Calibrator for die head of extruding machine

Abstract

The invention discloses a calibrator for a die head of an extruding machine, which is convenient for calibrating the die head. The calibrator comprises a core die connecting part, wherein at least two unfolding and positioning structures are uniformly distributed along the circumferential direction of the core die connecting part; one ends of the unfolding and positioning structures are movably connected with control structures to form connection ends, and the other ends of the unfolding and positioning structures form positioning ends; and when the control structures drive the connection ends of the unfolding and positioning structures, respective positioning ends are separated from each other, and unfold at the same angle by taking the axis line of the core die connecting part as a reference line. The unfolded positioning ends can be used for accurately and quickly determining whether gaps between a mouth die and the core die are uniform; and if the gaps are nonuniform, the position of the core die can be correspondingly adjusted through a gap adjusting screw on the mouth die to realize uniform gaps.

Description

technical field [0001] The invention relates to a calibrator for calibrating the die head of an extruder. Background technique [0002] With the development of society, the application of plastic products is more and more extensive, and plastic pipes have replaced traditional cement pipes and steel pipes due to their excellent performance. The commonly used equipment for the production of plastic pipes is an extruder. When producing pipes, it is necessary to calibrate the die head of the extruder (including the die and the core die inside the die), that is, by adjusting the position of the mandrel so that the core The gap between the die and the die is uniform, because the plastic in the fluid state is extruded through the gap to form the final pipe, so only by making the gap between the core die and the die uniform, the wall thickness of the pipe produced in this way Otherwise, there will be uneven wall thickness of the pipe, which will affect the normal use of the pipe. ...

AI Technical Summary

Problems solved by technology

The commonly used equipment for the production of plastic pipes is an extruder. When producing pipes, it is necessary to calibrate the die head of the extruder (including the die and the core die inside the die), that is, by adjusting the position of the mandrel so that the core The gap between the die and the die is uniform, because the plastic in the fluid state is extruded through the gap to form the final pipe, so only by making the gap between the core die and the die uniform, the wall thickness of the pipe produced in this way It is only uniform, otherwise, there will be uneven wall thickness of the pipe, which will affect the normal use of the pipe

The traditional calibration method is to adjust the mandrel by manual experience, that is, the relative position of the mandrel and the die is estimated by experienced workers, and then the position of the mandrel is adjusted by the gap adjustment screw on the die. Make adjustments to achieve a uniform gap between the mandrel and the die. The disadvantages of this calibration method are: the manual estimation of the gap has a large deviation, it is difficult to determine the exact adjustment direction of the mandrel, and the uniformity of the pipe wall thickness Difficult to guarantee

In addition, there are currently some ways to calibrate the die head through precision instruments. Although this method can calibrate the die head, due to the high cost of precision instruments, it requires professional operation, and the operation is complicated and maintenance is inconvenient. Calibration time is long

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