Die head melt flow guide device of hollow plastic container blowing forming machine

By changing the melt flow channel of the die head of the hollow plastic container blow molding machine from a horizontal to a vertical arrangement and adopting an inverted Y-shaped flow channel structure, the problems of melt retention and frictional heat were solved, achieving uniform melt flow and energy saving and weight reduction of the die head.

CN224210515UActive Publication Date: 2026-05-08SUZHOU TONGDA MACHINERY
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Patent Information

Application Number
CN202521566416.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-25
Publication Date
2026-05-08
Estimated Expiration
2035-07-25

AI Technical Summary

Technical Problem

The existing blow molding machine for hollow plastic containers has a horizontally arranged die head melt flow channel, which leads to melt retention, significant frictional heat shearing, bubble overflow and blockage, and increases the weight and energy consumption of the die head.

Method used

The melt flow channel was changed from a horizontal arrangement to a vertical arrangement, and an inverted Y-shaped flow channel structure was adopted to shorten the flow path, reduce friction and shear heat, and design a reasonable manifold to ensure uniform melt flow, reduce die weight and reduce heating section.

Benefits of technology

It achieves uniform and smooth flow of the melt, shortens the die head color change time, reduces energy consumption, and reduces the weight of the die head and the number of heating sections.

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Abstract

A die head melt flow guiding device of a hollow plastic container blowing forming machine comprises a flow dividing plate melt outflow adjusting control mechanism and a melt flow dividing mechanism, and the melt flow dividing mechanism comprises a melt flow dividing device fixing plate, a melt flow dividing device and a melt leading-in connector; the splitter plate melt outflow adjusting control mechanism is arranged on the lower portion of the side, back to the front melt splitter plate, of the rear melt splitter plate, and is characterized in that the structure of the rear melt splitter plate sub-runner is the same as that of the front melt splitter plate sub-runner, and the front melt splitter plate sub-runner comprises a first material receiving runner and a second material receiving runner; when the melt leading-in connector is fixed to one side of the melt front splitter plate, one end of the first material receiving runner and one end of the second material receiving runner are jointly communicated with the melt leading-in connector, and the other end of the first material receiving runner and the other end of the second material receiving runner incline downwards, form an inverted first Y-shaped runner and an inverted second Y-shaped runner and are communicated with the die head body. The melt flow path is shortened, the die head color changing time is shortened, friction between the melt and the runner wall is relieved, shearing heat is reduced, and it is guaranteed that the melt flows evenly and smoothly.
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