Valve needle sleeve assembly and hot runner system
By designing a valve needle sleeve assembly with individually replaceable inner core and outer jacket, the problem of easy damage to the valve needle sleeve in the prior art under high temperature and high pressure environment is solved, and the effect of reducing usage costs and improving production standardization is achieved.
Patent Information
- Application Number
- CN202422060136.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-24
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-24
AI Technical Summary
The existing valve needle sleeves are prone to deform or damage in high temperature and high pressure environments, and once the threads of the inner hole or the outer side wall are damaged, the entire valve needle sleeve needs to be replaced, resulting in high cost of use.
A valve needle cover assembly is designed, including an inner core and a jacket, with a through hole on the inner core and an outer side wall of the outer jacket is equipped with external threads. The inner core and the jacket are made of different materials, and the inner core is stronger than the jacket, so that the inner core and jacket can be replaced separately when damaged.
By replacing the inner core and coat separately, the cost of use is reduced and the degree of standardization of production is increased.
Smart Images
Figure CN222946119U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hot runners, in particular to a valve needle sleeve assembly and a hot runner system. Background Art
[0002] The valve needle sleeve is a precision hardware part used in the mold of the hot runner system. It guides and protects the valve needle in the mold to prevent the valve needle from deformation or damage under high temperature and high pressure. Therefore, the material requirements for the production of the valve needle sleeve are high, and accordingly, the price of the valve needle sleeve is also expensive. The existing valve needle sleeve is usually made of one piece, which means that when one of the inner hole in the valve needle sleeve or the outer thread of the outer wall of the valve needle sleeve is damaged, the entire valve needle sleeve will be scrapped and needs to be replaced, resulting in increased use costs.
[0003] Therefore, the existing technology needs to be improved and developed. Utility Model Content
[0004] The utility model aims to provide a valve needle sleeve assembly and a hot runner system, which can reduce the use cost.
[0005] In a first aspect, the utility model provides a valve needle sleeve assembly, which includes: an inner core and an outer sleeve; the inner core is provided with a through hole; the outer sleeve is sleeved on the inner core, and the outer wall of the outer sleeve is provided with an external thread; the side wall of one end of the inner core has a boss extending outward, and the sum of the outward extension length of the boss and the diameter of the inner core is greater than the inner diameter of the outer sleeve.
[0006] According to an embodiment of the present invention, the inner core and the outer shell are made of two different materials, and the strength of the material used to make the inner core is higher than the strength of the material used to make the outer shell.
[0007] According to one embodiment of the utility model, the inner core is made of high-quality steel, and the outer sleeve is made of ordinary steel.
[0008] According to one embodiment of the utility model, one end of the outer sleeve has a groove matched with the shape of the boss, and when the outer sleeve is sleeved on the inner core, the boss is located in the groove.
[0009] According to one embodiment of the present invention, the boss and the inner core are integrally formed.
[0010] According to one embodiment of the present invention, the above-mentioned boss is annular.
[0011] According to one embodiment of the present invention, an inner side wall of one end of the outer sleeve is provided with a guiding inclined surface.
[0012] According to one embodiment of the utility model, the side wall of the inner core is provided with a first thread, and the inner side wall of the outer sleeve is provided with a second thread. When the outer sleeve is sleeved on the inner core, the first thread is threadedly connected with the second thread.
[0013] In a second aspect, the utility model provides a hot runner system, comprising the valve needle sleeve assembly described in the first aspect.
[0014] According to one embodiment of the present invention, the hot runner system further comprises a manifold, on which is provided a mounting groove matching the shape of the valve needle sleeve assembly, and one end of the valve needle sleeve assembly is located in the mounting groove.
[0015] The beneficial effects of the utility model are as follows: the valve needle sleeve assembly and the hot runner system of the utility model provide a through hole on the inner core and an external thread on the outer wall of the outer sleeve, so that when one of the through hole or the external thread is damaged, only the inner core and the outer sleeve need to be replaced separately, which can reduce the use cost compared to replacing the entire valve needle sleeve. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0017] Figure 1 This is a schematic diagram of the structure of the valve needle sleeve assembly in the embodiment of the utility model;
[0018] Figure 2 A cross-sectional view of a valve needle sleeve assembly in an embodiment of the utility model;
[0019] Figure 3 for Figure 2 A partial enlarged view of
[0020] Figure 4 This is a schematic diagram of the structure of a jacket in an embodiment of the utility model;
[0021] Figure 5 It is a cross-sectional view of the cooperation between the valve needle sleeve assembly and the diverter plate in the embodiment of the utility model.
[0022] Description of reference numerals:
[0023] 1. Inner core; 11. Through hole; 12. Boss; 2. Outer sleeve; 21. External thread; 22. Groove; 23. Guide slope; 3. Diverter plate; 31. Mounting groove. DETAILED DESCRIPTION
[0024] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.
[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0026] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0027] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:
[0028] First, as Figure 1 as well as Figure 2 As shown, the utility model provides a valve needle sleeve assembly, comprising an inner core 1 and an outer sleeve 2. The inner core 1 is provided with a through hole 11. The outer sleeve 2 is sleeved on the inner core 1, and the outer wall of the outer sleeve 2 is provided with an external thread 21. The side wall at one end of the inner core 1 has a boss 12 extending outward, and the sum of the outward extension length of the boss 12 and the diameter of the inner core 1 is greater than the inner diameter of the outer sleeve 2.
[0029] Through the above technical solution, when one of the through hole 11 or the external thread 21 is damaged, it is only necessary to replace the inner core 1 and the outer sleeve 2 separately, which can reduce the cost of use compared to replacing the entire valve needle sleeve; at the same time, the outer sleeve 2 can be suitable for inner cores 1 with various sizes of through holes 11, thereby realizing standardized production.
[0030] In some preferred embodiments, the boss 12 is integrally formed with the inner core 1. In specific applications, the boss 12 and the inner core 1 are integrally formed to improve the precision and quality of the inner core 1. Specifically, the boss 12 is annular, which is convenient for processing and production.
[0031] In some preferred embodiments, the inner core 1 and the outer shell 2 are made of two different materials, and the strength of the material used to make the inner core 1 is higher than the strength of the material used to make the outer shell 2. In specific applications, since the outer shell 2 only plays a role in fixing the inner core 1, the inner core 1 and the outer shell 2 can be made of two different materials respectively, which can further reduce the cost compared with using one material. Specifically, the inner core 1 is made of high-quality steel and the outer shell 2 is made of ordinary steel, so that the valve needle can be prevented from deformation or damage in a high temperature and high pressure environment, and the production cost can be saved.
[0032] In some preferred embodiments, one end of the outer sleeve 2 has a groove 22 that matches the shape of the boss 12. When the outer sleeve 2 is sleeved on the inner core 1, the boss 12 is located in the groove 22. In specific applications, by providing a groove 22 that matches the shape of the boss 12 at one end of the outer sleeve 2, the boss 12 can be hidden in the groove 22 without protruding from the outer sleeve 2.
[0033] like Figure 3 and Figure 4 As shown, in some preferred embodiments, the inner side wall of one end of the outer sleeve 2 is provided with a guide slope 23. In specific applications, when assembling the inner core 1 and the outer sleeve 2, the guide slope 23 can guide the inner core 1, making it easier and faster to put the outer sleeve 2 on the inner core 1.
[0034] In some preferred embodiments, the side wall of the inner core 1 is provided with a first thread, and the inner side wall of the outer sleeve 2 is provided with a second thread, and when the outer sleeve 2 is sleeved on the inner core 1, the first thread is threadedly connected with the second thread. In specific applications, the inner core 1 and the outer sleeve 2 can be connected as one body through the threaded connection of the first thread and the second thread, which makes it easier to install the valve needle sleeve assembly to a predetermined position.
[0035] Second, as Figure 5 As shown, the utility model provides a hot runner system, comprising the valve needle sleeve assembly of the first aspect mentioned above.
[0036] In some preferred embodiments, the hot runner system further comprises a manifold 3, on which a mounting groove 31 matching the shape of the valve needle sleeve assembly is provided, and one end of the valve needle sleeve assembly is located in the mounting groove 31. In specific applications, by providing the mounting groove 31 on the manifold 3, the valve needle sleeve assembly can be quickly installed at a predetermined position on the manifold 3, thereby improving the installation efficiency.
[0037] To summarize, in one or more embodiments of the present invention, the valve needle sleeve assembly and hot runner system of the present invention provide a through hole on the inner core and an external thread on the outer wall of the outer sleeve, so that when one of the through hole or the external thread is damaged, only the inner core and the outer sleeve need to be replaced separately, which can reduce the cost of use compared to replacing the entire valve needle sleeve.
[0038] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.
Claims
1. A valve needle sleeve assembly, characterized in that: The invention comprises an inner core (1) and an outer sleeve (2); the inner core (1) is provided with a through hole (11); the outer sleeve (2) is sleeved on the inner core (1), and the outer wall of the outer sleeve (2) is provided with an external thread (21); the side wall at one end of the inner core (1) has a boss (12) extending outwards, and the sum of the outward extension length of the boss (12) and the diameter of the inner core (1) is greater than the inner diameter of the outer sleeve (2).
2. The valve needle sleeve assembly according to claim 1, characterized in that: The inner core (1) and the outer shell (2) are made of two different materials, and the strength of the material used to make the inner core (1) is higher than the strength of the material used to make the outer shell (2).
3. The valve needle sleeve assembly according to claim 2, characterized in that: The inner core (1) is made of high-quality steel, and the outer shell (2) is made of ordinary steel.
4. The valve needle sleeve assembly according to claim 1, characterized in that: One end of the outer sleeve (2) has a groove (22) that matches the shape of the boss (12); when the outer sleeve (2) is sleeved on the inner core (1), the boss (12) is located in the groove (22).
5. The valve needle sleeve assembly according to claim 1, characterized in that: The boss (12) and the inner core (1) are integrally formed.
6. The valve needle sleeve assembly according to claim 1, characterized in that: The boss (12) is annular.
7. The valve needle sleeve assembly according to claim 1, characterized in that: The inner side wall of one end of the outer sleeve (2) is provided with a guiding inclined surface (23).
8. The valve needle sleeve assembly according to claim 1, characterized in that: The side wall of the inner core (1) is provided with a first thread, and the inner side wall of the outer shell (2) is provided with a second thread. When the outer shell (2) is sleeved on the inner core (1), the first thread is threadedly connected with the second thread.
9. A hot runner system, characterized in that: A valve needle sleeve assembly comprising any one of claims 1-8.
10. The hot runner system according to claim 9, characterized in that: It also comprises a diverter plate (3), on which a mounting groove (31) matching the shape of the valve needle sleeve assembly is provided, and one end of the valve needle sleeve assembly is located in the mounting groove (31).