Cup Sealing Assembly Cooling Slots and Segmented Housing
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Solution Overview
Problem
Packaging machine components, such as heating elements and force-absorbing springs, face fatigue and lack of strength or ductility at elevated temperatures, limiting the speed and efficiency of cup and lid sealing processes.
Innovation Solution
A cup sealing assembly with a specific configuration including a lower and upper housing member, a heater plate, and a heating element, featuring cooling slots and strategically positioned fasteners and materials like 304 and 440C stainless steel, which minimizes heat transfer and maintains structural integrity at high temperatures and forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the temperature of heating elements is increased to improve sealing speed, then productivity increases, but the heating elements and force-absorbing springs are subject to fatigue and lack of strength at elevated temperatures
Solution Approach 1:
The housing is divided into multiple segments including a first housing portion and a second housing portion, allowing the structure to accommodate thermal expansion and reduce stress concentration at elevated temperatures, thereby maintaining component reliability while enabling higher sealing speeds
Solution Approach 2:
Different regions of the housing are designed with different properties - the first housing portion contains cooling channels for thermal management, while the second housing portion provides structural support and force absorption, allowing each region to optimize its function for both high-temperature operation and mechanical durability
2Productivity
If the temperature of heating elements is increased to improve sealing speed, then productivity increases, but components lack adequate strength and ductility at elevated temperatures
Solution Approach 1:
The housing incorporates cooling channels that modify the thermal parameters of the system, creating a temperature gradient that maintains adequate strength in structural regions while allowing the heating elements to operate at higher temperatures for improved sealing speed
Solution Approach 2:
The housing design combines materials with different thermal and mechanical properties - using materials that provide both thermal resistance for strength maintenance and thermal conductivity for heat dissipation, enabling the system to operate at elevated temperatures without compromising component strength
3Productivity
If the temperature of heating elements is increased to improve sealing speed, then productivity increases, but force-absorbing springs are subject to fatigue at elevated temperatures
Solution Approach 1:
The housing is segmented to separate the thermal management functions from the mechanical force absorption functions, allowing springs to operate in a cooler region while heating elements operate at higher temperatures, thereby extending spring life while maintaining high sealing speed
Solution Approach 2:
Cooling channels act as an intermediary thermal management system that removes heat from critical components like force-absorbing springs, reducing their operating temperature and fatigue exposure while allowing the heating elements to maintain high temperatures for improved sealing 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
Enables increased throughput and robust operation at temperatures exceeding 350°F, with the assembly's design and materials ensuring adequate strength and durability, facilitating continuous high-temperature operation while reducing heat transfer to sensitive components.
Implementation Method 1
a heating element engages the upper surface of the heater plate
Implementation Method 2
A plurality of cooling slots extend through the lower wall providing ingress into the cavity
Data Source
AI summary
A cup sealing assembly comprising a lower housing member, an upper housing member, a lower housing plate, a heater plate, and a heating element. The lower housing member has a lower wall. A central wall extends across the lower wall. A cooling slot is defined in the lower wall. The upper housing member has an upper wall and an upper transverse wall, and is positioned on the central wall. A pair of cooling slots is defined in the upper wall in a vertical orientation. The lower housing plate is positioned at a lower end of the lower housing member. The heater plate has an outer rim from its lower surface. The heating element is sandwiched between the heater plate and the lower housing plate. The heater plate fastener couples the lower housing member to the heater plate. An assembly having multiple cup sealing assemblies is disclosed.