Self-Cleaning Chain Wedges for Ornamental Stone Cutting
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Solution Overview
Problem
Conventional ornamental stones chain cutting machines face issues with sludge accumulation and hardening, leading to chain instability, vibrations, and damage due to the inability to prevent debris entry and compaction, resulting in reduced productivity and maintenance challenges.
Innovation Solution
The introduction of push and lateral ejection wedges on the outer links, which cyclically press and eject material from the inner link recesses, utilizing the chain's rotational motion to break and expel hardened sludge, maintaining chain alignment and preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional chain design without ejection means is used, then device complexity is reduced, but sludge accumulation and hardening occurs leading to chain instability and vibrations
Solution Approach 1:
The chain structure uses its own rotational motion to drive the wedges that eject sludge from the recesses. The wedges are positioned on the outer links and automatically contact and push material away from inner link recesses during normal chain rotation, making the cleaning function self-powered and integrated into the existing chain movement without requiring external cleaning mechanisms
Solution Approach 2:
The outer links are divided into multiple components including lateral parts and intermediate parts that can be assembled separately. The wedges are integrated into these segmented outer link components, allowing for modular manufacturing and assembly while maintaining the self-cleaning function throughout the chain structure
2Reliability
If push and lateral ejection means are added to prevent sludge accumulation, then chain stability is improved, but device complexity increases
Solution Approach 1:
The ejection wedges are merged with the outer link structure itself rather than being separate components. The lateral and intermediate parts of the outer links are designed to incorporate the wedge geometry directly, combining the structural function of the link with the cleaning function of the wedge in a single integrated component
Solution Approach 2:
The chain structure uses its own rotational motion to drive the wedges that eject sludge from the recesses. The wedges are positioned on the outer links and automatically contact and push material away from inner link recesses during normal chain rotation, making the cleaning function self-powered and integrated into the existing chain movement without requiring external cleaning mechanisms
3Productivity
If sludge is allowed to accumulate in inner link recesses, then device complexity is reduced, but productivity decreases due to chain damage and maintenance requirements
Solution Approach 1:
The chain structure uses its own rotational motion to drive the wedges that eject sludge from the recesses. The wedges are positioned on the outer links and automatically contact and push material away from inner link recesses during normal chain rotation, making the cleaning function self-powered and integrated into the existing chain movement without requiring external cleaning mechanisms
Solution Approach 2:
The wedges are positioned to contact and push material away from the recesses before the material can accumulate and harden to problematic levels. This preliminary ejection action prevents sludge buildup that would otherwise lead to chain instability and require maintenance interruptions
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 self-cleaning mechanism effectively prevents sludge accumulation and hardening, ensuring stable operation, reducing vibrations and damage, and maintaining chain integrity without increasing production costs.
Implementation Method 1
Each of said lateral parts (3a, 3c) comprises a wedge-shaped pushing element (12) for pushing and ejecting material generated from the cutting of the ornamental stone
Implementation Method 2
utilizing the chain's rotational motion to break and expel hardened sludge
Data Source
Figure 1~2
Figure 3(a)~4(b)
Figure 5~7
AI summary
Cutting chain for ornamental stones chain cutting machines, comprising a plurality of inner (2) and outer (1) links alternating with respect to each other, the outer links (1) being of the modular type, in two or three pieces. Around the articulation between the links (1, 2), an interspace (8) is formed which is narrow enough to prevent the entry of the material generated by the cutting, which could cause the articulation to jam. Close to such interspace (8), a projection (10) of the outer link (1) is provided to avoid the free rotation of the chain in the direction opposite to its natural curvature around the drive pinion. In order to prevent vibrations of the chain, poor machining, deformation of links, or even the breaking of the chain, even in the long-term, means are provided for pushing and ejecting the material generated by the cutting, in a position adjacent to the inlet of the interspace. Such means will form wedges (12) which crush the material with an action concentrated at the tip and above all they push it laterally even if it had hardened during the period the chain was inoperative, and in any case the action of the wedges (12) is cyclic and automatic given that it draws advantage from the cyclic rotary motion between the links of the chain during the operation of the chain cutting machine. Thus, the chain becomes a self-cleaning chain. Preferably, the wedges (12) are arranged under the projections (10) of the outer link.