Progressive Die Adhesive Spraying for Motor Lamination Bonding

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Solution Overview

Problem

The existing manufacturing processes for motor lamination cores in new energy vehicles face challenges such as failure to produce magnetic characteristics at bonding positions and inefficiencies in adhesive application, leading to suboptimal bonding methods.

Innovation Solution

An automatic adhesive spraying control system is introduced, which includes a nozzle and nozzle fixing plate with a conical hole and spring arrangement, an adhesive supply device with air pressure control, and an elevating drive device. This system ensures precise adhesive application and regulation of adhesive pressure according to different stamping speeds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual adhesive application and lamination fixing is used, then operational flexibility is maintained, but manufacturing efficiency and bonding consistency deteriorate

Engineering Contradiction:
Improvemanufacturing efficiencyVSAvoidoperational flexibility
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The system enables automatic adhesive application through the spraying device that autonomously dispenses adhesive to the iron core sheets during the lamination process, eliminating manual intervention and significantly improving manufacturing efficiency while maintaining consistent bonding quality

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical adhesive application with an automated spraying system that uses controlled adhesive ejection, transforming the operation from labor-intensive manual process to an automated mechanical system that enhances both productivity and bonding consistency

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Manufacturing precision

If adhesive pressure is not controlled, then application simplicity is maintained, but bonding quality and magnetic characteristics deteriorate

Engineering Contradiction:
Improvebonding qualityVSAvoidpressure control system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system incorporates pressure control mechanisms that regulate adhesive ejection pressure to ensure optimal bonding quality, using feedback from the spraying process to maintain consistent adhesive application that produces proper magnetic characteristics at bonding positions

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent controls the pressure parameter of adhesive ejection to optimize bonding quality, adjusting the pressure at which adhesive is sprayed to ensure proper adhesion and magnetic property formation without requiring overly complex control systems

Inventive Principle:
Principle #35Parameter changes

3Reliability

If adhesive is applied without pressure regulation, then system simplicity is maintained, but bonding reliability and magnetic characteristics deteriorate

Engineering Contradiction:
Improvebonding reliabilityVSAvoidair pressure control system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system uses pneumatic pressure control through an air pressure control system that supplies and regulates push air pressure to the adhesive in the adhesive supply device, enabling reliable adhesive application and bonding without excessive system complexity

Inventive Principle:
Principle #29Pneumatics and hydraulics

Solution Approach 2:

The patent regulates the pressure parameter of adhesive ejection through air pressure control, adjusting the push air pressure to ensure proper adhesive bonding reliability and magnetic characteristic formation while maintaining reasonable system complexity

Inventive Principle:
Principle #35Parameter changes

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 system achieves secure and reliable bonding of lamination cores by ensuring accurate adhesive application and pressure control, enhancing the manufacturing efficiency and quality of motor lamination cores in new energy vehicles.

Implementation Method 1

a spring being arranged in the mounting chamber, two ends of the spring being respectively abutted against a bottom of the nozzle and a bottom side wall of the mounting chamber

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

an air pressure control system being mounted on the adhesive supply device, the air pressure control system supplying a push air pressure to an adhesive in the adhesive supply device and regulating a supplied push air pressure

Methodology Applied
Scientific EffectCompressed gas pressure: Pressure Increase

Data Source

PatentUS12303923B2Automatic adhesive spraying control system for progressive die of motor iron core of new energy vehicle
Publication Date: 2025.05.20 NINGBO ZHENYU TECH CO LTD
  • US12303923B2 patent drawing
  • US12303923B2 patent drawing
  • US12303923B2 patent drawing

AI summary

The present invention discloses an automatic adhesive spraying control system for a progressive die of a motor lamination core of a new energy vehicle. During stamping of the progressive die, a nozzle is moved downward under the effect of downward movement of a steel strip, such that a gap is defined between a side wall of a conical head of the nozzle and an inner side wall of a first conical hole of the nozzle. An ejecting hole ejects an adhesive subjected to air pressure regulation, such that different gas pressures can be used for adhesive spots and adhesive channels at different positions.