What is the forming principle of a rubber hose extruder?
Time：
2020-05-24
There are many types of rubber hoses. Classified by their structure, they can be divided into single-layer hoses, double-layer composite hoses, and multi‑layer hoses with intermediate layers. Due to these structural differences, the equipment and manufacturing processes used for each type also vary. The production process for single‑extrusion hoses is relatively simple: a pin‑type rubber extruder shapes the hose into the desired profile, after which it undergoes vulcanization in a hot‑air curing oven. Once vulcanization is complete, water cooling yields the finished product. In contrast, specialized hoses such as automotive hoses—characterized by their multi‑layer construction—require more complex manufacturing processes.
There are many types of rubber hoses. Classified by their structure, they can be divided into single‑layer hoses, double‑layer composite hoses, and multi‑layer hoses with intermediate layers. Due to these structural differences, the equipment and manufacturing processes used for each type also vary. The production process for single‑extrusion hoses is relatively simple: a pin‑type rubber extruder shapes the hose into the desired form, after which it undergoes vulcanization in a hot‑air vulcanizing chamber. Once vulcanization is complete, water cooling yields the finished product. In contrast, specialized hoses such as automotive hoses with multiple layers have a more complex manufacturing process. First, an extruder produces the inner layer; once this layer is formed, a conveyor transports the hose to a knitting machine for thread weaving. A drawing unit then feeds the knitted hose into the T‑die of another extruder. The extruded rubber and the knitted hose blank are combined to create the desired hose structure. After extrusion, the product must pass through water and a release‑agent bath. Finally, it is cut to the required length on a fixed‑length cutting machine. The cut hoses are then placed in shaping molds for final shaping, before being transferred to a vulcanizing tank for vulcanization. This vulcanization process differs from that performed in a hot‑air vulcanizing chamber: the pressurized method is called “pressurized vulcanization,” while the hot‑air method is referred to as “unpressurized vulcanization.” The specific vulcanization technique chosen depends on the particular product. Hebei Shuangda Rubber & Plastics Equipment Co., Ltd. is a specialized manufacturer of extruders. Our product line includes rubber extruders, plastic extruders, sealing‑strip production lines, EPDM vulcanizing lines, gel‑filtering machines, and rubber‑cutting machines, among others. Customers interested in our equipment are welcome to visit our facility or contact us for further information.
Related news
Shuangda
Hebei Shuangda Rubber Machinery Co., Ltd.
Tel：400-0319-386
Landline：+86-319-6017632
Email：shuangdaxiangsu@126.com
Official website：www.shuangdajx.com
Addr：Liyuantun Industrial Zone, Weixian County, Xingtai City, Hebei Province
Copyright © 2022 Hebei Shuangda Rubber Machinery Co., Ltd.