Adjustable Support Rollers for Accurate Timber Dividing
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Solution Overview
Problem
Existing timber body dividing machines face challenges in maintaining dimensional accuracy and preventing timber pieces from tilting or moving transversely during the final stages of the operation, leading to dimensional deviations and potential saw band breakage.
Innovation Solution
The machine features a pair of second support rollers that adjust their mutual distance from an initial width correlating to the real timber body width to a final width minus the total thickness of the first saw band, ensuring precise control and stabilization of timber pieces throughout the dividing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed support rollers are used throughout the timber body dividing operation, then the structure is simple and easy to operate, but dimensional accuracy deteriorates at the end of the operation when timber pieces tilt
Solution Approach 1:
The support rollers are made adjustable in their mutual distance, transforming a static configuration into a dynamic one that can adapt during the timber body dividing operation. The distance between support rollers is variable, allowing the system to maintain optimal contact with the timber body throughout the entire dividing process, preventing tilting and ensuring dimensional accuracy without requiring complex fixed structures
Solution Approach 2:
The key parameter being changed is the mutual distance between support rollers. By varying this distance from an initial value (correlating to the real width of the timber body) to a final value (real width minus total thickness of saw bands), the system maintains proper engagement with the timber body throughout the dividing operation, preventing dimensional deviations while keeping the overall structure relatively simple
2Device complexity
If the mutual distance between second support rollers remains constant at initial width, then the structure is simple, but timber pieces tilt and move transversely at the end of dividing operation
Solution Approach 1:
The support roller system transitions from a static to a dynamic configuration by enabling adjustment of the mutual distance between rollers. This dynamic adjustment allows the system to adapt to the changing geometry of the timber body during dividing, maintaining stability and preventing transverse movement of timber pieces without requiring overly complex mechanisms
Solution Approach 2:
The system performs preliminary positioning of support rollers at an initial mutual distance correlating to the real width of the timber body before the dividing operation begins. This preliminary action ensures proper initial engagement, and subsequent adjustment to a final distance maintains stability throughout the operation, preventing tilting and transverse movement
3Ease of operation
If support rollers engage timber body with fixed distance, then operation is simple, but dimensional deviations occur leading to lower-quality timber pieces
Solution Approach 1:
The mutual distance between support rollers is changed from a fixed parameter to a variable one. By adjusting this parameter from an initial value to a final value during the dividing operation, the system maintains proper engagement with the timber body, ensuring dimensional accuracy and high-quality output while keeping the operational complexity relatively low
Solution Approach 2:
The support roller system incorporates dynamic adjustability, allowing the mutual distance to be modified during operation. This dynamic capability enables the system to compensate for the removal of timber material during dividing, maintaining consistent engagement and dimensional precision without requiring overly complex fixed positioning mechanisms
4Stability of the object's composition
If horizontal support rollers are used to bias outer timber pieces, then transverse movement is controlled during beginning and major part of operation, but tilting motion is amplified at the end of operation
Solution Approach 1:
Rather than using multiple fixed horizontal support rollers that can amplify tilting, the invention employs adjustable support rollers whose mutual distance can be changed. This dynamic adjustment provides the necessary transverse control during the beginning and major part of the operation while preventing tilting at the end, achieving stability with a relatively simpler and more adaptable system
Solution Approach 2:
The mutual distance between support rollers is varied during the dividing operation to maintain optimal control. By changing this parameter, the system provides transverse control when needed while avoiding the tilting amplification problem associated with fixed horizontal rollers, achieving both stability and simplicity
Data Source
AI summary
A machine and a method for controlling such a machine that includes a feeder unit and a sawing station, the feeder unit being located upstream the sawing station. The sawing station includes a first sawing unit including a set of first saw band(s) and a pair of first support rollers, and a second sawing unit including a set of second saw band(s) and a pair of second support rollers, wherein the location of each support roller is adjustable in the transverse direction. The support rollers are configured to engage the timber body. The method is characterized by the steps of feeding the timber body by means of the feeder unit into the sawing station during the timber body dividing operation. The pair of first support rollers engage the timber body, positioning the pair of second support rollers at an initial mutual distance correlating to the real width of the timber body, and decreasing the mutual distance between the pair of second support rollers during the timber body dividing operation until reaching. At the end of the timber body dividing operation, a final mutual distance between the pair of second support rollers correlating to the real width of the timber body minus the total thickness of the set of first saw band(s).