Die head structure with adjustable molten blank radial wall thickness

Abstract

The invention relates to a die head structure with the adjustable molten blank radial wall thickness. The die head structure comprises a lower pressing disc and an upper pressing disc, the lower pressing disc is provided with a mouth model containing cavity, and the upper pressing disc is stacked on the lower pressing disc and is provided with an upper pressing disc guiding cavity; the upper portion of an outer opening die extends into the opening die containing cavity and is supported on the upper portion of the lower pressing disc, the lower portion of the outer opening die extends to the position below the lower pressing disc, an inner opening die is located in the outer opening die, the upper portion of the inner opening die is matched with the lower portion of a mandrel sleeve, the lower portion of the inner opening die extends to the position below the lower pressing disc, a melt guiding and feeding cavity is formed between the outer wall of the mandrel sleeve and the inner wallof the upper portion of the outer mouth model, and space between the inner wall of the inner mouth model and the inner wall of the lower portion of the outer mouth model forms a molten blank runner; and the die head structure is characterized by further comprising an inner mouth model anti-deformation supporting mechanism and a plurality of molten blank radial wall thickness adjusting mechanisms,the inner mouth model anti-deformation supporting mechanism is fixed to the bottom of the mandrel sleeve, the molten blank radial wall thickness adjusting mechanisms are fixed to the outer wall of thelower pressing disc, and the molten blank radial wall thickness adjusting mechanisms are sleeved with an inner mouth mold cover. A good supporting condition can be provided for the inner mouth mold;and the requirement for radial change adjustment on the wall thickness of a molten blank is met.

Description

technical field [0001] The invention belongs to the technical field of plastic product forming machinery, and in particular relates to a die head structure with adjustable radial wall thickness of a smelt. Background technique [0002] The aforementioned die head structure is an important part of the structural system of the blow molding machine used to blow hollow plastic products. Hollow plastic products such as various bottles, gallon barrels, palletizing barrels, water tanks, and pallets for stacking goods , Various pipe fittings such as air ducts for vehicles, etc. As known in the industry, if you want to obtain a molten body with a radial wall thickness change in some parts (that is, a plastic molten body or a molten plastic body, the same below), then it is necessary to modify the structure of the die head mechanism. The gap between the inner die and the outer die of the system is adjusted. Specifically, the width of the melt flow channel between the inner die and th...

AI Technical Summary

Problems solved by technology

However, for the die head mechanism in which the melt flow channel is located between the outer wall of the cone-shaped inner die and the inner wall of the outer die, in actual use, the inner die tends to be elastically deformed, while the inner die The elastic deformation of the mold will lead to abnormal and irregular changes in the gap of the melt flow channel, and in severe cases, the product will be scrapped; since the adjustment form of the radial wall thickness control device of this patent is realized by indirect adjustment, the so-called indirect adjustment It is to change the position of the die fixing seat together with the die by changing the position of the die fixing seat cover, so as to realize the change of the gap between the inner wall of the die and the outer wall of the aforementioned mold core, so it has no inspiration for the adjustment of the outer die. Because the gap adjustment between the inner and outer dies can only be realized through the adjustment of the outer die; this patent arranges the radial wall thickness control device on the zigzag fixed sleeve, but how to arrange it on the cylindrical shape There is no apocalyptic significance on the pressure plate

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