Sand Spreader with Staggered and Pressing Plate Ports
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Solution Overview
Problem
Conventional sand spreading machines in 3D printing equipment face issues such as low efficiency, poor controllability, sand leakage, and uneven sand distribution, which affect printing quality.
Innovation Solution
A sand spreading machine with double layers of sand falling openings, featuring a staggered opening on the upper layer and a sand-pressing-plate opening on the lower layer, equipped with a vibration device and adjustable mechanisms to ensure uniform sand distribution and prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a two-way sand spreading machine is provided with two sand falling openings, then the printing efficiency is doubled, but the structure becomes complicated and occupies large space
Solution Approach 1:
The patent combines two sand falling openings into a single integrated opening structure. The sand falling opening is designed with an adjustable partition plate that can divide the single opening into two separate sand falling paths, allowing two-way sand spreading functionality while maintaining a compact and simplified overall structure.
Solution Approach 2:
The patent employs an adjustable partition plate within the sand falling opening that can be dynamically repositioned. This dynamic adjustment mechanism allows the single opening to adapt between different sand falling configurations, enabling two-way sand spreading without requiring two fixed separate openings, thus reducing structural complexity.
2Device complexity
If conventional sand spreading machines are used, then the structure is simple, but the controllability of sand falling amount is poor and sand leakage occurs
Solution Approach 1:
The patent incorporates an adjustable partition plate that can be dynamically repositioned to control the sand falling amount. This dynamic adjustment mechanism provides precise controllability over sand distribution while maintaining a relatively simple overall structure, preventing both sand leakage and over-spraying.
Solution Approach 2:
The patent changes the geometric parameters of the sand falling opening by adjusting the partition plate position. This parameter adjustment allows precise control over the sand falling amount and distribution, improving reliability while keeping the structural design simple and manageable.
3Device complexity
If sand falling openings are provided without vibration device, then the structure is simple, but sand does not fall uniformly and sand leakage occurs
Solution Approach 1:
The patent introduces a vibration device that applies mechanical vibration to the sand falling opening and sand pressing plate. This vibration ensures uniform sand flow and prevents sand from adhering to the plates, achieving consistent sand falling uniformity while adding only a relatively simple vibration mechanism to the overall structure.
4Reliability
If double layers of sand falling opening with staggered arrangement are used, then sand fluidity is improved and leakage is prevented, but the device complexity increases
Solution Approach 1:
The patent segments the sand falling process into two distinct layers: an upper sand falling opening and a lower sand pressing plate with opening. This segmentation allows sand to fall through the upper opening and be pressed through the lower opening, improving sand fluidity and preventing leakage while maintaining a manageable structural complexity through modular design.
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 solution enhances sand fluidity, reduces sand loss, and ensures continuous and uniform sand falling, improving printing efficiency and quality by controlling the amount of sand falling effectively.
Implementation Method 1
A vibration device is arranged on one side of the left sand falling plate or the right sand falling plate, and during the sand spreading work, sand flows out of the staggered opening and enters the sand-pressing-plate sand falling opening on the lower layer
Data Source
AI summary
A sand spreader includes a sand storage chamber. Two sand discharge ports are disposed below the sand storage chamber, and are an upper-layer staggered sand discharge port and a lower-layer sand pressing plate sand discharge port, respectively. The upper-layer staggered sand discharge port comprises a left side sand discharge plate and a right side sand discharge plate configured to intersect with each other. Horizontal staggered ports are formed in a position at the bottom of the two sand discharge plates, and vertical spacing between the staggered ports is adjustable. Also comprised is the lower-layer sand pressing plate sand discharge port, including left and right side sand pressing plates. Vertical sand discharge ports are disposed between the sand pressing plates on the two sides, and the width of the vertical sand discharge ports is adjustable, so as to further facilitate control over the amount of discharged sand.