Flaskless Mold Apparatus with Swiveling Flasks
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Solution Overview
Problem
Conventional methods for making flaskless upper and lower molds are inefficient, particularly in spraying a release agent in a closed space and quickly placing a core, leading to delays in the molding process.
Innovation Solution
The method involves spraying the release agent before defining the molding spaces and allowing it to dry, followed by supplying molding sand, and includes a mechanism for swiveling and alternating cope and drag flasks to facilitate efficient mold creation and core placement, with mechanisms for stripping and setting cores in a single station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a release agent is sprayed in a closed space at the final stage, then the molding space is protected, but the release agent cannot be dried sufficiently causing delays
Solution Approach 1:
The release agent is sprayed on the pattern plate before the molding space is closed, allowing it to dry in advance. This preliminary action ensures the release agent is fully dried before the molding process begins, eliminating drying time delays while maintaining proper release agent application.
Solution Approach 2:
The process is divided into separate stages: release agent application on the open pattern plate, drying period, then closing the molding space. This segmentation allows the release agent to dry independently before the mold is closed, avoiding time loss while ensuring proper application quality.
2Productivity
If conventional flaskless molding methods are used, then mold production is achieved, but molding efficiency is insufficient
Solution Approach 1:
The release agent is applied and dried before the molding space is closed, preparing the mold in advance. This preliminary preparation eliminates waiting time during the molding process, significantly improving molding efficiency and reducing overall process time.
Solution Approach 2:
The molding process is optimized to eliminate idle time by performing release agent application and drying in advance, then continuously proceeding with sand filling and molding operations without interruption, maintaining continuous productive action throughout the process.
3Ease of operation
If cores are placed in the mold using conventional methods, then core placement is achieved, but it is difficult to place cores quickly
Solution Approach 1:
Cores are placed in the mold cavity before the cope flask is positioned on the drag flask. This preliminary core placement allows cores to be inserted easily when the mold is open and accessible, making core placement simpler and faster while maintaining proper positioning.
Data Source
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AI summary
The purpose of the present invention is to provide a method to efficiently make flaskless upper and lower molds, to efficiently spray a release agent in a closed space, and to promptly place a core. The invention is a method for making flaskless upper and lower molds that are stacked, comprises the steps of holding a match-plate between one pair of cope and drag flasks that are horizontally positioned, each of them having an sand-filling port for supplying molding sand at its side wall, defining upper and lower molding spaces by inserting upper and lower squeeze-plates to the respective openings of the pair of cope and drag flasks which openings are opposed to the match-plate, putting the pair of cope and drag flasks and the match-plate in a vertical position, and causing the sand-filling port to be placed in upper position, spraying a release agent to the two molding spaces in upper and lower positions which spaces are defined by inserting the upper and lower squeeze-plates to the open ends, supplying molding sand through the sand-filling port to the two upper and lower molding spaces, and squeezing the molding sand in the two upper and lower molding spaces.