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Differential type extruder and molding technique thereof

An extruder, differential technology, applied in the field of extruder and its molding process, can solve the problems of difficult to extrude products stably, difficult to ensure product accuracy, and unable to work normally. The effect of high difficulty and limited service life

Active Publication Date: 2012-10-17
BEIJING UNIV OF CHEM TECH
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Problems solved by technology

However, due to the influence of the processing error of each cavity mold and the fluctuation of extrusion process parameters, the accuracy of the product is difficult to guarantee. If there is a problem in one cavity, all the cavities cannot work normally. Products with the same cross-section but different cross-sections are difficult to extrude stably

Method used

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  • Differential type extruder and molding technique thereof
  • Differential type extruder and molding technique thereof
  • Differential type extruder and molding technique thereof

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Embodiment Construction

[0020] Differential extruder of the present invention such as figure 1 , figure 2 , image 3 As shown, it is mainly composed of an extrusion system (1) and a metering and splitting system (2). The extrusion system (1) is the same as that of a conventional extruder, mainly including a screw (1-1), a barrel (1-2) , heating and cooling system (1-3), feeding device (1-4), and transmission system (1-5); metering and splitting system (2) includes planetary gear pump (2-2), support (2-4) , shaft coupling (2-5), rotation control device (2-6), temperature control device (2-3), metering and splitting system (2) is set at the outlet end of extrusion system (1), and rotation control device (2 -6) The output shaft is connected with the driving gear shaft (2-11) of the planetary gear pump (2-2) through a coupling (2-5), and the planetary gear pump (2-2) has a main inlet (2-7 ) and multiple outlets (2-12), the main inlet (2-7) is connected to multiple inlet branches (2-8), and each inlet...

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Abstract

The invention relates to a differential type extruder and a molding technique thereof. The differential type extruder mainly comprises an extrusion system and a measuring and shunting system, the extrusion system is just like a conventional extruder, the measuring and shunting system comprises a planetary gear pump, a coupling, a rotation controller and a temperature controller, and is arranged at the outlet of the extrusion system, the output shaft of the rotation controller is connected with a drive gear shaft of the planetary gear pump through the coupler, the drive gear shaft drives a drive gear and small gears to rotate, the planetary gear pump is provided with a main inlet and a plurality of outlets, each inlet branch is provided with a corresponding outlet after passing through theplanetary gear pump, and the outlets are respectively connected with a corresponding head. The differential type extruder and the molding technique thereof not only can utilize an extruder with a plurality of heads to simultaneously produce same or different products in batches, but also can produce miniature extruded products in batches and at low cost, and moreover, the differential type extruder and the molding technique have the advantages of high plasticizing capacity, high mixing performance and high control measurement precision.

Description

technical field [0001] The invention relates to the technical field of extrusion molding equipment, in particular to an extruder and its molding process capable of simultaneously mass-producing the same or different types of extrusion molding products and micro extrusion molding products. Background technique [0002] Extrusion molding occupies a very important position in the plastic product molding processing industry. According to statistics, in the molding and processing of plastic products, the output of extrusion molding products ranks first. Compared with other molding methods, extrusion molding has the characteristics of continuous production, high productivity, wide application, low investment and quick return. With the wide application and development of plastic extrusion molding technology, the types of extruders are increasing. [0003] With the advancement of science and technology, products continue to develop in the direction of miniaturization, resulting in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/70B29C47/92B29C48/37B29C48/44B29C48/92
CPCB29C47/364B29C48/92B29C2948/92704B29C48/37B29C2948/9259B29C2948/92904B29C2948/92961B29C48/44
Inventor 杨卫民王建丁玉梅谢鹏程安瑛刘勇阎华
Owner BEIJING UNIV OF CHEM TECH
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