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Planetary mixed extrusion molding device

An extrusion molding, planetary technology, applied in the field of planetary mixing extrusion molding devices, can solve the problems of insufficient mixing of cement, hydration and solidification, thin slurry, etc., and achieve compact structure, stable product molding, and overall light weight effect

Pending Publication Date: 2021-04-20
ZHONGSHAN AISHANGZHITONG INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the linear speed of the spiral blade inside the tank is different, which will cause the cement close to the worm to not be fully stirred, and it is easy to hydrate and solidify during the printing process.
The Chinese invention patent "A Device and Method for Ceramic 3D Printing Extrusion Forming" (201710099473.5) is to complete the extrusion molding on a single screw, which will also cause the clay rubber near the screw to be insufficiently stirred during the stirring process. It is easy to cause the extruded slurry to be thinner and the slurry stored in the storage tank to be thicker

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1 uses cement-based materials to form products, and the screw groove depths of the sun screw 11 and the planetary screw 10 are both 4mm. The sun screw 11, the planetary screw 10, and the mixing drum 12 are all made of stainless steel. The mixing drum 12 and the fixing plate 3 are connected with bolts and nuts, and the upper clamping plate 5 and the lower clamping plate 9 are fixed between the two. The distance between the planetary screw 10 and the inner wall of the mixing drum 12 is 2mm. The diameter of the sun screw 11 is 20 mm, the diameter of the planetary screw 10 is 10 mm, the diameter of the sun gear 6 is 24 mm, and the diameter of the planetary gear 7 is 6 mm. The helical blade of the sun screw 11 is a right-handed helix, and the helical blade of the planetary screw 10 is a left-handed helix. The mixing drum 12 and the branch cylinder form a branch cylinder with a "bu"-shaped structure. The branch part of the cylinder is connected with the conveying...

Embodiment 2

[0060] The principle of this embodiment is the same as that of Embodiment 1, but the details are different.

[0061] Embodiment 2 uses chocolate material to mold the product, and the screw groove depths of the sun screw 11 and the planetary screw 10 are both 2 mm. Sun screw 11, planetary screw 10, and mixing drum 12 all adopt food-grade plastic materials. The mixing drum 12 and the fixing plate 3 are connected with bolts and nuts, and the upper clamping plate 5 and the lower clamping plate 99 are fixed between the two. The distance between the planetary screw 10 and the inner wall of the mixing drum 12 is 1 mm. The diameter of the sun screw 11 is 10 mm, the diameter of the planetary screw 10 is 5 mm, the diameter of the sun gear 6 is 12 mm, and the diameter of the planetary gear 7 is 3 mm. The helical blade of the sun screw 11 is a right-handed helix, and the helical blade of the planetary screw 10 is a left-handed helix. The mixing drum 12 and the branch cylinder form a br...

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Abstract

The invention discloses a planetary mixed extrusion molding device. The planetary mixed extrusion molding device comprises a stirring cylinder, a driving mechanism, a sun screw rod arranged in the stirring cylinder and a plurality of planetary screw rods, wherein a nozzle is arranged at the lower end of the stirring cylinder, and a feeding opening is formed in the outer side wall of the stirring cylinder; the sun screw rod is arranged in the middle portion of the stirring cylinder, and all the planetary screw rods and the sun screw rod are arranged in parallel; and the driving mechanism drives the sun screw rod to rotate around the axis of the sun screw rod, and the driving mechanism further drives all the planetary screw rods to revolve around the axis of the sun screw rod and rotate around the rotating axis of the planetary screw rods. The planetary mixed extrusion molding device adopts a planetary gear set, and stirring and extruding are carried out at the same time, so that it is guaranteed that slurry is evenly and stably mixed inside the stirring cylinder.

Description

technical field [0001] The invention relates to the field of extrusion molding devices, in particular to a planetary mixing extrusion molding device. Background technique [0002] At present, 3D printing equipment for some slurries (cement, clay, chocolate, batter) mainly uses freeform forming. During the process of printing slurries, the slurries tend to form agglomerates and block easily, resulting in printing failures. Especially when 3D printing is performed with cementitious materials, the materials are easily hydrated and solidified. Therefore, when printing large components, the material tends to solidify in the mixing drum for too long, hindering extrusion. At present, most of the methods used in 3D printing large-scale components are to process the bottom part of the component first, and when the material starts to solidify, the printing is suspended first, and then the slurry is re-prepared to continue printing the upper component. Such a printing method greatly ...

Claims

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Application Information

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IPC IPC(8): B28B1/00B28C5/16B28C5/08A23G1/20A21C11/00B33Y30/00
Inventor 刘欣宇王雷冲
Owner ZHONGSHAN AISHANGZHITONG INFORMATION TECH CO LTD
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