Dispenser Modules with Shared Fastening Apertures
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Solution Overview
Problem
Existing dispensers for viscous materials, such as hot melt adhesive, have a wide spacing between application nozzles due to the requirement for large piston areas to generate the necessary actuating forces for quick nozzle needle movement, leading to inefficient material application.
Innovation Solution
The dispenser design incorporates a base body with dispensing modules arranged in series, where each module has recesses forming fastening apertures with adjacent modules, allowing for a single bolt to secure multiple modules, reducing the width of each module and thus the spacing between application nozzles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If large piston areas are used to generate sufficient actuating forces for quick nozzle needle movement, then the actuating force is improved, but the width of the dispensing modules and the distance between application nozzles increases
Solution Approach 1:
Two adjacent dispensing modules share a common fastening aperture formed by recesses from both modules, allowing a single bolt to fasten both modules to the base body. This merging of fastening functions reduces the width required for each individual module while maintaining structural integrity and reducing the distance between application nozzles.
2Reliability
If two screws are used on each side of the cylinder chamber to fasten dispensing modules, then the fastening reliability is improved, but the width of the dispensing modules increases
Solution Approach 1:
The patent combines the fastening functions of two adjacent modules into a single shared fastening aperture. The recesses from both modules form a common aperture that accommodates one bolt, which fastens both modules simultaneously to the base body. This reduces the number of fasteners from two per module to one shared fastener, reducing module width while maintaining fastening reliability through the shared connection.
Solution Approach 2:
The single bolt in the shared fastening aperture serves multiple functions: it fastens both adjacent dispensing modules to the base body simultaneously, and it provides structural support for both modules. This multi-functional approach replaces the need for separate fasteners for each module, reducing overall complexity and dimension.
Data Source
AI summary
A dispenser for applying a viscous material, in particular hot melt adhesive, to a substrate, includes: a base body, and a plurality of dispensing modules arranged side by side in series along a lateral axis of the dispenser and attached to the base body. The dispensing modules each have at least one recess which, together with a recess of an adjacent dispensing module, forms a fastening aperture. In each of the fastening apertures a bolt is seated, the bolt is fastened to the base body and is supported on a side of the dispensing modules facing away from the base body against both dispensing modules forming the respective fastening aperture.