The continuous development of information technology has increased the level of automation and informatization in the manufacturing industry, which makes it necessary for companies to effectively monitor their assembly lines. Aiming to visualize the monitoring challenges of the assembly line production process, taking the industrial detonator automatic assembly line as the research object and referring to the digital twin five-dimensional model, a visualization monitoring method that utilizes an assembly line based on a digital twin is proposed. First, the architecture of the assembly line visualization monitoring system based on digital twin is constructed, and its specific operation flow is studied. Then, three key implementation methods, including assembly line virtual entity model construction, data collection in the assembly process and complex equipment error detection, are studied. Finally, a visualization monitoring system for the industrial detonator automatic assembly line is designed and developed, which verifies that the proposed method is effective in the visualization monitoring of the assembly line.

High-speed centrifugal composite spinning is a novel method to fabricate composite nanofiber and has a wide range of applications. Micro-triangle slip is the velocity difference of the spinning solution and the proportion of the polymer in the fiber cross section during centrifugal composite spinning. It affects the morphology and internal structure of composite fibers. Three types of polymer slip in the micro-triangle for centrifugal composite spinning are proposed. Then the movement and force of the spinning solution are analyzed by establishing parametric model in the micro-triangle. The factors affecting the micro-triangle slip of centrifugal composite spinning were studied. The length of the liquid-wall slip is inversely proportional to the viscosity of the adhesion layer, the liquid-liquid slip length is proportional to the rotational speed and the air-liquid slip velocity is related to the air velocity around the jet. Finally, polyamide composite nanofiber is successfully fabricated by centrifugal composite spinning experiment and the morphologies were characterized by scanning electron microscopy. The effect of micro-triangle slip on the morphology of composite nanofiber was verified.

Wide weaving machines traditionally enhance the weaving width by increasing the shuttle’s initial velocity. However, this approach introduces challenges like pronounced equipment vibration, elevated noise levels, heightened energy consumption, and a reduced lifespan. Moreover, its efficacy in significantly widening fabric is constrained. Addressing these concerns, this paper proposes a wide-width warp insertion solution that involves driving the high-temperature superconducting shuttle to achieve high-speed horizontal flight through a traveling magnetic field. The inductive weft insertion system structure of wide weaving machines comprises an insertion guideway with an iron core and wound electromagnetic coils. The shuttle consists of a high-temperature superconducting block and a conductive plate, serving as the driving element. By establishing the equivalent circuit of the weft insertion guideway and the suspended shuttle, the calculation formula for the dynamic driving performance of the weft insertion guideway is obtained. Utilizing a transient 3D magnetic field simulation model, the impact of parameters like the current frequency, shuttle conductive plate thickness, and suspension gap on weft insertion performance is explored. Successful wide-width weft insertion motion is achieved by controlling coil input current parameters. Finally, an experimental platform is constructed to validate the correctness of the weft insertion system structure and simulation model through practical experiments.