Injection molding mechanism capable of evenly heating and efficiently plastifying

Abstract

The invention discloses an injection molding mechanism capable of evenly heating and efficiently plastifying. The injection molding mechanism comprises a heating screw rod (1), a heating cavity (2), a charging barrel (3) and a sprue bush connection end (4), and also comprises a rafael net (5), wherein the heating screw rod (1) is horizontally arranged inside the rafael net (5); one end of the rafael net is connected with a motor; the motor drives the rafael net (5) to rotate; the rotation direction of the rafael net (5) is reverse to that of the heating screw rod (1); a screw cooling water pipe is arranged on the outer surface of the lower end of the charging barrel (3); a conical baffle plate (6) of which the top and the bottom are communicated is arranged inside the heating cavity (2); the narrow end of the conical baffle plate (6) is communicated with the sprue bush connection end (4); the round edge of the wide end of the conical baffle plate (6) is connected with the heating cavity (2). The injection molding mechanism can fully agitate, the plastifying homogeneity is improved, the situation that the injection molding particles are fused in the charging barrel to block a discharge hole is avoided, the pressure at the end of the sprue bush is kept constant, and the actual injection molding amount is accurate.

Description

technical field [0001] The invention relates to the field of injection molding machine mechanical equipment, in particular to a uniform heating and high-efficiency plasticizing injection molding mechanism. Background technique [0002] Injection molding mechanism is an important equipment of injection molding machine. The plasticization and heating process of plastic is completed in the injection molding mechanism. The plasticization of the screw type depends on the combined effect of the heat supply of the external heater and the shear friction heat caused by the rotation of the screw type on the inside of the plastic. , the plasticizing property is better, but in the prior art, because the rotation speed of the heating screw is affected by the viscosity of the plastic solution and the safety angle, the rotation speed of the heating screw is low, and the plasticized plastic cannot be fully stirred, and the plasticized The uniformity is poor. In order to fully plasticize, so...

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Problems solved by technology

[0002] Injection molding mechanism is an important equipment of injection molding machine. The plasticization and heating process of plastic is completed in the injection molding mechanism. The plasticization of the screw type depends on the combined effect of the heat supply of the external heater and the shear friction heat caused by the rotation of the screw type on the inside of the plastic. , the plasticizing property is better, but in the prior art, because the rotation speed of the heating screw is affected by the viscosity of the plastic solution and the safety angle, the rotation speed of the heating screw is low, and the plasticized plastic cannot be fully stirred, and the plasticized Poor uniformity, in order to fully plasticize, some existing technologies increase the plasticizing efficiency and uniformity by increasing the length of the screw, but limited by the volume of the heating chamber, the effect of this design is not obvious, and the efficiency is low

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