Tilt Gravity Casting Ladle Sliding Gate

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing tilt type gravity molding devices face issues with clogging of molten metal, increased length of the sprue runner, and difficulty in temperature control due to the separate closing mechanism and longer sprue runner, which complicates the process and increases costs.

Innovation Solution

A tilt type gravity molding device with a ladle having a sliding plate-like opening/closing body that aligns with the pouring gate, and a gas supplying section with a horizontally communicated gas passage to pressurize the molten metal within the mold, eliminating the need for a riser and reducing sprue runner length, thereby preventing clogging and facilitating temperature control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a separate closing mechanism is used to close the sprue runner, then the molten metal can be contained, but the sprue runner length increases and temperature control becomes difficult

Engineering Contradiction:

Improvemolten metal containmentVSAvoidsprue runner length

Core Design Contradiction:

ReliabilityVSLength of moving object

Solution Approach 1:

The closing body is integrated into the ladle structure, merging the pouring function and closing function into a single component. The closing body forms both the pouring gate opening and the closing mechanism, eliminating the need for a separate closing device and reducing sprue runner length.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The closing body performs multiple functions: it forms the pouring gate opening, controls molten metal flow, and closes the pouring gate. This multi-functional design eliminates the need for separate components and reduces overall system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Ease of operation

If the sprue runner length is increased to accommodate the closing mechanism, then the closing function is achieved, but temperature control of molten metal becomes difficult

Engineering Contradiction:

Improveclosing functionVSAvoidmolten metal temperature control

Core Design Contradiction:

Ease of operationVSTemperature

Solution Approach 1:

The closing body is integrated into the ladle structure, merging the pouring function and closing function into a single component. This integration minimizes the distance between the ladle and mold, reducing sprue runner length and improving temperature control.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If a riser is formed to compensate for volume decrease during solidification, then shrinkage cavities are prevented, but additional molten metal is required and manufacturing cost increases

Engineering Contradiction:

Improveshrinkage cavity preventionVSAvoidmolten metal amount

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

Gas is supplied into the product forming space to pressurize the molten metal during solidification. This pneumatic pressure compensates for volume decrease, preventing shrinkage cavities without requiring additional molten metal for riser formation.

Inventive Principle:

Principle #29Pneumatics and hydraulics

Solution Approach 2:

The pressure of the molten metal is changed by supplying gas into the product forming space. This pressure increase compensates for volume decrease during solidification, eliminating the need for risers and reducing molten metal consumption.

Inventive Principle:

Principle #35Parameter changes

4Reliability

If gas is supplied into the product forming space to pressurize molten metal, then shrinkage cavities are prevented, but the molding cycle time is reduced only if riser cooling time is eliminated

Engineering Contradiction:

Improveshrinkage cavity preventionVSAvoidmolding cycle time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #29Pneumatics and hydraulics

Solution Approach 2:

Inventive Principle:

Principle #35Parameter changes

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

This design simplifies the closing mechanism, reduces sprue runner length, prevents clogging and temperature fluctuations, and allows for easier control of molten metal amount, thereby shortening the molding cycle and reducing manufacturing costs.

Implementation Method 1

the gas supplying section 6 supplies the gas into the product forming space 3, and thus the molten metal 7 contained in the mold 2 can be pressurized by the gas

Methodology Applied

Scientific EffectGas pressurization: Pressure Increase

Implementation Method 2

a gravity molding device for molding a product by pouring a molten metal only due to gravity of the molten metal into a mold

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentEP3112053B1Inclined gravity casting device

Publication Date: 2019.09.18 MORIKAWA KANAGATA

Figure 1
Figure 2
Figure 3

AI summary

Provided is a tilt type gravity molding device which requires no riser, prevents increase in length of a sprue runner, suppresses occurrence of clogging of a molten metal, and facilitates temperature control of the molten metal. The tilt type gravity molding device includes: a mold having defined therein a product forming space for forming a molded product, and configured to receive a molten metal from a pouring gate; a ladle including: a storing section capable of storing the molten metal therein; and a plate-like opening/closing body abutting on the mold, and having an injection port capable of being aligned with the pouring gate; and a gas supplying section for supply gas into the product forming space. The ladle is slidably mounted to the mold, and is slidable between an opening state in which the injection port is aligned with the pouring gate, and a closing state in which the plate-like opening/closing body closes the pouring gate.