Glue Application Device Vertical Dosing Control
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Solution Overview
Problem
Existing adhesive application devices for edge banding machines face challenges in reliably processing modern adhesives, which can lead to inconsistent application and potential adhesive reaching the top side of the workpiece.
Innovation Solution
The adhesive application device incorporates a rotatable metering sleeve with a dosing slot limiting part mounted on an adjusting piston, allowing precise control of the adhesive application by limiting the opening area of the dosing slot vertically, and a nozzle slot limiting part to prevent adhesive from reaching the top of the workpiece, using a sensing device to detect the workpiece edge for accurate positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dosing sleeve is used to control adhesive application, then adhesive application control is improved, but adhesive may still reach the top side of the workpiece
Solution Approach 1:
The invention divides the adhesive application control into two independent segments: the dosing sleeve controls the opening area of the dosing slot, while the dosing rod with its limiting member controls the vertical position of adhesive application. This segmentation allows each component to specialize in one aspect of control, preventing adhesive from reaching the top side while maintaining reliable application control on the intended surface.
Solution Approach 2:
The limiting member acts as an intermediary element between the dosing rod and the workpiece. It is positioned at a specific height to intercept and prevent adhesive from reaching the top side of the workpiece, while still allowing controlled adhesive application on the intended longitudinal side through the dosing slot.
2Manufacturing precision
If the dosing rod is made displaceable in the longitudinal direction, then vertical positioning control is improved, but device complexity increases
Solution Approach 1:
The dosing rod is designed with dynamic displacement capability in the longitudinal direction, allowing it to move vertically to different positions. This dynamic feature enables precise control over the vertical position of adhesive application by adjusting the dosing rod's location, while the limiting member remains rotatably mounted to maintain its functional integrity throughout the movement.
Data Source
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AI summary
The invention relates to an adhesive application device (10) for an edgebanding machine, comprising a nozzle body (28) having a nozzle channel (30) with a nozzle slot (36) extending in the longitudinal direction of the nozzle channel (30), and further comprising a metering sleeve (38) rotatable in the nozzle channel (30) about its longitudinal axis (40), which has a metering slot (50) that can be positioned in alignment with the nozzle slot (36) and is aligned in the longitudinal direction of the nozzle channel (30). In order to further develop the adhesive application device (10) in such a way that modern adhesives can be processed even more reliably, it is proposed that an actuating piston (56) is mounted vertically displaceable in the metering sleeve (38), on which a metering slot limiting part (62) plunging into the metering slot is rotatably mounted about the longitudinal axis (40) of the nozzle channel (30), which limits the opening area (72) of the metering slot (50) in a vertical direction upwards.