Load double-wire-feeding-mechanism device of dioxide welding machine and operation method of load double-wire-feeding-mechanism device

Abstract

The invention discloses a load double-wire-feeding-mechanism device of a dioxo welding machine and an operation method. The load double-wire-feeding-mechanism device comprises a control cabinet, a dioxo welding machine body arranged in a frame, two wire feeding mechanisms and a ground wire mechanism arranged at the grounding end of the dioxo welding machine body. The gas circuit of the dioxo welding machine main body is connected with the two welding gun mechanisms, and a welding power supply module and a gas flow control module are arranged in the dioxo welding machine main body and used for controlling the welding gun mechanisms; the welding power supply module is used for providing welding electric energy; the gas flow control module is used for controlling the flow of carbon dioxide protective gas; a control circuit module is arranged in the control cabinet and electrically connected with the wire feeding mechanism, the welding power source module and the gas flow controller, and all the parts are cooperatively controlled according to preset welding parameters and actual welding conditions. The action waste of operators is reduced, the dioxo welding machine body, the wire feeding mechanisms, the relay and the like are adopted to form a loop, the effect that one dioxo welding machine body loads two wire feeding mechanisms is achieved, and the operability and efficiency are improved.

Description

Technical Field

[0001] This invention belongs to the technical field of welding equipment, specifically a load-bearing double wire feeding mechanism device and its operation method for a carbon dioxide welding machine. Background Technology

[0002] Carbon dioxide gas shielded welding machines (CO2 welding machines) are widely used in industrial production as a high-efficiency and low-cost welding equipment. However, traditional CO2 welding machines have some obvious defects and shortcomings when dealing with complex welding tasks and special welding process requirements.

[0003] Traditional MCO welding machines typically only have one wire feeding mechanism. This single mechanism is insufficient for complex welding tasks or special welding process requirements. For example, in welding large workpieces or scenarios requiring rapid weld filling, the wire feeding speed of a single mechanism is insufficient, limiting welding efficiency, extending welding time, and impacting production efficiency. In a fast-paced 52-second production cycle, the operator's return motion to the MCO welding machine takes 1 second per machine, significantly affecting production efficiency. Summary of the Invention

[0004] In response to the aforementioned problems, this invention proposes a dual-wire feeding mechanism device and operating method for a CO2 welding machine. The dual-wire feeding mechanism design addresses the issues of low efficiency, poor adaptability to welding materials, and inability to meet special welding process requirements in existing CO2 welding machines during complex welding tasks. This invention aims to improve welding efficiency, enhance adaptability to different welding materials, and meet the requirements of special welding processes.

[0005] The specific technical solution of the present invention is as follows:

[0006] A dual wire feeding mechanism device for a carbon dioxide welding machine includes a control cabinet, a carbon dioxide welding machine body housed in a frame, two wire feeding mechanisms, and a grounding mechanism installed at the grounding end of the carbon dioxide welding machine body.

[0007] The main gas circuit of the CO2 welding machine is connected to two welding torch mechanisms. The main body of the CO2 welding machine is equipped with a welding power module and a gas flow control module for controlling the welding torch mechanism. The welding power module is used to provide welding power, and the gas flow control module is used to control the flow rate of carbon dioxide shielding gas.

[0008] The control cabinet is equipped with a control circuit module, which is electrically connected to the wire feeding mechanism, the welding power supply module and the gas flow control, and performs coordinated control of each part according to the preset welding parameters and the actual welding situation.

[0009] Preferably, the two wire feeding mechanisms are installed on both sides of the main body of the MCO welding machine and connected to the control circuit module through independent control lines to achieve individual control of wire feeding speed and start / stop.

[0010] Preferably, the two wire feeding mechanisms are respectively connected to the main body of the O2 welding machine via a six-core cable, a positive cable, a negative cable, and a mixed gas pipeline, wherein:

[0011] The positive cable, negative cable, and mixed gas pipeline are connected in parallel to the two wire feeding mechanisms.

[0012] The control circuit module is connected to the six-core cable, the welding gun switch control line of the welding gun mechanism, and the control cabinet signal cable of the control cabinet through relays M1, M2, M3, M4 and their corresponding contact terminals to realize the start and stop control of the wire feeding mechanism and the welding gun mechanism.

[0013] A six-core cable includes a main six-core cable, six-core cable A, and six-core cable B;

[0014] The main six-core cable connects to the main body of the MIG welding machine, six-core cable A connects to the first wire feeding mechanism, and six-core cable B connects to the second wire feeding mechanism.

[0015] More preferably, the relays M1, M2, M3, and M4 are connected as follows:

[0016] The main six-core cable is connected to relays M1 and M2. Wire 1 is connected to the 9th common contact terminal of relay M1, wire 2 is connected to the 12th common contact terminal of relay M1, wire 3 is connected to the 9th common contact terminal of relay M2, wire 4 is connected to the 10th common contact terminal of relay M2, wire 5 is connected to the 11th common contact terminal of relay M2, and wire 6 is connected to the 12th common contact terminal of relay M2.

[0017] The A1-A6 wires of the six-core cable A are connected to the normally closed contact terminals of M1 and M2 respectively;

[0018] The B1-B6 wires of the six-core cable B are connected to the normally open contact terminals of M1 and M2 respectively;

[0019] The control cabinet signal cables are connected in parallel to the coil terminals of M1 and M2, wires 9 and 10 are connected to the coil terminal of M3, and wires 11 and 12 are connected to the coil terminal of M4.

[0020] The A7 and A8 lines of the welding torch switch control line A are connected to the common contact and normally open contact terminal of M3, respectively.

[0021] The B7 and B8 lines of the welding torch switch control line B are connected to the common contact and normally open contact terminal of M4, respectively.

[0022] Preferably, the wire feeding mechanism includes an operating cabinet, the operating cabinet is provided with a mounting frame, and the mounting frame is equipped with a wire feeding motor, a wire feeding wheel assembly, a wire pressing wheel assembly, a wire spool mounting frame, a wire feeding guide tube, and an operating panel;

[0023] The wire feeding wheel assembly includes a driving wheel and a driven wheel. The driving wheel is connected to the output shaft of the wire feeding motor and rotates under the drive of the wire feeding motor, driving the welding wire forward. The wire pressing wheel assembly cooperates with the wire feeding wheel assembly to press the welding wire between the wire feeding wheel assembly. The wire feeding guide guides the welding wire from the wire feeding wheel assembly to the welding gun mechanism.

[0024] The wire spool mounting bracket is used to install the wire spool for replacing the wire. The operation panel controls the speed of the wire feeding motor through the control circuit module.

[0025] Preferably, the welding torch mechanism includes a support three, on which a check valve is installed;

[0026] A second bracket is mounted on the third bracket, and a rotary cylinder is mounted on the second bracket. The rotary cylinder is connected to the air circuit of the check valve.

[0027] The check valve is connected to the nozzle via an air pipe. The nozzle is mounted on the welding torch. The welding torch is mounted on the back plate via clip one and clip two. The back plate is equipped with an anti-splash baffle.

[0028] Preferably, it also includes an automatic cleaning mechanism, which cooperates with the nozzle of the welding torch mechanism;

[0029] The automatic cleaning mechanism includes a support frame, which is connected to a slider via a guide rail. The slider is driven to move vertically by a guide rail motor.

[0030] The second back plate is mounted on the slider by screws one, two, three, and four.

[0031] A motor bracket is installed on the second back plate, the motor is mounted on the motor bracket, and a spring is mounted on the output shaft of the motor.

[0032] Preferably, the grounding mechanism includes a grounding wire connected to the grounding terminal of the main body of the M2 welding machine and a bracket four mounted on the frame;

[0033] The bracket four is connected to the back plate three, the back plate three forms a linear guide rail, and the back plate four is slidably connected to the linear guide rail;

[0034] The two ends of the second spring are respectively connected to the mounting posts provided on the back plate three. The ground wire is fixed to the side of the back plate four by the clip three. One end of the top of the back plate four extends upward to form a ridge, and the ridge is opposite to the end ring of the second spring.

[0035] Another object of the present invention is to provide an operating method for a load-bearing dual wire feeding mechanism of a CO2 welding machine. The method, using the aforementioned load-bearing dual wire feeding mechanism device for a CO2 welding machine, includes the following steps:

[0036] Step 1: Press the start button on the main body of the MCO welding machine to activate the welding power module, gas flow control module, and two wire feeding mechanisms.

[0037] Step 2: Carbon dioxide shielding gas is ejected from the nozzle of the welding torch mechanism at a set flow rate to form a protective gas shield;

[0038] Step 3: One or two wire feeding mechanisms feed the welding wire to the nozzle of the welding torch mechanism at a set speed. The welding power module provides electrical energy to generate an electric arc, which melts the welding wire and the workpiece to form a weld.

[0039] Step 4: After welding is completed, the welding torch mechanism moves to the automatic cleaning mechanism. The automatic cleaning mechanism moves to the welding nozzle position via a linear guide rail, and the spring used for cleaning is driven by a motor to rotate to remove welding slag.

[0040] Furthermore, in the embodiment, when the robot moves to the CO2 welding gun A welding position of the first welding gun mechanism 31, the normally closed contacts of relays M1 and M2 are in the connected state, a wire feeding mechanism 2 works, and the control cabinet signal cable 9 and 10 triggers the coil of relay M3 to be energized, so that the welding gun switch control line A is connected and the CO2 welding gun A welding is started.

[0041] When the robot moves to the CO2 welding gun B welding position of the second welding gun mechanism 31, the control cabinet signal cables 7 and 8 trigger the coils of relays M1 and M2 to be energized, causing the other wire feeding mechanism 2 to work. At the same time, the signal cables 11 and 12 trigger the coil of relay M4 to be energized, starting the CO2 welding gun B welding.

[0042] The beneficial effects of this invention are:

[0043] This design reduces wasted operator movements. Even with limited space and low cost, it utilizes a circuit consisting of a CO2 welding machine body, wire feeding mechanism, limit switches, relays, and a circuit board. This allows one CO2 welding machine body to support two wire feeding mechanisms, improving workability. It occupies little space, has a simple design, low investment cost, and low energy consumption. It can achieve the effect of two CO2 welding machines in a confined space, while reducing operator workload, completely eliminating occupational diseases, and making production more efficient. This mechanism achieves the welding effect of two welding machines, eliminating wasted movement and walking time during operation, as well as wasted auxiliary work time. Attached Figure Description

[0044] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, unless specifically indicated, these drawings are intended only to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0045] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0046] Figure 2 This is a three-dimensional schematic diagram of the wire feeding mechanism;

[0047] Figure 3 This is a 3D schematic diagram of the automatic cleaning mechanism;

[0048] Figure 4 This is a three-dimensional schematic diagram of the grounding mechanism;

[0049] Figure 5 This is a schematic diagram of the electrical connections for the robot workstation control cabinet. Figure 1 ;

[0050] Figure 6 This is a schematic diagram of the electrical connections for the robot workstation control cabinet. Figure 2 ;

[0051] In the picture:

[0052] 1-Control cabinet;

[0053] 2-Wire feeding mechanism; 201-Wire feeding motor; 202-Wire feeding wheel assembly; 203-Wire pressing wheel assembly; 204-Wire spool mounting bracket; 205-Wire feeding guide tube; 206-Operation panel; 207-Operation cabinet; 208-Mounting bracket;

[0054] 31-Welding torch mechanism; 32-Automatic cleaning mechanism;

[0055] 301-Clamp 1; 302-Clamp 2; 303-Welding torch; 304-Back plate 1; 305-Air hose; 306-Nozzle; 307-Bracket 1; 308-Back plate 2; 309-Screw 1; 310-Screw 2; 311-Screw 3; 312-Screw 4; 313-Motor; 314-Spring 1; 315-Motor bracket; 316-Splash guard; 317-Check valve; 318-Rotary cylinder; 319-Bracket 2; 320-Bracket 3;

[0056] 4-Grounding mechanism;

[0057] 401-Spring 2; 402-Ground wire; 403-Clip 3; 404-Linear guide rail; 405-Back plate 3; 406-Bracket 4; 407-Back plate 4;

[0058] 5-Main body of the carbon dioxide welding machine. Detailed Implementation

[0059] First, it should be noted that the specific structure, features, and advantages of the present invention will be described in detail below by way of examples. However, all descriptions are for illustrative purposes only and should not be construed as limiting the present invention in any way. Furthermore, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the accompanying drawings, can still be arbitrarily combined or deleted among these technical features to obtain more other embodiments of the present invention that may not be directly mentioned herein. Additionally, for the sake of simplifying the drawings, the same or similar technical features may be indicated only in one place in the same drawing.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This invention will be described in detail.

[0062] Example 1:

[0063] like Figure 1 As shown, a dual wire feeding mechanism device for a carbon dioxide welding machine includes a control cabinet 1, a carbon dioxide welding machine body 5 housed in a frame, two wire feeding mechanisms 2, and a grounding mechanism 4 installed at the grounding end of the carbon dioxide welding machine body 5.

[0064] The gas circuit of the main body 5 of the O2 welding machine is connected to two welding torch mechanisms 31. The main body 7 of the O2 welding machine is equipped with a welding power module and a gas flow control module for controlling the welding torch mechanism 31. The welding power module is used to provide welding power, and the gas flow control module is used to control the flow of carbon dioxide shielding gas.

[0065] The control cabinet 1 is equipped with a control circuit module, which is electrically connected to the wire feeding mechanism 2, the welding power supply module and the gas flow control, and performs coordinated control of each part according to the preset welding parameters and the actual welding situation.

[0066] In this embodiment, the main body 5 of the CO2 welding machine is equipped with a welding power supply module and a gas flow control module. The welding power supply module provides the electrical energy required for welding; the gas flow control module precisely controls the flow rate of the carbon dioxide shielding gas to ensure that the molten pool is well protected during the welding process; the control circuit module is located in the control cabinet 1 and is electrically connected to two independent wire feeding mechanisms 2, the welding power supply module, and the gas flow control module, respectively, and performs coordinated control of each part according to the preset welding parameters and the actual welding situation.

[0067] Furthermore, in the embodiments, it can be considered that two wire feeding mechanisms 2 are respectively installed on both sides of the main body 5 of the M2 welding machine, and connected to the control circuit module through independent control lines to realize individual control of wire feeding speed and start / stop.

[0068] In this embodiment, the two wire feeding mechanisms 2 are respectively installed on both sides of the main body 5 of the O2 welding machine or other suitable positions to ensure that the installation is firm and easy to operate and maintain. In accordance with the electrical connection requirements, the control lines of the two wire feeding mechanisms 2 are connected to the control circuit module of the main body 5 of the O2 welding machine to ensure reliable connection and no short circuits, open circuits or other issues.

[0069] Furthermore, in the embodiments, it can be considered that the two wire feeding mechanisms 2 are respectively connected to the main body 5 of the O2 welding machine via a six-core cable, a positive cable, a negative cable, and a mixed gas pipeline, wherein:

[0070] The positive cable, negative cable, and mixed gas pipeline are connected in parallel to the two wire feeding mechanisms 2;

[0071] The control circuit module is connected to the six-core cable, the welding gun switch control line of the welding gun mechanism 31, and the control cabinet signal cable of the control cabinet 1 through relays M1, M2, M3, M4 and their corresponding contact terminals to realize the start and stop control of the wire feeding mechanism 2 and the welding gun mechanism 31.

[0072] A six-core cable includes a main six-core cable, six-core cable A, and six-core cable B;

[0073] The main six-core cable is connected to the main body 5 of the MIG welding machine for operation. The six-core cable A is connected to the first wire feeding mechanism 2 for operation. The six-core cable B is connected to the second wire feeding mechanism 2 for operation.

[0074] Furthermore, in the embodiments, the connection method of the relays M1, M2, M3, and M4 can be considered as follows:

[0075] The main six-core cable is connected to relays M1 and M2. Wire 1 is connected to the 9th common contact terminal of relay M1, wire 2 is connected to the 12th common contact terminal of relay M1, wire 3 is connected to the 9th common contact terminal of relay M2, wire 4 is connected to the 10th common contact terminal of relay M2, wire 5 is connected to the 11th common contact terminal of relay M2, and wire 6 is connected to the 12th common contact terminal of relay M2.

[0076] The A1-A6 wires of the six-core cable A are connected to the normally closed contact terminals of M1 and M2 respectively;

[0077] The B1-B6 wires of the six-core cable B are connected to the normally open contact terminals of M1 and M2 respectively;

[0078] The control cabinet signal cables are connected in parallel to the coil terminals of M1 and M2, wires 9 and 10 are connected to the coil terminal of M3, and wires 11 and 12 are connected to the coil terminal of M4.

[0079] The A7 and A8 lines of the welding torch switch control line A are connected to the common contact and normally open contact terminal of M3, respectively.

[0080] The B7 and B8 lines of the welding torch switch control line B are connected to the common contact and normally open contact terminal of M4, respectively.

[0081] In this embodiment, the wire feeding mechanism 2 and the welding machine structure 31 are connected by a six-core cable, a positive cable, and a negative cable, respectively, and are externally connected to a mixed gas pipeline.

[0082] Circuit control principle:

[0083] like Figure 5 and Figure 6 As shown, the positive cable, negative cable, and mixed gas are connected in parallel to two wire feeding mechanisms 2. The six-core cable A controls the operation of the first wire feeding mechanism 2, and the six-core cable B controls the operation of the second wire feeding mechanism 2. The welding torch switch control line A controls the CO2 welding torch A to weld, and the welding torch switch control line B controls the CO2 welding torch B to weld.

[0084] Connect the main six-core cable to relays M1 and M2. Connect wire 1 to common contact terminal 9 of M1, wire 2 to common contact terminal 12 of M1, wire 3 to common contact terminal 9 of M2, wire 4 to common contact terminal 10 of M2, wire 5 to common contact terminal 11 of M2, and wire 6 to common contact terminal 12 of M2.

[0085] The A1 wire of the six-core cable A is connected to the normally closed contact terminal 1 of M1, the A2 wire is connected to the normally closed contact terminal 4 of M1, the A3 wire is connected to the normally closed contact terminal 1 of M2, the A4 wire is connected to the normally closed contact terminal 2 of M2, the A5 wire is connected to the normally closed contact terminal 3 of M2, and the A6 wire is connected to the normally closed contact terminal 4 of M2.

[0086] In the six-core cable B, wire B1 is connected to normally open contact terminal 5 of M1, wire B2 is connected to normally open contact terminal 8 of M1, wire B3 is connected to normally open contact terminal 5 of M2, wire B4 is connected to normally open contact terminal 6 of M2, wire B5 is connected to normally open contact terminal 7 of M2, and wire B6 is connected to normally open contact terminal 8 of M2.

[0087] Signal cable 7 of the control cabinet is connected in parallel to terminal 13 of coils M1 and M2, and signal cable 8 is connected in parallel to terminal 14 of coils M1 and M2; signal cable 9 is connected to terminal 13 of coil M3, signal cable 10 is connected to terminal 14 of coil M3; signal cable 11 is connected to terminal 13 of coil M4, and signal cable 12 is connected to terminal 14 of coil M4.

[0088] The A7 wire of welding torch switch control line A is connected to the 9th common contact terminal of M3, and the A8 wire is connected to the 5th normally open contact terminal of M3; the B7 wire of welding torch switch control line B is connected to the 9th common contact terminal of M4, and the B8 wire of welding torch switch control line B is connected to the 5th normally open contact terminal of M4.

[0089] When the robot moves to the welding position of CO2 welding gun A, the normally closed contacts of M1 and M2 are connected, the first wire feeding mechanism 2 works, and the robot outputs the welding signal of CO2 welding gun A to control the signal cable of the control cabinet, which energizes the coil of M3, the normally open contact of M3 is attracted, and the A7 and A8 lines of the welding gun switch control line A are connected, and CO2 welding gun A begins to weld.

[0090] After welding is completed, the robot outputs a welding signal from CO2 welding gun A to control the control cabinet signal cable lines 9 and 10, causing the M3 coil to lose power, the normally open contact of M3 to open, and the welding gun switch control line A to disconnect lines A7 and A8, thus stopping CO2 welding gun A from welding.

[0091] When the robot moves to the welding position of CO2 welding gun B, the robot outputs the working signal of the second wire feeding mechanism 2 to control the signal cable No. 7 and No. 8 of the control cabinet, so that the coils of M1 and M2 are energized, the normally open contacts of M1 and M2 are attracted, and the second wire feeding mechanism 2 is working.

[0092] The robot outputs a welding signal from the CO2 welding gun B to control the signal cables 11 and 12 of the control cabinet, energizing the M4 coil. This causes the normally open contact of M4 to close, connecting the B7 and B8 lines of the welding gun switch control line B, and the CO2 welding gun B begins welding.

[0093] After welding is completed, the M4 coil is de-energized by the signal cables 11 and 12 of the robot signal control cabinet. The normally open contact of M4 is opened, the B7 and B8 lines of the welding gun switch control line B are disconnected, and the CO2 welding gun B stops welding.

[0094] Furthermore, in the embodiments, the wire feeding mechanism may include an operation cabinet 207, the operation cabinet 207 being provided with a mounting frame 208, on which a wire feeding motor 201, a wire feeding wheel assembly 202, a wire pressing wheel assembly 203, a wire spool mounting frame 204, a wire feeding guide tube 205, and an operation panel 206 are mounted.

[0095] The wire feeding wheel assembly 202 includes a driving wheel and a driven wheel. The driving wheel is connected to the output shaft of the wire feeding motor 201 and rotates under the drive of the wire feeding motor 201, driving the welding wire forward. The wire pressing wheel assembly 203 cooperates with the wire feeding wheel assembly 202 to press the welding wire between the wire feeding wheel assembly 202. The wire feeding guide 205 guides the welding wire from the wire feeding wheel assembly 202 to the welding gun mechanism 31.

[0096] The wire spool mounting bracket 204 is used to install the wire spool for replacing the wire. The operation panel 206 controls the speed of the wire feeding motor 201 through the control circuit module.

[0097] In this embodiment, as Figure 2 As shown, the two wire feeding mechanisms 2 have the same structure and are independent of each other. Each includes a wire feeding motor 201, a wire feeding wheel set 202, a wire pressing wheel set 203, a wire spool mounting bracket 204, and a wire feeding guide tube 205.

[0098] The wire feeding motor 201 provides power for wire feeding, and its speed can be precisely adjusted through the control circuit module. The wire feeding wheel assembly 202 consists of a driving wire feeding wheel and a driven wire feeding wheel. The driving wire feeding wheel is connected to the output shaft of the wire feeding motor and rotates under the drive of the wire feeding motor 201, driving the welding wire forward through friction. The wire pressing wheel assembly 203 cooperates with the wire feeding wheel assembly to press the welding wire between the wire feeding wheels, ensuring the stability of wire feeding. The pressure of the wire pressing wheel assembly 203 can be adjusted according to the material and diameter of the welding wire. The welding wire spool mounting bracket 204 is used to install the welding wire spool for easy replacement of the welding wire. The wire feeding guide 205 guides the welding wire from the wire feeding mechanism to the welding gun. The inside of the wire feeding guide 205 is smooth to reduce the resistance of the welding wire during the conveying process.

[0099] The two wire feeding mechanisms are connected to the control circuit module of the main body of the O2 welding machine 5 via independent control lines. The control circuit module can independently control the wire feeding speed and start / stop of the first and second wire feeding mechanisms. Meanwhile, the main body of the O2 welding machine 5 is equipped with an operation panel (wire feeding mechanism), which integrates various control buttons and a parameter display screen. Operators can easily set parameters such as welding current, voltage, gas flow rate, and wire feeding speed of the two wire feeding mechanisms 2 through the operation panel. The parameter settings are transmitted to the control circuit module in real time, and the control circuit module controls the various actuators accordingly.

[0100] Furthermore, this can also be considered in the embodiments, such as... Figure 3 As shown, the welding torch mechanism 31 includes a support 320, on which a check valve 317 is installed;

[0101] A second bracket 319 is installed on the third bracket 320, and a rotary cylinder 318 is installed on the second bracket 319. The rotary cylinder 318 is connected to the air passage of the check valve 317.

[0102] The check valve 317 is connected to the nozzle 306 via the air pipe 305. The nozzle 306 is mounted on the welding torch 303. The welding torch 303 is mounted on the back plate 304 via clip one 301 and clip two 301. The back plate 304 is equipped with a splash guard 307.

[0103] Furthermore, this can also be considered in the embodiments, such as Figure 3 As shown, it also includes an automatic cleaning mechanism 32, which cooperates with the nozzle 306 of the welding torch mechanism 31;

[0104] The automatic cleaning mechanism 32 includes a bracket 307, which is connected to a slider via a guide rail. The slider is driven to move vertically by a guide rail motor.

[0105] Back plate 2 308 is mounted on the slider by screw 1 309, screw 2 310, screw 3 311 and screw 4 312;

[0106] A motor bracket 315 is mounted on the back plate 308, a motor 313 is mounted on the motor bracket 315, and a spring 314 is mounted on the output shaft of the motor 313.

[0107] Furthermore, this can also be considered in the embodiments, such as Figure 4 As shown, the grounding mechanism 4 includes a grounding wire 402 connected to the grounding end of the main body 5 of the M2 welding machine and a bracket 406 installed on the frame;

[0108] The bracket 406 is connected to the back plate 405, the back plate 405 forms a linear guide rail 404, and the back plate 407 is slidably connected to the linear guide rail 404.

[0109] The two ends of the second spring 401 are respectively connected to the mounting posts provided on the third back plate 405. The ground wire 402 is fixed to the side of the fourth back plate 407 by the third clip 403. One end of the top of the fourth back plate 407 extends upward to form a rib, and the rib is opposite to the end ring of the second spring 401.

[0110] Example 2:

[0111] A method for operating a load-bearing dual-wire feeding mechanism for a CO2 welding machine, using the aforementioned load-bearing dual-wire feeding mechanism device, includes the following steps:

[0112] Step 1: Press the start button on the main body 5 of the MIG welding machine to activate the welding power module, gas flow control module and two wire feeding mechanisms 2 of the control circuit module;

[0113] Step 2: Carbon dioxide shielding gas is ejected from nozzle 306 of welding torch mechanism 31 at a set flow rate to form a protective gas shield;

[0114] Step 3: One or two wire feeding mechanisms 2 feed the welding wire to the nozzle 306 of the welding gun mechanism 31 at a set speed. The welding power module provides electrical energy to generate an electric arc, which melts the welding wire and the workpiece to form a weld.

[0115] Step 4: After welding is completed, the welding torch mechanism 31 moves to the automatic cleaning mechanism 32. The automatic cleaning mechanism 32 moves to the welding nozzle 306 via a linear guide rail, and the cleaning spring 314 is driven by the motor 313 to rotate to remove welding slag.

[0116] In this embodiment, before welding, welding wire of appropriate material and diameter needs to be selected according to the requirements of the welding task and installed on the welding wire spool mounting frame 204 of the two wire feeding mechanisms 2 respectively. The welding wire is then passed through the wire feeding wheel group 202, the wire pressing wheel group 203 and the wire feeding guide 205 in sequence until it reaches the welding gun.

[0117] Using the operation panel on the wire feeding mechanism of the main body 5 of the MIG welding machine, basic welding parameters such as welding current, voltage, and gas flow rate are set. At the same time, the wire feeding speed of the two wire feeding mechanisms 2 is set according to the welding process requirements.

[0118] For example, when performing butt welding of ordinary carbon steel, the welding current can be set to 150-200A, the voltage to 20-25V, and the gas flow rate to 15-20L / min. If twin-wire welding is used to improve efficiency, the wire feeding speed of the first wire feeding mechanism 2 can be set to 3-4m / min, and the wire feeding speed of the second wire feeding mechanism 2 can be set to 3-4m / min.

[0119] Welding process:

[0120] Press the start button on the main body 5 of the CO2 welding machine, and the control circuit module starts the welding power module, the gas flow control module, and the two wire feeding mechanisms 2. The carbon dioxide shielding gas is sprayed from the welding torch at the set flow rate, forming a protective gas shield in the welding area; the two wire feeding mechanisms 2 deliver the welding wire to the welding torch at the set wire feeding speed. Under the action of the electrical energy provided by the welding power module, an electric arc is generated between the welding wire and the workpiece, melting the welding wire and the surface of the workpiece to form a weld. After welding is completed, the welding torch rotates to the automatic cleaning mechanism 32. The automatic cleaning mechanism 32 moves to the welding torch nozzle 306 through the linear guide rail (with a power source). The automatic cleaning mechanism 32 drives the spring 1 (314) used for cleaning to rotate through the motor 313, completing the cleaning of the welding slag in the nozzle 306, realizing the function of cleaning the welding slag in the welding torch nozzle 306 after welding.

[0121] During the welding process, operators can monitor welding parameters in real time through the control panel on the wire feeding mechanism and make adjustments according to the actual welding situation. For example, if undercut is found in the weld, the welding current can be reduced or the voltage increased appropriately; if the wire feeding is unstable, the pressure of the wire pressure roller of the wire feeding mechanism can be checked and adjusted accordingly.

[0122] Furthermore, in the embodiment, when the robot moves to the CO2 welding gun A welding position of the first welding gun mechanism 31, the normally closed contacts of relays M1 and M2 are in the connected state, a wire feeding mechanism 2 works, and the control cabinet signal cable 9 and 10 triggers the coil of relay M3 to be energized, so that the welding gun switch control line A is connected and the CO2 welding gun A welding is started.

[0123] When the robot moves to the CO2 welding gun B welding position of the second welding gun mechanism 31, the control cabinet signal cables 7 and 8 trigger the coils of relays M1 and M2 to be energized, causing the other wire feeding mechanism 2 to work. At the same time, the signal cables 11 and 12 trigger the coil of relay M4 to be energized, starting the CO2 welding gun B welding.

[0124] The above embodiments have provided a detailed description of the present invention, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A load-bearing double wire feeding mechanism device for a CO2 welding machine, characterized in that: It includes a control cabinet (1), a carbon dioxide welding machine body (5) set in a frame, two wire feeding mechanisms (2) and a grounding mechanism (4) set at the grounding end of the carbon dioxide welding machine body (5); The gas path of the main body (5) of the O2 welding machine is connected to two welding gun mechanisms (31). The main body (7) of the O2 welding machine is equipped with a welding power module and a gas flow control module for controlling the welding gun mechanism (31). The welding power module is used to provide welding power, and the gas flow control module is used to control the flow of carbon dioxide shielding gas. The control cabinet (1) is equipped with a control circuit module. The control circuit module is electrically connected to the wire feeding mechanism (2), the welding power supply module and the gas flow control, and performs coordinated control of each part according to the preset welding parameters and the actual welding situation.

2. The load-bearing double wire feeding mechanism device for a CO2 welding machine according to claim 1, characterized in that: Two wire feeding mechanisms (2) are installed on both sides of the main body (5) of the M2 welding machine, and are connected to the control circuit module through independent control lines to realize independent control of wire feeding speed and start / stop.

3. The dual-wire feeding mechanism device for a CO2 welding machine according to claim 2, characterized in that: The two wire feeding mechanisms (2) are respectively connected to the main body (5) of the O2 welding machine via a six-core cable, a positive cable, a negative cable, and a mixed gas pipeline, wherein: The positive cable, negative cable, and mixed gas pipeline are connected in parallel to the two wire feeding mechanisms (2); The control circuit module connects to the six-core cable, the welding gun switch control line of the welding gun mechanism (31), and the control cabinet signal cable of the control cabinet (1) through relays (M1, M2, M3, M4) and corresponding contact terminals to realize the start and stop control of the wire feeding mechanism (2) and the welding gun mechanism (31). A six-core cable includes a main six-core cable, a six-core cable (A), and a six-core cable (B); The main six-core cable is connected to the main body (5) of the oxygen welding machine for operation, the six-core cable (A) is connected to the first wire feeding mechanism (2) for operation, and the six-core cable (B) is connected to the second wire feeding mechanism (2) for operation.

4. The dual-wire feeding mechanism device for a CO2 welding machine according to claim 3, characterized in that: The connection method of the relays (M1, M2, M3, M4) is as follows: The main six-core cable is connected to relays M1 and M2. Wire 1 is connected to the 9th common contact terminal of relay M1, wire 2 is connected to the 12th common contact terminal of relay M1, wire 3 is connected to the 9th common contact terminal of relay M2, wire 4 is connected to the 10th common contact terminal of relay M2, wire 5 is connected to the 11th common contact terminal of relay M2, and wire 6 is connected to the 12th common contact terminal of relay M2. The A1-A6 wires of the six-core cable (A) are connected to the normally closed contact terminals of M1 and M2 respectively; The B1-B6 wires of the six-core cable (B) are connected to the normally open contact terminals of M1 and M2 respectively; The control cabinet signal cables are connected in parallel to the coil terminals of M1 and M2, wires 9 and 10 are connected to the coil terminal of M3, and wires 11 and 12 are connected to the coil terminal of M4. The A7 and A8 lines of the welding torch switch control line (A) are connected to the common contact and normally open contact terminal of M3, respectively; The B7 and B8 lines of the welding torch switch control line (B) are connected to the common contact and normally open contact terminal of M4, respectively.

5. The load-bearing double wire feeding mechanism device for a CO2 welding machine according to claim 1, characterized in that: The wire feeding mechanism includes an operation cabinet (207), the operation cabinet (207) is provided with a mounting frame (208), and the mounting frame (208) is equipped with a wire feeding motor (201), a wire feeding wheel assembly (202), a wire pressing wheel assembly (203), a wire spool mounting frame (204), a wire feeding guide tube (205), and an operation panel (206). The wire feeding wheel assembly (202) includes a driving wheel and a driven wheel. The driving wheel is connected to the output shaft of the wire feeding motor (201) and rotates under the drive of the wire feeding motor (201) to drive the welding wire forward. The wire pressing wheel assembly (203) cooperates with the wire feeding wheel assembly (202) to press the welding wire between the wire feeding wheel assemblies (202). The wire feeding guide (205) guides the welding wire from the wire feeding wheel assembly (202) to the welding gun mechanism (31). The wire spool mounting bracket (204) is used to install the wire spool for replacing the wire. The operation panel (206) controls the speed of the wire feeding motor (201) through the control circuit module.

6. The load-bearing double wire feeding mechanism device for a CO2 welding machine according to claim 1, characterized in that: The welding torch mechanism (31) includes a support three (320), on which a check valve (317) is installed; A second bracket (319) is installed on the third bracket (320), and a rotary cylinder (318) is installed on the second bracket (319). The rotary cylinder (318) is connected to the air circuit of the check valve (317). The check valve (317) is connected to the nozzle (306) via the air pipe (305). The nozzle (306) is mounted on the welding torch (303). The welding torch (303) is mounted on the back plate (304) via clip one (301) and clip two (301). The back plate (304) is equipped with a splash guard (307).

7. The load-bearing double wire feeding mechanism device for a CO2 welding machine according to claim 1, characterized in that: It also includes an automatic cleaning mechanism (32), which cooperates with the nozzle (306) of the welding torch mechanism (31); The automatic cleaning mechanism (32) includes a bracket (307), which is connected to a slider via a guide rail. The slider is driven to move vertically by a guide rail motor. Back plate 2 (308) is mounted on the slider by screw 1 (309), screw 2 (310), screw 3 (311) and screw 4 (312); A motor bracket (315) is installed on the back plate 2 (308), a motor (313) is installed on the motor bracket (315), and a spring 1 (314) is installed on the output shaft of the motor (313).

8. The load-bearing double wire feeding mechanism device for a CO2 welding machine according to claim 1, characterized in that: The grounding mechanism (4) includes a grounding wire (402) connected to the grounding terminal of the main body (5) of the M2 welding machine and a bracket (406) installed on the frame; The bracket four (406) is connected to the back plate three (405), the back plate three (405) forms a linear guide rail (404), and the back plate four (407) is slidably connected to the linear guide rail (404); The two ends of the second spring (401) are respectively connected to the mounting posts provided on the third back plate (405). The ground wire (402) is fixed to the side of the fourth back plate (407) by the third clip (403). One end of the top of the fourth back plate (407) extends upward to form a rib, and the rib is opposite to the end ring of the second spring (401).

9. A method for operating a dual-wire feeding mechanism under load in a CO2 welding machine, using the dual-wire feeding mechanism device under load in a CO2 welding machine as described in any one of claims 1-8, characterized in that... Includes the following steps: Step 1: Start the main body (5) of the MIG welding machine by pressing the start button. The control circuit module activates the welding power module, the gas flow control module and the two wire feeding mechanisms (2). Step 2: Carbon dioxide shielding gas is ejected from the nozzle (306) of the welding torch mechanism (31) at a set flow rate to form a protective gas shield; Step 3: One or two wire feeding mechanisms (2) feed the welding wire to the nozzle (306) of the welding gun mechanism (31) at a set speed. The welding power module provides electrical energy to generate an electric arc, which melts the welding wire and the workpiece to form a weld. Step 4: After welding is completed, the welding torch mechanism (31) moves to the automatic cleaning mechanism (32). The automatic cleaning mechanism (32) moves to the welding nozzle (306) position via a linear guide rail. The motor (313) drives the spring (314) used for cleaning to rotate to remove welding slag.

10. The method for operating a load-bearing double wire feeding mechanism of a CO2 welding machine according to claim 9, characterized in that: When the robot moves to the CO2 welding gun (A) welding position of the first welding gun mechanism (31), the normally closed contacts of relay (M1) and relay M2 are connected, a wire feeding mechanism (2) works, and the control cabinet signal cable No. 9 and No. 10 trigger the coil of relay (M3) to be energized, so that the welding gun switch control line (A) is connected and the CO2 welding gun (A) is started to weld. When the robot moves to the CO2 welding gun (B) welding position of the second welding gun mechanism (31), the coils of the relays (M1, M2) triggered by the signal cables 7 and 8 of the control cabinet are energized, which makes the other wire feeding mechanism (2) work. At the same time, the coils of the relays (M4) triggered by the signal cables 11 and 12 are energized, which starts the CO2 welding gun (B) welding.

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