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Plastic multi-cavity tube micro-extrusion flow equilibrium detection apparatus

A flow balance and detection device technology, applied in the field of plastic extrusion molding, can solve the problems of wasting manpower and material resources, low design quality and design efficiency, prolonging the mold production cycle, etc., to reduce mold design and manufacturing costs, and reduce trial molds and the number of mold repairs, the effect of shortening the production cycle

Inactive Publication Date: 2010-08-11
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design quality and design efficiency of this method are low, a lot of manpower and material resources are wasted, and the mold production cycle is prolonged

Method used

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  • Plastic multi-cavity tube micro-extrusion flow equilibrium detection apparatus
  • Plastic multi-cavity tube micro-extrusion flow equilibrium detection apparatus
  • Plastic multi-cavity tube micro-extrusion flow equilibrium detection apparatus

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Embodiment Construction

[0011] The best embodiment of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.

[0012] When the thermoplastic polyurethane elastomer (TPU) is tested at a temperature of 190 ° C, the flow channel structure parameters of the extruded multi-lumen tube flow balance, the cross-section of the multi-lumen tube is shown in Figure 2, and the steps of the embodiment are as follows:

[0013] step 1

[0014] According to the cross-sectional size of the multi-cavity tube, select the splitter cone, core and die insert with certain structural parameters, and assemble them as shown in Figure 1. The splitter cone is installed on the top of the splitter bracket plate; the core is installed under the splitter bracket plate. Fixed by fastening screws; the die insert is mounted on the die backing plate.

[0015] step 2

[0016] Measure the gap between the die insert and the core, and continuously adjust the centering adju...

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Abstract

The invention discloses a flow balance detecting device for the micro-extrusion of plastic multi-cavity pipes, which belongs to the technical field of plastic extrusion molding. The detecting device is characterized in that the detecting device comprises a connecting base, a shunt cone, a shunt bracket plate, a core, a finish mold backing plate, a finish mold insert, a centring adjustment bolt, atemperature controller, a thermocouple and a heating ring; the shunt cone, the core and the finish mold insert on the detecting device are replaced according to the measurement results of the sectionshape-size of plastic melt after cooling and molding; the concentricity of the finish mold insert and the core is regulated through the centring adjustment bolt arranged on the finish mold backing plate; and the temperature controller, the thermocouple and the heating ring are used for controlling the required temperature of detection in the process of extruding and molding the plastic melt. The matching relation and change law among the section shape-size of multi-cavity pipes, the structural parameters of runners and extrusion process parameters during the micro-extrusion flow balance of the plastic melt is directly obtained through the detecting device, so as to establish a theory of designing micro-extrusion dies for the plastic multi-cavity pipes.

Description

technical field [0001] The invention belongs to the technical field of plastic extrusion molding, and in particular relates to the design of a micro-extrusion flow balance detection device for plastic multi-cavity tubes. Background technique [0002] At present, plastic multi-lumen tubes, especially medical multi-lumen interventional catheters, have the characteristics of small size, complex cross-sectional shape, high geometric accuracy, high hygienic indicators, and high biochemical stability. Shaped products. Due to the constraints of extrusion equipment, extrusion dies and supporting production technology, plastic multi-lumen interventional catheters are expensive, each ranging from tens to hundreds or thousands of dollars, which seriously restricts the research and clinical application of interventional medical technology. Extrusion die is the key equipment for micro-extrusion molding of plastic multi-cavity tubes, which directly determines the molding quality and prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29L23/00B29C47/92B29C47/20B29C48/92B29C48/32
CPCB29C48/09B29C48/92B29C2948/92209B29C2948/92409B29C2948/92704B29C2948/92904
Inventor 赵丹阳王敏杰宋满仓
Owner DALIAN UNIV OF TECH
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