An electric adjustment device for die head gap of blow molding machine

Abstract

The invention discloses an electric adjustment device for the die head gap of a blow molding machine, which relates to the technical field of blow molding machines. The invention comprises a fixed seat and a drive motor, the inner surface of the fixed seat is slidably connected with a connecting seat, one surface of the fixed seat is fixedly connected with a fixed bracket, one surface of the fixed bracket is slidably connected with a guide rod, and a connecting piece is fixedly connected to the side surface of the guide rod. One surface of the piece is rotatably connected with a telescopic rod, one surface of the fixed bracket is fixedly connected with a fixed rod, one end of the fixed rod is rotatably connected with the telescopic rod, one end of the telescopic rod is fixedly connected with a rotating rod, one side of the fixed seat is fixedly connected with an L-shaped bracket, and the L-shaped One end of the support is fixedly connected with an arc-shaped resistor. The invention uses the connection structure between the arc-shaped resistor and the rotating rod, so that the variable speed motor can adjust the forward and reverse speed according to the gap between the die heads in time, and cooperate with the driving motor to control the extrusion speed of the screw. The screw has the advantage of self-adaptive extrusion speed.

Description

technical field [0001] The invention relates to the technical field of blow molding machines, in particular to an electric adjustment device for die head clearance of a blow molding machine. Background technique [0002] After the liquid plastic is sprayed out, the plastic body is blown and attached to a mold cavity of a certain shape by using the wind blown out by the machine to make a product. This kind of machine is called a blow molding machine. The plastic is melted and extruded quantitatively in the screw extruder, and then shaped through the mouth film, and then cooled by the wind ring, and then pulled by a tractor at a certain speed, and wound into a roll by a winding machine. [0003] When the existing die gap electric adjustment device changes, the extrusion speed of the screw cannot be changed in time, resulting in unstable laminar flow of the plastic in the die gap, affecting the color quality of the extruded product, making The yield rate of production is reduc...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides an electric adjustment device for the die head gap of a blow molding machine, which controls the positive and negative rotation and rotation speed of the variable speed motor through the arc-shaped resistor plate, and solves the problem that the existing screw cannot adapt itself according to the die head gap. shifting problem

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