A high-speed roller bed control system and control method for conveying trolleys

Abstract

The invention discloses a high-speed roller machine control system used for transporting a trolley and a control method thereof. The control system is composed of a roller machine mechanical part, a programmable controller, a frequency converter, a motor, a position sensor, a speed reducer, a code reader and a coded scale. According to the control method, data detected by the position sensor of the motor acts as a data source through the frequency converter to perform closed loop control on the operation position of the trolley on the roller machine so that the target operation position of the trolley is continuously adjusted according to the current position of the trolley on the roller machine. Closed loop control is performed on the transporting position of the trolley on the roller machine so that high-efficiency and accurate transporting of the trolley can be realized.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing, is applicable to the automatic welding process of automobile body-in-white, and in particular relates to a high-speed roller bed control system and a control method for conveying trolleys. Background technique [0002] In the automatic production line of automobile body-in-white welding, trolleys are widely used to load workpieces, and roller beds are used for trolley transmission. In order to ensure the positioning accuracy of the trolley in the forward direction, it is usually realized by lifting the trolley. However, the lifting of the trolley increases the working time of the trolley transportation and reduces the working efficiency of the automatic production line. [0003] In the high-speed rolling bed technical scheme of the prior art, "High-speed rolling bed for automobile production line" (CN204384233U) does not realize accurate control of the position of the conveying d...

AI Technical Summary

Problems solved by technology

However, the lifting of the trolley increases the working time of the trolley transportation and reduces the working efficiency of the automatic production line

[0003] In the high-speed roller bed technical scheme of the prior art, "High-speed roller bed for automobile production line" (CN204384233U), does not realize the precise control of the position of the conveying direction of the trolley; "A control system for high-speed roller bed conveying materials And its conveying method " (CN103662733A) adopts the photoelectric sensor to detect the position signal to carry out the position control of the roller bed, only controls the position in place, does not realize the closed-loop control in the process of running, the conveying speed is low, and the position accuracy is low

[0004] The roller bed conveys the trolley. The roller bed drives the trolley in a friction-driven way. The rollers and the trolley slide relative to each other. Even if a rotary position sensor is installed on the driving roller or the motor, it is impossible to accurately position the trolley. control

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