Adhesive Coating Assembly with Slit Track for Precision Application
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Solution Overview
Problem
Conventional adhesive coating devices face issues such as interruption of adhesive coating during fast movement, adhesive overflowing during slow movement, low efficiency, low accuracy for complex curves, and a large adhesive dot formation at the starting point, leading to poor coating quality and reliance on operator skill.
Innovation Solution
An adhesive coating device with two connected barrels and a novel adhesive coating assembly featuring a detachable substrate with a slit-shaped adhesive coating track that matches the product's requirements, allowing for one-step formation and precise alignment, along with sealing rings and a blocking plate to prevent overflow and ensure efficient adhesive application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the device moves fast to increase productivity, then the adhesive coating may be interrupted, but if the device moves slowly to ensure continuous coating, then adhesive overflowing occurs
Solution Approach 1:
Instead of moving the adhesive barrels and needles along a track to form the coating pattern, the invention inverts the approach by using a stationary lower substrate with a pre-formed adhesive coating track (slit) that guides the adhesive flow. The adhesive barrels remain fixed in position while the substrate is positioned to align its slit with the required coating pattern, eliminating motion-related coating defects
Solution Approach 2:
The invention introduces an intermediary element - the lower substrate with a pre-formed adhesive coating track (slit) - that acts as a guide for adhesive flow. This intermediary structure allows precise control of adhesive application without requiring precise motion control of the adhesive barrels, resolving the contradiction between speed and quality
2Ease of operation
If the device structure is simple to reduce complexity, then adjustment difficulty increases and operator skill dependency increases, but if the structure is complex to enable easy adjustment, then device complexity increases
Solution Approach 1:
The invention segments the adhesive coating system into distinct functional modules: upper substrate, lower substrate with adhesive coating track, adhesive barrels, and blocking plate. The lower substrate with its pre-formed slit is a detachable component that can be easily replaced or adjusted to match different coating patterns, providing ease of operation without significant structural complexity
Solution Approach 2:
The adhesive coating track (slit) is pre-formed on the lower substrate before the coating process. This preliminary preparation allows the substrate to serve as a ready-to-use template that guides adhesive flow, eliminating the need for complex real-time adjustments during operation and reducing dependency on operator skill
3Manufacturing precision
If the adhesive coating track is formed by device motion to achieve flexibility, then accuracy for complex curves decreases, but if a fixed track is used to improve accuracy, then adaptability to different products decreases
Solution Approach 1:
The lower substrate with the adhesive coating track serves multiple functions: it acts as a support structure, a coating template, and a flow guide. By detaching the coating track definition from the adhesive application mechanism and embedding it in the substrate, the system can be easily adapted to different products by simply changing or repositioning the substrate, achieving both accuracy and versatility
4Manufacturing precision
If adhesive flows freely from the barrel to ensure sufficient coating, then a large adhesive dot forms at the starting point, but if adhesive flow is restricted to prevent overflow, then coating continuity may be interrupted
Solution Approach 1:
The invention applies local quality control by using a blocking plate with selectively positioned openings that restrict adhesive flow only at specific locations (the starting point and areas prone to overflow) while allowing free flow in other areas. This localized flow control prevents large adhesive dots and overflow without interrupting coating continuity, maintaining both quality and efficiency
Data Source
AI summary
An adhesive coating device includes two adhesive barrels, lower ends of the two adhesive barrels are both connected to an adhesive coating assembly. The adhesive coating assembly includes an upper substrate having two mounting holes, lower ports of the two adhesive barrels passing through the two mounting holes respectively; a lower substrate detachably mounted at a lower side of the upper substrate. An adhesive receiving space is formed between the upper substrate and the lower substrate, and an adhesive coating track is provided on the lower substrate at a position corresponding to the adhesive receiving space, the adhesive coating track is a slit extending through an upper side and a lower side of the lower substrate, and the shape and size of the adhesive coating track match with the shape and size of an adhesive coating track required by a product to be coated with adhesive.