Polyurethane Ear Plug Machine Pu Moulding Machine For Foam Ear Plugs Noise Reduction

This machine is used for earplug production.

Product Characteristics

1. This machine is used for win-color and single-color polyurethane earplugs and so on.

2. Continuous automatic production line can increase production capacity and reduce the

rejected products.

3. Mold using water heating, guaranteed the stability temperature of the mold.

4. The whole equipment adopts PLC programming, automatic control, pouring,

closing molds, the equipment head using automatic cleaning.

The main technical parameter soft the equipment and instructions

1. Output (5~20g/s)

2. Suitable temperature :Between 20-60

3. Injection time:0.01-99.9(accurate to 0.01S)

4. Number of injection procedures:

   Manual injection:10

   Automatic injection:255

5. Metering unit: component metering,metering accuracy 0.5%. gear speed motors ;couplings; high-precision displacementgear metering pumps; safety valve ;pressure sensor ;speed sensor.

6. Pressure limit and control system

The polyether polyol and isocyanate component working pressure control in 0-4MPA,If the working pressure exceeds settled pressure range, the device will automatically stop injecting material and give an alarm.

7. Flow measuring and controlling system

According to the flow rate of the pump output and component mixing ratio process r equipment sand parameters, the components flow output flow of the pump by adjusting the rotational speed of speed regulation motor. Remove the mixing head ,with the their respective feed injection valve, make A, Braw materials flow to their respective container, check each component flow parameters separately, and the correction to achieve the regulation and control of the component flow rate and corectin order to achieve the regulation and control of the component flow rate.

8. Components filter

The two components are respectively equipped with a mesh filter; the components filterin stalled between the metering pump and tank, the filtering work are done by cleaning on are gular date and opening the sewage valve.

9. Mixing head.

The materials are injected by the valve to the mixing chamber, precision spit, and synchronization without clogging. Mixing head driven by a motor to mix mechanically. The motor and the agitation axis are driven by a belt; the speed can be adjusted by the motor pushing and pulling.

When test status, the motor and mixing does not rotate. Agitating in advance or postponed, controlled by the polyurethane dedicated equipment controller, optional automatic mixing and manual mixing of the two modes. The open and close of the valveis controlled by the cylinder. Mixing head, mixing chamber as well asfan-shaped mouth facilitate the demolition. The pressure balance can be adjusted ,agitation by using a conical mixing head. Two sets casting mixing head, mixing head. Casting machine computer hasself-cleaning, air impact, emergency stop button.

10. Mixing head cleaning system

Mixing head cleaning system include 15L stainless steel barrel ,visual level gauge, safety valve, super charged device and related instrument. Solenoid valve control the air blast and liquid washing. The compressed air is used for blowing out of the mixing head residue and drying solvent.

Air blast time and liquid washing time are controlled by microcomputer, OP7 operation panel

The program of air blast and liquid washing can be settled.

Exhaust gas manually; pipe route of air blast and liquid washing are consisted in solvent resistance high-pressure pipe.

Equipped with power cleaning device
agitation axisrotate when cleaning
the surface of the tank MC log oaf fixed

11. Polyol tank:1

Effective volume of 80 l
sandwich type, the inner SUS304 stainless steel;
Maximum working pressure 0.6MPA;
A heating jacket, safety valve, set pressure of0.25Mpa
A pressure reducing valve with a pressure gauge, set pressureto0. 05-0.45MPA,

Control tank of compressed air in take pressure;
Output port through the three-way, two manual shut-off valve(the by pass shut off valve for sewage)
Level gauge: with visual liquid level ,control and measure the minimum, maximum, as well as the appropriate liquid level
Equipped with a temperature probe: PT100
feeding pump equipped with a stirrer ,power of 0.55KW,rotational speed59pm. With them ech anicalsealing device

The maximum allow able operating temperature: 200 degrees.
Outer: with insulation layer.
The surface of the tank affixed with the POLY signs

12. Isocyanatetank: an effective volume of80 l

Sandwich type, the inner SUS304 stainless steel;
Maximum working pressure 0.6MPA;
A heating jacket ,safety valve, set pressure of0.25Mpa
A pressure reducing valve with a pressure gauge, set pressureto0. 05-0.45MPA,

Output port through the three-way, two manual shut-off valve(the by pass shut off valve for sewage)
Level gauge: with visual liquid level ,control and measure the minimum, maximum, as well as the appropriate liquid level
Equipped with a temperature probe: PT100
feeding pump equipped with as tirrer, power of 0.55KW,rotational speed59pm. With them echanical sealing device

The maximum allow able operating temperature: 200 degrees.
Outer: with insulation layer.

13. With the feed pump, thepumpModelBB-50 motor 1.5KW, 4P

14. Electrical control system

Electrical control system are using programming controller with SCR solid-state button, programming operation panel for easy to operation.

The main electrical components are imported brand stensure the safety and reliability of the control system.
The operation panel displays each of the followingparameters:255feed injection position; feed injectiontime0.01-99.99; to adjust each component by SPS button component to control the temperature, pressure and failure information such as the metering pump over pressure;
The control system has a strong fault alarm function, equipped with asound and light alarm device ,equipment automatically shut down when necessary

Control cabinet include: program controller; relay contactors, all kinds of switches, buttons; system soft ware and control procedures

Pipes and the air handling system: components pipe line, including the hose for conveying the component sraw materials; the feeding hose installed in the mixing head; the feed back hose are connected to the tank;

Gas-liquid pipe used to transport compressed air and cleaning fluid, constituted by solvent resistance high pressure pipe; the compressed air are through the oil-water separator, oil mist device for processing

15. The nose with the servo motor drive screw X-axis and Y-axis turning back and forth.

The entire mach