Bamboo Strip Shaping Device Steam Softening
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Solution Overview
Problem
The natural tubular structure of bamboo with varying curvature radii makes it difficult to process into uniform curved strips, limiting its application and utilization.
Innovation Solution
A bamboo strip shaping device and method involving steam softening and multiple drying processes to achieve crack-free, same-radian shaping of bamboo strips, utilizing an upper and lower fixing plate with steam injection channels, pressing rods, and tension springs to flatten and dry the bamboo strips under controlled pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If bamboo strips are directly shaped without steam softening, then processing time is reduced, but cracking occurs and shaping precision deteriorates
Solution Approach 1:
The patent applies steam softening treatment before shaping to preliminarily prepare the bamboo strips by reducing their mechanical properties and increasing flexibility. This preliminary action prevents cracking during subsequent shaping operations and enables precise curvature formation, directly resolving the contradiction between shaping precision and processing time by preparing the material in advance.
Solution Approach 2:
The patent changes the physical-chemical parameters of bamboo strips through steam softening, specifically reducing mechanical properties (strength, modulus of elasticity) and increasing moisture content. These parameter changes make the bamboo strips more pliable for shaping while preventing cracks, thus achieving both high shaping precision and reasonable processing efficiency.
2Adaptability or versatility
If bamboo strips are shaped with varying curvature radii, then natural bamboo structure is preserved, but application range is limited
Solution Approach 1:
The patent applies local quality by using shaping plates with specific arc-shaped structures that impose uniform curvature radii on the bamboo strips. The shaping plates create localized controlled deformation zones where the bamboo is forced into specific curvature patterns, transforming naturally varying curvature into uniform, standardized shapes suitable for various applications.
Solution Approach 2:
The patent changes the curvature radius parameter of bamboo strips from variable natural values to controlled uniform values through the shaping process. By adjusting the shaping plate geometry and processing parameters, the patent achieves standardized curvature radii that expand the applicability of bamboo products while maintaining the material's natural characteristics.
3Productivity
If bamboo strips are dried quickly after shaping, then productivity is improved, but cracking and deformation occur
Solution Approach 1:
The patent maintains pressing force during the initial drying stage as a preliminary protective action. This continued pressure prevents the bamboo strips from deforming or cracking as they lose moisture and regain stiffness, ensuring product quality while allowing relatively quick drying progression.
Solution Approach 2:
The patent applies continuous pressing force throughout the drying process rather than releasing it prematurely. This continuous action ensures that the shaped bamboo strips maintain their formed curvature while drying, preventing rebound deformation and cracking, thus achieving both high productivity and reliable product quality.
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 method allows for the efficient processing of bamboo strips with specific curvature radii, reducing mechanical properties and achieving flatness without cracking, while minimizing energy consumption and maintaining high efficiency.
Implementation Method 1
subjecting the curved bamboo strips to steam treatment and heating softening treatment
Implementation Method 2
heating softening treatment temperature is 150° C.
Implementation Method 3
the pressing rod is sleeved with a tension spring, an upper end of the tension spring is connected to a lower surface of the limiting plate, and a lower end of the tension spring is connected to an upper surface of the connecting rod
Implementation Method 4
drying for the first time under a maintained pressure
Data Source
AI summary
Disclosed is a bamboo strip shaping method, which includes the following steps: S01: cutting a bamboo tube, and removing inner joints, outer joints and bamboo outer skin; S02: trisecting or quartering the bamboo tube in a longitudinal direction to obtain curved bamboo strips; S03: placing the curved bamboo strips in a bamboo strip shaping device for processing; S04: subjecting the curved bamboo strips to steam treatment and heating softening treatment; S05: pressing and shaping the curved bamboo strips to obtain flattened bamboo strips, and drying for a first time under a maintained pressure; S06: wetting bamboo outer skin surfaces and bamboo inner skin surfaces of the flattened bamboo strips, and drying for a second time; and S07: wetting the bamboo outer skin surfaces and the bamboo inner skin surfaces of the flattened bamboo strips, and drying for a third time.