CN116001207A - A kind of oblique hot nozzle hot runner system and injection mold - Google Patents

Abstract

The invention relates to the technical field of forming dies, and particularly discloses an inclined hot nozzle hot runner system and an injection die, wherein the inclined hot nozzle hot runner system comprises a runner plate, a main runner nozzle and a first hot nozzle which is obliquely arranged are arranged on the runner plate, the main runner nozzle is used for being connected with an injection machine, and the first hot nozzle is used for being connected with a die cavity of the die; the inside of runner board is including sprue and first subchannel, the sprue mouth the sprue, first subchannel and first hot mouth communicates in proper order, so that molten state plastics follow the injection molding machine pours into to the mould die cavity cools down the shaping. The invention simplifies the structure of the hot runner system, so that the thickness of the mould blank is prevented from increasing, and the cost of the hot runner system is increased.

Description

A kind of oblique hot nozzle hot runner system and injection mold

technical field

The invention relates to the technical field of forming molds, in particular to a hot runner system with inclined hot nozzles and an injection mold.

Background technique

Injection mold is a tool for producing plastic products. Its working principle is to inject molten plastic into the cavity of the mold under high pressure from the injection molding machine, and obtain molded products after cooling and solidification. Among them, the hot runner system is a commonly used runner system in the mold industry, which ensures that the plastic entering the mold cavity can be maintained in a molten state, and realizes saving raw materials, balancing glue flow, and shortening the gate leveling cycle. In the related art, for the way of feeding glue on a large inclined surface, it is usually necessary to use multiple runner plates in combination with obliquely arranged hot nozzles, resulting in an increase in the thickness of the mold base and an increase in the cost of the hot runner system.

Contents of the invention

The main purpose of the present invention is to propose a hot runner system with inclined hot nozzle and an injection mold, aiming at simplifying the structure of the hot runner system so as to avoid the increase of the thickness of the mold base and the increase of the cost of the hot runner system.

In order to achieve the above purpose, the present invention proposes a hot runner system with oblique hot nozzles, including a runner plate, on which a main flow nozzle and a first hot nozzle arranged obliquely are arranged on the runner plate, and the main flow nozzle is used to connect Injection molding machine, the first hot nozzle is used to connect the mold cavity; the inside of the runner plate includes a main channel and a first runner, the main runner nozzle, the main runner, and the first runner And the first hot nozzle is connected in sequence, so that the plastic in molten state is injected from the injection molding machine into the cavity of the mold for cooling and molding.

Optionally, the surface of the runner plate away from the mold cavity is provided with a first slope, and the first slope is perpendicular to the direction in which the first hot nozzle is arranged.

Optionally, the runner plate is provided with a vertically arranged second hot nozzle, and the second hot nozzle is used to connect the mold cavity; the inside of the runner plate includes a second runner, so Both ends of the second branch channel communicate with the main channel and the second hot nozzle respectively.

Optionally, both the first hot nozzle and the second hot nozzle are configured as valve-needle hot nozzles.

Optionally, the first hot nozzle and the second hot nozzle are combined to form a hot nozzle assembly, the flow channel plate includes several hot nozzle assemblies, and several of the hot nozzle assemblies use the main flow nozzle It is distributed in a circular equidistant array around the axis.

Optionally, a runner adapter block is provided at the intersection of the main channel, the first runner and the second runner, and the runner adapter is used to guide molten plastic from the main channel. The channel flows into the first sub-channel or the second sub-channel.

Optionally, the side of the flow channel adapter block is provided with a first concave hole and a plurality of second concave holes, and the first concave hole and the plurality of second concave holes are arranged on the side of the flow channel adapter block. The inside is connected; wherein the first concave hole is connected with the main flow channel, and the second concave hole is connected with the first sub-flow channel or the second sub-flow channel.

Optionally, a first fixing portion is provided at the top edge of the flow channel adapter block, and a second fixing portion is provided on the side of the installation hole of the flow channel plate for placing the flow channel adapter block, so The combination of the first fixing part and the second fixing part is used to connect a fixing part, and the fixing part is used to fix the flow channel adapter block and the flow channel plate to each other.

Optionally, an ejection hole is provided at the bottom of the installation hole, and the ejection hole runs through the flow channel plate; the ejection hole is used for the ejection rod to pass through, and the ejection rod is used for Push out the flow channel adapter block from the installation hole.

In order to achieve the above object, the present invention also proposes an injection mold, including the above-mentioned oblique hot nozzle hot runner system.

Compared with prior art, the beneficial effect of the present invention:

In the present invention, the main flow nozzle and the obliquely arranged first hot nozzle are all arranged on a single flow channel plate, so that the main flow nozzle, the first hot nozzle and the flow channel plate form a whole, and at the same time, a There is a main channel and a first branch channel, through which the main channel mouth, the main channel, the first branch channel and the first hot nozzle are sequentially connected to allow the molten plastic to be injected from the injection molding machine into the mold cavity for cooling and molding. Different from the need to set multiple runner plates in the related art, the present invention can simplify the structure of the hot runner system by adopting an integral design, so as to avoid the increase of the thickness of the mold base and the increase of the cost of the hot runner system.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural view of an embodiment of the oblique hot nozzle hot runner system of the present invention;

Fig. 2 is a schematic diagram of the structure of the runner adapter block in an embodiment of the oblique hot nozzle hot runner system of the present invention;

Fig. 3 is a schematic diagram of the internal structure of an embodiment of the inclined nozzle hot runner system of the present invention.

The names of the components marked in the figure are as follows:

label name label name 1 Runner plate 101 main channel 102 first runner 104 first slope 105 Mounting holes 106 second fixed part 107 Ejection hole 2 mainstream mouth 3 No. 1 hot mouth 4 mold cavity 5 second hot mouth 6 Hot nozzle assembly 7 Runner adapter block 701 first concave hole 702 second concave hole 703 first fixed part 8 Fastener the

Detailed ways

The technical solution in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, what is described is only a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

This embodiment discloses a hot runner system with oblique hot nozzles. Referring to the accompanying drawings 1-3, it includes a runner plate 1. The runner plate 1 is provided with a main flow nozzle 2 and a first hot nozzle 3 arranged obliquely. The nozzle 2 is used to connect the injection molding machine (not shown in the accompanying drawings), and the first hot nozzle 3 is used to connect the mold cavity 4; , the main flow channel 101 , the first branch channel 102 and the first hot nozzle 3 are connected in sequence, so that the molten plastic is injected from the injection molding machine into the cavity 4 of the mold for cooling and molding.

In this embodiment, the main flow nozzle 2 and the inclined first hot nozzle 3 are arranged on the single flow channel plate 1, so that the main flow nozzle 2, the first hot nozzle 3 and the flow channel plate 1 form a whole, and at the same time A main channel 101 and a first branch channel 102 are provided inside the runner plate 1, through which the main channel nozzle 2, the main channel 101, the first branch channel 102 and the first hot nozzle 3 are sequentially communicated for the injection of molten plastic machine injection into the mold cavity 4 for cooling and molding. Different from the need to set multiple runner plates 1 in the related art, this embodiment can simplify the structure of the hot runner system by adopting an integral design, so as to avoid the increase of the thickness of the mold base and the increase of the cost of the hot runner system.

As a preferred solution of the above embodiment, the surface of the runner plate 1 away from the mold cavity 4 is provided with a first slope 104 , and the first slope 104 is perpendicular to the direction in which the first hot nozzle 3 is arranged. In such a setting, considering that during the manufacturing process of the flow channel plate 1, it is necessary to use a drilling tool to process the assembly hole for installing the first hot nozzle 3 on it, because the drilling tool is more convenient for the plane processing perpendicular to it, so A first slope 104 is provided on the surface of the flow channel plate 1 , and the first slope 104 is perpendicular to the installation direction of the first hot nozzle 3 , so that the drilling tool can process assembly holes on the flow channel plate 1 .

As a preferred solution of the above-mentioned embodiment, the runner plate 1 is provided with a vertically arranged second hot nozzle 5, and the second hot nozzle 5 is used to connect the mold cavity 4; the inside of the runner plate 1 includes a second runner ( The drawings are not shown), and the two ends of the second branch channel communicate with the main channel 101 and the second hot nozzle 5 respectively. In this way, injection molding is performed by combining the vertically arranged second hot nozzle 5 with the obliquely arranged first hot nozzle 3 to cope with plastic products of different shapes. In this embodiment, there is one first hot nozzle 3 and two second hot nozzles 5 .

Further, both the first hot nozzle 3 and the second hot nozzle 5 are valve needle type hot nozzles. Such setting mainly utilizes the advantages of good color change performance of the valve needle nozzle, suitable for most plastics, good flow performance, and very fine gate marks. Compared with the commonly used hot runner system, the valve needle type hot nozzle has an additional set of valve needle transmission device to control the opening and closing movement of the valve needle. The transmission device is equivalent to a hydraulic oil cylinder, which is connected with the mold by the hydraulic device of the injection molding machine to form a hydraulic circuit to realize the opening and closing movement of the valve needle and control the injection of molten plastic into the mold cavity 4 . Under the action of the valve needle type hot nozzle, it is ensured that the plastic in the molten state is smoothly injected into the mold cavity 4 and the gate is perfectly sealed.

Further, the first hot nozzle 3 and the second hot nozzle 5 are combined to form a hot nozzle assembly 6, the flow channel plate 1 includes several hot nozzle assemblies 6, and the several hot nozzle assemblies 6 are equidistant from the main channel nozzle 2 as the axis ring Array distribution. With such arrangement, a plurality of hot nozzle assemblies 6 can be used to realize the production of multiple plastic products by single injection molding, thereby improving the production efficiency. At the same time, a plurality of hot nozzle assemblies 6 are distributed in a circular equidistant array with the main flow nozzle 2 as the axis, so as to ensure that the injection amount of molten plastic in each mold cavity 4 is basically the same, and improve the molding success rate of plastic products. In this embodiment, the hot nozzle assemblies 6 are arranged in two groups.

As a preferred solution of the above-mentioned embodiment, the junction of the main channel 101, the first runner 102 and the second runner 102 is provided with a runner adapter block 7, and the runner adapter block 7 is used to guide molten plastic from the main channel 101 Flow to the first flow channel 102 or the second flow channel. In this way, when considering the processing of the main flow channel 101, the first branch channel 102 and the second flow channel, it is generally necessary to use a drilling tool to drill holes at their corresponding positions on the side of the flow channel plate 1 until they intersect at a certain point. Connect with each other, and then fill the opening of the hole for plugging. This will cause a part of the space (i.e. the dead angle position) in the drilling hole not to be injected with molten plastic. A runner adapter block 7 is provided at the junction of the runners, and the molten plastic is guided from the main runner 101 to the first runner 102 or the second runner through the runner adapter block 7 to prevent it from flowing into a dead angle.

Further, the side of the flow channel adapter block 7 is provided with a first concave hole 701 and a plurality of second concave holes 702, and the first concave hole 701 and the plurality of second concave holes 702 are connected inside the flow channel adapter block 7 Through; wherein the first concave hole 701 communicates with the main channel 101, and the second concave hole 702 communicates with the first branch channel 102 or the second channel. In this way, the first concave hole 701 and the second concave hole 702 are used as guide channels to smoothly guide the molten plastic to flow from the main channel 101 to the first runner 102 or the second runner.

Further, the top edge of the flow channel adapter block 7 is provided with a first fixing part 703, and the side of the installation hole 105 of the flow channel plate 1 for placing the flow channel adapter block 7 is provided with a second fixing part 106. The combination of the fixing part 703 and the second fixing part 106 is used for connecting the fixing part 8, and the fixing part 8 is used for fixing the flow channel adapter block 7 and the flow channel plate 1 to each other. In such a setting, the first fixing part 703, the second fixing part 106 and the fixing part 8 cooperate with each other to realize the fixed connection between the flow channel adapter block 7 and the flow channel plate 1, ensuring that the flow channel is transferred during the injection molding process. Block 7 will not take place relative to runner plate 1 .

Specifically, both the above-mentioned first fixing part 703 and the second fixing part 106 can be selected as arc-shaped concave threaded parts, and a complete threaded hole is formed by combining the first fixing part 703 and the second fixing part 106; The piece 8 can be selected as a bolt, so that the bolt is screwed into the threaded hole to realize the mutual fixing between the flow channel adapter block 7 and the flow channel plate 1 . It should be noted that those skilled in the art, after understanding the above-mentioned technical solutions, can also think of other optional settings of the first fixing part 703, the second fixing part 106 and the fixing part 8 without creative labor, which should also be included in the scope of the present application. protected range.

Further, the bottom of the installation hole 105 is provided with an ejection hole 107, and the ejection hole 107 runs through the flow channel plate 1; the ejection hole 107 is used for passing the ejector rod (not shown in the drawings), and the ejector rod is used for Then push out the channel adapter block 7 from the installation hole 105 . In this way, when disassembling the flow channel adapter block 7, first remove the fixing part 8 to release the fixation between the flow channel adapter block 7 and the flow channel plate 1, and then use the ejector rod to pass through the ejection hole 107 to insert the The runner adapter block 7 only needs to be ejected from the installation hole 105 from bottom to top, and has a simple structure and strong practicability.

This embodiment also discloses an injection mold, which includes the oblique hot nozzle hot runner system of the above embodiment. In this way, by applying the inclined hot nozzle hot runner system of the above-mentioned embodiment to the injection mold, by setting the main flow nozzle 2 and the obliquely arranged first hot nozzle 3 on the single runner plate 1, the main flow nozzle 2. The first hot nozzle 3 and the flow channel plate 1 form an integral body. At the same time, the main flow channel 101 and the first branch flow channel 102 are arranged inside the flow channel plate 1. A runner 102 and a first hot nozzle 3 are used for injection of molten plastic from the injection molding machine into the mold cavity 4 for cooling and molding. Different from the need to set multiple runner plates 1 in the related art, this embodiment can simplify the structure of the hot runner system by adopting an integral design, so as to avoid the increase of the thickness of the mold base and the increase of the cost of the hot runner system.

It should be noted that the oblique hot nozzle hot runner system and other contents of the injection mold disclosed in the present invention are prior art and will not be repeated here.

In addition, it should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indications are only used to explain the direction in a certain posture ( As shown in the accompanying drawings), if the specific posture changes, the directional indication will also change accordingly.

In addition, it should be noted that the descriptions involving "first", "second" and so on in the present invention are only for descriptive purposes, and should not be understood as indicating or implying their relative importance or implicitly indicating the indicated technical features quantity. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present invention.

The above are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any direct or indirect application of the present invention in other related technical fields is included in the patent protection scope of the present invention.

Claims (10)

1. A hot runner system with oblique hot nozzle, characterized in that: it includes a runner plate, the runner plate is provided with a main flow nozzle and a first hot nozzle arranged obliquely, and the main flow nozzle is used to connect the injection molding machine , the first hot nozzle is used to connect the mold cavity; the inside of the runner plate includes a main channel and a first runner, the main runner nozzle, the main channel, the first runner and the first runner The first hot nozzles are sequentially connected to allow molten plastic to be injected from the injection molding machine into the cavity of the mold for cooling and molding. 2. The inclined hot nozzle hot runner system according to claim 1, characterized in that: the surface of the runner plate away from the mold cavity is provided with a first inclined plane, and the first inclined plane and the first inclined plane The arrangement directions of a hot nozzle are perpendicular to each other. 3. The oblique hot nozzle hot runner system according to claim 1, characterized in that: the runner plate is provided with a vertically arranged second hot nozzle, and the second hot nozzle is used to connect the mold cavity ; The inside of the flow channel plate includes a second flow channel, and the two ends of the second flow channel communicate with the main flow channel and the second hot nozzle respectively. 4 . The inclined hot nozzle hot runner system according to claim 3 , wherein the first hot nozzle and the second hot nozzle are both configured as valve needle type hot runners. 5. The inclined hot nozzle hot runner system according to claim 3, characterized in that: the first hot nozzle and the second hot nozzle are combined to form a hot nozzle assembly, and the runner plate includes several of the hot nozzles A nozzle assembly, and several of the hot nozzle assemblies are distributed in an equidistant array in an annular array with the main flow nozzle as the axis. 6. The inclined hot nozzle hot runner system according to claim 3, characterized in that: a runner adapter block is provided at the intersection of the main channel, the first runner and the second runner, The runner adapter block is used to guide the plastic in molten state to flow from the main runner to the first runner or the second runner. 7. The inclined hot nozzle hot runner system according to claim 6, characterized in that: the side of the runner adapter block is provided with a first concave hole and several second concave holes, and the first concave hole It communicates with several of the second concave holes inside the flow channel adapter block; wherein the first concave hole communicates with the main flow channel, and the second concave hole communicates with the first branch channel or The second branch channels are connected. 8. The inclined hot nozzle hot runner system according to claim 6, characterized in that: the top edge of the runner adapter block is provided with a first fixing part, and the runner plate is used to place the runner The side of the mounting hole of the adapter block is provided with a second fixing part, and the combination of the first fixing part and the second fixing part is used to connect a fixing piece, and the fixing piece is used to connect the flow channel adapter block It is fixed with the flow channel plate. 9. The inclined hot nozzle hot runner system according to claim 8, characterized in that: the bottom of the installation hole is provided with an ejection hole, and the ejection hole runs through the runner plate; the ejection hole The ejector rod is used for passing through the ejector rod, and the ejector rod is used for ejecting the flow channel adapter block from the installation hole. 10. An injection mold, characterized in that it comprises the oblique hot nozzle hot runner system according to any one of claims 1-9.

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