CN218399213U

CN218399213U - Mould with many caves hot runner

Info

Publication number: CN218399213U
Application number: CN202222273786.7U
Authority: CN
Inventors: 袁巍林
Original assignee: Guangdong Jingshi Jingmo Technology Co ltd
Current assignee: Guangdong Jingshi Jingmo Technology Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-01-31
Anticipated expiration: 2032-08-29

Abstract

The utility model relates to the field of moulds, and discloses a mould with a multi-cavity hot runner, which comprises a mould core, wherein a hot runner flow distribution plate is arranged above the mould core; a runner is arranged in the hot runner flow distribution plate; the bottom of the hot runner flow distribution plate is provided with a plurality of hot runner branch nozzles communicated with the flow channel; and a plurality of hot runner sub-nozzles are communicated with the interior of the mold core so as to be filled to form a molded plastic part; the lower die core of the die core is formed with a plurality of groups of cavities; each group of cavities consists of four small cavities which are distributed in an array and communicated with each other; each hot runner sub-nozzle is communicated with the center of one group of cavities; the utility model has the advantages that the mould with the multi-cavity hot runner can form thirty-two products by one-time injection molding, and the production efficiency is higher; the specific gravity of the produced water gap is low, the forming period is prolonged, and the product cost and the labor cost are reduced; each hot runner branch nozzle corresponds to four molding plastic parts so that the glue feeding is balanced.

Description

Mould with many caves hot runner

Technical Field

The utility model relates to the technical field of mold, the utility model particularly relates to a mould with many caves hot runner.

Background

Multi-cavity molds, i.e., molds capable of producing multiple plastic products in one injection molding cycle;

the following problems exist in the market at present: the existing multi-cavity die has the defects that the proportion of a cold runner nozzle is large, the subsequent processing of a molded plastic part is not facilitated, the molding period is slow, the waste of raw materials is large, and the production cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who lies in solving is: the multi-cavity hot runner mold capable of reducing the specific gravity of the water gap is provided, the waste of raw materials is avoided, the production cost is reduced, and the molding period is prolonged.

A mould with multi-cavity hot runners comprises a mould core, wherein a hot runner splitter plate is arranged above the mould core; a runner is arranged in the hot runner flow distribution plate; the bottom of the hot runner flow distribution plate is provided with a plurality of hot runner sub-nozzles communicated with the flow channel; and the plurality of hot runner sub-nozzles are communicated with the interior of the mold core so as to be filled to form a molded plastic part.

Preferably, the cross section of the hot runner manifold is in an H shape, a plurality of hot runner sub-nozzles are symmetrically distributed at two ends of the bottom of the hot runner manifold, and the hot runner sub-nozzles are arranged at intervals.

Preferably, the lower die core of the die core is formed with a plurality of groups of cavities; each group of cavities consists of four small cavities which are distributed in an array and communicated with each other; each hot runner sub-nozzle is communicated with the center of one group of cavities.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages that the mould with the multi-cavity hot runner can form thirty-two products by one-time injection molding, and the production efficiency is higher; the specific gravity of the produced water gap is low, the forming period is prolonged, and the product cost and the labor cost are reduced; each hot runner branch nozzle corresponds to four molding plastic parts so that the glue feeding is balanced.

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 view of the overall structure of the present invention.

Fig. 2 is an exploded view of fig. 1 according to the present invention.

Fig. 3 is a schematic diagram of the internal structure of the present invention.

Fig. 4 is a schematic structural diagram of a first heat-generating pipe of the present invention.

Fig. 5 is an enlarged schematic view of fig. 4 a according to the present invention.

Fig. 6 is a schematic view of the position structure of the hot runner nozzle and the molded plastic part of the present invention.

Fig. 7 is a schematic structural view of the lower mold core of the present invention.

In the figure: a mold core 1; a hot runner manifold 2; a hot runner branch nozzle 4; molding a plastic part 5; a lower die core 6; a small cavity 7; an upper die 8; a lower die 9; a shunt protection plate 10; an upper die top plate 11; a flange 12; a hot runner main nozzle 13; a first heat-generating pipe 14; a second heat generating tube 16; an electrical connector 17; a lower die support base 18; an ejector plate 19; a thimble 20; a nozzle charge 21.

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.

Referring to fig. 1 to 7, in the embodiment of the present invention, the mold includes a mold core 1, and a hot runner manifold 2 is disposed above the mold core 1; a runner is arranged in the hot runner flow distribution plate 2; the bottom of the hot runner flow distribution plate 2 is provided with a plurality of hot runner branch nozzles 4 communicated with the flow channel; and a plurality of hot runner branch nozzles 4 are communicated with the interior of the mould core 1 so as to be filled to form a molding plastic part 5.

Furthermore, the cross section of the hot runner manifold 2 is in an H shape, a plurality of hot runner sub-nozzles 4 are symmetrically distributed at two ends of the bottom of the hot runner manifold 2, and the hot runner sub-nozzles 4 are arranged at intervals.

Further, a plurality of groups of cavities are formed in the lower die core 6 of the die core 1; each group of cavities consists of four small cavities 7 which are distributed in an array and communicated with each other; each hot runner sub-nozzle 4 is communicated with the center of one group of cavities; the mold core 1 and the lower mold core 6 can be fixed by bolts.

Further, the device also comprises an upper die 8 and a lower die 9 corresponding to the upper die 8; the mold core 1 is arranged between the upper mold 8 and the lower mold 9; the top of the upper die 8 is provided with a shunt protection plate 10 which covers the hot runner shunt plate 2; the shunt protection plate plays a role in protection and heat preservation; the hot runner manifold 2 and the manifold protection plate 10 can be fixed by bolts.

Further, an upper die top plate 11 is arranged on the shunt protection plate 10; a flange 12 is fixedly arranged at the central position of the upper die top plate 11; the shunting protection plate 10 is provided with a hot runner main nozzle 13 communicated with the flow channel; and the hot runner main nozzle 13 is aligned with the central position of the flange 12; the shunt protection plate 10 and the upper die top plate 11 can be fixed by bolts.

Furthermore, the top and the bottom of the hot runner flow distribution plate 2 are provided with heating pipes; the outer side of the shunt protection plate 10 is provided with an electric connector 17 which is electrically connected with the heating tube; preferably, a temperature sensor can be arranged in the die for real-time temperature detection, and detection data are synchronized to the control end of the injection molding machine, so that the heating size of the heating tube can be adjusted conveniently.

Further, the heating pipes comprise two first heating pipes 14 respectively arranged at the top and the bottom of the left end of the hot runner manifold 2 and two second heating pipes 16 respectively arranged at the top and the bottom of the right end of the hot runner manifold 2; the first heating tube 14 and the second heating tube 16 are electrically connected with an electric connector 17; the heating tube enables the injection molding liquid in the flow passage to keep the required temperature.

Further, a lower die supporting seat 18 connected with the lower die 9 is also included; an ejector plate 19 is arranged on the lower die supporting seat 18; the ejector pin plate 19 is provided with a plurality of ejector pins 20 for ejecting the molded plastic part 5; specifically, each molding plastic part can adopt eight ejector pins, and each water gap adopts two ejector pins, so that the product and the produced water gap can be ejected out stably.

During injection molding production, the flange 12 and an injection molding machine are positioned concentrically, the gun nozzle is aligned with the hot runner main nozzle 13 to inject glue, and the glue flows to the hot runner sub-nozzle 4 through the runner of the hot runner flow distribution plate 2 to fill the cavity to form a molded plastic part 5 (product); after cooling, the ejector plate 19 is driven by external force and drives the ejector pin to eject the molded plastic part 5.

Each group of cavities consists of four small cavities 7 which are distributed in an array and communicated; each hot runner branch nozzle 4 is communicated with the center position of one group of cavities, so that the nozzle material 21 is formed only at the center position communication position, two thirds of the nozzle material is reduced, the raw material waste is avoided, the cost is reduced, and the forming period is prolonged.

As shown in fig. 6, as an example, eight hot runner sub-nozzles 4 are adopted, each hot runner sub-nozzle 4 corresponds to four molded plastic parts (products), a total of thirty-two small cavities 7 are formed, thirty-two products can be molded by one-time injection molding, and the production efficiency is high; and each hot runner sub-nozzle 4 corresponds to four molding plastic parts, so that the glue feeding is balanced; the last produced nozzle produces one nozzle for every four products, and the specific gravity of the nozzle is reduced.

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. A mould with multi-cavity hot runners comprises a mould core and is characterized in that a hot runner flow distribution plate is arranged above the mould core; a runner is arranged in the hot runner flow distribution plate; the bottom of the hot runner flow distribution plate is provided with a plurality of hot runner sub-nozzles communicated with the flow channel; and the plurality of hot runner sub nozzles are communicated with the interior of the mold core so as to be filled to form a molded plastic part.

2. The mold of claim 1, wherein the hot runner manifold has an "H" shape in cross section, and the hot runner nozzles are symmetrically distributed at two ends of the bottom of the hot runner manifold and are spaced apart from each other.

3. The mold of claim 2, wherein the lower mold core of the mold core is formed with a plurality of sets of cavities; each group of cavities consists of four small cavities which are distributed in an array and communicated with each other; each hot runner sub-nozzle is communicated with the center of one group of cavities.

4. The mold with the multi-cavity hot runner of claim 1, further comprising an upper mold, a lower mold corresponding to the upper mold; the mold core is arranged between the upper mold and the lower mold; the top of the upper die is provided with a shunt protection plate which covers the hot runner shunt plate.

5. The mold with the multi-cavity hot runner as claimed in claim 4, wherein the split stream protection plate is provided with an upper mold top plate; a flange is fixedly arranged at the central position of the upper die top plate; the shunting protection plate is provided with a hot runner main nozzle communicated with the flow channel; and the hot runner main nozzle is aligned with the central position of the flange.

6. The mold with multi-cavity hot runner according to claim 4, wherein the top and bottom of the hot runner manifold are provided with heating tubes; the outer side of the shunt protection plate is provided with an electric connector which is electrically connected with the heating tube.

7. The mold with the multi-cavity hot runner of claim 6, wherein the heating pipes comprise two first heating pipes respectively arranged at the top and the bottom of the left end of the hot runner manifold, and two second heating pipes respectively arranged at the top and the bottom of the right end of the hot runner manifold; the first heating tube and the second heating tube are electrically connected with the electric connector.

8. The mold with the multi-cavity hot runner of claim 1, further comprising a lower mold support coupled to the lower mold; an ejector plate is arranged on the lower die supporting seat; the ejector pin plate is provided with a plurality of ejector pins for ejecting the molded plastic part.