Filtering and pressure adjusting device special for tape casting equipment

Abstract

The invention discloses a filtering and pressure adjusting device special for tape casting equipment. The filtering and pressure adjusting device special for the tape casting equipment comprises a plate type melt filter of which the liquid inlet end communicates with an outlet of an extruding machine in a sealing mode, the liquid outlet end of the plate type melt filter is connected with a pressure preparing adjusting device with a flow adjusting channel through a flange, the pressure preparing adjusting device is provided with an installing hole communicating with the flow adjusting channel,an adjusting spindle used for blocking the flow adjusting channel is arranged in the installing hole in a penetrating mode, an opening of the installing hole is provided with an annular groove, and aflexible sealing ring installed on the adjusting spindle in a sleeving mode and a hard pressing sleeve used for fixedly pressing the flexible sealing ring are arranged in the annular groove; and the outer end of the hard pressing sleeve extends out of the annular groove and turned outwards to form an annular clamping edge, the portion, located on the outer side of the hard pressing sleeve, of theadjusting spindle is provided with an outer thread, an adjusting base used for fixedly pressing the annular clamping edge is screwed to the outer thread, and the adjusting base is fixed to the pressure preparing adjusting device through connecting bolts which are evenly distributed on the outer end face of the adjusting base in the circumferential direction. The filtering and pressure adjusting device special for the tape casting equipment has the advantages that the structure is simple and practical, the device cost and the machining cost are low, and operation is convenient.

Description

technical field [0001] The invention relates to the field of polymer material processing, in particular to a special filtering and pressure regulating device for casting equipment. Background technique [0002] Casting is a plastic film production process. The plastic raw material is plasticized and melted by an extruder to form a polymer melt, and then extruded through a molding die, cast in sheet form to the roller surface of the cooling roller, and cooled The roller is cooled, cooled, and shaped into a film, and finally the finished product is made after traction and edge trimming, and the finished product is rolled. After the plastic raw material is melted into a polymer melt by the extruder, it is often doped with some impurities that need to be removed. Therefore, the exit of the extruder of the casting equipment production line is often connected with a plate-type melt filter and filtered through the plate-type melt. filter to filter out the impurities in the polymer...

AI Technical Summary

Problems solved by technology

After the plastic raw material is melted into a polymer melt by the extruder, it is often doped with some impurities that need to be removed. Therefore, the exit of the extruder of the casting equipment production line is often connected with a plate-type melt filter and filtered through the plate-type melt. filter to filter out the impurities in the polymer melt, and then send the clean polymer melt into the molding die for subsequent work; the existing plate-type melt filter installed at the exit of the extruder directly The liquid end is connected to the forming mold, and the flow rate of the filtered polymer melt is fixed, and the flow rate cannot be changed, so that it cannot be adjusted according to the temperature and pressure requirements during the production and synthesis of different polymer materials, resulting in a single production line. Manufacturing companies need to spend a lot of money to purchase multiple expensive production lines (the price of each production line is more than 10 million yuan) in order to produce products of different materials. The idle rate of the production line is very high

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