Flat Knitting Machine Collision Avoidance via Coupled Drive

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Solution Overview

Problem

Existing flat knitting machines face collisions and hindrances in knitting due to errors in driving the needle bed and bed-like member, leading to inefficiencies in fabric production.

Innovation Solution

A flat knitting machine configuration with dual drive sources and a control unit that allows synchronized movement of needle beds and a bed-like member, preventing collisions by maintaining precise control over their relative positions, and improving the disposability and maintainability of the drive sources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If each bed (needle bed and bed-like member) is individually driven, then the knitting machine can perform complex knitting operations, but errors in driving may cause collision between members or hindrance to knitting

Engineering Contradiction:
Improveknitting operation capabilityVSAvoidcollision avoidance
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent merges the drive systems by coupling the second drive source to both the bed-like member and the needle bed, so that when the first drive source moves the needle bed, the bed-like member moves integrally with it. This integration eliminates independent driving errors that cause collisions while preserving the ability to perform complex knitting operations through coordinated movement of multiple beds

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If the bed-like member is provided to be relatively movable with respect to the needle bed, then the knitting machine can adapt to different knitting patterns, but the relative movable range may cause collision with other members

Engineering Contradiction:
Improveknitting pattern flexibilityVSAvoidcollision with members
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements dynamic control of the relative movement between the bed-like member and needle bed through the coupled drive sources. The system can adjust the relative movable range in real-time based on the knitting pattern requirements, allowing maximum flexibility when needed while preventing collision when the beds are in positions where members are located

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If the second drive source is coupled to the needle bed via the coupling member, then the degree of freedom of disposing position is improved, but the device complexity increases

Engineering Contradiction:
Improvedrive source positioning flexibilityVSAvoidcoupling mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The coupling member serves multiple functions: it couples the second drive source to the needle bed, provides a mounting structure for the second drive source, and enables the integral movement of the bed-like member with the needle bed. This multi-functionality justifies the added complexity by providing positioning flexibility and reducing the need for separate coupling mechanisms

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4471201A1Flat knitting machine
Publication Date: 2024.12.04 SHIMA SEIKI MFG LTD
  • EP4471201A1 patent drawingFigure 1
  • EP4471201A1 patent drawingFigure 2
  • EP4471201A1 patent drawingFigure 3

AI summary

Provided is a flat knitting machine capable of avoiding collision between members due to an error in driving of a needle bed and a bed-like member. Provided is a flat knitting machine (100) including a first drive source (10) that generates a drive force for relatively moving front and back needle beds (110) in a longitudinal direction, a bed-like member (140) provided to be relatively movable with respect to each of the needle beds (110), and a second drive source (30) that generates a drive force for moving the bed-like member (140), in which the second drive source (30) is coupled to each of the needle beds (110), and the control unit (160) is capable of moving each of the needle beds (110) by driving the first drive source (10), is capable of moving the bed-like member (140) integrally with each of the needle beds (110) along with movement of the second drive source (30) along with movement of each of the needle beds (110), and is capable of moving the bed-like member (140) relative to each of the needle beds (110) by driving the second drive source (30).