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文章详情
72-Cavity PET Preform Mold Dehumidifier (Export Version)
日期：2026-08-18 05:29
浏览次数：107
摘要：72-Cavity PET Preform Mold Dehumidifier (Export Version),72-Cavity, PET Preform
72-Cavity PET Preform Mold Dehumidifier (Export Version),72-Cavity, PET Preform
72-Cavity PET Preform Mold Dehumidifier (Export Version)
1. Overview
This equipment is specially developed for 72-cavity high-speed PET preform injection molding lines, mainly used to solve the condensation problem caused by the temperature difference between the low-temperature cooling mold (10~25℃) and the high-humidity workshop environment (25~35℃, 50%~90%RH). It adopts advanced dehumidification technology and synchronous blowing system to completely eliminate condensation on mold cavities, parting surfaces and ejector pins, ensure preform transparency and qualification rate, protect molds from rust and jamming, and realize 24-hour continuous and stable production.
2. Application Scope
- Suitable for 72-cavity high-speed PET preform injection molds
- Applicable to PET preform production lines for mineral water bottles, beverage bottles, edible oil bottles, daily chemical bottles, etc.
- Stable operation in high-humidity workshops, rainy seasons and coastal areas
- Compatible with high-speed injection molding machines with a molding cycle of 3~5 seconds
3. Working Principle
1. Ambient air is drawn into the equipment by the main fan and filtered through a 3-stage filtration system (G4+F8+H13) to remove dust, lint and impurities, protecting the dehumidification rotor and preventing nozzle blockage.
2. The filtered clean air enters the honeycomb rotor / molecular sieve dehumidification system. The microporous structure inside the rotor absorbs moisture in the air, processing the air into ultra-low dew point dry air (dew point ≤-40℃).
3. The dry air is heated to 40~60℃ (adjustable) by the constant temperature heating system to avoid secondary condensation when it contacts the cold mold, without affecting mold cooling and molding cycle.
4. The heated dry air is evenly distributed to 72 cavity nozzles, parting surface air curtain and ejector pin blowing ports through the multi-channel air distribution system, ensuring uniform air volume in each cavity.
5. The equipment is linked with the injection molding machine: it starts blowing automatically when the mold is opened (blowing time: 0.5~2 seconds, adjustable) and stops immediately when the mold is closed, without affecting production efficiency.
6. The parting surface air curtain forms a dry air wall to isolate humid workshop air from the cold mold, fundamentally preventing re-condensation.
7. When the dehumidification rotor is saturated with moisture, it automatically enters the high-temperature regeneration zone (120~140℃). High-temperature hot air desorbs moisture to restore the dehumidification capacity of the rotor, realizing 24-hour uninterrupted operation.
4. Structure Composition
1. 3-Stage Filtration System: G4 primary filter, F8 intermediate filter, H13 HEPA high-efficiency filter (drawer-type design, easy to disassemble, clean and replace).
2. Honeycomb Rotor Dehumidification System: Core dehumidification unit, including dehumidification rotor, regeneration fan and regeneration heating tube.
3. Constant Temperature Heating & Air Supply System: Centrifugal main fan, 304 stainless steel heating tube, temperature sensor and thermal insulation air duct.
4. 72-Cavity Uniform Air Distribution System: Multi-channel flow divider with adjustable air volume, ensuring uniform air supply for each cavity (air volume deviation ≤5%).
5. Mold Blowing System: 72 cavity-specific copper alloy nozzles, parting surface air curtain and ejector pin blowing nozzles (detachable, easy to clean).
6. PLC Intelligent Control System: PLC controller, 7-inch color touch screen, dew point sensor, temperature sensor, sound and light alarm and other electrical components (Schneider/Siemens/Omron brand).
5. Key Technical Parameters
|
Parameter Name
|
Specification
|
|---|---|
|
Suitable Mold
|
72-Cavity PET Preform Injection Mold
|
|
Dehumidification Method
|
Honeycomb Rotor / Molecular Sieve Dehumidification
|
|
Dew Point Temperature
|
≤ -40℃ (Recommended: -40℃~-50℃)
|
|
Air Handling Capacity
|
600~900 m³/h
|
|
Outlet Air Temperature
|
40~60℃, Adjustable & Constant Temperature (Precision: ±1℃)
|
|
Blowing Configuration
|
72 Cavity Nozzles + Parting Surface Air Curtain + Ejector Pin Blowing
|
|
Blowing Time
|
0.5~2 Seconds, Adjustable
|
|
Control Method
|
PLC + 7" Color Touch Screen
|
|
Linkage Signal
|
Injection Molding Machine Mold Open/Close Signal
|
|
Power Supply
|
380V ±10%, 50Hz, 3-Phase 5-Wire
|
|
Rated Power
|
12~18 kW
|
|
Noise Level
|
≤75 dB(A)
|
|
Protection Level
|
IP55 (Overall), IP54 (Electrical Control Cabinet)
|
|
Service Life
|
≥5 Years (Overall), ≥3 Years (Core Components)
|
6. Key Features
- Special optimization for 72-cavity high-speed molds, uniform air distribution, no dead zone and no partial condensation.
- Stable ultra-low dew point (≤-40℃), completely eliminating mold condensation and preform defects (whitening, fogging, water marks).
- Seamless linkage with injection molding machines, synchronous blowing with mold opening, no loss of production cycle.
- Constant temperature air supply, no impact on mold cooling efficiency and preform molding quality.
- Intelligent alarm function: automatic sound and light alarm for overheating, high dew point, filter blockage, overload and phase failure.
- 24-hour continuous and stable operation, suitable for high-speed continuous production lines.
- Modular structure, easy disassembly and maintenance; wearing parts (filter, nozzle) are easy to replace.
- Corrosion-resistant design: 304 stainless steel air duct and blowing components, durable in harsh workshop environments.
