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Print head for a 3D printer

A technology of 3D printers and print heads, which is applied in the field of print heads, can solve problems such as expensive initial materials, and achieve the effects of optimized orientation, compact structure, and reduced service life

Active Publication Date: 2020-06-02
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The starting material in the form of this silk is very expensive

Method used

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  • Print head for a 3D printer
  • Print head for a 3D printer
  • Print head for a 3D printer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] figure 1 A perspective external view of the print head 10 is shown. The print head 10 has a housing 19 with a funnel-shaped supply 12 for a starting material 21 in the form of granular material 21 . Housing 19 merges upwards into intermediate part 38 . The intermediate part 38 comprises a cylinder 37 in which the piston 31 is guided. Piston 31 in figure 1 The selected perspective view is covered by the cylinder 37 and is therefore only marked. The movement of the piston 31 is driven by an electric motor 32a whose rotational movement is converted into linear movement by a mechanical spindle 32b. The piston 31 and the drive source 32 together form a conveying device 30 for conveying the granular material 21 .

[0035] The displacement s of the piston 31 is measured by means of a displacement measuring system 33 . The force F pressing the piston 31 onto the granular material 21 is measured by means of a force sensor 34 . Said force F and displacement s are supplied ...

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PUM

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Abstract

The invention relates to a print head (10) for a 3D printer (1), comprising a feed section (11) having a feeder (12) for a starting material (21) that is variable in the viscosity thereof; a plasticizing zone (14) having a heater (15) and an outlet opening (16) for the liquid phase (22) of the starting material (21); and a conveying device (30) for conveying the starting material (21) from the feed section (11) to the plasticizing zone (14), wherein the conveying device (30) comprises a piston (31) that can be inserted into the feed section (11). The invention is characterized in that the piston (31) has a first piston portion (5) facing the plasticizing zone (14) and having a guide surface (9), through which the piston (31) is guided in a bore (7) of the print head (10).

Description

technical field [0001] The invention relates to a printing head for a 3D printer. Background technique [0002] 3D printers for variable-viscosity materials obtain the solid phase of the material as starting material, thereby generate a liquid phase and selectively bring this liquid phase to the location belonging to the object to be produced. Such 3D printers include a print head in which a starting material is prepared for printing. Furthermore, means are provided for generating a relative movement between the printing head and the working surface on which the object is to be produced. In this case, only the print head, only the working surface, or both the printing head and the working surface can be moved. [0003] The printhead has a first operating state in which liquid material is expelled from the printhead and a second operating state in which no liquid material is expelled from the printhead. The second operating state is assumed, for example, when another posit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/106B29C64/209B33Y30/00
CPCB33Y30/00B29C64/106B29C64/209B29C48/02B29C48/266B29C48/05B29C48/92B33Y50/02B29C64/321B29C64/364B29C64/118B29C64/295B29C64/393B29C64/35
Inventor H·扬勒N·伦格
Owner ROBERT BOSCH GMBH