Single Driver Strapping Machine with One-Way Bearings
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Solution Overview
Problem
Conventional automatic strapping machines have complex control workflows due to the need to repeatedly switch control between multiple drivers, leading to higher maintenance costs and potential for a more complex design.
Innovation Solution
A strapping machine with an output regulating device featuring two power output units and a switching unit, allowing all strapping actions to be performed using a single driver, with one-way bearings and gear trains enabling directional control of drive shafts to manage the feeding, clamping, hot-melting, and cutting of straps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple drivers (feeding motor and camshaft motor) are used to perform different strapping actions, then the machine can complete all necessary actions (feeding, retracting, tensioning, clamping, hot-melting, cutting), but the control workflow becomes complex and maintenance costs increase
Solution Approach 1:
The patent combines the functions of multiple drivers (feeding motor and camshaft motor) into a single driver system. The single driver controls both the feeding roller group and the camshaft-driven units (clamping, hot-melting, cutting) through a unified power transmission mechanism, thereby reducing control complexity while maintaining the capability to perform all necessary strapping actions
Solution Approach 2:
The single driver is designed to perform multiple functions by controlling different output units at different times. The driver can switch between driving the feeding roller group for strap manipulation and driving the camshaft for clamping, hot-melting, and cutting operations, making one component universal for all strapping actions
2Adaptability or versatility
If multiple drivers are used to control different actions, then all strapping operations can be performed, but the number of control switches increases leading to higher maintenance costs
Solution Approach 1:
By merging the control of multiple drivers into a single driver system, the patent reduces the number of control switches and electrical connections that require maintenance. Fewer independent motors and control circuits mean fewer potential failure points and lower maintenance costs
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
Simplifies the control workflow, reduces maintenance costs, and allows for a more compact design by enabling all necessary strapping actions with a single driver, thereby improving operational efficiency and reducing maintenance requirements.
Implementation Method 1
a first one-way bearing that is connected between the main shaft and the first drive shaft such that the first drive shaft is co-rotatable with the main shaft when the main shaft rotates in a first rotational direction, and that the first drive shaft is not co-rotatable with the main shaft when the main shaft rotates in a second rotational direction which is opposite to the first rotational direction
Implementation Method 2
a second one-way bearing connected to the transmission gear train and one of the main shaft and the second drive shaft such that the second drive shaft is co-rotatable with the main shaft when the main shaft rotates in the second rotational direction, and that the second drive shaft is not co-rotatable with the main shaft when the main shaft rotates in the first rotational direction
Data Source
AI summary
A strapping machine includes a driver, first and second power output units, and a switching unit. The first power output unit includes a first drive shaft being co-rotatable with a main shaft of the driver only when the main shaft rotates in a first rotational direction via a first one-way bearing for driving the switching unit, and for clamping, hot-melting and cutting a strap. The second power output unit includes a second drive shaft being co-rotatable with the main shaft only when the main shaft rotates in a second rotational direction via a second one-way bearing, and a plurality of output gear trains being engagable with the second drive shaft via the switching unit for feeding, retracting and tensioning the strap.