Quick adjusting device for preventing winding of robot welding gun

Abstract

The utility model discloses an anti-winding quick adjusting device for a robot welding gun, which relates to the technical field of welding equipment and comprises a rotary hollow fixed disc, a wire feeding hose and a welding gun assembly, and the rotary hollow fixed disc is in transmission connection with a rotary driving device; the wire feeding hose penetrates through the middle of the rotary hollow fixing disc and communicates with a wire inlet of the welding gun assembly. The center line of the wire feeding hose is coaxial with the rotating axis of the rotating hollow fixing disc. Therefore, by adjusting the installation position of the wire feeding hose, it is guaranteed that the welding gun assembly does not interfere with the welding gun assembly in motion when rotating, the wire feeding smoothness is guaranteed, the welding efficiency is improved, and the welding seam quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a quick adjustment device for preventing entanglement of a robot welding torch. Background Art

[0002] During the production and manufacturing process of vehicles, welding is used to ensure its firmness. Taking a tractor as an example, the cab of the tractor is formed by welding after multiple steel plates are spliced. When using an external welding torch articulated arm or a gantry frame type automatic welding robot for welding, the front joint of the welding robot needs to rotate at multiple angles to meet the welding requirements at multiple angles. However, the wire feeding hose connected to the welding torch cannot rotate at any angle following the front joint of the articulated arm welding robot. Therefore, when the front joint of the articulated arm automatic welding robot rotates to the limit position, interference with the outer wire feeding hose often occurs. To prevent further interference, generally, the welding torch needs to be adjusted in the opposite direction, which will cause welding interruption, and problems such as arc ignition and blockage of the welding torch nozzle will also occur, affecting the weld quality and operation efficiency.

[0003] In the prior art, there is a patent application document with a publication number of CN202192385U and a name of a welding torch rotary circular welding machine. In this document, by setting a synchronously rotating conductive copper ring and using a conductive carbon brush matched with the conductive copper ring to connect the conductive cable and the gas pipeline during the operation of the welding torch rotary circular welding machine, interference is not generated during the rotation process, so that the welding torch can rotate infinitely without the problem of entanglement of the cable and the gas pipeline. When this technology is actually used, affected by the high temperature during welding, the power-on continuity is not strong, and welding problems such as sudden arc interruption are likely to occur, and the stability is not strong. Summary of the Utility Model

[0004] To overcome the above defects, the purpose of the utility model is to provide a quick adjustment device for preventing entanglement of a robot welding torch, which adjusts the installation position of the wire feeding hose to ensure that there is no movement interference with the welding torch assembly during the rotation of the welding torch assembly, ensure the smoothness of wire feeding, improve the welding efficiency, and ensure the weld quality.

[0005] To achieve the above purpose, the utility model provides a quick adjustment device for preventing entanglement of a robot welding torch, including a rotating hollow fixed disk, a wire feeding hose, and a welding torch assembly. The rotating hollow fixed disk is connected to a rotation driving device, and the wire feeding hose passes through a central through hole of the rotating hollow fixed disk and is connected to the welding torch assembly.

[0006] Preferably, the robotic arm of the robot serves as the rotation driving device. The rotating hollow fixed disk is provided with an internal threaded hole for threaded connection with the robotic arm. The internal threaded hole is larger than the central through hole, and the internal threaded hole and the central through hole are in a stepped shape.

[0007] Preferably, the rotary drive device includes a servo motor. A connecting seat is provided between the servo motor and the rotary hollow fixed disk. The servo motor is located above the connecting seat. The servo motor and the rotary hollow fixed disk are connected by a transmission mechanism. The rotary hollow fixed disk is rotationally clamped to the lower part of the connecting seat.

[0008] Preferably, the transmission mechanism is a gear transmission mechanism. The gear transmission mechanism includes a first transmission gear and a second transmission gear that mesh with each other. The first transmission gear is located in the middle of the rotary hollow fixed disk and is fixedly connected to the rotary hollow fixed disk. The output shaft of the servo motor is connected to the second transmission gear.

[0009] Preferably, an angle adjustment mechanism is provided between the rotary hollow fixed disk and the welding torch assembly. The angle adjustment mechanism is used to adjust the angle of the welding torch assembly.

[0010] Preferably, the angle adjustment mechanism includes a connecting plate, a correction seat, and a welding torch bracket. The connecting plate is fixed to the bottom of the rotary hollow fixed disk. The correction seat and the connecting plate are fixedly connected by a threaded fastener. A correction disk is fixed to the lower end of the correction seat. A plurality of correction disk adjustment holes are provided on the correction disk. An adjustment disk adapted to the correction disk is provided at the upper end of the welding torch bracket. A plurality of adjustment disk adjustment holes are provided on the adjustment disk. A limit pin is inserted into at least one pair of corresponding correction disk adjustment holes and adjustment disk adjustment holes.

[0011] Preferably, a positioning shaft is inserted into the middle of the correction disk and the adjustment disk.

[0012] Preferably, both the correction disk and the adjustment disk are disk-shaped.

[0013] Preferably, two adjustment disks are provided at intervals. A card slot is formed between the two adjustment disks. The correction disk is located in the card slot.

[0014] Preferably, two correction disks are provided at intervals. A card slot is formed between the two correction disks. The adjustment disk is located in the card slot.

[0015] After adopting the above technical solution, the beneficial technical effects achieved by the present utility model are:

[0016] 1. Due to the setting of the rotating hollow fixed disk, the wire feeding hose and the welding torch assembly, the rotating hollow fixed disk is drivingly connected with a rotating driving device; the wire feeding hose penetrates through the middle of the rotating hollow fixed disk and communicates with the welding torch assembly. The wire feeding hose is close to the middle of the fixed seat, and the wire feeding hose is coaxial with the rotation axis of the rotating hollow fixed disk. In this way, when the rotating hollow fixed disk is driven to rotate by a servo motor, there will be no movement interference with the wire feeding hose, thus solving the problem of extreme twisting caused by the interference between the rotation of the joint arm or other mechanical structures and the wire feeding hose when the robot installs an external welding torch assembly. Continuous welding can be carried out, while ensuring the weld quality, the welding efficiency can also be improved.

[0017] 2. Since an angle adjusting mechanism for connecting and adjusting the angle of the welding torch assembly is provided between the rotating hollow fixed disk and the welding torch assembly, the angle adjusting mechanism includes a connecting plate, a correcting seat and a welding torch bracket; the lower end of the connecting plate is a correcting disk, and a plurality of adjusting holes are provided on the correcting disk. The upper end of the welding torch bracket is adapted to the correcting disk, and a limiting pin for restricting the rotation angle is inserted into one of the correcting disk adjusting holes. According to the welding position requirements, the angle of the welding torch assembly is adjusted, so that the robot can better meet the working requirements of more working conditions. After the adjustment is completed, the limiting pin is directly inserted to achieve fixation, ensuring the stability of the connection.

[0018] 3. The rotating driving device can be selected in two ways. The end of the robotic arm can be selected as the rotating power. At this time, the present utility model can be applied to a joint welding robot. Driven by the joint welding robot, the position can be adjusted to complete the welding; the rotating power can also be a servo motor. This implementation mode is applied to a gantry frame type welding robot, so that the rotating hollow fixed disk of the present utility model is adapted to two welding devices, expanding the application range, improving the economic practicality, being suitable for the upgrade and transformation of existing equipment, and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a robot welding torch anti-winding and quick-adjusting device according to Embodiment 1 of the present utility model;

[0020] Figure 2 is Figure 1 the sectional view taken along line A-A in

[0021] Figure 3 is a schematic diagram of a robot welding torch anti-winding and quick-adjusting device according to Embodiment 2 of the present utility model;

[0022] Figure 4 is Figure 3 the internal structure sectional view of

[0023] In the figure,

[0024] 1. Welding torch assembly;

[0025] 2. Wire feeding hose

[0026] 3. Rotating hollow fixed disk; 31. Connecting thread; 32. Central through hole; 33. First driving gear; 34. Second driving gear

[0027] 4. Angle adjusting mechanism; 41. Connecting plate; 42. Correction seat; 421. Correction disk; 422. Correction disk adjusting hole; 43. Welding torch bracket; 44. Positioning shaft; 45. Limit pin

[0028] 5. Connecting seat; 51. Servo motor Detailed implementation manners

[0029] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] Embodiment 1

[0031] Refer to Figure 1 、 Figure 2 For the quick adjustment device for preventing entanglement of the robot welding torch of Embodiment 1 of the present utility model, it includes a rotating hollow fixed disk 3, a wire feeding hose 2 and a welding torch assembly 1. The rotating hollow fixed disk 3 is connected to a rotating drive device. The wire feeding hose 2 passes through the central through hole 32 of the rotating hollow fixed disk 3 and is connected to the welding torch assembly 1. The rotating hollow fixed disk 3 is generally circular. After a central through hole 32 is opened in the middle thereof, the wire feeding hose 2 penetrates the central through hole 32 of the rotating hollow fixed disk 3 and then is connected to the welding torch assembly 1. In this way, when the rotating hollow fixed disk 3 drives the welding torch assembly 1 to rotate in angle, since the rotation axis of the central through hole 32 is basically coaxial with the axis of the wire feeding hose 2, therefore, when the welding torch assembly 1 is in the horizontal direction, no matter how it rotates, it will not interfere with the wire feeding hose 2, thus ensuring the continuity of wire feeding and realizing continuous welding.

[0032] The rotating drive device of the present utility model is a servo motor 51. The robotic arm of the robot serves as the rotating drive device. The rotating hollow fixed disk 3 is provided with an internal threaded hole for threaded connection with the robotic arm. The internal threaded hole is larger than the central through hole 32, and the internal threaded hole and the central through hole 32 are in a stepped shape. When the rotating power is the servo motor 51, such as when the welding torch assembly 1 is connected to a gantry welding device through the connecting seat 5, the power of the rotating hollow fixed disk 3 comes from the servo motor 51. At this time, the servo motor 51 is used to provide rotating power for the welding torch assembly 1 during the welding process. The central through hole 32 is in a stepped shape to leave more space to facilitate the realization of the function of clamping and rotating and avoid interference with the intermediate rotating shaft.

[0033] During the above process, in order to achieve quick connection, the generally rotating hollow fixed disk 3 adopts a rotating stepped hollow circular arc-shaped structure design and is quickly clamped to the bottom of the connection seat 5 through a quick clamping groove. The reducer of the servo motor 51 is drivingly connected to the rotating hollow fixed disk 3. The connection method of the above quick clamping groove is a prior art and a quick-release joint can be adopted, which is widely used in quick-release water pipes. Generally, a plurality of balls are also arranged in the clamping groove and rotation is not affected after connection. The transmission mechanism is a gear transmission mechanism, which includes a first transmission gear 33 and a second transmission gear 34 that are meshed with each other. The first transmission gear 33 is located on the outer periphery of the middle through hole 32, and the first transmission gear 33 is fixedly connected to the rotating hollow fixed disk 3. The output shaft of the servo motor 51 is connected to the second transmission gear 34. Generally, a gear transmission mechanism is adopted as the transmission mechanism. The servo motor 51 is connected to the second transmission gear 34, and the first transmission gear 33 is fixedly connected to the rotating hollow fixed disk 3. When the second transmission gear 34 meshes and drives with the first transmission gear 33, the rotating hollow fixed disk 3 rotates around the clamping shaft in the middle. This part is a mature prior art.

[0034] The rotation driving device of the present utility model includes a servo motor 51. A connection seat 5 is arranged between the servo motor 51 and the rotating hollow fixed disk 3. The servo motor 51 is located above the connection seat 5. The servo motor 51 is connected to the rotating hollow fixed disk 3 through a transmission mechanism. The rotating hollow fixed disk 3 is rotationally clamped to the lower part of the connection seat 5. The purpose of the connection seat 5 is to install the servo motor 51, and through the connection seat 5, the whole welding torch assembly 1 can be connected to the welding robot.

[0035] The connecting plate 41 is rotationally connected to the rotating hollow fixed disk 3 through threads, and then the correction seat 42 and the connecting plate 41 are fixed through nuts. In order to ensure the height of the welding torch in the welding torch assembly 1, when different products need to be welded, the height of the welding torch assembly 1 needs to be adjusted. Along the middle positioning shaft 44, a plurality of correction disk adjustment holes 422 are evenly distributed on the correction disk 421 and the welding torch bracket 43. The welding torch bracket 43 corresponds to the correction disk adjustment holes 422 and is limited by a plug-in limit pin 45. An angle adjustment mechanism 4 is arranged between the rotating hollow fixed disk 3 and the welding torch assembly 1. The angle adjustment mechanism 4 is used to adjust the angle of the welding torch assembly 1.

[0036] The connection parts of the correction disk 421 and the welding torch bracket 43 of the present utility model are both disk-shaped and are evenly provided with a plurality of correction disk adjustment holes 422. The middle part of the correction disk 421 is inserted with a positioning shaft 44 that penetrates the welding torch bracket 43. The disk shape is for convenient processing and can also rotate to adjust the height of the welding torch assembly 1.

[0037] The angle adjustment mechanism 4 of the present utility model includes a connecting plate 41, a correction seat 42, and a welding torch bracket 43; the connecting plate 41 is fixed to the bottom of the rotating hollow fixed disk 3, and the correction seat 42 is fixedly connected to the connecting plate 41 through threaded fasteners; a correction disk 421 is fixed to the lower end of the correction seat 42, and a plurality of correction disk adjustment holes 422 are provided on the correction disk 421. An adjustment disk adapted to the correction disk 421 is provided at the upper end of the welding torch bracket 43, and a plurality of adjustment disk adjustment holes 422 are provided on the adjustment disk. A limit pin 45 is inserted into at least one pair of corresponding correction disk adjustment holes 422 and adjustment disk adjustment holes. A positioning shaft 44 is inserted into the middle of the correction disk 421 and the adjustment disk.

[0038] A card slot (not shown in the figure) is provided at the top of the welding torch bracket 43, and the correction disk 421 is inserted into the card slot. In order to ensure the stability of the connection after angle adjustment, the card slot can be provided between two welding torch brackets 43. The correction disk 421 is placed into the card slot between the two correction disks 421, and then the limit pin 45 is inserted into the corresponding correction disk adjustment hole 422 for fixation, so as to improve the connection stability. In addition to the above method, the position of the card slot can also be set between two correction disks 421, which is basically the same as the above connection method. At this time, the correction disk 421 is placed in the card slot, and then the angle of the welding torch assembly 1 is fixed through the corresponding limit pin 45. The ultimate purpose of both methods is to adjust the angle of the welding torch assembly 1, and the only difference is the position of the card slot. If the processing accuracy is insufficient, in addition to using the limit pin 45 for fixation, a fastening bolt can also be directly used to tightly fix the correction disk 421 and the correction seat 42, which has stronger stability and is applicable to the situation where the correction disk adjustment holes 422 cannot be completely aligned and the limit pin 45 cannot be accurately inserted after rotation. In this embodiment, since the connecting seat 5 and the servo motor 51 are used, it is generally applicable to gantry frame type welding equipment. When connecting, it is fixed to the gantry frame type welding robot through the connecting seat 5.

[0039] Embodiment 2

[0040] As Figure 3 and Figure 4 collectively shown, the robot welding torch anti-winding quick adjustment device of Embodiment 2 of the present utility model is basically the same as Embodiment 1, except that: the transmission mechanism in the connecting seat 5, the servo motor 51, and the rotating hollow fixed disk 3 is omitted. The rotating hollow fixed disk 3 in this embodiment is applicable to an articulated arm robot, that is, the rotation power source of the rotating hollow fixed disk 3 is a robotic arm or an articulated robot. A connecting thread 31 adapted to the robotic arm is provided on the inner wall of the rotating hollow fixed disk 3. See Figure 3, in the attached drawings of this specification, the rotary hollow fixed disk 3 is directly tightened at the end of the robotic arm through the connecting thread 31. When the robotic arm rotates, it drives the rotation of the rotary hollow fixed disk 3, thereby driving the rotational movement of the welding torch assembly 1. The rotation of the lower welding torch assembly 1 driven by the rotary hollow fixed disk 3 and the angle adjustment method are the same as those in the first embodiment and will not be elaborated here.

[0041] Certainly, the present utility model can also have many other embodiments. Without departing from the spirit and essence of the present utility model, those skilled in the art can make various corresponding changes and deformations according to the present utility model. However, these corresponding changes and deformations should all fall within the protection scope of the claims attached to the present utility model.

Claims

1. The robot welding gun anti-winding quick adjustment device is characterized by: It comprises a rotating hollow fixed disk, a wire feeding hose and a welding gun assembly. The rotating hollow fixed disk is connected to a rotating driving device, and the wire feeding hose passes through a middle through hole of the rotating hollow fixed disk and is connected to the welding gun assembly.

2. The anti-winding quick adjustment device for a robot welding gun according to claim 1 is characterized in that: The robot's mechanical arm also serves as the rotation drive device. The rotating hollow fixed disk is provided with an internal threaded hole for threaded connection with the mechanical arm. The internal threaded hole is larger than the middle through hole. The internal threaded hole and the middle through hole are stepped.

3. The anti-winding quick adjustment device for a robot welding gun according to claim 1 is characterized in that: The rotary drive device comprises a servo motor, a connecting seat is provided between the servo motor and the rotating hollow fixed disk, the servo motor is located at the upper part of the connecting seat, the servo motor and the rotating hollow fixed disk are connected through a transmission mechanism, and the rotating hollow fixed disk is rotatably clamped at the lower part of the connecting seat.

4. The anti-winding quick adjustment device for a robot welding gun according to claim 3 is characterized in that: The transmission mechanism is a gear transmission mechanism, which includes a first transmission gear and a second transmission gear that are meshed with each other. The first transmission gear is located in the middle of the rotating hollow fixed disk and is fixedly connected to the rotating hollow fixed disk. The output shaft of the servo motor is connected to the second transmission gear.

5. The anti-winding quick adjustment device for a robot welding gun according to claim 1, characterized in that: An angle adjustment mechanism is provided between the rotating hollow fixed disk and the welding gun assembly, and the angle adjustment mechanism is used to adjust the angle of the welding gun assembly.

6. The anti-winding quick adjustment device for a robot welding gun according to claim 5, characterized in that: The angle adjustment mechanism comprises a connecting plate, a correction seat and a welding gun bracket; the connecting plate is fixed to the bottom of the rotating hollow fixed disk, and the correction seat is fixedly connected to the connecting plate by a threaded fastener; A correction disk is fixed at the lower end of the correction seat, and a plurality of correction disk adjustment holes are arranged on the correction disk. An adjustment disk adapted to the correction disk is arranged at the upper end of the welding gun bracket, and a plurality of adjustment disk adjustment holes are arranged on the adjustment disk. A limiting pin is inserted in at least one corresponding correction disk adjustment hole and the adjustment disk adjustment hole.

7. The anti-winding quick adjustment device for a robot welding gun according to claim 6, characterized in that: A positioning shaft is inserted in the middle of the correction disk and the adjustment disk.

8. The anti-winding quick adjustment device for a robot welding gun according to claim 6, characterized in that: The correction disk and the adjustment disk are both in the shape of discs.

9. The anti-winding quick adjustment device for a robot welding gun according to claim 6, characterized in that: Two adjusting disks are arranged at intervals, a slot is formed between the two adjusting disks, and the correction disk is located in the slot.

10. The anti-winding quick adjustment device for a robot welding gun according to claim 6, characterized in that: Two correction disks are arranged at intervals, a slot is formed between the two correction disks, and the adjustment disk is located in the slot.

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