Reciprocating Blade Lubrication Structure Against Water and Debris
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Solution Overview
Problem
The existing reciprocating cutting blade apparatuses face issues with foreign substances and water entering the transmission case, leading to reduced durability of the power train and cutting blades, and difficulty in maintaining the cutting blades effectively.
Innovation Solution
The apparatus includes a transmission case with grease reservoirs and through-holes in the support members and cutting blades, allowing for effective lubrication and prevention of foreign substances from entering the transmission case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If through-holes are provided in cutters and support members to supply lubricant, then the cutting blades can move smoothly, but foreign substances and water can enter the transmission case through these through-holes
Solution Approach 1:
The lubricant supply system is segmented into multiple grease reservoirs (upper and lower) positioned at different locations. The support members are divided into multiple through-holes distributed at different positions, allowing lubricant to reach various contact surfaces of the cutting blades while the transmission case is segmented into multiple grease reservoirs that can be filled independently, reducing the risk of foreign substance contamination.
Solution Approach 2:
Grease reservoirs are pre-filled with lubricant before operation. The upper grease reservoir is positioned to receive lubricant that flows down to the lower grease reservoir, ensuring that the cutting blades are pre-lubricated before they begin operation, which prevents foreign substances from contaminating the lubrication paths during operation.
2Manufacturing precision
If the gap between the two cutters is maintained correctly, then the cutting performance is improved, but the structure becomes more complex requiring precise adjustment mechanisms
Solution Approach 1:
The support members are designed with built-in through-holes that automatically align with corresponding through-holes in the cutters. This self-aligning feature allows the cutting blades to be mounted without complex external adjustment mechanisms, as the through-holes themselves guide the positioning and maintain the correct gap automatically during operation.
Solution Approach 2:
The support members serve multiple functions: they provide structural support for the cutting blades, act as guides for positioning, supply lubricant through integrated through-holes, and maintain the correct gap between cutters. This multi-functionality eliminates the need for separate adjustment mechanisms, reducing overall device complexity while maintaining manufacturing precision.
3Reliability
If grease reservoirs are provided in the transmission case, then lubrication is improved, but the device complexity increases
Solution Approach 1:
The grease reservoirs are nested within the transmission case structure. The upper grease reservoir is positioned above the lower grease reservoir, with the support members passing through both. This nested arrangement allows efficient use of space within the transmission case, providing effective lubrication through multiple reservoirs without significantly increasing the overall device complexity.
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 prevents foreign substances and water from entering the transmission case, ensures smooth reciprocation of the cutting blades, improves maintenance efficiency, and reduces wear on the coupling parts, thereby enhancing the durability of the cutting blades and power train.
Implementation Method 1
an upper grease reservoir provided above the upper support member, the upper grease reservoir being configured to accumulate grease poured from the grease inlet
Implementation Method 2
The upper support member includes a through-hole configured to communicate with the upper grease reservoir. The lower support member includes a through-hole configured to communicate with the lower grease reservoir
Data Source
AI summary
A reciprocating cutting blade apparatus includes: a pair of reciprocating cutting blades disposed to overlap one another in a thickness direction; an upper support member and a lower support member sandwiching and reciprocably supporting the reciprocating cutting blades; and a transmission case to which the upper and lower support members maintaining a distance therebetween are mounted. The transmission case includes: a grease inlet and an upper grease reservoir provided above the upper support member accumulating grease poured from the grease inlet and; a lower Grease reservoir provided below the lower support member and accumulating the grease poured from the grease inlet. The upper support member includes a through-hole communicating with the upper grease reservoir. The lower support member includes a through-hole communicating with the lower grease reservoir. The reciprocating cutting blades includes through-holes allowing communication between the through-holes of the upper support member and the lower support member, respectively.