## 1 Introduction
Moreover, producers usually consider factors such as the high production costs and low prices of grafted seedlings, which means that the mechanical-grafting success rate needs to be more than 95% to produce economic benefits. In terms of grafting materials, open-type grafting clips are not accepted by many Taiwanes farmers, the price of open-type grafting clips being 10 times higher than that of casing-type grafting clips. Moreover, casing-type grafts also have a shorter healing period and can be shipped within 12 days of grafting; some nurseries even shipping within 9 days. For grafted seedlings produced using open-type grafting clips, the delivery period cannot improve upon that of casing-type grafted seedlings, and cultivators may be reluctant to use open-type grafting clips which may leave beveled sections prone to blackening or bacterial infection. Consequently, this study proposed a new model to develop a grafting machine suitable for Taiwanes cultivators. Additionally, a model able to work with multiple seedlings simultaneously could improve the operational efficiency, providing cultivators with sufficient reason to use the proposed casing. Agricultural machinery can be divided into three broad research and development categories\(-\)that is, fully automatic, semiautomatic, and auxiliary equipment [14]. Table 1 shows the current research and development Solanaceae grafting machinery models in various countries, most of which are semiautomated technical systems. The method of operation has the operator supplying seedlings, and the grafting machine performing tasks such as clipping, cutting, and grafting, effectively improving the efficiency of grafting operations. Although fully automatic grafting equipment is available, it can be extremely expensive, and seedlings must be of high uniformity. Moreover, the operating process can be complicated, so it is rarely used domestically. In European countries, such as the Netherlands, the seedling industry is more mature. Due to the stable climate and the cultivation of seedlings in precision greenhouses, the characteristics of seedlings are consistent, and the profitability of working with massive quantities can outweigh the cost of mechanization. Taiwan is a subtropical region with a relatively complex climate, making it more difficult to control the traits of seedlings produced in greenhouses. Moreover, most seedling producers in Taiwan cannot afford high-cost greenhouse equipment and automatic graft ing technology. Producers are more likely to use low-cost and simple-structured auxiliary equipment--as such, the aim of this study is to develop labor-saving machinery that meets the needs of domestic producers. The clamping and cutting arrangement device for Solanaceae scion and stock seedlings is a simple mechanism. Combined with a power source, it can clamp multiple seedlings and be inclined at a fixed angle, making it suitable for different Solanaceae crops, which could improve the automation of grafting operations and improve production efficiency. This study continues the development and application of the clamping and oblique cutting arrangement-type device for Solanaceae panicle stock and seedlings [15], improving the device and collocation structure (detailed), so that the overall device can better meet the needs of Taiwan seedling producers.