JPH034023U - - Google Patents

Description

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings relate to this invention; FIG. 1 is an enlarged schematic half-sectional view showing the first embodiment of this invention, and FIG. 2 is a die head discharge port portion showing the second embodiment. FIG. 3 is a schematic diagram of the main part of the third embodiment, FIGS. 4, 5, and 6 are partial sectional views of the parison manufactured in each embodiment, and FIG. FIG. 7 is a schematic diagram of main parts of another embodiment. Explanation of the main symbols in the diagram: A...Die head.

Claims (1)

[Claims for Utility Model Registration] (1) A die head for a blow molding machine, wherein the molding die is provided with at least two resin supply channels that communicate with a single parison discharge port of the molding die, the molding die comprising: The inner peripheral edge of the parison discharge port is located at the lower end peripheral edge of the mandrel core placed in the center.
Further, the outer peripheral edge of the parison discharge port is formed by the inner peripheral edge of the die ring, and the partition wall of the at least double resin supply path is formed by at least one annular sleeve provided concentrically with the mandrel core. A die head for a blow molding machine, characterized in that a mandrel core and a die ring are moved toward and away from the lower end of the innermost sleeve and are displaceable in the axial direction of the innermost sleeve. (2) The mandrel core and the die ring are disposed so as to be able to selectively approach and separate from the inner and outer inclined surfaces of the lower end of the annular sleeve formed at an acute angle. Die head for the blow molding machine described. (3) The lower end peripheral edge of the mandrel core comes into contact with and separates from the lower end inclined inner surface of this innermost sleeve, and this mandrel core is arranged so that the innermost resin supply path can be opened and closed at the parison discharge port. A blow molding machine according to claim 1 of the utility model registration claim, characterized in that the die ring is arranged so that the inner peripheral edge of the die ring can come into contact with and separate from the die ring, and the outermost resin supply channel can be opened and closed at the parison discharge port. die head. (4) The innermost sleeve is composed of an inner and outer double movable sleeve, the lower end of the inner movable sleeve is attached to the periphery of the lower end of the mandrel core so as to be able to come into contact with and detach from it, and the lower end of the outer movable sleeve is attached to the lower end of the die ring. Utility model registration claim 1, characterized in that the inner movable sleeve is provided to be movable toward and away from the inner peripheral edge, and is for opening and closing the inner resin supply passage, and the outer movable sleeve is for opening and closing the outer resin supply passage. Die head for blow molding machines. (5) Registration of a utility model characterized in that each resin supply path is connected to an accumulator type injection machine, and an extruder for feeding molten resin is connected to each of the accumulator type injection machines. A die head for a blow molding machine according to claim 1.