Novel anti-glue-leakage side glue feeding hot nozzle
By introducing a protective sleeve and sealing structure into the side-entry hot nozzle, the problems of glue leakage and heater damage are solved, and a variable gate design is realized, which improves the versatility of the hot nozzle and the applicability of the mold.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN WOBO PRECISION TECHNOLOGY CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-15
AI Technical Summary
Existing side-entry hot runners are prone to leakage, the assembly accuracy between the runner tip and the mold is not easy to guarantee, and the heater and temperature sensing wire are easily damaged, and the number of gates cannot be changed.
A novel anti-leakage side-injection hot nozzle is designed. By fixing a temperature sensing wire and a heater to the hot nozzle body and covering it with a protective sleeve, a sealing position and a gate are set. The structure of the protective sleeve is optimized to compensate for mold precision errors, thereby realizing a variable gate design.
It effectively prevents glue leakage, protects the heater and temperature sensing wire, and expands the application range of molds in multiple scenarios.
Smart Images

Figure CN224240242U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hot runner technology, and in particular to a novel leak-proof side-inlet hot nozzle. Background Technology
[0002] Side-entry hot runners are widely used in plastic injection molding processes. They allow for more precise control of the molten plastic flow path, leading to more uniform filling and faster cycle times, while reducing internal stress and the risk of warping and deformation. However, current hot runner side-entry hot runners have significant drawbacks: First, they typically only allow one nozzle tip to be assembled onto the main body, making them prone to leakage and unable to adjust the number of gates. Second, the assembly precision between the nozzle tip and the mold is difficult to guarantee, and leakage can easily damage the heater and temperature sensing wires of the entire hot runner. Therefore, designing a new type of leak-proof side-entry hot runner is essential. Utility Model Content
[0003] The purpose of this invention is to provide a novel anti-leakage side-feed hot nozzle, which solves the problems of easy leakage, inability to change the number of gates, and difficulty in ensuring the assembly accuracy between the nozzle tip and the mold. After leakage, the heater and temperature sensing wire of the entire hot nozzle are easily damaged.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a novel anti-leakage glue side-injection hot nozzle, including a hot nozzle body, a protective sleeve, a heater, a temperature sensing wire and a gate, wherein the temperature sensing wire is fixedly connected to the hot nozzle body, and a flow channel is opened in the hot nozzle body.
[0005] As a further technical solution of this utility model, a heater is fixedly connected to the hot nozzle body.
[0006] As a further technical solution of this utility model, the heating nozzle body is fixedly connected to the temperature sensing wire.
[0007] As a further technical solution of this utility model, a protective sleeve is fixedly connected to the hot nozzle body.
[0008] As a further technical solution of this utility model, the protective sleeve is provided with a first sealing position and a second sealing position.
[0009] As a further technical solution of this utility model, a heater is attached tightly to the protective sleeve.
[0010] As a further technical solution of this utility model, the protective sleeve is provided with a gate.
[0011] This utility model provides a novel anti-leakage side-injection hot nozzle, the advantages of which are as follows: by using the hot nozzle body as a support, the temperature sensing wire and heater are installed inside the hot nozzle body; using the hot nozzle body as a support, a protective sleeve is placed on the hot nozzle body; using the protective sleeve as a support, the gate is opened on the protective sleeve; and the heater is set on the hot nozzle body, tightly attached to the protective sleeve. By adjusting the structure of the sealing position of the traditional side-injection hot nozzle, the problem of hot runner leakage caused by mold processing accuracy errors is compensated. At the same time, by optimizing the structure of the protective sleeve, the possibility of external force damaging the heater and temperature sensing wire is eliminated. In addition, the number of side-injection gates is designed to be variable, expanding the application range of multi-scenario molds with one nozzle for multiple uses. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is an overall sectional view of the present invention;
[0015] Figure 3 This is a top view of a gate of this utility model;
[0016] Figure 4 This is a top view of the two gates of this utility model;
[0017] Figure 5 This is a top view of the three gates of this utility model;
[0018] Figure 6 This is a top view of the four gates of this utility model.
[0019] In the diagram: 1. Hot nozzle body; 2. Protective sleeve; 3. First sealing position; 4. Second sealing position; 5. Heater; 6. Temperature sensing wire; 7. Gate; 8. Runner. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0021] Please see the appendix Figure 1 -Appendix Figure 6 An embodiment of this utility model is provided: a novel anti-leakage side-injection hot nozzle, including a hot nozzle body 1, a protective sleeve 2, a heater 5, a temperature sensing wire 6, and a gate 7. The temperature sensing wire 6 is fixedly connected to the hot nozzle body 1, and the temperature sensing wire 6 monitors the temperature of the melt in real time. The heater 5 is fixedly connected to the hot nozzle body 1. The heater 5 is fixedly connected to the temperature sensing wire 6. The protective sleeve 2 is fitted onto the hot nozzle body 1. The protective sleeve 2 is respectively provided with a first sealing position 3 and a second sealing position 4. The heater 5 is tightly attached to the protective sleeve 2. The heater 5 is used to maintain the flowability of the melt and prevent leakage and blockage. The gate 7 is opened on the protective sleeve 2, and the flow channel (8) is opened inside the hot nozzle body (1).
[0022] Specifically, in use, the heater 5 and temperature sensing wire 6 are first installed into the hot nozzle body 1, which is supported by the hot nozzle body 1. The protective sleeve 2 is then placed on the hot nozzle body 1, which is supported by the hot nozzle body 1. The gate 7 is opened on the protective sleeve 2, which is supported by the protective sleeve 2. The heater 5 is then placed on the protective sleeve 2. By adjusting the structure of the traditional side-entry hot nozzle sealing position, the problem of hot runner leakage caused by mold processing accuracy errors is compensated. At the same time, by optimizing the structure of the protective sleeve 2, the possibility of external force damaging the heater 5 and temperature sensing wire 6 is eliminated. In addition, the number of side-entry gates 7 is designed to be variable, which expands the application range of multi-scenario molds with one nozzle for multiple uses.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A novel leak-proof side-injection hot nozzle, comprising a hot nozzle body (1), a protective sleeve (2), a heater (5), a temperature sensing wire (6), and a gate (7), characterized in that: A temperature sensing wire (6) is fixedly connected to the hot nozzle body (1), and a flow channel (8) is opened inside the hot nozzle body (1).
2. The novel leak-proof side-injection hot nozzle according to claim 1, characterized in that: A heater (5) is fixedly connected to the hot nozzle body (1).
3. The novel leak-proof side-injection hot nozzle according to claim 1, characterized in that: A temperature sensing wire (6) is fixedly connected to the heating nozzle body (1).
4. The novel leak-proof side-injection hot nozzle according to claim 2, characterized in that: A protective sleeve (2) is fitted onto the hot nozzle body (1).
5. The novel leak-proof side-injection hot nozzle according to claim 4, characterized in that: The protective sleeve (2) is provided with a first sealing position (3) and a second sealing position (4).
6. The novel leak-proof side-injection hot nozzle according to claim 1, characterized in that: The heater (5) is attached tightly to the protective sleeve (2).
7. The novel leak-proof side-injection hot nozzle according to claim 1, characterized in that: The protective sleeve (2) has a gate (7).