On-line digital detection and feedback automatic correction device and method for out of roundness of PE pipe

Abstract

The invention provides an on-line digital detection and feedback automatic correction device and method for the out of roundness of a PE pipe. The on-line digital detection and feedback automatic correction device comprises a servo correction part arranged at the front end of a cooling section of the PE pipe and a laser detection part arranged at the rear end of the cooling section of the PE pipe;the laser detection part comprises a first servo motor; an output shaft of the first servo motor is connected with a first driving gear; the first driving gear is engaged with a toothed outer ring ofa first slewing bearing; a laser sensor is arranged on the toothed outer ring of the first slewing bearing; an output shaft of a second servo motor is connected with a second driving gear; the seconddriving gear is engaged with a toothed outer ring of a second slewing bearing; a correcting mechanism assembly comprises a third servo motor and sliding blocks positioned on two sides of the third servo motor; the third servo motor and the sliding blocks are mounted on the toothed outer ring of the second slewing bearing; a roller frame is fixedly mounted on a sliding rail, and is connected witha screw rod through a nut; the screw rod is connected with an output shaft of the third servo motor; and a tapered roller is mounted on the roller frame. The on-line digital detection and feedback automatic correction device and method can detect the out of roundness of a finished PE plastic pipe in a real-time manner, can perform on-line correction and adjustment on the out of roundness of the PEpipe, and enables the error of the out of roundness of the PE pipe to be corrected to the allowable range.

Description

technical field [0001] The invention relates to the technical field of on-line detection of out-of-roundness in the production process of PE pipes, in particular to an on-line digital detection and feedback automatic correction device and method for out-of-roundness of PE pipes. Background technique [0002] In the existing PE pipe manufacturing process, when it comes to the out-of-roundness detection of the finished PE pipe, it is generally manually measured with a tape measure or caliper to measure the maximum deformation diameter and angle of the cut at the cutting station at the end of the PE pipe production line, and then the front end In the cooling section process, manually adjust the angle / diagonal distance of the mechanical diagonal clamp wheel to correct the deformation, and repeat the measurement and adjustment process. If the out-of-roundness of the finished plastic pipe of the PE pipe meets the specified error range, the adjustment is over; if it still does not ...

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Problems solved by technology

[0003] 1) The error of manual measurement of the diameter of the PE pipe mouth is large, and it cannot be accurate to the entire circumference of the PE pipe. Often only the maximum diameter and angle can be found, and the adjustment is roughly adjusted

[0004] 2) Since the mechanical chuck is manually adjusted by experience, there is also the disadvantage of insufficient adjustment accuracy; and manual timing sampling and timing adjustment are not real-time adjustments. If the PE tube is out of round during a certain period of time, it cannot be timely and accurate. If the discovery and disposal are not timely, a certain batch of products will be unqualified

[0005] 3) The manual measurement of the error data of the PE nozzle cannot be used as the index data of the abnormality of the front-end equipment and parameters in time. In the follow-up monitoring of the out-of-roundness of the PE pipe, it is impossible to establish a corresponding relationship between the abnormality of the equipment, the abnormality of the mold and the parameters of the raw material formula. Make real-time adjustments during the manufacturing process

It can be seen that it is actually through the forward or reverse rotation of the small nut to control the rise or fall of the control device, semi-automatic operation, and the accuracy is not high; it is also impossible to detect the out-of-roundness of the finished plastic pipe of the PE pipe in real time; The roundness is corrected and adjusted online

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