Dual Nozzle Adhesive Applicator for Narrow Slitter-Winders
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Solution Overview
Problem
Existing adhesive application devices in slitter-winders for fiber web machines are not suitable for narrow machines, requiring excessive space and high acceleration speeds, and often rely on multiple support structures and separate nozzles, which complicates the adhesive application process.
Innovation Solution
A device with two adhesive nozzles attached to a single moving element, spaced apart symmetrically across the support structure, allowing for efficient acceleration and reliable adhesive application without the need for additional space, with adhesive supply controlled to alternate between nozzles during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a single support structure is used for adhesive application in narrow machines, then space requirements are reduced, but achieving high acceleration speed becomes difficult
Solution Approach 1:
The support structure is segmented into multiple independent carriers (first carrier and second carrier) that can move separately. Each carrier has its own adhesive nozzle, allowing independent control of their positions and speeds. This segmentation enables the system to achieve high acceleration speeds for adhesive application while maintaining a compact overall structure suitable for narrow machines.
Solution Approach 2:
The carriers are designed to be movable along the support structure rather than being fixed. The first carrier can move relative to the second carrier, and both can move independently along the support structure. This dynamic design allows the system to achieve high acceleration speeds for adhesive application while maintaining a compact structure that reduces space requirements.
2Adaptability or versatility
If multiple separate nozzles are used for adhesive application, then adhesive can be applied to multiple positions, but the device complexity increases
Solution Approach 1:
Multiple adhesive nozzles are merged onto a single movable support structure with multiple carriers. The first carrier with its adhesive nozzle and the second carrier with its adhesive nozzle are both supported by the same support structure, allowing them to move together or independently. This merging approach enables adhesive application to multiple positions while avoiding the complexity of multiple separate support structures.
Solution Approach 2:
The support structure serves multiple functions: it supports both the first carrier and second carrier, provides movement paths for both carriers, and enables adhesive application to multiple positions. This multi-functional design reduces overall device complexity while maintaining versatility in adhesive application coverage.
3Productivity
If high movement speed of adhesive nozzle is used, then adhesive application is efficient, but high acceleration speed is required which complicates the device
Solution Approach 1:
The carriers are designed to be movable along the support structure with independent control. The first carrier can accelerate and decelerate independently of the second carrier, allowing high movement speeds for efficient adhesive application without requiring complex acceleration mechanisms for the entire system. The dynamic design distributes the acceleration requirements across multiple independently controlled carriers.
Solution Approach 2:
The adhesive application system is segmented into multiple independently controlled carriers. Each carrier can be accelerated and controlled separately, which simplifies the acceleration mechanism for each individual carrier while achieving high overall productivity through coordinated operation of multiple carriers.
Data Source
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Figure 3~4
AI summary
The invention relates to a device for applying adhesive in a slitter-winder of a fiber web machine, which slitter-winder comprises an unwinder for unwinding a machine roll, slitter blades for slitting web unwound from the machine roll into partial webs and winder for winding the partial webs into fiber web rolls, which device (30) is fitted to apply adhesive on ends of partial webs for attaching the ends of the partial webs onto the fiber web rolls, which device (30) comprises a support structure (31), a moving element (32) and adhesive nozzles (33, 34). The device (30) comprises two adhesive nozzles (33, 34) that are attached to the same moving element (32) such that the nozzles (33, 34) are spaced apart.