A hot runner multi-tip hot nozzle

Abstract

The utility model discloses a hot runner multi -nozzle core hot nozzle relates to hot runner injection molding technical field, including the hot nozzle body and the heat -proof sleeve, the inside of hot nozzle body is provided with the shunt hot runner, the outer surface of hot nozzle body is provided with the heating element, the inner wall fixed mounting of heat -proof sleeve has the heat -proof cotton, the bottom of heat -proof sleeve is provided with the nozzle core body.

Description

Technical Field

[0001] This utility model relates to the field of hot runner injection molding technology, specifically a hot runner multi-nozzle core hot nozzle. Background Technology

[0002] In hot runner injection molding technology, the hot nozzle is a key component for melt delivery, and its structural design directly affects the molding quality and production efficiency of injection molded products.

[0003] Chinese utility model patent CN219055134U discloses a novel hot runner multi-nozzle hot nozzle, comprising a hot nozzle body and a nozzle core body. The hot nozzle body has multiple first hot runner channels inside, with the bottom end of each channel connected to a mounting groove with a bottom opening. The nozzle core body is installed inside the mounting groove. A heating sleeve is fitted onto the surface of the hot nozzle body, and a heating component is located inside the heating sleeve. The flange at the top of the heating sleeve is fixed to the bottom of the flange of the hot nozzle body by bolts. The surface of the nozzle core body is supported inside the heating sleeve, and the bottom end of the nozzle core body extends outside the heating sleeve. The nozzle core body includes a mounting part and an injection port. This utility model solves the problem that the hot runner multi-nozzle hot nozzle simply uses a threaded nozzle core for connection between the nozzle core and the hot nozzle body, resulting in a tighter connection but a less effective way of distributing the pressure on the nozzle core.

[0004] Multi-nozzle hot runners suffer from poor heat insulation, leading to large fluctuations in melt temperature during injection molding and affecting product consistency. Therefore, a hot runner multi-nozzle hot runner is needed to solve these problems. Utility Model Content

[0005] This invention provides a hot runner multi-nozzle core hot nozzle to solve the problems in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hot runner multi-nozzle hot nozzle, comprising a hot nozzle body and a heat insulation sleeve, wherein a flow-dividing hot runner is provided inside the hot nozzle body, a heating component is provided on the outer surface of the hot nozzle body, heat insulation cotton is fixedly installed on the inner wall of the heat insulation sleeve, and a nozzle core body is provided at the bottom of the heat insulation sleeve.

[0007] Furthermore, the outer surface of the hot nozzle body and the heating assembly is fixedly connected to the inside of the heat insulation sleeve.

[0008] Furthermore, the number of the nozzle core bodies is the same as the number of the branch ends on the branch hot runner; the branch ends on the branch hot runner are connected to multiple nozzle core bodies, and a sealing device is provided at the connection between the branch ends on the branch hot runner and the multiple nozzle core bodies, and the connection between the branch ends on the branch hot runner and the multiple nozzle core bodies is fixedly connected.

[0009] Furthermore, the insulation cotton separates the heating components from the insulation sleeve.

[0010] Furthermore, the outer surface of the hot nozzle body near the heating element is made of low thermal conductivity metal iron or stainless steel.

[0011] Compared with the prior art, this utility model provides a hot runner multi-nozzle core hot nozzle, which has the following beneficial effects: 1. This hot runner multi-nozzle core hot nozzle forms a double heat insulation protection by setting up a local structure of heat insulation cotton and low thermal conductivity metal material in the hot nozzle body: the heat insulation cotton blocks the heat transfer from the heating component to the heat insulation sleeve, and the low thermal conductivity metal inhibits the heat diffusion to the outside of the hot nozzle body, which significantly reduces heat loss, maintains the stability of the melt temperature, and reduces the impact of temperature fluctuations on product quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This diagram shows the connection relationship between the heat nozzle body and the heat insulation sleeve of this utility model.

[0013] In the diagram: 1. Heat nozzle body; 2. Insulation sleeve; 3. Insulation cotton; 4. Nozzle core body; 5. Heating assembly; 6. Diverting hot runner. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-2 This utility model discloses a hot runner multi-nozzle core hot nozzle, including a hot nozzle body 1 and a heat insulation sleeve 2. The hot nozzle body 1 has a diversion hot runner 6 inside, a heating component 5 is provided on the outer surface of the hot nozzle body 1, heat insulation cotton 3 is fixedly installed on the inner wall of the heat insulation sleeve 2, and a core body 4 is provided at the bottom of the heat insulation sleeve 2.

[0016] Specifically, the outer surface of the hot nozzle body 1 and the heating component 5 are fixedly connected to the inside of the heat insulation sleeve 2.

[0017] In this implementation plan, Specifically, the number of nozzle bodies 4 is the same as the number of branch ends on the branch hot runner 6; the branch ends on the branch hot runner 6 are connected to multiple nozzle bodies 4, and a sealing device is provided at the connection between the branch ends on the branch hot runner 6 and the multiple nozzle bodies 4, and the connection between the branch ends on the branch hot runner 6 and the multiple nozzle bodies 4 is fixedly connected.

[0018] In this implementation plan, Specifically, the insulation cotton 3 separates the heating component 5 from the insulation sleeve 2.

[0019] In this implementation plan, Specifically, the outer surface of the hot nozzle body 1 near the heating element 5 is made of low thermal conductivity metal iron or stainless steel.

[0020] In use, firstly, the multi-nozzle hot runner is assembled into the hot runner system of the injection mold according to the preset position, ensuring that the heat insulation sleeve 2 fits snugly against the mold structure and the nozzle body 4 is aligned with the mold cavity inlet; then, the heating assembly 5 is activated, which heats the nozzle body 1. The nozzle body 1 transfers heat to the internal branch hot runner 6 through its own thermal conductivity, maintaining the branch hot runner 6 at the required process temperature of the melt; under the synergistic effect of the heat insulation cotton 3 and the low thermal conductivity metal, the heat generated by the heating assembly 5 is mainly concentrated in... The hot nozzle body 1 and the branch hot runner 6 area reduce heat loss to the external environment. When the injection molding system is started, the melt enters the branch hot runner 6 of the hot nozzle body 1 through the main hot runner channel. The branch hot runner 6 evenly distributes the melt to each branch end. The melt enters the corresponding nozzle core body 4 through the branch end and is finally transported to the mold cavity by the nozzle core body 4 to complete the injection molding process. During the entire use, the sealing device at the connection between the branch end and the nozzle core body 4 always remains sealed to prevent melt leakage and ensure stable operation of the injection molding process.

[0021] In summary, this hot runner multi-nozzle hot nozzle forms a double thermal insulation protection by setting up a local structure of heat insulation cotton 3 and a hot nozzle body 1 made of low thermal conductivity metal: the heat insulation cotton 3 blocks the heat transfer from the heating component 5 to the heat insulation sleeve 2, and the low thermal conductivity metal inhibits the diffusion of heat to the outside of the hot nozzle body 1, which significantly reduces heat loss, maintains the stability of the melt temperature, and reduces the impact of temperature fluctuations on product quality.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot runner multi-nozzle core hot nozzle, comprising a hot nozzle body (1) and a heat insulation sleeve (2), characterized in that: The hot nozzle body (1) has a heat flow channel (6) inside, a heating component (5) is provided on the outer surface of the hot nozzle body (1), heat insulation cotton (3) is fixedly installed on the inner wall of the heat insulation sleeve (2), and a nozzle core body (4) is provided at the bottom of the heat insulation sleeve (2).

2. A hot runner multi-nozzle core hot nozzle according to claim 1, characterized in that: The outer surfaces of the heat nozzle body (1) and the heating assembly (5) are fixedly connected to the interior of the heat insulation sleeve (2).

3. A hot runner multi-nozzle core hot nozzle according to claim 1, characterized in that: The number of the nozzle body (4) is the same as the number of the branch ends on the branch hot runner (6); the branch ends on the branch hot runner (6) are connected to multiple nozzle bodies (4), and a sealing device is provided at the connection between the branch ends on the branch hot runner (6) and multiple nozzle bodies (4), and the connection between the branch ends on the branch hot runner (6) and multiple nozzle bodies (4) is fixedly connected.

4. A hot runner multi-nozzle core hot nozzle according to claim 1, characterized in that: The insulation cotton (3) separates the heating component (5) from the insulation sleeve (2).

5. A hot runner multi-nozzle core hot nozzle according to claim 1, characterized in that: The outer surface of the heat nozzle body (1) near the heating assembly (5) is made of low thermal conductivity metal iron or stainless steel.

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