Film blowing printing device of degradable plastic packaging bag

Abstract

The invention provides a degradable plastic packaging bag film blowing printing device, which comprises a blow molding machine, the tail end of the blow molding machine is connected with a die head fixed on a support frame, the four sides of the die head are connected with film blowing air pipes, and the film blowing printing device is characterized in that the outer side of the die head is provided with the support frame vertically fixed on a mounting bottom frame; annular frames are distributed on the supporting frame in the vertical direction at equal intervals, multiple sections of hinged guide rollers installed on a guide roller adjusting mechanism are distributed on the annular frames in the circumferential direction, and the guide roller adjusting mechanism comprises a diameter adjusting mechanism and a point position adjusting mechanism. The distance between the guide roller and the center of the die column can be adjusted to be matched with the diameter change of the die column, the number of contact point positions of the guide roller and the die column can be adjusted through the point position adjusting mechanism, the guide effect is improved, reduction of the guide effect per unit area caused by increase of the area of the die column is prevented, and good development prospects are achieved.

Description

technical field [0001] The invention relates to the field of plastic bag production, in particular to a film blowing printing device for degradable plastic packaging bags. Background technique [0002] With the increasing demand of plastic bags in people's lives, the film blowing machine for making plastic film came into being. The raw material for the production of plastic film is plastic particles. Under the action of the suction device, the plastic particles are sucked into the screw extruder through the suction pipe connected to the suction device. The screw extruder transports the plastic particles, and then the plastic The pellets are heated and extruded from the die head, and the plastic bag products extruded from the die head continue to be transported upward after being cooled by the blowing pipe, and then conveyed and rolled up after being squeezed at the highest point of the film blowing machine. [0003] Since the plastic bag product extruded from the die is cyl...

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Problems solved by technology

[0003] Since the plastic bag product extruded from the die is cylindrical, the overall length of the extruded plastic bag product is very long when it is not cut, and the existing film blowing machine directly blows the cylindrical The plastic bag product is conveyed upwards, and the plastic bag product will shake during the upward conveying process, and the transmission of the plastic bag product is unstable. It is necessary to use the guide roller for auxiliary guidance, but for the different diameters of different plastic film columns, it is necessary to adjust the guide roller. Adjust, after retrieval, such as application number CN202121570699.7, a kind of adjustable film blowing machine discharge guide device, which includes a frame and a frame, the frame is provided with some rotating rollers, the peripheral surface of the rotating rollers and the plastic bag Contact, the frame includes a fixed ring, an adjusting ring and a number of installation rods, the fixed frame is fixedly connected with the frame, the installation rods are arranged in an array along the fixed ring, one end of the installation rod is connected with the fixed ring, the other end passes through the adjustment ring, the installation rod The length direction is consistent with the traveling direction of the plastic bag. The rotating roller is connected with the installation rod. There are several rotating rollers along the length direction of the installation rod, and the distance between each rotating roller can be adjusted. It adapts to each diameter through the adjusted transmission roller However, as the diameter of the plastic membrane column increases, the support roller only adjusts the outer diameter, and the support area covered by the unit support point also increases, which will bring insufficient support force and affect the support effect.

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