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Method and apparatus for molding polyurethane parts

A technology of reaction components and reaction mixtures, applied in the field of reaction resins, can solve problems such as expensive, delicate and complex

Inactive Publication Date: 2006-09-20
HENNECKE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] While the electrohydraulic piston stroke control of linear amplifier technology does provide a stiff drive system in terms of compression, it is delicate, complex and therefore expensive

Method used

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  • Method and apparatus for molding polyurethane parts
  • Method and apparatus for molding polyurethane parts
  • Method and apparatus for molding polyurethane parts

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Embodiment Construction

[0019] The invention relates to a device for producing molded parts from reactive resins, the device comprising a storage container for the reactive components, a mixer for mixing the reactive components, a dispensing unit and pipes for dispensing the reactive components from the storage container to the mixer road. An important feature of the invention is that at least one of the dispensing units is a piston dispensing unit comprising a dispensing piston and a spindle unit with a spindle and a spindle cap which is dispensed to the dispensing piston, the spindle cap being driven by a torque motor.

[0020] The invention also relates to a process for the production of moldings from reactive resins in an apparatus according to the invention, wherein the reactive components are distributed into a mixer and mixed therein to produce a reaction mixture, which is then discharged from the mixer into Inside the mold or on the base plate, where the reaction mixture solidifies.

[0021]...

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Abstract

Articles, particularly, molded articles are produced from reactive components with an apparatus which includes storage vessels for the reactive components, a mixer for mixing the reactive components, dispensing units and lines for dispensing the reactive components from the storage vessels into the mixer. An important feature of this apparatus is the use of one or more dispensing units which is a piston dispensing unit that includes a dispensing piston and a spindle unit. The spindle unit includes a spindle and a spindle nut which spindle nut is driven by a torque motor.

Description

technical field [0001] The present invention relates to a process and an apparatus for the manufacture of articles, in particular molded articles, from reactive resins, in particular polyurethane, wherein at least one of the reactive components is dispensed with at least one piston dispensing unit comprising a torque motor driven Spindle unit. Background technique [0002] When producing moldings from reactive resins, for example polyurethane, it is conventional to also incorporate fillers in the reactive components. This is done primarily to improve the physical properties of the molded part. Thus, for example barite is incorporated into moldings for sound insulation purposes. Adding ground glass fibers or ground mineral fibers in automobile bumpers to adjust the coefficient of thermal expansion to that of the metal. Natural fibers such as jute or hemp are increasingly used more often, for example in order to increase the stiffness of large-area molded parts. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B7/22B29B7/28B29B7/58B29B7/72B29K63/00B29K79/00B01F23/00B01F23/47
CPCB01F15/0462B29C67/246B29B7/7621B29B7/603B29B7/72B29B7/7471B29B7/7626B29B7/90B01F35/8822A47B88/944A47B95/04A47B96/20A47B88/40
Inventor H·杜斯查内克G·萨拉哈J·威希
Owner HENNECKE