博客
Air Conditioner Lower Housing Mould
SINO Mould specializes in custom precision injection moulds for air conditioner lower housings, widely suitable for plastic parts such as bottom outer covers, air outlet lower shells and base shields of household wall-mounted air conditioners, cabinet air conditioners, vertical cooling and heating air conditioners, commercial central air conditioners and fresh air equipment. Targeting the core production requirements of air conditioner lower housings including large flat surface, large thin-wall area, multiple buckle assembly positions, zero appearance defects and high assembly accuracy, different from ordinary plastic shell moulds, we carry out special mold flow optimization and structural upgrading for common problems such as large surface shrinkage, buckle cracking, assembly dislocation and corner warpage. Adopting the full-area balanced conformal cooling and side gating submarine injection molding solution, it thoroughly solves industry pain points such as large-area shell deformation, shrinkage depressions, excess burrs and dimensional deviation. The molded products feature smooth and flat surface without weld lines, firm and accurate buckle positions and qualified overall flatness. Compatible with various engineering plastics such as ABS/PP/PS, the mould supports 1/2 cavities customization. Equipped with an integrated automatic mould opening, closing and ejection demoulding structure, it requires no manual trimming, calibration and polishing, perfectly meeting the mass production demands of high-appearance and high-precision air conditioner lower housings for household and commercial use, greatly improving molding efficiency and reducing customers’ manual post-processing and defective product loss costs.
Air Conditioner Lower Housing Mould Specifications
Below are examples of the most common parameters for air conditioner lower housing moild
| Centrifuge Tube Mould Cavity Steel | S136 / DIN 1.2316 / M340 | Recommended Injection Machine | DKM FE Series All-Electric Injection Moulding Machine |
|---|---|---|---|
| Centrifuge Tube Mould Core Steel | S136 / DIN 1.2316 / M340 | Plastic Material | Medical-grade PP |
| Mould Base Standard / Steel | 4Cr13 Pre-hardened Stainless Steel | Ejection System | Stripper |
| Sliders, Inserts, Lifters Steel | High-strength tool steel with surface hardening treatment | Injection Process | High-speed injection, short cycle time, precise temperature control |
| Number of Cavities | 8–64 cavities | Injection Cycle Time | 8–12 seconds |
| Hot Runner System | Fully hot runner system | Mould Manufacturing Lead Time | 40–65 days |
Air Conditioner Lower Housing Mould Core Advantages
- Anti-shrinkage and anti-deformation structure for large-area shells: Optimize the cavity stress and filling path according to the structural characteristics of large flat surface and wide thin-wall area of air conditioner lower housings, solving the problems of large surface depression, central bulge and four-side warpage of traditional moulds. The finished product is flat and smooth with high fitting degree for complete machine assembly.
- Full-area conformal balanced cooling system: Customized surrounding cooling channels fitting the shell outline fully cover the key areas such as product planes, buckles, screw columns and corners, with the full-area temperature difference ≤4℃. The cooling speed is uniform and synchronous, which effectively eliminates dimensional differences and appearance defects of batch products and improves molding stability.
- Traceless submarine gating process: Adopting side submarine gating layout, the gate is hidden inside or at the corner of the product, with no gate marks, flow lines or air lines on the outer surface, requiring no subsequent grinding and repairing, which perfectly meets the high appearance standards of household appliances.
- Precise inclined pin core-pulling structure for buckles: Aiming at the multi-buckle and deep slot structure of products, an independent inclined pin core-pulling mechanism is equipped with synchronous core-pulling and precise positioning. The formed buckles are full and complete without fracture, material shortage or undercut scratch, ensuring the consistency of batch assembly.
- High-precision mirror cavity process: The mould cavity is treated with high-quality steel hardening and high-precision mirror polishing. The mould surface is wear-resistant and non-sticky, not easy to wear and produce carbon deposition during long-term mass production. The finished product has uniform gloss and excellent appearance texture, meeting the supporting needs of high-end air conditioners.
- Pre-CAE mold flow simulation and predictive design: Simulate the whole process of melt filling, exhaust and cooling accurately through mold flow analysis before mould opening, predict defects such as air trapping, weld lines, shrinkage and stress concentration in advance, optimize runners and exhaust structures to achieve qualified results after one mould test, shortening mould delivery and mass production cycle.
- Modular customization and convenient maintenance design: Adopt split inserts and modular molding structure. The appearance surface, assembly position and functional structure can be disassembled and replaced independently. The mould can be modified quickly for product size, appearance shape and structure updates, reducing maintenance costs and shutdown losses. Meanwhile, it supports customized customer LOGO, texture and marking engraving.
