Adaptive circuit of multi-push-pull wire welding gun

Abstract

The utility model relates to an adaptive circuit of a multi-push-pull wire welding gun, which comprises a multi-voltage output circuit, the input end of the multi-voltage output circuit is connected with a first external power supply, the first output end of the multi-voltage output circuit is used for outputting a first voltage, and the second output end of the multi-voltage output circuit is used for outputting a second voltage, a third output end of the multi-voltage output circuit is used for outputting a third voltage, and a fourth output end of the multi-voltage output circuit is used for outputting a fourth voltage; the input end of the control circuit is used for inputting a control signal, the first output end of the control circuit is connected with the first analogous wire-drawing welding gun, the second output end of the control circuit is connected with the second analogous wire-drawing welding gun, and the first analogous wire-drawing welding gun is a wire-pushing welding gun controlled by an analog signal; and the second push-pull wire welding gun is a push-pull wire welding gun controlled by a digital signal. At least standardized circuit products matched with various welding guns can be formed, and the production and development time of a circuit matched with a single welding gun is shortened.

Description

Technical Field

[0001] This application relates to the field of welding torch circuit technology, and in particular to an adapter circuit for a multi-push-pull wire welding torch. Background Technology

[0002] A push-pull wire welding gun is a welding device, particularly suitable for welding aluminum and aluminum alloys. It feeds the welding wire into the welding area by pushing and pulling the wire, thereby achieving a high-quality welding effect.

[0003] However, since the interfaces and control signal types of each welding gun are different, a corresponding circuit needs to be designed separately for each type of welding gun to form the power supply and control of the welding gun. This not only makes it impossible to form a standardized product, but also consumes a lot of production and development time. At the same time, when using the welding gun, it is also necessary to find a power supply control adapter circuit that matches the welding gun. The management of the welding gun and the adapter circuit also consumes a lot of manpower and resources. Utility Model Content

[0004] Therefore, it is necessary to provide an adapter circuit for a multi-push-pull wire welding gun to address the problems mentioned in the background technology. This circuit can at least form a standardized circuit product that is compatible with a variety of welding guns, thereby reducing the production and development time of adapter circuits for a single welding gun and reducing the manpower and resources consumed in the management of welding guns and adapter circuits.

[0005] To address the aforementioned technical and other issues, according to some embodiments, this application provides an adapter circuit for a multi-push-pull wire welding gun, comprising: a multi-voltage output circuit, the input terminal of which is connected to a first external power supply, the first output terminal of which is used to output a first voltage, the second output terminal of which is used to output a second voltage, the third output terminal of which is used to output a third voltage, and the fourth output terminal of which is used to output a fourth voltage; and a control circuit, the input terminal of which is used to input a control signal, the first output terminal of which is connected to a first type of push-pull wire welding gun, and the second output terminal of which is connected to a second type of push-pull wire welding gun, wherein the first type of push-pull wire welding gun is an analog signal controlled push-pull wire welding gun, and the second type of push-pull wire welding gun is a digital signal controlled push-pull wire welding gun.

[0006] In some embodiments, the control circuit includes an inductor circuit, an analog signal control circuit, and a digital signal control circuit; wherein, one end of the inductor circuit serves as the input terminal of the control circuit for inputting control signals, the other end of the inductor circuit is connected to the input terminal of the analog signal control circuit, the output terminal of the analog signal control circuit serves as the first output terminal of the control circuit and is connected to a first type of push-pull wire welding gun, the other end of the inductor circuit is also connected to the input terminal of the digital signal control circuit, and the output terminal of the digital signal control circuit serves as the second output terminal of the control circuit and is connected to a second type of push-pull wire welding gun.

[0007] In some embodiments, the analog signal control circuit includes a dual operational amplifier subcircuit, a first optocoupler subcircuit, and an operational amplifier subcircuit. The input terminal of the dual operational amplifier subcircuit is connected to the other end of the inductor circuit as the input terminal of the analog signal control circuit. The first output terminal of the dual operational amplifier subcircuit is connected to the second input terminal of the first optocoupler. The second output terminal of the dual operational amplifier subcircuit is connected to the first input terminal of the first optocoupler subcircuit. The output terminal of the first optocoupler subcircuit is connected to the input terminal of the operational amplifier subcircuit. The output terminal of the operational amplifier subcircuit is connected to the first type of push-pull wire welding gun as the first output terminal of the control circuit.

[0008] In some embodiments, the dual operational amplifier subcircuit includes a first resistor, a second resistor, and a dual operational amplifier chip; wherein, one end of the first resistor serves as the input terminal of the dual operational amplifier subcircuit and is connected to the other end of the inductor circuit, the other end of the first resistor is connected to the first non-inverting input terminal of the dual operational amplifier chip, the first output terminal of the dual operational amplifier chip is connected to the first inverting input terminal of the dual operational amplifier chip, the output terminal of the dual operational amplifier chip is also connected to one end of the second resistor, the other end of the second resistor is connected to the second inverting input terminal of the dual operational amplifier chip, the second non-inverting input terminal of the dual operational amplifier chip is grounded, the output terminal of the dual operational amplifier chip serves as the second output terminal of the dual operational amplifier subcircuit and is connected to the first input terminal 1 of the first optocoupler subcircuit, and the other end of the second resistor serves as the first output terminal of the dual operational amplifier subcircuit and is connected to the second input terminal of the first optocoupler subcircuit.

[0009] In some embodiments, the first optocoupler subcircuit includes a first capacitor, a third resistor, and a first optocoupler; one end of the third resistor serves as the first input terminal of the first optocoupler subcircuit and is connected to the second output terminal of the dual operational amplifier subcircuit; the other end of the third resistor is connected to pin 1 of the first optocoupler; pin 2 of the first optocoupler is connected to a second external power supply; pin 3 of the first optocoupler serves as the second input terminal of the first optocoupler subcircuit and is connected to the first output terminal of the dual operational amplifier subcircuit; pin 4 of the first optocoupler is grounded; pin 5 of the first optocoupler is grounded; and pin 6 of the first optocoupler serves as the output terminal 6 of the first optocoupler subcircuit and is connected to the input terminal of the operational amplifier subcircuit.

[0010] In some embodiments, the operational amplifier sub-circuit includes a fourth resistor, a fifth resistor, a sixth resistor, a second capacitor, a third capacitor, a fourth capacitor, an operational amplifier, and a first diode. The inverting input of the operational amplifier is connected to the output of the first optocoupler sub-circuit, serving as the input of the operational amplifier sub-circuit. The non-inverting input of the operational amplifier is grounded. The non-inverting input of the operational amplifier is also connected to one end of the second capacitor, and the other end of the second capacitor is connected to a second external power supply. The inverting input of the operational amplifier is also connected to one end of the fourth resistor, and the other end of the fourth resistor is connected to the output of the operational amplifier. One end of the third capacitor is connected to one end of the fourth resistor, and the other end of the third capacitor is connected to the other end of the fourth resistor. One end of the fifth resistor is connected to the other end of the third capacitor, and the other end of the fifth resistor is connected to one end of the fourth capacitor. The other end of the fourth capacitor is grounded. One end of the fourth capacitor is connected to one end of the sixth resistor, and the other end of the fourth capacitor is connected to the other end of the sixth resistor. One end of the sixth resistor is also connected to the anode of the first diode, and the cathode of the first diode is connected to a third external power supply. One end of the sixth resistor serves as the output of the operational amplifier sub-circuit and is connected to a first type of push-pull wire welding gun.

[0011] In some embodiments, the digital signal control circuit includes a seventh resistor, an eighth resistor, a ninth resistor, a fifth capacitor, and a second optocoupler; wherein, one end of the seventh resistor serves as the input terminal of the digital signal control circuit and is connected to the other end of the inductor circuit, the other end of the seventh resistor is connected to the first end of the second optocoupler, the second end of the second optocoupler is grounded, the third end of the second optocoupler is connected to a second external power supply, the fourth end of the second optocoupler is connected to one end of the eighth resistor, the other end of the eighth resistor serves as the output terminal of the digital signal control circuit and is connected to a second type of push-pull wire welding gun, one end of the fifth capacitor is connected to one end of the eighth resistor, the other end of the fifth capacitor is grounded, one end of the ninth resistor is connected to one end of the fifth capacitor, and the other end of the ninth resistor is connected to the other end of the fifth capacitor.

[0012] In some embodiments, a first protection circuit and a second protection circuit are also included; wherein one end of the first protection circuit is connected to the other end of the first resistor, the other end of the first protection circuit is connected to the first non-inverting input terminal of the dual operational amplifier chip, one end of the second protection circuit is connected to the other end of the inductor circuit, and the other end of the second protection circuit is grounded.

[0013] In some embodiments, the first protection circuit includes a Zener diode, a tenth resistor, and a sixth capacitor. One end of the tenth resistor serves as one end of the first protection circuit and is connected to the other end of the first resistor. The other end of the tenth resistor is grounded. One end of the sixth capacitor is connected to one end of the tenth resistor. The other end of the sixth capacitor is grounded. One end of the sixth capacitor serves as the other end of the first protection circuit and is connected to the first non-inverting input terminal of the dual operational amplifier chip. The cathode of the Zener diode is connected to one end of the tenth resistor, and the cathode of the Zener diode is connected to the other end of the tenth resistor. The second protection circuit includes an eleventh resistor and a seventh capacitor. One end of the eleventh resistor serves as one end of the first protection circuit and is connected to the other end of the inductor circuit. The other end of the eleventh resistor is grounded. One end of the seventh capacitor is connected to one end of the eleventh resistor, and the other end of the seventh capacitor is grounded.

[0014] In some embodiments, the multi-voltage output circuit includes a rectifier bridge, a first single-pole double-throw switch, a second single-pole double-throw switch, a thirteenth resistor, a ninth capacitor, and a tenth capacitor. One end of the thirteenth resistor serves as the input terminal of the multi-voltage output circuit and is connected to a first external power supply. The other end of the thirteenth resistor is grounded. One end of the thirteenth resistor is also connected to the fourth terminal of the rectifier bridge. The second terminal of the rectifier bridge serves as the first output terminal of the multi-voltage output circuit for outputting a first voltage. The other end of the thirteenth resistor is connected to the stationary terminal of the first single-pole double-throw switch. The first moving terminal of the first single-pole double-throw switch serves as the second output terminal of the multi-voltage output circuit for outputting a second voltage. The second moving terminal of the first single-pole double-throw switch is connected to the first terminal of the rectifier bridge. The third terminal of the rectifier bridge is connected to the stationary terminal of the second single-pole double-throw switch. The first moving terminal of the second single-pole double-throw switch serves as the third output terminal of the multi-voltage output circuit for outputting a third voltage. The second moving terminal of the second single-pole double-throw switch serves as the fourth output terminal of the multi-voltage output circuit for outputting a fourth voltage.

[0015] The adapter circuit of the multi-push-pull wire welding gun in the above embodiment outputs multiple voltages through a multi-voltage output circuit and outputs analog control signals and digital control signals through a control circuit. It can provide signal control and power supply for multiple push-pull wire welding guns, and can form a standardized circuit product that is compatible with multiple welding guns. This reduces the production and development time of adapter circuits for a single welding gun and reduces the manpower and material resources consumed in the management of welding guns and adapter circuits. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the adapter circuit principle of the multi-push-pull wire welding gun provided in one embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the control circuit provided in one embodiment of this application.

[0019] Figure 3 This is a schematic diagram of a multi-voltage output circuit provided in one embodiment of this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 101. Multi-voltage output circuit; 102. Control circuit; 201. Inductor circuit; 202. Analog signal control circuit; 203. Digital signal control circuit; 204. Dual operational amplifier sub-circuit; 205. First optocoupler sub-circuit; 206. Operational amplifier sub-circuit; 207. Dual operational amplifier chip; 208. First optocoupler; 209. Operational amplifier; 210. Second optocoupler; 211. First protection circuit; 212. Second protection circuit; 213. Third protection circuit; 301. Rectifier bridge; 302. First single-pole double-throw switch; 303. Second single-pole double-throw switch; R1. First resistor; R2. Second resistor; R3. Third resistor Resistors: R4, fourth resistor; R5, fifth resistor; R6, sixth resistor; R7, seventh resistor; R8, eighth resistor; R9, ninth resistor; R10, tenth resistor; R11, eleventh resistor; R13, thirteenth resistor; C1, first capacitor; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; C5, fifth capacitor; C6, sixth capacitor; C7, seventh capacitor; C9, ninth capacitor; C10, tenth capacitor; ZD1, Zener diode; D1, first diode; D2, second diode; D3, third diode; D4, fourth diode; VCC1, first external power supply; VCC2, second external power supply; VCC3, third external power supply. Detailed Implementation

[0022] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0025] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0026] In this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal connection of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] Currently, push-pull wire welding guns are a type of welding equipment, particularly suitable for welding aluminum and aluminum alloys. They feed the welding wire into the welding area by pushing and pulling the wire, thereby achieving high-quality welding results.

[0028] However, since the interfaces and control signal types of each welding gun are different, a corresponding circuit needs to be designed separately for each type of welding gun to form the power supply and control of the welding gun. This not only makes it impossible to form a standardized product, but also consumes a lot of production and development time. At the same time, when using the welding gun, it is also necessary to find a power supply control adapter circuit that matches the welding gun. The management of the welding gun and the adapter circuit also consumes a lot of manpower and resources.

[0029] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the adapter circuit for a multi-push-pull wire welding torch provided in one embodiment of this application. The adapter circuit for the multi-push-pull wire welding torch provided in this embodiment includes: a multi-voltage output circuit 101 and a control circuit 102.

[0030] The system includes a multi-voltage output circuit 101, whose input terminal is connected to a first external power supply VCC1. The first output terminal of the multi-voltage output circuit 101 is used to output a first voltage, the second output terminal is used to output a second voltage, the third output terminal is used to output a third voltage, and the fourth output terminal is used to output a fourth voltage. A control circuit 102 has its input terminal used to input control signals. The first output terminal of the control circuit 102 is connected to a first type of push-pull wire welding gun, and the second output terminal is connected to a second type of push-pull wire welding gun. The first type of push-pull wire welding gun is an analog signal controlled push-pull wire welding gun, and the second type of push-pull wire welding gun is a digital signal controlled push-pull wire welding gun.

[0031] The first voltage can be 26V, the second voltage can be 0V, the third voltage can be 13V, and the fourth voltage can be 26V.

[0032] In this way, the multi-voltage output circuit 101 can provide power to various push-pull wire welding guns, and the control circuit can control both digital and analog push-pull wire welding guns. This allows the adapter circuit for multiple push-pull wire welding guns to be compatible with various models, eliminating the need to design a separate adapter circuit for each type of push-pull wire welding gun. This increases the functionality of the adapter circuit, moving beyond a single circuit for a single gun; different push-pull wire welding guns can be used depending on the welding process.

[0033] Specifically, the control circuit includes an inductor circuit 201, an analog signal control circuit 202, and a digital signal control circuit 203.

[0034] In this circuit, one end of the inductor circuit 201 serves as the input terminal of the control circuit for inputting control signals, and the other end of the inductor circuit 201 is connected to the input terminal of the analog signal control circuit 202. The output terminal of the analog signal control circuit 202 serves as the first output terminal of the control circuit and is connected to the first type of push-pull wire welding gun. The other end of the inductor circuit 201 is also connected to the input terminal of the digital signal control circuit 203, and the output terminal of the digital signal control circuit 203 serves as the second output terminal of the control circuit and is connected to the second type of push-pull wire welding gun.

[0035] Specifically, the analog signal control circuit 202 includes a dual operational amplifier sub-circuit 204, a first optocoupler sub-circuit 205, and an operational amplifier sub-circuit.

[0036] In this circuit, the input terminal of the dual operational amplifier sub-circuit 204 is connected to the other end of the inductor circuit 201 as the input terminal of the analog signal control circuit 202. The first output terminal of the dual operational amplifier sub-circuit 204 is connected to the second input terminal of the first optocoupler. The second output terminal of the dual operational amplifier sub-circuit 204 is connected to the first input terminal of the first optocoupler sub-circuit 205. The output terminal of the first optocoupler sub-circuit 205 is connected to the input terminal of the operational amplifier sub-circuit. The output terminal of the operational amplifier sub-circuit is connected to the first type of push-pull wire welding gun as the first output terminal of the control circuit.

[0037] Specifically, the dual operational amplifier sub-circuit 204 includes a first resistor R1, a second resistor R2, and a dual operational amplifier chip 207.

[0038] In this circuit, one end of the first resistor R1 serves as the input terminal of the dual operational amplifier sub-circuit 204 and is connected to the other end of the inductor circuit 201. The other end of the first resistor R1 is connected to the first non-inverting input terminal of the dual operational amplifier chip 207. The first output terminal of the dual operational amplifier chip 207 is connected to the first inverting input terminal of the dual operational amplifier chip 207. The output terminal of the dual operational amplifier chip 207 is also connected to one end of the second resistor R2. The other end of the second resistor R2 is connected to the second inverting input terminal of the dual operational amplifier chip 207. The second non-inverting input terminal of the dual operational amplifier chip 207 is grounded. The output terminal of the dual operational amplifier chip 207 serves as the second output terminal of the dual operational amplifier sub-circuit 204 and is connected to the first input terminal 1 of the first optocoupler sub-circuit 205. The other end of the second resistor R2 serves as the first output terminal of the dual operational amplifier sub-circuit 204 and is connected to the second input terminal of the first optocoupler sub-circuit 205.

[0039] Specifically, the first optocoupler sub-circuit 205 includes a first capacitor C1, a third resistor R3, and a first optocoupler 208.

[0040] In this circuit, one end of the third resistor R3 serves as the first input terminal of the first optocoupler sub-circuit 205 and is connected to the second output terminal of the dual operational amplifier sub-circuit 204. The other end of the third resistor R3 is connected to pin 1 of the first optocoupler. Pin 2 of the first optocoupler 208 is connected to the second external power supply VCC2. Pin 3 of the first optocoupler serves as the second input terminal of the first optocoupler sub-circuit 205 and is connected to the first output terminal of the dual operational amplifier sub-circuit 204. Pin 4 of the first optocoupler is grounded, pin 5 of the first optocoupler is grounded, and pin 6 of the first optocoupler serves as the output terminal 6 of the first optocoupler sub-circuit 205 and is connected to the input terminal of the operational amplifier sub-circuit.

[0041] Specifically, the operational amplifier sub-circuit 206 includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, an operational amplifier, and a first diode D1.

[0042] In this circuit, the inverting input of operational amplifier 209 is connected to the output of the first optocoupler sub-circuit 205, serving as the input of the operational amplifier sub-circuit. The non-inverting input of the operational amplifier is grounded and also connected to one end of the second capacitor C2. The other end of the second capacitor C2 is connected to the second external power supply VCC2. The inverting input of the operational amplifier is also connected to one end of the fourth resistor R4. The other end of the fourth resistor R4 is connected to the output of the operational amplifier. One end of the third capacitor C3 is connected to one end of the fourth resistor R4, and the other end of the third capacitor C3... The other end of the fourth resistor R4 is connected to the other end of the fifth resistor R5, the other end of the fifth resistor R5 is connected to the other end of the third capacitor C3, the other end of the fifth resistor R5 is connected to the other end of the fourth capacitor C4, the other end of the fourth capacitor C4 is grounded, the other end of the fourth capacitor C4 is connected to the other end of the sixth resistor R6, the other end of the fourth capacitor C4 is connected to the other end of the sixth resistor R6, the other end of the sixth resistor R6 is also connected to the positive terminal of the first diode D1, the negative terminal of the first diode D1 is connected to the external power supply, and the other end of the sixth resistor R6 is connected to the first type of push-pull wire welding gun as the output terminal of the operational amplifier sub-circuit.

[0043] The voltage provided by the second external power supply VCC2 can be +5V.

[0044] Specifically, the digital signal control circuit 203 includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a fifth capacitor C5, and a second optocoupler 210.

[0045] In this circuit, one end of the seventh resistor R7 serves as the input terminal of the digital signal control circuit 203 and is connected to the other end of the inductor circuit 201. The other end of the seventh resistor R7 is connected to the first end of the second optocoupler 210, the second end of the second optocoupler 210 is grounded, the third end of the second optocoupler 210 is connected to the second external power supply VCC2, the fourth end of the second optocoupler 210 is connected to one end of the eighth resistor R8, the other end of the eighth resistor R8 serves as the output terminal of the digital signal control circuit 203 and is connected to the second type of push-pull wire welding gun, one end of the fifth capacitor C5 is connected to one end of the eighth resistor R8, the other end of the fifth capacitor C5 is grounded, one end of the ninth resistor R9 is connected to one end of the fifth capacitor C5, and the other end of the ninth resistor R9 is connected to the other end of the fifth capacitor C5.

[0046] The adapter circuit for the multi-push-pull wire welding gun also includes a first protection circuit 211 and a second protection circuit 212.

[0047] In this circuit, one end of the first protection circuit 211 is connected to the other end of the first resistor R1, the other end of the first protection circuit 211 is connected to the first non-inverting input terminal of the dual operational amplifier chip 207, one end of the second protection circuit 212 is connected to the other end of the inductor circuit 201, and the other end of the second protection circuit 212 is grounded.

[0048] Specifically, the first protection circuit 211 includes a Zener diode ZD1, a tenth resistor R10, and a sixth capacitor C6. One end of the tenth resistor R10 serves as one end of the first protection circuit 211 and is connected to the other end of the first resistor R10. The other end of the tenth resistor R10 is grounded. One end of the sixth capacitor C6 is connected to one end of the tenth resistor R10. The other end of the sixth capacitor C6 is grounded. One end of the sixth capacitor C6 serves as the other end of the first protection circuit 211 and is connected to the first non-inverting input terminal of the dual operational amplifier chip 207. The cathode of the Zener diode ZD1 is connected to one end of the tenth resistor R10, and the cathode of the Zener diode ZD1 is connected to the other end of the tenth resistor R10.

[0049] Specifically, the second protection circuit 212 includes an eleventh resistor R11 and a seventh capacitor C7; wherein, one end of the eleventh resistor R11 is connected to the other end of the inductor circuit 201 as one end of the first protection circuit 211, and the other end of the eleventh resistor R11 is grounded; one end of the seventh capacitor C7 is connected to one end of the eleventh resistor R11, and the other end of the seventh capacitor C7 is grounded.

[0050] For example, please refer to Figure 2 , Figure 2This is a schematic diagram of the control circuit provided in one embodiment of the present application. The control circuit provided in this embodiment includes: an inductor circuit 201, an analog signal control circuit 202, a digital signal control circuit 203, a first protection circuit 211, a second protection circuit 212, and a third protection circuit 213. The first protection circuit 211 includes a Zener diode ZD1, a tenth resistor R10, and a sixth capacitor C6; the second protection circuit 212 includes an eleventh resistor R11 and a seventh capacitor C7; the third protection circuit 213 includes a twelfth resistor and an eighth capacitor; the analog signal control circuit 202 includes a dual operational amplifier sub-circuit 204, a first optocoupler sub-circuit 205, and a dual operational amplifier sub-circuit 204; the digital signal control circuit 203 includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a fifth capacitor C5, and a second optocoupler 210; the dual operational amplifier sub-circuit 204 includes a first resistor R1, a second resistor R2, and a dual operational amplifier chip 207; the first optocoupler sub-circuit 205 includes a first capacitor C1, a third resistor R3, and a first optocoupler; the operational amplifier sub-circuit includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, an operational amplifier, and a first diode D1.

[0051] Specifically, one end of the inductor circuit 201 serves as the input terminal of the control circuit for inputting control signals, and the other end of the inductor circuit 201 is connected to the input terminal of the analog signal control circuit 202. The output terminal of the analog signal control circuit 202 serves as the first output terminal of the control circuit and is connected to the first type of push-pull wire welding gun. The other end of the inductor circuit 201 is also connected to the input terminal of the digital signal control circuit 203, and the output terminal of the digital signal control circuit 203 serves as the second output terminal of the control circuit and is connected to the second type of push-pull wire welding gun.

[0052] In this circuit, the input terminal of the dual operational amplifier sub-circuit 204 is connected to the other end of the inductor circuit 201 as the input terminal of the analog signal control circuit 202. The first output terminal of the dual operational amplifier sub-circuit 204 is connected to the second input terminal of the first optocoupler. The second output terminal of the dual operational amplifier sub-circuit 204 is connected to the first input terminal of the first optocoupler sub-circuit 205. The output terminal of the first optocoupler sub-circuit 205 is connected to the input terminal of the operational amplifier sub-circuit. The output terminal of the operational amplifier sub-circuit is connected to the first type of push-pull wire welding gun as the first output terminal of the control circuit.

[0053] In this circuit, one end of the first resistor R1 serves as the input terminal of the dual operational amplifier sub-circuit 204 and is connected to the other end of the inductor circuit 201. The other end of the first resistor R1 is connected to the first non-inverting input terminal of the dual operational amplifier chip 207. The first output terminal of the dual operational amplifier chip 207 is connected to the first inverting input terminal of the dual operational amplifier chip 207. The output terminal of the dual operational amplifier chip 207 is also connected to one end of the second resistor R2. The other end of the second resistor R2 is connected to the second inverting input terminal of the dual operational amplifier chip 207. The second non-inverting input terminal of the dual operational amplifier chip 207 is grounded. The output terminal of the dual operational amplifier chip 207 serves as the second output terminal of the dual operational amplifier sub-circuit 204 and is connected to the first input terminal 1 of the first optocoupler sub-circuit 205. The other end of the second resistor R2 serves as the first output terminal of the dual operational amplifier sub-circuit 204 and is connected to the second input terminal of the first optocoupler sub-circuit 205.

[0054] In this circuit, one end of the third resistor R3 serves as the first input terminal of the first optocoupler sub-circuit 205 and is connected to the second output terminal of the dual operational amplifier sub-circuit 204. The other end of the third resistor R3 is connected to pin 1 of the first optocoupler. Pin 2 of the first optocoupler is connected to an external power supply. Pin 3 of the first optocoupler serves as the second input terminal of the first optocoupler sub-circuit 205 and is connected to the first output terminal of the dual operational amplifier sub-circuit 204. Pin 4 of the first optocoupler is grounded. Pin 5 of the first optocoupler is grounded. Pin 6 of the first optocoupler serves as the output terminal 6 of the first optocoupler sub-circuit 205 and is connected to the input terminal of the operational amplifier sub-circuit.

[0055] In this circuit, the inverting input of the operational amplifier is connected to the output of the first optocoupler sub-circuit 205, serving as the input of the operational amplifier sub-circuit. The non-inverting input of the operational amplifier is grounded and also connected to one end of the second capacitor C2. The other end of the second capacitor C2 is connected to an external power supply. The inverting input of the operational amplifier is also connected to one end of the fourth resistor R4. The other end of the fourth resistor R4 is connected to the output of the operational amplifier. One end of the third capacitor C3 is connected to one end of the fourth resistor R4, and the other end of the third capacitor C3 is connected to the fourth resistor R4. The other end is connected to the fifth resistor R5, one end of which is connected to the other end of the third capacitor C3. The other end of the fifth resistor R5 is connected to one end of the fourth capacitor C4. The other end of the fourth capacitor C4 is grounded. One end of the fourth capacitor C4 is connected to one end of the sixth resistor R6. The other end of the fourth capacitor C4 is connected to the other end of the sixth resistor R6. One end of the sixth resistor R6 is also connected to the positive terminal of the first diode D1. The negative terminal of the first diode D1 is connected to the third external power supply VCC3. One end of the sixth resistor R6 is connected to the first type of push-pull wire welding gun as the output terminal of the operational amplifier sub-circuit.

[0056] In this circuit, one end of the seventh resistor R7 serves as the input terminal of the digital signal control circuit 203 and is connected to the other end of the inductor circuit 201. The other end of the seventh resistor R7 is connected to the first end of the second optocoupler 210. The second end of the first optocoupler is grounded. The third end of the first optocoupler is connected to an external power supply. The fourth end of the second optocoupler 210 is connected to one end of the eighth resistor R8. The other end of the eighth resistor R8 serves as the output terminal of the digital signal control circuit 203 and is connected to the second type of push-pull wire welding gun. One end of the fifth capacitor C5 is connected to one end of the eighth resistor R8. The other end of the fifth capacitor C5 is grounded. One end of the ninth resistor R9 is connected to one end of the fifth capacitor C5. The other end of the ninth resistor R9 is connected to the other end of the fifth capacitor C5.

[0057] In this circuit, one end of the first protection circuit 211 is connected to the other end of the first resistor R1, and the other end of the first protection circuit 211 is connected to the first non-inverting input terminal of the dual operational amplifier chip 207. One end of the second protection circuit 212 is connected to the other end of the inductor circuit 201, and the other end of the second protection circuit 212 is grounded. One end of the third protection circuit 213 is connected to the positive terminal of the first diode D1, and the other end of the third protection circuit 213 is grounded.

[0058] In this circuit, one end of the tenth resistor R10 is connected to the other end of the first resistor R1 as one end of the first protection circuit 211, and the other end of the tenth resistor R10 is grounded. One end of the sixth capacitor C6 is connected to one end of the tenth resistor R10, and the other end of the sixth capacitor C6 is grounded. One end of the sixth capacitor C6 is connected to the first non-inverting input terminal of the dual operational amplifier chip 207 as the other end of the first protection circuit 211. The negative terminal of the Zener diode ZD1 is connected to one end of the tenth resistor R10, and the negative terminal of the Zener diode ZD1 is connected to the other end of the tenth resistor R10.

[0059] Among them, one end of the eleventh resistor R11 is connected to the other end of the inductor circuit 201 as one end of the first protection circuit 211, and the other end of the eleventh resistor R11 is grounded. One end of the seventh capacitor C7 is connected to one end of the eleventh resistor R11, and the other end of the seventh capacitor C7 is grounded.

[0060] In this circuit, one end of the twelfth resistor is connected to the positive terminal of the first diode D1 as one end of the third protection circuit 213, and the other end of the twelfth resistor is grounded. One end of the eighth capacitor is connected to one end of the twelfth resistor, and the other end of the twelfth resistor is grounded.

[0061] As an example, please continue to refer to Figure 2When the welding torch needs to be controlled by an analog signal, an analog control signal can be input at the input terminal of the control circuit. Through the amplification of the analog signal control circuit 202 and the conversion of the optocoupler, the target analog control signal is output through the first output terminal to control the first type of push-pull wire welding torch.

[0062] In some embodiments, multiple analog signal control circuits 202 can be set in the control circuit to form multiple first output terminals to realize the overall control of multiple first type push-pull wire welding guns. In this way, when multiple workers need to control the first type push-pull wire welding guns, the push-pull wire welding guns can be connected to one first output terminal.

[0063] As an example, please continue to refer to Figure 2 When the welding torch needs to be controlled by a digital signal, a digital signal can be input at the input terminal of the control circuit. Through the amplification of the digital signal control circuit 203 and the conversion of the optocoupler, the target digital control signal is output through the second output terminal to control the second type of push-pull wire welding torch.

[0064] In some embodiments, multiple digital signal control circuits 203 can be set in the control circuit to form multiple second output terminals to realize the overall control of multiple second type push-pull wire welding guns. In this way, when multiple workers need to control the second type push-pull wire welding guns, the push-pull wire welding guns can be connected to one second output terminal.

[0065] In this way, the control circuit can control both types of push-pull wire welding guns, eliminating the need to design an adapter circuit for each type of welding gun. This also facilitates production, reduces development time, and allows for the addition of multiple adapter circuits to support multiple welding guns, increasing the machine's functionality. It is no longer a matter of dedicated machines for dedicated guns, and operators can also change to different types of guns according to different welding processes without being limited by adapter circuits.

[0066] Specifically, the multi-voltage output circuit 101 includes a rectifier bridge, a first single-pole double-throw switch 302, a second single-pole double-throw switch 303, a thirteenth resistor R13, a ninth capacitor C9, and a tenth capacitor C10.

[0067] In this circuit, one end of the thirteenth resistor R13 serves as the input terminal of the multi-voltage output circuit 101 and is connected to the first external power supply VCC1. The other end of the thirteenth resistor R13 is grounded. One end of the thirteenth resistor R13 is also connected to the fourth terminal of the rectifier bridge. The second terminal of the rectifier bridge serves as the first output terminal of the multi-voltage output circuit 101 for outputting the first voltage. The other end of the thirteenth resistor R13 is connected to the stationary terminal of the first single-pole double-throw switch 302. The first moving terminal of the first single-pole double-throw switch 302 serves as the second output terminal of the multi-voltage output circuit 101 for outputting the second voltage. The second moving terminal of the first single-pole double-throw switch 302 is connected to the first terminal of the rectifier bridge. The third terminal of the rectifier bridge is connected to the stationary terminal of the second single-pole double-throw switch 303. The first moving terminal of the second single-pole double-throw switch 303 serves as the third output terminal of the multi-voltage output circuit 101 for outputting the third voltage. The second moving terminal of the second single-pole double-throw switch 303 serves as the fourth output terminal of the multi-voltage output circuit 101 for outputting the fourth voltage.

[0068] For example, please refer to Figure 3 , Figure 3 This is a schematic diagram of a multi-voltage output circuit 101 provided in one embodiment of this application. The multi-voltage output circuit 101 provided in this embodiment includes: a rectifier bridge, a first single-pole double-throw switch 302, a second single-pole double-throw switch 303, a thirteenth resistor R13, a ninth capacitor C9, and a tenth capacitor C10. The rectifier bridge includes a second diode D2, a third diode D3, a fourth diode D4, and a fifth diode.

[0069] In this rectifier bridge, the positive terminal of the second diode D2 is connected to the positive terminal of the fifth diode, and a first connection point is formed between the positive terminals of the second diode D2 and the fifth diode as the first end of the rectifier bridge. The negative terminal of the second diode D2 is connected to the positive terminal of the third diode D3, and a second connection point is formed between the negative terminal of the second diode D2 and the positive terminal of the third diode D3 as the second end of the rectifier bridge. The negative terminal of the fifth diode is connected to the positive terminal of the fourth diode D4, and a third connection point is formed between the negative terminal of the fifth diode and the positive terminal of the fourth diode D4 as the third end of the rectifier bridge. The negative terminal of the third diode D3 is connected to the negative terminal of the fourth diode D4, and a fourth connection point is formed between the negative terminals of the third diode D3 and the negative terminal of the fourth diode D4 as the fourth end of the rectifier bridge 301.

[0070] In this circuit, one end of the thirteenth resistor R13 serves as the input terminal of the multi-voltage output circuit 101 and is connected to the first external power supply VCC1. The other end of the thirteenth resistor R13 is grounded. One end of the thirteenth resistor R13 is connected to the fourth terminal of the rectifier bridge, and the second terminal of the rectifier bridge serves as the first output terminal of the multi-voltage output circuit 101 for outputting the first voltage. The other end of the thirteenth resistor R13 is connected to the stationary terminal of the first single-pole double-throw switch 302, and the first moving terminal of the first single-pole double-throw switch 302 serves as the second output terminal of the multi-voltage output circuit 101 for outputting the second voltage. The second moving terminal of the first single-pole double-throw switch 302 is connected to the first terminal of the rectifier bridge, and the third terminal of the rectifier bridge is connected to the stationary terminal of the second single-pole double-throw switch 303. The first moving terminal of the second single-pole double-throw switch 303 serves as the third output terminal of the multi-voltage output circuit 101 for outputting the third voltage, and the second moving terminal of the second single-pole double-throw switch 303 serves as the fourth output terminal of the multi-voltage output circuit 101 for outputting the fourth voltage.

[0071] As an example, the voltage required for push-pull wire welding torches is typically 0V, 13V, and 26V, etc. Please continue to refer to [the relevant documentation / reference]. Figure 3 The multi-voltage output circuit 101 can be configured to output AC26V at its first output terminal, 0V at its second output terminal, AC13V at its third output terminal, and AC26V at its fourth output terminal.

[0072] Specifically, when the push-pull wire welding gun needs to input a voltage of 0V-26V, the stationary terminal of the first single-pole double-throw switch 302 can be connected to the first moving terminal. At this time, the first output terminal of the multi-voltage output circuit 101 outputs 26V, and the second output terminal of the multi-voltage output circuit 101 outputs 0V.

[0073] When the push-pull wire welding torch needs to be connected to 13V and 26V voltage, the stationary terminal of the first single-pole double-throw switch 302 can be connected to the second moving terminal, and the stationary terminal of the second single-pole double-throw switch 303 can be connected to the first moving terminal. At this time, the first output terminal of the multi-voltage output circuit 101 outputs 26V, and the third output terminal of the multi-voltage output circuit 101 outputs 13V voltage.

[0074] When the push-pull wire welding torch needs to be connected to dual 26V voltage, the stationary terminal of the first single-pole double-throw switch 302 can be connected to the second moving terminal, and the stationary terminal of the second single-pole double-throw switch 303 can be connected to the second moving terminal. At this time, the first output terminal of the multi-voltage output circuit 101 outputs 26V, and the fourth output terminal of the multi-voltage output circuit 101 outputs 26V voltage.

[0075] In this way, the operator can control the two single-pole double-throw switches according to the needs of different types of push-pull wire welding guns, and connect them to the corresponding output terminals to provide the power required by different types of push-pull wire welding guns.

[0076] The adapter circuit for the multi-push-pull wire welding gun in the above embodiment outputs multiple voltages through the multi-voltage output circuit 101 and analog control signals and digital control signals through the control circuit. This provides signal control and power supply for various push-pull wire welding guns, enabling the creation of standardized circuit products compatible with multiple welding guns. This reduces the production and development time for adapter circuits for individual welding guns and reduces the manpower and resources consumed in managing welding guns and adapter circuits. Please note that the above embodiments are for illustrative purposes only and do not imply limitation of this utility model.

[0077] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A multi-push-pull wire welding gun adaptation circuit, characterized by, include: A multi-voltage output circuit, wherein the input terminal of the multi-voltage output circuit is connected to a first external power supply, the first output terminal of the multi-voltage output circuit is used to output a first voltage, the second output terminal of the multi-voltage output circuit is used to output a second voltage, the third output terminal of the multi-voltage output circuit is used to output a third voltage, and the fourth output terminal of the multi-voltage output circuit is used to output a fourth voltage. The control circuit has an input terminal for inputting control signals, a first output terminal connected to a first type of push-pull wire welding gun, and a second output terminal connected to a second type of push-pull wire welding gun. The first type of push-pull wire welding gun is an analog signal controlled push-pull wire welding gun, and the second type of push-pull wire welding gun is a digital signal controlled push-pull wire welding gun.

2. The adaptation circuit of claim 1, wherein, The control circuit includes an inductor circuit, an analog signal control circuit, and a digital signal control circuit; In this circuit, one end of the inductor circuit serves as the input terminal of the control circuit for inputting control signals, and the other end of the inductor circuit is connected to the input terminal of the analog signal control circuit. The output terminal of the analog signal control circuit serves as the first output terminal of the control circuit and is connected to the first type of push-pull wire welding gun. The other end of the inductor circuit is also connected to the input terminal of the digital signal control circuit, and the output terminal of the digital signal control circuit is connected to the second type of push-pull wire welding gun as the second output terminal of the control circuit.

3. The adaptation circuit of claim 2, wherein, The analog signal control circuit includes a dual operational amplifier sub-circuit, a first optocoupler sub-circuit, and an operational amplifier sub-circuit. Wherein, the input terminal of the dual operational amplifier sub-circuit serves as the input terminal of the analog signal control circuit and is connected to the other end of the inductor circuit; the first output terminal of the dual operational amplifier sub-circuit is connected to the second input terminal of the first optocoupler; the second output terminal of the dual operational amplifier sub-circuit is connected to the first input terminal of the first optocoupler sub-circuit; the output terminal of the first optocoupler sub-circuit is connected to the input terminal of the operational amplifier sub-circuit; and the output terminal of the operational amplifier sub-circuit serves as the first output terminal of the control circuit and is connected to the first type of push-pull wire welding gun.

4. The adaptation circuit of claim 3, characterized in that The dual operational amplifier sub-circuit includes a first resistor, a second resistor, and a dual operational amplifier chip; In this circuit, one end of the first resistor serves as the input terminal of the dual operational amplifier sub-circuit and is connected to the other end of the inductor circuit. The other end of the first resistor is connected to the first non-inverting input terminal of the dual operational amplifier chip. The first output terminal of the dual operational amplifier chip is connected to the first inverting input terminal of the dual operational amplifier chip. The output terminal of the dual operational amplifier chip is also connected to one end of the second resistor. The other end of the second resistor is connected to the second inverting input terminal of the dual operational amplifier chip. The second non-inverting input terminal of the dual operational amplifier chip is grounded. The output terminal of the dual operational amplifier chip serves as the second output terminal of the dual operational amplifier sub-circuit and is connected to the first input terminal of the first optocoupler sub-circuit. The other end of the second resistor serves as the first output terminal of the dual operational amplifier sub-circuit and is connected to the second input terminal of the first optocoupler sub-circuit.

5. The adaptation circuit of claim 3, wherein, The first optocoupler sub-circuit includes a first capacitor, a third resistor, and a first optocoupler; One end of the third resistor is connected to the second output of the dual operational amplifier subcircuit as the first input terminal of the first optocoupler subcircuit. The other end of the third resistor is connected to pin 1 of the first optocoupler. Pin 2 of the first optocoupler is connected to the second external power supply. Pin 3 of the first optocoupler is connected to the first output of the dual operational amplifier subcircuit as the second input terminal of the first optocoupler subcircuit. Pin 4 of the first optocoupler is grounded. Pin 5 of the first optocoupler is grounded. Pin 6 of the first optocoupler is connected to the input of the operational amplifier subcircuit as the output terminal of the first optocoupler subcircuit.

6. The adaptation circuit of claim 3, wherein, The operational amplifier sub-circuit includes a fourth resistor, a fifth resistor, a sixth resistor, a second capacitor, a third capacitor, a fourth capacitor, an operational amplifier, and a first diode; In this configuration, the inverting input terminal of the operational amplifier is connected to the output terminal of the first optocoupler sub-circuit, serving as the input terminal of the operational amplifier sub-circuit. The non-inverting input terminal of the operational amplifier is grounded. The non-inverting input terminal is also connected to one end of a second capacitor, the other end of which is connected to a second external power supply. The inverting input terminal is also connected to one end of a fourth resistor, the other end of which is connected to the output terminal of the operational amplifier. One end of a third capacitor is connected to one end of the fourth resistor, the other end of which is connected to the other end of the fourth resistor. One end of a fifth resistor is connected to the other end of the third capacitor, the other end of which is connected to one end of the fourth capacitor, the other end of which is grounded. One end of the fourth capacitor is connected to one end of a sixth resistor, the other end of which is connected to the other end of the sixth resistor. One end of the sixth resistor is also connected to the anode of the first diode, the cathode of which is connected to a third external power supply. One end of the sixth resistor serves as the output terminal of the operational amplifier sub-circuit and is connected to a first type of push-pull wire welding gun.

7. The adaptation circuit of claim 2, wherein, The digital signal control circuit includes a seventh resistor, an eighth resistor, a ninth resistor, a fifth capacitor, and a second optocoupler; Wherein, one end of the seventh resistor serves as the input terminal of the digital signal control circuit and is connected to the other end of the inductor circuit; the other end of the seventh resistor is connected to the first end of the second optocoupler; the second end of the second optocoupler is grounded; the third end of the second optocoupler is connected to the second external power supply; the fourth end of the second optocoupler is connected to one end of the eighth resistor; the other end of the eighth resistor serves as the output terminal of the digital signal control circuit and is connected to the second type of push-pull wire welding gun; one end of the fifth capacitor is connected to one end of the eighth resistor; the other end of the fifth capacitor is grounded; one end of the ninth resistor is connected to one end of the fifth capacitor; and the other end of the ninth resistor is connected to the other end of the fifth capacitor.

8. The adapter circuit according to claim 4, characterized in that, It also includes a first protection circuit and a second protection circuit; In this circuit, one end of the first protection circuit is connected to the other end of the first resistor, the other end of the first protection circuit is connected to the first non-inverting input terminal of the dual operational amplifier chip, one end of the second protection circuit is connected to the other end of the inductor circuit, and the other end of the second protection circuit is grounded.

9. The adaptation circuit according to claim 8, characterized in that The first protection circuit includes a Zener diode, a tenth resistor, and a sixth capacitor. One end of the tenth resistor serves as one end of the first protection circuit and is connected to the other end of the first resistor. The other end of the tenth resistor is grounded. One end of the sixth capacitor is connected to one end of the tenth resistor. The other end of the sixth capacitor is grounded. One end of the sixth capacitor serves as the other end of the first protection circuit and is connected to the first non-inverting input terminal of the dual operational amplifier chip. The cathode of the Zener diode is connected to one end of the tenth resistor, and the cathode of the Zener diode is connected to the other end of the tenth resistor. The second protection circuit includes an eleventh resistor and a seventh capacitor; wherein, one end of the eleventh resistor serves as one end of the first protection circuit and is connected to the other end of the inductor circuit, the other end of the eleventh resistor is grounded, one end of the seventh capacitor is connected to one end of the eleventh resistor, and the other end of the seventh capacitor is grounded.

10. The adaptation circuit of claim 1, wherein, The multi-voltage output circuit includes a rectifier bridge, a first single-pole double-throw switch, a second single-pole double-throw switch, a thirteenth resistor, a ninth capacitor, and a tenth capacitor; In this circuit, one end of the thirteenth resistor serves as the input terminal of the multi-voltage output circuit and is connected to the first external power supply. The other end of the thirteenth resistor is grounded. One end of the thirteenth resistor is also connected to the fourth terminal of the rectifier bridge. The second terminal of the rectifier bridge serves as the first output terminal of the multi-voltage output circuit for outputting a first voltage. The other end of the thirteenth resistor is connected to the stationary terminal of the first single-pole double-throw switch. The first moving terminal of the first single-pole double-throw switch serves as the second output terminal of the multi-voltage output circuit for outputting a second voltage. The second moving terminal of the first single-pole double-throw switch is connected to the first terminal of the rectifier bridge. The third terminal of the rectifier bridge is connected to the stationary terminal of the second single-pole double-throw switch. The first moving terminal of the second single-pole double-throw switch serves as the third output terminal of the multi-voltage output circuit for outputting a third voltage. The second moving terminal of the second single-pole double-throw switch serves as the fourth output terminal of the multi-voltage output circuit for outputting a fourth voltage.

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