Clearance adjusting device and method of mouth mold and core mold

Abstract

The invention relates to the technical field of PE pipe production, in particular to a clearance adjusting device and method of a mouth mold and a core mold. The device comprises a mouth mold adjusting fixed seat, the mouth mold, a mouth mold press plate and adjusting screws. One side of the mouth mold adjusting fixed seat is fixedly connected to an extruder head body, and the other side of the mouth mold adjusting fixed seat is detachably connected with the circular mouth mold press plate. The mouth mold is connected in the circular mouth mold press plate in a sleeved manner. The mouth mold adjusting fixed seat is evenly provided with multiple screw through holes in the circumferential direction, the number of the screw through holes is an even number, and the adjusting screws are in threaded connection in the screw through holes. Each adjusting screw is connected and driven by a stepping motor through a reducer. The stepping motors are connected with an online ultrasonic measurementsystem. The online ultrasonic measurement system comprises a scanning box, a DSP and a human-computer interface which are connected in sequence. According to the clearance adjusting device and method,the clearance of the mouth mold and the core mold can be automatically adjusted online, the adjusting efficiency is high, the manual cost is saved, and pipe waste is reduced.

Description

technical field [0001] The invention relates to the technical field of PE pipe production, in particular to a device and method for adjusting the gap between a die and a core die. Background technique [0002] In the process of producing PE pipes, in order to obtain PE pipes with uniform wall thickness, the centers of the mandrel and die are required to be on the same straight line and the gap between the die and mandrel should be adjusted uniformly and consistently. However, during the production process, the gap between the die and the mandrel will shift, resulting in uneven wall thicknesses of the upper and lower pipes. Therefore, the pipe manufacturer usually manually adjusts the bolts of the die platen on-line after manually measuring the thickness of the pipe. The gap between the die and core mold. In addition, when producing PE pipes of different specifications, the replacement of the die and core mold is inevitable. At this time, it is also necessary to adjust the ga...

AI Technical Summary

Problems solved by technology

However, during the production process, the gap between the die and the mandrel will shift, resulting in uneven wall thicknesses of the upper and lower pipes. Therefore, the pipe manufacturer usually manually adjusts the bolts of the die platen on-line after manually measuring the thickness of the pipe. The gap between the die and core mold. In addition, when producing PE pipes of different specifications, the replacement of the die and core mold is inevitable. At this time, it is also necessary to adjust the gap between the die and core mold first. Manual adjustment requires the technical level of the adjustment personnel. High, low adjustment efficiency, high labor cost, and a lot of waste of pipes will be caused during the adjustment process

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