# Enhancing Complex Injection Mold Design Validation Using Multicombined RV Environments
## 1 Introduction  
Plastic injection molding is currently the most widespread plastic transformation process globally, being crucial in the manufacturing of a wide range of consumer products. It is estimated that more than 70% of these products include components produced using this technology [1]. In 2020, the global injection molded plastic market reached USD 265.1 billion, with a forecast annual growth of 4.6% until 2028 [2]. This production process is distinguished by its rigorous specifications, demanding resistant and long-lasting tooling to guarantee the production of high-quality parts in an optimal time. The geometric complexity of plastic parts manufactured using injection molding, with free shapes, clips, bosses and shifters, implies challenges in demoditing, requiring sophisticated mechanical systems composed of multiple pieces of various materials that must function in a synchronized manner [3]. Furthermore, given the high pressure during the process, molds usually divide the cavity into interchangeable parts to avoid deformations in small part details due to bending stresses that would require changing the entire cavity [4]. In the field of plastic part manufacturing, molds play a crucial role, comprising various fixed and movable components [5]. This complexity demands a thorough understanding and detailed examination of both internal and external surfaces within the assembly, which poses challenges in design and review validation. Additionally, manufacturing injectionmolds involves significant costs and lengthy production times, which limit prototyping options before mass production [6]. Validating design injection molds is a critical process that ensures the accuracy and functionality of the mold before widespread use [7]. The globalization of injection mold manufacturing further complicates this issue, as molds are often designed in different countries, requiring comprehensive design reviews to prevent communication breakdowns during production. Furthermore, ensuring there is no interference among mold components is crucial to prevent damage during manufacturing and maintain the quality of the parts [8; 9; 10]. Validation of assembly and disassembly, alongside component arrangement within the mold, is essential to the design and manufacturing process [11]. A poorly designed or difficult-to-disassemble mold can increase injection machine downtime and impede production line efficiency. Ensuring accessible mold components for inspection, maintenance, and repair is vital, especially for critical elements like ejection mechanisms. Improper assembly or layout can increase the risk of premature mold damage or wear, leading to costly downtime and a shortened mold life. Thus, prioritizing accessibility and implementing efficient maintenance procedures are crucial for optimizing mold performance and minimizing production disruptions [12]. Virtual reality (VR) has emerged as a promising tool for revolutionizing the validation process of injection molds [13]. By creating immersive virtual environments that accurately replicate mold operations, VR enables users to visualize and analyze internal components with exceptional precision [14]. It has therefore been decided to share the experience through dissemination channels with access via QR codes. This resource substantially improves the interpretation of the CAD model and its operation. Therefore, different operators will be able to access CAD modelling in an immersive and intuitive way through the aforementioned VR resource for the compression of the mold, identification of problems and facilitation of their information by performing CAD modelling more easily. Moreover, VR provides a safe testing environment, resulting in significant cost and time savings compared to traditional methods [15]. In contrast to the limitations of computer-aided design (CAD) programs, VR offers a more intuitive and dynamic experience. While 2D and 3D CAD on screens have been widely used, they often fall short in functional and ergonomic validation [16].