Chub Pack Dispensing System with Piercing Nozzle Tip
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Solution Overview
Problem
Existing hand-held material dispensing devices, such as caulking guns, are not capable of controllably dispensing material from chub packs, which are less expensive and easier to manufacture than traditional caulk tubes, due to the lack of a suitable system for piercing and dispensing from flexible packaging.
Innovation Solution
A material dispensing system featuring a nozzle tip with piercing projections that can be removably attached to a housing, allowing the piercing of a chub pack and the controlled dispensing of material through a dispensing end, with a piston rod advancement assembly to push the material out, and a locking mechanism to secure the cover in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional caulk tubes are used with stamp metal plate housing, then the device can dispense material, but the manufacturing cost is high and the structure is complex
Solution Approach 1:
The patent replaces expensive, complex traditional caulk tubes with disposable chub packs made of flexible packaging material. The chub pack is designed as a single-use container that is cheaper to manufacture and dispose of, eliminating the need for durable, complex traditional caulk tube structures while maintaining the dispensing function.
Solution Approach 2:
The patent employs flexible packaging material to create the chub pack container, replacing rigid traditional caulk tube structures. This flexible shell approach simplifies manufacturing, reduces material costs, and enables the chub pack to be easily inserted into and removed from the dispensing device.
2Ease of manufacture
If chub packs are used with traditional caulking guns, then the manufacturing cost is reduced, but the material cannot be controllably dispensed
Solution Approach 1:
The nozzle tip is pre-equipped with piercing projections that automatically pierce the chub pack seal when the chub pack is inserted into the dispensing device. This preliminary piercing action eliminates the need for separate opening steps and enables immediate controlled dispensing, combining the cost benefits of chub packs with the operational control of traditional caulking guns.
3Adaptability or versatility
If piercing projections are added to the nozzle tip, then chub packs can be pierced and material can be dispensed, but the nozzle tip structure becomes more complex
Solution Approach 1:
The patent integrates piercing projections directly into the nozzle tip structure, merging the piercing function with the existing dispensing nozzle. This combination eliminates the need for separate piercing mechanisms while enabling the nozzle tip to perform both piercing and material dispensing functions, thereby increasing adaptability without proportionally increasing complexity.
Data Source
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AI summary
The present invention is a material dispensing system (10) for controllably dispensing material from a packaging such as a chub pack (2). The system can include a housing capable of receiving the packaging, a cover (40) pivotably connected to the housing, at least one nozzle tip (70), and at least one piercing projection (80) capable of piercing the packaging. A packaging compression assembly can be used to compress the packaging toward the piercing projection so that the piercing projection pierces the packaging and allows the material in the packaging to be dispensed from the nozzle tip (70). A locking slide (60) can be included to secure the cover in a closed position.