Plastic Grid Nine-Leg Pallet Mold — Product Introduction (Motek Pallet Mold Series)
Plastic Grid Nine-Leg Pallet Mold — Product Introduction (Motek Pallet Mold Series)
Product Positioning
Motek introduces dedicated injection molds for grid-top nine-leg single-face plastic pallets. The nine-leg pallet features nine support legs arranged in a rectangular array beneath a grid-patterned deck, combining four-way forklift entry convenience, stacking stability, and relatively low self-weight—widely used in warehousing, logistics, racking, and export transport. Compared with flat-top nine-leg or Chuan-character pallet molds, the core challenges of grid nine-leg pallet molds lie in balanced filling of the nine legs and grid deck, smooth demolding of deep leg structures, and strength assurance at grid rib intersections. Motek configures dedicated solutions around hot runner layout, cooling systems, and demolding mechanisms, helping customers achieve stable mass production of grid nine-leg pallets.
Core Specifications
| Item | Specification |
|---|---|
| Applicable Plastics | HDPE / PP (high-rigidity grades; PP+GF optional for enhanced load capacity) |
| Mold Material | P20 / 718H (cavity and core); 1.2344ESR optional for high-volume production |
| Number of Cavities | 1×1 (single cavity for large pallets) |
| Mold Life | 500,000–1,000,000 shots (depending on steel selection) |
| Cycle Time | Depending on pallet size and cooling design; hot runner solutions can effectively shorten cycles |
| Injection Machine | 800T–2250T (depending on pallet size; large nine-leg pallets reference 2250T) |
| Runner System | Hot runner (multi-point pin gates, balanced filling of nine-leg and grid areas) |
| Ejection Method | Ejector pins / ejector plate with hydraulic ejection |
Product Features
Balanced Filling Control for Nine-Leg and Grid Areas.
The nine support legs of a grid nine-leg pallet are distributed in a rectangular array from the deck, creating significant flow path differences from the center gate to each leg, while the thin-wall characteristics of grid rib areas further increase filling difficulty. Motek adopts a multi-point pin gate hot runner system, configuring gate quantity and positions according to leg and grid rib distribution. Industry experience shows that single-layer pallets typically use 12-point hot runners, while double-layer pallets use 20-point or 24-point hot runners to balance melt distribution and control weld line positions. Mold flow analysis verifies filling completeness at each leg and grid end, preventing short shots or over-packing.
Demolding Optimization for Deep Leg Structures.
The support legs of nine-leg pallets are deep cavity structures prone to scratching from vacuum adhesion or friction during demolding. Motek adopts an ejector pin with hydraulic ejection solution, ensuring ejection force is evenly distributed across leg and deck areas. In mature industry practice, hydraulic cylinder ejection systems provide greater opening force and shorten demolding time. For deep leg areas, air-blow assistance can be coordinated to release vacuum adhesion. Ejector rod alignment slots reference industry patent solutions with conical tops, facilitating precise ejector rod alignment and reducing wear.
Strength Assurance at Grid Rib Intersections.
Grid deck rib intersections are stress concentration areas and high-incidence locations for trapped gas. Motek optimizes fillet transitions at intersections during mold design; industry experience shows that proper fillet design is critical to pallet structural strength. Mold flow analysis is used to evaluate filling end positions at rib intersections, with proper venting inserts arranged to prevent weak points or burning caused by trapped gas.
Interchangeable Inserts for Flat/Grid Pattern Switching.
Some nine-leg pallet products need to accommodate both flat and grid deck patterns. Referencing industry patent solutions, Motek can adopt a removable nine-leg forming insert design: switching between flat and grid patterns by replacing inserts without replacing the entire mold, reducing mold investment for customers producing multiple styles. Insert positioning and locking structures are precision-controlled to ensure accurate cavity alignment after insert changes.
Cooling System and Cycle Time Control.
Grid nine-leg pallets have uneven wall thickness distribution (thick legs, thin grid ribs), and uneven cooling can easily cause warpage. Motek designs zoned cooling circuits covering the deck grid area and leg inserts separately. In mature industry solutions, cooling channels use 16–20mm diameters, with beryllium copper inserts embedded in deep rib areas to accelerate heat dissipation and effectively shorten cycle time.
Mold Steel and Heat Treatment Processes.
For the medium-to-large dimensions of nine-leg pallet molds, Motek references mature industry configurations: P20 (HRC31–33) or 718H for cavity and core. Steels undergo quenching and tempering, quenching, and tempering processes to ensure uniform hardness and sufficient toughness. For high-volume requirements, 1.2344ESR (HRC54) with DLC surface coating can be selected, achieving mold life up to 800,000 shots.
Mold Outer Dimensions Reference
The following table lists grid nine-leg pallet mold dimension data available from search materials for reference. Actual mold dimensions vary depending on product specifications, cavity count, and cooling system design. Motek provides customized solutions based on customer pallet 3D drawings and injection machine specifications.
| Product Specification / Notes | Mold Outer Dimensions (mm) | Applicable Injection Machine | Source Type |
|---|---|---|---|
| Large grid nine-leg pallet | 1900×1650×1284 | 2250T | Mold maker |
| Nine-leg grid pallet (1000×800×140mm) | Customized per product | Customized per product | Mold maker |
Applications
Motek plastic grid nine-leg pallet molds are suitable for:
- Grid nine-leg single-face pallets for warehousing and logistics
- Nine-leg pallets for racking storage (rack load capacity evaluation required)
- Grid nine-leg plastic pallets for export transport
- Nine-leg pallet series with switchable flat/grid patterns
- Standard-size grid nine-leg pallets (1200×1000mm, 1200×800mm, etc.)
Service Process
After the customer provides 3D product drawings, load requirements (dynamic/static), and target output, Motek completes mold flow analysis (including nine-leg and grid area filling evaluation, warpage prediction, and cooling optimization) and mold structure confirmation; cavity steel and hot runner systems are procured according to agreed specifications; progress and key milestones are regularly reported during processing. During trial molding, emphasis is placed on verifying nine-leg filling completeness, grid rib forming quality, demolding smoothness, and load-bearing performance, with samples and inspection reports provided. Before shipment, molds undergo anti-rust treatment and action testing, with water circuit diagrams, hot runner wiring diagrams, consumable parts lists, and maintenance instructions provided. Technical support is available during the warranty period, with lifetime maintenance consultation.
Motek — From grid nine-leg pallets to Chuan-character pallets, providing reliable mold solutions for injection molding of logistics and warehousing plastic pallets.
