Lead Cutting Mechanism for Component Insertion Without Lead Bending

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing lead cutting devices in component insertion machines risk bending leads during the cutting process due to the use of two blades, which can cause plastic deformation and excessive force on the component main body.

Innovation Solution

A lead cutting mechanism where the movable blade operates close to or in contact with the fixed blade to cut the lead, minimizing bending by adjusting the lead's position relative to the fixed blade during cutting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If two blades are used to cut the lead while holding the component main body, then the lead can be cut, but the lead may be bent by the operation of the two blades

Engineering Contradiction:

Improvelead cutting precisionVSAvoidlead shape

Core Design Contradiction:

Manufacturing precisionVSShape

Solution Approach 1:

The invention extracts the component main body holding function from the cutting process. Instead of holding the component main body with blades, the system uses a separate component holding device, allowing the blades to focus solely on cutting without causing bending

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention introduces a component holding device as an intermediary between the component and the cutting blades. This holding device securely positions the component main body, enabling precise cutting while preventing lead bending through proper support and positioning

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If the movable blade operates away from the fixed blade, then the cutting mechanism is simpler, but the lead may bend during cutting

Engineering Contradiction:

Improvecutting mechanism complexityVSAvoidlead shape

Core Design Contradiction:

Device complexityVSShape

Solution Approach 1:

The invention replaces the traditional two-blade mechanical cutting system with a blade-to-anvil cutting mechanism. The fixed blade serves as a rigid anvil providing stable support, while the movable blade performs the cutting action, achieving both simplicity and prevention of lead bending

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP3624577B1Component insertion machine and lead cutting method

Publication Date: 2026.01.28 FUJI CORP

Figure 1
Figure 2
Figure 3

AI summary

In a component insertion machine for inserting a component P with a lead into a board, when the lead is cut by lead cutting device 20 having fixed blade 60 and movable blade 62 prior to insertion, the component is moved (ΔX) to a position where the lead approaches or contacts the fixed blade, at which position the movable blade is operated to cut the lead.