CN211763173U

CN211763173U - Novel nozzle core

Info

Publication number: CN211763173U
Application number: CN201922297534.6U
Authority: CN
Inventors: 邱玉锋
Original assignee: Shenzhen Zhenxiong Mould Parts Co ltd
Current assignee: Shenzhen Zhenxiong Mould Parts Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-10-27
Anticipated expiration: 2029-12-19

Abstract

The utility model relates to a novel nozzle core, which consists of an inner layer and an outer layer; a pouring runner is arranged inside the inner layer; the inner layer comprises a nozzle core head section and a pouring runner section, and the outer layer is coated on the outer side of the pouring runner section; the inner side surface of the outer layer is provided with a convex buckle; a limiting groove matched with the outer layer is arranged on the bottom surface of the nozzle core head section around the pouring runner section; an L-shaped groove matched with the convex buckle is arranged on the outer side surface of the pouring runner section, and the longitudinal end of the L-shaped groove extends downwards to the lower end of the pouring runner section; the spring is arranged in the limiting groove and used for pressing the top end of the outer layer, and an upper rod and a lower rod are respectively arranged at the upper end and the lower end of the spring; the limiting groove still is equipped with the last fixed orifices of cooperation upper boom, and outer top is equipped with the lower fixed orifices of cooperation lower boom, the utility model provides a core is chewed because of need collect excellent thermal conductivity and high corrosion resistance in an organic whole and cause costly problem to ordinary, has also increased the practicality of chewing the core simultaneously moreover, reduces the later maintenance cost.

Description

Novel nozzle core

Technical Field

The utility model relates to a mould technical field that moulds plastics, in particular to novel chew core.

Background

Injection molds can be divided into cold runner molds and hot runner molds according to the gating system. The hot runner system in the hot runner mold mainly comprises a hot nozzle core, a flow distribution plate, a temperature control box and other accessories. The types of hot nozzles are generally classified into needle-point type hot nozzles and needle-valve type hot nozzles. Compared with a needle point nozzle, the needle valve nozzle has the advantages of small gate trace of a produced product, better surface quality and the like, so the needle valve type heat nozzle is widely applied, a nozzle core made of common materials can be normally applied when aiming at materials with better fluidity and lower corrosivity, but when the needle valve type heat nozzle meets the materials with stronger corrosivity and poor fluidity, the internal abrasion and corrosion of the nozzle core are increased, and when the nozzle core is damaged, the whole nozzle core must be replaced, so the cost is greatly increased; meanwhile, the nozzle core is required to have good heat conductivity and strong wear resistance, so that the material cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel core of chewing to prior art not enough, this novel core of chewing can solve above-mentioned problem well.

In order to meet the above requirements the utility model provides a technical scheme that its technical problem adopted is:

providing a novel chewing core which consists of an inner layer and an outer layer; a pouring runner is arranged inside the inner layer; the inner layer comprises a nozzle core head section and a pouring runner section, and the outer layer is coated on the outer side of the pouring runner section; the inner side surface of the outer layer is provided with a convex buckle; a limiting groove matched with the outer layer is arranged on the bottom surface of the nozzle core head section around the pouring runner section; an L-shaped groove matched with the convex buckle is arranged on the outer side surface of the pouring runner section, and the longitudinal end of the L-shaped groove extends downwards to the lower end of the pouring runner section; the spring is arranged in the limiting groove and used for pressing the top end of the outer layer, and an upper rod and a lower rod are respectively arranged at the upper end and the lower end of the spring; the limiting groove is also internally provided with an upper fixing hole matched with the upper rod, and the top end of the outer layer is provided with a lower fixing hole matched with the lower rod.

The novel nozzle core of the utility model is provided with a plurality of L-shaped grooves and a plurality of convex buckles; a plurality of L shape recesses encircle the outside surface evenly distributed of pouring runner section.

The novel chewing core, wherein, the upper rod and the lower rod are all parallel to the axle center of the spring.

The novel chewing core, wherein, the upper fixing hole is arranged on the bottom surface of the spacing groove, and the lower fixing hole is arranged on the outer upper surface.

The novel nozzle core of the utility model has the inner layer made of tungsten steel and the outer layer made of beryllium copper.

The novel nozzle core, wherein, the lower extreme of pouring runner section is the infundibulate.

The beneficial effects of the utility model reside in that: the utility model discloses a novel chewing core, compare with ordinary integral type chewing core, the invention sets up into bilayer structure, when selecting for use the inlayer material, mainly require it to have good corrosion resistance can, for example can be tungsten steel, S136, 8407, PAK90, 718S, 718H etc.; when the outer layer material is selected, the material is mainly required to have good thermal conductivity, and can be beryllium copper, molybdenum alloy and the like; compared with the original requirement of good heat conductivity and strong abrasion resistance, the material cost can be greatly reduced; and outer and inlayer pass through L shape recess and protruding buckle cooperation and then closely laminating be in the same place, have avoided hot-conductive loss, and the spring that sets up on outer top can prevent outer droing, only need change inlayer or skin when heating temperature to different materials or difference can, do not need whole change to chew the core body, the maintenance is torn open and is traded simply.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the drawings:

figure 1 is a sectional view of the novel chewing core of the utility model.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is an enlarged view at B in fig. 1.

Fig. 4 is a bottom view of the inner layer of the chewing core of the utility model.

Fig. 5 is a cross-sectional view of the outer layer of the chewing core of the present invention.

Fig. 6 is a schematic view of the spring of the nozzle core of the present invention.

Fig. 7 is a cross-sectional view of the whole structure of the nozzle core of the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of protection of the present invention.

The novel mouth core of the preferred embodiment of the utility model, as shown in fig. 1-7, is composed of an inner layer 100 and an outer layer 1; a pouring runner 2 is arranged in the inner layer 100; the inner layer 100 comprises a nozzle core head section 3 and a pouring runner section 4, and the outer layer 1 is coated on the outer side of the pouring runner section 4; the inner side surface of the outer layer 1 is provided with a convex buckle 5; a limiting groove 6 matched with the outer layer 1 is arranged on the bottom surface of the nozzle core head section 3 around the pouring runner section 4; an L-shaped groove 7 matched with the convex buckle 5 is arranged on the outer side surface of the pouring runner section 3, and a longitudinal end 8 of the L-shaped groove 7 extends downwards to the lower end of the pouring runner section 4; the upper end and the lower end of the spring 9 are respectively provided with an upper rod 10 and a lower rod 11; the limiting groove 6 is also internally provided with an upper fixing hole 12 matched with the upper rod 10, the top end of the outer layer 1 is provided with a lower fixing hole 13 matched with the lower rod 11, compared with the common integrated nozzle core, the nozzle core is arranged into a double-layer structure, and when the material of the inner layer 100 is selected, the nozzle core is mainly required to have good corrosion resistance, such as tungsten steel, S136, 8407, PAK90, 718S, 718H and the like; when the material of the outer layer 1 is selected, the material is mainly required to have good thermal conductivity, and can be beryllium copper, molybdenum alloy and the like; compared with the original requirement of good heat conductivity and strong abrasion resistance, the material cost can be greatly reduced; and outer 1 and inlayer 100 pass through L shape recess 7 and protruding buckle 5 cooperation and then closely laminating be in the same place, have avoided hot-conductive loss, and the spring 9 that sets up on outer 1 top can prevent droing of outer 1, only need change inlayer 100 or outer 1 when heating temperature to different materials or difference can, do not need whole change to chew the core body, the maintenance is torn open and is traded simply.

Preferably, the L-shaped grooves 7 and the raised buckles 5 are provided in plurality; a plurality of L shape recess 7 encircle the outside surface evenly distributed of pouring runner section 4, and a plurality of L shape recess rings 7 distribute around the outside of pouring runner section 4, and this atress is more even when making outer 1 fix on inlayer 100, fixes more stably, and here recess is not limited to the L shape.

Preferably, the upper rod 10 and the lower rod 11 are parallel to the axis of the spring 9 for mounting the spring, and the upper rod 10 and the lower rod 11 can be arranged at other angles, and parallel to the axis of the spring 9 is the best solution, and the spring 9 can be replaced by a torsion spring.

Preferably, an upper fixing hole 12 is formed on the bottom surface of the limiting groove 6, a lower fixing hole 13 is formed on the upper surface of the outer layer 1, and the upper fixing hole 12 and the lower fixing hole 13 are respectively matched with an upper rod 10 and a lower rod 11 on the spring so as to fix the outer layer in the L-shaped groove 7.

Preferably, the inner layer 100 is made of tungsten steel, the outer layer 1 is made of beryllium copper, and the thermal conductivity of beryllium copper is best in tungsten steel, S136, 8407, PAK90, 718S and 718H; tungsten steel and molybdenum alloys have the best wear resistance and corrosion resistance, distinguished by corrosion resistance and wear resistance.

Preferably, the lower end of the pouring channel section 4 is funnel-shaped, and the funnel-shaped structure is convenient for matching with a valve needle to control the material outflow, and can prevent the bottom end of the inner layer 100 from being blocked due to the solidification of the material which is heated unevenly.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. A novel chewing core is characterized by comprising an inner layer and an outer layer; a pouring runner is arranged inside the inner layer; the inner layer comprises a nozzle core head section and a pouring runner section, and the outer layer is coated on the outer side of the pouring runner section; the inner side surface of the outer layer is provided with a convex buckle; a limiting groove matched with the outer layer is arranged on the bottom surface of the nozzle core head section around the pouring runner section; an L-shaped groove matched with the convex buckle is arranged on the outer side surface of the pouring runner section, and the longitudinal end of the L-shaped groove extends downwards to the lower end of the pouring runner section; the spring is arranged in the limit groove and used for pressing the top end of the outer layer, and an upper rod and a lower rod are respectively arranged at the upper end and the lower end of the spring; the limiting groove is also internally provided with an upper fixing hole matched with the upper rod, and the top end of the outer layer is provided with a lower fixing hole matched with the lower rod.

2. The novel chewing core according to claim 1, wherein a plurality of L-shaped grooves and a plurality of convex buckles are provided; the plurality of L-shaped grooves are uniformly distributed around the outer side surface of the pouring runner section.

3. The novel chewing core of claim 1 wherein said upper bar and said lower bar are both parallel to the axis of said spring.

4. The novel chewing core according to claim 1, wherein the upper fixing hole is provided on the bottom surface of the limiting groove, and the lower fixing hole is provided on the upper surface of the outer layer.

5. The novel mouth core according to claim 1, wherein said inner layer is made of tungsten steel and said outer layer is made of beryllium copper.

6. The novel nozzle core according to claim 1 wherein the lower end of the pouring channel section is funnel shaped.