Five-freedom-degree spraying robot

Abstract

The invention provides a five-freedom-degree spraying robot. The five-freedom-degree spraying robot comprises a base, a lifting arm, a large arm, a small arm, a wrist part and an output shaft, wherein the lifting arm is capable of lifting up and down and horizontally moving relative to the base; a rotation axis of the large arm relative to the lifting arm, a rotation axis of the small arm relative to the large arm and a rotation axis of the wrist part relative to the small arm are same and are same and are parallel to an horizontal movement axis of the lifting arm relative to the base; a rotation axis of the output shaft relative to the wrist part and a rotation axis of the wrist part relative to the small arm are perpendicular to each other and are crossed with each other; a small arm motor, a wrist part motor and an output shaft motor are arranged at the front end of the large arm and are transmitted to the small arm, the wrist part and the output shaft via a one-stage or multi-stage synchronous belt; five motors are isolated in three sealed spaces; each sealed space adopts dynamic and static sealing strategy to ensure that electric gas is isolated with the outside flammable and explosive gases; high explosion resistance is achieved; mounting and driving manners of joint speed reducers are also optimized by the five-freedom-degree spraying robot; the five-freedom-degree spraying robot has the characteristics of simple structure, low cost, large operation space, high flexibility, high tail end positioning accuracy, convenience in wire layout, reliability in sealing and high explosion resistance.

Description

technical field [0001] The invention relates to the technical field of painting robots, in particular to a five-degree-of-freedom painting robot. Background technique [0002] With the continuous development of robot technology, more and more robots are used in various industries. As a kind of industrial robot, the spraying robot must have the performance of explosion-proof sealing in addition to the characteristics of general industrial robots due to its harsh use environment. However, there are very few existing spraying robots that comprehensively consider factors such as movement space, load, precision, sealing, explosion-proof, and cost. [0003] After searching the literature of the prior art, it is found that Chinese patent CN105798887A provides a six-degree-of-freedom spraying robot, which can provide a larger working space, but because the motor load of the robot's big arm and small arm needs to bear the self-weight of the rear structure Torque, so the effective l...

AI Technical Summary

Problems solved by technology

However, there are very few existing spraying robots that comprehensively consider factors such as movement space, load, precision, sealing, explosion-proof, and cost.

[0003] After searching the literature of the prior art, it is found that Chinese patent CN105798887A provides a six-degree-of-freedom spraying robot, which can provide a larger working space, but because the motor load of the robot's big arm and small arm needs to bear the self-weight of the rear structure Torque, so the effective load at the end is limited, otherwise, a higher power motor is required to increase the cost to achieve a larger effective load at the end

[0004] However, general industrial robots, such as a five-degree-of-freedom robot provided by Chinese patent CN104690722A, do not have special requirements such as explosion-proof sealing if they are used in a spraying environment.

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