Telescopic Cable Saw Guard With External Wire Cooling

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Solution Overview

Problem

Conventional wire saws face challenges with cooling efficiency, especially during dry sawing, leading to overheating and increased size due to integrated cooling devices, which complicates handling and safety.

Innovation Solution

A telescopic protective device with collapsible cover elements for the saw wire, allowing for coolant introduction and drying, featuring adjustable length and a system for reusing cooling water, which can be attached between guide devices to maintain compactness and enhance cooling efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a cooling device is integrated into the wire saw, then cooling efficiency is improved, but the wire saw becomes larger and more unwieldy

Engineering Contradiction:
Improvecooling efficiencyVSAvoidwire saw size
Core Design Contradiction:
TemperatureVSVolume of moving object

Solution Approach 1:

The cooling device is extracted from the wire saw structure and implemented as a separate protective device that can be attached between guide devices. This allows the cooling function to be provided without increasing the wire saw's core size, as the cooling system is now an external attachment rather than an integrated component.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The protective device serves multiple functions simultaneously: it provides cooling to the sawing wire, protects the surrounding area from the wire, and can be attached to existing guide devices. This multi-functionality allows cooling to be added without requiring a dedicated single-purpose cooling system that would increase size.

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

2Temperature

If additional wire guides are provided to attach an external cooling device, then cooling function is added, but the wire saw becomes larger and more complex

Engineering Contradiction:
Improvecooling capabilityVSAvoidwire guide quantity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The protective device is designed to attach to existing guide devices in the wire saw system, utilizing the existing structure for mounting purposes. This approach allows the cooling function to be added without requiring additional wire guides, as the protective device can be secured to the guide devices already present in the system.

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

3Adaptability or versatility

If the protective device is made telescopic, then adaptability to different distances is improved, but device complexity increases

Engineering Contradiction:
Improvedistance adjustmentVSAvoidcover element mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The protective device incorporates telescopic cover elements that can be extended or retracted to adapt to different distances between guide devices. This dynamic structure allows the protective device to adjust its length as needed, providing versatility for different installation scenarios while maintaining a relatively simple telescopic mechanism.

Inventive Principle:
Principle #15Dynamics

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 solution provides effective cooling and protection for the saw wire and its surroundings, maintaining a compact design while ensuring efficient cooling and resource conservation, thereby addressing the issues of overheating and size in conventional wire saws.

Implementation Method 1

coolant can be a cooling liquid, such as water, or an air stream for cooling

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 2

cooling the wire can be particularly challenging when dry sawing

Methodology Applied
Scientific EffectConduction: Conduction (thermal)

Data Source

PatentEP4414112A1Protection device for a cable saw and cable saw
Publication Date: 2024.08.14 HILTI AG
  • EP4414112A1 patent drawingFigure 1
  • EP4414112A1 patent drawingFigure 2
  • EP4414112A1 patent drawingFigure 3

AI summary

The present invention relates to a protective device (10) for a wire saw (50), wherein the wire saw (50) comprises a wire drive (52) for a saw wire (62), and wherein the protective device (10) has at least two telescopically collapsible cover elements (12, 14) which form an interior space (16) extending along a wire axis for receiving the saw wire (62). The protective device (10) has at least one connection (18) for introducing a coolant into the interior space of the protective device (10), wherein the coolant can be a cooling liquid, such as water, or an airflow for cooling. In a second aspect, the invention relates to a wire saw (50) with a proposed protective device (10), wherein the protective device (10) can be attached between a first guide device (56) for the saw wire (62) and a second guide device (58) for the saw wire (62).