An extrusion molding die for online biaxially oriented plastic small-diameter pipes
A technology of biaxial orientation and extrusion molding, which is applied in the direction of tubular objects, household utensils, and other household utensils. The structure is simple and reasonable, the uniformity is improved, and the effect of improving physical and mechanical properties
Active Publication Date: 2019-05-07
RIFENG ENTERPRISE GRP CO LTD +1
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- Abstract
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- Claims
- Application Information
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Problems solved by technology
[0004] The present invention provides an extrusion molding die for online biaxially oriented plastic small-diameter pipes to solve the problems of poor coaxiality and uneven wall thickness of small-diameter pipes in the prior art or cannot be implemented at all. question
Method used
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[0026] The present invention will be described in detail below in conjunction with the accompanying drawings. The preferred embodiment of the invention is described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like parts throughout.
[0027] An extrusion molding die for online biaxially oriented plastic small-diameter pipes comprises a tube blank forming zone, a heat preservation zone and a bidirectional expansion zone; the tube blank forming zone, the heat preservation zone and the bidirectional expansion zone are sequentially connected.
[0028] further,
[0029] The tube blank forming area includes a mold body, a splitter cone, a mandrel support, a machine head body, a die, a coaxial adjustment screw, a mandrel, a heater; a thermocouple and a connecting screw, the mandrel and the mandrel support The inner channel is equipped with high temperature resistant and heat insulating hoses and joints.
[0030] The heat preservati...
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Abstract
The invention discloses an online biaxial orientation extrusion mold for a plastic small-caliber tube. The online biaxial orientation extrusion mold comprises a tube blank molding area, a heat preservation area and a bidirectional expanding area. The tube blank molding area, the heat preservation area and the bidirectional expanding area are sequentially connected. The tube blank molding area comprises a mold body, a sprue spreader, a core mold support, a machine head body, an opening mold, a coaxial adjusting screw, a core rod, heaters, thermocouples and connecting screws. A high-temperature resisting heat insulation hose and a joint are arranged in a channel in the core rod and a channel in the core mold support. According to the online biaxial orientation extrusion mold, axial stretching and radial stretching are carried out on the plastic small-caliber tube (the diameter of the core rod is smaller than 20 mm), the physical and mechanical performance of the plastic tube is improved, the strength and the tenacity of the plastic tube are greatly improved, the concentricity of the tube and the thickness evenness of the tube wall are improved, consumption of materials is greatly reduced, and the production cost is lowered.
Description
technical field [0001] The invention relates to an on-line biaxially oriented plastic extrusion molding die, in particular to an on-line biaxially oriented plastic small-caliber pipe extrusion molding die. Background technique [0002] When the thermoplastic pipe is extruded, the stretching in the axial and radial directions of the pipe is biaxial stretching. It has been proved by practice that the biaxially stretched pipe exhibits high physical and mechanical properties, greatly improves its strength and toughness, and greatly reduces the consumption of materials, so it has a wide range of applications. [0003] At present, most people use the on-line biaxial orientation extrusion molding die of the die drawing method. The die of this invention can produce pipes with relatively good strength and toughness, but the disadvantage of this invention is that: in the production of pipes with relatively small specifications When the diameter of the mandrel is small, the length is ...
Claims
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IPC IPC(8): B29C48/32B29C48/86B29L23/00
CPCB29C48/0018B29C48/09B29C48/30B29C48/32B29C48/865B29L2023/22
Inventor 李代叙李白千彭晓翊秦小梅陈涛
Owner RIFENG ENTERPRISE GRP CO LTD