油茶嫁接苗无纺布育苗容器开袋条件与力学试验分析

doi:10.11707/j.1001-7488.LYKX20240499

Abstract

Abstract:

Objective: In response to the lack of automatic picking, bagging, and substrate filling functions for non-woven fabric seedling containers in current Camellia oleifera seedling equipment, this study analyzes the bagging conditions and mechanical tests of non-woven fabric seedling containers suitable for C. oleifera grafting seedlings, and provides theoretical basis for the development of related containerization equipment. Method: A literature review was conducted on the non-woven fabric seedling cultivation technology of C. oleifera grafted seedlings. Based on the requirements of automatic bag filling, an M bag non-woven fabric seedling bag with a size and bag type of 100 mm×120 mm was selected. The grabbing experiment of the non-woven fabric seedling bag was carried out, and the needle suction cup was determined as the key component for opening the bag according to the grabbing effect. Based on the integrity of the opening contour of non-woven seedling bags, the opening mechanism analysis is carried out, and the reasonable range of the distance between the suction cup and the bag top and the opening distance is obtained through experiments. Based on the analysis of the force on the suction cup after filling the non-woven seedling bag substrate, a non-woven seedling bag detachment force test platform was built. The bag opening distance, suction cup to bag top distance, and seedling bag specifications were used as experimental factors, and the non-woven seedling bag detachment force was used as the experimental indicator. A multi factor orthogonal experiment was designed, and variance analysis and response surface analysis were conducted using Design-Expert 13 software to explore the optimal combination parameters of factors. Result: During the process of reducing the bag opening distance from 100 mm to 80 mm, the smaller the distance between the suction cup and the bag top, the greater the detachment force of the seedling bag. During the process of increasing the spacing between bag openings from 80 mm to 100 mm, the larger the distance between the suction cup and the top of the bag, the greater the detachment force of the seedling bag. During the process of reducing the spacing between bag openings from 100 mm to 80 mm, the greater the weight of the seedling bag, the greater the detachment force of the seedling bag. During the process of increasing the spacing between opening bags from 80 mm to 100 mm, the smaller the weight of the seedling bag, the smaller the detachment force of the seedling bag. The distance between the suction cup and the top of the bag within the range of 10?20 mm does not significantly affect the detachment force of the seedling bag, while the greater the weight of the seedling bag, the greater the detachment force of the seedling bag. The optimal parameter combination was obtained through optimization using Design-Expert 13 software: bag opening spacing of 80 mm, suction cup to bag top spacing of 15 mm, and seedling bag specification thickness of 35 g·m^?2 (M bag type 100 mm×120 mm non-woven seedling container). Under this combination, the non-woven seedling bag has a maximum detachment force of 97.7 N on the needle suction cup. Conclusion: The greater the detachment force between the non-woven seedling bag and the needle suction cup, the more stable the bag opening effect. According to the experimental results, the maximum detachment force of the seedling bag is obtained when the opening distance is 80 mm, the distance between the suction cup and the bag top is 15 mm, and the size of the seedling bag is 35 g·m^?2 (M bag type 100 mm×120 mm non-woven seedling container). At the same time, the opening contour of the bag is the most complete under this combination. The maximum detachment force of the non-woven seedling bag on the needle suction cup is 97.7 N, which is slightly different from the maximum detachment force of 97.4 N obtained from the verification experiment.

Key words: grafted seedings of Camellia oleifera, non-woven seedling container, bag opening mechanism, mechanical test

CLC Number:

S794.4
TB486

Ran Liu,Jianbo Zhou,Zhenkun Miao,Yu Zhang,Tengfei Li,Zhiru Li,Shi Wang. Analysis of Opening Conditions and Mechanical Tests for Non-Woven Seedling Containers of Camellia oleifera Grafted Seedlings[J]. Scientia Silvae Sinicae, 2025, 61(8): 1-10.

Figures/Tables 17

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吸盘型号 Suction cup model	抓取无纺布育苗袋结果 Results of grabbing non-woven seedling bags	最大抓取质量 Maximum grabbing quality/kg
普通橡胶吸盘Ordinary rubber suction cup	不能抓取Can’t grab	/
非接触伯努利吸盘Noncontact Bernoulli suction cup	成功抓取、不稳定Successfully grabbed and unstable	/
针式吸盘Needle suction cup	成功抓取、稳定Successfully grabbed and stabilized	20

方差来源 Source	均方 Sum of squares	自由度 df	平方和 Mean square	F	P
方程Equation	4 130.71	9	458.97	23.11	0.000 2
A	1 200.50	1	1 200.50	60.44	0.000 1
B	6.13	1	6.13	0.308 3	0.596 0
C	2 346.12	1	2 346.12	118.11	<0.000 1
AB	0.250 0	1	0.250 0	0.012 6	0.213 8
AC	56.25	1	56.25	2.83	0.136 3
BC	4.00	1	4.00	0.201 4	0.367 2
A²	54.57	1	54.57	2.75	0.141 4
B²	3.04	1	3.04	0.153 1	0.707 2
C²	477.57	1	477.57	24.04	0.001 7
残差Residual	139.05	7	19.86
失拟项Lack of fit	48.25	3	16.08	0.708 5	0.595 4
纯误差Pure error	90.80	4	22.70
总和Cor total	4 269.76	16

Analysis of Opening Conditions and Mechanical Tests for Non-Woven Seedling Containers of Camellia oleifera Grafted Seedlings

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编码 Coding	因素Factor
编码 Coding	开袋间距 Bag opening spacing （A）/mm	吸盘与袋顶间距 Distance between suction cup and bag top（B）/mm	育苗袋规格 Seedling bag specification （C）/（g·m^?2）
1	100	20	35
0	90	15	30
-1	80	10	25

试验序号 Experimental serial number	因素Factor			育苗袋脱落力 Dropping force of seedling bag （Y）/N
试验序号 Experimental serial number	开袋间距 Bag opening spacing （A）/mm	吸盘与袋顶间距 Distance between suction cup and bag top （B）/mm	育苗袋规格 Seedling bag specification （C）/（g·m^?2）	育苗袋脱落力 Dropping force of seedling bag （Y）/N
1	80	10	30	71
2	100	10	30	43
3	80	20	30	69
4	100	20	30	40
5	80	15	25	58
6	100	15	35	45
7	80	15	35	97
8	100	15	35	69
9	90	20	25	53
10	90	20	25	50
11	90	10	35	88
12	90	20	35	89
13	90	15	30	56
14	90	15	30	55
15	90	15	30	65
16	90	15	30	60
17	90	15	30	65