Custom Injection Mould for PP Plastic Mounting Base Plate | 1*2 Double Cavity 738H HRC35-40 Combined Submarine & Side Gate Full Fine Polished Core & Cavity Injection Mould, OEM PP Fixing Plate Custom Molding
1. Product Overview
We supply one-stop customized Injection Mould development and virgin PP mounting plate injection molding service. This radial-rib reinforced square fixing base is produced from high-performance PP raw material, matched with tailor-made Injection Mould fabricated from 738H pre-hardened mold steel with hardness HRC35~40. The Injection Mould is designed as 1×2 dual-cavity layout to produce two finished plastic mounting plates per single injection shot. It adopts combined submarine hidden gate + side gate dual feeding system; both core and cavity undergo precision fine polishing treatment, with product logo pre-etched into cavity for one-step integrated molding. All finished Injection Mould passes strict dimensional & surface QC inspection before delivery to guarantee stable medium-batch mass production of industrial plastic mounting plates.
2. Specification Table
| Item | Detailed Technical Spec |
| Molded Product | PP Radial Rib Square Mounting Base Plate |
| Molding Raw Material | Virgin PP Polypropylene |
| Mold Cavity Layout | 1×2 Double Independent Cavity |
| Core & Cavity Steel | 738H Pre-hardened Mold Steel |
| Steel Hardness | HRC 35~40 |
| Cavity & Core Finish | Full Precision Fine Polished Surface |
| Gating Design | Hybrid Submarine Hidden Gate + Side Gate Runner |
| Cooperation Mode | OEM / ODM Custom Injection Mould + Bulk PP Molding |
![Plastic Mounting Plate Mould]( "Plastic Mounting Plate Mould")
3. Core Advantages
✅ Stable 738H HRC35-40 Injection Mould
738H pre-hardened mold steel owns uniform HRC35-40 hardness, superior machinability and outstanding fine polishing performance without post quenching heat treatment, which effectively shortens mould processing lead time. Fine polished core & cavity eliminates flow lines, sink marks and burrs on PP part surface, greatly lowering defective ratio during continuous PP injection and extending whole Injection Mould service lifespan.
✅ Cost-effective 1×2 Dual-Cavity Layout
Two finished mounting plates formed per molding cycle, balances mould manufacturing cost and production efficiency perfectly, ideal for medium-volume order and new product iterative sample development, efficiently cutting down unit production cost for customers.
✅ Dual Submarine + Side Hybrid Gate Structure
Submarine hidden gate is arranged on the flat outer visible surface of mounting plate; it automatically breaks off during part ejection with no residual gate mark to keep neat appearance. Side gate is set at thick rib & edge position to ensure full plastic filling for distributed mounting holes and radial reinforcing ribs, preventing short-shot or deformation on plate’s fixing structure.
✅ Optimized PP Mounting Plate Structure
Radial radiating reinforcing ribs remarkably improve base compression resistance and structural rigidity; multiple scattered bolt holes facilitate equipment locking installation; central round hole reserves space for shaft/pipeline penetration, the pre-molded integrated corner logo saves secondary silk-screen marking cost. Virgin PP brings excellent chemical resistance and lightweight property for long-term indoor/outdoor assembly usage.
✅ Full Customization Support
We revise base outer dimension, mounting hole spacing, rib layout and engraved logo content on the Injection Mould strictly based on clients’ 2D/3D drawings or physical samples, available to switch raw material to HDPE/ABS after technical assessment.
4. Application Range
Motor & cooling fan bottom fixing mounting base
Household appliance internal structural support plate
Small water pump and automation machinery plastic footing
Pipeline installation engineering fixed backing plate
5. Standard Custom Service Workflow
Client provides 3D drawing or physical mounting plate sample →2. DFM feasibility analysis & Injection Mould structural design →3. CNC precision machining + full fine polishing for 738H core & cavity + logo cavity etching →4. Dual submarine & side gate runner fabrication + mould assembly →5. Virgin PP trial injection & sample confirmation →6. Mass production after customer sample approval
FAQ
Q1: How many molding shots can this 738H Injection Mould sustain?
A: With regular daily maintenance, the HRC35-40 738H Injection Mould can steadily achieve over 430,000 stable molding shots for PP mounting plate continuous production.
Q2: Can we adjust hole size or base outline on finished Injection Mould?
A: Our professional in-house mould workshop can revise replaceable inserts to modify hole pitch and outer dimension as updated design files.
Q3: Can customers get pre-production trial samples before bulk molding?
A: Yes, PP prototype samples will be arranged for your dimension and appearance inspection after mould completion.
Q4: Can this Injection Mould produce HDPE/ABS mounting plate?
A: After injection parameter fine-tuning and runner optimization, compatible with HDPE or ABS material molding upon our technical confirmation.
