竹片堆叠分离机理分析与粗铣自动送料系统设计

doi:10.11707/j.1001-7488.LYKX20250537

Abstract

Abstract:

Objective: To address the problems of high labor intensity, insufficient feeding continuity, and difficulties in single-strip separation and directional feeding of naturally stacked bamboo strips during rough milling, this study aims to improve the automation level and feeding stability of bamboo processing by designing an automatic sorting and feeding system suitable for bamboo-strip rough milling. Method: Based on the curved structure and surface friction differences of bamboo strips, force analysis models of typical stacking combinations were established to analyze the sliding tendency and separation stability of bamboo strips under different stacking states. A probabilistic model of slot-embedding states was further developed to reveal the interaction between bamboo strip posture distribution and the inclination angle of the lifting chain. On this basis, response surface optimization experiments were carried out by considering the structural parameters of the system to investigate the effects of lifting-chain inclination angle, speed, and bamboo strip size on separation performance. Result: The established regression models showed good fitting performance, and the lifting-chain inclination angle and speed were identified as the main factors affecting bamboo strip separation performance. The optimization results showed that when the lifting-chain inclination angle was 66.13°, the speed was 0.246 m·s^?¹, the bamboo strip width was 29.16 mm, and the length was 1 903.88 mm, the predicted separation rate and separation efficiency were 96.86% and 27.65 strips·min^?¹, respectively. The measured results were basically consistent with the predicted values. The system can realize single-strip separation, outer-inner surface recognition, posture flipping, and continuous feeding of bamboo strips, showing good separation performance and feeding stability. Conclusion: This study has established a mechanical analysis and probabilistic modeling method for the separation behavior of naturally stacked bamboo strips, clarified the effects of key structural and process parameters on separation performance. The designed system provides a theoretical basis and engineering reference for the automated upgrading of bamboo-strip rough milling.

Key words: automatic bamboo strip sorting, stacking-state modeling, separation mechanism, continuous feeding system, response surface optimization

CLC Number:

S777

Tianyu Wang,Yongjie Lei,Bin Zhang,Fei Xiao,Jianhua Yang,Jin Yang,Jianbo Zhou. Analysis of Separation Mechanism of Bamboo Strip Stacks and Design of an Automatic Feeding System for Rough Milling[J]. Scientia Silvae Sinicae, 2026, 62(8): 191-205.

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References 0

	车皓莹, 王玉娇, 孔令凤, 等. 竹青层增强竹材耐候性的作用机制. 北京林业大学学报, 2025, 47 (9): 153- 161.
	Che H Y, Wang Y J, Kong L F, et al. Mechanism of green outer layer in enhancing weathering resistance of bamboo. Journal of Beijing Forestry University, 2025, 47 (9): 153- 161.
	蒋鹏飞, 张　彬, 周建波, 等. 竹片粗铣连续化定向进料系统设计与试验. 林业科学, 2022, 58 (6): 128- 140.
	Jiang P F, Zhang B, Zhou J B, et al. Design and experiment of continuous directional feeding system for bamboo slice milling. Scientia Silvae Sinicae, 2022, 58 (6): 128- 140.
	雷永杰, 蒋鹏飞, 冯海韵, 等. 竹片粗铣用分离输送装置设计与试验. 林业工程学报, 2023, 8 (2): 131- 137. doi: 10.13360/j.issn.2096-1359.202207023
	Lei Y J, Jiang P F, Feng H Y, et al. Development of separation conveyor for rough milling of bamboo pieces. Journal of Forestry Engineering, 2023, 8 (2): 131- 137. doi: 10.13360/j.issn.2096-1359.202207023
	李　能, 陈玉和, 包永洁, 等. 竹片近青面和近黄面表面性能的研究. 南京林业大学学报(自然科学版), 2014, 38 (4): 127- 130. doi: 10.3969/j.issn.1000-2006.2014.04.024
	Li N, Chen Y H, Bao Y J, et al. Study on surface properties of bamboo closed to outer skin and inner skin. Journal of Nanjing Forestry University (Natural Sciences Edition), 2014, 38 (4): 127- 130. doi: 10.3969/j.issn.1000-2006.2014.04.024
	李海涛, 周文静, 吴义强, 等. 不同温度下毛竹抗弯力学性能. 林业科学, 2025, 61 (2): 163- 171. doi: 10.11707/j.1001-7488.LYKX20230459
	Li H T, Zhou W J, Wu Y Q, et al. Bending mechanical properties of Phyllostachys edulis at different temperatures. Scientia Silvae Sinicae, 2025, 61 (2): 163- 171. doi: 10.11707/j.1001-7488.LYKX20230459
	李玉敏, 冯鹏飞. 基于第九次全国森林资源清查的中国竹资源分析. 世界竹藤通讯, 2019, 17 (6): 45- 48. doi: 10.12168/sjzttx.2019.06.010
	Li Y M, Feng P F. Bamboo resources in China based on the ninth national forest inventory data. World Bamboo and Rattan, 2019, 17 (6): 45- 48. doi: 10.12168/sjzttx.2019.06.010
	李政豪, 刁　燕, 史生坤, 等. 基于形态学方法与边缘检测的原竹几何特征识别. 林产工业, 2024, 61 (2): 18- 23. doi: 10.19531/j.issn1001-5299.202402004
	Li Z H, Diao Y, Shi S K, et al. Identification of geometric characteristics of bamboo based on morphological method and edge detection. China Forest Products Industry, 2024, 61 (2): 18- 23. doi: 10.19531/j.issn1001-5299.202402004
	刘延鹤, 雷永杰, 周建波, 等. 竹材自动定段设备的设计与样机试验. 林业工程学报, 2022, 7 (4): 128- 134. doi: 10.13360/j.issn.2096-1359.202101003
	Liu Y H, Lei Y J, Zhou J B, et al. Design and prototype test of bamboo automatic segmentation equipment. Journal of Forestry Engineering, 2022, 7 (4): 128- 134. doi: 10.13360/j.issn.2096-1359.202101003
	卢秋芬. 2019. 基于机器视觉竹条缺陷识别技术研究. 福州: 福建农林大学.
	Lu Q F. 2019. Research on bamboo strip defects recognition technology based on computer vision. Fuzhou: Fujian Agriculture and Forestry University. ［in Chinese］
	马良城, 徐筱茹, 伍希志. 基于改进可变形-端到端目标检测模型的竹片缺陷检测方法. 森林工程, 2025, 41 (2): 349- 359.
	Ma L C, Xu X R, Wu X Z. Defect detection method for bamboo slice based on improved Deformable-DETR. Forest Engineering, 2025, 41 (2): 349- 359.
	牛　晗, 伍希志, 任桂芹, 等. 基于OTSU与CANNY算法的竹片缺陷图像检测. 森林工程, 2022, 38 (6): 75- 81.
	Niu H, Wu X Z, Ren G Q, et al. Image detection of bamboo chip defects based on OTSU and CANNY algorithms. Forest Engineering, 2022, 38 (6): 75- 81.
	彭浩哲. 2024. 粗刨竹条连续化制备技术研究. 南京: 南京林业大学.
	Peng H Z. 2024. Continuous preparation technology of coarse bamboo strips. Nanjing: Nanjing Forestry University. ［in Chinese］
	阮承治, 陈　茜, 陈　旭, 等. 颜色空间直方图相交法的竹条色差分类检测系统研究. 中国农机化学报, 2022, 43 (5): 85- 92. doi: 10.13733/j.jcam.issn.2095-5553.2022.05.013
	Ruan C Z, Chen X, Chen X, et al. Study on bamboo sliver chromatic aberration classification and detection system based on color space histogram intersection method. Journal of Chinese Agricultural Mechanization, 2022, 43 (5): 85- 92. doi: 10.13733/j.jcam.issn.2095-5553.2022.05.013
	王和平. 竹片初加工自动连续化生产工艺的探索与研究. 农业装备与智能技术, 2024 (3): 25- 28. doi: 10.3969/j.issn.1004-3969.2024.03.006
	Wang H P. Exploration and research on automatic continuous production process of bamboo slices initial processing. Agricultural Equipment and Intelligent Technology, 2024 (3): 25- 28. doi: 10.3969/j.issn.1004-3969.2024.03.006
	叶翰舟, 傅金和, 程海涛, 等. 以竹代塑加工技术与产品现状及其市场发展潜力. 林业科学, 2024, 60 (1): 129- 141. doi: 10.11707/j.1001-7488.LYKX20230140
	Ye H Z, Fu J H, Cheng H T, et al. The current status and market development potential of processing technology and products using bamboo as a substitute for plastic. Scientia Silvae Sinicae, 2024, 60 (1): 129- 141. doi: 10.11707/j.1001-7488.LYKX20230140
	杨以春, 李贵强, 陈继飞, 等. 竹产业全链工程技术装备研究现状与展望. 世界竹藤通讯, 2025, 23 (2): 9- 20.
	Yang Y C, Li G Q, Chen J F, et al. Whole-chain engineering technology and equipment for bamboo industry: research status and development outlook. World Bamboo and Rattan, 2025, 23 (2): 9- 20.
	郑洪涛, 范梦娟, 郑兆桐. 中国“以竹代塑”财经政策效应与创新深化路径. 世界竹藤通讯, 2025, 23 (2): 26- 32. doi: 10.12168/sjzttx.2025.02.27.001
	Zheng H T, Fan M J, Zheng Z T. Effect of financial and economic policies for “bamboo as a substitute for plastic” in China and its pathways to deepening innovation. World Bamboo and Rattan, 2025, 23 (2): 26- 32. doi: 10.12168/sjzttx.2025.02.27.001
	Chen L J, Wang K Q, Xie Y H, et al. The segmentation of timber defects based on color and the mathematical morphology. Optik- International Journal for Light and Electron Optics, 2014, 125 (3): 965- 967.
	He L, Chen L, Shao H J, et al. Microstructure and physicochemical properties of the anisotropic moso bamboo (Phyllostachys pubescens) surface. European Journal of Wood and Wood Products, 2022, 80 (2): 277- 288. doi: 10.1007/s00107-021-01750-x
	Hashemnia K, Pourandi S. Study the effect of vibration frequency and amplitude on the quality of fluidization of a vibrated granular flow using discrete element method. Powder Technology, 2018, 327, 335- 345. doi: 10.1016/j.powtec.2017.12.097
	Jafarnia N, Mofidi A. Engineered bamboo for sustainable construction: a systematic review of characterization methods. Sustainability, 2025, 17 (13): 5977. doi: 10.3390/su17135977
	Jakovljević S, Lisjak D. Investigation into the effects of humidity on the mechanical and physical properties of bamboo. Construction and Building Materials, 2019, 194, 386- 396. doi: 10.1016/j.conbuildmat.2018.11.030

技术参数Technical parameter	数值Values
整机尺寸（长×宽×高）Overall dimensions (L×W×H)	2 300 mm×2 000 mm×1 800 mm
机器总功率Total power/kW	3.22
升运链转速Conveyor chain speed/(m·s^?1)	0.1~0.3
升运链倾角Conveyor chain inclination/(°)	30~75
加工竹片长度Processed bamboo strip length/mm	1 500~2 100
加工竹片宽度Processed bamboo strip width/mm	25~35
翻面响应时间Flipping response time/s	≤0.5?
竹片分离率Bamboo strip separation rate (%)	96
竹面识别率Bamboo surface recognition accuracy (%)	98.5
粗铣送料速度Rough milling feed speed/(m·min^?1)	≥52

堆叠状态 Stacking state	接触类型 Contact type	临界倾角差 Critical angle difference （Δθ）	分离性判定 Separability judgment
凹＋凹 Concave + concave	黄?青，面 Yellow-green, surface contact	>0	可分离 Separable
凹＋凸 Concave + convex	黄?黄，线 Yellow-yellow, line contact	>0	可分离 Separable
凸＋凹 Convex + concave	青?青，线 Green-green, line contact	>0	可分离 Separable
凸＋凸 Convex + convex	青?黄，面 Green-yellow, surface contact	≤0	难分离 Difficult to separate

试验因素Experimental factor	水平1 Level 1	水平2 Level 2	水平3 Level 3
升运链倾角Conveyor inclination/(°)	55	65	75
升运链转速Conveyor speed/(m·s^?1)	0.15	0.225	0.30
竹片宽度Bamboo strip width/mm	25	30	35
竹片长度Bamboo strip length/mm	1 700	1 900	2 100

序号 No.	倾角 Inclination angle (θ)/(°)	转速 Conveyor speed (v)/(m·s^?1)	宽度 Strip width (w)/mm	长度 Strip length (l)/mm	分离率 Separation rate (%)	分离效率 Separation efficiency/ (strips·min^?1)
1	75	0.150	30	1 900	82.56	24.00
2	55	0.300	30	1 900	85.35	24.07
3	55	0.225	35	1 900	88.79	25.65
4	75	0.225	25	1 900	89.94	26.79
5	55	0.225	30	2 100	91.44	25.44
6	75	0.225	30	1 700	92.67	25.75
7	65	0.225	35	1 700	94.72	28.00
8	65	0.225	25	1700	95.22	27.34
9	65	0.150	35	1 900	82.91	23.15
10	65	0.150	25	1 900	83.97	24.39
11	65	0.150	30	1 700	84.73	23.60
12	65	0.150	30	2 100	84.26	23.49
13	65	0.225	35	2 100	93.52	26.42
14	65	0.300	30	1 700	87.64	22.90
15	65	0.300	30	2 100	88.53	23.29
16	65	0.300	35	1 900	86.54	23.94
17	65	0.300	25	1 900	87.17	23.66
18	65	0.225	25	2 100	94.20	26.65
19	75	0.225	35	1 900	90.79	24.64
20	55	0.225	25	1 900	89.2	23.77
21	75	0.225	30	2 100	92.05	27.24
22	55	0.225	30	1 700	91.42	25.45
23	75	0.300	30	1 900	86.02	24.43
24	55	0.150	30	1 900	82.00	22.00
25	65	0.225	30	1 900	96.50	26.38
26	65	0.225	30	1 900	97.99	27.37
27	65	0.225	30	1 900	96.71	25.84
28	65	0.225	30	1 900	95.71	27.08
29	65	0.225	30	1 900	97.62	26.59

变异来源Source of variation	F	P	显著性Significance
模型Model	59.75	<0.000 1	***
A	5.09	0.039 0	*
B	217.7	<0.000 1	***
A2	208.4	<0.000 1	***
B2	101.1	<0.000 1	***
C2	42.14	<0.000 1	***
D2	3.64	0.075 7
AC	2.85	0.109 7
失拟差Lack of fit	0.930 1	0.580 4

Analysis of Separation Mechanism of Bamboo Strip Stacks and Design of an Automatic Feeding System for Rough Milling

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变异来源Source of variation	F	P	显著性Significance
模型Model	6.15	0.000 6	**
A	4.93	0.043 4	*
B2	33.53	<0.000 1	***
其余项Remainder terms	< 3	> 0.1
失拟差Lack of fit	2.36	0.211 8