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Molding device and molding method for producing hollow molded articles

A technology for molding devices and molded products, which is applied in the direction of hollow objects, applications, household appliances, etc., to achieve the effect of improving the sealing function

Active Publication Date: 2016-12-21
ROECHLING AUTOMOTIVE SE & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the main disadvantage of injector injection is that, in known molding devices, only hollow moldings with constant wall thickness and constant cross-section can be produced due to the rigidity of the injectors used

Method used

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  • Molding device and molding method for producing hollow molded articles
  • Molding device and molding method for producing hollow molded articles
  • Molding device and molding method for producing hollow molded articles

Examples

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Embodiment Construction

[0051] figure 1 Shows a longitudinal section through a molding device 10 according to a first exemplary embodiment of the invention, comprising a mold 14 with a cavity 16, a filling device 18 for filling the cavity 16 with free-flowing molding material (shown here only very schematically), the ejector body 20 and a displacement device 22 in the form of a nozzle arrangement 30 designed to drive the ejector body 20 along the movement trajectory B into the filled The device 18 is used to fill the mold cavity 16 with molding material.

[0052] The trajectory of motion B takes a curved course, which corresponds to the course of the longitudinal axis L of the mold cavity 16 and the hollow molded article 12 to be produced in the molding device 10 (see image 3 ) axis G (see image 3 )route.

[0053] The mold cavity 16 comprises three mold cavity parts 16a, 16b and 16c, which are arranged successively along the trajectory B of movement. The mold cavity parts 16a and 16b or the mol...

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Abstract

The invention relates to a molding device (10) for producing hollow molded articles (12), comprising: a mold (14) having a cavity (16), filling the cavity (16) with molding material in a free-flowing state ) filling device (18), ejector (20; 120) and displacement device (22), the displacement device is designed to drive the ejector (20) to move along the trajectory (B) into the mold for filling In the molding material of cavity (16), wherein mold cavity (16) comprises at least two mold cavity parts (16a, 16b, 16c) that are arranged successively along the trajectory (B) of motion of ejection body (20), these parts have differently shaped cross-sections (Qa, Qb, Qc) perpendicular to the trajectory of motion (B), and wherein the ejector body (20) comprises a deformed portion formed of a deformed material having a higher density than the molding material A lower elastic compressive stiffness such that a cubic test specimen composed of said deformed material has a lower elastic compressive stiffness than a test specimen of the same shape and size composed of said molded material in the cured state.

Description

technical field [0001] The present application relates to a molding device for the manufacture of hollow molded articles, the molding device comprising: a mold with a cavity, a filling device for filling the cavity with molding material in a free-flowing state, a projectile and a displacement device, The displacement device is designed to drive the projectile along a trajectory into the molding material used to fill the mold cavity. Background technique [0002] Such a molding device is disclosed, for example, in document WO 2010 / 007142 A2. [0003] As described in the aforementioned documents, it is generally known to produce plastic articles by injection molding or even by blow molding. With injection molding, molded articles can be produced with higher precision than with blow molding, but more manufacturing steps are required to produce hollow articles. [0004] In injection molding, for example, half-shells are first produced and these half-shells are subsequently wel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/32B29C45/17B29L22/00
CPCB29C45/1704B29C2045/0087B29C2045/1707B29C2045/1719B29C2045/1724B29L2023/004
Inventor I·德梅特里F·迪波里F·奇尼
Owner ROECHLING AUTOMOTIVE SE & CO KG
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