A secondary heating energy-saving injection molding equipment

Abstract

The invention discloses a secondary-heating energy-saving injection molding glue shooting device, and belongs to the field of injection molding machines. The secondary-heating energy-saving injectionmolding glue shooting device comprises an injection molding glue shooting head body, the injection molding glue shooting head body comprises a mixing segment and a discharging segment, an assistant adding hopper is arranged between the mixing segment and the discharging segment, a special-shaped screw rod is arranged in the injection molding glue shooting head body and comprises a mixing screw rod, a special-shaped segment and a discharging screw rod, screw ribs are connected to surfaces of the mixing screw rod, the special-shaped segment and the discharging screw rod, the special-shaped segment is in a heat conduction hollow pipe shape, a secondary heating part is connected into the special-shaped segment, a common screw rod is changed into the special-shaped screw rod, the special-shapedscrew rod is in a multi-segment type, the secondary heating part is added on the optimal assistant adding part of the special-shaped screw rod, local heating is achieved, sufficient mixing of the assistant is accelerated, the conventional manner of lengthening the extruding stroke in the traditional technology is abandoned, and the energy-saving and efficient effects are achieved.

Description

technical field [0001] The invention relates to the field of injection molding machines, more specifically, to a secondary heating energy-saving injection molding equipment. Background technique [0002] The development of modern science and technology requires polymer materials to have comprehensive properties in many aspects. For example, some plastics are required to be high temperature resistant and easy to form and process; both high strength and good toughness are required; both excellent mechanical properties and certain special functions etc. It is difficult for a single polymer material to meet these high-performance requirements. In addition, the science of polymer materials has entered a relatively mature stage. It is very difficult to develop a new material, which is not only time-consuming and costly, but also the possibility Getting smaller and smaller. In contrast, the use of existing polymer materials for blending modification to prepare high-performance ma...

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Problems solved by technology

[0008] However, the screw rods in the injection molding equipment in the above-mentioned published patents are all integral, and can only play the function of extrusion. The materials in contact with the screw rods, that is, the materials far away from the heating wall and the materials close to the heating wall, are heated unevenly. During the extrusion process, the material is gradually heated evenly, but in the part where the additive is added, the uneven heating will lead to insufficient dispersion of the additive, and the extrusion of the material without being fully mixed with the material will seriously affect the extrusion quality of the material. People will choose to lengthen the subsequent extrusion stroke, but this will not only waste the equipment manufacturing cost, increase the volume of the equipment, but also prolong the discharge time and reduce the discharge efficiency

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