Cantilever rotating joint of robot

Abstract

The cantilever rotating joint of the robot comprises a mounting plate and a rotating cantilever rotationally arranged on the outer side of the mounting plate, the other side of the mounting plate is fixedly connected with a rotating motor, and the power end of the rotating motor movably penetrates through the mounting plate and then is fixedly connected with a driving fluted disc. The outer side of the rotating cantilever is fixedly sleeved with a driven fluted disc connected to the driving fluted disc in a meshed mode, the outer side of the rotating cantilever is further fixedly sleeved with a connecting sleeve, a sleeve rod is movably arranged on the outer side of the connecting sleeve, the other end of the sleeve rod is movably connected with a sliding block, and an annular sliding groove is further formed in the outer side of the mounting plate with the rotating cantilever as the circle center. The sliding blocks are arranged in the sliding grooves in a limiting and sliding mode. The angle of the rotating cantilever is finely adjusted relatively accurately by adopting a rotating structure that the small teeth drive the large teeth, and the connecting sleeve is arranged on the outer side of the rotating cantilever and is connected into the annular sliding groove in the outer side of the mounting plate in cooperation with the sleeve rod, so that the supporting and using strength of the rotating cantilever under the condition of high-load operation is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of robot accessories, in particular to a cantilever rotary joint of a robot. Background Art

[0002] Welding robots are industrial robots that perform welding. According to the definition of the International Organization for Standardization, industrial robots belong to standard welding robots. Industrial robots are multi-purpose, reprogrammable automatic control manipulators with three or more programmable axes, used in the field of industrial automation. In order to adapt to different uses, the mechanical interface of the last axis of the robot is usually a connecting flange that can be connected to different tools or end effectors. The welding robot is an industrial robot with a welding tongs or welding (cutting) gun installed on the end axis flange, so that it can perform welding, cutting or thermal spraying.

[0003] When using a welding robot, a rotating cantilever is used to facilitate multi-angle adjustment. However, the overall rotation adjustment accuracy of the existing cantilever is low, which makes it difficult to meet the diversified use requirements of the company's equipment. In addition, high-load operation occurs during use, and the strength of the cantilever structure needs to be studied. Utility Model Content

[0004] The utility model solves the technical problems raised in the background technology by designing a cantilever rotary joint of a robot, and proposes the following technical solutions:

[0005] A cantilever rotary joint of a robot comprises a mounting plate and a rotary cantilever rotatably arranged on the outer side of the mounting plate, the rotary cantilever being rotatably connected to the outer side of the mounting plate through a bearing member, a rotary motor being fixedly connected to the other side of the mounting plate, and a power end of the rotary motor being fixedly connected to a driving gear disc after movably passing through the mounting plate, a fixed sleeve on the outer side of the rotary cantilever being provided with a driven gear disc meshingly connected to the driving gear disc, a connecting sleeve being fixedly arranged on the outer side of the rotary cantilever, a sleeve rod being movably arranged on the outer side of the connecting sleeve, and a slider being movably connected to the other end of the sleeve rod, an annular slide groove being also arranged on the outer side of the mounting plate with the rotary cantilever as the center, and the slider being limitedly slidably arranged inside the slide groove.

[0006] Preferably, the diameter of the driving gear disc is smaller than the diameter of the driven gear disc.

[0007] Preferably, the sleeve rod is rotatably connected to the connecting sleeve and the sliding block via a rotating pin.

[0008] Preferably, the contact surface between the slider and the slide groove is designed as a smooth surface structure.

[0009] Preferably, an outer wall of the sliding block is provided with an arc-shaped embedding groove, and a ball is movably embedded in the embedding groove.

[0010] Preferably, the inner wall of the slide groove is provided with a groove, and the groove is in rolling contact with the ball.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model is different from the traditional motor direct drive method and adopts gear transmission to realize the rotation and adjustment angle of the rotating cantilever, and on this basis adopts the "small tooth belt large tooth" rotation structure to realize relatively precise fine-tuning of the angle of the rotating cantilever, thereby meeting the diversified use requirements of the company's equipment; at the same time, a connecting sleeve is provided on the outside of the rotating cantilever and is connected to the annular slide groove on the outside of the mounting plate with a sleeve rod, and the slider at the outer end of the sleeve rod rotates in the slide groove with the rotating cantilever and plays an auxiliary support and reinforcement effect, which effectively ensures the supporting strength of the rotating cantilever under high load operation, has a significant improvement in practical effect, and is worthy of promotion and use in the existing market. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a side view schematic diagram of the installation structure of the slider of the utility model;

[0015] Figure 3 It is a cross-sectional schematic diagram of the installation structure of the slider of the utility model.

[0016] In the figure: 1-mounting plate, 2-rotating cantilever, 3-bearing member, 4-rotating motor, 5-driving gear disc, 6-driven gear disc, 7-connecting sleeve, 8-sleeve rod, 9-slider, 901-embedded groove, 902-ball, 10-slide groove, 1001-groove. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0019] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Manual Attached Figure 1-3 A cantilever rotary joint of a robot comprises a mounting plate 1 and a rotary cantilever 2 rotatably arranged on the outer side of the mounting plate 1, the rotary cantilever 2 is rotatably connected to the outer side of the mounting plate 1 through a bearing member 3, a rotary motor 4 is fixedly connected to the other side of the mounting plate 1, and a driving gear disc 5 is fixedly connected to the power end of the rotary motor 4 after movably passing through the mounting plate 1, a driven gear disc 6 meshingly connected to the driving gear disc 5 is provided on the outer side of the rotary cantilever 2, and the diameter of the driving gear disc 5 is smaller than the diameter of the driven gear disc 6, a connecting sleeve 7 is also fixedly provided on the outer side of the rotary cantilever 2, a sleeve rod 8 is movably arranged on the outer side of the connecting sleeve 7, and a slider 9 is movably connected to the other end of the sleeve rod 8, the sleeve rod 8 is rotatably connected to the connecting sleeve 7 and the slider 9 through a rotating pin, and an annular slide groove 10 is also provided on the outer side of the mounting plate 1 with the rotary cantilever 2 as the center.

[0022] Based on this, when the utility model is in use, the staff can start the rotating motor 4 through the external switch. The rotating motor 4 is a servo motor and can also adjust the appropriate speed. The rotating motor 4 drives the active gear plate 5 at the power end and meshes with the driven gear 6 on the outside of the rotating cantilever 2 to rotate synchronously, thereby driving the rotating cantilever 2 to rotate. Since the diameter of the active gear plate 5 is smaller than the diameter of the driven gear plate 6, the angle of the rotating cantilever 2 can be relatively accurately fine-tuned to meet the diversified use requirements of the company's equipment. At the same time, during the rotation of the rotating cantilever 2 through the bearing member 3, the sleeve rod 8 connected to the outer connecting sleeve 7 cooperates with the slider 9 in the slide groove 10 for auxiliary support, which can provide a relatively stable support effect during the high-load rotation of the rotating cantilever 2.

[0023] Among them, the slider 9 is limitedly slidably arranged inside the slide groove 10, the contact surface between the slider 9 and the slide groove 10 is a smooth surface structure design, the outer wall of the slider 9 is provided with an arc-shaped embedding groove 901, and the ball 902 is movably embedded inside the embedding groove 901, and the inner wall of the slide groove 10 is provided with a groove 1001, and the groove 1001 and the ball 902 are in rolling contact. The rolling contact between the ball 902 and the groove 1001 on the inner wall of the slide groove 10 can reduce the overall connection friction, and the smooth surface design of the contact surface between the slider 9 and the slide groove 10 can effectively reduce the friction of the slider 9 sliding in the slide groove 10. In addition, due to the sliding of the protruding ball and the concave groove 1001 on the inner wall of the slide groove 10, the sliding connection between the slider 9 and the slide groove 10 is transformed into a limited sliding connection, which prevents the slider 9 from detaching from the slide groove 10 and plays a role in stabilizing the connection. In addition, it should be noted that the diameter of the ball 902 is larger than the diameter of the slot of the embedding slot 901 to prevent the ball 902 from falling out.

[0024] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

Claims

1. A cantilever rotary joint of a robot, comprising a mounting plate (1) and a rotary cantilever (2) rotatably arranged outside the mounting plate (1), characterized in that: The rotating cantilever (2) is rotatably connected to the outer side of the mounting plate (1) through a bearing member (3); a rotating motor (4) is fixedly connected to the other side of the mounting plate (1); and a power end of the rotating motor (4) is movably passed through the mounting plate (1) and is fixedly connected to a driving gear disc (5); a fixed sleeve on the outer side of the rotating cantilever (2) is provided with a driven gear disc (6) meshingly connected to the driving gear disc (5); a connecting sleeve (7) is also fixedly provided on the outer side of the rotating cantilever (2); a sleeve rod (8) is movably provided on the outer side of the connecting sleeve (7); and a slider (9) is movably connected to the other end of the sleeve rod (8); and an annular slide groove (10) is also provided on the outer side of the mounting plate (1) with the rotating cantilever (2) as the center of the circle, and the slider (9) is limitedly slidably provided inside the slide groove (10).

2. The cantilever rotary joint of a robot according to claim 1, characterized in that: The diameter of the driving gear disc (5) is smaller than the diameter of the driven gear disc (6).

3. The cantilever rotary joint of a robot according to claim 2, characterized in that: The sleeve rod (8) is rotatably connected to the connecting sleeve (7) and the sliding block (9) via a rotating pin.

4. The cantilever rotary joint of a robot according to claim 3, characterized in that: The contact surface between the slider (9) and the slide groove (10) is designed as a smooth surface structure.

5. The cantilever rotary joint of a robot according to claim 4, characterized in that: The outer wall of the sliding block (9) is provided with an arc-shaped embedding groove (901), and a ball (902) is movably embedded in the embedding groove (901).

6. The cantilever rotary joint of a robot according to claim 5, characterized in that: The inner wall of the slide groove (10) is provided with a groove (1001), and the groove (1001) is in rolling contact with the ball (902).

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