Quick-Release Nozzle Assembly for Tool-Free Screw Feeding

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Solution Overview

Problem

Existing screw feeders require tools for nozzle assembly removal and installation, increasing inconvenience and risking damage to internal components.

Innovation Solution

A screw feeding device with a quick-release assembly featuring a seat body, pushing member, and elastic member, allowing tool-free detachment and reassembly of the nozzle assembly through a sliding mechanism with limiting grooves and fixing pins.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional tool-based assembly and disassembly methods are used for the nozzle assembly, then the connection is secure and reliable, but the operation becomes inconvenient and time-consuming

Engineering Contradiction:
Improveease of nozzle assembly attachmentVSAvoidtime for nozzle assembly attachment
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The quick-release assembly employs a dynamic pushing member that can be manually actuated to move between extended and retracted positions. This dynamic mechanism enables the fixing pins to transition between engaged and disengaged states, allowing rapid attachment and detachment of the nozzle assembly without tools, thus improving ease of operation while reducing time loss.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The elastic member automatically returns the pushing member to its initial position after actuation, and the fixing pins self-align with the grooves on the nozzle assembly housing during attachment. This self-service mechanism eliminates the need for external tools or complex manual manipulation, enabling users to quickly attach or detach the nozzle assembly with simple hand operations.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If traditional tool-based assembly and disassembly methods are used for the nozzle assembly, then the connection is secure, but additional tools must be prepared and carried

Engineering Contradiction:
Improveease of nozzle assembly attachmentVSAvoidcomplexity of assembly system
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The quick-release assembly integrates the pushing member, elastic member, and fixing pins into a compact unit mounted on the screw feeder body. This merged design incorporates all necessary components for tool-free attachment and detachment within the existing device structure, improving ease of operation without significantly increasing overall system complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The fixing pins act as intermediaries between the pushing member and the nozzle assembly housing. When the pushing member is actuated, it moves the fixing pins to disengage from the grooves, enabling detachment. This intermediary mechanism provides a simple yet effective solution that avoids the need for external tools while maintaining secure connection during operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If traditional tool-based assembly methods are used for the nozzle assembly, then the connection is secure, but the risk of damaging internal components increases

Engineering Contradiction:
Improvesecurity of nozzle assembly connectionVSAvoidrisk of component damage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The fixing pins automatically align with and engage the grooves on the nozzle assembly housing when the pushing member is in its initial position. This self-aligning mechanism ensures proper positioning without requiring precise manual alignment or application of excessive force, thereby reducing the risk of damaging internal components while maintaining secure connection.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The elastic member pre-positions the fixing pins in a ready-to-engage state, and the grooves on the nozzle assembly housing are designed to guide the pins into proper alignment during attachment. This preliminary preparation prevents misalignment and reduces the risk of component damage during the attachment process while ensuring reliable connection.

Inventive Principle:
Principle #9Preliminary anti-action

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

Enables intuitive, tool-free operation for quick disassembly and reassembly of the nozzle assembly, enhancing user convenience and reducing the risk of component damage.

Implementation Method 1

the elastic member is compressed and deformed by an inner wall of the limiting groove, thereby causing the fixing pins to move toward each other and disengage from the housing of the screw feeder body

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP4644038A1Screw feeding device
Publication Date: 2025.11.05 BASSO IND CORP
  • EP4644038A1 patent drawingFigure 1
  • EP4644038A1 patent drawingFigure 2
  • EP4644038A1 patent drawingFigure 3

AI summary

The present invention provides a screw feeding device including a nozzle assembly, a quick-release assembly, and a screw feeder body. The quick-release assembly is mounted on the nozzle assembly to allow it to be removably attached to the screw feeder body. The assembly includes a seat body, a pushing member, and an elastic member. The pushing member is movably placed in a sliding slot of the seat body and has a limiting groove with a tapered width. The elastic member is positioned in the limiting groove and has two linkage portions extending wider in the opposite direction. Each linkage portion is provided with a fixing pin, which are elastically positioned within a groove of a housing of the screw feeder body. When the pushing member moves relative to the elastic member, the elastic member deforms, causing the fixing pins to move closer and detach from the screw feeder body.