eva film extruder with feeding hydraulic adjustment function
A kind of extruder and hydraulic technology, which is applied in home appliances, other home appliances, applications, etc., can solve the problems of small changes in material supply, cannot adapt to fluctuations in molten resin production, and is not suitable for large-scale changes, so as to achieve the goal of changing the supply Effect
Inactive Publication Date: 2016-01-20
江苏益圆居品制造有限公司
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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 with feed hydraulic pressure adjustment function of the present embodiment, 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] On the inner wall of the opening of the supply hopper 3 are fixed two semi-ellipsoidal opposite elastic diaphragms 5 . A flow sensor 6 for generating material flow information is provided at the outlet of the die head 4 , and a hydraulic motor 7 is provided outside the supply hopper 3 for driving the elastic diaphragm 5 to expand and contract after receiving the material flow information. A material passage 5-1 is forme...
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The invention relates to an EVA film extruder with the function of hydraulic pressure adjustment for materials, and belongs to the technical field of plastic extrusion molding. The EVA film extruder includes a main barrel, an extrusion screw inside the main barrel and a drive motor for driving the extrusion screw to rotate. The feeding end of the main barrel is provided with a feeding hopper, and the bottom of the feeding hopper is made into a cone top. It is downwardly conical and has an opening at the top of the cone. The discharge end of the main barrel is provided with a die head, and the inner wall of the opening of the supply hopper is fixed with two semi-elliptical elastic diaphragms opposite to each other. A flow sensor for generating material flow information is installed at the outlet of the head, and a hydraulic motor is installed outside the supply hopper for receiving the material flow information and driving the elastic diaphragm to expand and contract, and a material passage is formed between the two elastic diaphragms. The EVA film extruder has the advantages of greatly changing the feed to the extruder in a short period of time and adapting to the requirements of fluctuations in the production of molten 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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IPC IPC(8): B29C47/10B29C47/92B29C48/92
CPCB29C48/92B29C48/285B29C48/286B29C48/288B29C2948/92209B29C2948/92895B29C2948/92409B29C2948/92828B29C2948/92161B29C2948/92657B29K2023/083B29L2007/008B29C2948/92104B29C2948/926B29C2948/92904
Inventor 顾正忠陈忠斌
Owner 江苏益圆居品制造有限公司