Plastic Auto‑Loade
Plastic Auto‑Loader
Multiple domestic factories for bidding. Free promotion. Price to be negotiated between winning bidder and buyer.
Please provide below information for posting:
- Equipment model; 2. Conveying capacity; 3. Equipment power; 4. Purchase quantity
表格
| Type | Working Principle & Structural Features | Core Advantages | Main Limitations | Typical Application |
|---|---|---|---|---|
| Integrated Auto‑Loader | Fan (power source) and hopper (material collector) are assembled into one unit, mounted directly onto dryer or processing‑machine hopper. | Compact, lightweight, simple installation, plug‑and‑play without complex piping; cost‑effective. | Fan vibration may affect host machine; standalone unit, hard to form network; low power with short conveying distance. | Individual feeding for single injection‑molding or extruder, especially machine‑side applications without long‑distance transport. |
| Split‑type Auto‑Loader | Fan main unit and receiving hopper are separated and connected by flexible hose. | Strong suction power, noise isolation (main unit can be placed remotely); one main unit can serve multiple hoppers alternately (one‑to‑multi), forming foundation of central conveying system. | Relatively complex structure; piping layout required for installation; slightly higher initial investment. | Large workshops with high throughput, long conveying distance and multi‑machine centralized feeding, or sites with strict noise requirements. |
Classification by Conveying Principle: Vacuum vs Mechanical
Besides mainstream vacuum loaders, mechanical loaders transport material via mechanical structures.
表格
| Type | Working Principle | Core Advantages | Main Limitations | Typical Application |
|---|---|---|---|---|
| Vacuum Auto‑Loader | Fan generates negative pressure to draw material through suction hose into hopper; filter separates air from material, material discharges by gravity. | Fully enclosed conveying, zero dust leakage, no moisture absorption or contamination; high automation for long‑distance transport; suitable for pellets and partial powders. | Poor performance for ultra‑light powder or extra‑long fiber materials; throughput degraded by conveying distance and height. | Most plastic‑processing applications: pellet feeding for injection molding, extrusion, blow molding, and central conveying systems. |
| Spring / Screw Loader | Motor drives helical spring or screw rotating inside flexible hose to push material mechanically. | Simple and low‑cost; handles slightly sticky or damp materials; no negative‑pressure loss over distance. | Non‑fully‑enclosed conveying with dust risk; flexible hose wears fast; limited conveying distance & angle; not for long‑distance or bent‑route transport. | Supporting extruders and high‑speed mixers for powder or pellet transport, especially applications with moderate vertical lifting height. |
Core Specifications: Hard Indicators for Selection
Conveying Capacity (kg/h): Weight of material transported per hour, core index for production throughput. Range: 40‑150 kg/h (small single‑phase unit), 250‑500 kg/h (300G/400G standard unit), 600‑800 kg/h (700G/900G series), up to 1000‑4000 kg/h (high‑power unit or central‑system main unit). Selection tips: Determined by hourly consumption of injection‑molding or extruder (molding cycle, shot weight). Conveying capacity shall slightly exceed maximum material consumption; allow capacity derating for long distance & lifting height (select higher power for long‑distance transport).
Suction Lift / Conveying Distance (m): Effective vertical lifting height or horizontal reach for material transport. Range: Conventional units lift 3.5‑5 m; high‑power units reach 6‑8 m https://baike.baidu.com/item/%E4%B8%8A%E6%96%99%E6%9C%BA; horizontal distance for central conveying system can reach 150 m. Reference: Select according to site layout (silo position, workshop height). Higher lift requires larger fan power.
Motor Power (kW): Determines suction power and energy consumption. Range: 0.65 kW (small single‑phase), 1.1‑2.2 kW (standard three‑phase), 4‑15 kW (high‑power central main unit). Motor types: Brush‑commutated motor (for small integrated units such as 300G, low‑cost yet short service life); induction motor (400G and above, low noise and long service life).
Receiver Hopper Capacity (L): Buffer volume for incoming material, affects feeding continuity. Range: 2‑50 L https://www.mmsonline.com.cn/info/1050.shtml. Larger capacity reduces motor start‑stop frequency yet increases installation‑height requirement.
Filter Configuration: Critical component preventing dust ingress into fan; influences service life and maintenance interval. Types: Wire‑mesh filter, paper‑cartridge filter, auto‑cleaning filter (compressed‑air back‑blow). Features: Independent filter cartridge facilitates dust removal and maintains stable suction performance.
Control & Alarm Functions: Intelligent control core for modern auto‑loaders. Basic functions: Micro‑computer control, adjustable feeding duration (0‑30 s), low‑material alarm, motor overload protection. Advanced functions: Proportional‑valve control (proportionally blend virgin and regrind material), multi‑point suction control, networking with central monitoring system.
Applicable Material Form: Raw‑material types the machine can process. Pellets: Compatible with nearly all auto‑loaders. Powder: Requires special powder‑dedicated auto‑loader (anti‑bridging & anti‑adhesion design); standard loaders suffer frequent filter clogging. Flakes / Regrind: Check fragment size; over‑long or oversized pieces may block piping or tangle impeller.
Selection Guidelines
Follow clear logic for plastic auto‑loader selection:
‑ Determine model by site layout: Stand‑alone machine, compact space, nearby material source: select integrated auto‑loader. Multi‑machine centralized feeding, long‑distance transport, low‑noise requirement: choose split‑type auto‑loader or deploy central‑conveying system. Powder transport or moderate vertical lifting: spring‑screw loader is an alternative.
‑ Determine specification by throughput: Calculate maximum hourly material consumption to define conveying capacity and motor power; account for performance derating from suction lift; select higher‑power unit for long‑distance conveying.
‑ Configure equipment according to material type: Pellets: standard auto‑loader works. Powder / bridging‑prone material: select powder‑special loader with anti‑bridging device https://www.shini.com/tw/faq_13_1.html. Regrind blending required: equip proportional valve for accurate virgin‑regrind ratio feeding.
‑ Select functions based on environment & maintenance: Dusty workshop: prioritize unit with auto‑cleaning filter (back‑blow function) to reduce manual cleaning frequency. Noise‑sensitive area: adopt split‑type unit with induction motor; place main unit outdoors or inside sound‑insulated room. High‑automation expectation: ensure basic controls including low‑material alarm and overload protection.
Participation Process
Manufacturers: Contact supplier service for supply registration.
Buyers: Click group‑purchase or contact procurement service to submit requirements. The platform filters suppliers from database or releases bidding based on aggregated demands. Buyers select competitive suppliers and sign sales contracts.
