Mineral Wool Separating Device with Pendulum Saw Blades

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Solution Overview

Problem

Existing methods for separating mineral wool into commercially viable sheets are inefficient, with high cycle times and limited precision, particularly when dealing with rock wool due to its less compressible nature and varying density.

Innovation Solution

A device with a synchronous drive and pendulum saw blades that move in a double cycloid curve path, equipped with sensors and servomotors for precise control, and optional use of laser or high-pressure water jets, to ensure quick and reliable cutting with minimal material loss.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a crank-driven pendulum saw or traditional pendulum saw is used for separating mineral wool sheets, then the separation function is achieved, but the cycle time is too long and productivity is low

Engineering Contradiction:
Improvecycle timeVSAvoidseparation time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent replaces traditional mechanical pendulum saw mechanisms with a band saw system driven by a horizontal reciprocating motion mechanism. This substitution eliminates the limitations of crank-driven or rocker-suspended pendulum saws, enabling faster cutting cycles of 43 cuts per minute while maintaining precise control through synchronous drives and servo motors.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent implements dynamic motion control where the band saw blade follows a double cycloid curve path during reciprocation. This dynamic trajectory optimization, controlled by synchronous drives and servo motors, maximizes cutting efficiency and minimizes cycle time compared to fixed mechanical pendulum systems.

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If traditional pendulum saws are used for cutting mineral wool, then separation is achieved, but manufacturing precision and material loss control are insufficient

Engineering Contradiction:
Improvecutting precisionVSAvoidmaterial loss
Core Design Contradiction:
Manufacturing precisionVSLoss of substance

Solution Approach 1:

The patent incorporates sensors that detect the position and status of the band saw blade during operation, providing feedback to the control system. This enables real-time adjustment of the cutting path and speed, ensuring precise cuts along the double cycloid curve and minimizing material waste through optimized blade positioning and synchronous coordination.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The replacement of traditional mechanical pendulum saws with a controlled band saw system enables superior precision in cutting mineral wool sheets. The synchronous drives and servo motors provide accurate positioning control, reducing material loss compared to the less precise traditional mechanical systems.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Power

If hydraulic devices are used to actuate pendulum saws, then cutting power is sufficient, but the system becomes expensive and requires sophisticated controlling operations

Engineering Contradiction:
Improvecutting powerVSAvoidcontrol complexity
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The patent replaces expensive hydraulic actuation systems with a mechanically efficient band saw drive system powered by synchronous motors and servo controls. This substitution maintains sufficient cutting power for mineral wool while dramatically reducing system complexity and control requirements compared to hydraulic pendulum saw actuation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses electrical control signals and sensor feedback to replicate and coordinate the motion of multiple band saw blades, replacing the need for complex hydraulic control systems. The synchronous drives copy the motion pattern across all blades, simplifying control while maintaining power and precision.

Inventive Principle:
Principle #26Copying

Data Source

PatentUS8978531B2Separating device for an assembly line type production line
Publication Date: 2015.03.17 GRENZEBACH MASCHINENBAU GMBH
  • US8978531B2 patent drawing
  • US8978531B2 patent drawing
  • US8978531B2 patent drawing

AI summary

The invention relates to a device for separating insulating materials which were obtained in a continuous production process and are made of mineral wool in determinable lengths, comprising the following features: a) the separation of the material is carried out by means of two separately driven circular saw blades (6) which are suspended like a pendulum; b) the position of the suspension (1) and the drive (2) of the saw blades (6) can be adjusted by means of a carriage (4) in the direction of supply of the material; c) the drive of the carriage (3), the drive of the saw blades (2), the drive of the pendular units (14) and the driving action of the conveyor belt (15) are provided by servomotors; d) a deflection unit (12) causes the lowering of the conveyor belt (15) in the respective area of the saw blades (6); e) the process of material separation is automatically controlled in accordance with the cutting performance of the separating means and the advancement speed of the material supply. The invention also relates to an associated method and a machine-readable support provided with the program code.