Hot-Melt Adhesive Nozzle for Stack Stability
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Solution Overview
Problem
Existing methods for increasing static friction between stack units to enhance stability during stacking, such as using double-sided adhesive tape or applying adhesives, lead to difficulties in handling and maintenance, contamination, and increased costs due to complex equipment and inefficient processes.
Innovation Solution
A device with a nozzle arrangement for applying a hot-melt adhesive to increase static friction between stack units, allowing for controlled and cost-effective application without contact, reducing wear and maintenance, and ensuring stable cohesion of the stack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If double-sided adhesive tape is applied to increase static friction between stack units, then stack stability is improved, but handling of stacking units becomes more difficult and requires immediate stacking
Solution Approach 1:
The adhesive is applied to the stack unit before stacking, allowing preliminary preparation of stacking units without immediate stacking requirement. This enables economic assembly of stack layers before stacking while maintaining the ability to increase stability when needed.
Solution Approach 2:
The adhesive's adhesive effect is made controllable through temperature changes. The adhesive can be activated or deactivated based on operational needs, allowing flexible handling during assembly and stable bonding during stacking, resolving the contradiction between ease of handling and stack stability.
2Stability of the object's composition
If adhesive is applied to the top layer of the stack to increase stability, then stack cohesion is improved, but the stacking device gets dirty and stick together
Solution Approach 1:
A protective film is introduced as an intermediary between the adhesive and the external environment. The adhesive is applied between the protective film and the stack unit surface, preventing direct contact with the stacking device while maintaining adhesive functionality when activated.
Solution Approach 2:
The protective film acts as a thin barrier that prevents adhesive contamination of the stacking device while allowing the adhesive to function properly on the stack unit surface. This eliminates the harmful contamination effect while preserving stack cohesion.
3Ease of operation
If hot-melt adhesive is used to increase static friction, then ease of handling is improved, but adhesive effect changes with temperature and causes contamination
Solution Approach 1:
The adhesive is applied in a deactivated state (without adhesive effect) and activated only when needed through temperature changes. This preliminary application allows easy handling during stacking operations while preventing unwanted adhesion to equipment, and activation occurs only at the final stacking stage.
Solution Approach 2:
The adhesive's adhesive effect is controlled by changing the temperature parameter. The adhesive transitions from a non-adhesive state during handling to an adhesive state during stacking, allowing easy handling while preventing contamination, and ensuring proper bonding when needed.
4Device complexity
If adhesive application device and stacking device share the same access from above, then device complexity is reduced, but collision between devices occurs and operation becomes difficult
Solution Approach 1:
The adhesive is applied to the stack unit before the stacking operation begins, allowing the adhesive application to be completed in advance. This eliminates the need for simultaneous operation of adhesive application and stacking devices, preventing collisions while maintaining simple device configuration.
Solution Approach 2:
The adhesive application and stacking operations are separated in time through dynamic control of the adhesive's adhesive effect. The adhesive is deactivated during stacking operations to allow device proximity without collision, and activated after stacking to ensure proper bonding.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides reliable and economical cohesion of stack units, preventing contamination and wear, and allowing for efficient handling and storage by applying the adhesive after units are grouped, ensuring stability even with incomplete or damaged units.
Implementation Method 1
applying a hot-melt adhesive to increase static friction between stack units
Data Source
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AI summary
The device (01) for applying an adhesive friction increasing material on an upper surface batch (02) of a stacking unit (03) of a stack layer (04) to form stack piles, comprises a nozzle assembly (05) provided for applying the adhesive friction increasing material, and a sensor. The nozzle assembly is: provided after grouping the multiple stack units at the stack layer and prior to placing the stack layer in a stack space on the stack; and arranged between a stations, in which the grouping of the stack units takes place at the stack layer. The device (01) for applying an adhesive friction increasing material on an upper surface batch (02) of a stacking unit (03) of a stack layer (04) to form stack piles, comprises a nozzle assembly (05) provided for applying the adhesive friction increasing material, and a sensor. The nozzle assembly is: provided after grouping the multiple stack units at the stack layer and prior to placing the stack layer in a stack space on the stack; and arranged between a stations, in which the grouping of the stack units takes place at the stack layer. A device is arranged for assuming the stack layer produced by grouping the stack units and for hanging up on the stack space of the stack layer. The nozzle assembly is provided above the stack unit of the stack layers so that the application takes place leaving the lower sides of the stack units of the stack layer from the friction increasing unit. The nozzle assembly covers two nozzles. The nozzles are arranged in its vertical and/or horizontal position and/or adjustable in their position with respect to a spatial angle. The sensor is provided for generating a sensor signal as a function of location and/or position of stacking units and/or spaces in the stacking layers for the individual and/or collective control of the vertical and/or horizontal position and/or the situation based on the spatial angle and/or the operation and/or of cutting off the nozzle. An independent claim is included for a method of applying an adhesive friction increasing material on an upper surface batch of a stacking unit of a stack layer.