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Improved extrusion process and associated device

A technology of extruder and cylinder, which is applied in 3D printers, producing pasta dough, distributing and extruding dough strings, and can solve problems such as flow of extrusion strings

Active Publication Date: 2019-08-23
BARILLA G E R F LLI SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improper or excessive retraction of the piston head can cause air (even already built-up string) to be sucked into the cylinder, while insufficient retraction will not solve the problem of properly stopping the flow of extruded string

Method used

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  • Improved extrusion process and associated device
  • Improved extrusion process and associated device
  • Improved extrusion process and associated device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0077] figure 1 The brief form of the extruder 1 according to the present invention is shown, including:

[0078] -A cylindrical tubular body 2 with a first end 3 and a second end 4 closed by a bottom 8 (identifiable by the tapered section of the cylindrical tubular body 2 shown) with at least one nozzle 9;

[0079] -A piston 10 inserted into the side wall 2a of the cylindrical tubular body 2 through the second end 4. The piston 10 includes a rod 11 and a piston head 12, which are removably coupled to each other. The piston head 12 is connected to the side of the cylindrical tubular body 2 The wall 2a touches.

[0080] The piston 10 is designed such that the forward movement of the rod 11 toward the first end 3 causes the piston head 12 to also be pushed to the first end 3 to be coupled with the first end 3, and the movement of the rod 11 toward the second end 4 does not cause the piston head The movement of 12 is because the rod 11 and the piston head 12 are not connected to each o...

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PUM

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Abstract

A process for the production of a three-dimensional item by extrusion of a string of dough comprises a step of providing a viscoelastic food dough inside an extruder comprising a cylindrical tubular body and a piston, an extrusion step by advancing the piston inside the cylindrical tubular body, and a step of interrupting extrusion of the dough by stopping the advancing movement of said piston. Adispensing device comprising such a cylindrical tubular body and such a piston, as well as a printer for the production of an item printed by means of a 3D printing procedure comprising such an extruder, are also described.

Description

Technical field [0001] The present invention relates primarily, but not exclusively, to the food industry sector. [0002] In particular, the present invention relates to a method for distributing and extruding dough strings from viscoelastic food dough, especially from dough based on food meals, such as dough suitable for the production of pasta. [0003] The invention also relates to a system comprising a cylindrical tubular body and a piston, wherein the system is designed to implement the above-mentioned method for distributing and extruding dough strings. The invention also relates to a 3D printer including such a system. Background technique [0004] The production of food products with special or complex forms using three-dimensional (3D) printer technology has been well known in recent years. Patent application WO2010 / 151202 is cited by way of example. This application describes a device for printing two-dimensional or three-dimensional food, including a container for print...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A21C3/04
CPCA21C3/04A21C11/18B33Y30/00A23P2020/253A23P30/20A23P20/20B33Y80/00A47J27/002
Inventor 卢卡·瓜西纳安东尼奥·加利亚尔迪
Owner BARILLA G E R F LLI SPA