PU FOAMING MACHINE

(6head for 6color change)

Technical Configuration

1.  Profile:

The HAL-6 steering wheel polyurethane foam automatic production line consists of two components high pressure metering system, six groups of high pressure mixed heads, six sets of high-pressure mixed head color pulp injection system, six sets of hydraulic mould frames, six sets of exhaust dust removal systems, and transportation pipelines. It can meet the collinear production of polyurethane foam with various specifications and various color steering wheel.

The two components of the high pressure foaming system adopt 1 polyol tank (POLY.) and 1 polyisocyanate (ISO.) tank, and the two metering units are driven by independent variable frequency motor. The output flow of the pump is controlled byvariable metering pump, and the open loop / closed loop control can be realized.

The production line is composed of a conveying pipeline system, a high-pressure mixing head, a color adding system, a hydraulic mould frame, an exhaust dust collecting enclosure and a mold temperature machine. The production line is arranged in a straight line to suit the collinear production of various steering wheels. Each hydraulic mould frame is attached with a high-pressure mixing head and color metering system, and the alternate injection foaming of different station products is realized according to the setting of the system. Each station is attached with exhaust dust and dust collection room. The mold realizes the temperature control through the hot water cycle. In the process of spraying, the release agent and inner paint in the air are discharged through the exhaust and dust removal system.

The whole system realizes automatic continuous production through PLC control. The production line is completed by artificial spray mold release agent, mold paint, automatic feeding, automatic pouring, automatic adjustment of proportioning, automatic mold closing, heating and curing, automatic die opening, manual blanking and cleaning.

2.  Main parameters table:

3. Equipment, main technical parameters and description

3.1 Equipment Type: HAL-6

2.2  The application of foam: hard foam

2.3  Viscosity: (22 ℃) Polyol : ~ 2000mPas Isocyanate:~1000mPas

2.4  Injection capacity (mixing ratio 100:50) :60~400g/s Mixture ratio adjustment rang: 1:1 ~ 5:1

2.5  Injection time: 0.01 ~ 9.99s (accurate to 0.01s)

2.6  Injecting program setting:    Manual inject time set: 2pcs.        Auto inject time set:30pcs.

2.7  Measurement Unit: Measurement accuracy of ≤ 0.5%

Components, including those with anti-vibration pad bracket, speed adjustable motor, coupling of shaft, high precision metering pump of volumetric gear type and safety valves, pressure sensor , rotating speed sensor. Metering pump and motor connected by magnetic.

2.8  Pressure limit and control system

Both Polyol and Isocyanate working pressure are in a range of 6~22Mpa. Whenever the

working pressure exceed the range of 25Mpa, the machine will be stopped automatically and give an alarm at the same time.

2.9  Component flow control and test unit

According with the pump’s flow 、 the components’ mixing range and the related parameters,Our machine can change the components’ flow out by adjust the shift motor. Testing and correcting the components’ flowing parameters and the mixing range by their own feeding valve, so as to adjust and control the components’ flow.

2.10  Component filter:

It is installed between material tank and metering pump. The accuracy of filtering is A-330μm，B-330μ m

2.11  Mixing head(C5 V style): 6SETS

With advanced technology to produce high-pressure self-cleaning linear mixing head, using needle adjustable nozzle. In order to ensure mixed

Effect of raw material respectively from two different directions of collision mixing nozzle in order to ensure adequate mixing component.

2.12  Mixed head working shift system

Through system setup, the automatic switching between components of six mixed injection systems can be realized. 6 sets of hydraulic control switch valve control components and 6 mixed head mixing.

2.13  Machine frame

Used for fix the tank、metering pump system、pipe、control system.

2.14  Hydraulic Unit

l  Pump flow (L / min): 15

l  Motor(SIEMENS) Power (kw): 5.5

l  Motor speed (rpm): 1450

l  1 Pcs 80L oil tank installed above the supporting plate;

install the driver to install on-board motors, pumps, buffer coupling, hydraulic manifold block, integrated block is installed on the booster valve;

l  All valves, pressure gaupcss, pressure switches and manual vent valve load, etc.;

l  1 Pcs 10L high-pressure accumulator, in order to ensure rapid mixing and to absorb the vibration of the first switch;

l  1 full precision back to the oil filter;

l  1 set of oil cooler, valves, etc. to ensure the hydraulic system will not work in a continuous temperature rise is too high (≤ 60 ℃);

l  1 set of level display, indicating the oil level inside the tank;

l  2 Pcs NG10 solenoid valve control L were mixed the first two mixing chamber and the main piston to open or close.

2.15  Polyol tank: 1Pcs.

l  Effective volume: 250 liters;

l  Jacket heating reservation style, High stainless steel;

l  Maximum working pressure: 0.6MPa;

l  1 Pcs jacket water safety valve, set the working pressure of 0.25MPa;

l  1 Pcs safety valve, set pressure 0.05~0.45MPa, to control the max. air pressure;

l  Output is from T pipe with two manual cut valve (bypass valve is used for sewage);

l  Temperature transducer: PT50;

l  Visible Liquid level display.

l  1Pcs agitator,0.55kw, speed 46rpm, with mechanical sealing.

2.16  Isocyanate tank: 1Pcs.

l  Effective volume: 250 liters;

l  Jacket heating reservation style, High standard structral steel;

l  Maximum working pressure: 0.3MPa;

l  1 Pcs jacket water safety valve, set the working pressure of 0.25MPa;

l  1 Pcs safety valve, set pressure 0.05~0.45MPa, to control the max. air pressure;

l  Output is from T pipe with two manual cut valve (bypass valve is used for sewage);

l  Temperature transducer: PT150;

l  1Pcs agitator,0.55kw, speed 46rpm, with mechanical sealing.

l  Visible Liquid level display.

2.17  Temperature control unit：

l  Heating：2×3KW，Jacket structure， Two heating unit to control two material tankIndividually.

l  Refrigeration cooling unit “5HP”;

l  Two heating units respectively control the heating of the two tanks, cooling unit is equipped with 5HP compressor, water pressure 0.25MPa, automatic control offoaming raw material temperature process requirements.

2.18  Metering pump automatic lubrication

For the polyisocyanate metering pump hand wheel shaft seal regular automatic lubrication and cleaning, lubricating medium for DOP