CN211591086U

CN211591086U - Hot runner injection mold nozzle

Info

Publication number: CN211591086U
Application number: CN201921838240.3U
Authority: CN
Inventors: 甘涛; 李青春
Original assignee: Chengdu Wanshunda Mould & Parts Co ltd
Current assignee: Chengdu Wanshunda Mould & Parts Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-09-29
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a hot runner injection mould nozzle belongs to the hot runner field of moulding plastics, a hot runner injection mould nozzle, including the nozzle neck, the runner of setting at nozzle neck central point position, install the nozzle tip of putting at the nozzle head of nozzle neck one end and nozzle tip central point, annular heater has been installed to the outer wall lower part of nozzle neck, the outer wall of nozzle neck, the heat-conducting layer has been installed to non-annular heater's position, the outer wall of heat-conducting layer is equipped with the roll-in groove, the inner wall ring shape of heat-conducting layer all is equipped with heat conduction protrudingly, the outer wall of nozzle neck, it all is equipped with the groove of watering to correspond the. Through the heat conduction silk of connecting the annular heater heat-conducting portion, the spiral conduction of heat that produces the annular heater to being drawn into the inslot wall, owing to be drawn into the outer wall that the groove encircles whole heat-conducting layer, and through the heat conduction that the annular evenly set up protruding, the heat conduction distance to the runner inner wall that significantly reduces is better to runner inner wall heat conduction effect.

Description

Hot runner injection mold nozzle

Technical Field

The utility model relates to a hot runner injection mould nozzle.

Background

The hot runner ensures that the plastic of the runner and the sprue keeps a molten state by a heating method, and because the heating rod and the heating ring are arranged near or in the center of the runner, the whole runner from the nozzle outlet of the injection molding machine to the sprue is in a high-temperature state, so that the plastic in the runner keeps molten, the runner does not need to be opened to take out the condensate after the machine is stopped, and the runner only needs to be heated to the required temperature when the machine is restarted.

The existing hot runner injection mold nozzle mainly comprises a neck and a head, wherein a flow channel is arranged at the central position of the neck, a nozzle is arranged at the central position of the head, the flow channel is communicated with the nozzle, a ring heater is sleeved at the lower part of the outer wall of the neck in an interference manner, a copper layer is rolled at other positions of the outer wall of the neck, a spiral winding groove is formed in the outer wall of the copper layer through lathe turning and used for connecting and winding a heat conducting wire led out by the ring heater, a power wire of the ring heater is connected with a wiring lower pile at the power output end of an injection molding machine, when the ring heater is electrified, heat emitted by the ring heater is spirally conducted onto the copper layer, finally the heat is conducted to the neck of the nozzle through the copper layer and finally conducted to the inner wall of the flow channel, so that plastic melt flowing through the inner wall of the flow channel, therefore, the heat conduction effect to the inner wall of the flow passage is not good enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hot runner injection mould nozzle to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, an embodiment of the present invention provides a hot runner injection mold nozzle, including nozzle neck, the runner of setting at nozzle neck central point and installing at the nozzle head of nozzle neck one end and the nozzle mouth that nozzle head central point put, ring heater has been installed to the outer wall lower part of nozzle neck, the heat-conducting layer has been installed to the outer wall of nozzle neck, non-ring heater's position, the outer wall of heat-conducting layer is equipped with the roll-up groove, the inner wall ring shape of heat-conducting layer all is equipped with heat conduction protrudingly, the outer wall of nozzle neck, correspond the protruding position of each heat conduction and all be equipped with and water the groove, the protruding dress of heat conduction is established in watering the groove.

Further, the heat conducting layer is of a round sleeve structure.

Furthermore, the rolling groove is of a groove structure spirally arranged on the outer wall of the heat conduction layer.

Further, the heat conduction protrusion is of a round rod structure, and the pouring groove is of a round groove structure.

Further, the maximum distance between the bottom end of the inner part of the pouring groove and the inner wall of the flow channel is not more than one millimeter.

To sum up, the utility model has the advantages of it is following: when the ring heater moves, through the heat conduction silk of connecting the ring heater heat-conducting portion, the spiral conduction of heat that produces the ring heater to being drawn into the inslot wall, owing to be drawn into the groove and encircle the outer wall of whole heat-conducting layer, can be fast by whole heat-conducting layer absorbed heat, and through the heat conduction that the annular evenly set up protruding, the heat conduction distance to the runner inner wall that significantly reduces, to runner inner wall heat conduction effect better.

Drawings

Fig. 1 is a schematic front view of an embodiment of the present invention;

fig. 2 is a schematic view partially cut away from the front view in one embodiment of the present invention;

fig. 3 is a schematic top view of a lateral cross-section of a medial side of an embodiment of the present invention.

Wherein, 1 nozzle neck, 2 flow channels, 3 nozzle heads, 4 nozzles, 5 annular heaters, 6 heat conduction layers, 7 coiling grooves, 8 heat conduction protrusions and 9 pouring grooves.

Detailed Description

Referring to fig. 1, 2 and 3, a hot runner injection mold nozzle includes a nozzle neck 1, a flow channel 2 disposed at the center of the nozzle neck 1, a nozzle head 3 disposed at one end of the nozzle neck 1, and a nozzle mouth 4 disposed at the center of the nozzle head 3, wherein the upper end of the nozzle neck 1 is connected to the lower end of the nozzle head 3, the nozzle neck 1 and the nozzle head 3 are a fusion-cast integral unit, the flow channel 2 is communicated with the nozzle mouth 4, a ring heater 5 is disposed at the lower part of the outer wall of the nozzle neck 1, the ring heater 5 is of type LX-TCJRQ, the inner wall of the ring heater 5 is in interference fit with the outer wall of the lower part of the nozzle neck 1, a heat conduction layer 6 is disposed at the outer wall of the nozzle neck 1 and the non-ring heater 5, the heat conduction layer 6 is disposed at the outer wall of the nozzle neck 1 located above the ring heater 5, the inner wall of the heat conduction layer 6 is attached to the outer wall of the nozzle neck portion 1 in a raking mode, a rolling groove 7 is formed in the outer wall of the heat conduction layer 6, the rolling groove 7 is formed by turning the outer wall of the heat conduction layer 6 through a turning tool, the rolling groove 7 is of a groove structure which is spirally arranged on the outer wall of the heat conduction layer 6, and heat conduction wires connected with the heat conduction portion of the annular heater 5 are tightly rolled in the rolling groove 7.

Referring to fig. 2 and 3, the inner wall of the heat conduction layer 6 is annularly provided with heat conduction protrusions 8, the outer wall of the nozzle neck 1 and the positions corresponding to the heat conduction protrusions 8 are respectively provided with a pouring groove 9, the pouring groove 9 is annularly and uniformly arranged on the outer wall of the nozzle neck 1, copper is poured into each pouring groove 9 through copper plating on the outer wall of the nozzle neck 1 to form the heat conduction protrusions 8, the outer wall of the nozzle neck 1 forms the heat conduction layer 6, the heat conduction protrusions 8 are of a round rod structure, the pouring groove 9 is of a circular groove structure, the heat conduction protrusions 8 are arranged in the pouring groove 9, the maximum distance between the inner bottom end of the pouring groove 9 and the inner wall of the flow channel 2 is not more than one millimeter, in the utility model, the distance between the inner bottom end of the pouring groove 9 and the inner wall of the flow channel 2 can be designed to be 0.7 millimeter, when the annular heater 5 operates, the heat generated by the annular heater 5 is conducted to the spiral inner wall of the heat conduction, because the roll-in groove 7 encircles the outer wall of the whole heat conduction layer 6, the heat can be quickly absorbed by the whole heat conduction layer 6, and the heat conduction distance to the inner wall of the flow channel 2 is greatly reduced through the heat conduction protrusions 8 which are uniformly arranged in an annular shape.

When the ring heater 5 moves, through the heat conduction silk of connecting the 5 heat conduction parts of ring heater, the spiral conduction of heat that produces ring heater 5 to being drawn into groove 7 inner wall, because roll up groove 7 and encircle the outer wall of whole heat-conducting layer 6, can be fast by the heat absorption of whole heat-conducting layer 6, and through the protruding 8 of heat conduction that the annular evenly set up, the greatly reduced is to 2 inner wall heat conduction distances of runner, and is better to 2 inner wall heat conduction effects of runner.

While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be considered as limited to the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.

Claims

1. The utility model provides a hot runner injection mould nozzle, includes nozzle neck (1), sets up runner (2) of putting at nozzle neck (1) central point, installs nozzle head (3) and nozzle head (3) central point (4) of putting at nozzle neck (1) one end, its characterized in that: annular heater (5) have been installed to the outer wall lower part of nozzle neck (1), heat-conducting layer (6) have been installed to the outer wall of nozzle neck (1), the position of non-annular heater (5), the outer wall of heat-conducting layer (6) is equipped with roll-on groove (7), the inner wall ring shape of heat-conducting layer (6) all is equipped with heat conduction protruding (8), the outer wall of nozzle neck (1), the position that corresponds each heat conduction protruding (8) all are equipped with and irrigate groove (9), heat conduction protruding (8) are installed and are watered in groove (9).

2. The hot runner injection mold nozzle of claim 1, wherein: the heat conducting layer (6) is of a round sleeve structure.

3. The hot runner injection mold nozzle of claim 1, wherein: the winding groove (7) is of a groove structure spirally arranged on the outer wall of the heat conduction layer (6).

4. The hot runner injection mold nozzle of claim 1, wherein: the heat conduction convex (8) is of a round rod structure, and the pouring groove (9) is of a round groove structure.

5. The hot runner injection mold nozzle of claim 4, wherein: the maximum distance between the bottom end of the inner part of the pouring groove (9) and the inner wall of the flow channel (2) is not more than one millimeter.