Rubber Preforming Machine -Precision Preformer (JYZ250, JYZ200, JYZ150)

The Precision Preformer is a type of rubber blank manufacturing equipment with high efficiency and high accuracy. This machine can process a wide range of rubber material, and is able to extrude rubber blanks of ring, rectangle, strip and odd shapes. It is especially suitable to produce sealing members, oil seal, rubber tyre valves, bottle closures, tennis balls and shoe soles, etc. It integrates a variety of different functions such as vacuuming, filtrating, extruding, cutting, weighing, counting, etc.

Structure introduction:
The precision preformer is composed of a RAM extruder and a rubber blank cutter attached to the RAM head. It is also equipped with hydraulic, vacuum, heating, pneumatic and electrical system. While in operation, the first step is to open the RAM head and add the preheated prehensile rubber material into the machine from anterior part of the barrel. After that, the RAM head is to be closed to adjust the extruding and cutting speed (volume control chart is provided with the machine). Eventually, after vacuumization and cutting, the rubber blank with precise weight will then be obtained.
2.1 Extruding device: It is composed of hydraulic cylinder, batching barrel and RAM head.
2.2 Hydraulic device: This device is selected with high-pressure gear pump and YUKEN flow valve. Hydraulic oil in hydraulic cylinder is controlled by the flow valve and the pressure difference prior to and after throttling is controlled at a constant value so as to ensure the precise weight of the rubber blank extruded. This device is equipped with cooling system driven by 2 sets of hydraulic axletrees which can make reasonable and effective use of energy and control the temperature of the hydraulic oil.
2.3 Pneumatic device: It is used to open and close the RAM head as well as control the movements of other devices, for example, the cylinder.
2.4 Vacuumizing system: Before extruding and cutting of rubber material, the vacuumization aims at eliminating the air remained inside the barrel and the RAM head as well as the gas contained in the rubber material so as to improve the quality of sulfur products to be produced in the following process.
2.5 Heating system: With the adoption of water circulation heating method, the temperature is controlled and displayed by the digital thermostat which can effectively maintain the constant temperature of the RAM head and the barrel.
2.6 Cutting device: It is composed of frame, a motor and a speed reducer. And under the bottom of the frame is a conveying device.

Preformers Features:
A Proven high quality blanking technology to accurate preforms from silicone to FKM;
A cost-cutting solution which reduces material wastage and labour costs with a quick return on investment;
An energy-saving method of production to reduce power consumption;
Providing a higher quality and more accurate up to +/- 1% preforms;
No heat build-up during extrusion;

JYZ Preformer features
Batch sizes in 13, 23, 60 liters
Accuracy of up to +/- 1% in weight
Variable AC inverter controlled cutter
Speed up to 300 cuts per minute
Extended centre for easy cleaning
PLC & touch screen operator interface
Weigh scale feedback loop for blank weight control