CN211388856U

CN211388856U - Industrial robot wrist

Info

Publication number: CN211388856U
Application number: CN201922365880.3U
Authority: CN
Inventors: 滕满高
Original assignee: 滕满高
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-01
Anticipated expiration: 2029-12-25

Abstract

The utility model provides an industrial robot wrist, including the robot forearm, PLC controller and swivelling chute, there is the PLC controller robot forearm top through bolt fixed mounting, there is the swivelling chute robot forearm left side through bolt fixed mounting, there is servo motor inside the robot forearm through bolt fixed mounting, there is the oil tank above the swivelling chute right side through bolt fixed mounting, the oil tank top is connected with sealed lid through the screw rotation, the inside left and right sides of swivelling chute all rotates through the pivot and is connected with the rotation wheel, two rotate and are provided with the axis of rotation between the wheel, it rotates to be provided with the bearing between axis of rotation and the swivelling chute and is connected, the inside top opening of bearing is provided with the weeping hole, there is the connecting pipe through bolt fixed mounting between weeping hole and the oil tank. The bearing outer wall of the industrial robot wrist cannot be corroded and rusted, and on the other hand, the bearing is smoother during rotation, the service life of the bearing is prolonged, and the industrial robot wrist has the function of circulating and lubricating balls.

Description

Industrial robot wrist

Technical Field

The utility model relates to an industrial robot technical field specifically is an industrial robot wrist.

Background

The prior industrial robot wrists are usually lubricated in batches, so that the lubrication effect is influenced due to incomplete lubrication caused by dust contamination in balls, once a transmission part is damaged, the maintenance difficulty is high, at present, in order to reduce the friction of a bearing in the rotating process, a brush is often adopted to directly smear lubricating oil on the bearing, the mode not only consumes manpower, but also causes the problems of uneven smearing of the lubricating oil and poor lubrication effect; and current industrial robot generally directly uses motor drive bevel gear driven transmission scheme, and bevel gear exposes externally, leads to dust and particulate matter in the room air to be fallen into bevel gear and glue on equipment easily, influences the stability of robot wrist operation, noise, vibration easily appear, seriously influence the life's of robot problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the shortcomings existing in the background technology and provide an industrial robot wrist.

In order to achieve the purpose, the utility model provides the following technical scheme, an industrial robot wrist comprises a robot forearm, a PLC controller and a rotary groove, wherein the PLC controller is fixedly arranged at the top end of the robot forearm through a bolt, the rotary groove is fixedly arranged at the left side of the robot forearm through a bolt, a servo motor is fixedly arranged in the robot forearm through a bolt, an oil tank is fixedly arranged above the right side of the rotary groove through a bolt, a sealing cover is rotatably connected above the oil tank through a thread, rotating wheels are rotatably connected at the left side and the right side of the inner part of the rotary groove through rotating shafts, a rotating shaft is arranged between the two rotating wheels, a bearing is rotatably connected between the rotating shaft and the rotary groove, a liquid leakage hole is arranged at the top end opening of the inner part of the bearing, a connecting pipe is fixedly arranged between the liquid leakage hole and the oil tank, the robot is characterized in that a spring is fixedly arranged at the top end inside the connecting pipe through a bolt, a rubber block is fixedly arranged below the spring, protective covers are fixedly arranged on the left side and the right side of the robot forearm through bolts, and a belt is rotatably connected between the servo motor and the rotating wheel.

Furthermore, the liquid leakage hole is communicated with the oil tank through a connecting pipe, and the section of the liquid leakage hole is concave.

Furthermore, the cross section of the rubber block is convex, and the rubber block is matched with the liquid leakage hole.

Furthermore, in the rotating process of the ball in the bearing, the rubber block in the liquid leakage hole bounces through the spring.

Furthermore, the rotating shaft is rotatably connected in the rotating groove through a belt between the servo motor and the rotating wheel.

Further, the PLC controller is electrically connected with the servo motor, and the PLC controller and the servo motor are both connected with an external power supply.

The utility model provides an industrial robot wrist has following beneficial effect:

1. the utility model has the advantages of, because it rotates to be connected to be provided with the bearing between axis of rotation and the swivelling chute, the ball rotates the in-process in the bearing, the downthehole block rubber of weeping passes through the spring and bounces, because state and switch on through the connecting pipe between weeping hole and the oil tank mutually, the wheel grease in the oil tank carries out lubricated clearance through the connecting pipe on dripping to the ball in the bearing this moment, a lubricity for improving the bearing and rotating the wheel, make the bearing outer wall can not corrode and rust on the one hand, on the other hand makes the bearing more level and smooth when rotating work, improve its life-span, and because the bearing rotates the effect that the in-process has the circulating lubrication ball, the lubrication cost is practiced thrift, make the ball can omnidirectional lubrication simultaneously.

2. Secondly, because the belt is connected with between servo motor and the rotation wheel in the rotation, the axis of rotation is connected through servo motor's drive and the belt rotation between the rotation wheel in the swivelling chute, accomplish turning to of axis of rotation and robot forearm, be provided with the bearing rotation between axis of rotation and the swivelling chute simultaneously and be connected, reduce the vibrations that the device during operation produced, guarantee robot forearm pivoted stability to the robot forearm left and right sides all is used for keeping apart the belt between servo motor and the rotation wheel through bolt fixed mounting's safety cover.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an overall sectional view of the present invention.

Fig. 3 is a schematic top view of the present invention.

Fig. 4 is a schematic partial cross-sectional view of the bearing of the present invention.

Fig. 5 is an enlarged schematic view of a portion a of fig. 4 according to the present invention.

In FIGS. 1-5: the robot comprises a robot small arm-1, a PLC-101, a servo motor-102, a rotary groove-2, an oil tank-201, a sealing cover-202, a rotary wheel-203, a bearing-204, a liquid leakage hole-205, a connecting pipe-206, a spring-207, a rubber block-208, a protective cover-3, a rotary shaft-4 and a belt-5.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b):

referring to figures 1-5 of the drawings,

the industrial robot wrist provided by the embodiment comprises a robot forearm 1, a PLC controller 101 and a rotary groove 2, wherein the PLC controller 101 is fixedly installed at the top end of the robot forearm 1 through a bolt, the rotary groove 2 is fixedly installed at the left side of the robot forearm 1 through a bolt, a servo motor 102 is fixedly installed inside the robot forearm 1 through a bolt, an oil tank 201 is fixedly installed above the right side of the rotary groove 2 through a bolt, a sealing cover 202 is rotatably connected above the oil tank 201 through a thread, rotating wheels 203 are rotatably connected at the left side and the right side inside the rotary groove 2 through rotating shafts, a rotating shaft 4 is arranged between the two rotating wheels 203, a bearing 204 is rotatably connected between the rotating shaft 4 and the rotary groove 2, a liquid leakage hole 205 is formed in an opening at the top end inside the bearing 204, a connecting pipe 206 is fixedly installed between the liquid leakage hole 205 and the oil tank 201 through a bolt, and a spring 207 is fixedly installed, a rubber block 208 is fixedly arranged below the spring 207, protective covers 3 are fixedly arranged on the left side and the right side of the robot forearm 1 through bolts, and a belt 5 is rotatably connected between the servo motor 102 and the rotating wheel 203.

Furthermore, the leakage hole 205 is communicated with the oil tank 201 through a connecting pipe 206, the section of the leakage hole 205 is concave, the bearing 204 is arranged between the rotating shaft 4 and the rotating groove 2 and is rotatably connected, the rubber block 208 in the leakage hole 205 is bounced up through the spring 207 in the rotating process of the ball in the bearing 204, and the leakage hole 205 is communicated with the oil tank 201 through the connecting pipe 206, so that the lubricating oil in the oil tank 201 is dripped onto the ball in the bearing 204 through the connecting pipe 206 to lubricate the gap, on one hand, the outer wall of the bearing 204 cannot be corroded and rusted, and on the other hand, the bearing 204 is smoother in rotating operation.

Furthermore, the section of the rubber block 208 is convex, the rubber block 208 is matched with the liquid leakage hole 205, and when the ball in the bearing 204 rotates, the rubber block 208 in the liquid leakage hole 205 is bounced up through the spring 207, and the wheel lubricating oil flows out from the gap between the rubber block 208 and the liquid leakage hole 205, so that the lubricating property of the bearing and the rotating wheel 203 is improved, and the service life of the bearing and the rotating wheel is prolonged.

Furthermore, in the process of rotating the ball in the bearing 204, the rubber block 208 in the liquid leakage hole 205 bounces through the spring 207, and the bearing 204 has the effect of circularly lubricating the ball in the rotating process, so that the lubricating cost is saved, and meanwhile, the ball can be lubricated in an all-around manner, and the oiling uniformity is improved.

Furthermore, the rotating shaft 4 is rotatably connected in the rotating groove 2 through the belt 5 between the servo motor 102 and the rotating wheel 203, the bearing 204 is arranged between the rotating shaft 4 and the rotating groove 2 to be rotatably connected, vibration generated during the operation of the device is reduced, the rotating stability of the robot forearm 1 is ensured, and the left side and the right side of the robot forearm 1 are both used for isolating the belt 5 between the servo motor 102 and the rotating wheel 203 through the protective covers 3 fixedly installed through bolts.

Further, PLC controller 101 is connected with servo motor 102 electricity, and PLC controller 101 and servo motor 102 all are connected with external power supply, and the user passes through PLC controller 101 and servo motor 102's setting, because it is connected with belt 5 to rotate between servo motor 102 and the turning wheel 203, axis of rotation 4 passes through servo motor 102's drive and the belt 5 rotation connection in the swivelling chute 2 between the turning wheel 203, accomplishes turning to of axis of rotation 4 and robot forearm 1.

Wherein, the signal end of the PLC 101 can be remotely connected with the external signal control end.

The working principle is as follows: firstly, a user opens a sealing cover 202 at regular time to add wheel lubricating oil into an oil tank 201, and in the use process, through the arrangement of a PLC (programmable logic controller) 101 and a servo motor 102, as a belt 5 is rotatably connected between the servo motor 102 and a rotating wheel 203, a rotating shaft 4 is rotatably connected with the belt 5 between the rotating wheel 203 through the driving of the servo motor 102 in a rotating groove 2, the steering of the rotating shaft 4 and a small arm 1 of a robot is completed, and simultaneously, a bearing 204 is arranged between the rotating shaft 4 and the rotating groove 2 for rotatably connecting, so that the vibration generated during the working of the device is reduced, the rotating stability of the small arm 1 of the robot is ensured, and the left side and the right side of the small arm 1 of the robot are fixedly provided with a protective cover 3 through bolts for isolating the belt 5 between the servo motor 102 and the rotating wheel 203, as the bearing 204 is rotatably connected between the rotating shaft 4, the rubber block 208 in the leakage hole 205 is bounced by the spring 207, and as the leakage hole 205 is communicated with the oil tank 201 by the connecting pipe 206, the lubricating oil in the oil tank 201 drips to the ball in the bearing 204 through the connecting pipe 206 to lubricate the gap, so as to improve the lubricating property of the bearing and the rotating wheel 203, on one hand, the outer wall of the bearing 204 cannot be corroded to rust, on the other hand, the bearing 204 is smoother during the rotating operation, and as the bearing 204 has the function of circulating and lubricating the ball in the rotating process, the automatic oiling is realized.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. An industrial robot wrist comprises a robot small arm (1), a PLC (programmable logic controller) (101) and a rotary groove (2), wherein the PLC (101) is fixedly arranged at the top end of the robot small arm (1) through a bolt, the rotary groove (2) is fixedly arranged on the left side of the robot small arm (1) through a bolt, and the industrial robot wrist is characterized in that a servo motor (102) is fixedly arranged in the robot small arm (1) through a bolt, an oil tank (201) is fixedly arranged above the right side of the rotary groove (2) through a bolt, a sealing cover (202) is rotatably connected above the oil tank (201) through threads, rotating wheels (203) are rotatably connected on the left side and the right side of the inner part of the rotary groove (2) through rotating shafts, a rotating shaft (4) is arranged between the two rotating wheels (203), and a bearing (204) is rotatably connected between the rotating shaft (4) and the rotary groove (, bearing (204) inside top end opening is provided with weeping hole (205), there is connecting pipe (206) through bolt fixed mounting between weeping hole (205) and oil tank (201), there is spring (207) on the inside top of connecting pipe (206) through bolt fixed mounting, spring (207) below is fixed and is provided with block rubber (208), there is safety cover (3) all through bolt fixed mounting robot forearm (1) left and right sides, it is connected with belt (5) to rotate between servo motor (102) and rotation wheel (203).

2. An industrial robot wrist according to claim 1, characterized in that the leak hole (205) communicates with the oil tank (201) through a connecting pipe (206), and the leak hole (205) has a concave cross section.

3. An industrial robot wrist according to claim 1, characterized in that the rubber block (208) has a convex cross section, and the rubber block (208) and the weep hole (205) are fitted to each other.

4. An industrial robot wrist according to claim 1, characterized in that during rotation of the balls in the bearings (204), the rubber blocks (208) in the weep holes (205) are sprung by means of springs (207).

5. An industrial robot wrist according to claim 1, characterized in that the turning shaft (4) is rotatably connected in the turning groove (2) by a belt (5) between the servo motor (102) and the turning wheel (203).

6. An industrial robot wrist according to claim 1, characterized in that the PLC controller (101) is electrically connected to the servo motor (102), and both the PLC controller (101) and the servo motor (102) are connected to an external power supply.