Blister Pack Sealing Counter-Roller with Cylindrical Format Part
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Solution Overview
Problem
Existing sealing counter-roller arrangements for blister pack production suffer from uneven temperature distribution, cumbersome format changes, and reduced process stability due to non-uniform heat dissipation and concentricity issues, leading to suboptimal sealing quality and increased operational complexity.
Innovation Solution
A sealing counter-roller arrangement featuring a hollow shaft with a continuous, cylindrical format part and a radially acting connecting means, combined with a membrane for hydraulic attachment, ensures uniform thermal coupling and easy format changes, promoting consistent temperature distribution and improved concentricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional format part with non-uniform structure is used, then the device can be manufactured with simpler structure, but uneven temperature distribution occurs leading to reduced sealing quality
Solution Approach 1:
The format part is designed with a hollow cylindrical structure where the wall thickness and internal geometry are optimized to create uniform heat distribution across the sealing surface. The hollow shaft design allows controlled cooling medium flow to specific regions, ensuring uniform temperature distribution while maintaining structural integrity.
Solution Approach 2:
A cooling medium is introduced as an intermediary substance that flows through the hollow shaft and interacts with the format part to remove excess heat. This mediator enables precise temperature control without requiring complex active cooling systems, achieving uniform temperature distribution through fluid-mediated heat transfer.
2Ease of operation
If the format part is detachably connected to the hollow shaft, then format changes become easier, but concentricity issues arise reducing process stability
Solution Approach 1:
The connection between the format part and hollow shaft is designed to be dynamically adjustable. The format part can be quickly attached and detached from the hollow shaft, enabling easy format changes while maintaining precise concentricity through optimized coupling geometry that ensures stable operation during sealing processes.
3Adaptability or versatility
If the hollow shaft has a stepped shape with varying diameters, then different sections can have different functions, but manufacturing complexity increases
Solution Approach 1:
The hollow shaft is divided into distinct sections with varying diameters, where each section serves a specific function. The first section interacts with the format part for sealing, while the second section provides structural support and cooling medium flow paths. This segmentation enables functional versatility while maintaining manufacturability through standard machining processes.
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
This configuration achieves optimized heat transport and distribution, reducing temperature fluctuations, simplifying format changes, and enhancing process stability, resulting in consistent sealing quality and reduced operational complexity.
Implementation Method 1
a device for circulating a cooling medium in the flow channel for cooling at least parts of the format part
Implementation Method 2
device for circulating a cooling medium in the flow channel
Implementation Method 3
a radial gap is formed between the outer lateral surface of the hollow shaft and the cylindrical inner surface of the format part, in which a substantially radially acting connecting element is arranged
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a sealing counter-position arrangement (10), designed and configured in operative connection with a sealing roller for producing a sealed connection between a base film having cup-shaped blister compartments and a top film, comprising a receiving device (15) with a rotatably driven hollow shaft (17) having a flow channel (16), a drive unit (18) for driving the hollow shaft (17), a format part (19) which is at least partially hollow cylindrical, such that it is placed on a free end (20) of the hollow shaft (17), wherein the format part (19) is rotationally fixed and detachably connected to the hollow shaft (17) and has recesses (21) on its outer surface which are designed and configured to receive the blister compartments of the base film.and wherein the receiving device (15) is associated with a device for circulating a cooling medium in the flow channel (16) for cooling at least parts of the format part (19), wherein the device for circulating the cooling medium is preferably connected to the flow channel (16) via a rotary feedthrough (23) at a free end of the hollow shaft (17) opposite the format part (19), which is characterized in that the format part (19) has a hollow cylindrical sleeve shape, such that the radial inner surface of the format part (19) is continuously cylindrical, and that a radial gap is formed between the outer lateral surface of the hollow shaft (17) and the cylindrical inner surface of the format part (19),in which a substantially radially acting connecting element (26) is arranged. The invention further relates to a sealing device with such a sealing counter-position arrangement (10) and to a device for producing blister packs with such a sealing device.