Ball Pump for Strapping Tool Hydraulic Actuation
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Solution Overview
Problem
Conventional strapping tools are limited by the need for external power sources, are often heavy and cumbersome, and lack self-lubricated moving parts, making them unsuitable for applications where power is unavailable and requiring a lightweight, powerful, and versatile solution.
Innovation Solution
A battery-powered strapping tool with a hydraulic assembly featuring a piston-less ball pump and self-lubricated moving parts, including a spring-loaded hydraulic tank and directional valve, allowing operation in various orientations and efficient strapping operations on different materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional strapping tools are powered from centralized systems (electrical or pneumatic), then they can perform strapping operations, but they require external power sources that are not available in many applications and make the tools heavy and cumbersome
Solution Approach 1:
The patent replaces conventional electrical or pneumatic power systems with a self-contained hydraulic system. The motor-driven pump generates hydraulic pressure that actuates the strapping mechanism, eliminating the need for external power sources while maintaining operational capability in remote or mobile applications
Solution Approach 2:
The strapping tool is designed with a self-contained power and actuation system that enables it to function independently of external infrastructure. This universal design allows the tool to be deployed in diverse applications whether or not electrical or pneumatic power is available
2Ease of operation
If conventional strapping tools use traditional mechanical or pneumatic actuation, then they can perform strapping operations, but they are overly heavy and cumbersome
Solution Approach 1:
The patent employs a hydraulic actuation system where a motor-driven pump generates high-pressure hydraulic fluid that actuates the strapping mechanism. This hydraulic system delivers substantial force for strapping operations while being more compact and lighter than conventional pneumatic or mechanical systems with equivalent power output
3Reliability
If conventional strapping tools use traditional mechanical components, then they can perform strapping operations, but they lack self-lubricated moving parts resulting in increased friction and wear
Solution Approach 1:
The patent incorporates self-lubricated moving parts within the hydraulic and mechanical components. The hydraulic system itself provides lubrication to moving surfaces through the hydraulic fluid, and special bearing surfaces are designed to be self-lubricating, eliminating the need for separate lubrication systems and reducing maintenance requirements
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 tool is lightweight, powerful, and self-sufficient, enabling convenient use in any application without external power, with reduced leakage and increased efficiency in securing strapping around packages or bundles.
Implementation Method 1
a pump rotor; and a plurality of balls displaced by the pump rotor, the plurality of balls configured to displace a fluid in the pump
Data Source
AI summary
A strapping tool and a pump used thereby are disclosed herein. The strapping tool includes a battery-powered motor; a hydraulic assembly operatively coupled to the battery-powered motor; and a sealing assembly, the sealing assembly comprising at least one crimping jaw member, the hydraulic assembly operatively coupling the at least one crimping jaw member to the battery-powered motor, and the at least one crimping jaw member of the sealing assembly configured to crimp or notch a strapping seal member so as to secure a piece of strapping around a package or bundle of items. The pump includes a pump rotor; and a plurality of balls displaced by the pump rotor, the plurality of balls configured to displace a fluid in the pump. The pump contains no linkage members and no piston.