Agricultural Harvest Basket Moulds
Agricultural harvest baskets endure severe mechanical stresses: heavy stacking loads, UV exposure, field sorting impacts, and high-pressure industrial washing. Manufacturing these containers demands molds featuring balanced material flow, robust ejection mechanics, and precise thermal regulation.
Engineered for injection presses ranging from 500T to 1200T, our molds focus on structural rigidity, uniform wall-thickness distribution to eliminate sinking or warpage, and optimized cooling layouts that shorten cycle times for high-volume production lines.
Product Specifications
|
Technical Parameter |
Specification Range |
Engineering Standard |
|
Applicable Raw Material |
HDPE, PP (with/without UV additives) |
Melt Flow Index (MFI) 2–12 g/10min |
|
Mold Base Material |
S50C, P20, 45# |
LKM / HASCO Standard Plate Tolerances |
|
Cavity & Core Steel |
DIN 1.2738, DIN 1.1730, H13, 718H |
Pre-hardened HRC 32–38; Optional vacuum quenching to HRC 48–52 |
|
Injection System |
Hot Runner / Cold Runner |
YUDO, Synventive, or customer-specified valve gate layouts |
|
Ejection Mechanism |
Stripper plate, angled lift pins, heavy-duty ejector pins |
Guided pillar alignment with wear-resistant plates |
|
Cooling System |
Optimized baffled and spiral cooling circuits |
Direct water-line configuration to control thermal distortion |
|
Expected Mold Lifespan |
500,000 to 1,500,000 production cycles |
Maintained under standard injection parameters |
Product Advantages
High Structural Stiffness: Ribbed profile integration mapped directly into core and cavity inserts to prevent side-wall deflection under maximum loads.
Optimized Thermal Management: Computer-aided cooling channel placement adjacent to high-heat zones (handle sections and deep ribs) to stabilize ejection temperatures and minimize warpage.
Reliable Part Demolding: Engineered draft angles and polished core surfaces (SPI Finish Grade A2–B1) paired with synchronized stripper plates to prevent part sticking and automation jams.
Interchangeable Core Inserts: Standardized pocket tolerances enabling rapid replacement of high-wear areas, minimizing line downtime during long production runs.
Quality Control & Inspection
Steel Certification Verification: Ultrasonic testing (UT) reports and chemical composition certificates audited prior to CNC machining.
Dimensional CMM Tracking: Hardened core and cavity blocks verified via coordinate measuring machine at critical parting lines and interlocks, accompanied by detailed CMM inspection reports prior to shipment.
Moldflow Simulation Analysis: Executed prior to steel cutting to simulate fill time, weld-line locations, air trap positioning, and volumetric shrinkage rates.
Pre-Shipment Trial Run: Minimum 2-hour continuous trial shot test using client-specified resin. Sample parts verified for wall uniformity, stacking stability, and weight variance, supported by trial footage and dimension charts prior to export.
Customization & Engineering Support
DFM Reporting: Delivered within 48 hours of receiving STEP/IGES part files, identifying draft angle deficiencies, potential sink marks, and gate location optimization.
Custom Ventilation Layouts: Tailored perforation patterns on basket walls meeting specific airflow requirements for crop preservation without compromising structural load ratings.
Tonnage Matching: Direct engineering coordination verifying shut-off heights, clamp force distribution, and robot extraction clearance against existing press inventories.
Applications
Fresh Produce Harvesting
Field-to-packhouse collection baskets for citrus, apples, berries, and stone fruits.
Agricultural Logistics & Storage
Stackable and nestable crate systems utilized in automated cold-chain warehousing and distribution hubs.
Aquaculture & Processing
Perforated industrial containers deployed in seafood handling and wet-environment sorting facilities.
After-Sales & Technical Support
Documentation Package: Complete delivery including 2D assembly drawings, 3D electrode models, hydraulic/pneumatic schematic diagrams, and spare parts lists.
Spare Parts Availability: Standardized components (springs, guide pins, standard nozzles) dispatched within 48 hours of request.
Remote Engineering Assistance: Video-based troubleshooting support for parameter adjustments, cooling optimization, and routine maintenance schedules.
FAQ
Q: What steel grade is recommended for harvest basket molds running over 1,000,000 cycles?
A: DIN 1.2738 (pre-hardened to 32–36 HRC) is specified for large mold bases and structural cavity plates due to its polishability and toughness. For abrasive recycled PP/HDPE blends, localized vacuum hardening (HRC 48–52) is applied on high-wear sliding surfaces and gate zones.
Q: How is warpage prevented on large, thin-walled agricultural baskets?
A: Warpage is controlled at two stages: first, through Moldflow simulation to balance filling pressure and eliminate differential cooling; second, by integrating high-density baffled cooling lines directly into the core side to ensure uniform heat extraction before part release.
Q: Can existing hot runner system brands be integrated into the new mold base?
A: Yes. Standard pocket dimensions and wiring layouts are configured to match your plant's inventory (e.g., YUDO, Incoe, Husky), reducing internal maintenance training overhead and duplicate spare parts stock.
Q: What is the typical lead time from DFM approval to mold test trials?
A: Standard lead times range from 45 to 60 calendar days, governed by mold size (500T–1200T class), steel availability, and cavity count complexity. An explicit Gantt chart schedule is provided upon deposit confirmation.
Q: How are molds protected for international ocean freight?
A: Molds are coated with anti-rust agent, wrapped in heavy-duty waterproof plastic film, secured in vacuum-sealed moisture barrier bags, and bolted inside ISPM 15-certified fumigated wooden crates featuring designated lifting and center-of-gravity anchor points.
Q: What files are required to initiate a formal quotation and DFM?
A: Provide 3D product models in STEP, IGES, or Parasolid format, alongside annual volume projections, target cycle time expectations, raw material grade specifications, and injection machine tie-bar spacing dimensions.
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