Moving Nozzle Crank Drive for High-Speed Die Release Spraying

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Solution Overview

Problem

Existing forming apparatuses face challenges in operating moving nozzles at high speeds while minimizing defects caused by impact during pressing operations, particularly in mechanical interlocking types, and face limitations in speed due to the need for reversing servo motor rotations in servo motor drive types.

Innovation Solution

A release agent spraying device with a motor-driven moving nozzle connected via a crank mechanism that advances and retreats in a direction intersecting the die's movement, allowing synchronized operation with the slide and controlled jetting of the release agent, thereby reducing mechanical impact and enabling high-speed operation without reversing servo motor rotations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a mechanical interlocking type is used to connect the slide and moving nozzle, then the moving nozzle can be driven mechanically, but impact during pressing operations causes defects and damage to the moving nozzle and link mechanism

Engineering Contradiction:

Improvemechanical driving capabilityVSAvoiddefect-free operation

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The invention extracts the moving nozzle from the mechanical interlocking system connecting it to the slide. Instead of being mechanically connected, the moving nozzle is now independently driven by a servo motor, separating it from the impact-prone mechanical link mechanism while maintaining its driving capability

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention replaces the mechanical interlocking drive system with a servo motor drive system. The servo motor independently controls the moving nozzle's advancement and retreat without mechanical connection to the slide, eliminating impact transmission while maintaining precise mechanical driving capability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If a servo motor drive type is used to connect the moving nozzle, then the moving nozzle can be controlled precisely, but the need to reverse servo motor rotations limits operating speed

Engineering Contradiction:

Improveposition control precisionVSAvoidoperating speed

Core Design Contradiction:

Measurement precisionVSSpeed

Solution Approach 1:

The invention makes the moving nozzle's drive system dynamic by using a servo motor that can independently control advancement and retreat motions. The system adapts the motor rotation direction based on operational phase (advancement during die closing, retreat during die opening) rather than requiring continuous reversal, enabling high-speed operation while maintaining precise position control

Inventive Principle:

Principle #15Dynamics

3Productivity

If the moving nozzle operates at high speed, then productivity increases, but mechanical impact during pressing operations causes defects

Engineering Contradiction:

Improveoperating speedVSAvoiddefect-free operation

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The invention extracts the moving nozzle from the impact-generating mechanical interlocking system, allowing it to operate at high speeds independently of the slide's mechanical constraints. The servo motor drive enables high-speed advancement and retreat without transmitting impact forces to the nozzle

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention replaces the impact-prone mechanical interlocking system with a servo motor drive system that enables high-speed operation. The independent motor control allows the moving nozzle to advance and retreat rapidly without mechanical impact, simultaneously improving productivity and reliability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 allows for high-speed operation of the moving nozzle while suppressing defects from pressing impacts and enabling efficient release agent spraying, suitable for large-scale press apparatuses, with reduced mechanical load and spraying irregularities.

Implementation Method 1

a motor 34, a moving nozzle 31 that advances and retreats in a direction intersecting a moving direction of a die 12 and jets a release agent from a tip 31a, and a link mechanism C that connects the servo motor 34 to the moving nozzle 31 and advances and retreats the moving nozzle 31 by a rotation output of the servo motor 34 in one direction

Methodology Applied

Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Implementation Method 2

a moving nozzle 31 that advances and retreats in a direction intersecting a moving direction of the die 12 and jets a release agent from a tip 31a

Methodology Applied

Scientific EffectFluid jetting: Jet

Data Source

PatentUS11633751B2Release agent spraying device and forming apparatus

Publication Date: 2023.04.25 SUMITOMO HEAVY IND LTD

AI summary

A release agent spraying device that sprays a release agent to a die of a forming apparatus main body, the release agent spraying device includes a motor, a moving nozzle that advances and retreats in a direction intersecting a moving direction of the die and jets the release agent from a tip, and a connection mechanism that connects the motor to the moving nozzle and advances and retreats the moving nozzle by a rotation output of the motor in one direction.