The most feasible forming method for paper bowl-shaped tableware is to perform secondary forming according to the characteristics of the paper, rather than forming a combination of two parts like a paper cup. Although the paper is not as ductile as some metals, it can be drawn and calendered, but it can be folded. According to this, we think that the equal-dividing indentation along the diameter direction is formed on the paperboard die-cut into a disk shape. The purpose of this is to enable the paper to produce small creases along each indentation line when the cardboard is molded by the mold, so as to collect the flat cardboard into a round bowl-shaped tableware. Through the test, the molded cardboard did not produce uniform creases on each indentation line as we expected, but irregularly produced a few large folds and other small folds in some places, and there was no crepe at all. Fold so that the paper bowl-shaped tableware is completely sampled = after passing through the sample, the speed is fast, and the thickness of the paper is uneven, easy to warp and unstable, relying on the indentation can not make it evenly crease, especially the upper mold When the cardboard is pressed into the cavity of the lower die, the outer edge of the cardboard will be irregularly raised. For this reason, we have installed a thin plate to prevent the cardboard from warping. Set the gap on the right. This gap should be slightly larger than the thickness of the cardboard. There is one structure. The mechanism enables the cardboard to be inserted into the gap of the mechanism, and can only move the cardboard laterally and produce small creases along the jade marks during the entire forming process. It is equipped with a spring pressure ring mechanism outside the upper mold. When the upper mold descends, it can follow the mold. The pressure first presses the cardboard placed on the plane of the lower mold, so that the cardboard cannot always warp during the forming and molding process. It can only bend horizontally and produce cattle creases. The agency 2. 1. Lower mold 2. Cardboard feeding flat 3. Cardboard anti-rocking plate 41 Mold 1. Cardboard feeding flat. Face 2. Upper desert 3, spring pressure ring cardboard crying board 5. The lower mold is used, the first method is better, and the paper cups pressed by the bowl-shaped mold with the spring pressure ring mechanism are evenly collected. 1 Crepe folding has good rigidity and beautiful shape, thus effectively solving the difficulty of forming a wide paper bowl-shaped tableware. U999U Shanghai Jiaotong University has successfully developed a large-capacity, energy-saving bullet machine. 3 Joule capacitor energy storage special welding machine and electric control system, recently passed the safety technical appraisal of relevant experts from the Ministry of Transport, and issued a product license to the relevant transportation facility manufacturers that use this welding machine to produce road signs Agree to replace riveting by welding. At present, this welding machine has been put into use. The welding machine is used for thickness, 4 large surface turning quality, 6 spot welding. The firmness of the spot welded joint is about 3 times stronger than that of the nailed joint. 3 The work efficiency is increased by about 10 times, and the labor is greatly reduced. After testing, the welding machine has excellent welding process performance, low impact on the power grid, and innovations in these aspects. It can completely compare with foreign welding machines and reach the international pre-90 level. This has made new contributions to the rapid development of China's transportation electronics industry and ensuring traffic safety. Hair Curved Scissors,Baber Scissors Set,Customized Professional Scissors,Custom Salon Hair Scissors Zhangjiagang Mister Tools Co., Ltd , https://www.msscissors.com