A smart welding robot

Abstract

This invention relates to the field of welding robots and discloses an intelligent welding robot, including a frame, a lifting platform, and a servo motor. A drive shaft, a first driven cylinder, and a second driven cylinder are rotatably connected to the lifting platform. The drive shaft is connected to the output end of the servo motor. Both the first and second driven cylinders are linked to the drive shaft. A support is provided on the lifting platform, and a movable seat is slidably mounted on the support. The movable seat is equipped with welding equipment. This invention has the following advantages and effects: By moving the lifting platform vertically, long-distance vertical adjustment of the welding equipment is achieved; by moving the movable seat horizontally, horizontal adjustment of the welding equipment is achieved. Through the servo motor, the first connecting device, and the second connecting device, the positions of the lifting platform and the movable seat can be adjusted separately using the servo motor, reducing manufacturing costs and improving product manufacturing efficiency.

Description

Technical Field

[0001] This invention relates to the field of welding robot technology, and in particular to an intelligent welding robot. Background Technology

[0002] Welding robots are industrial robots used for welding. According to the International Organization for Standardization's definition of a standard welding robot, an industrial robot is a multi-purpose, reprogrammable, automatically controlled manipulator with three or more programmable axes, used in industrial automation. When welding robots are applied to non-standard customized applications, the dimensional differences of non-standard parts are significant, especially when dealing with tall non-standard equipment. This necessitates a larger working range of motion for the welding robot, which conventional welding robots often cannot meet. Summary of the Invention

[0003] The purpose of this invention is to provide an intelligent welding robot with a long stroke, a wide working range, and adaptability to welding operations on non-standard equipment of different specifications.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an intelligent welding robot, comprising a frame, a lifting seat slidably disposed on the frame in a vertical direction, and a servo motor mounted on the lifting seat. A drive shaft, a driven cylinder one, and a driven cylinder two are rotatably connected to the lifting seat. The drive shaft is connected to the output end of the servo motor. Both driven cylinder one and driven cylinder two are linked to the drive shaft. A bracket is provided on the lifting seat, and a movable seat is slidably disposed on the bracket. Welding equipment is mounted on the movable seat. A lead screw is rotatably connected to the lifting seat. A nut assembly is installed on the moving seat, and the nut assembly is installed on the lead screw. A first coupling device is provided between the lead screw and the driven cylinder. A rotating shaft is rotatably connected to the lifting seat. A second coupling device is provided between the rotating shaft and the driven cylinder. A worm is installed on the rotating shaft. An output shaft is also installed on the lifting seat. A worm wheel is installed on the output shaft. The worm is connected to the worm wheel. An output gear is installed on the output shaft. A rack is provided on the frame. The output gear meshes with the rack.

[0005] By adopting the above technical solution, this invention achieves long-distance horizontal adjustment of the welding equipment by mounting and fixing the welding equipment on a movable base and moving the nut assembly and movable base horizontally through the rotation of the lead screw. The lifting of the lifting base and the long-distance vertical adjustment of the welding equipment are achieved through the cooperation of the output gear and rack.

[0006] The applicant should point out that in existing technologies, especially in the field of industrial robots, there are indeed cases where gears and racks, or lead screws, are used to adjust linear motion. However, in the field of non-standard equipment manufacturing, directly manufacturing welding robots with long-distance adjustment and high degrees of freedom would be too costly and impractical. Long-distance adjustment with a single function, such as horizontal or vertical linear adjustment, has a simple structure, low technical threshold, and is very easy to manufacture, leading to fierce market competition and highly price-sensitive customers.

[0007] This invention innovatively employs a single servo motor for simultaneous long-distance horizontal and vertical adjustments, reducing manufacturing costs. Simultaneously, the welding equipment utilizes a high-degree-of-freedom welding system, enabling precise welding of non-standard equipment. The ingenious structural design and low manufacturing cost enhance the product's market competitiveness.

[0008] A further configuration of the present invention is as follows: the end side of the lead screw near the lifting seat is a smooth curved surface, the end of the lead screw passes through the driven cylinder, the connecting device includes a first thrust ball bearing sleeved on the end of the lead screw near the lifting seat, a friction ring installed on the inner ring side of the first thrust ball bearing, and a driving member for driving the outer ring of the thrust ball bearing to move closer to or away from the driven cylinder. The end side of the lead screw is provided with an axially oriented sliding groove, and the friction ring is provided with a slider embedded in the sliding groove.

[0009] By adopting the above technical solution, the driving component drives the thrust ball bearing to approach the driven cylinder, so that the friction ring abuts against the driven cylinder. The rotation of the driven cylinder drives the friction ring to rotate, and the friction ring drives the lead screw to rotate through the slider and the groove, thus realizing the engagement between the lead screw and the driven cylinder.

[0010] The driving component drives the thrust ball bearing away from the driven cylinder, causing the friction ring to disengage from the driven cylinder, thus separating the lead screw from the driven cylinder.

[0011] A further configuration of the present invention is as follows: the rotating shaft passes through the driven cylinder 2, the connecting device 2 is a second thrust ball bearing sleeved on the rotating shaft, a friction ring 2 installed in the inner ring of the second thrust ball bearing, and a driving member 2 that drives the second thrust ball bearing to approach or move away from the driven cylinder 2. A sliding groove 2 along the axial direction is provided on the side of the end of the rotating shaft, and a slider 2 embedded in the sliding groove 2 is provided on the friction ring 2.

[0012] By adopting the above technical solution, the driving component 2 drives the thrust ball bearing 1 to approach the driven cylinder 2, so that the friction ring 2 abuts against the driven cylinder 2, causing the driven cylinder to drive the friction ring 2 to rotate. The friction ring 2 drives the rotating shaft to rotate through the slider 2 and the groove 2, thus realizing the connection between the rotating shaft and the driven cylinder 2.

[0013] The second driving component drives the second thrust ball bearing away from the second driven cylinder, causing the second friction ring to disengage from the second driven cylinder, thus achieving the separation of the rotating shaft from the second driven cylinder.

[0014] A further configuration of the present invention is that the first driving component and the second driving component are two electric push rods.

[0015] By adopting the above technical solution, it is possible to achieve separate control of the lead screw and driven cylinder one, and the rotating shaft and driven cylinder two.

[0016] A further configuration of the present invention is as follows: the first driving component and the second driving component are the same electric push rod, the output end of the electric push rod is fixed with a connecting frame, and the outer rings of the first thrust ball bearing and the second thrust ball bearing are both connected and fixed to the connecting frame.

[0017] By adopting the above technical solution, drive component one and drive component two are two electric push rods, which saves manufacturing costs.

[0018] A further feature of the present invention is that a friction plate is provided at the end of the driven cylinder.

[0019] By adopting the above technical solution, friction plate one and friction ring one are tightly fitted together, and a large frictional force is generated between them.

[0020] A further feature of the present invention is that a friction plate is fixed to the end face of the driven cylinder.

[0021] By adopting the above technical solution, the second friction plate and the second friction ring are tightly fitted together, and a large frictional force is generated between them.

[0022] A further configuration of the present invention is as follows: the drive shaft is fixedly mounted with a drive gear one and a drive gear two; the driven cylinder one is mounted with a driven gear one; the driven gear one meshes with the drive gear one; and the driven gear two meshes with the drive gear two.

[0023] By adopting the above technical solution, the linkage between driven cylinder one, driven cylinder two and the drive shaft is realized.

[0024] A further feature of the present invention is that a support column is fixed on the lifting seat, and the upper end of the support column is fixed on the bracket.

[0025] By adopting the above technical solution, the support column supports the bracket, thereby enhancing the structural stability.

[0026] The beneficial effects of this invention are: This invention achieves long-distance vertical adjustment of the welding equipment by moving the lifting seat vertically, and achieves horizontal adjustment of the welding equipment by moving the moving seat horizontally. By incorporating a servo motor, three connecting devices (one and two), the positions of the lifting seat and the moving seat can be adjusted separately using the servo motor, reducing manufacturing costs and improving product manufacturing efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural schematic diagram of Example 1. Figure 1 .

[0029] Figure 2 This is a structural schematic diagram of Example 1. Figure 2 .

[0030] Figure 3 This is a schematic diagram of the internal structure of the lifting seat in Embodiment 1.

[0031] Figure 4 This is a schematic diagram showing the positional relationship between the servo motor, drive shaft, driven cylinder one, driven cylinder two, lead screw, rotating shaft, and output shaft in Embodiment 1.

[0032] Figure 5 This is a schematic diagram of the first connecting device in Embodiment 1.

[0033] Figure 6 A schematic diagram of the structure of the second connecting device in Embodiment 1.

[0034] Figure 7 This is a schematic diagram of the connection frame position in Embodiment 2.

[0035] In the diagram, 1. Frame; 11. Support column; 12. Rack; 2. Lifting seat; 21. Rotating shaft; 211. Worm gear; 212. Slide groove 2; 22. Output shaft; 221. Worm wheel; 222. Output gear; 3. Servo motor; 4. Drive shaft; 41. Drive gear 1; 42. Drive gear 2; 5. Driven cylinder 1; 51. Friction plate 1; 52. Driven gear 1; 6. Driven cylinder 2; 61. Friction plate 2; 62. Driven gear 2; 7. Bracket; 71. Lead screw; 711. Slide groove 1; 72. Moving seat; 73. Welding equipment; 8. Connecting device 1; 81. First thrust ball bearing; 82. Friction ring 1; 821. Slider 1; 83. Drive component 1; 9. Connecting device 2; 91. Second thrust ball bearing; 92. Friction ring 2; 921. Slider 2; 93. Drive component 2; 10. Connecting frame. Detailed Implementation

[0036] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] Example 1: An intelligent welding robot, such as Figures 1 to 6 As shown, the device includes a frame 1, a lifting seat 2 slidably mounted vertically on the frame 1, and a servo motor 3 mounted on the lifting seat 2. A drive shaft 4, a driven cylinder 5, and a driven cylinder 6 are rotatably connected to the lifting seat 2. The drive shaft 4 is connected to the output end of the servo motor 3. Driven cylinders 5 and 6 are both linked to the drive shaft 4. A bracket 7 is provided on the lifting seat 2, and a movable seat 72 is slidably mounted on the bracket 7. A welding device 73 is mounted on the movable seat 72. A lead screw 71 is rotatably connected to the bracket 7, and a nut assembly is mounted on the movable seat 72. The mother assembly is mounted on the lead screw 71. A coupling device 8 is provided between the lead screw 71 and the driven cylinder 5. A rotating shaft 21 is rotatably connected to the lifting seat 2. A coupling device 9 is provided between the rotating shaft 21 and the driven cylinder 6. A worm gear 211 is mounted on the rotating shaft 21. An output shaft 22 is also mounted on the lifting seat 2. A worm wheel 221 is mounted on the output shaft 22. The worm gear 211 is connected to the worm wheel 221. An output gear 222 is mounted on the output shaft 22. A rack 12 is provided on the frame 1. The output gear 222 meshes with the rack 12.

[0038] Furthermore, the end side of the lead screw 71 near the lifting seat 2 is a smooth curved surface. The end of the lead screw 71 passes through the driven cylinder 5. The connecting device 8 includes a first thrust ball bearing 81 sleeved on the end of the lead screw 71 near the lifting seat 2, a friction ring 82 installed on the inner ring side of the first thrust ball bearing 81, and a driving member 83 that drives the outer ring of the thrust ball bearing to move closer to or away from the driven cylinder 5. The end side of the lead screw 71 is provided with an axially oriented sliding groove 711, and the friction ring 82 is provided with a slider 821 embedded in the sliding groove 711.

[0039] Furthermore, the rotating shaft 21 passes through the driven cylinder 6, and the connecting device 9 consists of a second thrust ball bearing 91 sleeved on the rotating shaft 21, a friction ring 92 installed on the inner ring of the second thrust ball bearing 91, and a driving member 93 that drives the second thrust ball bearing 91 to move closer to or away from the driven cylinder 6. An axially oriented sliding groove 212 is provided on the side of the end of the rotating shaft 21, and the friction ring 92 is provided with a slider 921 embedded in the sliding groove 212.

[0040] Furthermore, the first driving component 83 and the second driving component 93 are two electric push rods.

[0041] Furthermore, a friction plate 51 is provided at the end of the driven cylinder 5.

[0042] Furthermore, a friction plate 61 is fixed to the end face of the driven cylinder 6.

[0043] Furthermore, the drive shaft 4 is fixedly equipped with a drive gear 41 and a drive gear 42, the driven cylinder 5 is equipped with a driven gear 52, the driven gear 52 meshes with the drive gear 41, and the driven gear 62 meshes with the drive gear 42.

[0044] Furthermore, a support column 11 is fixed on the lifting seat 2, and the upper end of the support column is fixed on the bracket 7.

[0045] Example 2: An intelligent welding robot, which differs from Example 1 in that, as Figure 7 As shown, the first driving component 83 and the second driving component 93 are the same electric push rod. The output end of the electric push rod is fixed with a connecting frame 10. The outer rings of the first thrust ball bearing 81 and the second thrust ball bearing 91 are both connected and fixed to the connecting frame 10.

Claims

1. An intelligent welding robot, characterized in that: The system includes a frame (1), a lifting seat (2) slidably mounted on the frame (1) in a vertical direction, and a servo motor (3) mounted on the lifting seat (2). A drive shaft (4), a driven cylinder one (5), and a driven cylinder two (6) are rotatably connected to the lifting seat (2). The drive shaft (4) is connected to the output end of the servo motor (3). The driven cylinder one (5) and the driven cylinder two (6) are both linked to the drive shaft (4). A bracket (7) is provided on the lifting seat (2), and a movable seat (72) is slidably mounted on the bracket (7). A welding device (73) is mounted on the movable seat (72). A lead screw (71) is rotatably connected to the bracket (7), and a nut assembly is mounted on the movable seat (72). The lead screw (71) is mounted on the lead screw (71), and a coupling device (8) is provided between the lead screw (71) and the driven cylinder (5). A rotating shaft (21) is rotatably connected to the lifting seat (2), and a coupling device (9) is provided between the rotating shaft (21) and the driven cylinder (6). A worm (211) is mounted on the rotating shaft (21), and an output shaft (22) is also mounted on the lifting seat (2). A worm wheel (221) is mounted on the output shaft (22), and the worm (211) is connected to the worm wheel (221). An output gear (222) is mounted on the output shaft (22), and a rack (12) is provided on the frame (1). The output gear (222) meshes with the rack (12). The end side of the screw (71) near the lifting seat (2) is a smooth curved surface. The end of the screw (71) passes through the driven cylinder (5). The connecting device (8) includes a first thrust ball bearing (81) sleeved on the end of the screw (71) near the lifting seat (2), a friction ring (82) installed on the inner ring side of the first thrust ball bearing (81), and a driving member (83) that drives the outer ring of the first thrust ball bearing (81) to move closer to or away from the driven cylinder (5). The end side of the screw (71) is provided with an axial groove (711). The friction ring (82) is provided with a slider (821) embedded in the groove (711). The rotating shaft (21) passes through the driven cylinder (6). The second connecting device (9) consists of a second thrust ball bearing (91) sleeved on the rotating shaft (21), a friction ring (92) installed on the inner ring of the second thrust ball bearing (91), and a driving member (93) that drives the second thrust ball bearing (91) to approach or move away from the driven cylinder (6). The rotating shaft (21) passes through the driven cylinder (6). The second connecting device (9) consists of a second thrust ball bearing (91) sleeved on the rotating shaft (21), a friction ring (92) installed on the inner ring of the second thrust ball bearing (91), and a driving member (93) that drives the second thrust ball bearing (91) to approach or move away from the driven cylinder (6). A sliding groove (212) along the axial direction is provided on the side of the end of the rotating shaft (21).The friction ring two (92) is provided with a slider two (921) embedded in the sliding groove two (212).

2. The intelligent welding robot according to claim 1, characterized in that: The first driving component (83) and the second driving component (93) are two electric push rods.

3. The intelligent welding robot according to claim 1, characterized in that: The first driving component (83) and the second driving component (93) are the same electric push rod. The output end of the electric push rod is fixed with a connecting frame (10). The outer ring of the first thrust ball bearing (81) and the outer ring of the second thrust ball bearing (91) are both connected and fixed to the connecting frame (10).

4. The intelligent welding robot according to claim 1, characterized in that: The end of the driven cylinder (5) is provided with a friction plate (51).

5. The intelligent welding robot according to claim 1, characterized in that: Friction plate 2 (61) is fixed to the end face of the driven cylinder 2 (6).

6. The intelligent welding robot according to claim 1, characterized in that: The drive shaft (4) is fixed with drive gear one (41) and drive gear two (42), and driven cylinder one (5) is fixed with driven gear one (52). Driven gear one (52) meshes with drive gear one (41); driven gear two (62) meshes with drive gear two (42).

7. The intelligent welding robot according to claim 1, characterized in that: A support column (11) is fixed on the lifting seat (2), and the upper end of the support column (11) is fixed on the bracket (7).

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