Visual polymer micro-extrusion mold

A technology for extruding molds and polymers, which is applied in the field of visual micro-extrusion molds, can solve problems that have not been reported, and achieve the effect of avoiding easy breakage

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A technology for extruding molds and polymers, which is applied in the field of visual micro-extrusion molds, can solve problems that have not been reported, and achieve the effect of avoiding easy breakage

CN101712197AInactive Publication Date: 2010-05-26DALIAN UNIV OF TECH

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[0014] Specific embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.

[0015] Use A heating ring 2, B heating ring 3, C heating ring 7, D heating ring 8, and E heating ring 11 to heat the mold so that the temperature of each area of the mold reaches the set value. The temperature in the extrusion process is kept constant by controlling the A temperature sensor 15, B temperature sensor 17, C temperature sensor 20, and D temperature sensor 22 installed on the connecting pipe 1, the nose body 4 and the visual die 12. Under the action of the extruder screw, the polymer melt flows into the head body 4 from the connecting pipe 1, enters the flow channel through the splitter cone 21, and then under the joint action of the mandrel 14 and the visual die 12, the melt cross section The shape is gradually compressed to meet the design requirements, and is extruded from the exit of the visible die 12 . ...

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Abstract

The invention discloses a visual polymer micro-extrusion mold and belongs to the technical field of polymer micro-extrusion molds. The visual polymer micro-extrusion mold is characterized in that the visual mold consists of a connecting pipe, a heating ring, a handpiece body, an adjusting bolt, a positioning pin, a baffle, a fastening bolt, a visual neck ring mold, a pressure / temperature sensor, a core rod, a gasket, a temperature sensor, a ventilating bolt, a support plate, a spure spreader and a flange. The spure spreader, the core rod and the neck ring mold with different structural parameters are respectively exchanged according to the need; coaxiality and clearance between the core rod and the visual neck ring mold are adjusted by the method of fixing the visual neck ring mold and adjusting the core rod; the visual neck ring mold is used for observing the flow state in the micro-extrusion mold of polymer melt; the pressure / temperature sensor is used for measuring pressure and temperature of straight section of the polymer melt; and the heating ring and the temperature sensor are used for controlling temperature of the micro-extrusion mold. The visual polymer micro-extrusion mold obtains flow distribution, flow characteristics and wall slip velocity of the polymer melt in the flow channel by the visual neck ring mold.

Description

technical field [0001] The invention belongs to the technical field of polymer micro-extrusion dies, and relates to a visualized micro-extrusion die for observing the flow field distribution and wall sliding velocity of polymer melt in a micro flow channel. Background technique [0002] The flow process of polymer melt in the micro-channel of extrusion die has always been a key issue in the research of die design and polymer rheology. Traditional research methods can only infer the flow process of polymer melt in micro-channels through input and output parameters, such as temperature, viscosity, pressure, etc., and cannot directly describe the real flow behavior of polymers in the channel. The guiding role of the mold structure design is limited. [0003] Micro-extrusion die is the key equipment in the whole micro-extrusion molding process of plastic melt. At present, when designing micro-extrusion dies, due to the incomplete rheological theory of polymers under the micro-...

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Application Information

Patent Timeline

26 May 2010

Publication

CN101712197A

IPC: B29C47/08; B29C47/12; B29C47/92; B29C48/92; B29C48/30

CPC: B29C48/92; B29C2948/92209; B29C2948/92409; B29C2948/92704; B29C2948/92019; B29C2948/92514; B29C2948/92904

Inventors: 赵丹阳; 金翼飞