Plastic extruding machine discharging die improving pipe shaping degree
A technology of extruder and mold, applied in the field of extruder discharge mold, can solve the problem that the inner diameter of the pipe cannot be well shaped, and achieve the effect of improving the efficiency of pipe discharge and the degree of shaping.
Inactive Publication Date: 2016-03-02
天津市志强管业制造有限公司
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Problems solved by technology
The existing extruder discharge mold includes an outer die and a mandrel that fits inside the die. The mandrel has a gradually decreasing radius and is kept at the same position as the die to maintain the shape of the inner diameter of the extrusion with a small inner diameter. Mold, at present, the mandrel shrinks from the inside of the die to the required output inner diameter and maintains a smooth state of horizontal extension. This kind of mandrel cannot achieve good shaping of the inner diameter of the pipe
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[0011] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0012] Such as figure 1 As shown, the present invention is installed on the front end of the extruder 1, including the outer layer die 2 and the mandrel 4 that is arranged in the die to cooperate with it. The front end of the mandrel extends horizontally to the same position as the die. The horizontal extension section 5 is provided with a heat insulation jacket 3 wrapping the horizontal extension section, and the wall thickness of the temperature insulation jacket is 0.3mm-0.5mm.
[0013] Since the temperature-insulation jacket wrapping the horizontal extension section is provided on the horizontal extension section of the mandrel, and the wall thickness of the temperature-insulation jacket is 0.3mm-0.5mm, when the raw ...
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The invention relates to the field of plastic extruding machine equipment, in particular to a plastic extruding machine discharging die improving the pipe shaping degree. The plastic extruding machine discharging die comprises an outer layer opening die and a core rod arranged in the opening die and matched with the opening die. The front end of the core rod horizontally extends to the position flush with the opening die. The horizontal extending section of the core rod is provided with a heat insulation sleeve wrapping the horizontal extending section, and the thickness of the wall of the heat insulation sleeve is 0.3 mm-0.5 mm. Due to the fact that the horizontal extending section of the core rod is provided with the heat insulation sleeve wrapping the horizontal extending section, and the thickness of the wall of the heat insulation sleeve is 0.3 mm-0.5 mm, when raw materials pass through the part between the opening die and the core rod in a molten state and after the core rod is reduced to the needed output inner diameter from the interior of the opening die in the sizing stage of a pipe, the inner diameter of the pipe is rubbed with the heat insulation sleeve, and the shaping degree of the inner diameter of the pipe is improved. In addition, when the horizontal extending section of the core rod is wrapped by the heat insulation sleeve, the temperature of the pipe can be gradually reduced, and the pipe outlet efficiency is effectively improved.
Description
technical field [0001] The invention relates to the field of extruder equipment, in particular to an extruder discharge die for improving the plasticity of pipes. Background technique [0002] The extruder is a necessary equipment for the production of plastic pipes. Its function is to melt the raw materials and extrude them, and then pass the extruder out of the mold and cooling equipment to shape the product. The existing extruder discharge mold includes an outer die and a mandrel that fits inside the die. The mandrel has a gradually decreasing radius and is kept at the same position as the die to maintain the shape of the inner diameter of the extrusion with a small inner diameter. Mold, at present, the mandrel shrinks from the inside of the die to the required output inner diameter and maintains a smooth state of horizontal extension. This kind of mandrel cannot achieve good shaping of the inner diameter of the pipe. Contents of the invention [0003] The technical pr...
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Login to View More IPC IPC(8): B29C47/20B29C47/88B29C48/09B29C48/32
CPCB29C48/09B29C48/908
Inventor 石宗强
Owner 天津市志强管业制造有限公司