A wire feeding assembly with a narrow pitch welding torch

Abstract

The application discloses a narrow-distance welding gun with a wire feeding assembly following rotation, which comprises a driving mechanism, a transmission mechanism, a welding mechanism and a wire feeding mechanism, wherein motor gears on motor output shafts of DC motors in the driving mechanism are respectively engaged with main transmission wheels in the transmission mechanism and wire feeding swing gears in the wire feeding mechanism; the application realizes wire feeding assembly following rotation of the welding mechanism by respectively driving transmission gear sets and wire feeding swing gears to rotate by the motor gears, so that a wire guide long tube can fully utilize the length and angle change of the wire feeding assembly itself to meet the length requirement of the wire guide long tube in the rotation process of the welding mechanism, the requirement of the wire guide long tube to the length of itself is reduced, so that the winding phenomenon of the excessively long wire guide long tube in the working process is prevented, the welding assembly and the wire feeding assembly are separated, the size of the welding assembly itself is further reduced, and the welding work in narrow and small spaces can be more suitable.

Description

Technical Field

[0001] This invention relates to the field of narrow-pitch welding torch structures, and particularly to a narrow-pitch welding torch in which the wire feeding assembly rotates. Background Technology

[0002] High-pressure heaters in the regenerative systems of modern large-scale thermal power generating units typically have two structural types: U-tube and serpentine tube. If a tube-sheet type U-tube high-pressure heater is used, a large tube sheet diameter and thickness are usually required, but the start-up and shutdown of the unit can cause significant thermal stress, leading to thermal cracks at the connection between the shell and the tube sheet. Currently, domestic megawatt-class supercritical units are gradually transitioning from traditional U-tube high-pressure heaters to serpentine tube high-pressure heaters. However, the structure of serpentine tube high-pressure heaters differs significantly from that of U-tube high-pressure heaters, and their manufacturing processes also differ considerably. In current serpentine tube high-pressure heaters, the welding of the serpentine heat exchange tubes to the manifold seat requires a specialized U-tube welding machine due to the limited space.

[0003] In existing U-tube welding machines, the welding mechanism is often designed to be relatively small, allowing it to fit into narrow spaces. Therefore, integrating the wire feeding mechanism with the welding mechanism is not conducive to fitting into narrow spaces. In contrast, separating the wire feeding mechanism from the welding mechanism requires a separate wire guide tube to be led out to the welding mechanism. As the welding mechanism rotates, the wire guide tube rotates along with it. To prevent the wire guide tube from getting stuck due to insufficient length during rotation, a longer wire guide tube is often used. However, a longer wire guide tube is very prone to getting tangled on the welding mechanism during welding, or tangling when the welding mechanism rotates, preventing the wire guide tube from returning to its original position. Once the wire guide tube gets tangled, the operator must stop welding, which seriously affects welding efficiency. To address this problem, this application proposes a solution. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide a narrow-pitch welding torch with a wire feeding assembly that rotates in tandem with the welding mechanism, enabling narrow-pitch welding while simultaneously allowing the wire feeding mechanism to rotate in tandem with the welding mechanism, thus preventing wire entanglement.

[0005] Technical solution: The present invention provides a narrow-pitch welding torch with a wire feeding assembly and rotation, comprising a driving mechanism, a transmission mechanism, a welding mechanism and a wire feeding mechanism, wherein the motor gear on the output shaft of the DC motor in the driving mechanism meshes with the main transmission wheel in the transmission mechanism and the wire feeding swing gear in the wire feeding mechanism respectively.

[0006] The transmission mechanism includes a transmission cavity composed of a base plate and a cover plate, and a transmission wheel assembly disposed inside the transmission cavity. The transmission cavity is disposed on the end face of the output end of the drive mechanism. The transmission wheel assembly includes a main transmission wheel and a secondary transmission wheel. The main transmission wheel meshes with the motor gear and also meshes with the secondary transmission wheel. The secondary transmission wheel meshes with the welding gear in the welding mechanism.

[0007] The welding mechanism includes a welding gear, a welding component mounting plate, a welding component, and a wire guide assembly. The welding gear is disposed in the transmission cavity and has a U-shaped groove for extending into the point to be welded. The welding component mounting plate is disposed on the end face of the welding gear. The welding component mounting plate is disposed on the welding component mounting plate and the wire guide assembly. The short wire guide tube in the wire guide assembly contains welding wire fed from the long wire guide tube in the wire feeding mechanism.

[0008] The wire feeding mechanism includes a wire feeding motor, a wire feeding bracket, a substrate pad, a wire feeding swing gear, a synchronous pulley set, and a wire feeding assembly. The wire feeding bracket is connected to one side of the transmission cavity. A synchronous pulley set is provided on the wire feeding bracket. One synchronous pulley in the synchronous pulley set is mounted on the wire feeding swing gear shaft connected to the wire feeding swing gear. The first synchronous pulley is connected to a second synchronous pulley via a belt. A rotating bushing is provided on the end face of the second synchronous pulley. A substrate pad is connected to the end face of the rotating bushing. A wire feeding assembly is provided on the end face of the substrate pad. The output end of the wire feeding motor passes through the center of the second synchronous pulley and extends into the wire feeding assembly. It is connected to the wire feeding wheel in the wire feeding assembly through a transmission structure. The wire feeding assembly is located on the end face of the substrate pad and rotates with the substrate pad. The wire outlet joint in the wire feeding assembly faces the welding assembly. The wire outlet joint is connected to the short wire guide tube through a long wire guide tube.

[0009] Preferably, the drive mechanism includes a motor housing, a DC motor, an operation box, and a button panel. The motor housing encapsulates the DC motor inside, the operation box is disposed on the motor housing, and a controller electrically connected to the DC motor is disposed inside the operation box. The buttons on the button panel are electrically connected to the controller to control the operation of the device.

[0010] Preferably, the transmission wheel set adopts a one-main-four-auxiliary wheel set structure, with the main transmission wheel meshing with two auxiliary transmission wheels, each of the two auxiliary transmission wheels meshing with one auxiliary transmission wheel, and the final auxiliary transmission wheel meshing with the welded gear.

[0011] Preferably, the welding assembly includes a welding torch head, a tungsten needle, and a ceramic nozzle. The welding torch head is mounted on the welding assembly mounting plate, and the welding torch head is provided with a ceramic nozzle. A tungsten needle is disposed inside the ceramic nozzle, and the tungsten needle faces the point to be welded.

[0012] Preferably, the wire guide assembly includes a wire guide base plate, a wire guide cover plate, a wire guide support, a wire guide bracket, and a wire guide tube. The wire guide base plate is disposed on the welding assembly mounting plate. The wire guide cover plate is connected to the wire guide base plate through the wire guide support. The wire guide tube is disposed between the wire guide cover plate and the wire guide base plate through the wire guide support, and the wire outlet of the wire guide tube faces the welding point.

[0013] Preferably, a heat-resistant pad is provided between the welding gear and the welding assembly mounting plate to prevent the high temperature generated during the welding process from damaging the transmission cavity.

[0014] Preferably, the transmission structure includes a first transmission wheel, a second transmission wheel, and a first transmission shaft. The first transmission wheel is fixedly connected to the output end of the wire feeding motor and meshes with the second transmission wheel. The second transmission wheel is fixedly connected to the first transmission shaft, and the first transmission shaft is fixedly connected to the wire feeding wheel. Thus, when the wire feeding motor is working, it drives the first transmission wheel to rotate, thereby sequentially driving the second transmission wheel and the first transmission shaft to rotate, and finally driving the wire feeding wheel to rotate, thus completing the wire feeding.

[0015] Preferably, the wire feeding assembly includes a wire feeding base plate, a wire feeding cover plate, a wire feeding wheel, a wire inlet connector, a wire outlet connector, a bearing, and a clamping assembly. The wire feeding base plate is fixed on a base plate gasket, and the wire feeding wheel, which rotates with the operation of the wire feeding motor, is provided on the wire feeding base plate. The clamping assembly is provided on the wire feeding base plate and is connected to the bearing so that the surface of the outer ring of the bearing contacts the surface of the outer ring of the wire feeding wheel. The surface of the outer ring of the wire feeding wheel is provided with a groove for the welding wire to pass through. The wire inlet connector and the wire outlet connector are respectively provided on both sides of the connection between the bearing and the wire feeding wheel.

[0016] Preferably, the clamping assembly includes a pressure roller pin, a pressure rod, a clamping screw, a clamping nut, and a clamping washer. The clamping screw is fixed on the wire feeding plate. One end of the pressure rod is fixed on the wire feeding plate, and the other end is connected to the clamping screw via the clamping nut. The clamping washer is disposed between the clamping nut and the pressure rod. One end of the pressure roller pin is connected to a bearing, and the other end is connected to the pressure rod. By tightening the clamping nut, the pressure rod is driven to retract toward the clamping screw, which in turn drives the bearing to tighten toward the wire feeding roller.

[0017] Preferably, the wire feeding assembly is provided with a wire guide wheel, which is connected to the welding wire in the wire spool assembly. The welding wire enters the wire feed joint of the wire feeding assembly through the wire guide wheel.

[0018] Preferably, the wire feeding bracket is provided with a tension adjustment plate, which is rotatably connected to the wire feeding bracket. The end face of the tension adjustment plate is connected to the outer side of the belt to tension the belt.

[0019] By adopting the above technical solution, the motor gears of the DC motor drive the transmission gear set and the wire feeding swing gear to rotate respectively. Thus, during the rotational welding process of the welding mechanism connected to the transmission gear set, the wire feeding swing gear also rotates. The rotation of the wire feeding swing gear drives the rotation of the synchronous pulley set, which in turn drives the rotation of the wire feeding assembly fixedly connected to the synchronous pulley set. Since the rotation of the welding mechanism will drive the guide wire tube between the welding mechanism and the wire feeding assembly to rotate together, the rotation of the wire feeding assembly allows the guide wire tube to make up for the lack of length during the rotation process by utilizing the length and angle changes of the wire feeding assembly itself. This prevents the entire welding mechanism from getting stuck due to insufficient length of the guide wire tube during the rotational welding process, and ultimately significantly reduces the required length of the guide wire tube. Furthermore, the reduced length of the guide wire tube can further prevent the wire tube from getting tangled during the rotation of the welding mechanism.

[0020] Beneficial effects:

[0021] (1) After separating the welding assembly and the wire feeding assembly, this application further reduces the size of the welding assembly itself, making it more suitable for welding work in narrow spaces. It can be inserted normally into narrow spaces with a pipe spacing of 20cm and welded.

[0022] (2) This application uses the motor gear to drive the transmission gear set and the wire feeding swing gear to rotate, so that the wire feeding assembly can follow the welding mechanism to rotate. This allows the wire guide tube to make full use of the length and angle change of the wire feeding assembly during rotation to meet the welding mechanism's requirements for the length of the wire guide tube during rotation, reducing the requirements of the wire guide tube for its own length and thus preventing the excessively long wire guide tube from tangling during operation. Attached Figure Description

[0023] Figure 1 This is a frontal perspective view of this application;

[0024] Figure 2 This is a rear-view perspective view of this application;

[0025] Figure 3 This is a front view of this application;

[0026] Figure 4 This is a front view of the application after removing the front encapsulation.

[0027] Figure 5 This is a three-dimensional structural diagram of the transmission mechanism, synchronous belt pulley assembly, and welding mechanism in this application;

[0028] Figure 6 This is a three-dimensional structural diagram of the welding mechanism in this application;

[0029] Figure 7This is a three-dimensional structural diagram of the welding assembly in this application;

[0030] Figure 8 This is a frontal perspective view of the wire feeding mechanism in this application;

[0031] Figure 9 This is a three-dimensional side view of the wire feeding mechanism in this application;

[0032] Figure 10 This is a three-dimensional structural diagram of the wire feeding assembly in this application;

[0033] Figure 11 This is a three-dimensional structural diagram of the transmission structure in this application.

[0034] The components include: 1. Drive mechanism; 101. Motor housing; 102. Operation box; 103. Button panel; 105. Motor output shaft; 106. Motor gear; 2. Transmission mechanism; 201. Base plate; 202. Cover plate; 203. Main drive wheel; 204. Secondary drive wheel; 3. Welding mechanism; 301. Welding gear; 302. Welding component mounting plate; 303. Welding component; 304. Wire guide assembly; 3031. Welding torch head; 3032. Tungsten needle; 3033. Ceramic nozzle; 3041. Wire guide base plate; 3042. Wire guide cover plate; 3043. Wire guide support; 3044. Wire guide bracket; 3045. Wire guide short tube; 4. Wire feeding mechanism; 401. Wire feeding motor; 402. Wire feeder bracket; 403. Base plate gasket; 404. Wire feeder... 405. Wire feeding swivel gear; 406. Synchronous belt pulley set; 407. Wire feeding assembly; 408. Wire feeding swivel gear shaft; 409. Rotating bushing; 4000. Transmission structure; 4051. Synchronous belt pulley one; 4052. Synchronous belt pulley two; 4061. Wire feeding base plate; 4062. Wire feeding cover plate; 4063. Wire feeding wheel; 4064. Wire inlet connector; 4065. Wire outlet connector; 4067. Bearing; 4068. Pressing assembly; 4069. Channel; 4091. Transmission wheel one; 4092. Transmission wheel two; 4093. Transmission shaft one; 40681. Pressure roller pin; 40682. Wire pressing rod; 40683. Pressing screw; 40684. Pressing nut; 40685. Pressing washer; 5. Tension adjusting plate; 6. Wire spool assembly; 7. Guide wheel. Detailed Implementation

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a number" means two or more, unless otherwise explicitly specified.

[0039] like Figure 1 The diagram shown is a structural schematic of this application. In this embodiment, it includes a drive mechanism 1, a transmission mechanism 2, a welding mechanism 3, and a wire feeding mechanism 4. The drive mechanism 1 includes a motor housing 101, a DC motor, an operation box 102, and a button panel 103. The motor housing 101 encapsulates the DC motor inside. The operation box 102 is disposed on the motor housing 101. The operation box 102 contains a controller electrically connected to the DC motor. The buttons on the button panel 103 are electrically connected to the controller to control the operation of the device. The motor gear 106 on the motor output shaft 105 of the DC motor 102 meshes with the main transmission wheel 203 in the transmission mechanism 2 and the wire feeding swing gear 401 in the wire feeding mechanism 4.

[0040] In this embodiment, the transmission mechanism 2 includes a transmission cavity composed of a base plate 201 and a cover plate 202, and a transmission wheel set disposed inside the transmission cavity. The transmission cavity is disposed on the end face of the output end of the drive mechanism 1. The transmission wheel set adopts a one main and four auxiliary wheel set structure. While the main transmission wheel 203 meshes with the motor gear 106, it also meshes with two auxiliary transmission wheels 204. Each of the two auxiliary transmission wheels 204 meshes with one auxiliary transmission wheel 204. Finally, the auxiliary transmission wheels 204 mesh with the welding gear 301.

[0041] In this embodiment, the welding mechanism 3 includes a welding gear 301, a welding component mounting plate 302, a welding component 303, and a wire guide assembly 304. The welding gear 301 is disposed in the transmission cavity and has a U-shaped groove 3011 for extending into the point to be welded. The welding component mounting plate 302 is disposed on the end face of the welding gear 301. The welding component mounting plate 302 is disposed on the welding component mounting plate 302 and the wire guide assembly 304. The wire guide short tube 3045 in the wire guide assembly 304 contains welding wire fed from the wire guide long tube in the wire feeding mechanism 4.

[0042] In this embodiment, the welding assembly 303 includes a welding torch head 3031, a tungsten needle 3032, and a ceramic nozzle 3033. The welding torch head 3031 is disposed on the welding assembly mounting plate 302. The ceramic nozzle 3033 is disposed on the welding torch head 3031. The tungsten needle 3032 is disposed inside the ceramic nozzle 3033 and faces the point to be welded.

[0043] In this embodiment, the wire guide assembly 304 includes a wire guide substrate 3041, a wire guide cover plate 3042, a wire guide support 3043, a wire guide bracket 3044, and a wire guide tube 3045. The wire guide substrate 3041 is disposed on the welding assembly mounting plate 302. The wire guide cover plate 3042 is connected to the wire guide substrate 3041 through the wire guide support 3043. The wire guide tube 3045 is disposed between the wire guide cover plate 3041 and the wire guide substrate 3042 through the wire guide support 3043. The wire outlet of the wire guide tube 3045 faces the point to be welded.

[0044] In this embodiment, a heat-resistant pad is provided between the welding gear 301 and the welding assembly mounting plate 302 to prevent the high temperature generated during the welding process from damaging the transmission cavity.

[0045] In this embodiment, the wire feeding mechanism 4 includes a wire feeding motor 401, a wire feeding bracket 402, a base plate gasket 403, a wire feeding swing gear 404, a synchronous pulley set 405, and a wire feeding assembly 406. The wire feeding bracket 402 is connected to one side of the transmission cavity. The synchronous pulley set 405 is provided on the wire feeding bracket 402. The first synchronous pulley 4051 in the synchronous pulley set 405 is provided on the wire feeding swing gear shaft 407 connected to the wire feeding swing gear 404. The first synchronous pulley 4051 is connected to the second synchronous pulley 4052 via a belt. A rotating bushing 4 is provided on the end face of the second synchronous pulley 4052. 08. A base plate 403 is connected to the end face of the rotating bushing 408. A wire feeding assembly 406 is provided on the end face of the base plate 403. The output end of the wire feeding motor 401 passes through the center of the synchronous pulley 4052 and extends into the wire feeding assembly 406. It is connected to the wire feeding wheel 4063 in the wire feeding assembly 406 through the transmission structure 409. The wire feeding assembly 406 is provided on the end face of the base plate 403 and rotates with the base plate 403. The wire outlet joint 4065 in the wire feeding assembly 406 faces the welding assembly 303. The wire outlet joint 4065 is connected to the wire guide tube 3045 through the wire guide tube.

[0046] In this embodiment, the transmission structure 409 includes a first transmission wheel 4091, a second transmission wheel 4092, and a first transmission shaft 4093. The first transmission wheel 4091 is fixedly connected to the output end of the wire feeding motor 401 and meshes with the second transmission wheel 4092. The second transmission wheel 4092 is fixedly connected to the first transmission shaft 4093. The first transmission shaft 4093 is fixedly connected to the wire feeding wheel 4063. Thus, when the wire feeding motor 401 is working, it drives the first transmission wheel 4091 to rotate, thereby sequentially driving the second transmission wheel 4092 and the first transmission shaft 4093 to rotate, and finally driving the wire feeding wheel 4063 to rotate, thus completing the wire feeding.

[0047] In this embodiment, the wire feeding assembly 406 includes a wire feeding base plate 4061, a wire feeding cover plate 4062, a wire feeding wheel 4063, a wire inlet connector 4064, a wire outlet connector 4065, a bearing 4067, and a clamping assembly 4068. The wire feeding base plate 4061 is fixed on a base plate gasket 403. The wire feeding base plate 4061 is provided with a wire feeding wheel 4063 that rotates with the operation of the wire feeding motor 401. The clamping assembly 4068 is provided on the wire feeding base plate 4061. The clamping assembly 4068 is connected to the bearing 4067 so that the surface of the outer ring of the bearing 4067 contacts the surface of the outer ring of the wire feeding wheel 4063. The surface of the outer ring of the wire feeding wheel 4063 is provided with a channel 4069 for the wire to pass through. The wire inlet connector 4064 and the wire outlet connector 4065 are respectively provided on both sides of the connection between the bearing 4067 and the wire feeding wheel 4063.

[0048] In this embodiment, the clamping assembly 4068 includes a pressure roller pin 40681, a pressure rod 40682, a clamping screw 40683, a clamping nut 40684, and a clamping washer 40685. The clamping screw 40683 is fixed on the wire feeding base plate 4061. One end of the pressure rod 40682 is fixed on the wire feeding base plate 4061, and the other end is connected to the pressure rod 40683 through the clamping nut 40684. The clamping washer 40685 is disposed between the clamping nut 40684 and the pressure rod 40682. One end of the pressure roller pin 40681 is connected to the bearing 4067, and the other end is connected to the pressure rod 40682. By tightening the clamping nut 40684, the pressure rod 40682 is driven to retract toward the clamping screw 40683, thereby driving the bearing 4067 to tighten toward the wire feeding roller 4063.

[0049] In this embodiment, the wire feeding assembly 406 is provided with a wire guide wheel 7, which is connected to the welding wire in the wire spool assembly 6. The welding wire enters the wire feed joint 4064 of the wire feeding assembly 406 through the wire guide wheel 7.

[0050] In this embodiment, a tension adjustment piece 5 is additionally provided on the wire feeding bracket 402. The tension adjustment piece 5 is rotatably connected to the wire feeding bracket 402. The end face of the tension adjustment piece 5 is connected to the outer side of the belt. The belt is tensioned by rotating the tension adjustment piece 5.

[0051] In this embodiment, during operation, the motor gear 106 of the DC motor drives the wire feeding swing gear 404 and the main drive wheel 203 in the transmission gear set to rotate. At this time, the main drive wheel 203 drives the auxiliary drive wheel 204 to rotate through the one main and four auxiliary structure design. Finally, the auxiliary drive wheel 204 drives the welding gear 301 to rotate. The rotation of the welding gear 301 drives the welding assembly mounting plate 302 to rotate, thereby driving the welding assembly 303 and the wire guide assembly 304 mounted on the welding assembly mounting plate 302 to rotate. At the same time, the rotation of the wire feeding swing gear 404 drives the synchronous pulley set 405 to rotate. The synchronous pulley 4052 in the synchronous pulley set 405 drives the rotating bushing 408 to rotate, thereby driving the substrate pad 403 set on the end face of the rotating bushing 408 to rotate, and finally driving the wire feeding assembly 406 set on the end face of the substrate pad 403 to rotate.

[0052] When the welding mechanism 3 and the wire feeding assembly 406 rotate synchronously, the wire feeding motor 401 also starts to work. The output end of the wire feeding motor 401 passes through the center of the synchronous pulley 4052 and extends into the wire feeding assembly 406. It is connected to the wire feeding wheel 4063 in the wire feeding assembly 406 through the transmission structure 409, which drives the wire feeding wheel 4063 to rotate. The rotation of the wire feeding wheel 4063 drives the wire from the wire spool assembly 6 to the wire guide wheel 7. The welding wire that enters the wire inlet joint 4064 from the wire guide wheel 7 is output from the wire outlet joint 4065 and enters the long wire guide tube. It then enters the short wire guide tube 3045 in the wire guide assembly 304 until it is delivered to the welding point and works with the welding gun head 3031 to perform welding.

[0053] As the welding mechanism 3 rotates, it will drive the wire guide tube between the welding mechanism 3 and the wire feeding assembly 406 to rotate together. At this time, the rotation of the wire feeding assembly 406 can make the wire guide tube compensate for the lack of length during the rotation by utilizing the length and angle changes of the wire feeding assembly 406 itself. This prevents the entire welding mechanism 3 from getting stuck due to insufficient length of the wire guide tube during the rotation welding process, and ultimately greatly reduces the length requirement of the wire guide tube. The reduced length of the wire guide tube can further prevent the wire guide tube from getting tangled during the rotation of the welding mechanism 3.

[0054] When the welding work is completed, the wire feeding motor 401 stops working and stops feeding wire. The welding mechanism 3 rotates, and at the same time, the wire feeding assembly 406 rotates synchronously. The wire guide tube returns to its original position following the rotation of the welding mechanism 3, and the entire welding work is completed.

[0055] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A narrow gap welding torch with wire feeder assembly follow-up, comprising a driving mechanism, a transmission mechanism, a welding mechanism and a wire feeding mechanism, characterized in that: The motor gear on the output shaft of the DC motor in the drive mechanism meshes with the main drive wheel in the transmission mechanism and the wire feeding swing gear in the wire feeding mechanism, respectively. The transmission mechanism includes a transmission cavity composed of a base plate and a cover plate, and a transmission wheel assembly disposed inside the transmission cavity. The transmission cavity is disposed on the end face of the output end of the drive mechanism. The transmission wheel assembly includes a main transmission wheel and a secondary transmission wheel. The main transmission wheel meshes with the motor gear and also meshes with the secondary transmission wheel. The secondary transmission wheel meshes with the welding gear in the welding mechanism. The welding mechanism includes a welding gear, a welding component mounting plate, a welding component, and a wire guide assembly. The welding gear is disposed in the transmission cavity and has a U-shaped groove for extending into the point to be welded. The welding component mounting plate is disposed on the end face of the welding gear. The welding component mounting plate is disposed on the welding component mounting plate and the wire guide assembly. The short wire guide tube in the wire guide assembly contains welding wire fed from the long wire guide tube in the wire feeding mechanism. The wire feeding mechanism includes a wire feeding motor, a wire feeding bracket, a substrate pad, a wire feeding swing gear, a synchronous pulley set, and a wire feeding assembly. The wire feeding bracket is connected to one side of the transmission cavity. A synchronous pulley set is provided on the wire feeding bracket. One synchronous pulley in the synchronous pulley set is located on the wire feeding swing gear shaft connected to the wire feeding swing gear. The first synchronous pulley is connected to a second synchronous pulley via a belt. A rotating bushing is provided on the end face of the second synchronous pulley. A substrate pad is connected to the end face of the rotating bushing. A wire feeding assembly is provided on the end face of the substrate pad. The output end of the wire feeding motor passes through the center of the second synchronous pulley and extends into the wire feeding assembly. It is connected to the wire feeding wheel in the wire feeding assembly through a transmission structure. The wire feeding assembly is located on the end face of the substrate pad and rotates with the substrate pad. The wire outlet joint in the wire feeding assembly faces the welding assembly. The wire outlet joint is connected to the short wire guide tube through a long wire guide tube.

2. The narrow gap welding torch of claim 1, wherein: The drive mechanism includes a motor housing, a DC motor, an operation box, and a button panel. The motor housing encloses the DC motor inside, the operation box is mounted on the motor housing, and a controller electrically connected to the DC motor is located inside the operation box. The buttons on the button panel are electrically connected to the controller to control the operation of the equipment.

3. The narrow-pitch welding torch with wire feeding assembly and rotation according to claim 1, characterized in that: The transmission wheel set adopts a one-main-four-auxiliary wheel set structure. The main transmission wheel meshes with two auxiliary transmission wheels, and each of the two auxiliary transmission wheels meshes with one auxiliary transmission wheel. Finally, the auxiliary transmission wheels mesh with the welded gear.

4. The narrow gap welding torch of claim 1, wherein: The welding assembly includes a welding torch head, a tungsten needle, and a ceramic nozzle. The welding torch head is mounted on the welding assembly mounting plate, and the welding torch head is equipped with a ceramic nozzle. A tungsten needle is installed inside the ceramic nozzle, and the tungsten needle faces the point to be welded.

5. The narrow gap welding torch of claim 1, wherein: The wire guide assembly includes a wire guide base plate, a wire guide cover plate, a wire guide support, a wire guide bracket, and a wire guide tube. The wire guide base plate is mounted on the welding assembly mounting plate. The wire guide cover plate is connected to the wire guide base plate through the wire guide support. The wire guide tube is disposed between the wire guide cover plate and the wire guide base plate through the wire guide support, and the wire outlet of the wire guide tube faces the point to be welded.

6. The narrow gap welding torch of claim 1, wherein: A heat-resistant pad is provided between the welding gear and the welding assembly mounting plate to prevent the high temperature generated during the welding process from damaging the transmission cavity.

7. The narrow gap welding torch of claim 1, wherein: The transmission structure includes a first transmission wheel, a second transmission wheel, and a first transmission shaft. The first transmission wheel is fixedly connected to the output end of the wire feeding motor and meshes with the second transmission wheel. The second transmission wheel is fixedly connected to the first transmission shaft, and the first transmission shaft is fixedly connected to the wire feeding wheel. Thus, when the wire feeding motor is working, it drives the first transmission wheel to rotate, which in turn drives the second transmission wheel and the first transmission shaft to rotate in sequence, and finally drives the wire feeding wheel to rotate, thus completing the wire feeding.

8. A narrow-pitch welding torch with a wire feeding assembly and rotation according to claim 1, characterized in that: The wire feeding assembly includes a wire feeding base plate, a wire feeding cover plate, a wire feeding wheel, a wire inlet connector, a wire outlet connector, a bearing, and a clamping assembly. The wire feeding base plate is fixed on a base plate gasket. The wire feeding wheel, which rotates with the operation of the wire feeding motor, is provided on the wire feeding base plate. The clamping assembly is provided on the wire feeding base plate and is connected to a bearing so that the surface of the outer ring of the bearing contacts the surface of the outer ring of the wire feeding wheel. The surface of the outer ring of the wire feeding wheel is provided with a groove for the welding wire to pass through. The wire inlet connector and the wire outlet connector are respectively provided on both sides of the connection between the bearing and the wire feeding wheel.

9. The narrow gap welding torch of claim 8, wherein: The clamping assembly includes a pressure roller pin, a pressure screw, a clamping screw, a clamping nut, and a clamping washer. The clamping screw is fixed on the wire feeding plate. One end of the pressure screw is fixed on the wire feeding plate, and the other end is connected to the clamping screw through the clamping nut. The clamping washer is disposed between the clamping nut and the pressure screw. One end of the pressure roller pin is connected to a bearing, and the other end is connected to the pressure screw. By tightening the clamping nut, the pressure screw is driven to retract toward the clamping screw, which in turn drives the bearing to tighten toward the wire feeding roller.

10. The narrow gap welding torch of claim 8, wherein: The wire feeding assembly is equipped with a wire guide wheel, which is connected to the welding wire in the wire spool assembly. The welding wire enters the wire feed joint of the wire feeding assembly through the wire guide wheel.

11. The narrow gap welding torch of claim 1, wherein: The wire feeding bracket is equipped with a tension adjustment plate, which is rotatably connected to the wire feeding bracket. The end face of the tension adjustment plate is connected to the outer side of the belt to tension the belt.

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