Repositioned Exhaust Port for Motor Cooling in Binding Machines
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Solution Overview
Problem
Reinforcing bar binding machines face issues with heat management due to high-power motors, leading to increased dimensions and susceptibility to dust and moisture ingress, particularly when using cooling fans and exhaust slits at the rear end.
Innovation Solution
A binding machine design incorporating a blower for forced cooling, with an exhaust port positioned to prevent moisture and dust ingress, and a handle orientation that keeps the exhaust port facing downward or sideways, reducing the machine's axial length and improving ergonomics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling fan and exhaust slit are arranged at the rear end of the housing, then the motor cooling effect is improved, but the dimensions of the housing along the axial direction increase and the feeling of use deteriorates
Solution Approach 1:
The exhaust port is repositioned from the rear end (axial direction) to the side surface (radial direction) of the housing, changing the exhaust direction from axial to radial. This dimensional change allows the cooling function to be maintained while avoiding the extension of housing length in the axial direction, thus resolving the contradiction between cooling effectiveness and compact dimensions.
2Temperature
If a cooling fan and exhaust slit are arranged at the rear end of the housing, then the motor cooling effect is improved, but dust and moisture easily enter the housing through the exhaust slit
Solution Approach 1:
The exhaust port is repositioned from the rear end to the side surface of the housing, changing the exhaust direction from upward (when held horizontally) to sideways. This dimensional change prevents dust and moisture from entering the housing through the exhaust port during normal usage, as the exhaust flow now moves laterally away from potential contamination sources.
3Power
If high output is required for the motor to twist the wire and feed the wire in opposite directions, then the binding strength is improved, but the temperature rise of the motor increases
Solution Approach 1:
A blower device is introduced to create forced air circulation through the housing, utilizing pneumatic principles to remove heat from the motor. The blower draws air through the housing and exhausts it through the side-mounted port, creating a cooling airflow that carries away heat generated by the high-power motor operations.
Solution Approach 2:
Air is introduced as an intermediary cooling medium between the motor and the external environment. The blower device circulates air through the housing interior, allowing heat transfer from the motor to the air stream, which is then exhausted externally, effectively mediating the heat removal process.
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 effectively suppresses temperature rise within the machine, prevents dust and moisture entry, and maintains a compact design while ensuring efficient cooling of motors, enhancing user experience and operational efficiency.
Implementation Method 1
a blower configured to generate an air flow through an inside of the main body
Implementation Method 2
an exhaust port provided on one side or another side of the main body in a second direction intersecting the axial direction of the rotating shaft and an extending direction of the handle, and configured to exhaust air generated by the blower and passed through the inside of the main body
Data Source
AI summary
A binding machine includes a main body, a wire feeder, a curl forming part, a cutter configured to cut the wire wound on the object to be bound, a binding part including a rotating shaft, a handle provided on one side of the main body in a first direction intersecting an axial direction of the rotating shaft, a blower configured to generate an air flow through an inside of the main body; and an exhaust port provided on one side or another side of the main body in a second direction intersecting the axial direction of the rotating shaft and an extending direction of the handle, and configured to exhaust air generated by the blower and passed through the inside of the main body.