Shot Cascade Cleaning for 3D Printed Surface Debris Removal

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Solution Overview

Problem

Existing methods for cleaning 3D printed components, such as brushing or wiping, risk damaging the desired surface of the product due to excessive pressure, and there is a need for an automated, precise method to remove surface debris like silica without manual intervention.

Innovation Solution

A shot cascading apparatus using metallic or ceramic pellets is employed to clean 3D printed components by applying a controlled amount of shot media through gravity, with a pneumatic actuated gate and vacuum-assisted separation of used media for recycling, ensuring thorough cleaning without damaging the product.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If manual brushing is used to remove surface debris, then cleaning effectiveness is improved, but the risk of damaging the printed product increases

Engineering Contradiction:

Improvecleaning effectivenessVSAvoidproduct damage risk

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent replaces manual mechanical brushing with an automated shot cascading system where pellets fall under gravity to clean the surface. This substitution eliminates human pressure control issues while maintaining effective debris removal through controlled pellet impact.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces shot pellets as an intermediary cleaning medium between the operator and the printed product. These pellets perform the actual cleaning action, allowing indirect contact that prevents direct mechanical damage while still achieving effective debris removal.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If automated shot cascading is used for cleaning, then productivity is improved, but device complexity increases

Engineering Contradiction:

Improvecleaning automationVSAvoidapparatus structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The cleaning apparatus is segmented into distinct functional components: a shot supply hopper, a cascading chamber where pellets fall, and a collection system. This segmentation allows each component to perform its specific function independently, simplifying the overall design while enabling automation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The shot pellets serve themselves by falling under gravity through the cascading chamber, eliminating the need for complex mechanical drive systems. The gravity-fed mechanism automatically propels the cleaning media without requiring motors, controllers, or power sources, thereby maintaining simplicity while achieving automation.

Inventive Principle:

Principle #25Self-service

3Manufacturing precision

If shot pellets are used for cleaning, then manufacturing precision is improved, but loss of substance increases

Engineering Contradiction:

Improvesurface finish qualityVSAvoidcleaning media consumption

Core Design Contradiction:

Manufacturing precisionVSLoss of substance

Solution Approach 1:

The patent implements a recovery system where spent shot pellets are collected after cascading and reused in subsequent cleaning cycles. This eliminates continuous consumption of cleaning media while maintaining consistent surface finish quality, as the pellets retain their cleaning effectiveness across multiple uses.

Inventive Principle:

Principle #34Discarding and recovering

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The apparatus effectively removes surface debris like silica efficiently and automatically, preserving the integrity of the printed component for further processing and commercial use, while allowing for the reuse of cleaning media.

Implementation Method 1

A shot cascading apparatus that uses metallic or ceramic pellets to gently remove surface impurities by gravity-fed streams

Methodology Applied

Scientific EffectGravity: Gravitation

Implementation Method 2

the application of the shot cascading apparatus... utilizes a mild form of shot depositing device, of metallic, ceramic, or other pellets, for use as cleaning components

Methodology Applied

Scientific EffectImpact force: Impact Force

Data Source

PatentUS12611747B2Shot cascading apparatus for cleaning 3D printed components

Publication Date: 2026.04.28 BARRON EMERSON S

AI summary

A shot cascading apparatus for cleaning 3D printed components, generally of any surface debris, such as residue silica from the printing of the component, includes a series of vertically aligned structures, including a shot supply hopper, having a bottom regulated shot gate, for discharging through gravity of metallic shot, into a lower aligned funnel, nested within the bin of a machine base, that allows for surface cleansing of a printed component while achieving a finished product. The supply hopper has a shot gate that is adjustable, for controlling the amount of released shot, and the bottom of the funnel includes a sand separator nozzle, that separates the steel shot from the residue sand, drawing the sand back into the nozzle and conveying it by suction to a location for collection. Beneath the bin is a shot recycle pump, that returns the steel shot back into the supply hopper, for immediate reusage. Various structural support is provided for the hopper, the funnel, and the bin, to maintain the relative degree of separation between these components, to facilitate their usage and operations.