Sanding Machine Eccentric Synchronizing Roller Belt Tension
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Solution Overview
Problem
Existing sanding machines for elongated components in the building industry face issues due to low torque transmission from abrasive belts, leading to belt slippage and increased wear, which affects the sanding efficiency and machine performance.
Innovation Solution
The sanding machine incorporates a roller conveyor system with motor-driven transport rollers and a pneumatic cylinder-based shock absorber system, along with a sanding device featuring pulleys and a pushing roller with an eccentric rotation axis, and a synchronizing roller to manage abrasive belt tension and contact pressure, ensuring consistent belt engagement and reduced wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the abrasive belt is used to sand the component, then the sanding function is achieved, but the torque transmitted by the abrasive belt is relatively small causing the abrasive belt to slip on the pushing roller
Solution Approach 1:
A synchronizing roller is introduced as an intermediary element between the abrasive belt and the pushing roller. This synchronizing roller has an axis of rotation that is eccentric with respect to its longitudinal axis, allowing it to periodically vary the contact pressure between the abrasive belt and the pushing roller, thereby improving torque transmission and preventing belt slippage without compromising the sanding function
2Productivity
If the abrasive belt slips on the pushing roller due to small torque, then the sanding process continues, but the abrasive belt experiences relatively great wear
Solution Approach 1:
The synchronizing roller with eccentric axis provides periodic contact pressure variation that cushions the interaction between the abrasive belt and pushing roller. This beforehand cushioning effect prevents excessive wear by reducing slippage and distributing the mechanical stress more evenly across the belt surface, while maintaining continuous sanding operation
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
This configuration enhances the sanding process by maintaining consistent abrasive belt contact and reducing wear, improving the sanding efficiency and extending the machine's operational lifespan.
Implementation Method 1
The sanding device further comprises a synchronizing roller, which is mounted between the pulleys so as to rotate around an axis of rotation, which is eccentric with respect to its longitudinal axis
Implementation Method 2
the torque transmitted by the abrasive belt to the pushing roller is relatively small and causes the abrasive belt to slip on the pushing roller
Data Source
Figure 1a~1b
Figure 2
Figure 3
AI summary
A sanding machine has a feeding device (7), which defines a support surface (A) for at least one component (2) to be sanded and is designed to move the component (2) through at least one sanding unit (12, 13), which is provided with an abrasive belt (59) wound in a ring shape around at least two pulleys (54a), with a pushing roller (60) to move the abrasive belt (59) so as to cause it to come into contact with a side face (6) of the component (2) and with a synchronizing roller, which is arranged in contact with the pushing roller (60) and with at least one pulley (54a) so as to synchronize the rotation speeds of the pushing roller (60) and of the pulley (54a) with one another.