the signals passing through R86 are fast-response voltage signals, and then the signals passing through R89 are slow-response voltage signals and are respectively transmitted to No. 37 and No. 41 pins of the single chip microcomputer U10. Meanwhile, as shown in fig. 9, the voltage signal input through the VFB is divided by two resistors R163 and R164 and then input to the series-connected voltage-regulator tubes Z44 and Z45, so that when the voltage signal received by the VFB can turn on the voltage-regulator tubes Z44 and Z45 and the photocoupler U33A, the photocoupler U33B is turned on, and at this time, if the single-chip microcomputer U10 turns on the T9 at the same time, the output no-load voltage is stabilized at a specific voltage. The control board 22 also detects the current magnitude at the input end of the main transformer 11. The obtained signals are rectified by D1, D2, D3 and D4 and then converted into voltage signals by R6 through detection of a mutual inductor T8 on the inversion main board 10, then the voltage signals are filtered by C17, and CT signals are obtained, wherein 3846 is turned off when the CT signals are larger than a certain value, so that the maximum input end current is limited through the circuit. And starting the protection circuit, dividing VCC by R87 and R96, wherein VCC reaches above a specified voltage, the operational amplifier U30 outputs a low level, 3846U1 formally starts to work, namely the main control circuit normally works after the auxiliary power supply part on the inversion mainboard 10 reaches a normal output voltage.

Claims

1. The utility model provides a can carry on argon arc welding machine on external machinery, includes the bottom plate, characterized by: the bottom plate (4) is L-shaped, the right side of the bottom plate (4) is provided with a front panel (15), the front panel (15) is sequentially provided with a positive and negative output terminal (16), a power supply junction box (17) and a control terminal table (18) from bottom to top, a horizontal panel of the bottom plate (4) between the vertical panels of the front panel (15) and the bottom plate (4) is sequentially provided with a fan (5), an output rectifier plate (8), a rectifier bridge (9), an inverter main board (10), a main transformer (11), a Hall sensor (12), a high-frequency absorption plate (13), a high-frequency pressure doubling plate (20) and a high-frequency inductor (14) from left to right, a middle partition plate (3) is arranged above the high-frequency inductor (14) and the fan (5), a control panel (22) is arranged above the middle partition plate (3), and a protective coil (21) is arranged on the middle partition plate (3) around, a cover shell (2) is covered above the bottom plate (4); the positive output electrode of the front panel (15) is connected with the output rectifying plate (8) through a cable, the negative output electrode of the front panel (15) is connected with one end of the high-frequency inductor (14), the other end of the high-frequency inductor (14) is connected with the center tap of the output end of the main transformer (11), the main transformer (11) is provided with three output ends, the other two output ends of the main transformer (11) are connected with the output rectifying plate (8), the input end of the main transformer (11) is connected with the inversion main board (10), two connecting ports of the high-frequency absorption board (13) are respectively connected with the anode output terminal and the cathode output terminal, the high-frequency absorption plate (13) is grounded, the input end of the high-frequency pressure doubling plate (20) is inserted into the shell and connected with the two ends of the input end of the main transformer (11), the control end of the high-frequency pressure doubling plate (20) is connected with the high-frequency control port of the control board (22), and the output end of the high-frequency pressure doubling plate (20) is connected with a lead coupled with the high-frequency inductor (14); the inversion main board (10) is connected with the control board (22) in a wiring harness connection mode, and the control board (22) is connected with a terminal wiring harness of a power supply junction box (17) on the front panel (15).

2. An argon arc welding machine capable of being carried on an external machine as claimed in claim 1, wherein: a machine leg (7) is arranged at each of four lower corners of the horizontal panel of the bottom plate (4), a fan mesh enclosure (6) is embedded at the lower part of the vertical panel of the bottom plate (4), and the fan mesh enclosure (6) is over against the fan (5); the top of the housing (2) is provided with a handle (1), and a plurality of LED lamps (19) are arranged on a front panel (15) above the control terminal table (18).

3. An argon arc welding machine capable of being carried on an external machine as claimed in claim 1, wherein: the main loop circuit of the inverter main board (10) comprises a relay J3, a DC + input pad J8 and a DC-input pad J9, the model of the relay J3 is HF105F-1, a first port of the relay J3 is divided into two paths to be respectively connected with a 27V network and the cathode of a diode D6, the anode of the diode D6 is divided into two paths to be respectively connected with the C-pole port of a triode Q1 and the second port of a relay J3, the B-pole port of the triode Q1 is connected with one end of a resistor R140, the other end of the resistor R140 is connected with the anode of a zener diode Z1, the cathode of the zener diode Z1 is divided into three paths to be respectively connected with one end of a resistor R7, the fourth-pole port of a photocoupler controlled end U36B and one end of a capacitor C9, the other end of a resistor R7 is connected with the 27V network, and the other end of the capacitor C9 is divided into three paths to be respectively connected with the third port of; the DC + input pad J8 is divided into four paths, and is respectively connected with one end of a resistor R14, one end of a resistor R26, an A pole port of a thyristor T6 and one end of a switch 43, the other end of the resistor R14 is divided into two paths and is respectively connected with a B pole port of a triode Q6 and one end of a resistor R22, the other end of the resistor R26 is divided into two paths and is respectively connected with one end of a resistor R27 and a first pole port of a photocoupler U36A, a second pole port of the U36A is connected with one end of a resistor R24, the other end of the resistor R24 is connected with a C pole port of a triode Q6, and an E pole port of the triode Q6 is connected with a cathode of a zener; the other end of the resistor R27 is connected with a G pole port of a thyristor T6, a K pole port of the thyristor T6 is connected with one end of a thermistor RT1, the other end of the thermistor RT1 is divided into nine paths and is respectively connected with the other end of a switch 43, one end of a capacitor C11, one end of a capacitor C18, one end of a capacitor C45, one end of a resistor R30, one end of a capacitor C33, a first port of an IGBTT1, a DC + network and a first port of the IGBTT2, the other end of the resistor R30 is connected with one end of the resistor R30, a second port of the IGBTT 30 is connected with the G30 network, a third port of the IGBTT 30 is divided into three paths and is respectively connected with an OUTA network, an output pad J30 and the first port of the IGBTT 30, a second port of the IGBTT 30 is connected with the G30 network, a second port of the IGBTT 30 is connected with a pad J30 network, a third port of the IGBTT 30 and a port of the third port of the IGBTT 72, a third port of the IGBTT 30, a third port of the IGBTT 72, a third port of the IGBTT 30 is, the fourth port of the mutual inductor T8 is connected with the first port of the needle seat CT, the second port of the IGBTT10 is connected with a G4 network, the third port of the IGBTT10 is connected with a DC-network, the third port of the IGBTT3, the other end of the capacitor C33, the other end of the resistor R28, the other end of the capacitor C45, the other end of the capacitor C18, the other end of the capacitor C11, the anode of the zener diode Z2, the other end of the resistor R22 and the DC-input pad J9 in ten ways.

4. An argon arc welding machine capable of being carried on an external machine as claimed in claim 1, wherein: the driving circuit of the inverter main board (10) comprises a chip U2 and a chip U3, wherein the models of the chips U2 and U3 are TC4420, a first port and an eighth port of the chip U2 are respectively connected with one end of a capacitor C43, the first port and the eighth port of a chip U3, one end of a resistor R114, one end of a capacitor C36, the cathode of a diode D8 and the cathode of a diode D7 in six ways, the other end of the resistor R114 is connected with a 15V network, the other end of the capacitor C36 is grounded, and the other end of the capacitor C43 is grounded; the second port and the third port of the chip U2 are merged and then are divided into two paths to be respectively connected with the AOUT network and one end of a resistor R54, and the other end of the resistor R54 is grounded; the fourth port and the fifth port of the chip U2 are grounded, the sixth port and the seventh port of the chip U2 are divided into three paths and are respectively connected with the anode of the diode D7, the cathode of the diode D39 and one end of the resistor R67, the other end of the diode D39 is grounded, and the other end of the resistor R67 is connected with the first port of the driving transformer TR 1; the second port and the third port of the chip U3 are respectively connected with the BOUT network and one end of a resistor R55 in two ways, and the other end of the resistor R55 is grounded; the fourth port and the fifth port of the chip U3 are grounded, the sixth port and the seventh port of the chip U3 are divided into three paths and are respectively connected with the anode of a diode D8, the cathode of a diode D9 and one end of a resistor R68, the anode of a diode D9 is grounded, the other end of the resistor R68 is connected with the second port of a driving transformer TR1, the third port of the driving transformer TR1 is divided into two paths and is respectively connected with one end of a resistor R71 and the anode of a diode D40, the other end of a resistor R71 is connected with one end of a resistor R139, the other end of the resistor R139 is connected with the B port of a triode Q7, the E terminal port of the triode Q7 is divided into two paths and is respectively connected with the cathode of a diode D40 and one end of a resistor R75, the other end of the resistor R75 is divided into three paths and is respectively connected with the cathode of a voltage stabilizing diode Z4, one end of a resistor R113 and a G1 network, the other end of the fourth port of the driving transformer TR1 is respectively connected, the seven port of the driving transformer TR1 is divided into two paths to be respectively connected with one end of a resistor R72 and the anode of a diode D42, the other end of a resistor R72 is connected with one end of a resistor R137, the other end of the resistor R137 is connected with the B port of a triode Q8, the E port of a triode Q8 is divided into two paths to be respectively connected with the cathode of a diode D42 and one end of a resistor R76, the other end of a resistor R76 is divided into three paths to be respectively connected with the cathode of a voltage stabilizing diode Z10, one end of a resistor R118 and a G2 network, the other end of the resistor R118 is divided into four paths to be respectively connected with an OUTB network, the anode of a voltage stabilizing diode Z10, the C port of a triode Q8 and the eighth port of a driving transformer TR1, the five port of the driving transformer TR1 is divided into four paths to be respectively connected with the C port of a triode Q9, the anode of a voltage stabilizing diode Z11, one end of a resistor R136 and a, The other end of the resistor R80 is divided into two paths and is respectively connected with an E pole port of a voltage stabilizing triode Q9 and a cathode of a diode D44, a B pole port of a triode Q9 is connected with one end of a resistor R117, the other end of the resistor R117 is connected with one end of a resistor R73, the other end of the resistor R73 is divided into two paths and is respectively connected with an anode of a diode D44 and a sixth port of a driving transformer TR1, a ninth port of the driving transformer TR1 is divided into four paths and is respectively connected with a C pole port of a triode Q10, an anode of a voltage stabilizing diode Z12, one end of a resistor R138 and a DC-network, the other end of the resistor R138 is divided into three paths and is respectively connected with a cathode of a voltage stabilizing diode Z12, a G3 network and one end of a resistor R81, the other end of the resistor R81 is divided into two paths and is respectively connected with an E pole port of a voltage stabilizing triode Q10 and a cathode of a diode D42, a B pole port of a triode Q39 10 is connected, the other end of the resistor R74 is connected with the anode of the diode D43 and the No. ten port of the driving transformer TR1 in two paths respectively.

5. An argon arc welding machine capable of being carried on an external machine as claimed in claim 1, wherein: the secondary power supply circuit of the inverter main board (10) comprises a chip U4, the model number of the chip U4 is UC3843, a fifth port of the chip U4 is grounded, a second port of the chip U4 is divided into four paths to be respectively connected with one end of a capacitor C55, one end of a capacitor C56, one end of a resistor R141 and one end of a controlled end U37B of a photoelectric coupler, a V port at the other end of a U37B, the other end of the capacitor C55 is divided into two paths to be respectively connected with the other end of the resistor R141 and grounded, the other end of the capacitor C56 is divided into two paths to be respectively connected with a first port of the chip U4 and an anode of a diode D36, a cathode of a diode D36 is divided into two paths to be respectively connected with one end of a resistor R66 and one end of a capacitor C41, the other end of the capacitor C41 is grounded, the other end of the resistor R66 is connected with an eighth port of the chip U4, a fourth port of the chip U4 is divided into two paths to be respectively connected with one end of a capacitor C65 and one end of the resistor, the other end of the capacitor C66 is grounded, the third port of the chip U4 is divided into two paths and is respectively connected with one end of the resistor R143 and one end of the capacitor C54, the other end of the capacitor C54 is grounded, the other end of the resistor R143 is connected with the CFB2 network, the seventh port of the chip U4 is divided into two paths and is respectively connected with the V port and one end of the capacitor C52, the other end of the capacitor C52 is grounded, the sixth port of the chip U4 is connected with one end of the resistor R145, the other end of the resistor R145 is divided into two paths and is respectively connected with the cathode of the zener diode Z9 and the G-pole port of the FET T11, the anode of the zener diode Z9 is divided into four paths and is respectively connected with one end of the resistor R47, one end of the resistor R146, one end of the resistor R147 and the S-pole port of the FET T38, the other end of the resistor R47 is divided into three paths and is respectively connected with the other end of the resistor R146, the other end of the resistor R147, the cathode of the diode D35 is divided into two paths and is respectively connected with one end of a resistor R37 and one end of a capacitor C16, the other end of a resistor R37 is divided into four paths and is respectively connected with the other end of the capacitor C16, the twelve port of a secondary power transformer TR2, a VDD network and one end of a capacitor C46, the other end of the capacitor C46 is grounded, the eight port of a secondary power transformer TR2 is grounded, the seven port of the secondary power transformer TR2 is connected with the anode of a diode D34, the cathode of the diode D34 is divided into two paths and is respectively connected with one end and the V port of a capacitor C67, the other end of a capacitor C67 is grounded, the six port of a secondary power transformer TR2 is connected with the anode of a diode D27, the cathode of the diode D27 is divided into two paths and is respectively connected with the anodes of the capacitor C39, the capacitor C19, the first port of an HF1 needle bed and the anode of a diode D32, the cathode of the diode D32 is connected with the anode of the diode D36, the other end of the capacitor C39 is divided into four paths and is respectively connected with a fifth port of a secondary power transformer TR2, the other port of the capacitor C19, a second port of a needle seat HF1 and the ground, a second port of a secondary power transformer TR2 is connected with the cathode of a diode D28, the anode of the diode D28 is divided into three paths and is respectively connected with one end of a capacitor C38, one end of a capacitor C42 and a second port of a needle seat FAN1, a first port of a FAN1 is grounded, the other end of a capacitor C38 is divided into six paths and is respectively connected with a third port of a secondary power transformer TR2, one end of a capacitor C29, one end of a capacitor C30, the other end of a capacitor C42, one end of a resistor R45 and the ground, the other end of the capacitor C29 is divided into four paths and is respectively connected with the cathode of a diode D29, the cathode of a voltage stabilizing diode Z599, the other end of a capacitor C30 and the other end of a resistor R82; the anode of the Zener diode Z7 is connected with the cathode of the Zener diode Z8, the anode of the Zener diode Z8 is connected with one end of a resistor R48, the other end of the resistor R48 is divided into two paths to be respectively connected with one end of a resistor R49 and a first port of a photoelectric coupler control end U37A, and the other end of the resistor R49 is divided into two paths to be respectively connected with a second port of the U37A and the ground; the V port is connected with one end of a resistor R144, the other end of the resistor R144 is connected with one end of a resistor R65, the other end of a resistor R65 is connected with one end of a resistor R64, the other end of the resistor R64 is divided into three paths to be respectively connected with a VDD network, one end of a capacitor C37 and one end of a resistor R31, the other end of the resistor R31 is connected with a cathode of a diode D33, an anode of the diode D33 is connected with a DC + network, the other end of the capacitor C37 is divided into two paths to be respectively connected with one end of a TS-switch and the ground, and the other end of the.

6. An argon arc welding machine capable of being carried on an external machine as claimed in claim 1, wherein: the circuit of the output rectifying board (8) further comprises an input pad J18, an input pad J17 and an output pad J19, wherein J18 is divided into four paths which are respectively connected with one end of a resistor R148, one end of a resistor R152, the anode of a fast recovery diode D44 and the anode of a fast recovery diode D45, the other end of the resistor R148 is divided into three paths which are respectively connected with the other end of the resistor R152, one end of the resistor R153 and one end of the resistor R149, the other end of the resistor R153 is divided into two paths which are respectively connected with the other end of the resistor R149 and one end of a capacitor C68, the other end of the capacitor C68 is divided into three paths which are respectively connected with the cathode of a fast recovery diode D44, the cathode of a fast recovery diode D45, the cathode of a fast recovery diode D46, the cathode of a fast recovery diode D47, the cathode of an output pad J14, an end of a J21, J16, a J23, a J24, one end of a pad J69, a second end of a third end of a shunt row F2, and a fourth row F8653, the other end of the capacitor C69 is divided into two paths to be respectively connected with one end of the resistor R151 and one end of the resistor R155, the other end of the resistor R151 is divided into three paths to be respectively connected with the other end of the resistor R155, one end of the resistor R150 and one end of the resistor R154, and the other end of the resistor R150 is divided into four paths to be respectively connected with the other end of the resistor R154, the anode of the fast recovery diode D46, the anode of the fast recovery diode D47 and the input pad J17.

7. An argon arc welding machine capable of being carried on an external machine as claimed in claim 1, wherein: the circuit of the high-frequency voltage doubling plate (20) comprises a needle seat J5, a needle seat J6, a needle seat J7 and a relay J20, wherein the model of the relay J20 is SZ-S-124DM, a first port of the needle seat J5 is connected with one end of a resistor R60, the other end of the resistor R60 is connected with the anode of a diode D18, one end of a capacitor C15, one end of a capacitor C28, one end of a capacitor C63, one end of a resistor R62, a K-pole port of a thyristor T17, the anode of a diode D25 and one end of a resistor R100 in eight ways respectively, the other end of the capacitor C28 is connected with the first port of the needle seat J28 and one end of the resistor R28 in two ways respectively, the other end of the resistor R28 is connected with one end of the capacitor C28, the cathode of the diode D28 is connected with the cathode of the diode D28 and one end of the capacitor C28 in three ways respectively, the other end of the capacitor C21 is divided into three paths and is respectively connected with the anode of the diode D20, the cathode of the diode D18 and one end of the capacitor C14, and the other end of the capacitor C14 is connected with the second port of the needle seat J5 after being connected with the switch; the other end of the capacitor C63 is connected with one end of a resistor R104, the other end of the resistor R104 is connected with one end of an inductor L4, the other end of the inductor L4 is divided into two paths and is respectively connected with one end of a resistor R111 and one end of a resistor R63, the other end of the resistor R63 is connected with a bidirectional trigger diode V1, the other end of the bidirectional trigger diode V1 is divided into two paths and is respectively connected with the other end of the resistor R62 and a G pole port of a thyristor T17, and an A pole port of the thyristor T17 is divided into four paths and is respectively connected with the other end of the resistor R100, a cathode of a diode D25, the other end of the resistor R111; the first port of the needle seat J6 is connected with the cathode of the diode D26 and one end of the relay J20 respectively, and the anode of the diode D26 and the other end of the relay J20 are combined and connected with the second port of the needle seat J6.

8. An argon arc welding machine capable of being carried on an external machine as claimed in claim 1, wherein: the circuit of the high-frequency absorption plate (13) comprises an input pad J1, an input pad J2 and a support column J4, wherein the input pad J1 is divided into four paths to be respectively connected with one end of a capacitor C4, one end of a capacitor C1, one end of a resistor R2 and the anode of a diode D5, the cathode of the diode D5 is divided into two paths to be respectively connected with one end of a resistor R4 and one end of a capacitor C2, the other end of the capacitor C2 is divided into five paths to be respectively connected with the other end of a resistor R4, the other end of a resistor R2, the other end of a capacitor C1, one end of a capacitor C6 and an input pad J2, and the other end of a capacitor C6 is divided into two paths to be respectively connected with.

9. An argon arc welding machine capable of being carried on an external machine as claimed in claim 1, wherein: the circuit of the control panel (22) comprises a single chip microcomputer U10, a chip U6, a needle seat J10, a needle seat J28 and a needle seat J29, the model of the single chip microcomputer U10 is MB95F698, the model of the chip U6 is 7805, a fifteen-port of the single chip microcomputer U10 is divided into two paths to be respectively connected with one end of a resistor R53 and a second port of a needle seat DBG, the other end of the resistor R53 is connected with a 5V port, a first port of the needle seat DBG is connected with the 5V port, and a third port of the needle seat DBG is grounded; the 5V port is divided into five paths and is respectively connected with one end of a capacitor C48, one end of a resistor R50, one end of a needle seat PULSE, one end of a resistor R115 and one end of a resistor R116, the other end of the resistor R115 is divided into four paths and is respectively connected with a thirty-nine port of a singlechip U10, a cathode of a voltage stabilizing diode Z42, one end of a capacitor C90 and a first port of a needle seat OT1, the other end of the capacitor C90 is divided into three paths and is respectively connected with an anode of a voltage stabilizing diode Z42, a second port of the needle seat OT1 and the ground, the other end of the resistor R116 is divided into four paths and is respectively connected with a first port of a needle seat OT2, a cathode of a voltage stabilizing diode Z43, one end of a capacitor C89 and a fifth port of a singlechip U10, and the other end of a capacitor C89 is divided into three paths and is respectively connected with a; the other end of the capacitor C48 is grounded, the other end of the resistor R50 is respectively connected with a forty-five port of the singlechip U10 and one end of the capacitor C51, the other end of the capacitor C51 is grounded, the second port of the needle seat PULSE is divided into two paths and is respectively connected with a forty-three port of the singlechip U10 and one end of the resistor R51, and the other end of the resistor R51 is grounded; the first port of the needle seat J10 is divided into two paths to be connected with a VCC power supply port and the cathode of the diode D23 respectively, the anode of the diode D23 is divided into five paths to be connected with the third port of the needle seat J10, the cathode of the diode D24, the ninth port of the operational amplifier U5C, one end of the resistor R39 and one end of the resistor R56 respectively, the other end of the resistor R39 is divided into three paths to be connected with one end of the resistor R40, one end of the capacitor C31 and one end of the resistor R41 respectively, the other end of the resistor R41 is divided into two paths to be connected with the forty-two ports of the singlechip U10 and one end of the capacitor C32 respectively, and the other end of the capacitor C32 is divided into three paths to be connected with the other end of; the anode of the diode D24 is divided into two paths to be connected with a VCC negative power supply port and a second port of the needle seat J10 respectively, a fourth port of the needle seat J10 is grounded, a tenth port of the operational amplifier U5C is divided into three paths to be connected with one end of a resistor R133, one end of a capacitor C113 and one end of a resistor R132 respectively, the other end of the resistor R132 is connected with the VCC power supply port, and the other end of the capacitor C113 is divided into two paths to be connected with the other end of the resistor R133 and grounded respectively; the eighth port of the operational amplifier U5C is connected with the anode of the diode D37, the cathode of the diode D37 is respectively connected with one end of the resistor R161 and the G-pole port of the NMOS tube T5, and the other end of the resistor R161 is grounded; the S pole port of the NMOS tube T5 is divided into three paths, and is respectively connected with one end of a resistor R8, the ground and a third port of a chip U1, the model of the chip U1 is UC3846, the D pole port of the NMOS tube T5 is connected with one end of a resistor R162, and the other end of the resistor R162 is respectively connected with the other end of a resistor R8 and a ninth port of a chip U1; the other end of the resistor R56 is respectively connected with one end of a resistor R29, the anode of a voltage stabilizing diode VD1, the second port of the amplifier U5A, the cathode of a diode D10, the anode of a diode D11, one ends of a resistor R32 and a resistor R46, one end of a capacitor C27, the other end of a capacitor C27 is respectively connected with the other end of a resistor R46 and one end of a resistor R38, the other end of a resistor R38 is connected with the anode of a diode D31, the cathode of a diode D31 is respectively connected with the other end of a resistor R32, the seventh port of an amplifier U5B and one end of a resistor R34, the fifth port of an amplifier U5B is grounded, the sixth port of an amplifier U5B is respectively connected with one end of a resistor R23, the other end of a resistor R34 and one end of a resistor R20, the other end of a resistor R20 is, a third port of the variable resistor VR3 is connected with a VCC power supply port, and a first port of the variable resistor VR3 is connected with a second port of the needle base Driver; the other end of the resistor R23 is connected with a second port of the variable resistor VR2, a first port of the variable resistor VR2 is grounded, a third port of the variable resistor VR2 is respectively connected with thirteen and fourteen ports of the amplifier U5D, a twelfth port of the amplifier U5D is respectively connected with one end of the resistor R13 and one end of the capacitor C26, and the other end of the capacitor C26 is respectively connected with one end of the resistor R11 and the ground; the other ends of the resistor R11 and the resistor R13 are connected with a thirty-one port of the singlechip U10 in a combined manner; the third port of the amplifier U5A is connected with the anode of the diode D10, the cathode of the diode D11 and the ground respectively; a first port of the amplifier U5A is connected with a cathode of a voltage-stabilizing diode VD1, one end of a resistor R36 and one end of a capacitor C23 respectively, the other end of the capacitor C23 is connected with the other end of a resistor R29, the other end of the resistor R36 is divided into four paths and is connected with a cathode of a diode D12, one end of a capacitor C24, one end of a resistor R33, one end of a resistor R42 and one end of a resistor R19 respectively, an anode of the diode D12, the other end of the capacitor C24 and the other end of the resistor R33 are grounded respectively, the other end of the resistor R42 is connected with a C-pole port of a triode Q5, an E-pole port of the triode Q5 is grounded, a B-pole port of the triode Q5 is connected with one end of a resistor R18, and the other; the other end of the resistor R19 is divided into two paths and is respectively connected with one end of a capacitor C13 and a fifth port of a chip U1, the other end of the capacitor C13 is grounded, a twelfth port of the chip U1 is grounded, a thirteenth port of the chip U1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with a VCC power supply port, a second port of the chip U1 is connected with a VREF network, a fourth port of the chip U1 is divided into five paths and is respectively connected with one end of a capacitor C93, one end of a resistor R9, one end of a resistor R15, one end of a resistor R119 and one end of a resistor R16, the other end of the resistor R9 is grounded, the other end of a resistor R16 is connected with a CT network, the other end of the resistor R119 is connected with one end of a capacitor C92, the other end of the capacitor C92 is divided into three paths and is respectively connected with the other end of a resistor R15, the other end of a capacitor C93 and an E pole port of a, One end of the capacitor C12 and an eighth port of the chip U1, and the other end of the capacitor C10 is divided into two paths to be respectively connected with the other end of the capacitor C12 and the ground; the fourteen port of the chip U1 is connected with the fifth port of the Driver and the anode of the diode D14, the eleventh port of the chip U1 is connected with the fourth port of the Driver and the anode of the diode D15, the cathodes of the diode D14 and the diode D15 are connected with one end of the resistor R122 and one end of the capacitor C108, the other end of the resistor R122 is grounded, the other end of the capacitor C108 is connected with one end of the resistor R123 and the G pole of the NMOS tube T4, the other end of the resistor R123 is grounded, the S pole of the NMOS tube T4 is grounded, the D pole of the NMOS tube T4 is connected with one end of the resistor R121, the third port of the amplifier U30A and one end of the capacitor C107, the other end of the capacitor C107 is grounded, the other end of the resistor R121 is connected with one end of the capacitor C105 and one end of the resistor R120, the other end of the resistor R120 is grounded, the other end of the capacitor C105 is connected with the cathode of the diodes D2 and D3, the cathode of, One end of the R17, the other end of the R17 is connected with one end of a capacitor C17 and the CT network respectively, the other end of the capacitor C17 is grounded, the anode of the diode D2 is connected with the first port of the pin seat HGQ and the cathode of the diode D1 respectively, the anode of the diode D3 is connected with the second port of the pin seat HGQ and the cathode of the diode D4 respectively, and the anode of the diode D1, the anode of the diode D4 and the other end of the resistor R6 are grounded in a combined manner; the other end of the resistor R3 is respectively connected with one end of a capacitor C5, one end of a resistor R5, a sixteen-numbered port of a chip U1, one end of a resistor R129, one end of a resistor R127 and the cathode of a diode D13, the anode of a diode D13 is connected with one end of a resistor R21, and the other end of the resistor R21 is connected with a 47-numbered port of a singlechip U10; the other ends of the capacitor C5 and the resistor R5 are grounded; the other end of the resistor R129 is connected with the cathode of the diode D17, the anode of the diode D17 is respectively connected with the seventh port of the amplifier U30B and one end of the resistor R128, and the other end of the resistor R128 is connected with a VCC power supply end; a fifth port of the amplifier U30B is connected with a VREF network, a sixth port of the amplifier U30B is respectively connected with one end of a resistor R96, one end of a capacitor C44 and one end of a resistor R87, the other end of a resistor R87 is connected with a VCC power supply end, and the other end of a resistor R96 and the other end of the capacitor C44 are combined and grounded; the other end of the resistor R127 is connected with the cathode of the diode D16, the anode of the diode D16 is respectively connected with the first port of the amplifier U30A and one end of the resistor R126, the other end of the resistor R126 is connected with a VCC power supply end, the second port of the amplifier U30A is respectively connected with one ends of the resistor R124 and the resistor R125 and one end of the capacitor C109, the other ends of the resistor R124 and the capacitor C109 are grounded, and the other end of the resistor R125 is connected with the VCC power supply end; a first port of a chip U6 is connected with a VCC power supply end and one end of a capacitor C49 respectively, the model of the chip U6 is 7805, the other end of the capacitor C49 is connected with a second port of the chip U6, one end of a capacitor C50, the cathode of a light-emitting diode LED1 and the ground, the anode of the light-emitting diode LED1 is connected with one end of a resistor R52, and the other end of the resistor R52 and the other end of the capacitor C50 are connected with a third port of the chip U6 in a combined manner; the thirty-third port of the single chip microcomputer U10 is connected with one end of a resistor R166, the other end of the resistor R166 is connected with the G pole end of an NMOS tube T9, the D pole end of the NMOS tube T9 is connected with an SS network, the S pole end of the NMOS tube T9 is connected with the fourth end of a controlled end U33B of a photoelectric coupler, and the third end of the controlled end U33B of the photoelectric coupler is grounded; a port 44 of the singlechip U10 is respectively connected with one end of a resistor R135, one end of a resistor R134, one end of a capacitor C91 and a port II of a photoelectric coupler controlled end U27, the other end of the resistor R135 is connected with a port B of a triode Q3, a port E of the triode Q3 is grounded, a port C of a triode Q3 is respectively connected with one end of a resistor R131 and a port I of a needle base Ready, the other end of the resistor R131 is connected with a 5V power supply end, and a port I of the needle base Ready is grounded; the other end of the resistor R134 is connected with a first port of the needle seat Aonormal, and a second port of the needle seat Aonormal is grounded; a first port of a controlled end U27 of the photoelectric coupler is respectively connected with the other end of a capacitor C91 and one end of a resistor R107, the other end of the resistor R107 is connected with a 5V power supply end, a third port of a controlled end U27 of the photoelectric coupler is connected with one end of a resistor R110, the other end of the resistor R110 is respectively connected with one end of a capacitor C100, one end of a resistor R109 and a B pole end of a triode Q16, and the other end of the capacitor C100, the other end of the resistor R109 and an E pole end of the triode Q16 are respectively grounded; the C pole terminal of the triode Q16 is respectively connected with the second port of the pin base 24VOUT1 and the anode of the diode D19, the first port of the pin base 24VOUT1, the cathode of the diode D19 and the fourth port of the controlled end U27 of the photoelectric coupler are combined with a 24V power supply end; the forty-first port of the singlechip U10 is respectively connected with the cathode of a zener diode Z3, one end of a capacitor C78 and one end of a resistor R89, the anode of the zener diode Z3 and the other end of the capacitor C78 are grounded, the other end of a resistor R89 is respectively connected with the thirty-seven port of the singlechip U10, one end of a capacitor C64, one end of a resistor R88 and one end of a resistor R86, the other end of a capacitor C64 and the other end of a resistor R88 are respectively grounded, the other end of a resistor R86 is respectively connected with the first port and the second port of an amplifier U A, the third port of the amplifier U32A is respectively connected with one end of a capacitor C58, one end of a resistor R85 and the fifth port of a photocoupler controlled end U17, the other end of a capacitor C58 and the other end of a resistor R85 are respectively grounded, the sixth port of a photocoupler controlled end U17 is connected with a power supply end, the first port of a photocoupler controlled end U36 17 is grounded, and the second port of a photocoupler U17 is, the other end of the resistor R57 is respectively connected with one end of a capacitor C57 and a first port of an amplifier U29A, the other end of the capacitor C57 is respectively connected with a fourth port of a controlled end U17 of the photoelectric coupler, one end of a resistor R77 and a second port of an amplifier U29A, the other end of the resistor R77 is grounded, a third port of the controlled end U17 of the photoelectric coupler is respectively connected with one end of a capacitor C96, one end of a resistor R108 and one end of a resistor R82, the other end of the capacitor C96 and the other end of the resistor R108 are respectively grounded, and the other end of the resistor R82 is respectively connected with one end of a resistor R163 and a first port of a needle seat VFB; the second port of the needle seat VFB is grounded; the other end of the resistor R163 is respectively connected with one end of the resistor R164, one end of the capacitor C114 and the cathode of the voltage stabilizing diode Z45, and the other end of the resistor R164 and the other end of the capacitor C114 are combined and grounded; the anode of the Zener diode Z45 is connected with the cathode of the Zener diode Z44, the anode of the Zener diode Z44 is respectively connected with one end of the resistor R165 and the first port of the controlled end U33A of the photoelectric coupler, and the second port of the controlled end U33A of the photoelectric coupler and the other end of the resistor R165 are combined and grounded; the second port of the needle seat J28 is grounded, the first port of J28 is respectively connected with one end of a capacitor C35 and the second port of a photoelectric coupler controlled end U12, the other end of the capacitor C35 is respectively connected with the first port of a photoelectric coupler controlled end U12 and one end of a resistor R43, the other end of the resistor R43 is connected with a 24V power supply end, the four port of the photoelectric coupler controlled end U12 is connected with a 5V power supply end, the three ports of the photoelectric coupler controlled end U12 are respectively connected with the forty-six port of the singlechip U10, one end of a capacitor C40 and one end of a resistor R44, and the other end of the capacitor C40 and the other end of the resistor R44 are grounded in a combined mode; a first port of the needle seat J29 is connected with one end of a resistor R83, the other end of the resistor R83 is respectively connected with one end of a resistor R84, one end of a capacitor C97 and a third port of an amplifier U34A, the other end of the resistor R84 and the other end of the capacitor C97 are respectively grounded, a second port of the amplifier U34A is respectively connected with one end of a resistor R78, one end of the capacitor C59 and a fourth port of a photoelectric coupler controlled end U18, and the other end of the resistor R78 is grounded; a first port of the amplifier U34A is connected with the other end of the capacitor C59, one end of the resistor R58 and the other end of the resistor R58 respectively and is connected with a second port of a controlled end U18 of the photoelectric coupler, a first port of the controlled end U18 of the photoelectric coupler is grounded, and a third port of the controlled end U18 of the photoelectric coupler is connected with a 24V power supply end; a sixth port of a controlled end U18 of the photoelectric coupler is connected with a VCC power supply end; a fifth port of a controlled end U18 of the photoelectric coupler is respectively connected with one end of a resistor R94, one end of a capacitor C60 and a third port of an amplifier U35A, the other end of the resistor R94 and the other end of the capacitor C60 are respectively grounded, a first port and a second port of the amplifier U35A are combined and connected with one end of a resistor R95, the other end of the resistor R95 is respectively connected with a fourth port of a singlechip U10, one end of the resistor R70, one end of a capacitor C81 and a cathode of a voltage stabilizing diode Z6, the other end of the capacitor C81 and an anode of the voltage stabilizing diode Z6 are combined and grounded, and the other end of the resistor R70 is grounded; a second port of the needle seat J29 is connected with one end of a resistor R105, the other end of the resistor R105 is respectively connected with one end of a resistor R106, one end of a capacitor C98 and a fifth port of an amplifier U34B, the other end of the resistor R106 and the other end of the capacitor C98 are respectively grounded, a sixth port of the amplifier U34B is respectively connected with one end of a resistor R79, one end of a capacitor C61 and a fourth port of a controlled end U19 of a photoelectric coupler, and the other end of the resistor R79 is grounded; a first port of the amplifier U34B is connected with the other end of the capacitor C61, one end of the resistor R59 and the other end of the resistor R59 respectively and is connected with a second port of a controlled end U19 of the photoelectric coupler, a first port of the controlled end U19 of the photoelectric coupler is grounded, and a third port of the controlled end U19 of the photoelectric coupler is connected with a 24V power supply end; a sixth port of a controlled end U19 of the photoelectric coupler is connected with a VCC power supply end; a fifth port of a controlled end U19 of the photoelectric coupler is respectively connected with one end of a resistor R101, one end of a capacitor C62 and a fifth port of an amplifier U35B, the other end of the resistor R101 and the other end of the capacitor C62 are respectively grounded, a sixth port and a seventh port of the amplifier U35B are combined and connected with one end of a resistor R103, the other end of the resistor R103 is respectively connected with a thirty-eight port of a singlechip U10, one end of a resistor R69, one end of a capacitor C80 and a cathode of a zener diode Z5, the other end of the capacitor C80 and an anode of the zener diode Z5 are combined and grounded, and the other end of the resistor R69 is grounded; the third port of the needle seat J29 is connected with the C pole end of the triode Q4, the E pole end of the triode Q4 is grounded, the B pole end of the triode Q4 is connected with one end of the resistor R35, the other end of the resistor R35 is respectively connected with one end of the capacitor C86 and the resistor R99, the third port of the controlled end U25 of the photoelectric coupler, and the other ends of the capacitor C86 and the resistor R99 are grounded in a combined mode; a fourth port of a controlled end U25 of the photoelectric coupler is connected with a 24V power supply end, a second port of a controlled end U25 of the photoelectric coupler is grounded, a first port of a controlled end U25 of the photoelectric coupler is connected with one end of a circuit R93, and the other end of the circuit R93 is connected with a thirty-six port of a single chip microcomputer U10; a ninth port of the singlechip U10 is connected with one end of a resistor R98, the other end of the resistor R98 is connected with a first port of a controlled end U26 of the photoelectric coupler, a second port of the controlled end U26 of the photoelectric coupler is grounded, a third port of the controlled end U26 of the photoelectric coupler is respectively connected with one end of a capacitor C94, one end of a resistor R102, the ground and an S pole end of an NMOS tube T7, and a D pole end of the NMOS tube T7 is respectively connected with an anode of a diode D38 and a second port of a needle base FZNJ; a first port of the needle base ZNFJ is connected with a cathode of a diode D38, a power supply end of 24V and one end of a resistor R97 respectively, and the other end of the resistor R97 is connected with the other end of a resistor R102, a G pole end of an NMOS tube T7, the other end of a capacitor C94 and a fourth port of a controlled end U26 of a photoelectric coupler respectively; the eight port of the singlechip U10 is connected with one end of a resistor R92, the other end of the resistor R92 is connected with the first port of a controlled end U24 of a photoelectric coupler, the second port of the controlled end U24 of the photoelectric coupler is grounded, the third port of the controlled end U24 of the photoelectric coupler is connected with one end of a resistor R91, the other end of the resistor R91 is respectively connected with one end of a capacitor C85, one end of a resistor R90 and the B pole of a triode Q15, the other end of the capacitor C85 and the other end of the resistor R90 are respectively grounded, the E pole of the triode Q15 is grounded, the C pole of the triode Q15 is connected with the first port of a needle seat HF, the second port of the needle seat HF is grounded, and the third port of the needle seat HF is connected; a fourth port of the controlled end U24 of the photoelectric coupler is connected with a 24V power supply end; the first port of the pin socket POWER is connected with one end of a resistor R130, and the other end of the resistor R130 is connected with a VCC POWER supply end; the second port of the needle base POWER is grounded; u24, U25 and U26 are photocouplers with the model number of EL817, U12 is a photocoupler with the model number of PC817, and U17, U18 and U19 are linear photocouplers with the model number of HCNR 200.