The Aviation plug 4PIN wooden outer film is a specialized connector solution designed for applications where both reliable electrical performance and distinctive external aesthetics are required. This product combines the functional robustness of a 4‑pin aviation connector with the visual and tactile appeal of a wood‑like outer film. It is produced through a carefully engineered mold system, optimized for PVC plastic material, cold runner flow, and unilateral injection of glue, ensuring repeatable quality over a large production lifecycle.

At its core, the Aviation plug 4PIN wooden outer film is defined by its mold structure and material specifications. The mold belongs to the category of plug mold/wire mold/twisted tooth mold/material saving mold/hot runner system mold. This multi‑classification reflects its versatility and the various design considerations embedded within it. As a plug mold, it is specifically tailored to form the housing and outer geometry of the aviation connector. As a wire mold, it supports channeling and positioning of the wire entry and outlet holes, particularly important given the specified outlet hole size of 4.5 mm. The twisted tooth mold aspect indicates that the design may incorporate thread‑like or twist‑lock structures, often used for securing mating parts or providing strain relief and anti‑pull features in aviation plugs. The “material saving mold” label points to optimized runner and cavity design to reduce material waste, while the reference to a “hot runner system mold” highlights that the mold concept can accommodate or be adapted to more advanced runner systems, even though this particular configuration is a cold runner.

For actual production, the mold is specified with the Material: SKD11, a high‑carbon, high‑chromium tool steel widely used for molds and dies that require excellent wear resistance, dimensional stability, and toughness. The use of SKD11 ensures that the mold can sustain a long operating life and maintain tight tolerances over repeated cycles. This longevity is reflected in the mold lifespan of 300,000 times, meaning the mold is designed to reliably perform up to three hundred thousand injection cycles before major refurbishment or replacement. Such a lifespan is suitable for medium to large production runs of aviation plugs, offering a good balance between tooling investment and unit cost.

The Plastic material: PVC is chosen as the primary molding resin. Polyvinyl chloride offers a useful combination of electrical insulation, weather resistance, and processability. In an aviation plug application, PVC can provide sufficient dielectric strength and flame retardancy when formulated appropriately. It is also compatible with various post‑processing surface treatments. The processing of PVC in this mold uses a channel type: cold runner, which means the molten PVC flows through solidifying runners that are ejected along with the parts and usually need to be separated and, where possible, recycled. Although the mold is conceptually linked to “hot runner system mold” technology, the actual configuration here is cold runner, likely chosen for process simplicity, cost considerations, or compatibility with the production environment.

The gate type: unilateral injection of glue describes a gating strategy where material is injected from one side of the mold. “Glue” in this context refers to the molten PVC. Unilateral injection helps create a predictable flow path, simplifies balancing, and can reduce weld lines in certain geometries. For a 4PIN aviation plug with a wooden outer film, controlling the gate location is critical to avoid visible cosmetic defects on the external surface and to ensure consistent packing around the pin interfaces and wire outlet region. With two cavities sharing a cold runner system, careful design is required to ensure both cavities fill evenly under unilateral injection.

The mold includes two cavities, as specified by the number of mold cavities: two. Having a dual‑cavity mold can significantly increase production efficiency by molding two Aviation plug 4PIN wooden outer film housings per injection cycle. This is particularly beneficial when demand volume is moderate to high, but the tooling size or press capacity does not justify a larger multi‑cavity layout. Two cavities also facilitate easier balancing of flow and cooling compared with higher‑cavity configurations, making it simpler to maintain dimensional consistency and uniform shrinkage across all parts.

In physical terms, the mold is relatively compact, with mold dimensions: 73 mm × 73 mm × 25 mm. This small footprint suggests a precision mold suitable for installation in injection molding machines with limited platen area, and it likely supports rapid heating and cooling cycles. The compact size also implies shorter flow lengths, which can be advantageous when working with PVC, as it can be sensitive to excessive residence time and shear. Efficient heat transfer in a small mold block helps stabilize processing conditions and improve repeatability.

The product design also specifies an outlet hole size of 4.5 mm. This dimension is essential for matching the aviation plug to its intended wire diameter range and for ensuring correct strain relief performance. While the “range of wire diameter” is not explicitly given, the 4.5 mm outlet opening provides a clue that the plug is compatible with small to medium‑diameter cables commonly found in instrumentation, control, and light industrial applications. The mold geometry must hold strict tolerances around this outlet to ensure a reliably tight fit, reducing water or dust ingress and providing effective mechanical support for the cable.

Several mold parameters are intentionally left as “nothing” or not defined, such as mold frame: nothing, chamber: nothing, and draft angle not specified. The absence of a designated mold frame likely indicates that the mold inserts or plates are designed to be mounted into a standard or modular frame system of the injection machine, or that the frame specification is handled separately. The non‑specified chamber suggests that the part does not require a complex multi‑chamber core setup, such as intricate internal cavities beyond those needed for the connector geometry. As for draft angle, while it is not numerically defined in the description, a practical mold for PVC components will almost always incorporate appropriate draft to facilitate ejection and prevent part sticking. For a wooden outer film texture, draft design becomes even more important to avoid scuffing the textured or patterned surfaces during demolding.

Surface finishing is an important aspect of the Aviation plug 4PIN wooden outer film. The surface treatment: screen printing, coating, painting, etc. indicates that multiple post‑molding finishing options are available or anticipated. A wooden outer film effect can be achieved through transfer printing, painting, or applying a patterned coating onto the PVC base. Screen printing can be used to add logos, markings for pin assignments, polarity indicators, or other functional graphics directly on the plug shell. Additional coatings can improve abrasion resistance, UV stability, or provide a more realistic wood grain appearance. The underlying mold surface must therefore be engineered to support strong adhesion of these coatings while maintaining the dimensional accuracy needed for plug mating and sealing.

The design and manufacturing process for this product is supported by Original and 3D images: CR2512047, a reference indicating that full 3D models and original drawing files exist under this identifier. These digital assets are critical for ensuring consistency between design intent and actual production. They enable verification of interfaces such as the 4‑pin arrangement, the geometry of the wooden outer film shell, the internal fit to the cable and any strain relief elements, and the alignment features for plug mating. 3D models also streamline communication between design, tooling, and production teams, and they facilitate simulations of flow, cooling, and warpage during the mold design stage.

Regarding production timing, the delivery time: 45 days provides a clear benchmark from tooling start or order confirmation to mold completion and readiness for sampling or mass production. A 45‑day lead time typically encompasses final design validation, machining of the SKD11 components, heat treatment, precision grinding, EDM operations, assembly, trial molding, and minor corrections. For a compact two‑cavity mold with specific requirements like unilateral injection and controlled outlet hole dimensions, this time frame is aligned with standard industrial practice.

Although some design elements like the precise range of wire diameter and the draft angle are not explicitly detailed, the provided specifications paint a coherent picture of a compact, durable, and functionally optimized mold intended for manufacturing a 4‑pin aviation plug with a distinctive wooden outer film finish. The use of SKD11 ensures long tool life and consistent dimensional control. PVC as the molding material balances electrical insulation performance with surface finish versatility. The cold runner system with unilateral injection provides a straightforward yet effective method of filling the two cavities. The 4.5 mm outlet hole and aviation plug geometry make the product suitable for a range of signal and low‑power applications where aesthetics and reliable connectivity are both important.

In summary, the Aviation plug 4PIN wooden outer film is defined by:

- Product Name: Aviation plug 4PIN wooden outer film  
- Mold type classification: plug mold/wire mold/twisted tooth mold/material saving mold/hot runner system mold  
- Mold material: SKD11  
- Surface treatment options: screen printing, coating, painting, etc.  
- Mold frame: not specified  
- Mold lifespan: 300,000 cycles  
- Chamber: not specified  
- Plastic material: PVC  
- Gate type: unilateral injection of glue  
- Channel type: cold runner  
- Delivery time: 45 days  
- Outlet hole size: 4.5 mm  
- Mold dimensions: 73 mm × 73 mm × 25 mm  
- Number of mold cavities: two  
- Original and 3D images reference: CR2512047  

These characteristics together define a specialized connector solution capable of delivering both technical performance and a unique wooden outer film appearance in demanding usage environments.