Die Casting Mold Pin Brake and Carousel System
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Solution Overview
Problem
Conventional die casting machines lack the ability to suspend cast metal parts in mid-air during ejection, making it difficult to handle them safely and efficiently, and they do not automatically recycle the gate and sprues, leading to inefficiencies in the process.
Innovation Solution
The die casting machine incorporates retractable pins with a pin brake system to suspend the cast metal part in mid-air and a gate shear mechanism to recycle the gate, along with a carousel system for efficient casting of multiple parts and a chill plate for temperature control, allowing for precise control over the casting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional die casting machines use traditional ejection methods, then the structure is simple, but the cast metal parts cannot be suspended in mid-air making handling difficult and unsafe
Solution Approach 1:
The ejection system is segmented into multiple independent retractable pins that can be individually controlled. Each pin can be extended or retracted independently, allowing the cast metal part to be suspended in mid-air at multiple points, improving handling safety and ease of operation.
Solution Approach 2:
The pins are designed to be dynamically controllable through the pin brake system, which can engage or disengage on demand. This dynamic control allows the pins to transition from a static ejection structure to an active suspension system, enabling mid-air suspension of cast metal parts for safer handling.
2Loss of substance
If conventional die casting machines do not recycle gate and sprues, then the system is simple, but there is waste of material and process inefficiency
Solution Approach 1:
The gate shear mechanism automatically cuts and separates the gate and sprues from the cast metal part. The separated gate and sprues are then recovered and fed back into the melting process, eliminating material waste and improving process efficiency while maintaining a relatively simple system structure.
Solution Approach 2:
The recycling system is designed to be self-service, where the gate shear mechanism automatically performs the cutting and separation, and the recovered gate and sprues are automatically fed back into the process. This reduces the need for manual intervention and operates with minimal additional complexity.
3Productivity
If a single operator manages multiple molds manually, then the equipment complexity is low, but the productivity is limited
Solution Approach 1:
The carousel system provides multi-functionality by holding and rotating multiple molds in sequence, allowing a single operator to manage multiple casting cycles simultaneously. Each mold can be independently positioned for filling, cooling, and ejection, significantly increasing productivity while keeping the overall system manageable.
Solution Approach 2:
The carousel operates on a periodic cycle, rotating to position each mold in sequence for the casting process. This periodic action allows continuous production across multiple molds while a single operator can efficiently manage the entire cycle, improving productivity without requiring proportional increases in operational complexity.
4Manufacturing precision
If the mold temperature is not controlled, then the system is simple, but the casting quality and process precision are poor
Solution Approach 1:
The temperature control system uses feedback from temperature sensors to monitor the mold temperature in real-time. The controller adjusts the heating or cooling mechanisms based on this feedback to maintain the mold at the optimal temperature for high-quality casting, ensuring consistent manufacturing precision.
Solution Approach 2:
The system controls mold temperature by changing thermal parameters through heating elements and cooling channels. By precisely adjusting these thermal parameters, the system achieves high casting quality while managing the complexity of the temperature control system through automated regulation.
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 solution enables safe and efficient handling of cast metal parts by suspending them in mid-air, automates the recycling of gate and sprues, and optimizes the casting process by allowing a single operator to manage multiple molds, improving the overall efficiency and safety of the die casting process.
Implementation Method 1
the pins include a pin brake, which prevents the pins from being moved while the first portion and the second portion are opening and/or opened
Implementation Method 2
a movable chill plate, such as a copper chill plate, with or without liquid coolant passing through the chill plate, is used to cool the mold to the correct temperature range
Data Source
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AI summary
A die casting machine comprises a carousel and a plurality of molds disposed around the carousel. The carousel rotates about a central axis, such that each of the plurality of molds comes into a position for casting in turn. Each mold comprises a toggle mechanism and extraction pins. A gripping mechanism may extend up through a hole in the carousel table to couple the toggle mechanism to an actuator. At least one of the pins may comprise a pin brake such that the pins remain in position when the mold is opened, suspending a newly cast metal part in mid-air, when the brake is activated. When the brake is deactivated, the pins may retract, and the part may be removed without damaging the cast part.