The important parameters of blown film unit Zhongli Machinery teaches you to identify

The film blowing unit is mainly used to blow LDPE and LLDPE wide films. LDPE and LLDPE are equipped with different molds to adapt to different inflation ratios. When the inflation ratio changes, the film folding diameter will change accordingly.

Main technical parameters of film blowing unit: (1) Extruder;

(2) Single-layer film head and head support;

(3) Air ring; (4) Traction device with plug-in board;

(5) Back-to-back coiling device; (6) Electric control system of the whole machine.

The specific model of the extruder: SJ-70/30;

Length to diameter ratio: 30:1;

Screw type: corrugated rod mixing head;

Screw speed (max): 120r/min

Barrel temperature control: three-zone constant temperature automatic control;

Barrel heating method: cast aluminum heating;

Barrel heating power: 24KW 1.8, forced water cooling in the barrel heating section;

Barrel cooling fan power: 0.18KW (3 units);

Gearbox lubrication method: forced oil circulation lubrication

Material of screw barrel: 38CrMOALA, nitriding treatment.

Main motor: 37kw three-phase asynchronous motor, variable frequency speed regulation;

Maximum extrusion capacity: 160kg

Part of the die head of the die head: center feed screw type; die head: forging, quenching and tempering treatment; die diameter: φ160φ120; heating method: cast aluminum heating; head heating power: 13KW;; head temperature control method: thermoelectric Even, automatic temperature control meter.

Cooling device: cooling air ring, labyrinth air ring; air ring outer diameter: φ800mm; air ring fan power: 1.5KW

Traction machine: Traction frame form: detachable structure, with safety operation platform and safety guard railing; upper traction motor: Hebei motor; power: 1.5KW frequency conversion speed regulation; reducer model: BW15-10;; traction steel roller specifications: φ160×1500mm; Specification of traction rubber roller: φ160×1500mm Material: Nitrile rubber; The opening and closing of the traction roller is adjusted by hand wheel; Herringbone form: velveteen low friction coefficient herringbone; Angle adjustment form: manual adjustment; insert Board form: inverted triangle three-dimensional.

Insertion board adjustment form: manual adjustment; traction center height: 5500mm; traction line speed: 3～60m/min; lifting range: 800mm 5. Winding device; Winding form: back-to-back friction winder; Winding roller specifications ：Φ318×1500mm Material: Nitrile rubber; Winding motor: Torque motor; 1 set; Winding speed: 3～60m/min; Winding paper tube specification: φ76 inner hole×5-1500mm; Maximum winding product width: φ400×1000mm; Coiling line speed: V max=80m/min 6. Electric control cabinet of the unit. Machine dimensions (length×width×height) 6500×3000×5500mm 8. Total weight of the machine: about 1.5 tons 3. Overview of the structure The friction coiling part is composed. Structural composition: The air ring device is mainly composed of a blower, an air volume distributor, an air ring and an air pipe. The air blown by the blower flows through the air volume distributor and enters the air ring from the air pipe to the mold bubble to achieve the purpose of cooling.