CN213440811U

CN213440811U - Nozzle capable of preventing wire drawing

Info

Publication number: CN213440811U
Application number: CN202020997896.6U
Authority: CN
Inventors: 张国擎; 赵本根
Original assignee: Hangzhou Weiyao Environmental Protection Technology Co ltd
Current assignee: Hangzhou Weiyao Environmental Protection Technology Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-06-15
Anticipated expiration: 2030-06-03

Abstract

The utility model belongs to the technical field of injection molding machine part, a can prevent mouth that penetrates of wire drawing is disclosed, penetrate the mouth by penetrating mouth body portion and penetrate the mouth head and constitute, penetrate mouth head detachable and set up on the export of penetrating mouth body portion, penetrate to set up on the mouth head and extrude the hole, penetrate the mouth and set up a plurality of diameters the same and extrude the hole penetrate the mouth penetrate the runner butt joint of mouth and mould during, a plurality of extrude the scope that the hole all is located the runner of mould, the utility model discloses simple structure, convenient to use.

Description

Nozzle capable of preventing wire drawing

Technical Field

The utility model relates to a technical field of nozzle specifically is a can prevent penetrating mouth of wire drawing.

Background

Injection molding machines, also known as injection molding machines or injection molding machines, are called beer machines (p i j ī) in many factories and injection molded products are called beer pieces. It is a main forming equipment for making various shaped plastic products with thermoplastic plastics or thermosetting plastics by using plastic forming mould.

The forming process of a common screw injection molding machine comprises the following steps: granular or powdery plastic is firstly added into a machine barrel, the plastic is made into a molten state through the rotation of a screw and the heating of the outer wall of the machine barrel, then the machine carries out die assembly and the forward movement of an injection seat, a nozzle is made to be close to a sprue of a die, then pressure oil is introduced into an injection cylinder, the screw is made to advance, so that molten materials are injected into the closed die with lower temperature at higher pressure and higher speed, and after certain time and pressure maintenance (also called pressure maintaining) and cooling, the molten materials are solidified and molded, and then the die can be opened to take out products.

The wire drawing is a phenomenon that the front end of the main runner is not broken and stretches into a wire shape, and the biggest problem is that a formed product cannot fall off due to the wire drawing and is clamped by a mold, so that continuous forming cannot be performed. The better the drawability (the property of being able to elongate into filaments when stretched in a molten state) of the resin, the more severe the drawing will be, thus avoiding the occurrence of the phenomenon of drawing and effectively improving the production efficiency of the injection molding machine.

The common method for solving the wire drawing phenomenon is to reduce the temperature of a cylinder, reduce the temperature of a nozzle, reduce the temperature of a die, or accelerate the die opening speed and increase the die opening amount, so that the wire drawing can be reduced to a certain extent.

However, the above methods all require modification of the injection molding machine process, and have many modifications and large modification amount, and are not suitable for popularization in factories.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can prevent penetrating mouth of wire drawing, solve the problem of present nozzle wire drawing.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a can prevent nozzle of wire drawing, nozzle constitute by penetrating mouth body portion and penetrating mouth head, penetrate the detachable setting of mouth head on the exit end of penetrating mouth body portion, penetrate and set up on the mouth head and extrude the hole, penetrate the mouth and set up a plurality of diameters the same and extrude the hole penetrate the mouth when penetrating the runner butt joint of mouth and mould, a plurality of extrude the scope that the hole all is located the runner of mould.

Based on above-mentioned technical scheme, equalling divide into many with the single hole of extruding of original nozzle, a plurality of holes of extruding can extrude the melting material to the runner of mould in, when satisfying the purpose of the operation of moulding plastics, can also effectually prevent the emergence of wire drawing phenomenon, and then improved production efficiency.

Preferably, the extrusion holes are provided in three numbers.

Based on above-mentioned technical scheme, three extrusion holes reduce the processing degree of difficulty as preferred scheme, prevent that the effect of wire drawing is good.

Furthermore, the connecting lines of the centers of the three extrusion holes are connected end to form an equilateral triangle, and when the nozzle is in butt joint with the gate of the mold, the centers of the equilateral triangle and the gate of the mold are positioned on a horizontal straight line.

Based on the technical scheme, the centers of the three extrusion holes are positioned on three vertexes of the equilateral triangle, and the center of the equilateral triangle and the center of the gate of the mold are positioned on a horizontal straight line, so that when the nozzle extrudes molten materials into the gate of the mold, the molten materials are extruded more uniformly.

Drawings

FIG. 1 is a schematic view of a nozzle head of the present invention;

FIG. 2 is a side view of the nozzle head of the present invention;

fig. 3 is a schematic diagram of the present invention.

In the figure: an extrusion hole-1, a nozzle head-2 and a nozzle body-3.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element to which the present invention is directed must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to the drawings, the present invention provides an embodiment: the utility model provides a can prevent nozzle of wire drawing, nozzle set up a plurality of diameters the same extrude hole 1, nozzle of this embodiment sets up on the injection molding machine, nozzle of this embodiment by penetrate mouth body portion 3 and penetrate mouth head portion 2 and constitute, penetrate mouth head portion 2 detachable setting on the exit end of penetrating mouth body portion 3, penetrate and set up on the mouth head portion 2 and extrude hole 1, nozzle and the runner of mould when butt joint, a plurality of extrude the scope that hole 1 all is located the runner of mould, preferably, extrude hole 1 and be provided with threely, three the line end to end of the centre of a circle of extrusion hole 1 form equilateral triangle the nozzle and the runner of mould when butt joint, the center of equilateral triangle and the center of the runner of mould lie in a horizontal straight line. The sum of the areas of the three extrusion holes 1 is smaller than the gate area of the mold.

The working principle is as follows:

the injection molding machine extrudes 1 discharge in the hole through the three with the melting material, enter into the runner of mould, three strands of melting materials of extruding 1 production in the hole can enter into the runner fast, satisfy the operation requirement of moulding plastics, when stopping to extrude, because the melting materials divide into three strands, cooling rate is fast, compare in the single structure of extruding the hole of nozzle in the past, the central point that the melting materials in the single hole of extruding in the past put the cooling slowly, produce the wire drawing most easily, and three strands of melting materials are divided, avoid the emergence of wire drawing phenomenon.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a can prevent nozzle of wire drawing which characterized in that: penetrate the mouth by penetrating mouth body portion and penetrate the mouth head and constitute, penetrate the setting of mouth head detachable and on the exit end that penetrates mouth body portion, penetrate and set up on the mouth head and extrude the hole, penetrate the mouth and set up a plurality of diameters the same and extrude the hole penetrate the runner of mouth and mould when butt joint, it is a plurality of extrude the scope that the hole all is located the runner of mould.

2. The nozzle of claim 1, wherein the nozzle is adapted to prevent stringiness, and further comprising: the extrusion holes are three.

3. A nozzle as claimed in claim 2, wherein said nozzle is adapted to prevent stringiness, and wherein: the connecting lines of the centers of the three extrusion holes are connected end to form an equilateral triangle, and when the nozzle is in butt joint with the gate of the mold, the centers of the equilateral triangle and the gate of the mold are positioned on a horizontal straight line.