CN206124122U - A open some runner nozzle head for hot runner system - Google Patents

Abstract

The utility model discloses an open some runner nozzle head for hot runner system, be in including nozzle head runner sheath (1) and setting nozzle head water conservancy diversion needle (2) in the nozzle head runner sheath (1), does nozzle head runner sheath (1) have the material and says (1 1 ), does the material say (1 1 )Do both ends set up feed inlet (1 respectively from top to bottom 2 )And discharge gate (1 3 ), nozzle head water conservancy diversion needle (2) upper end is fixed feed inlet (1 2 )And the lower extreme wear to establish to discharge gate (1 3 ), nozzle head water conservancy diversion needle (2) outer wall with feed inlet (1 2 )A plurality of punishment in advance holes have between the inner wall, runner (5) phase -match on nozzle head runner sheath (1) lower extreme and die cavity (4). The utility model provides a problem of runner wire drawing, curtain coating can be solved to the nozzle head, improves the life of runner simultaneously.

Description

For the open pin-point gate nozzle head of TOP-TIP

Technical field

This utility model belongs to injection mold technical field, and in particular to a kind of open hole irrigation for TOP-TIP Mouth nozzle head.

Background technology

Hot runner Technology is a kind of advanced technology for being applied to plastics injection mould flow passage system, is injection molding work One focus direction of skill development, TOP-TIP can save material well for injection mo(u)lding, while molding can also be shortened Cycle.Open TOP-TIP is low due to price, and mould processing is simple, therefore by client's wide selection.Open hot flow path The nozzle head of system is the core component of TOP-TIP, and general open runner nozzle head can be produced in injection molding process Raw one section of cold burden handle, this cold burden handle needs to be removed in the following process of product, while also generating waste material.General is open Runner nozzle head can not be widely used in various types of plastics, be also easy to produce cast gate wire drawing, curtain coating etc. in injection moulding process Defect, causes normally to be produced.Remove the cold burden handle of open cast gate, it is to avoid the wire drawing of cast gate and curtain coating defect are split The formula TOP-TIP of putting is significant.

Utility model content

Based on the problems referred to above, this utility model purpose is to provide a kind of open spot pouring mouth for TOP-TIP to spray Mouth, it can solve the problems, such as cast gate wire drawing, curtain coating.

In order to solve these problems of the prior art, the technical scheme that this utility model is provided is：

For the open pin-point gate nozzle head of TOP-TIP, including nozzle head cast gate sheath and it is arranged on the nozzle Nozzle head stream guidance needle in head cast gate sheath, the nozzle head cast gate sheath has material road, and the material road upper and lower ends set respectively Charging aperture and discharging opening are put, the nozzle head stream guidance needle upper end is fixed on the charging aperture and lower end is worn to the discharging opening, There is multiple material paths, the nozzle head cast gate sheath lower end between the nozzle head stream guidance needle outer wall and the charging aperture inwall Match with the cast gate on die cavity.

In some embodiments wherein, the nozzle head stream guidance needle upper end is stretched out on the nozzle head cast gate sheath End, the nozzle head stream guidance needle lower end flushes with the nozzle head cast gate sheath lower end.

In some embodiments wherein, the material road includes cylindrical section and the reverse taper section arranged up and down.

In some embodiments wherein, the nozzle head cast gate sheath is threadedly coupled with nozzle body.

In some embodiments wherein, the nozzle head cast gate sheath outer wall top is provided with for shelving nozzle body Step surface.

In some embodiments wherein, the nozzle head cast gate sheath outer wall bottom be provided with the die cavity cast gate The snap-latch surface of cooperation.

Relative to scheme of the prior art, the utility model has the advantages that：

1st, technical solutions of the utility model are adopted, the nozzle head will not produce cold burden handle in injection molding process, can Solve the problems, such as cast gate wire drawing, curtain coating；

2nd, adopt technical solutions of the utility model, nozzle head to carry cast gate sheath, cast gate service life can be improved, be molded into Cast gate steady quality during type, and the processing of cast gate at die cavity can be simplified.

Description of the drawings

In order to be illustrated more clearly that the technical scheme of this utility model embodiment, below will be to wanting needed for embodiment description The accompanying drawing for using is briefly described, it should be apparent that, drawings in the following description are only some enforcements of the present utility model Example, for those of ordinary skill in the art, on the premise of not paying creative work, can be being obtained according to these accompanying drawings Obtain other accompanying drawings.

Fig. 1 is the structural representation of the open pin-point gate nozzle head embodiment that this utility model is used for TOP-TIP；

Fig. 2 is the use state schematic diagram of this utility model embodiment；

Wherein：

1st, nozzle head cast gate sheath；1-1, material road；1-2, charging aperture；1-3, discharging opening；1-4, step surface；1-5, engaging Face；

2nd, nozzle head stream guidance needle；

3rd, nozzle body；

4th, die cavity；

5th, cast gate；

6th, core.

Specific embodiment

Such scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are for illustrating This utility model and be not limited to limit scope of the present utility model.The implementation condition adopted in embodiment can be according to concrete producer Condition do further adjustment, not marked implementation condition is usually the condition in normal experiment.

It is the structural representation of this utility model embodiment referring to Fig. 1-2, there is provided a kind of opening for TOP-TIP Formula pin-point gate nozzle head, it includes nozzle cage cast gate sheath 1 and the nozzle head stream guidance needle 2 being arranged in nozzle head cast gate sheath 1, Nozzle head cast gate sheath 1 has material road 1-1, and the material road 1-1 upper and lower side is respectively provided with charging aperture 1-3 and discharging opening 1-4, nozzle head The upper end of stream guidance needle 2 is fixed on charging aperture 1-2 and lower end is worn to discharging opening 1-3, the outer wall of nozzle head stream guidance needle 2 and charging aperture 1-2 There are multiple material paths, the lower end of nozzle head cast gate sheath 1 matches with the cast gate 5 on die cavity 4, i.e. nozzle head cast gate between inwall The lower end of sheath 1 is fitted on the inwall of cast gate 5.

In this example, the upper end of nozzle head cast gate sheath 1, the lower end of nozzle head stream guidance needle 2 and spray are stretched out in the upper end of nozzle head stream guidance needle 2 The lower end of mouth cast gate sheath 1 flushes.

Material road 1-1 includes cylindrical section and the reverse taper section arranged up and down, and the diameter of discharging opening 1-3 is less than charging aperture 1-2.

When using, nozzle head cast gate sheath 1 is arranged on the bottom of nozzle body 3, nozzle head cast gate sheath 1 and nozzle body It is threadedly coupled between 3.

In order to further optimize implementation result of the present utility model, the outer wall top of nozzle head cast gate sheath 1 be provided with In the step surface 1-4 for shelving nozzle body 3, in order to the installation of nozzle head, and the stability of nozzle is improved.

In order to further optimize implementation result of the present utility model, it is provided with and type in the outer wall bottom of nozzle head cast gate sheath 1 Chamber 4 locate with one voice coordinate snap-latch surface 1-5, in order in injection moulding process to the fixation of nozzle head.

In injection molding process, the plastics of melting lean on injection pressure from nozzle body 3 through nozzle head stream guidance needle 2 and nozzle Material path between head cast gate sheath 1, and the discharging opening 1-3 of the lower end of nozzle head cast gate sheath 1 is arranged on, flow in core 6, After molten plastic fills up die cavity 4 and core 6, injection pressure is removed, and through the cooling of certain hour, product is completed with regard to molding , then mould open, product is removed, and then mould closes up again, and a molding cycle terminates.

In injection moulding process, nozzle head stream guidance needle 2 extends to the position of cast gate 5, does not have cold burden handle completely, by controlling nozzle head The temperature of the needle point of stream guidance needle 2, just can well control the temperature of cast gate 5.Stopping injection, when injection pressure is removed, cast gate is just Good solidification, the plastics of melting would not be flowed out, and now cast gate 5 stops mould filling.When injection is started, apply injection pressure Power, the cast gate 5 for originally solidifying is rushed to open, and molten plastic begins to be flowed into core 6 and die cavity 4 from cast gate 5, starts injection and fills out Fill.So by the temperature of the needle point of control nozzle head stream guidance needle 2, with injection pressure during synthesis type, just can control well to pour The opening and closing of mouth 5.

Examples detailed above only to illustrate technology design of the present utility model and feature, its object is to allow and be familiar with technique People is to will appreciate that content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.It is all The equivalent transformation done according to this utility model spirit or modification, all should cover protection domain of the present utility model it It is interior.

Claims (6)

1. the open pin-point gate nozzle head of TOP-TIP is used for, it is characterised in that：Including nozzle head cast gate sheath (1) and set The nozzle head stream guidance needle (2) in the nozzle head cast gate sheath (1) is put, the nozzle head cast gate sheath (1) is with material road (1- 1), material road (1-1) upper and lower ends are respectively provided with charging aperture (1-2) and discharging opening (1-3), the nozzle head stream guidance needle (2) Upper end is fixed on the charging aperture (1-2) and lower end is worn to the discharging opening (1-3), nozzle head stream guidance needle (2) outer wall There are multiple material paths between the charging aperture (1-2) inwall, on nozzle head cast gate sheath (1) lower end and die cavity (4) Cast gate (5) match.

2. the open pin-point gate nozzle head for TOP-TIP according to claim 1, it is characterised in that：The spray Nozzle head cast gate sheath (1) upper end is stretched out in mouth stream guidance needle (2) upper end, nozzle head stream guidance needle (2) lower end with it is described Nozzle head cast gate sheath (1) lower end flushes.

3. the open pin-point gate nozzle head for TOP-TIP according to claim 1, it is characterised in that：The material Road (1-1) includes cylindrical section and the reverse taper section arranged up and down.

4. the open pin-point gate nozzle head for TOP-TIP according to claim 1, it is characterised in that：The spray Mouth cast gate sheath (1) is threadedly coupled with nozzle body (3).

5., according to the arbitrary described open pin-point gate nozzle head for TOP-TIP of Claims 1-4, its feature exists In：Nozzle head cast gate sheath (1) the outer wall top is provided with the step surface (1-4) for shelving nozzle body (3).

6. the open pin-point gate nozzle head for TOP-TIP according to claim 5, it is characterised in that：The spray Mouth cast gate sheath (1) outer wall bottom is provided with and the snap-latch surface (1-5) coordinated at the die cavity (4) cast gate.