Rotary Writing Tool Switching for Compact Medication Packaging
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Solution Overview
Problem
The existing package-belt line drawing devices for medication packaging machines are bulky due to multiple writing-tool switching mechanisms, which increases the size of the packaging machine and reduces drawing speed, making them unsuitable for size reduction and efficient operation.
Innovation Solution
A compact package-belt line drawing device with a holding mechanism that rotates to move multiple writing tools and a switching mechanism that uses a rotational driving mechanism and a straight advance driving mechanism to move one writing tool forward and rearward, allowing for easy attachment and removal of writing tools, and a retreat prevention member to prevent package belt deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple writing-tool switching mechanisms are used to hold and switch between coloring tools, then the line drawing device can draw lines with different colors, but the device size increases and drawing speed decreases
Solution Approach 1:
The patent combines multiple writing-tool switching mechanisms into a single integrated switching mechanism that can handle multiple coloring tools. The holding mechanism is designed to hold multiple coloring tools in a compact arrangement, and the switching mechanism switches between them using a unified structure rather than separate mechanisms for each tool, thereby reducing overall device size while maintaining multi-color capability
Solution Approach 2:
The holding mechanism segments the coloring tools into individual holding portions that can be independently positioned and switched. This segmentation allows each coloring tool to be accessed efficiently by the single switching mechanism, reducing the need for complex overlapping mechanisms while maintaining the ability to draw with multiple colors
2Adaptability or versatility
If multiple writing-tool switching mechanisms are used to hold and switch between coloring tools, then the line drawing device can draw lines with different colors, but the drawing speed decreases
Solution Approach 1:
By merging multiple switching mechanisms into one, the patent reduces the time required for switching operations. The single switching mechanism can rapidly switch between coloring tools without the coordination delays inherent in multiple independent mechanisms, thereby maintaining high drawing speed while supporting multi-color line drawing
Solution Approach 2:
The switching mechanism is designed with dynamic positioning capabilities that allow it to quickly and accurately position the required coloring tool at the writing position. This dynamic operation enables rapid switching between colors without significantly reducing drawing speed, supporting both versatility and productivity
3Volume of moving object
If a compact holding mechanism with rotational movement is used to hold multiple writing tools, then the device size is reduced, but the complexity of the switching mechanism increases
Solution Approach 1:
The holding mechanism uses rotational movement around a central axis to position multiple coloring tools. This circular arrangement allows compact packaging of multiple tools while enabling the switching mechanism to access any tool by simple rotational positioning, reducing overall device size without proportionally increasing switching complexity
Solution Approach 2:
The single switching mechanism is designed with universal functionality to handle all coloring tools held in the holding mechanism. Rather than requiring specialized mechanisms for each tool, the unified switching mechanism performs the same switching function for all tools, simplifying the overall system despite the rotational complexity
4Productivity
If the package belt is allowed to move freely during line drawing, then the packaging speed is maintained, but the package belt deforms excessively
Solution Approach 1:
The retreat prevention member is positioned in advance to counteract the backward movement tendency of the package belt during line drawing. By applying preliminary restraining force through the retreat prevention member, the system prevents excessive deformation before it occurs, while the package belt continues to move forward at packaging speed
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 enables a smaller, more efficient package-belt line drawing device that can draw lines with multiple colors quickly and easily, reducing the size of the medication packaging machine and maintaining high packaging speed while preventing excessive package belt deformation.
Implementation Method 1
The rotator circularly moves the holding portions with the rotational movement
Implementation Method 2
urging the holding portions rearward
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Provided is a package-belt line drawing device including writing-tool switching mechanisms fewer than coloring-tool holding portions of a writing-tool holding mechanism, each writing-tool switching mechanism being capable of moving only one coloring tool forward and rearward. A package-belt line drawing device 10 includes a holding mechanism 30 that holds a plurality of writing tools 60, and a switching mechanism 20 that moves any one of the writing tools 60 forward to a line drawing position. The holding mechanism 30 holds a rotator 33 while allowing the rotator 33 to move rotationally, and holds the writing tools 60 while allowing the writing tools 60 to move forward and rearward. The rotator 33 includes a plurality of holding portions 34 that support the writing tools 60, respectively. The rotator 33 circularly moves the holding portions 34 with the rotational movement while urging the holding portions 34 rearward. The switching mechanism 20 includes a rotational driving mechanism 23 to 25 and a straight advance driving mechanism 26 to 28, the rotational driving mechanism 23 to 25 being engaged with the holding mechanism 30 to rotationally move the rotator 33, the straight advance driving mechanism 26 to 28 moving any of the holding portions 34 positioned at an engagement position 11 by the rotational movement forward to the line drawing position.