EVA film extruder with feed rapid bidirectional adjusting function
A two-way adjustment, extruder technology, applied in the field of plastic extrusion molding, can solve the problems of not suitable for large changes, inability to adapt to fluctuations in molten resin production, and small changes in material supply.
Active Publication Date: 2014-02-19
杭州东光科技有限公司
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Problems solved by technology
[0004] The applicant found that feeding the extruder through the hopper mainly feeds the extruder through the gravity of the material in the hopper, and the fluctuation of the feeding is small, so it is not suitable for a large change in the function of feeding the extruder in a short period of time. , cannot adapt to the requirements of fluctuations in molten resin production
Method used
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Embodiment
[0015] The EVA film extruder of present embodiment has the fast two-way adjustment function of feeding, as figure 1 As shown, it includes a main cylinder 1, an extrusion screw disposed in the main cylinder 1 and a drive motor 2 for driving the extrusion screw to rotate. The feeding end of the main cylinder 1 is provided with a feed hopper 3 , the bottom of the feed hopper 3 is shaped as a cone with the top of the cone downward and is shaped with an opening at the top of the cone, and the discharge end of the main cylinder 1 is provided with a die 4 .
[0016] An additional feed cylinder 10 is connected to the bottom of the feed hopper 3, and two vane wheels 5 fixed on the same rotating shaft are arranged at the through opening where the additional feed cylinder 10 intersects with the bottom of the feed hopper 3. A flow sensor 6 for generating material flow information is provided at the outlet of the die head 4, and an adjusting motor 7 is provided outside the supply hopper 3 ...
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The invention relates to an EVA film extruder with feed rapid bidirectional adjusting function, and belongs to the technical field of extrusion molding of plastic. The EVA film extruder comprises a main barrel, an extrusion screw arranged in the main barrel and a driving motor for driving the extrusion screw to rotate; the charging end of the main barrel is provided with a feed hopper; the bottom of the feed hopper is shaped of a cone with a downward cone node, and is provided with an opening at the cone node; the discharging end of the main barrel is provided with a mold head; the bottom of the feed hopper is connected with an additional feed barrel, and the intersection through port of the additional feed barrel and the feed hopper bottom is provided with two blade wheels fixedly disposed at a same rotation shaft; the opening of the mold head is provided with a flow sensor for generating material flow information; and the outside of the feed hopper is provided with an adjusting motor for driving the two blade wheels to rotate forward or reversely after the material flow information is received. The EVA film extruder has the advantages of being capable of substantially changing extruder feed in a short time and being adaptive to production fluctuation requirement on fusion resin.
Description
technical field [0001] The invention relates to an EVA film extruder, which belongs to the technical field of extrusion molding of plastics. Background technique [0002] At present, the encapsulation of solar cells generally adopts ethylene-vinyl acetate copolymer (EVA) film to encapsulate the solar cells, and glues them together with upper and lower protective materials to form a solar cell module. EVA is a typical random polymer compound. It has good wettability when heated and melted, and good flexibility, stress crack resistance and bonding performance when cooled and solidified. It is an ideal energy-saving material. materials for solar cell packaging. [0003] EVA film forming adopts extrusion molding process. The whole production line usually includes mixing equipment, extrusion equipment, lamination device, trimming unit and winding equipment to complete mixing, feeding, extrusion, forming, trimming, Winding process. Among them, the extrusion equipment is the mai...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B29C47/10B29C47/92B29C48/92
CPCB29C48/297B29C48/92B29C48/288B29C2948/92828B29C2948/92409B29C2948/92104B29C2948/92895B29C2948/9259B29C2948/92161B29C2948/92209B29L2007/008B29C2948/926B29C2948/92904
Inventor 顾正忠陈忠斌
Owner 杭州东光科技有限公司