Modularized structure for rapidly replacing and installing welding gun

Abstract

The utility model discloses a modular structure for quickly replacing and installing a welding gun, which comprises a positioning shaft, a positioning disc arranged at the lower end of the positioning shaft, a rotating shaft arranged at the bottom of the positioning disc, a shaft seat rotatably connected with the rotating shaft, a motor arranged on the positioning disc, an output shaft of the motor coaxially and fixedly connected with a driving gear, and a driven gear coaxially and fixedly arranged on the rotating shaft. A rotating disc is coaxially arranged at the lower end of the rotating shaft, a plurality of guide rods are arranged at the bottom of the rotating disc in the circumferential direction, each guide rod is sleeved with a guide sleeve capable of moving along the guide rod in a guiding mode, and a telescopic rod is arranged on the portion, above each guide sleeve, of the rotating disc; the telescopic end of each telescopic rod penetrates through the rotating disc to be connected with a connecting base arranged on the side wall of the corresponding guide sleeve, a welding gun fixing base is arranged on the side wall of each guide sleeve, and a welding gun is arranged on each welding gun fixing base. The automatic welding gun replacing device can achieve alternate operation of multiple welding guns, is high in welding gun replacing efficiency, and saves manual labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a modular structure for quick-change welding torches. Background Technology

[0002] Welding machines are devices used to join various fusible alloy (solder) metal parts. They come in many types, including single-point single-function, single-point dual-function, and single-point multi-function machines. Welding robots were developed to replace manual welding and are a type of welding machine. They offer advantages such as high automation and labor savings, and typically use a welding torch at their end effector.

[0003] Most existing welding robots only have one welding torch at the end. When the welding torch is damaged or when different welding methods need to be used for alternating operations, the welding torch needs to be disassembled and replaced manually. Since the welding torch operates for a long time and the temperature is high, manual replacement can easily cause burns. In addition, the manual torch replacement process is cumbersome and reduces welding efficiency. Utility Model Content

[0004] This utility model provides a modular structure for quick-change welding torches, which solves the problems of traditional welding robots having inconvenient end-effector welding torches that result in limited welding processes, inability to meet the requirements of alternating operations of multiple welding processes, and reduced welding efficiency due to manual torch replacement.

[0005] This utility model provides a modular structure for quick-change welding torches, including a positioning shaft, a positioning plate coaxially mounted at the lower end of the positioning shaft, a rotating shaft coaxially mounted at the bottom of the positioning plate, an upper end of the rotating shaft rotatably connected to a bearing seat at the bottom of the positioning plate, a motor mounted on the positioning plate, the output shaft of the motor extending through a mounting hole on the positioning plate to the bottom of the positioning plate, a driving gear coaxially fixed on the output shaft of the motor, a driven gear coaxially fixed on the rotating shaft, the driving gear and the driven gear meshing and transmitting power to each other, a rotating disk coaxially mounted at the lower end of the rotating shaft, multiple guide rods arranged circumferentially at the bottom of the rotating disk, a guide sleeve that can move along the guide rod fitted on each guide rod, a telescopic rod mounted on the rotating disk above each guide sleeve, the telescopic end of each telescopic rod passing through the rotating disk and connected to a connecting seat on the side wall of the corresponding guide sleeve, a welding torch fixing seat mounted on the side wall of each guide sleeve, and a welding torch mounted on each welding torch fixing seat.

[0006] Furthermore, each of the welding torch holders is provided with a positioning hole, and a threaded hole is provided on the inner side wall of the positioning hole. An adjusting screw for fixing the welding torch in the positioning hole is provided in the threaded hole.

[0007] Furthermore, the transmission ratio between the driving gear and the driven gear is 3:1.

[0008] Furthermore, a central hole is provided in the middle of the rotating disk, and a screw hole is provided at the lower end of the rotating shaft. An internal hexagonal head screw passes through the central hole and the screw hole to fix the rotating disk and the rotating shaft together.

[0009] Furthermore, each of the guide rods has a rectangular cross-section, and the shape of the guide hole in each guide sleeve is the same as the cross-sectional shape of the guide rod.

[0010] Furthermore, a camera bracket is provided on the side wall of each guide sleeve, and a camera is mounted on the camera bracket.

[0011] As can be seen from the above technical solutions, this utility model provides a modular structure for quick-change welding torches.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention uses a motor to drive a drive gear, which in turn drives a driven gear and a rotating shaft. The rotating shaft then drives a rotating disk, which in turn drives three guide sleeves and welding torches mounted on guide rods. This allows for rapid interchange of the three welding torches, meeting the welding process requirements of different welding torches at the same workstation. It eliminates the need for manual torch replacement, saving labor intensity. Compared to manual torch replacement, it is more efficient and safer. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the implementation examples will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a modular structure for quick-change welding torch proposed in this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of a modular structure for quick-change welding torch proposed in this utility model;

[0017] Figure 3 Appendix to this utility model Figure 2 A partially enlarged structural diagram of position I;

[0018] Figure 4 This is a three-dimensional structural diagram of a modular structure for quick-change welding torch proposed in this utility model, mounted on the main body of a robotic arm.

[0019] In the picture:

[0020] 1-Location axis;

[0021] 2-Positioning plate; 21-Shaft seat;

[0022] 3-Rotating shaft; 31-Driven gear; 32-Internal hex socket head cap screw;

[0023] 4-Welding torch;

[0024] 5-Motor; 51-Drive gear;

[0025] 6-Spinning disc;

[0026] 7-Guide rod;

[0027] 8-Guide sleeve; 81-Connecting seat; 82-Welding torch holder; 83-Positioning hole; 84-Adjusting screw; 85-Camera bracket; 86-Camera;

[0028] 9-Telescopic pole;

[0029] 10-Main body of the robotic arm. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0031] Example 1:

[0032] See Figure 1-4 A modular structure for quick-change welding torch includes a positioning shaft 1, a positioning disk 2 coaxially mounted at the lower end of the positioning shaft 1, a rotating shaft 3 coaxially mounted at the bottom of the positioning disk 2, the upper end of the rotating shaft 3 being rotatably connected to a bearing 21 at the bottom of the positioning disk 2, a motor 5 mounted on the positioning disk 2, the output shaft of the motor 5 extending through a mounting hole on the positioning disk 2 to the bottom of the positioning disk 2, a drive gear 51 coaxially fixed on the output shaft of the motor 5, and a driven gear 31 coaxially fixed on the rotating shaft 3, the drive gear 51 and the driven gear 31 being mutually... The meshing transmission is coordinated, and a rotating disk 6 is coaxially arranged at the lower end of the rotating shaft 3. Three guide rods 7 are arranged along the circumferential direction at the bottom of the rotating disk 6. A guide sleeve 8 that can move along the guide rod 7 is fitted on each guide rod 7. A vertical telescopic rod 9 is arranged on the rotating disk 6 above each guide sleeve 8. The telescopic end of each telescopic rod 9 passes through the rotating disk 6 and is connected to the connecting seat 81 arranged on the side wall of the corresponding guide sleeve 8. A welding gun fixing seat 82 is fixedly arranged on the side wall of each guide sleeve 8, and a welding gun 4 is fixedly arranged on each welding gun fixing seat 82.

[0033] In this embodiment, by coaxially welding and fixing the lower end of the positioning shaft 1 to the upper part of the positioning disk 2, the positioning shaft 1 can quickly measure and position based on the original position of the robot body 10. The bottom of the positioning disk 2 is rotatably connected to the rotating shaft 3 through the bearing 21, so that the rotating shaft 3 can rotate freely on the positioning disk 2 to complete the position switching of the welding gun. The motor 5 on the positioning disk 2 drives the drive gear 51 to rotate. The drive gear 51 and the driven gear 31 mesh with each other to drive the rotating shaft 3 to rotate. The motor 5 can be an integrated drive and control servo motor. The lower end of the rotating shaft 3 is fixedly connected to the rotating disk 6, so that the rotating disk 6 can rotate coaxially with the rotating shaft 3. Three guide rods 7 are fixedly set along the circumferential direction at the bottom of the rotating disk 6, and a guide sleeve 8 that can move along the guide rod 7 is sleeved on each guide rod 7, so that the guide sleeve 8 can rise or fall along the guide rod 7. A vertically fixed telescopic rod 9 is mounted on top of the rotating disk 6. The telescopic rod 9 can be an electric telescopic rod or a cylinder. The telescopic end of the telescopic rod 9 passes downward through the rotating disk 6 and connects to the connecting seat 81 set on the side wall of the guide sleeve 8. The telescopic rod 9 can drive the guide sleeve 8 to move up and down along the guide rod 7. A welding gun fixing seat 82 is set on the side wall of the guide sleeve 8. The welding gun 4 is fixedly installed on the welding gun fixing seat 82. The motor 5 drives the drive gear 51 to drive the driven gear 31 and the rotating shaft 3 to rotate. The rotation of the rotating shaft 3 drives the rotating disk 6 to rotate. The rotation of the rotating disk 6 can drive the three guide sleeves 8 and the welding gun 4 installed on the guide rod 7 to rotate, so that the positions of the three welding guns 4 can be quickly interchanged, which can meet the welding process requirements of different welding guns in the same work position. There is no need to manually change the welding gun, which saves labor intensity. The efficiency of changing the welding gun is higher than that of manual gun changing, and the gun changing process is safer.

[0034] Specifically, see Figure 3 The welding torch holder 82 is provided with a vertical positioning hole 83. A horizontal threaded hole is provided on the inner side wall of the positioning hole 83. An adjusting screw 84 is provided in the threaded hole to fix the welding torch 4 in the positioning hole 83. When the welding torch 4 is inserted into the positioning hole 83 on the welding torch holder 82, the adjusting screw 84 is used to press the welding torch 4 against the inner side wall of the positioning hole 83 in the radial direction to fix it. The welding torch 4 is easy to disassemble and assemble.

[0035] More specifically, the transmission ratio between the driving gear 51 and the driven gear 31 is 3:1. When the driving gear 51 rotates one revolution, the driven gear 31 drives the rotating shaft 3 to rotate 1 / 3 revolution, thereby enabling the welding guns 4 at the three stations to precisely switch positions. In addition, when switching the positions of the three stations, the driving gear 51 rotates one revolution clockwise, and the driven gear 31 drives the rotating shaft 3 to rotate 1 / 3 revolution counterclockwise, which can switch the welding gun from the first station to the second station. Then, the driving gear 51 rotates two revolutions counterclockwise, and the driven gear 31 drives the rotating shaft 3 to rotate 2 / 3 revolution clockwise, which can switch the welding gun from the second station to the third station, thereby ensuring that the welding machine corresponding to the welding gun 4 supplies welding wire normally.

[0036] As a preferred embodiment of the above embodiments, a central hole is provided in the middle of the rotating disk 6, and a screw hole is provided at the lower end of the rotating shaft 3. The hexagonal socket head cap screw 32 passes through the central hole and the screw hole to fix the rotating disk 6 and the rotating shaft 3, so that the rotating disk 6 and the rotating shaft 3 are movably connected, which facilitates disassembly, installation and maintenance.

[0037] Understandable, see Figure 3 Each guide rod 7 has a rectangular cross-section, and the guide hole of the guide sleeve 8 has the same shape as the cross-sectional shape of the guide rod 7, so that the guide sleeve can only move along the guide rod 7 and cannot rotate, so that the welding torch 4 can be precisely displaced vertically according to the stroke of the telescopic rod 9.

[0038] Preferably, see Figure 3 Each guide sleeve 8 is provided with a camera bracket 85 on its side wall, and a camera 86 is provided on the camera bracket 85. The switching status of the welding torch 4 can be remotely monitored through the camera 86.

[0039] As can be seen from the above technical solution, during use, the positioning shaft 1 is inserted into the original welding torch fixing hole at the end of the robot body 10 and fixed. Then, at least two welding torches 4 (one is an argon arc welding torch, and the other is a MIG welding torch; alternatively, two identical welding torches can be installed. By adjusting the ratio of supplied argon and carbon dioxide, the two identical welding torches can achieve different welding methods (such as jet transfer and short-circuit transfer), thus adapting to different materials, thicknesses, and process requirements). After the welding torches 4 are installed, firstly, during initial welding, the robot body 10 is manually adjusted to move the welding torches 4 to the predetermined position. Then, the welding position is locked by a vision sensor, and the robot body 10 transfers the welding torch of the first station to directly above the position to be welded. The controller controls the welding position. The telescopic rod 9 drives its telescopic end to push the guide sleeve 8 downward along the guide rod 7, so that the welding gun 4 on the guide sleeve 8 contacts the welding position. Then, power is turned on for welding. When the welding gun needs to be changed during the welding process, the controller controls the motor 5 to drive the drive gear 51 to drive the driven gear 31 and the rotating shaft 3 to rotate. The rotation of the rotating shaft 3 drives the rotating disk 6 to rotate. The rotation of the rotating disk 6 can drive the three guide sleeves 8 and the welding gun 4 installed on the guide rod 7 to rotate, so that the positions of the welding gun 4 at the first station and the welding gun 4 at the second installation position can be quickly interchanged. This can meet the welding process requirements of different welding guns at the same station. There is no need to manually change the welding gun, which saves labor intensity. The process of changing the welding gun 4 is more efficient than the previous manual gun change and the gun change process is safer.

[0040] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of the invention is indicated by the claims.

[0041] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model.

Claims

1. A modular structure for quick-change welding torches, characterized in that: The system includes a positioning shaft (1), a positioning disk (2) coaxially mounted at the lower end of the positioning shaft (1), a rotating shaft (3) coaxially mounted at the bottom of the positioning disk (2), the upper end of the rotating shaft (3) being rotatably connected to a bearing seat (21) mounted at the bottom of the positioning disk (2), a motor (5) mounted on the positioning disk (2), the output shaft of the motor (5) extending through a mounting hole on the positioning disk (2) to the bottom of the positioning disk (2), a drive gear (51) coaxially fixed on the output shaft of the motor (5), and a driven gear (31) coaxially fixed on the rotating shaft (3), the drive gear (51) and the driven gear (31) meshing with each other. In the transmission coordination, a rotating disk (6) is coaxially arranged at the lower end of the rotating shaft (3). Multiple guide rods (7) are arranged along the circumferential direction at the bottom of the rotating disk (6). A guide sleeve (8) that can move along the guide rod (7) is sleeved on each guide rod (7). A telescopic rod (9) is arranged on the rotating disk (6) above each guide sleeve (8). The telescopic end of each telescopic rod (9) passes through the rotating disk (6) and is connected to the connecting seat (81) arranged on the side wall of the corresponding guide sleeve (8). A welding gun fixing seat (82) is arranged on the side wall of each guide sleeve (8), and a welding gun (4) is arranged on each welding gun fixing seat (82).

2. The modular structure for quick-change welding torches according to claim 1, characterized in that, The welding torch holder (82) is provided with a positioning hole (83), and a threaded hole is provided on the inner side wall of the positioning hole (83). An adjusting screw (84) for fixing the welding torch (4) in the positioning hole (83) is provided in the threaded hole.

3. The modular structure for quick-change welding torches according to claim 1, characterized in that, The transmission ratio between the driving gear (51) and the driven gear (31) is 3:

1.

4. The modular structure for quick-change welding torches according to claim 1, characterized in that, The rotating disk (6) has a central hole in the middle and the rotating shaft (3) has a screw hole at the lower end. The hexagonal head screw (32) passes through the central hole and the screw hole to fix the rotating disk (6) and the rotating shaft (3) in place.

5. The modular structure for quick-change welding torches according to claim 1, characterized in that, Each of the guide rods (7) has a rectangular cross-section, and the shape of the guide hole of the guide sleeve (8) is the same as the cross-sectional shape of the guide rod (7).

6. The modular structure for quick-change welding torches according to claim 5, characterized in that, Each of the guide sleeves (8) is provided with a camera bracket (85) on its side wall, and a camera (86) is provided on the camera bracket (85).

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