Glue Application Device Slit Limiting Member for Edge Banding
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Solution Overview
Problem
Existing adhesive application devices for edge banding machines face challenges in maintaining the mobility of limiting elements due to forces applied in the feed direction, especially when dealing with workpieces of varying thickness, which can impair the displaceability and lead to incomplete or excessive adhesive application.
Innovation Solution
The adhesive application device features a passage slot with a slit-like configuration, allowing the slit limiting member to be positioned at the upper longitudinal edge of the workpiece without protruding, ensuring it is not subjected to forces in the feed direction, and is easily adjustable via manual or sensor-controlled mechanisms to match the workpiece thickness, ensuring even adhesive application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the limiting element is designed to follow the workpiece thickness, then the adhesive application coverage is improved, but the mobility of the limiting element is impaired due to forces in the feed direction
Solution Approach 1:
The limiting element is divided into two functional parts: a followable portion that adapts to workpiece thickness variations and a non-protruding portion that maintains mobility. The slit-like configuration separates the adhesive flow control function from the thickness-following function, allowing each part to optimize its specific role without interfering with the other.
Solution Approach 2:
Different portions of the limiting element have different geometric properties: the upper portion extends into the passage slot to define adhesive coverage, while the lower portion remains non-protruding to maintain mobility. This local differentiation allows the same component to simultaneously achieve precise coverage control and maintain adaptability to thickness variations.
2Manufacturing precision
If the passage is designed as a slit passage, then the adhesive application precision is improved, but the manufacturing complexity increases
Solution Approach 1:
The slit passage configuration merges the adhesive flow channel with the thickness-adjustment mechanism. The passage slot itself serves as both the adhesive dispensing channel and the guide for the limiting element, eliminating the need for separate adjustment mechanisms and reducing overall device complexity.
Solution Approach 2:
The passage slot serves multiple functions: it guides adhesive flow, defines the coverage area, and provides a path for the limiting element to follow thickness variations. This multi-functionality reduces the number of separate components needed, simplifying the overall device while maintaining precision.
3Manufacturing precision
If the limiting element protrudes from the nozzle body, then the adhesive coverage control is improved, but the ease of cleaning decreases
Solution Approach 1:
The protruding portion that defines adhesive coverage is extracted from the main nozzle body structure and integrated into the passage slot configuration. The limiting element's coverage-defining feature is positioned within the passage slot rather than protruding externally, making the nozzle body easier to clean while maintaining precise coverage control.
Solution Approach 2:
The limiting element is nested within the passage slot structure, with the slit-like configuration providing a recessed path. This nesting arrangement allows the coverage-defining portion to be positioned within the nozzle body contours, eliminating external protrusions that would complicate cleaning operations.
Data Source
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AI summary
The adhesive applicator (10) has a slot shaped passage that is formed as a passage slot and a delimitation element that is provided with a slot delimitation part. The slot delimitation part is arranged within the passage slot. The slot delimitation part has an end surface that is positioned in height of upper longitudinal edge (61) of a work piece. The end surface limits an opening area of the passage slot in vertical direction.