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Pin-type rubber extruder

Time：

2020-08-22

Rubber extruders are used to manufacture rubber products, and many extrusion‑formed rubber items rely on them. The cross‑sectional shape of the extruded product is determined by the die, which is connected to the extruder’s die head and body. Die design for rubber extruders is tailored to the specific dimensions and geometry of the final product. The die material should be selected for its high wear resistance and corrosion resistance, as the rubber, after being forced through the die, undergoes prolonged high‑temperature friction against the die during extrusion, before being drawn by a take‑up unit into a curing oven for vulcanization.

Rubber extruders are used to manufacture rubber products, and many extrusion‑formed rubber items rely on them. The cross‑sectional shape of the extruded product is determined by the die, which is connected to the extruder’s die head and barrel. Die design for rubber extruders is tailored to the product’s size and geometry. Material selection should prioritize high wear resistance and corrosion resistance, as the rubber, after being extruded, undergoes prolonged high‑temperature friction against the die during shaping, before being drawn by a take‑up unit into a curing oven for vulcanization. When developing a die, it is essential to consider the product’s expansion ratio; for EPDM rubber, dies are typically designed with a 1:1 dimensional ratio, a choice that depends on the rubber formulation and the specific type of rubber used.

Structure and Characteristics of Pin-Type Cold-Feed Extruders

1. The barrel is designed in a segmented configuration; the feeding section features helical grooves that, in conjunction with the side pressure roller, enhance feeding capacity, while the plasticizing and extrusion sections are equipped with an varying number of pins.

2. The temperature of each section is automatically controlled in stages by a hot-water circulation system.

3. The pin‑type cold‑feed extruder delivers excellent plasticization, high extrusion capacity, low die‑temperatures, and smooth operation.

4. The screw is machined on a CNC lathe, polished, and boasts high geometric accuracy. After nitriding, it exhibits excellent wear resistance.

5. The gears of the reducer adopt an alloy steel hardened tooth surface structure;

Application of Sensors in Pin-Type Cold-Feed Rubber Extruders

Pin‑type extruders are used for extrusion molding, and many rubber products are manufactured using rubber extruders. The trend in the development of rubber extruders is clearly toward greater intelligence and automation. As labor costs continue to rise, higher levels of automation translate into greater cost savings. So how can we enhance the automation of our equipment?

In production, we must constantly monitor key process parameters, such as die pressure, temperature profiles along the extruder barrel, and screw speed, as well as the power supply levels. All these measurements are captured by sensors; for example, installing a pressure sensor at the die of a rubber extruder allows us to continuously track die pressure and ensure it meets production requirements. Typically, this data is transmitted to the equipment’s central control console, enabling one‑click adjustments.

Hebei Shuangda Rubber & Plastics Machinery Co., Ltd. is a modern enterprise integrating research and development, manufacturing, and sales of complete sets of extrusion equipment for rubber, silicone, and plastics. The company’s main products include rubber extruders, rubber hose extrusion lines, three‑layer composite sealing strip extrusion lines, silicone sealing strip production lines, plastic sealing strip production lines, plastic profile production lines, plastic pipe production lines, elastomer extruders, and other extrusion equipment, as well as production machinery for engineering seals, automotive seals, wire and cable applications, air‑conditioning hoses, braided hoses, automotive hoses, waterstop strips, and related products.

Consultation Hotline: Manager Jiang, 13463938789