CN217169484U

CN217169484U - Hot runner glue outlet nozzle core

Info

Publication number: CN217169484U
Application number: CN202220839487.2U
Authority: CN
Inventors: 吴小锋
Original assignee: Dongguan Depu Hot Runner Technology Co ltd
Current assignee: Dongguan Depu Hot Runner Technology Co ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-08-12
Anticipated expiration: 2032-04-12

Abstract

The utility model discloses a hot runner goes out to glue mouth core, including cylindrical mouth core body, be equipped with the gathering of taper at mouth core body end and glue the point the metal covering has been cup jointed outward on mouth core body top, inwards seted up along the terminal surface on the metal covering and advanced gluey way, advance gluey way end at the at least subchannel of mouth core body from inside to outside extension, the subchannel forms out the jiao kou at mouth core body outer wall, is equipped with the cage and glues the cover in a jiao kou both sides, the cage is glued the cover and will be followed the glue solution constraint that the jiao kou flows out on the outer wall of mouth core body, makes the glue solution can flow to gathering along the outer wall at mouth core body and glues the point. This scheme utilization sets up the cage and glues the cover on the play jiao kou of mouth core body, can effectually prevent to directly instil into the die cavity from the plastic that goes out jiao kou outflow and form "people" font vestige, need not to go out to glue the mouth setting moreover and gathering near some, can not influence the rigidity of gathering jiao kou to the life-span of product has been guaranteed.

Description

Hot runner glue outlet nozzle core

Technical Field

The utility model relates to a hot runner field particularly relates to a hot runner goes out to glue mouth core.

Background

When the plastic product is injected, molten plastic is injected into the nozzle core through a hot runner of an injection molding machine, and finally, liquid plastic is injected into a cavity of an injection mold from the nozzle core to obtain the plastic product.

The existing common nozzle core structure is shown in fig. 1 and fig. 2, and is a hollow cylindrical core body 1a, a pipeline 2a for plastic flowing is arranged in the core body 1a, a tapered tip part is arranged at the bottom end of the core body 1a for positioning a dispensing position 3a, a glue opening 4a which is the same as the pipeline 2a is arranged at a position close to the tapered tip part, when the nozzle core works, plastic flows out from the glue opening 4a through the pipeline 2a in the core body 1a, and then the plastic is converged at the tapered tip part along the outer wall of the core body 1a, so that dispensing and injection molding can be accurately carried out according to a specified position.

However, as shown in fig. 3, in the above structure, if the flow rate of the plastic in the pipe 2a of the core 1a is too high, part of the plastic will not converge at the tapered tip along the outer wall of the core 1a but directly drop to the periphery of the specified position when flowing from the glue port 4a, so that a herringbone mark will be formed in the cavity, and the glue mark will appear at the position where the glue is not dispensed, which affects the precision of injection molding. In order to overcome the above-mentioned situation, the glue outlet 4a can only be made as close as possible to the glue dispensing position 3a, but too close to the glue dispensing position 3a will affect the rigidity of the tapered tip portion and the service life of the product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hot runner goes out to glue mouth core overcomes above-mentioned prior art's defect, does not influence under the prerequisite of looking into product life-span, has solved because the plastic velocity of flow is too fast, and can form the problem of the vestige of "people" font in the die cavity.

In order to achieve the purpose, the hot runner glue outlet nozzle core comprises a cylindrical nozzle core body, wherein a conical glue gathering point is arranged at the tail end of the nozzle core body, a metal sleeve is sleeved outside the top end of the nozzle core body, a glue inlet channel is inwards formed in the end face of the metal sleeve, at least one sub-channel extends from inside to outside from the tail end of the glue inlet channel to the outer wall of the nozzle core body, glue outlets are formed in the outer wall of the nozzle core body by the sub-channels, and a cage glue cover is arranged on two sides of each glue outlet and used for binding glue flowing out from the glue outlets to the outer wall of the nozzle core body, so that the glue can flow to the glue gathering point along the outer wall of the nozzle core body.

Further, the cage rubber cover comprises a cover body, the cover body is annularly covered outside the nozzle core body, a V-shaped fixing part extends and is fixed on the inner side of the cover body towards the outer wall of the nozzle core body, the top of the cover body is fixed at the bottom end of the metal sleeve, and parts of the top of the cover body are shielded on two sides of the rubber outlet, and a cage rubber area is formed between the cover body and the nozzle core body by the fixing part.

Further, arc-shaped depressions are formed inwards on two sides of the fixing part.

Further, the cover body extends downwards from the top along the outer wall of the mouth core body and is gradually narrowed.

Furthermore, the glue inlet channel is in a frustum shape with a large upper part and a small lower part.

Furthermore, the sub-runners are in a horn shape with a small upper part and a large lower part.

Furthermore, the quantity of subchannel is 3, go out to glue the mouth and distribute along mouth core body outer wall interval 120 degrees, cage is glued the cover interval and is set up between going out to glue the mouth.

Furthermore, the vertical distance between the glue outlet and the glue gathering point is 5-8 cm.

Compared with the prior art, the beneficial effects of the utility model are that:

compared with the prior art, this scheme utilization sets up the cage on the play jiao kou of mouth core body and glues the cover, can effectually prevent to directly instil into the die cavity from the plastic that the play jiao kou flows and form "people" font vestige, need not to go out to glue the mouth setting moreover and gathering near gluey point, can not influence the rigidity of gathering jiao kou to the life-span of product has been guaranteed.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that 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 according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of the prior art of the hot runner glue outlet nozzle core of the present invention;

FIG. 2 is a structural cross-sectional view of the prior art hot runner nozzle core of the present invention;

FIG. 3 is a cross-sectional view of another prior art hot runner nozzle core of the present invention in an operational configuration;

FIG. 4 is a schematic view of the overall structure of the hot runner glue outlet core of the present invention;

fig. 5 is a schematic view of another angle of the hot runner glue outlet nozzle core according to the present invention;

FIG. 6 is a cross-sectional view of the overall structure of the hot runner glue outlet core of the present invention;

the reference numerals and names in the figures are as follows:

core body 1a, pipeline 2a, glue dispensing position 3a, glue outlet 4a, nozzle core body 1, glue gathering point 2, metal sleeve 3, glue inlet channel 31, sub-channel 11, glue outlet 12, cage glue cover 4, cover body 41, fixing part 42 and cage glue area 43

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but 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.

Fig. 4-6 show the structure of an embodiment of the hot runner glue outlet nozzle core of the present invention, which includes a cylindrical nozzle core body 1, a conical glue gathering point 2 is disposed at the end of the nozzle core body 1, the glue gathering point 2 is used for accurately positioning a position where glue dispensing and injection molding are required, a metal sleeve 3 for connecting a hot runner is sleeved outside the top end of the nozzle core body 1, a glue inlet channel 31 is disposed inwards along the end surface of the metal sleeve 3, preferably, the glue inlet channel 31 is in a frustum shape with a large top and a small bottom, molten plastic flows into the glue inlet channel 31 from the hot runner, at least one branch channel 11 extends from the end of the glue inlet channel 31 to the periphery of the nozzle core body 1 from the inside to the outside, preferably, the branch channel 11 is in a horn shape with a small top and a small bottom, so that the glue inlet channel 31 is communicated with the branch channel 11, and the branch channel 11 forms a glue outlet 12 on the outer wall of the nozzle core body 1, thus, the plastic flowing into the glue inlet channel 31 flows out from the glue outlet 12 through the sub-channel 11, the cage glue covers 4 are arranged on two sides of the glue outlet 12, each cage glue cover 4 comprises a cover body 41, each cover body 41 has a certain area and is annularly covered on the outer portion of the nozzle core body 1, a V-shaped fixing portion 42 is fixedly extended towards the outer wall of the nozzle core body 1 on the inner side of the cover body 41 opposite to the nozzle core body 1, so that the cover body 41 is fixed on the outer wall of the nozzle core body 1, the top of the cover body 41 is fixed at the bottom end of the metal sleeve 3, and partial shielding for the glue outlet 12 is formed on two sides above the glue outlet 12, so that a cage glue area 43 with a certain space is formed by the cover body 41, the fixing portion 42 and the outer wall of the nozzle core body 1, and when the flow rate of the plastic is relatively slow in a normal state, the plastic flows towards the glue gathering point 2 along the outer wall of the nozzle core body 1 after flowing out from the glue outlet 12, then gather and drip into the die cavity of treating moulding plastics again behind gluey point 2 gathering, if the velocity of flow of plastic accelerates, at this moment can be in a gluey mouth 12 gathering of play and lead to the overflow, the cage is glued district 43 and can be restricted the plastic and at the excessive degree of a gluey mouth 12, keeps gathering together the plastic on the outer wall of mouth core body 1 to the guarantee plastic can gather gluey point 2 along the outer wall flow direction of mouth core body 1, avoids directly forming "people" font vestige in the die cavity from the plastic that a mouthful 12 flows out of gluing, has improved the precision of moulding plastics, and the play mouth 12 of this scheme need not be seted up and gather near gluey point 2, still can not influence the rigidity that gathers gluey point 2, thereby has guaranteed the life-span of product.

Further to the above embodiment, the two sides of the fixing portion 42 are inwardly formed with arc-shaped recesses. Therefore, the space of the plastic cage area 43 can be further increased, when the flow rate of the plastic is too high, the plastic can be gathered at the plastic outlet 12 in a large amount, and the space of the plastic cage area 43 can be increased to better limit the overflow of the plastic at the plastic outlet 12.

Still further, the cover 41 extends downwards from the top along the outer wall of the nozzle core body 1 and gradually narrows, so that the cage rubber area 43 forms a shape with a narrow top and a wide bottom outside the nozzle core body 1, which is convenient for the plastic to form a sufficient expansion space when flowing along the outer wall of the nozzle core body 1, and further prevents the plastic from gathering on the outer wall of the nozzle core body 1 to cause overflow.

Furthermore, the number of the sub-runners 11 is 3, the glue outlets 12 are distributed along the outer wall of the nozzle core body 1 at intervals of 120 degrees, so that the effect of shunting the plastic of the glue inlet runner 31 is good, the process is saved, the vertical distance between the glue outlet 12 and the glue gathering point 2 is 5-8 cm, the plastic flowing out of the glue outlet 12 has a sufficient stroke to flow on the outer wall of the nozzle core body 1 under the size, a sufficient space for the glue cage area 43 is provided to prevent the plastic from overflowing, and the glue cage covers 4 are arranged between the glue outlets 12 at intervals.

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.

Claims

1. Hot runner goes out jiao zui, its characterized in that, including cylindrical mouth core body (1), be equipped with the gluey point (2) of gathering of taper at mouth core body (1) end the metal sheath (3) has been cup jointed outward on mouth core body (1) top, inwards seted up along the terminal surface and advanced gluey way (31) on metal sheath (3), it extends at least one subchannel (11) from inside to outside at mouth core body (1) to advance gluey way (31) end, subchannel (11) form the jiao kou in mouth core body (1) outer wall, are equipped with cage gum cover (4) in a jiao kou both sides, cage gum cover (4) will be from the gluey liquid constraint of play jiao kou outflow on the outer wall of mouth core body (1), make the glue solution can flow to gathering gluey point (2) along the outer wall at mouth core body (1).

2. The hot runner glue outlet nozzle core according to claim 1, wherein the rubber cage cover (4) comprises a cover body (41), the cover body (41) covers the outside of the nozzle core body (1) in a ring manner, a V-shaped fixing part (42) extends and is fixed on the inner side of the cover body (41) towards the outer wall of the nozzle core body (1), the top of the cover body (41) is fixed at the bottom end of the metal sleeve (3) and forms a partial shield on two sides above the glue outlet, and the fixing part (42) forms a rubber cage area (43) between the cover body (41) and the nozzle core body (1).

3. The hot runner nozzle core according to claim 2 wherein both sides of the retainer portion (42) are inwardly concave in an arcuate shape.

4. Hot runner glue outlet nozzle core according to claim 3, characterised in that the cover (41) extends from the top downwards along the outer wall of the nozzle core body (1) and narrows.

5. The hot runner nozzle core according to claim 4, wherein the glue inlet channel (31) is frustum-shaped with a large top and a small bottom.

6. Hot runner nozzle core according to claim 5, characterized in that the sub-channels (11) are trumpet-shaped with a small top and a large bottom.

7. The hot runner glue outlet nozzle core according to any one of claims 1 to 6, wherein the number of the branch runners (11) is 3, the glue outlets are distributed at intervals of 120 degrees along the outer wall of the nozzle core body (1), and the cage glue covers (4) are arranged at intervals between the glue outlets.

8. Hot runner nozzle core according to claim 7, characterized in that the vertical distance of the glue outlet from the glue spot (2) is between 5 and 8 cm.