Rotary joint of industrial robot

Abstract

The utility model discloses a rotational joint of an industrial robot, which relates to the technical field of industrial robots and comprises a base and an oil injection component. The interior of the base is rotationally connected with a rotating shaft, a worm gear is fixed to the upper end of the rotating shaft, a connecting disc is fixed to the upper end of the worm gear, a rotating assembly is installed at the rear end of the interior of the base, and an extrusion assembly is installed at the upper end of the base; the oil injection assembly comprises a storage groove, a connecting groove, a clamping column, a spring and an extrusion head, the storage groove is formed in the upper end of the connecting disc, the connecting groove is formed in the right end of the circumferential surface of the connecting disc, the connecting groove is located below the storage groove and communicates with the storage groove, and the clamping column is slidably connected into the connecting groove; and a spring is fixed to the front end of the clamping column, the spring is fixed into the connecting groove, an extrusion head is fixed to the rear end of the clamping column, and lubrication can be carried out under the non-stop condition.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial robots, in particular to a rotary joint of an industrial robot. Background Art

[0002] Industrial robots are widely used in the industrial field. They are also intelligent devices that can perform many anthropomorphic tasks. Industrial robots are composed of multiple components, including hands, wrists, and arms. These parts are connected by rotating joints.

[0003] The rotating joints of existing industrial robots need to be lubricated during long-term use. The existing method is mostly to manually stop the machine for application, which is inefficient and not uniform enough. To this end, we propose a rotating joint for an industrial robot. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a rotary joint of an industrial robot which can be lubricated without stopping the machine, thereby effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary joint of an industrial robot, comprising a base and an oil injection assembly;

[0006] Base: A rotating shaft is rotatably connected inside, a worm gear is fixed to the upper end of the rotating shaft, a connecting plate is fixed to the upper end of the worm gear, a rotating assembly is installed at the rear end inside the base, and an extrusion assembly is installed at the upper end of the base;

[0007] The oil injection assembly comprises a storage groove, a connecting groove, a clamping column, a spring and an extrusion head. The upper end of the connecting disk is provided with a storage groove, the right end of the circumferential surface of the connecting disk is provided with a connecting groove, the connecting groove is located below the storage groove, the connecting groove is communicated with the storage groove, the interior of the connecting groove is slidably connected with a clamping column, the front end of the clamping column is fixed with a spring, the spring is fixed inside the connecting groove, the rear end of the clamping column is fixed with an extrusion head, and the lubricating oil is injected into the interior of the guide groove by setting the oil injection assembly.

[0008] Furthermore, the extrusion assembly includes an electric telescopic rod, a connecting frame, an extrusion plate and a guide groove. Two corresponding electric telescopic rods are installed on the upper end of the base. A connecting frame is fixed on the telescopic arm of the electric telescopic rod. An extrusion plate is fixed between the two connecting frames. The extrusion plate is fitted with the rear end of the extrusion head. A guide groove is provided on the front side of the extrusion plate. The input end of the electric telescopic rod is electrically connected to the output end of an external control switch group, and the extrusion head is extruded by setting the extrusion plate.

[0009] Furthermore, the rotating assembly includes a fixed plate, a worm and a motor, two corresponding fixed plates are fixed at the rear end inside the base, a worm is rotatably connected between the two fixed plates, the worm is meshed with the worm wheel, the meshing of the guide groove and the worm and the worm wheel corresponds to each other, a motor is installed on the right side of the right fixed plate, the output shaft of the motor is fixed at the right end of the worm, the input end of the motor is electrically connected to the output end of the external control switch group, and the worm wheel is driven to rotate by setting the rotating assembly.

[0010] Furthermore, an oil filling hole is opened at the upper end of the connecting plate, and the oil filling hole is communicated with the storage tank. A sealing plug is threadedly connected to the upper end of the oil filling hole, and the lubricating oil enters the storage tank through the oil filling hole.

[0011] Furthermore, a sealing plate is fixed to the upper end of the connecting plate, a connecting flange is fixed to the upper side of the sealing plate, and the connecting flange is provided to connect to the mechanical arm of the industrial robot.

[0012] Furthermore, a groove is provided on the lower side of the base, a bearing is fixed inside the groove, and the lower end of the rotating shaft is rotatably connected to the inside of the bearing, thereby improving the stability of the rotating shaft rotation by providing the bearing.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the rotary joint of the industrial robot has the following advantages:

[0014] When the worm drives the worm wheel to rotate, the lubricating oil in the storage tank will flow downward along the gap between the extrusion head and the connecting groove to the inside of the guide groove, and then flow through the guide groove to the gap between the worm wheel and the worm. In this way, the rotating worm wheel and worm can be lubricated without stopping the machine, which is extremely convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0016] Figure 2 It is a front side sectional view of the utility model;

[0017] Figure 3 This is an enlarged view of point A of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the storage tank of the utility model.

[0019] In the figure: 1 base, 2 rotating shaft, 3 worm gear, 4 connecting plate, 5 oil filling assembly, 51 storage tank, 52 connecting tank, 53 clamping column, 54 spring, 55 extrusion head, 6 extrusion assembly, 61 electric telescopic rod, 62 connecting frame, 63 extrusion plate, 64 guide groove, 7 rotating assembly, 71 fixed plate, 72 worm, 73 motor, 8 oil filling hole, 9 sealing plug, 10 sealing plate, 11 connecting flange, 12 bearing. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 ,This embodiment provides a technical solution: a rotary joint of an industrial robot, comprising a base 1 and an oil injection assembly 5;

[0022] Base 1: The internal rotation is connected with a rotating shaft 2, a worm gear 3 is fixed to the upper end of the rotating shaft 2, a connecting plate 4 is fixed to the upper end of the worm gear 3, a rotating assembly 7 is installed at the rear end of the base 1, an extrusion assembly 6 is installed at the upper end of the base 1, and the extrusion assembly 6 includes an electric telescopic rod 61, a connecting frame 62, an extrusion plate 63 and a guide groove 64. Two corresponding electric telescopic rods 61 are installed at the upper end of the base 1, and a connecting frame 62 is fixed on the telescopic arm of the electric telescopic rod 61. An extrusion plate 63 is fixed between the two connecting frames 62, and the extrusion plate 63 is fitted with the rear end of the extrusion head 55. A guide groove 64 is opened on the front side of the extrusion plate 63. The input of the electric telescopic rod 61 The end is electrically connected to the output end of the external control switch group, the rotating assembly 7 includes a fixed plate 71, a worm 72 and a motor 73, two corresponding fixed plates 71 are fixed at the rear end inside the base 1, a worm 72 is rotatably connected between the two fixed plates 71, the worm 72 is meshed with the worm wheel 3, the guide groove 64 and the meshing of the worm 72 and the worm wheel 3 correspond to each other, a motor 73 is installed on the right side of the fixed plate 71 on the right side, the output shaft of the motor 73 is fixed to the right end of the worm 72, the input end of the motor 73 is electrically connected to the output end of the external control switch group, the worm wheel 3 is driven to rotate by setting the rotating assembly 7, and the extrusion head 55 is extruded by setting the extrusion plate 63;

[0023] The oil filling assembly 5 comprises a storage groove 51, a connecting groove 52, a clamping column 53, a spring 54 and an extrusion head 55. The storage groove 51 is provided at the upper end of the connecting disk 4, and a connecting groove 52 is provided at the right end of the circumferential surface of the connecting disk 4. The connecting groove 52 is located below the storage groove 51, and the connecting groove 52 is communicated with the storage groove 51. The interior of the connecting groove 52 is slidably connected with a clamping column 53, and a spring 54 is fixed to the front end of the clamping column 53. The spring 54 is fixed to the interior of the connecting groove 52, and an extrusion head 55 is fixed to the rear end of the clamping column 53. The lubricating oil is injected into the interior of the guide groove 64 by setting the oil filling assembly 5.

[0024] The upper end of the connecting plate 4 is provided with an oil filling hole 8 , which is communicated with the storage tank 51 . The upper end of the oil filling hole 8 is threadedly connected with a sealing plug 9 , and the lubricating oil enters the storage tank 51 through the oil filling hole 8 .

[0025] Wherein: a sealing plate 10 is fixed to the upper end of the connecting plate 4, a connecting flange 11 is fixed to the upper side of the sealing plate 10, and the connecting flange 11 is provided to connect with the mechanical arm of the industrial robot.

[0026] Wherein: a groove is opened at the lower side of the base 1, a bearing 12 is fixed inside the groove, and the lower end of the rotating shaft 2 is rotatably connected inside the bearing 12. The bearing 12 is provided to improve the rotation stability of the rotating shaft 2.

[0027] The working principle of the rotary joint of an industrial robot provided by the utility model is as follows: first, two electric telescopic rods 61 can be started to make two connecting frames 62 move upward, and the two connecting frames 62 drive the extrusion plate 63 to move upward. When the extrusion plate 63 is separated from the extrusion head 55 upward, the clamping column 53 will move backward under the action of the spring 54 to seal the connecting groove 52. After sealing, the sealing plug 9 is removed to inject lubricating oil into the interior of the storage tank 51 through the oil injection hole 8. After injection, the mechanical arm of the industrial robot is connected to the connecting flange 11. After connection, the motor 73 is started to rotate the worm 72. The rotation of the worm 72 drives the worm wheel 3 to rotate. The rotation of the worm wheel 3 drives the connecting plate 4 to rotate. The rotation drives the mechanical arm of the industrial robot connected to the connecting flange 11 to rotate. When lubrication is needed during the operation of the industrial robot, the two electric telescopic rods 61 can be controlled to contract so that the extrusion plate 63 moves downward to squeeze the extrusion head 55 so that it completely enters the interior of the connecting groove 52. At this time, the lubricating oil in the storage groove 51 will flow downward into the interior of the connecting groove 52. The lubricating oil entering the interior of the connecting groove 52 will flow along the gap between the extrusion head 55 and the connecting groove 51 to the interior of the guide groove 64, and then flow through the guide groove 64 to the gap between the worm wheel 3 and the worm 72. In this case, the worm wheel 3 and the worm 72 can be lubricated without stopping the machine.

[0028] It is worth noting that the external control switch group disclosed in the above embodiment is provided with buttons corresponding to the electric telescopic rod 61 and the motor 73. The motor 73 can be a 1LE0003 three-phase asynchronous motor; the electric telescopic rod 61 can be a TGC-A high-thrust electric telescopic rod.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rotary joint of an industrial robot, characterized in that: It comprises a base (1) and an oil injection assembly (5); The base (1) is internally rotatably connected with a rotating shaft (2), a worm gear (3) is fixed to the upper end of the rotating shaft (2), a connecting plate (4) is fixed to the upper end of the worm gear (3), a rotating assembly (7) is installed at the rear end of the base (1), and an extrusion assembly (6) is installed at the upper end of the base (1); The oil injection assembly (5) comprises a storage groove (51), a connecting groove (52), a clamping column (53), a spring (54) and an extrusion head (55). The upper end of the connecting disk (4) is provided with a storage groove (51). The right end of the circumferential surface of the connecting disk (4) is provided with a connecting groove (52). The connecting groove (52) is located below the storage groove (51). The connecting groove (52) is communicated with the storage groove (51). The interior of the connecting groove (52) is slidably connected with a clamping column (53). The front end of the clamping column (53) is fixed with a spring (54). The spring (54) is fixed inside the connecting groove (52). The rear end of the clamping column (53) is fixed with an extrusion head (55).

2. The rotary joint of an industrial robot according to claim 1, characterized in that: The extrusion assembly (6) comprises an electric telescopic rod (61), a connecting frame (62), an extrusion plate (63) and a guide groove (64); two corresponding electric telescopic rods (61) are installed on the upper end of the base (1); a connecting frame (62) is fixed on the telescopic arm of the electric telescopic rod (61); an extrusion plate (63) is fixed between the two connecting frames (62); the extrusion plate (63) is fitted with the rear end of the extrusion head (55); a guide groove (64) is provided on the front side of the extrusion plate (63); and the input end of the electric telescopic rod (61) is electrically connected to the output end of an external control switch group.

3. The rotary joint of an industrial robot according to claim 2, characterized in that: The rotating assembly (7) comprises a fixed plate (71), a worm (72) and a motor (73). Two corresponding fixed plates (71) are fixed at the rear end of the base (1). A worm (72) is rotatably connected between the two fixed plates (71). The worm (72) is meshed with the worm wheel (3). The meshing of the guide groove (64) and the worm (72) and the worm wheel (3) corresponds to each other. A motor (73) is installed on the right side of the fixed plate (71) on the right side. The output shaft of the motor (73) is fixed to the right end of the worm (72). The input end of the motor (73) is electrically connected to the output end of an external control switch group.

4. The rotary joint of an industrial robot according to claim 1, characterized in that: An oil filling hole (8) is provided at the upper end of the connecting plate (4), the oil filling hole (8) is communicated with the storage tank (51), and a sealing plug (9) is threadedly connected to the upper end of the oil filling hole (8).

5. The rotary joint of an industrial robot according to claim 1, characterized in that: A sealing plate (10) is fixed to the upper end of the connecting plate (4), and a connecting flange (11) is fixed to the upper side of the sealing plate (10).

6. The rotary joint of an industrial robot according to claim 1, characterized in that: A groove is provided on the lower side of the base (1), a bearing (12) is fixed inside the groove, and the lower end of the rotating shaft (2) is rotatably connected inside the bearing (12).

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