Mold Sliding Surfaces With Embedded Solid Lubricants for Galling Prevention

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The mold components in blow molding apparatuses experience significant wear due to galling, necessitating frequent lubricant application, which is cumbersome and prone to oversight, leading to potential damage.

Innovation Solution

Embedding solid lubricants in the sliding surfaces of mold components to reduce the need for manual lubrication and prevent galling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If lubricant is applied manually to sliding surfaces, then galling can be prevented, but the workload increases and oversight can occur leading to damage

Engineering Contradiction:

Improveprevention of gallingVSAvoidworkload of lubricant application

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The mold components are equipped with solid lubricants embedded in their sliding surfaces, enabling them to self-lubricate during operation. This eliminates the need for manual lubricant application while preventing galling between sliding surfaces of mold components.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Solid lubricants are pre-embedded in the sliding surfaces of mold components during manufacturing. This preliminary action ensures that lubrication is already in place before the mold begins operation, preventing galling without requiring subsequent manual intervention.

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If solid lubricants are embedded in sliding surfaces, then manual lubrication workload is reduced, but manufacturing complexity increases

Engineering Contradiction:

Improveworkload of lubricant applicationVSAvoidmanufacturing of mold components

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

The sliding surfaces of mold components are modified by embedding solid lubricants, changing their surface properties. This allows the mold components to self-lubricate, reducing manual lubrication workload while the embedding process integrates smoothly with existing manufacturing workflows.

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

Reduces the workload of lubricant application and effectively prevents galling, ensuring precise positioning and longevity of mold components.

Implementation Method 1

at least one of a first sliding surface between the neck mold and the first mold and a second sliding surface between the neck mold and the second mold including a solid lubricant embedded therein

Methodology Applied

Scientific EffectSolid lubrication: Lubrication

Data Source

PatentEP4098422B1Mold, blow molding device, and injection molding device

Publication Date: 2025.07.09 NISSEI ASB MASCH CO LTD

Figure 1
Figure 2(a)~2(b)
Figure 3(a)~3(d)

AI summary

A mold includes a first mold for receiving a neck mold that holds a neck part of a resin preform having a bottom, and for enclosing the preform inside, and a second mold inserted into the neck mold. At least one of a first sliding surface between the neck mold and the first mold and a second sliding surface between the neck mold and the second mold includes a solid lubricant embedded therein.