Arc welding robot with welding gun head convenient to replace

Abstract

The arc welding robot with the welding gun head convenient to replace comprises an arc welding robot body, a fixing disc, a mounting base, the welding gun head and a stable mounting assembly, the fixing disc is arranged at the welding end of the arc welding robot body, the mounting base is fixedly arranged on the fixing disc, the stable mounting assembly is fixedly arranged on the mounting base, and the welding gun head is fixedly arranged on the mounting base. The welding gun head is connected with the stable installation assembly and then is in threaded connection with the installation base, the welding head is screwed in through the installation base in a threaded mode, installation of the welding head is achieved, the stability of the welding head on the installation base is improved through the stable installation assembly, and looseness of the threaded connection position is reduced. The multiple inserting rods are evenly arranged on the periphery of the welding head, the welding head is connected through the nut after abutting against the spring, the stability of the threaded connection position of the welding head is improved, and by arranging the arc-shaped pieces, the device material is reduced, and meanwhile the good hard light shielding effect and the dust blocking effect are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of arc welding robots, and in particular relates to an arc welding robot which is convenient for replacing a welding gun head. Background Art

[0002] Arc welding robots are industrial robots used for automated arc welding. Their components and operating principles are essentially the same as spot welding robots. Arc welding robots are primarily used in the welding production of various automotive parts. In this field, international arc welding robot manufacturers primarily supply unit products to complete equipment suppliers.

[0003] The existing arc welding robot has a welding gun installed on the moving end of the manipulator for welding work. The welding gun head is often connected and fixed by a flange and bolts. When the welding gun head is damaged, it is disassembled and replaced. During long-term use, the bolts sometimes rust. The arc welding robot in the prior art needs to use two wrenches to turn in opposite directions to replace the welding gun head. The disassembly work is often inconvenient, which reduces the maintenance efficiency, and the rusted bolts make maintenance more difficult.

[0004] Chinese patent application number 202323452163.7 provides an arc welding robot for a roller support welding robot workstation. The patent includes a robot body and a welding gun head mounted on the robot body. One side of the welding gun head is connected to and fixed with a gas pipe. A gun barrel is movably mounted on the gas pipe. A first annular plate is fixedly mounted on the gas pipe. The side wall of the first annular plate is provided with an annular groove with an opening on one side. The gas pipe and the gun barrel are both located within the annular groove. One end of the gun barrel is in movable contact with the inner wall of the annular groove away from the opening. The top and bottom sides of the gun barrel are both provided with inclined surfaces. The top and bottom inner walls of the annular groove are provided with rectangular holes. The patent facilitates the rapid and labor-saving replacement of the gun barrel by facilitating the rapid removal of the gun barrel from the gas pipe. This technical solution mainly realizes the disassembly and replacement of the gun barrel and the gas pipe. In addition, the patent is used directly exposed to air, which easily causes dust contamination of the welding head, affecting the subsequent welding effect. Therefore, it needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide an arc welding robot that is easy to replace the welding gun head. The technical problem to be solved is that when replacing the welding gun head of the arc welding robot, some need to use two wrenches to turn in opposite directions to achieve the replacement of the welding gun head, which is inconvenient to disassemble.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The utility model provides an arc welding robot that is convenient for replacing welding gun heads, comprising an arc welding robot body, a fixed plate, a mounting seat, a welding gun head and a stable mounting assembly, wherein the fixed plate is arranged at the welding end of the arc welding robot body, the mounting seat is fixedly arranged on the fixed plate, the stable mounting assembly is fixedly arranged on the mounting seat, and the welding gun head is threadedly connected to the mounting seat after being connected to the stable mounting assembly.

[0008] The welding head can be installed by screwing in the welding thread through the mounting seat. The stability of the welding head on the mounting seat can be improved by setting a stable mounting component, reducing the risk of loosening or falling off at the threaded connection.

[0009] Optionally, the stable mounting assembly includes a tooth block, a plug-in rod and a spring, the tooth block is arranged on the mounting seat, the plug-in rod is threadedly arranged on the mounting seat and is located at the outer periphery of the tooth block, the spring is sleeved on the plug-in rod, and the welding gun head is threadedly connected to the inside of the tooth block. By arranging the plug-in rod and the spring, and by arranging several plug-in rods evenly arranged at the outer periphery of the welding head, the welding head abuts the spring and is connected through a nut in the prior art, thereby improving the stability of the threaded connection of the welding head.

[0010] Optionally, there are several connecting rods arranged in a circular array to surround and connect the welding gun head at the center, and the spring on the connecting rod abuts against the welding head.

[0011] Optionally, the arc welding robot also includes a dustproof component, one end of which is fixed on a fixed plate, and the other end is retractably arranged on the periphery of the welding gun head. By setting the dustproof component, the impact of dust on the welding gun head due to exposure to the air can be reduced.

[0012] Optionally, the dustproof component includes a bellows, an arc ring and an arc sheet. The bellows is fixed on a fixed plate, the end of the arc ring is fixed to the end of the bellows, and the arc sheets are several arc sheets arranged in a circular array on the outer periphery of the welding gun head. By setting a retractable structure, it is possible to choose whether to use the component according to actual conditions. By setting a bellows, the position of the dustproof component can be adjusted at will. By setting an arc sheet, the material of the device can be reduced while having better strong light shielding effect and dust blocking effect.

[0013] Optionally, the arc welding robot further includes a slide rail and a moving platform. A moving platform for movement is provided at the bottom of the arc welding robot body. The slide rail is fitted on the bottom of the moving platform. The movement of the welding robot is achieved by providing an adapted slide rail and a moving platform.

[0014] Optionally, a rack is provided in the groove opened at the top of the slide rail, a moving wheel is provided at the bottom of the moving platform, and the moving wheel has a slot engaged with the rack. The moving platform drives the moving wheel to move on the rack. By providing a rack and a corresponding slot for engagement on the moving wheel, the friction force is increased and the transmission efficiency is improved through the movement of the moving wheel.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The utility model is convenient for replacing welding. The arc welding robot screws the welding head into the mounting seat to realize the installation of the welding head. The stability of the welding head on the mounting seat is improved by setting a stable mounting component, which will not cause the loosening of the threaded connection.

[0017] 2. The utility model is convenient for replacing welding arc welding robots by setting a number of plug-in rods evenly arranged on the periphery of the welding head. After the welding head abuts the spring, it is connected through a nut in the prior art, thereby improving the stability of the threaded connection of the welding head. The position of the dustproof component can be adjusted at will by setting a bellows. By setting an arc-shaped sheet, the device material can be reduced while having a better strong light shielding effect and dust blocking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a side structural diagram of the utility model;

[0020] Figure 3 This is an enlarged structural diagram of the welding gun head of the present invention;

[0021] Figure 4 This is a schematic diagram of the explosion structure related to the welding gun head of the present utility model.

[0022] In the figure: 1- slide rail, 101- rack, 2- moving platform, 21- moving wheel, 22- slot, 3- base, 4- turntable, 5- upper arm, 6- lower arm, 7- automatic wire feeding mechanism, 8- wire feeding guide tube, 9- fixed plate, 10- mounting seat, 11- welding gun head, 12- stable mounting assembly, 121- tooth block, 122- plug-in rod, 123- spring, 124- nut, 13- dustproof assembly, 131- bellows, 132- arc ring, 133- arc sheet. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention.

[0024] One embodiment, such as Figures 1 to 4 As shown, there is provided an arc welding robot body, a fixed plate 9, a mounting seat 10, a welding gun head 11, a stable mounting component 12 and a dustproof component 13, wherein the fixed plate 9 is preferably set to a disc shape and fixed on the welding end of the arc welding robot body for installation, wherein the mounting seat 10 is fixedly set on the disk surface of the fixed plate 9, and the mounting end of the welding gun head 11 is threaded into the mounting seat 10, wherein the stable mounting component 12 is set on the outer periphery of the mounting seat 10 and connected to the welding head 11, wherein the dustproof component 13 is retractably set on the fixed plate 9, and the nozzle of the welding gun head 11 is surrounded therein.

[0025] During use, the operator chooses whether to put the dustproof component 13 on the nozzle of the welding head 11 to protect the welding gun head 11 from dust and light. When the welding gun head 11 needs to be replaced, the stable mounting component 12 is first removed, and then the welding gun head 11 is disassembled from the mounting base 10 by rotating it.

[0026] refer to Figure 3 and Figure 4 As shown, in this embodiment, the mounting end of the welding gun head 11 includes a threaded column and a mounting ring, wherein the stable mounting assembly 12 includes a gear 121, and in this embodiment, the tooth block 121 is fixedly connected by welding after being plugged into the mounting seat 10, wherein the tooth block 121 is provided with an internal thread, and the threaded column at the end of the welding gun head 11 is meshed with the internal thread inside the tooth block 121. In this embodiment, a plurality of plug-in rods 122 are also fixed on the mounting seat 10. Preferably, in this embodiment, there is a plug-in rod 122 in the tooth groove of each tooth block 121, wherein each plug-in rod 122 is also sleeved with a spring 123, and in this embodiment, a hole adapted to the plug-in rod 122 is provided on the mounting ring at the end of the welding gun head 11.

[0027] During use, when fixing the welding gun head 11, first screw the threaded column part of the welding gun head 11 into the tooth block 121, and then insert the plug-in column 122 into the spring 123 located between the welding gun head 11 and the tooth block 121 through the mounting ring at the end of the welding gun head 11. After the plug-in rod 122 is inserted into the spring 123, it is threaded into the tooth block 121, and then the plug-in rod 122 that is exposed outside the mounting ring at the end of the welding gun head 11 is fixed by the nut 124. In this embodiment, the connection of the welding head 11 is achieved in a spiral manner. By using the plug-in column 122, the spring 123 and the nut 124 in combination, the stability of the connection between the welding gun head 11 and the tooth block 121 is increased.

[0028] It should be noted that the stable installation component 12 in this embodiment is only for improving the stability of the device. When the threaded connection method can meet the installation and fixation method of the welding gun head 11, the operator can choose not to install the stable installation component 12.

[0029] refer to Figure 3 and Figure 4 As shown, the dustproof component 13 in this embodiment includes a bellows 131, an arc ring 132 and an arc sheet 133. In this embodiment, the bellows 131 is preferably a pair and the ends are symmetrically welded on both sides of the fixed plate 9. In this embodiment, the arc ring 132 is preferably set as a semi-circular ring structure. In this embodiment, each end of a pair of bellows 131 is fixed with an arc ring 132. The pair of arc rings 132 in this embodiment are also symmetrically arranged, and the ends of the pair of arc rings 132 are fixed with magnetic blocks in the prior art, wherein the positive and negative magnetic blocks are respectively located at the ends of the pair of arc rings 132. In this embodiment, the arc sheet 133 is a number of equally spaced fixed on each arc ring 132, wherein several arc sheets 133 are preferably sideways at a certain angle. More preferably, the angle between the arc sheet 133 and the line connecting the center of the arc ring 132 is between 30 degrees and 45 degrees.

[0030] During use, when the arc welding robot is performing welding operations, the nozzle cover of the welding gun head 11 is placed in the arc ring 132 by dragging the bellows 131. The array of arc pieces 133 not only blocks strong light but also has a certain dust-proof effect. At the same time, there is a certain gap between the array of arc pieces 133 to facilitate workers to observe the welding progress at any time. After use, the arc ring 132 connected by magnetic attraction is also easy to disassemble.

[0031] refer to Figure 1 and Figure 2 As shown, in this embodiment, the arc welding robot body preferably includes a base 3 in the prior art, wherein the base 3 is rotatably connected to a turntable 4 through an axis, wherein the other end of the turntable 4 is connected to a boom 5, wherein the end of the boom 5 is movably connected to a forearm 6 through a rotating block, and in this embodiment, a fixed plate 9 is fixed to the end of the forearm 6. More preferably, in this embodiment, the turntable 4, the boom 5 and the forearm 6 can be driven by a hydraulic rod in the prior art, and the rotation of the boom 5 and the forearm 6 can also be achieved by using motors in the prior art that are respectively located on the turntable 4 and the rotating block. In this embodiment, the arc welding robot also includes an automatic wire feeding mechanism 7 and a wire feeding tube 8 in the prior art, wherein the wire feeding tube 8 is fixed on the forearm 6 and connected to the automatic wire feeding mechanism 7 located at the end of the forearm 6.

[0032] refer to Figure 1 and Figure 2As shown, the arc welding robot in this embodiment also includes a slide rail 1 and a moving platform 2 for realizing driving, wherein the base 3 is fixed to the top of the moving platform 2 by bolts in the prior art, and the bottom of the moving platform 2 is provided with a moving wheel 21 that can realize driving in the prior art, wherein the bottom of the moving platform 2 is also provided with a slide rail 1 adapted to the moving wheel 21, wherein a groove is provided at the top of the slide rail 1, and a rack 101 is fixed inside the groove, and a card slot 22 is provided on the outer peripheral surface of the moving wheel 21 in this embodiment, wherein the diameter of the card slot 22 is adapted to the gear teeth of the rack 101.

[0033] Working principle: When in use, the arc welding robot moves along the slide rail 1 through the drive of the moving wheel 21. Different motion trajectories can be achieved by changing the direction of the slide rail 1. The rack 101 set inside the slide rail 1 is adapted to the moving wheel 21 to increase the friction of the moving wheel 21. When welding the workpiece, the bellows 131 is pulled so that the arc ring 132 covers the welding gun head 11 inside. The arc pieces 133 set at equal intervals are used to increase the shielding effect of strong light and dust prevention. When the welding gun head 11 needs to be replaced and installed, the threaded column part of the welding gun head 11 is screwed into the tooth block 121, and then the plug-in column 122 is inserted into the spring 123 located between the welding gun head 11 and the tooth block 121 through the mounting ring at the end of the welding gun head 11. After the plug-in rod 122 is inserted into the spring 123, it is threaded into the tooth block 121, and then the plug-in rod 122 that is exposed outside the mounting ring at the end of the welding gun head 11 is fixed with a nut 124 to increase the stability of the arc welding robot.

[0034] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. An arc welding robot that facilitates replacement of welding gun heads, characterized by: The invention comprises an arc welding robot body, a fixing plate (9), a mounting seat (10), a welding gun head (11) and a stable mounting assembly (12), wherein the fixing plate (9) is arranged at the welding end of the arc welding robot body, the mounting seat (10) is fixedly arranged on the fixing plate (9), the stable mounting assembly (12) is fixedly arranged on the mounting seat (10), and the welding gun head (11) is connected to the stable mounting assembly (12) and then threadedly connected to the mounting seat (10).

2. The arc welding robot for facilitating replacement of welding gun heads according to claim 1, characterized in that: The stable mounting assembly (12) comprises a tooth block (121), a plug rod (122) and a spring (123); the tooth block (121) is arranged on the mounting seat (10); the plug rod (122) is threadedly arranged on the mounting seat (10) and is located on the outer periphery of the tooth block (121); the spring (123) is sleeved on the plug rod (122); and the welding gun head (11) is threadedly connected to the inside of the tooth block (121).

3. The arc welding robot for facilitating replacement of welding gun heads according to claim 2, characterized in that: The connecting rods (122) are multiple and arranged in a circular array to surround and connect the welding gun head (11) at the center, and the springs (123) on the connecting rods (122) abut against the welding gun head (11).

4. The arc welding robot for facilitating replacement of welding gun heads according to claim 1 or 3, characterized in that: The arc welding robot further comprises a dustproof component (13), one end of the dustproof component (13) is fixed on the fixed plate (9), and the other end is telescopically arranged on the periphery of the welding gun head (11).

5. The arc welding robot for facilitating replacement of welding gun heads according to claim 4, characterized in that: The dustproof assembly (13) comprises a bellows (131), an arc ring (132) and an arc sheet (133); the bellows (131) is fixedly arranged on a fixed disk (9); the end of the arc ring (132) is fixed to the end of the bellows (131); and the arc sheet (133) is a plurality of arc sheets (133) arranged in a circular array on the outer periphery of the welding gun head (11).

6. The arc welding robot with convenient welding gun head replacement according to claim 1, characterized in that: The arc welding robot further comprises a slide rail (1) and a moving platform (2); the moving platform (2) for movement is provided at the bottom of the arc welding robot body, and the slide rail (1) is fitted on the bottom of the moving platform (2).

7. The arc welding robot with convenient welding gun head replacement according to claim 6, characterized in that: A rack (101) is provided in a groove formed on the top of the slide rail (1), a moving wheel (21) is provided on the bottom of the moving platform (2), and a slot (22) is formed on the moving wheel (21) for engaging with the rack (101). The moving platform (2) drives the moving wheel (21) to move on the rack (101).

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