Nozzle structure and hot runner system

Abstract

This utility model relates to the field of injection molding production technology, and in particular to nozzle structure and hot runner system. The nozzle structure within the hot runner system includes a hot nozzle, a heating sleeve, and an elastic locking structure. The heating sleeve is axially fitted around the outer periphery of the hot nozzle. The elastic locking structure is radially disposed between the hot nozzle and the heating sleeve. The elastic locking structure includes a stop locking member and an elastic member. The stop locking member includes a first stop locking part and a second stop locking part. The hot nozzle has a radially extending receiving groove on its axial outer peripheral wall. The heating sleeve has a radially extending receiving through hole. The size of the receiving groove is larger than the size of the receiving through hole. The first stop locking part slides radially with the receiving groove, and the second stop locking part slides radially with the receiving through hole. One axial end of the elastic member is fixedly connected to the bottom of the receiving groove, and the other axial end of the elastic member is fixedly connected to the first stop locking part. The elastic member is configured to drive the stop locking member to move radially away from the hot nozzle.

Description

Technical Field

[0001] This utility model relates to the field of injection molding production technology, and in particular to nozzle structure and hot runner system. Background Technology

[0002] A hot runner system is a heating component system in injection molds used to inject molten plastic particles into the mold cavity. Its structure mainly consists of nozzles, manifolds, and a temperature control chamber. Hot runner systems effectively improve injection molding efficiency, reduce material waste, and lower maintenance costs. The nozzle includes a hot nozzle and a heating jacket. The hot nozzle is the terminal component in the hot runner system that directly injects molten plastic into the mold cavity, acting as a "bridge" connecting the manifold and the mold cavity. The hot nozzle is responsible for transporting the high-temperature melt from the manifold to the cavity and ensuring that the melt remains molten during filling, preventing premature solidification. The heating jacket is an auxiliary heating component that surrounds the hot nozzle. Through close contact with the outer wall of the hot nozzle, it transfers heat to the hot nozzle body, compensating for temperature loss due to heat dissipation and ensuring uniform temperature throughout the hot nozzle.

[0003] In existing technologies, the heating jacket is fixed to the periphery of the hot nozzle using screws or clamps. However, these methods are difficult to assemble and disassemble, requiring tools to tighten the screws or clamps during assembly, limiting operating space, and resulting in low efficiency. Furthermore, disassembly requires loosening each fastener individually, posing a high risk in high-temperature environments. Additionally, because both screw and clamp methods rely on manual tightening, inconsistent tightening force leads to uneven pressure distribution on the contact surface between the heating jacket and the hot nozzle, causing localized overheating.

[0004] Therefore, there is an urgent need to invent nozzle structures and hot runner systems to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a nozzle structure and a hot runner system to achieve elastic locking between the hot nozzle and the heating jacket. This not only provides a good locking effect but also makes the operation simple and the disassembly and assembly convenient.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The nozzle structure includes:

[0008] A hot nozzle having an axially extending feed channel for conveying adhesive liquid;

[0009] A heating sleeve, axially fitted around the outer periphery of the heating nozzle, is configured to heat the heating nozzle; and

[0010] An elastic locking structure is radially disposed between the hot nozzle and the heating sleeve. The elastic locking structure includes a stop locking member and an elastic member. The stop locking member includes a first stop locking part and a second stop locking part. The hot nozzle has a receiving groove extending radially on its outer peripheral wall along the axial direction. The heating sleeve has a receiving through hole along the radial direction. The size of the receiving groove is larger than the size of the receiving through hole. The first stop locking part slides in cooperation with the receiving groove along the radial direction, and the second stop locking part slides in cooperation with the receiving through hole along the radial direction.

[0011] One axial end of the elastic element is fixedly connected to the bottom of the receiving groove, and the other axial end of the elastic element is fixedly connected to the first stop locking part. The elastic element is configured to drive the stop locking part to move radially away from the hot nozzle.

[0012] As an alternative, the end of the second stop locking part away from the first stop locking part is hemispherical.

[0013] As an alternative, the length of the second stop locking part along the radial direction is not less than two-thirds of the length of the receiving through hole along the radial direction.

[0014] As an optional solution, the nozzle structure further includes:

[0015] An isolation washer is provided, which is sandwiched radially between the outer peripheral wall of the hot nozzle and the inner cavity wall of the heating sleeve. The isolation washer has a clearance through hole for the second stop locking part to pass through, and the inner cavity wall of the isolation washer is configured to abut against the second stop locking part.

[0016] Alternatively, the size of the clearance through hole is the same as the size of the receiving through hole;

[0017] Alternatively, the size of the clearance through hole is the same as the size of the receiving groove.

[0018] As an optional solution, with the first stop locking part in the receiving groove and the second stop locking part in the receiving through hole, the radial end face of the hot nozzle is flush with the radial end face of the heating sleeve along the axial direction.

[0019] As an optional option, the heating jacket is made of metal.

[0020] As an optional feature, the material conveying channel is located at the axial center of the hot nozzle, and the radial distance between the bottom of the receiving groove and the material conveying channel is not less than half the radius of the hot nozzle.

[0021] As an optional solution, the nozzle structure has multiple sets of elastic locking structures, which are spaced apart, and each set of elastic locking structures corresponds to a receiving groove and a receiving through hole.

[0022] A hot runner system includes a manifold, a temperature control component, and a nozzle structure as described above. The manifold heats the adhesive particles into a liquid and delivers the liquid to the nozzle structure. The temperature control component is communicatively connected to the manifold and controls the heating temperature of the manifold. The nozzle structure is configured to inject the liquid into a mold.

[0023] The beneficial effects of this utility model are:

[0024] The nozzle structure provided by this utility model heats the nozzle by axially sleeved onto the outer periphery of the hot nozzle, ensuring uniform heating of the adhesive during delivery and guaranteeing subsequent injection molding results. An elastic locking structure is provided between the hot nozzle and the heating sleeve in a radial gap. A radially extending receiving groove is formed on the outer peripheral wall of the hot nozzle, and a radially extending receiving through hole is formed on the heating sleeve. The size of the receiving groove is larger than the size of the receiving through hole, allowing the first stop locking part of the stop locking member within the elastic locking structure to slide in cooperation with the receiving groove, and the second stop locking part of the stop locking member within the elastic locking structure... The elastic element slides into the through hole, and the two ends of the elastic element in the elastic locking structure are fixedly connected to the first stop locking part and the bottom of the receiving groove, respectively. The elastic element drives the stop locking part to move radially away from the hot nozzle, which in turn drives the first stop locking part to slide radially away from the hot nozzle in the receiving groove. This causes the second stop locking part in the stop locking part to extend into the receiving through hole of the heating sleeve and abut against the inner wall of the heating sleeve. The stop locking part elastically locks the hot nozzle and the heating sleeve in the axial and radial directions, respectively. This not only has a good locking effect, but also is simple to operate, easy to disassemble and assemble, and convenient for subsequent inspection and maintenance.

[0025] This utility model also provides a hot runner system. By applying the above-mentioned nozzle structure, the hot nozzle and the heating jacket can be elastically locked in both the axial and radial directions. This not only provides a good locking effect, but also makes the operation simple, disassembly and assembly convenient, and facilitates subsequent inspection and maintenance. Attached Figure Description

[0026] Figure 1 This is an axial cross-sectional schematic diagram of a portion of the nozzle structure provided in an embodiment of this utility model;

[0027] Figure 2 This is a radial cross-sectional schematic diagram of a portion of the nozzle structure provided in an embodiment of this utility model;

[0028] Figure 3 yes Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 4 This is a schematic axial cross-sectional view of a portion of the heating jacket provided in an embodiment of this utility model.

[0030] In the picture:

[0031] 100. Hot nozzle; 110. Receiving tank; 120. Material conveying channel;

[0032] 200. Heating jacket; 210. Receiving through hole; 220. Annular positioning groove; 230. Sleeve cavity;

[0033] 300. Elastic locking structure; 310. Stop locking component; 311. First stop locking part; 312. Second stop locking part; 320. Elastic component;

[0034] 400. Isolation gasket. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] A hot runner system is a heating component system in injection molds used to inject molten plastic particles into the mold cavity. Its structure mainly consists of nozzles, manifolds, and a temperature control chamber. Hot runner systems effectively improve injection molding efficiency, reduce material waste, and lower maintenance costs. The nozzle includes a hot nozzle and a heating jacket. The hot nozzle is the terminal component in the hot runner system that directly injects molten plastic into the mold cavity, acting as a "bridge" connecting the manifold and the mold cavity. The hot nozzle is responsible for transporting the high-temperature melt from the manifold to the cavity and ensuring that the melt remains molten during filling, preventing premature solidification. The heating jacket is an auxiliary heating component that surrounds the hot nozzle. Through close contact with the outer wall of the hot nozzle, it transfers heat to the hot nozzle body, compensating for temperature loss due to heat dissipation and ensuring uniform temperature throughout the hot nozzle. In existing technologies, the heating jacket is fixed to the outside of the hot nozzle using screws or clamps. However, screw-fastening or clamp-binding fixing methods are difficult to assemble and disassemble. During assembly, tools are required to tighten screws or clamps, which limits the operating space and reduces efficiency. Disassembly requires loosening fasteners one by one, posing a high risk in high-temperature environments. Furthermore, since screw-fastening or clamp-binding fixing methods are all done manually, inconsistent tightening force leads to uneven pressure distribution on the contact surface between the heating jacket and the hot nozzle, causing localized overheating.

[0040] To address the aforementioned problems, this embodiment provides a nozzle structure to achieve elastic locking and fixation between the heating jacket and the hot nozzle. Specifically, as follows... Figures 1-3As shown, the nozzle structure includes a heating nozzle 100, a heating sleeve 200, and an elastic locking structure 300. The heating nozzle 100 has an axially extending material delivery channel 120 for conveying adhesive. The heating sleeve 200 is axially sleeved around the outer periphery of the heating nozzle 100 and is configured to heat the heating nozzle 100. The elastic locking structure 300 is radially disposed between the heating nozzle 100 and the heating sleeve 200. The elastic locking structure 300 includes a stop locking member 310 and an elastic member 320. The stop locking member 310 includes a first stop locking portion 311 and a second stop locking portion 312. The heating nozzle 100 extends axially... The outer peripheral wall has a radially extending receiving groove 110, and the heating sleeve 200 has a radially extending receiving through hole 210. The size of the receiving groove 110 is larger than the size of the receiving through hole 210. The first stop locking part 311 is radially slidably engaged with the receiving groove 110, and the second stop locking part 312 is radially slidably engaged with the receiving through hole 210. One axial end of the elastic member 320 is fixedly connected to the bottom of the receiving groove 110, and the other axial end of the elastic member 320 is fixedly connected to the first stop locking part 311. The elastic member 320 is configured to drive the stop locking part 310 to move radially away from the hot nozzle 100.

[0041] This nozzle structure heats the nozzle 100 by axially sleeved a heating sleeve 200 around the outer periphery of the hot nozzle 100. This ensures uniform heating of the adhesive during delivery, guaranteeing optimal injection molding results. An elastic locking structure 300 is provided between the hot nozzle 100 and the heating sleeve 200 in a radial gap. A radially extending receiving groove 110 is formed on the outer peripheral wall of the hot nozzle 100, and a radially extending receiving through hole 210 is formed on the heating sleeve 200. The size of the receiving groove 110 is larger than the size of the receiving through hole 210, allowing the first stop locking part 311 of the stop locking member 310 within the elastic locking structure 300 to slide against the receiving groove 110, and the second stop locking part 312 of the stop locking member 310 within the elastic locking structure 300 to slide against the receiving groove 110. The through hole 210 slides into the elastic element 320 in the elastic locking structure 300, fixing the two ends of the elastic element 320 to the first stop locking part 311 and the bottom of the receiving groove 110 respectively. The elastic element 320 drives the stop locking part 310 to move radially away from the hot nozzle 100, thereby driving the first stop locking part 311 to slide radially away from the hot nozzle 100 in the receiving groove 110. This causes the second stop locking part 312 in the stop locking part 310 to extend into the receiving through hole 210 of the heating sleeve 200 and make the first stop locking part 311 abut against the inner wall of the heating sleeve 200. The stop locking part 310 elastically locks the hot nozzle 100 and the heating sleeve 200 in the axial and radial directions respectively. This not only has a good locking effect, but also is simple to operate, easy to disassemble and assemble, and convenient for subsequent inspection and maintenance.

[0042] It should be noted that in this embodiment, the elastic element 320 is a spring, and the two axial ends of the spring are fixedly connected to the first stop locking part 311 and the bottom of the receiving groove 110, respectively. The spring has a simple structure, small size, and is easy to assemble and disassemble.

[0043] Furthermore, to ensure the heating efficiency of the heating jacket 200, it is made of a metal material, utilizing the excellent thermal conductivity of the metal to achieve rapid heating of the hot nozzle 100. Specifically, in this embodiment, the heating jacket 200 is made of a copper alloy. In other embodiments, the heating jacket 200 may also be made of stainless steel or other metal materials; this embodiment does not impose any specific limitations.

[0044] As an optional solution, with the first stop locking part 311 in the receiving groove 110 and the second stop locking part 312 in the receiving through hole 210, the radial end face of the hot nozzle 100 is flush with the radial end face of the heating sleeve 200 along the axial direction. By having the first stop locking part 311 in the receiving groove 110 and the second stop locking part 312 in the receiving through hole 210, making the radial end face of the hot nozzle 100 flush with the radial end face of the heating sleeve 200 not only improves the overall aesthetics of the nozzle structure, but also makes it easier to observe whether the stop locking part 310 locks the hot nozzle 100 and the heating sleeve 200. It should be noted that in this embodiment, when the first stop locking part 311 is in the receiving groove 110 and the second stop locking part 312 is in the receiving through hole 210, the radial end face of the liquid outlet end of the hot nozzle 100 is flush with the radial end face of the heating sleeve 200, so as to facilitate observation of the relative position of the hot nozzle 100 and the heating sleeve 200, while avoiding interference between the liquid outlet end of the hot nozzle 100 and the heating sleeve 200.

[0045] To ensure the locking effect of the stop locking member 310 on the hot nozzle 100 and the heating sleeve 200, the radial length of the second stop locking part 312 is not less than two-thirds of the radial length of the receiving through hole 210. By ensuring that the radial length of the second stop locking part 312 is not less than two-thirds of the radial length of the receiving through hole 210, when the stop locking member 310 locks the hot nozzle 100 and the heating sleeve 200 axially and radially, it can be guaranteed that the second stop locking part 312 extends sufficiently into the receiving through hole 210 radially. This prevents the stop locking member 310 from failing to lock the hot nozzle 100 and the heating sleeve 200 due to the second stop locking part 312 slipping out of the receiving through hole 210, thereby improving the locking effect of the stop locking member 310 on the hot nozzle 100 and the heating sleeve 200.

[0046] As an optional feature, the end of the second stop locking part 312 away from the first stop locking part 311 is hemispherical. When it is necessary to adjust the relative position of the second stop locking part 312 and the receiving through hole 210 along the axial direction, due to the presence of the elastic member 320, the elastic member 320 will drive the end of the second stop locking part 312 away from the first stop locking part 311 to abut against the inner wall of the heating sleeve 200 until the second stop locking part 312 is directly opposite the receiving through hole 210. By setting the end of the second stop locking part 312 away from the first stop locking part 311 to be hemispherical, when the second stop locking part 312 is directly opposite the receiving through hole 210, the shape of the hemispherical surface can be used to guide the second stop locking part 312 to slide into the receiving through hole 210. In addition, the hemispherical surface can also guide the second stop locking part 312 to slide out of the receiving through hole 210.

[0047] In an optional embodiment, the nozzle structure further includes an isolation washer 400, which is radially sandwiched between the outer peripheral wall of the hot nozzle 100 and the inner cavity wall of the heating sleeve 200. The isolation washer 400 has a clearance through-hole for the second stop locking part 312 to pass through. By sandwiching the isolation washer 400 between the outer peripheral wall of the hot nozzle 100 and the inner cavity wall of the heating sleeve 200, and by providing a clearance through-hole for the second stop locking part 312 to pass through, when the relative position of the second stop locking part 312 and the receiving through-hole 210 is adjusted radially, the end of the second stop locking part 312 away from the first stop locking part 311 can abut against the inner cavity wall of the isolation washer 400. This prevents direct contact between the second stop locking part 312 and the inner cavity wall of the heating sleeve 200, improving the protection of both the inner cavity wall of the heating sleeve 200 and the second stop locking part 312.

[0048] In this embodiment, the size of the clearance through-hole is the same as the size of the receiving through-hole 210. In other embodiments, the size of the clearance through-hole may also be the same as the size of the receiving groove 110; this embodiment does not impose a specific limitation. Furthermore, in this embodiment, the insulating gasket 400 is made of stainless steel, which has excellent thermal conductivity and high structural strength. In other embodiments, the insulating gasket 400 may also be made of other metal materials; this embodiment does not impose a specific limitation.

[0049] As an optional solution, such as Figure 4As shown, the heating sleeve 200 is provided with an annular positioning groove 220. The annular positioning groove 220 is located at one axial end of the sleeve cavity 230 inside the heating sleeve 200 for sleeved heating nozzle 100. The axial dimension of the annular positioning groove 220 is the same as the axial dimension of the isolation gasket 400. The annular positioning groove 220 is used to accommodate the isolation gasket 400. When assembling the isolation gasket 400, the hot nozzle 100, the heating sleeve 200, and the elastic locking structure 300 together, first assemble the elastic locking structure 300 with the hot nozzle 100, then put the isolation gasket 400 on the outer periphery of the hot nozzle 100, so that the second stop locking part 312 in the stop locking member 310 in the elastic locking structure 300 extends into the clearance through hole in the isolation gasket 400, then make the second stop locking part 312 and the receiving through hole 210 in the heating sleeve 200 radially aligned, and finally put the heating sleeve 200 on the outer periphery of the isolation gasket 400 and the hot nozzle 100 axially. When the isolation gasket 400 abuts against the groove wall of the annular positioning groove 220 in the heating sleeve 200 axially, the second stop locking part 312 just extends into the receiving through hole 210.

[0050] Optionally, the material conveying channel 120 within the hot nozzle 100 is located at the axial center of the hot nozzle 100, and the radial distance between the bottom of the receiving groove 110 and the material conveying channel 120 is not less than half the radius of the hot nozzle 100. By ensuring that the radial distance between the bottom of the receiving groove 110 and the material conveying channel 120 is not less than half the radius of the hot nozzle 100, sufficient structural strength of the hot nozzle 100 can be guaranteed based on the presence of the receiving groove 110. It should be noted that in this embodiment, the radial distance between the bottom of the receiving groove 110 and the material conveying channel 120 is equal to half the radius of the hot nozzle 100. In other embodiments, the radial distance between the bottom of the receiving groove 110 and the material conveying channel 120 can also be adjusted within a range not less than half the radius of the hot nozzle 100; this embodiment does not impose a specific limitation.

[0051] In an optional embodiment, the nozzle structure has multiple sets of elastic locking structures 300, which are spaced apart. Each set of elastic locking structures 300 corresponds to a receiving groove 110 and a receiving through hole 210. By providing multiple sets of spaced elastic locking structures 300 within the nozzle structure, each set corresponding to a receiving groove 110 and a receiving through hole 210, the multiple sets of elastic locking structures 300 collectively lock the heating sleeve 200 and the hot nozzle 100 along the axial and radial directions, further improving the locking effect on the heating sleeve 200 and the hot nozzle 100. It should be noted that, while ensuring the structural strength of the hot nozzle 100 and the heating sleeve 200, the number of sets of elastic locking structures 300 can be arbitrarily adjusted according to actual needs; this embodiment does not impose a specific limitation.

[0052] This embodiment also provides a hot runner system. The hot runner system includes a manifold, a temperature control component, and the aforementioned nozzle structure. The manifold heats the adhesive particles into a liquid and delivers the liquid to the nozzle structure. The temperature control component is communicatively connected to the manifold and controls the heating temperature of the manifold. The nozzle structure is configured to inject the liquid into the mold. By applying the aforementioned nozzle structure, this hot runner system can elastically lock the hot nozzle 100 and the heating sleeve 200 along both the axial and radial directions, providing not only good locking performance but also simple operation, convenient disassembly and assembly, and easy subsequent inspection and maintenance.

[0053] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A nozzle structure, characterized in that, include: A hot nozzle (100) has an axially extending feed channel (120) for conveying adhesive liquid; A heating sleeve (200) is axially fitted around the outer periphery of the heating nozzle (100), the heating sleeve (200) being configured to heat the heating nozzle (100); and An elastic locking structure (300) is radially disposed between the hot nozzle (100) and the heating sleeve (200). The elastic locking structure (300) includes a stop locking member (310) and an elastic member (320). The stop locking member (310) includes a first stop locking part (311) and a second stop locking part (312). The hot nozzle (100) has a receiving groove (110) extending radially on its outer peripheral wall along the axial direction. The heating sleeve (200) has a receiving through hole (210) along the radial direction. The size of the receiving groove (110) is larger than the size of the receiving through hole (210). The first stop locking part (311) slides in cooperation with the receiving groove (110) along the radial direction, and the second stop locking part (312) slides in cooperation with the receiving through hole (210) along the radial direction. One axial end of the elastic element (320) is fixedly connected to the bottom of the receiving groove (110), and the other axial end of the elastic element (320) is fixedly connected to the first stop locking part (311). The elastic element (320) is configured to drive the stop locking part (310) to move in the radial direction away from the hot nozzle (100).

2. The nozzle structure according to claim 1, characterized in that, The end of the second stop locking part (312) away from the first stop locking part (311) is hemispherical.

3. The nozzle structure according to claim 1, characterized in that, The length of the second stop locking part (312) along the radial direction is not less than two-thirds of the length of the receiving through hole (210) along the radial direction.

4. The nozzle structure according to claim 1, characterized in that, The nozzle structure also includes: An isolation washer (400) is disposed radially between the outer peripheral wall of the hot nozzle (100) and the inner cavity wall of the heating sleeve (200). The isolation washer (400) has a clearance through hole for the second stop locking part (312) to pass through. The inner cavity wall of the isolation washer (400) is configured to abut against the second stop locking part (312).

5. The nozzle structure according to claim 4, characterized in that, The size of the clearance through hole is the same as the size of the receiving through hole (210); Alternatively, the size of the clearance through hole is the same as the size of the receiving groove (110).

6. The nozzle structure according to claim 1, characterized in that, With the first stop locking part (311) in the receiving groove (110) and the second stop locking part (312) in the receiving through hole (210), the radial end face of the hot nozzle (100) is flush with the radial end face of the heating sleeve (200) along the axial direction.

7. The nozzle structure according to claim 1, characterized in that, The heating jacket (200) is made of metal.

8. The nozzle structure according to claim 7, characterized in that, The material conveying channel (120) is located at the axial center of the hot nozzle (100), and the radial distance between the bottom of the receiving groove (110) and the material conveying channel (120) is not less than half the radius of the hot nozzle (100).

9. The nozzle structure according to claim 1, characterized in that, The nozzle structure has multiple sets of elastic locking structures (300), which are spaced apart. Each set of elastic locking structures (300) is corresponding to a receiving groove (110) and a receiving through hole (210).

10. A hot runner system, characterized in that, The device includes a manifold, a temperature control component, and a nozzle structure as described in any one of claims 1 to 9. The manifold is capable of heating adhesive particles into the adhesive liquid and delivering the adhesive liquid to the nozzle structure. The temperature control component is communicatively connected to the manifold and is used to control the heating temperature of the manifold. The nozzle structure is configured to inject the adhesive liquid into a mold.

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