Production process of high-density polyethylene outer sheath tube and outer sheath tube mold
A high-density polyethylene and sheathing technology, which is applied to the production process of high-density polyethylene outer sheathing and the field of outer sheathing molds, can solve the problem of uneven wall thickness of polyethylene outer sheathing and substandard compressive strength , poor overall performance and other problems, to achieve the effect of stable product performance, reduced raw material consumption, and uniform thickness
Inactive Publication Date: 2014-06-11
天津市盈德意利保温材料有限公司
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Problems solved by technology
The high-density polyethylene outer protective pipe produced by traditional molds mainly has the following problems: uneven wall thickness of polyethylene outer protective pipe, low elongation rate, substandard compressive strength, and poor overall performance
Method used
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[0018] In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
[0019] see figure 1 , a high-density outer sheath tube mold, including a feed body 1, a split fluid 2, a spiral body 3, a straight body 4 and a molding body 5, a molding body 5, a straight body 4, a spiral body 3, a split fluid 2 and a feed The body 1 is assembled from bottom to top to form a tower structure. The middle part of the feed body 1 is provided with a feed inlet 6, and the lower port of the feed inlet 6 is provided with a shunt pipe 7, and the shunt pipe 7 passes through the shunt fluid 2, and interfaces with the thick pipe 803 of the spiral pipe 8 in the spiral body 3, and the spiral pipe 8 The overall structure is in a figure-eight shape, including a thick tube 803, a figure-toe tube 802, and a vertical tube 801 connected se...
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The invention relates to a production process of a high-density polyethylene outer sheath tube and an outer sheath tube mold. A feed inlet in a feed body of the mold, a diversion tube in a diversion body, a spiral tube in a spiral body, a through-flow tube in a through-flow body and a vertical molding tube in a molding body form a basket-like tower-shaped structure. The production process of the high-density polyethylene outer sheath tube with the structure is of the production process taking the basket-like reticulated mold to replace a traditional diversion support type mold. In the process, spiral flow is used for replacing original linear flow for increasing capacity pressure, extrusion molding can realize continuous and automatic production, the produced high-density polyethylene outer sheath tube is uniform in thickness, and the production process has the advantages of improving the strain rate and elongation at break, realizing stable product performance and reducing the consumption of raw materials, energy consumption and labor cost.
Description
technical field [0001] The invention relates to a production process of a high-density polyethylene outer sheath pipe and a mold for the outer sheath pipe. Background technique [0002] With the use of prefabricated direct-buried thermal insulation pipes in winter heating areas in northern my country, the production technology and industrial scale of high-density polyethylene outer protective pipes have developed rapidly. At present, the traditional mold used in the production process of high-density polyethylene outer protective pipe is a shunt bracket. The feed inlet of the bracket has only one layer of screen mesh. It is connected with the traction tube and directly leads out. The high-density polyethylene outer protective pipe produced by traditional molds mainly has the following problems: uneven wall thickness of polyethylene outer protective pipe, low elongation rate, substandard compressive strength, and poor overall performance. Contents of the invention [0003...
Claims
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IPC IPC(8): B29C47/20B29K23/00B29C48/32
Inventor 董启顺董启成
Owner 天津市盈德意利保温材料有限公司