Rotor Iron Core Dispensing Device with Stop-Injection Pin
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Solution Overview
Problem
Conventional dispensing devices for filling gaps between rotor iron core and magnetic steel chunks are inefficient, lack precision, result in plastic waste, and fail to achieve reliable separation of waste plastic from the injected plastic, leading to uneven filling and safety risks due to air entrapment and premature curing.
Innovation Solution
An electrically-driven rotor iron core magnetic steel chamber dispensing device with an upper and lower mold, featuring dispensing units that inject plastic upward, a stop-injection opening pin for anchoring waste plastic, and a waste material taking mechanism for automated separation, minimizing plastic waste and ensuring even filling without air entrapment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If conventional dispensing devices are used to fill gaps between magnetic steel chunks, then the dispensing process can be automated, but the devices require lengthy dispensing channels and large plastic blocks causing waste of plastic, uneven heating, and premature curing
Solution Approach 1:
The patent divides the dispensing system into multiple independent dispensing units, each with its own compact dispensing channel. Instead of using one large plastic block and lengthy channel, the system segments the plastic supply into smaller portions that can be precisely delivered to each gap, reducing overall plastic waste and channel length.
Solution Approach 2:
The patent implements localized dispensing where each dispensing unit is positioned directly at the gap location with a short dispensing channel. This local quality approach ensures precise plastic delivery exactly where needed, preventing the premature curing and uneven heating that occur with lengthy channels and large plastic blocks in conventional systems.
2Device complexity
If conventional dispensing devices perform dispensing from top to bottom, then the dispensing process is simple, but air lingers inside the gaps causing uneven and loose plastic filling
Solution Approach 1:
The patent inverts the conventional top-to-bottom dispensing approach by implementing bottom-to-top dispensing. The dispensing units are positioned at the bottom of the rotor iron core and inject plastic upward into the gaps. This inversion allows plastic to displace air upward and outward, preventing air entrapment and ensuring even, dense plastic filling without compromising process simplicity.
3Extent of automation
If conventional dispensing devices are used, then automation is achieved, but residual waste plastic cannot be reused and cannot be precisely caught and conveyed after dispensing
Solution Approach 1:
The patent introduces a waste plastic receiving mechanism as an intermediary component between the dispensing units and the waste plastic disposal system. This intermediary mechanism precisely catches the waste plastic dropped from the die after dispensing and conveys it to a designated region, enabling automated waste plastic handling and potential reuse without manual intervention.
4Extent of automation
If conventional dispensing devices perform upward dispensing, then waste plastic separation is achieved, but the devices cannot reliably achieve separation of waste plastic and plastic injected into the magnetic steel chamber
Solution Approach 1:
The patent extracts the waste plastic separation function into a dedicated waste plastic receiving mechanism positioned below the dispensing units. This separate extraction mechanism reliably catches and removes waste plastic after it drops from the die, ensuring complete separation from the plastic injected into the magnetic steel chamber and enabling reliable automated waste handling.
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 device achieves precise and even filling, reduces plastic waste, prevents premature curing, and enables reliable separation of waste plastic, enhancing the reliability and safety of the magnetic steel chunk fixation process.
Implementation Method 1
a plunger (20) disposed in the plunger barrel (22) to slide upward and downward relative to the plunger barrel (22)
Implementation Method 2
a barb (211) disposed between the pin head portion (27) and the pin body (21) such that, when cured, the plastic forms a reliable anchorage between the waste plastic and the stop-injection opening pin (21)
Implementation Method 3
upon separation of the upper mold (1) and the lower mold (2), the lower mold (2) causes the stop-injection opening pin (21) to move away from the upper mold (1) such that the stop-injection opening pin (21) causes the waste plastic (3) to move away from the upper mold (1)
Data Source
AI summary
An electrically-driven rotor iron core magnetic steel chamber dispensing device is introduced. Dispensing units each include a dispensing channel, dispensing head, plunger barrel, plunger and stop-injection opening pin. The dispensing channel is above the dispensing head and in communication with the dispensing head. The dispensing head is disposed at the top of the plunger barrel and in communication with the plunger barrel. The plunger is displaced in the plunger barrel to move up and down relative to the plunger barrel. The stop-injection opening pin includes a pin body disposed vertically, arranged beside the plunger barrel, and fixed to a lower mold from inside. A pin head portion is disposed at the top of the pin body. A barb is disposed between the pin head portion and the pin body. The pin head portion protrudes into the dispensing channel, allowing molten plastic in the dispensing channel to enter the barb.