Stamping-Laminating Apparatus with Selective Pause Mechanism

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing stamping-laminating apparatuses for manufacturing motor cores face issues with product accuracy due to bending of core pieces during lamination, leading to degraded flatness and reduced productivity when machining is suspended during discharge of laminated pieces.

Innovation Solution

A stamping-laminating apparatus with a selecting mechanism that allows at least one punching structure to be in a pause state, enabling continuous stamping and lamination while applying lateral and counter pressure, allowing for uninterrupted operation during piece discharge.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the counter pressure applying mechanism is lowered to discharge laminated core pieces, then the discharge function is achieved, but the core pieces being machined do not receive counter pressure causing curvature changes and lowering product accuracy

Engineering Contradiction:
Improvedischarge functionVSAvoidproduct accuracy
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The stamping-laminating apparatus is divided into multiple independent punching structures (first punching structure and second punching structure), each capable of operating autonomously. This segmentation allows one structure to discharge products while the other continues machining with counter pressure applied, resolving the contradiction between discharge function and product accuracy.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

By having multiple punching structures operate in parallel, the system ensures continuous machining action. While one structure is discharging laminated core pieces, the other structure maintains continuous stamping and lamination with counter pressure applied, eliminating interruptions and maintaining product accuracy throughout the operation.

Inventive Principle:
Principle #20Continuity of useful action

2Manufacturing precision

If machining is suspended during discharge of laminated core pieces, then product accuracy is maintained, but productivity is significantly lowered

Engineering Contradiction:
Improveproduct accuracyVSAvoidproductivity
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The apparatus is segmented into multiple punching structures that can operate independently. This allows the system to maintain machining continuity in one structure while performing discharge operations in another, thereby maintaining both product accuracy and productivity simultaneously.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The multiple punching structures enable continuous machining operation without suspension. While one structure completes discharge, the other structure continues stamping and lamination with counter pressure applied, ensuring uninterrupted productive action and maintaining product accuracy.

Inventive Principle:
Principle #20Continuity of useful action

3Ease of manufacture

If lateral pressure is applied to laminate core pieces, then lamination is achieved, but the upper surface becomes concave degrading flatness and product accuracy

Engineering Contradiction:
Improvelamination processVSAvoidflatness
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The counter pressure applying mechanism applies upward counter pressure to the laminated core pieces, counterbalancing the lateral pressure effect that causes concavity. This counter pressure maintains the flatness of the upper surface while still achieving proper lamination, resolving the contradiction between lamination effectiveness and flatness.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

Solution Approach 2:

The system dynamically adjusts and controls multiple pressure parameters simultaneously - lateral pressure for lamination and counter pressure for flatness maintenance. By independently controlling these pressure parameters, the system achieves both effective lamination and maintained flatness, resolving the contradiction between these two requirements.

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

This approach maintains product accuracy and enhances productivity by ensuring continuous operation without suspending machining during discharge, preventing curvature changes in core pieces and optimizing the use of multiple punching structures.

Implementation Method 1

The lateral pressure ring applies lateral pressure to a plurality of core pieces

Methodology Applied
Scientific EffectLateral pressure: Compression

Implementation Method 2

The counter pressure applying mechanism applies, to the stamped pieces, counter pressure toward the punch from the side opposite to the punch

Methodology Applied
Scientific EffectCounter pressure: Compression

Data Source

PatentUS8485238B2Stamping-laminating apparatus and method
Publication Date: 2013.07.16 TOYOTA BOSHOKU KK
  • US8485238B2 patent drawing
  • US8485238B2 patent drawing
  • US8485238B2 patent drawing

AI summary

Punching structures each include a die, a punch that cooperates with the die to stamp a workpiece, a die supporting member that applies lateral pressure to core pieces stamped out from the workpiece, and a counter pressure applying mechanism that applies counter pressure toward the punch to the core pieces from the side opposite to the punch. The punching structures also include selecting mechanisms, respectively. The punching structures laminate core pieces while applying lateral pressure and counter pressure to the core pieces. The punching structures are arranged along the conveyance direction of the workpiece. The selecting mechanisms select one of the punching structures to be put in a pause state, so that one of the punching structures is put in a pause state during a stamping operation of the punching structures.