Mounting structure of welding gun for mechanical arm

Abstract

The utility model belongs to the field of welding tools, and particularly relates to a mounting structure of a welding gun for a mechanical arm, which comprises the mechanical arm and a frame. The mechanical arm comprises a mechanical arm body, a mounting base and a mounting frame, the mounting base and the mounting frame are movably mounted at the two ends of the mounting base correspondingly, the lower end of the mounting frame is fixedly connected with the frame, a transmission assembly is mounted in the middle of the frame, and clamping assemblies are rotationally connected to the two ends of the transmission assembly correspondingly. The lower end of the clamping assembly is fixedly connected with a limiting assembly, the middle of the clamping assembly is movably connected with a welding gun, and the welding gun penetrates to the outer side of the mounting frame. According to the welding gun clamping device, through the structural design of the clamping assembly and the transmission assembly, the rotating disc is rotated to drive the extrusion plate of the clamping assembly to clamp a welding gun, and the function of clamping the welding gun is achieved.

Description

Technical Field

[0001] The utility model relates to the field of welding jigs, in particular to an installation structure of a welding torch for a robotic arm. Background Technique

[0002] A welding torch refers to the part that performs welding operations during the welding process. It is a tool for gas welding, shaped like a gun, with a nozzle at the front end that sprays a high-temperature flame as a heat source. It is flexible, convenient and fast, and the process is simple. To adapt to the modern development, the welding torch is now also installed on the robotic arm, and the robotic arm is operated automatically to complete welding, and the welding quality is relatively good.

[0003] Currently, when installing a welding torch on a robotic arm, it is usually fixed by bolts. This installation method is rather troublesome when it comes to maintenance or replacing different welding torches. The installation frame needs to be removed uniformly for installation, and the replacement time is relatively long, occupying production time.

[0004] Therefore, an installation structure of a welding torch for a robotic arm is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art, when the welding torch is installed on the robotic arm, it is usually fixed by bolts. This installation method is rather troublesome when it comes to maintenance or replacing different welding torches. The installation frame needs to be removed uniformly for installation, and the replacement time is relatively long, occupying production time. The utility model proposes an installation structure of a welding torch for a robotic arm.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an installation structure of a welding torch for a robotic arm, including a robotic arm and a frame; the robotic arm includes a robotic arm body, an installation base and an installation frame. The installation base and the installation frame are respectively movably installed at both ends of the installation base. The lower end of the installation frame is fixedly connected to the frame. A transmission component is installed in the middle of the frame. Both ends of the transmission component are rotatably connected to a clamping component. The lower end of the clamping component is fixedly connected to a limiting component. The middle of the clamping component is movably connected to a welding torch, and the welding torch penetrates to the outside of the installation frame.

[0007] Preferably, the transmission component includes a turntable. One side of the turntable close to the frame is fixedly connected to a telescopic rod. The telescopic rod is movably connected to the frame. One side of the telescopic rod close to the frame is fixedly connected to a third transmission gear. The third transmission gear meshes with two symmetric first transmission gears. Opposite sides of the two first transmission gears both mesh with second transmission gears. Opposite sides of the two second transmission gears both mesh with racks. Both racks are clamped to the clamping component. The third transmission gear, the second transmission gear and the first transmission gear are all rotatably connected to the frame through a rotating shaft.

[0008] Preferably, two symmetrical limiting columns are fixedly connected to the side of the telescopic rod, and the limiting columns are clamped with the frame.

[0009] Preferably, the clamping assembly includes a clamping disc. A limiting disc is rotatably sleeved inside the clamping disc. A plurality of annularly distributed sliding columns are slidably connected to the middle of the limiting disc. The upper ends of the plurality of sliding columns are all rotatably connected with pressing plates. The clamping disc is slidably connected with the pressing plates through limiting grooves. A plurality of first guiding columns matching the pressing plates are fixedly connected to the inner side of the clamping disc. The pressing plates are slidably sleeved with the first guiding columns through sliding grooves. One side of the limiting disc 805 is fixedly connected with a connecting rod 808. The other side of the connecting rod away from the clamping disc is slidably sleeved with a second guiding column. The second guiding column is fixedly connected with the rack. The lower clamping disc is fixedly connected with the limiting assembly.

[0010] Preferably, the clamping disc is provided with a sliding groove. The clamping disc is slidably sleeved with the connecting rod through the sliding groove. The limiting disc is provided with a plurality of limiting card slots matching the pressing plates.

[0011] Preferably, the limiting assembly includes a roller. The roller is fixedly connected with a support plate through a rotating shaft. The upper end of the support plate is fixedly connected with the clamping disc. The support plate is slidably sleeved with the frame. A plurality of guiding rods are slidably sleeved on the upper end of the support plate. The plurality of guiding rods are fixedly connected with the frame. Compression springs are arranged between the plurality of guiding rods and the frame.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. Through the structural design of the clamping assembly and the transmission assembly of the present utility model, by rotating the turntable, the pressing plate of the clamping assembly is driven to clamp the welding torch, realizing the function of clamping the welding torch.

[0014] 2. Through the structural design of the limiting assembly of the present utility model, when encountering a protrusion, by driving the roller support plate and the clamping disc to move upward, the problem that the welding torch can retract inward when encountering a protrusion is solved, improving the adaptability of the welding torch. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a structural schematic diagram of an installation structure of a welding torch for a robotic arm of the present utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the robotic arm and the welding torch of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the transmission component and the limit component of the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the transmission component and the clamping component of the present utility model;

[0020] Figure 5 This is the present utility model Figure 3 An enlarged schematic diagram;

[0021] Figure 6 This is a schematic diagram of the structure of the clamping component of the present utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the limit post of the transmission component of the present utility model.

[0023] In the figure: 1. Robotic arm; 2. Installation base; 3. Welding torch; 4. Installation frame; 5. Frame; 6. Transmission component; 601. Turntable; 602. Telescopic rod; 603. First transmission gear; 604. Second transmission gear; 605. Rack; 606. Limit post; 607. Third transmission gear; 7. Limit component; 701. Roller; 702. Support plate; 703. Compression spring; 704. Guide rod; 8. Clamping component; 801. Clamping disc; 802. Slide post; 803. Extrusion plate; 804. Limit card slot; 805. Limit disc; 806. First guide post; 807. Slide groove; 808. Connecting rod; 809. Second guide post. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] The following further elaborates on this application in conjunction with Figure 1 —7,

[0026] The embodiment of this application discloses an installation structure for a welding torch used in a robotic arm. Refer to Figure 1 , Figure 2 and Figure 3, A mounting structure for a welding torch used in a robotic arm, including a robotic arm and a frame 5; the robotic arm includes a robotic arm 1, a mounting base 2, and a mounting bracket 4. The mounting base 2 and the mounting bracket 4 are respectively movably installed at both ends of the mounting base 2. The lower end of the mounting bracket 4 is fixedly connected to the frame 5. A transmission component 6 is installed in the middle of the frame 5. Both ends of the transmission component 6 are rotatably connected to a clamping component 8. The lower end of the clamping component 8 is fixedly connected to a limiting component 7. The middle of the clamping component 8 is movably connected to a welding torch 3. The welding torch 3 penetrates to the outside of the mounting bracket 4. The welding torch 3 is clamped and fixed by the clamping component 8, and then the welding torch 3 is protected by the limiting component 7 to prevent the welding torch 3 from being collided when the welded part has a convex surface, resulting in the welding torch 3 being unusable. During welding, the robotic arm is combined with automation for control, and the welded part can be automatically welded. These technologies are all existing, so no more details will be given.

[0027] Refer to Figure 3 , Figure 4 , Figure 5 And Figure 7 , The transmission component 6 includes a turntable 601. One side of the turntable 601 close to the frame 5 is fixedly connected to a telescopic rod 602. The telescopic rod 602 is movably connected to the frame 5. One side of the telescopic rod 602 close to the frame 5 is fixedly connected to a third transmission gear 607. Two symmetric first transmission gears 603 are engaged with the third transmission gear 607. On the opposite sides of the two first transmission gears 603, second transmission gears 604 are engaged. On the opposite sides of the two second transmission gears 604, racks 605 are engaged. Both of the two racks 605 are clamped to the clamping component 8. The third transmission gear 607, the second transmission gear 604, and the first transmission gear 603 are all rotatably connected to the frame 5 through a rotating shaft. By manually rotating the turntable 601, the rotation of the turntable 601 drives the telescopic rod 602 to rotate. The telescopic rod 602 is a telescopic rod. Through the internal slider and the limiting groove convex block and the limiting groove, the two sections of the telescopic rod 602 can only slide horizontally and cannot rotate independently. This technology is an existing and commonly used technology, so no more details will be given. The rotation of the telescopic rod 602 drives the third transmission gear 607 to rotate. The rotation of the third transmission gear 607 drives the two first transmission gears 603 to rotate. The rotation of the first transmission gear 603 drives the second transmission gear 604 to rotate. Since the two first transmission gears 603 are respectively installed at the upper and lower ends of the third transmission gear 607, the rotation directions of the two first transmission gears 603 are opposite, which in turn causes the rotation directions of the two second transmission gears 604 to be opposite, driving the two racks 605 to move towards each other, and finally driving the limit disc 805 to rotate.

[0028] Refer to Figure 7, two symmetrical limit posts 606 are fixedly connected to the side of the telescopic rod 602. The limit posts 606 are clamped with the frame 5. When it is necessary to rotate the turntable 601, first pull the turntable 601 outward, driving a section of the telescopic rod 602 to move outward, so that the limit posts 606 are disengaged from the frame 5. After the rotation is completed, push the turntable 601 to drive the telescopic rod 602 to move inward, and then the limit posts 606 are clamped in the grooves of the frame 5 to limit the turntable 601 and prevent the turntable 601 from rotating self.

[0029] Refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 , the clamping assembly 8 includes a clamping disc 801. A limit disc 805 is rotatably sleeved inside the clamping disc 801. A plurality of annularly distributed sliding columns 802 are slidably connected to the middle of the limit disc 805. The upper ends of the plurality of sliding columns 802 are rotatably connected to pressing plates 803. The clamping disc 801 is slidably connected to the pressing plates 803 through limit grooves. A plurality of first guiding columns 806 matching the pressing plates 803 are fixedly connected to the inner side of the clamping disc 801. The pressing plates 803 are slidably sleeved with the first guiding columns 806 through sliding grooves. A connecting rod 808 is fixedly connected to one side of the limit disc 805. A second guiding column 809 is slidably sleeved on the side of the connecting rod 808 away from the clamping disc 801. The second guiding column 809 is fixedly connected to the rack 605. The lower clamping disc 801 is fixedly connected to the limit assembly 7. The limit disc 805 is driven to rotate by the pushing of the rack 605, driving the limit disc 805 to rotate inside the clamping disc 801. Through the limit card slots 804 opened on the limit disc 805, a plurality of pressing plates 803 are pushed to move towards the center of the clamping disc 801. When the pressing plates 803 move, the movement of the pressing plates 803 is guided through the first guiding columns 806 and the limit grooves of the clamping disc 801, and then the welding torch 3 is clamped. Since the upper and lower clamping assemblies 8 both clamp the welding torch 3 and are symmetrically distributed, and the racks 605 move in the same direction, the upper and lower clamping assemblies 8 cannot clamp the welding torch 3 at the same time. The upper and lower clamping assemblies 8 can just clamp and release the welding torch 3 simultaneously through two racks 605 moving towards each other. The sliding groove of the connecting rod 808 is provided to prevent the rack 605 from being unable to push the connecting rod 808. The height of the sliding groove of the rack 605 is greater than the height of the connecting rod 808 for matching with the limit assembly 7;

[0030] Refer to Figure 5 and Figure 6 , the clamping disc 801 is provided with a sliding groove 807. The clamping disc 801 is slidably sleeved with the connecting rod 808 through the sliding groove 807. The limit disc 805 is provided with a plurality of limit card slots 804 matching the pressing plates 803;

[0031] Reference Figure 2 、 Figure 3 and Figure 5 The limiting component 7 includes a roller 701. The roller 701 is fixedly connected to a support plate 702 through a rotating shaft. The upper end of the support plate 702 is fixedly connected to a clamping plate 801. The support plate 702 is slidably sleeved on the frame 5. A plurality of guide rods 704 are slidably sleeved on the upper end of the support plate 702. The plurality of guide rods 704 are fixedly connected to the frame 5. Compression springs 703 are arranged between the plurality of guide rods 704 and the frame 5. When welding encounters a protruding position, the welding torch 3 may come into direct contact with the welded part. To avoid damaging the welding torch 3, when encountering a protrusion, the roller 701 will come into contact with the protrusion first. At this time, the roller 701 is driven to move upward, and then the support plate 702 is driven to slide along the guide rod 704 into the frame 5, squeezing the compression spring 703. The support plate 702 drives the two clamping plates 801 to move upward, and the limit plate 805 moves upward along the groove of the rack 605, without affecting the clamping of the welding torch 3 by the pressing plate 803 of the clamping component 8. The clamping component 8 located at the upper end is slidably connected to the frame 5 through a convex block. During installation, due to the principle of gravity, the upper clamping component 8 is located below the chute, so it does not affect the normal use of the upper clamping component 8. When encountering a protrusion, it does not affect the upward movement and reset of the upper clamping component 8 either;

[0032] Working principle: By manually rotating the turntable 601, the rotation of the turntable 601 drives the rotation of the telescopic rod 602. The rotation of the telescopic rod 602 drives the rotation of the third transmission gear 607. The rotation of the third transmission gear 607 drives the rotation of the two first transmission gears 603. The rotation of the first transmission gear 603 drives the rotation of the second transmission gear 604, and finally drives the rotation of the limit plate 805, driving the limit plate 805 to rotate inside the clamping plate 801. Through the limit card slots 804 opened on the limit plate 805, a plurality of pressing plates 803 are pushed towards the center of the clamping plate 801. When the pressing plates 803 move, the upper and lower clamping components 8 can just clamp and release the welding torch 3 simultaneously through the two racks 605 moving towards each other. When welding encounters a protruding position, the welding torch 3 may come into direct contact with the welded part. To avoid damaging the welding torch 3;

[0033] When encountering a protrusion, the roller 701 will first come into contact with the protrusion. At this time, the roller 701 is driven to move upward, and then the support plate 702 is driven to slide along the guide rod 704 into the interior of the frame 5, squeezing the compression spring 703. The support plate 702 drives the two clamping disks 801 to move upward, and the limit disk 805 moves upward along the groove of the rack 605, without affecting the clamping of the welding torch 3 by the pressing plate 803 of the clamping assembly 8. The clamping assembly 8 located at the upper end is slidably connected to the frame 5 through a convex block. When the welding torch 3 is driven by the upward movement of the lower clamping disk 801, the welding torch 3 drives the upper clamping assembly 8 to slide upward along the frame 5 and finally completes the reset.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A mounting structure for a welding gun for a robot arm, characterized in that: The invention comprises a mechanical arm and a frame (5); the mechanical arm comprises a mechanical arm (1), a mounting base (2) and a mounting frame (4); the mounting base (2) and the mounting frame (4) are respectively movably mounted at two ends of the mounting base (2); the lower end of the mounting frame (4) is fixedly connected to the frame (5); a transmission assembly (6) is mounted in the middle of the frame (5); both ends of the transmission assembly (6) are rotatably connected to a clamping assembly (8); the lower end of the clamping assembly (8) is fixedly connected to a limiting assembly (7); the middle of the clamping assembly (8) is movably connected to a welding gun (3); and the welding gun (3) penetrates to the outer side of the mounting frame (4).

2. The installation structure of a welding gun for a robot arm according to claim 1, characterized in that: The transmission assembly (6) comprises a rotating disk (601), a telescopic rod (602) is fixedly connected to a side of the rotating disk (601) close to the frame (5), the telescopic rod (602) is movably connected to the frame (5), a third transmission gear (607) is fixedly connected to a side of the telescopic rod (602) close to the frame (5), the third transmission gear (607) is meshed with two symmetrical first transmission gears (603), the opposite sides of the two first transmission gears (603) are meshed with second transmission gears (604), the opposite sides of the two second transmission gears (604) are meshed with racks (605), the two racks (605) are clamped with the clamping assembly (8), and the third transmission gear (607), the second transmission gear (604) and the first transmission gear (603) are all rotatably connected to the frame (5) via a rotating shaft.

3. The installation structure of a welding gun for a robot arm according to claim 2, characterized in that: Two symmetrical limiting posts (606) are fixedly connected to the side of the telescopic rod (602), and the limiting posts (606) are clamped with the frame (5).

4. The installation structure of a welding gun for a robot arm according to claim 2, characterized in that: The clamping assembly (8) comprises a clamping plate (801), the inner part of the clamping plate (801) is rotatably sleeved with a limit plate (805), the middle part of the limit plate (805) is slidably connected with a plurality of annularly distributed sliding posts (802), the upper ends of the plurality of sliding posts (802) are rotatably connected with an extrusion plate (803), the clamping plate (801) is slidably connected with the extrusion plate (803) via a limit groove, the inner side of the clamping plate (801) is fixedly connected with a plurality of sliding posts (802) which are connected with the extrusion plate (803) 3) a matching first guide column (806), the extrusion plate (803) is slidably connected to the first guide column (806) through a slide groove, a connecting rod (808) is fixedly connected to one side of the limit plate (805), and a second guide column (809) is slidably connected to the side of the connecting rod (808) away from the clamping plate (801), the second guide column (809) is fixedly connected to the rack (605), and the clamping plate (801) located at the lower side is fixedly connected to the limit assembly (7).

5. The installation structure of a welding gun for a robot arm according to claim 4, characterized in that: The clamping plate (801) is provided with a sliding groove (807), and the clamping plate (801) is slidably connected with the connecting rod (808) through the sliding groove (807). The limiting plate (805) is provided with a plurality of limiting slots (804) matched with the extrusion plate (803).

6. The installation structure of a welding gun for a robot arm according to claim 5, characterized in that: The limiting assembly (7) comprises a roller (701), the roller (701) is fixedly connected to a support plate (702) via a rotating shaft, the upper end of the support plate (702) is fixedly connected to a clamping plate (801), the support plate (702) is slidably sleeved with a frame (5), the upper end of the support plate (702) is slidably sleeved with a plurality of guide rods (704), the plurality of guide rods (704) are fixedly connected to the frame (5), and compression springs (703) are provided between the plurality of guide rods (704) and the frame (5).

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