CN2183866Y

CN2183866Y - Nozzle of injection molder

Info

Publication number: CN2183866Y
Application number: CN 93215873
Authority: CN
Inventors: 罗伯特·费尔
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-17
Filing date: 1993-05-17
Publication date: 1994-11-30
Anticipated expiration: 2003-05-17

Abstract

The utility model relates to a nozzle of injection molders. Plastics or other materials are squeezed into the mould of the injection molder by the nozzle which is provided with a rectangle which is provided with an inlet end, an outlet end and a smelt hole passage which longitudinally passes from the smelt inlet of the inlet end to the smelt outlet closed the outlet end. A nozzle cap is provided with a connecting part and a mould connecting part which is provided with at least one hole which can make the materials go into the mould. When the utility model is used, the connecting part of the nozzle cap is directly or indirectly connected to the rectangle to make a heat-insulated gap formed between the smelt outlet of the rectangle and the nozzle cap, and the nozzle cap and the rectangle are only connected to the connecting part or a nearby part.

Description

Nozzle of injection molder

The utility model relates to a kind of nozzle, can will be in a liquid state substantially or plastics or other material of semi liquid state or fusing are clamp-oned in the mould of injector by this nozzle.

In injection moulding, use heated nozzle can eliminate slag, reduce circulation timei.This nozzle is transferred to the plastics of fusion the cavity or type mouth of mould from the outlet of injector.Use this nozzle also can eliminate the necessity that trims cold slag from formed parts substantially.Use with nozzle-integrated heater and can the plastics at the delivery end of nozzle be remained in a kind of state of basic plastification.

People also know, can provide an air gap or heat-insulating material between the main body of nozzle and die cavity or mould, thereby form a heat insulation layer.This insulating barrier can prevent partly that at least heat is from nozzle consume progressive die chamber or mould.

The purpose of this utility model provides a kind of nozzle that can make the inejction molder of favourable selection at least for the public.

According to first aspect of the present utility model, the heated nozzle that a kind of inejction molder is used has:

One longitudinal bodies, this longitudinal bodies has an entrance point, a port of export, the melt duct of vertically passing of melt outlet from the melt inlet of entrance point to the port of export, in use described entrance point enters the mouth with injection molding and engages;

A cap of spraying nozzle has a junction and divides and a mould bonding part; Described mould bonding part has at least one makes material enter the hole of mould, the described coupling part of described cap of spraying nozzle is connected in described longitudinal bodies directly or indirectly, make between described longitudinal bodies melt exit portion and the described cap of spraying nozzle to form adiabatic crack, described cap of spraying nozzle and described longitudinal bodies are only in the coupling part of described cap of spraying nozzle or be connected in its vicinity.

One heating element heater contacts with described longitudinal bodies directly or indirectly.

The heat conductivity that described longitudinal bodies is made material preferably is higher than the heat conductivity that described cap of spraying nozzle is made material.

Described cap of spraying nozzle preferably have a flat substantially surface with bonding part described mould or die cavity.

Substantially the flat surface of described cap of spraying nozzle is preferably formed by a lug area.

Described longitudinal bodies is preferably made by beallon.

Described beryllium copper material is the CuCoBe10 alloy preferably.

One thermocouple preferably is set, so that the output signal of keeping the nozzle steady temperature is provided.

The most handy steel of described cap of spraying nozzle is made.

Described steel is the HRC54 steel preferably.

In broad terms, the utility model is the part that specification is mentioned or described, and no matter element and feature are independent or set is used, and any two or more described parts, any or whole combination of element or feature.The feature of mentioning in this specification, as known equivalent is arranged in the prior art relevant with the utility model, so, these equivalents should be thought to comprise in this manual, as having carried out independent explanation in this manual.

Contrast the following drawings is described preferred embodiment of the present utility model now.

Fig. 1 is the front view that part section is arranged according to the injection moulding nozzle of the utility model first embodiment;

Fig. 2 is the side view of nozzle among Fig. 1;

Fig. 3 is the upward view of nozzle among Fig. 1;

Fig. 4 is the stereogram of nozzle among Fig. 1;

Fig. 5 is the front view that part section is arranged according to the injection moulding nozzle of the utility model second embodiment;

Fig. 6 is the front view of nozzle among Fig. 5;

Fig. 7 is the upward view of nozzle among Fig. 5;

Fig. 8 is the stereogram of nozzle among Fig. 5;

Fig. 9 is the front view that part section is arranged according to the injection moulding nozzle of the utility model the 3rd embodiment;

Figure 10 is the front view of nozzle among Fig. 9;

Figure 11 is the upward view of nozzle among Fig. 9;

Figure 12 is the stereogram of nozzle among Fig. 9.

Have a body 1 according to nozzle of the present utility model, body 13 has one in the end that in use engages with the inlet of inejction molder.The relative other end of body 1 forms an end point 3, and end point 3 contacts with mould or die cavity.

Be provided with a longitudinal bodies 24 in body, longitudinal bodies 24 has an end 10 that in use directly or indirectly engages with the inlet of injector, is in a liquid state substantially or the plastics or the similar material of fusion at first flow into this end 10.

Longitudinal bodies 24 also has a port of export 11.In a preferred embodiment of the present utility model, the port of export 11 has the tapering towards outlet opening.The port of export is provided with and is in a liquid state substantially or the plastics of fusion or the outlet of similar material.

Longitudinal bodies 24 the most handy beryllium coppers or the good material of other similar thermal conductivity are made.CuCoBe10 is an example that is suitable for the beallon of making longitudinal bodies 24.Longitudinal bodies 24 also has a removable insert (draw), for example makes wearing and tearing when bearing material with abrasive material character such as GRP by nozzle by steel.

In an illustrated embodiment of the present utility model, be provided with an end cap or cap of spraying nozzle 9.Cap of spraying nozzle 9 has the inlet part 12 of a mould.In preferred embodiment of the present invention, described inlet part 12 has at least one hole, is in a liquid state substantially or the plastics of fusion or materials similar flow into mould by this hole.Described inlet part preferably has flat substantially plane, towards mould inside is arranged.Cap of spraying nozzle has coupling part 13.In use, according to the utility model, coupling part 13 provides the unique contact between described cap of spraying nozzle and the described longitudinal bodies.

In some embodiment of the present utility model, there is a threaded sections coupling part 13 of cap of spraying nozzle, is screwed into described body, and contacting of described longitudinal bodies and described cap of spraying nozzle is provided on the inner surface of described coupling part 13.

Outside around body preferably is provided with helical heating element 5, element 5 heated nozzles, and guarantee that plastics or similar material remain the state of basic plastification.Owing to only near the coupling part of described nozzle tip or its, contact between cap of spraying nozzle and the longitudinal bodies, so be provided with adiabatic crack between longitudinal bodies and nozzle tip, plastics in adiabatic crack assurance longitudinal bodies and the longitudinal bodies or similar material remain on and are heated substantially or tepid state.Adiabatic air gap forms adiabatic between longitudinal bodies and nozzle tip, because cap of spraying nozzle directly contacts with mould or die cavity, the heat that has limited substantially owing to longitudinal bodies is absorbed the cooling effect that produces by colder mould.Therefore, the melted material that the inlet part 12 of mould is difficult for being cooled stops up, thereby is not prone to slag on finished product.

Between the end of bonding part 13 and cap of spraying nozzle 9, also have a negative area 20(Fig. 1) be adjacent to die inlet part 12.Negative area 20 has formed the adiabatic air gap 22 between nozzle body 1 and cap of spraying nozzle.Air gap 22 helps to prevent that from the zone that is close in cap of spraying nozzle main body 1 towards the heat transmission of cap of spraying nozzle bottom, therefore, more heat is returned longitudinal bodies 24.This also helps to prevent to be close in the cooling of the melted material of die inlet part 12.

In recommendation enforcement of the present utility model is novel, also be provided with a thermocouple 6.In use, a controller receives the signal of thermocouple 6, to heating element heater with electric current is provided, thereby keep the steady temperature of nozzle.Thermocouple, controller and heating element heater can belong to any suitable type in this professional prior art.

Now consult Fig. 5 to 8 and 9 to 12, wherein represent the of the present utility model second and the 3rd embodiment respectively, use the label identical with Fig. 1 to 4 for similar technical characterictic.The shape of second embodiment and structure shown in Fig. 5 to 8 make it be applicable to most of molding materials except that glass reinforced material, and its needle-like tip that has two

exit portion

7 and 8 can form minimum spot on finished product.

By preceding as can be seen described, the nozzle that the utility model (being its preferred embodiment at least) is provided helps to prevent to form slag very much on foundry goods, is closing on the cooling of nozzle tip place owing to prevent melted material, thereby is improving the outward appearance and the quality of foundry goods.

Have found that the utility model can be applicable to existing mold well.The utility model also can be eliminated slag and enter phenomenon in the gate system.

Claims

1, a kind of heated nozzle that is used for inejction molder, it has a longitudinal bodies, longitudinal bodies has an entrance point, one port of export, extend to the melt duct of vertically passing of the melt outlet of the end of being close to the exit from the melt inlet of entrance point, in use described entrance point enters the mouth with an injection molding and engages; A cap of spraying nozzle, cap of spraying nozzle has a coupling part and a mould bonding part, described mould bonding part has at least one makes material enter the hole of described mould, the coupling part of described cap of spraying nozzle can directly or indirectly be connected in described longitudinal bodies, makes and forms an adiabatic crack between the described melt exit portion of described longitudinal bodies and the described cap of spraying nozzle; And one heating element heater contact with described longitudinal bodies directly or indirectly, it is characterized in that: described cap of spraying nozzle and described longitudinal bodies only are connected near the coupling part of described cap of spraying nozzle or its.