Cam Wheel Axial Movement Prevents Dead Points in Strapping Devices
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Solution Overview
Problem
Conventional strapping devices experience interruptions in workflow due to the formation of dead points, which hinder the efficient operation of cam wheels, leading to reduced work efficiency as manual intervention is required to resolve these issues.
Innovation Solution
A structure comprising a driving wheel, cam wheel, swinging piece, and restoring piece, where the cam wheel is axially movable and includes a pressing portion and pushed portion with thorn teeth, and a restoring spring to prevent dead points by ensuring smooth axial movement and return to the original position, integrated within a strapping device with transmission assemblies for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cam wheel is designed with a fixed position, then the structure is simple, but dead points form causing workflow interruption
Solution Approach 1:
The cam wheel is transformed from a fixed position to an axially movable position through the interaction between the pressing portion on the driving wheel and the pushed portion on the cam wheel. This dynamic adjustment allows the cam wheel to automatically escape from dead point positions during rotation, ensuring continuous operation without manual intervention.
Solution Approach 2:
The cam wheel structure performs self-adjustment through the axial movement mechanism. When the cam wheel approaches a dead point position, the pressing portion pushes the cam wheel axially, causing it to automatically shift position and continue rotation without external intervention, thereby maintaining continuous operation.
2Productivity
If manual intervention is required to resolve dead points, then the structure is simple, but work efficiency decreases
Solution Approach 1:
The cam wheel automatically resolves dead point issues through its axial movement capability. The pressing portion on the driving wheel continuously pushes the cam wheel axially during rotation, enabling the cam wheel to self-correct its position and eliminate dead points without requiring manual intervention, thus maintaining high productivity.
Solution Approach 2:
The axial movement mechanism performs preliminary action by continuously pushing the cam wheel before dead points can form. This preventive mechanism ensures the cam wheel remains in optimal positions throughout rotation, avoiding workflow interruptions and maintaining efficient operation.
3Reliability
If the cam wheel is axially movable, then dead points are prevented, but the structure becomes more complex
Solution Approach 1:
The axial movement function is merged into the cam wheel structure itself through the interaction between the pressing portion on the driving wheel and the pushed portion on the cam wheel. This integration allows the cam wheel to perform both rotation and axial movement functions within a unified structure, preventing dead points without requiring separate complex mechanisms.
Solution Approach 2:
The cam wheel is designed with multi-functionality, serving both as a rotational element and an axially movable element. The same cam wheel structure that performs the sealing function also performs the axial movement to prevent dead points, eliminating the need for additional dedicated mechanisms and reducing overall structural 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
The solution effectively prevents the formation of dead points, enhancing work efficiency by allowing continuous operation without manual intervention, ensuring uninterrupted strapping processes and improved workflow.
Implementation Method 1
The restoring piece is connected with the cam wheel for axially pushing the cam wheel back to its original position when the one end of the swinging piece is moved to be apart from the outer periphery of the cam wheel
Data Source
AI summary
A structure for preventing the formation of a dead point for a cam wheel includes a driving wheel with a pressing portion provided at one side thereof for pushing a pushed portion of the cam wheel. When the cam wheel is moved over a distance while rotating simultaneously, a cam portion of the cam wheel pushes one end of the swinging piece. When the one end of the swinging piece is pushed to be apart from the outer periphery of the cam wheel, a restoring piece axially pushes the cam wheel back to its original position. A strapping device includes the above structure, a housing, a first transmission assembly, a second transmission assembly and a third transmission assembly. Tensioning of a circular strap, rapid friction bonding and cutting are sequentially performed by the transmissions of the first to third assemblies, respectively.