Design and development of multi-dimensional adaptive soft cigarette packaging forming systemZhang, Ling; Ma, Jiang; Yang, Chengbo; Xu, Xiang; Yang, Sen; Han, Jinjiang; Wang, Jun; Wang, Qingping; Zheng, Mao
doi: 10.1088/1742-6596/3009/1/012033pmid: N/A
In recent years, with the prominence of personalized consumer demand, tobacco industry enterprises in order to meet the market demand, urgently need a flexible intelligent production line for cigarette special-shaped packaging, in order to better achieve the purpose of rapid response to market demand. At present, the packaging of cigarette products of different sizes and specifications in cigarette factories is mainly realized by manual class, which has the problems of low production efficiency and poor product quality consistency. In order to overcome the above problems, this paper aimed at the molding process of small box packaging of cigarette products, using the concept of flexibility, through modular design, developed and produced a set of production systems that can meet the requirements of different sizes and specifications of cigarette product packaging. The packaging forming system includes cigarette group arrangement, inner lining paper forming, inner frame paper forming, trademark paper forming, etc. At the same time, it involves the supply process of auxiliary materials required by various processes. The main innovation of this paper is that it can meet the requirements of various size specifications of cigarette products, and can realize the rapid switching between different size specifications of cigarette products. Through the modular design concept, a set of flexible intelligent manufacturing systems for cigarette-shaped packaging is designed, which realizes the production speed > 10 packets/min, and realizes the rapid switching of different specifications and packaging methods, so as to meet the needs of the group brand in the corresponding market quickly. At the same time, compared with other competing enterprises, it maintains the advantages of shaped and flexible packaging, highlighting the technical strength of the enterprise and reflecting the brand value.
Research on thermal cycling reliability of GaN chip based on micro/nanostructure-assisted nano-silver sintering interconnectionWu, Lei
doi: 10.1088/1742-6596/3009/1/012089pmid: N/A
The high-reliability interconnection of generation semiconductors represented by GaN is of significance for promoting the development of aerospace and 5G/6G communication. Herein, the micro/nanostructure arrays were introduced into the interconnection between the GaN chip and the Al2O3 substrate to reduce the dependence on harsh processing environments. A simulation model of micro/nanostructure-assisted nano-silver sintered GaN chip interconnection was established, and the deformation, stress, and strain behaviours of the entire interconnection structure and nano-silver sintering layer were further analyzed and revealed. The failure lifetime of the nano-silver sintering layer was calculated using a modified Coffin-Manson equation. The results demonstrated that micro/nanostructures within interconnection structures can ensure thermal cycle reliability while reducing the dependence on harsh processing environments.
Mechanical analysis of hydro-bulging process of bimetal clad pipeZhang, Ge; Li, Lanyun; Yan, Chenzhengzhe; Zhao, Zhibo; Yao, Tingzhen
doi: 10.1088/1742-6596/3009/1/012053pmid: N/A
Bimetal clad pipes manufactured by the hydro-bulging technique have the advantages such as good mechanical properties and excellent corrosion resistance. The residual contact pressure on the interface between the inner pipe (i.e., liner pipe) and the outer pipe (i.e., base pipe) is an important technical index to measure the forming quality of the clad pipe and is affected significantly by the bulging pressure. Based on the displacement compatibility condition and the plane strain hypothesis, the relationship between residual contact pressure and bulging pressure is established. In addition, the ranges of the bulging pressure when the base pipe only produces elastic deformation and when the base pipe produces tiny plastic deformation are determined. The comparisons between the analytical value and the experimental results verified that the theoretical analysis in this paper is valid.
Numerical study on vibration mode of a single blade of carbon fiber composite propeller based on laminated structureLi, Ruipin; Shi, Zeyu; Wang, Jinlong
doi: 10.1088/1742-6596/3009/1/012017pmid: N/A
To clear the vibration characteristics of carbon fiber composite propellers, the numerical simulation of vibration modes for composite propeller blades is conducted. This article takes self-designed composite material propeller blades as the research object, establishing a finite element model of a single composite material propeller blade, and a modal simulation of composite material propeller blade is conducted to analyze the natural frequency and deformation distribution characteristics of the blade under different order conditions. The numerical simulation showed that the maximum vibration deformation occurred at the tip of the leaf tip in Orders 1, 3, 5, 7, 9, and 10. In contrast, in Orders 2, 4, and 8, the maximum vibration deformation appeared on both sides of the leaf tip, and the vibration deformation increased gradually from the root to the tip. Under the excitation of sine and cosine loads, the maximum stress of selfdesigned laminated composite propeller blades caused by random vibration appears in the middle of the blade, and the stress caused by cosine excitation is greater than that caused by sine excitation. The results of this study can provide theoretical support for the performance evaluation and engineering application of composite material propellers.
First-principle analysis of phase and mechanical properties of Cu-Zn-Sn alloysYang, Xiaoyu; Zhao, Tianhao; Li, Jinshi; Wang, Ruolan; Kang, Jingjie; Xu, Xihui; Yunxia, Xin
doi: 10.1088/1742-6596/3009/1/012060pmid: N/A
Copper alloy is an important material broadly used in the fields of new-generation information technologies, new energy vehicles, rail transit equipment, aerospace ocean engineering, etc. Tin brass alloy is a kind of material popular in engineering and manufacturing fields. It has good mechanical properties, excellent cold working properties, and can withstand hot rolling and hot extrusion. It is widely used in ships and thermal power plants with high-strength corrosion-resistant condensing pipes. In this paper, the first-principle calculation of the phase diagram of Cu-Zn-Sn alloy and the crystal model of each alloy phase is carried out. The results show that Cu-Zn-Sn alloy mainly contains five compounds: ZnCu, Zn8Cu5, Cu3Sn, Zn3Sn, and Cu6Sn5 phases. Cu6Sn5 phase shows excellent compressive resistance, shear strain resistance, and rigidity in all Cu-Zn-Sn alloy phases, but the anisotropy of the Cu3Sn phase (Orthorhombic) and the Cu6Sn5 phase has a large difference in each index. Therefore, Cu6Sn5 and Cu3Sn phases (Orthorhombic) reduce the mechanical properties of brass alloys.
A high-performance electrochromic Mo-doped WO3 film towards smart windowXiang, Tianzi; Xu, Quanyuan; Liu, Haorui; Lu, Ying
doi: 10.1088/1742-6596/3009/1/012018pmid: N/A
Mo-doped WO3 (Mo@WO3) thin film electrode was prepared through the hydrothermal method with convenient and inexpensive steps. The microstructure and characterization of Mo@WO3 thin film were studied through SEM, XRD, and EDS. The Cyclic voltammetry, Chronocoulometry, Transmission spectrum, and Optical transmittance response were studied by electrochemical workstation and optical fiber spectrometer. The results show that compared with single WO3 film, Mo@WO3 thin film improves the electrochromic properties, which provides a novel idea for electrochromic smart windows.
A magnetic responsive chitosan gel for highly efficient CU (II) adsorptionWang, Ya; He, Junjie; Xiao, Nan; Ma, Yilong; Luo, Xianfu
doi: 10.1088/1742-6596/3009/1/012020pmid: N/A
A magnetic chitosan aerogel adsorbent modified by polyethyleneimine (CS-PEI@Fe3O4) was successfully synthesized through a simple method. Chitosan (CS) was used as the carrier, glutaraldehyde (GA) as the crosslinking agent, and polyethyleneimine (PEI) as the grafting material, while magnetic Fe3O4 particles were incorporated. The CS-PEI@Fe3O4 aerogel was fabricated via freeze-drying. Comprehensive characterization was conducted using SEM, VSM, XRD, FTIR, and TG. The effects of PEI molecular weight, Fe3O4 content, and pH on adsorption performance were investigated. The statistically averaged particle size of the synthesized Fe3O4 was 0.88 μm. The VSM characterization revealed a magnetization intensity of 91.82 emu/g. At the optimal pH of 5, the equilibrium adsorption capacity of PEI-CS for copper (II) ions reached 34.02 mg/g. Kinetic fitting revealed that Cu (II) adsorption by CS-PEI@Fe3O4 adhered to second-order kinetics, and the isothermal data were consistent with the Langmuir model. The adsorption process was predominantly chemical adsorption.
An integrated scheduling genetic algorithm based on process constraint matrix and family definition codingQian, Chao; Zhang, Jianxin
doi: 10.1088/1742-6596/3009/1/012066pmid: N/A
To address the complex product-integrated scheduling problem, an improved genetic algorithm based on process constraint matrix and family definition is proposed. The algorithm features a coding method that accurately represents the processing sequence constraints in the product process tree and introduces a simplified method for defining families and sub-processes. On this basis, a hierarchical relationship matrix is derived from the constraint matrix. To resolve the issue of infeasible solutions arising from crossover and mutation operations, a family-based single-parent genetic improvement algorithm is designed. Experimental results validate the effectiveness of the proposed algorithm.
Manufacturing process generation based on multiple kernel Markov chainSong, Qingming; Shen, Siyuan; Wang, Peiyan
doi: 10.1088/1742-6596/3009/1/012035pmid: N/A
Research on the generation of manufacturing process problems in process design has been conducted, and a method based on multiple kernel Markov chains has been proposed. This method utilizes the sequential logical properties of processing methods in the process to establish a processing method Markov chain and generates subsequent processing methods based on the previous processing methods. The engineering information is introduced into the Markov chain through kernel functions from the aspects of part name, part number, material, and thermal surface treatment requirements. Compared with existing methods, this method fully utilizes historical process outline documents, does not require manual determination of feature expression symbol sets, nor does it require labeled data, effectively avoiding the “knowledge bottleneck” problem. On 2, 360 aircraft sheet metal process manufacturing outline data (including 251 processing methods), the accuracy of the proposed method can reach 0.7963, verifying the effectiveness of the method.
Comparative study of exciton properties in CsSnX3(X=Cl, Br, I) halide perovskite thin filmsLin, Zhonghai; Zeng, Ruiyang; Wang, Pingjian; Wei, Guangfen; Du, Huitian; Yang, Xiaoyan
doi: 10.1088/1742-6596/3009/1/012026pmid: N/A
CsSnX3 (X = Cl, Br, I) inorganic perovskites exhibit excellent stability and optoelectronic properties. This study establishes a quantitative correlation the regulation of their fundamental physical properties by layers. As X-site atoms increase, the lattice becomes constant, and optimized volume grows. The band gap decreases and absorption spectra shift red as layer thickness increases, without altering the direct bandgap nature. Exciton properties are influenced by X atoms and layer number, with the maximum exciton binding energy decreasing and the Bohr radius increasing as the X atom size grows.