Nozzle cap and hot runner device with same
By designing a nozzle cap with a hollow cavity structure, the problem of difficult to balance the thermal insulation effect and mechanical properties in the prior art is solved, and lower thermal conductivity and better mechanical properties are achieved.
Patent Information
- Application Number
- CN202421505602.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The existing nozzle caps are difficult to find an equalization point between thermal insulation and mechanical properties, resulting in high heat loss and high energy consumption.
A nozzle cap is designed, and has an installation space inside its body, including a first end face, a second end face and several lattice structures. The lattice structure connects and supports both end faces to form a hollow cavity to improve void ratio and reduce heat conductivity.
While ensuring the mechanical properties, the thermal conductivity of the nozzle cap is reduced, the heat dissipation of the shunt plate is reduced, and the thermal insulation effect and mechanical properties are balanced.
Smart Images
Figure CN222792657U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hot runner injection molding, in particular to a nozzle cap and a hot runner device with the nozzle cap. Background Art
[0002] The nozzle cap is a component of the hot runner system nozzle. Its main purpose is to support and pre-press the sealant. Because heat loss needs to be considered, the nozzle cap usually reduces the contact surface with the mold as much as possible.
[0003] Because the hot runner system itself is in a heated state, the purpose is to ensure that the plastic in the manifold and nozzle flow channel is always in a molten state, so the nozzle cap needs to have sufficient mechanical properties while minimizing the thermal conductivity;
[0004] The current nozzle cap is machined and originally made of steel (such as 2316, 3CR13, etc.); in order to reduce heat dissipation, the nozzle cap minimizes the contact surface with the template; for multi-cavity hot runner systems (such as 16-cavity, 32-cavity, 64-cavity, etc.), in order to ensure the balance of multiple cavities, the requirements for heat loss are higher, and expensive alloy materials (TC4) are also used for processing; in order to obtain less heat loss effect.
[0005] The current disadvantage of the nozzle cap is that there is no way to achieve a balance between thermal insulation and mechanical properties; traditional 2316 and 3cr13 materials can achieve good mechanical properties, but poor thermal insulation, the nozzle loses a lot of heat through the contact between the nozzle cap and the mold, and the thermal balance of the nozzle itself is not good, which increases energy loss costs; the thermal conductivity of TC4 is lower than that of 2316, but due to the hardness of TC4 material itself, the contact area cannot be reduced to the extreme, so the advantage of low thermal conductivity itself is not brought into play. Utility Model Content
[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect of poor thermal insulation effect in the prior art, thereby providing a nozzle cap and a hot runner device having the same.
[0007] The utility model provides a nozzle cap, comprising:
[0008] A body having an installation space inside; the installation space is suitable for accommodating the nozzle; one end of the body is suitable for abutting the nozzle, and the other end is suitable for abutting the diverter plate;
[0009] The body includes a first end face, a second end face and a plurality of lattice structures; the first end face and the second end face are parallel and spaced apart, the plurality of lattice structures connect and support the first end face and the second end face, and a hollow cavity is formed between adjacent lattice structures.
[0010] As a preferred embodiment, the lattice structure includes at least two support rod portions, two ends of the support rod portions are respectively connected to the first end face and the second end face, and at least a portion of the middle portion of the support rod portions intersects to form a unit cell portion.
[0011] As a preferred solution, the first end surface is suitable for abutting one end of the nozzle to form an abutting portion, and the top of the abutting portion abuts the nozzle; the side wall of the abutting portion has a protrusion, and the protrusion is suitable for abutting the nozzle.
[0012] As a preferred solution, the installation space includes a first installation space and a second installation space; the first installation space is close to the nozzle; and the second installation space is close to the diverter plate.
[0013] As a preferred solution, the cross-sectional area of the first installation space gradually increases toward the nozzle.
[0014] As a preferred solution, the body is made of titanium alloy.
[0015] As a preferred solution, the body is made using a 3D printing process.
[0016] A hot runner device, characterized by comprising any one of the nozzle caps described above.
[0017] As a preferred solution, it also includes:
[0018] Diverter plate;
[0019] The nozzle is arranged on one side of the diverter plate.
[0020] As a preferred solution, the nozzle is sealed and connected to the diverter plate through the body.
[0021] The technical solution of the utility model has the following advantages:
[0022] 1. The utility model provides a nozzle cap, comprising: a body, the body having an installation space inside; the installation space is suitable for accommodating a nozzle; one end of the body is suitable for abutting the nozzle, and the other end is suitable for abutting the manifold; the body comprises a first end face, a second end face and a plurality of lattice structures; the first end face and the second end face are parallel and spaced apart, a plurality of the lattice structures connect and support the first end face and the second end face, and a hollow cavity is formed between adjacent lattice structures. By arranging the lattice structure between the first end face and the second end face, the porosity of the nozzle cap is increased while ensuring that the nozzle cap has good mechanical properties, so as to reduce the thermal conductivity of the nozzle cap and reduce the heat dissipation of the manifold, thereby simultaneously meeting the requirements of mechanical properties and thermal insulation.
[0023] 2. The utility model provides a nozzle cap, which increases the porosity of the nozzle cap while ensuring the mechanical properties of the lattice structure by arranging the multiple support rods in each lattice structure at intervals, thereby reducing the thermal conductivity of the nozzle cap while ensuring the mechanical properties of the nozzle cap.
[0024] 3. The utility model provides a nozzle cap, the body of which is suitable for abutting one end of the nozzle to form an abutting portion, the top of which abuts against the nozzle; the side wall of the abutting portion has a protrusion, which is suitable for abutting against the nozzle. The abutment of the abutting portion plays a role in sealing the nozzle and the manifold, and plays a role in glue sealing.
[0025] 4. The utility model provides a nozzle cap, wherein the cross-sectional area of the first installation space gradually increases toward the nozzle, so that the area of the first end face gradually decreases. By reducing the contact area between the first end face and the nozzle, heat conduction can be further reduced and the thermal insulation effect can be increased.
[0026] 5. The utility model provides a nozzle cap, the body of which is made of titanium alloy material. Titanium alloy has a series of advantages such as excellent corrosion resistance, small density, high specific strength, good toughness and weldability. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0028] Figure 1 The utility model provides a schematic diagram of the overall structure of a nozzle cap.
[0029] Figure 2 The utility model is a cross-sectional view of a nozzle cap.
[0030] Figure 3 The utility model provides a hot runner device.
[0031] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0032] Description of reference numerals:
[0033] 1. Main body; 2. First end face; 3. Second end face; 4. Lattice structure; 5. Installation space; 51. First installation space; 52. Second installation space; 6. Nozzle; 7. Diverter plate. DETAILED DESCRIPTION
[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0038] Example 1
[0039] like Figure 1 As shown, the utility model provides a nozzle cap, comprising: a body 1, wherein the body 1 has an installation space 5 inside; the installation space 5 is suitable for accommodating a nozzle 6; one end of the body 1 is suitable for abutting the nozzle 6, and the other end is suitable for abutting the diverter plate 7; the body 1 comprises a first end face 2, a second end face 3 and a plurality of lattice structures 4; the first end face 2 and the second end face 3 are parallel and spaced apart, a plurality of the lattice structures 4 connect and support the first end face 2 and the second end face 3, and a hollow cavity is formed between adjacent lattice structures 4. By arranging the lattice structure 4 between the first end face 2 and the second end face 3, the porosity of the nozzle 6 cap is improved while ensuring that the nozzle 6 cap has good mechanical properties, so as to reduce the thermal conductivity of the nozzle 6 cap and reduce the heat dissipation of the diverter plate 7, thereby simultaneously meeting the requirements of mechanical properties and thermal insulation.
[0040] It should be noted that the first end surface 2 is close to the nozzle 6 , and the second end surface 3 is close to the diverter plate 7 .
[0041] Furthermore, the unit cell structure includes at least two support rods, the two ends of which are connected to the first end face 2 and the second end face respectively, and the middle part of the support rods at least partially intersects to form a unit cell. By arranging the plurality of support rods in each lattice structure 4 at intervals, the porosity of the nozzle 6 cap is increased while the mechanical properties of the lattice structure 4 are ensured, thereby reducing the thermal conductivity of the nozzle 6 cap while ensuring the mechanical properties of the nozzle 6 cap.
[0042] It should be noted that the two support rods are arranged crosswise. The unit cell structure is similar to a grid.
[0043] It should be noted that the plurality of lattice structures 4 are arranged in an array around the axis of the body 1. It should be noted that in order to further reduce the thermal conductivity of the nozzle 6 cap, the porosity of the hollow cavity can be further increased, and the material cost can be further reduced by providing the hollow cavity.
[0044] Furthermore, the first end surface 2 is adapted to abut against one end of the nozzle 6 to form an abutting portion, the top of which abuts against the nozzle 6; the side wall of the abutting portion has a protrusion, which is adapted to abut against the nozzle 6. The abutment of the abutting portion increases the sealing performance between the sealing nozzle 6 and the diverter plate 7, thereby achieving a glue seal.
[0045] like Figure 2 As shown, further, the installation space 5 includes a first installation space 51 and a second installation space 52, the first installation space 51 is close to the nozzle 6; the second installation space 52 is close to the diverter plate 7; it should be noted that the size of the second installation space 52 is the same as the size of the nozzle 6, and the second installation space 52 is suitable for fitting with the nozzle 6, the first installation space 51 is slightly larger than the size of the nozzle 6, and the second installation space 52 is arranged outside the nozzle 6.
[0046] Furthermore, the cross-sectional area of the first installation space 51 gradually increases toward the nozzle 6, so that the area of the first end surface 2 gradually decreases, and by reducing the contact area between the first end surface 2 and the nozzle 6, heat conduction can be further reduced, thereby increasing the heat insulation effect.
[0047] Furthermore, the body 1 is made of titanium alloy material, specifically TC4 titanium alloy, the material composition is Ti-6Al-4V, which belongs to the (α+β) type titanium alloy and has good comprehensive mechanical properties.
[0048] TC4 titanium alloy has a series of advantages such as excellent corrosion resistance, low density, high specific strength, good toughness and weldability. It has been successfully used in aerospace, petrochemical, shipbuilding, automobile, medicine and other departments.
[0049] It should be noted that the material of titanium alloy is used. After experimental comparison, under the same test environment and the same test time, the deformation of the traditional nozzle 6 cap is 0.2%; the deformation of the 3D printed nozzle 6 cap is 0.1%, which is doubled.
[0050] Furthermore, the main body 1 uses a 3D printing process, and the heat insulation effect is improved compared with the traditional TC4 material nozzle 6 cap; after experimental comparison, under the same test environment, the heat dissipation rate of the traditional TC4 is 35%, and the heat dissipation rate of the 3D printed one is 18%.
[0051] Example 2
[0052] like Figure 3 As shown, a hot runner device includes the nozzle 6 cap described in Example 1, and also includes a diverter plate 7 and a nozzle 6; the nozzle 6 is arranged on one side of the diverter plate 7.
[0053] like Figure 4 As shown, the nozzle 6 is sealedly connected to the diverter plate 7 through the body 1 .
[0054] It should be noted that the nozzle 6 is fixed on the manifold plate 7, and the molten plastic is suitable for entering the manifold plate 7 through the nozzle.
[0055] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.
Claims
1. A nozzle cap, characterized in that: include: A body (1) having an installation space (5) therein; the installation space (5) is suitable for accommodating a nozzle (6); one end of the body (1) is suitable for abutting against the nozzle (6), and the other end is suitable for abutting against a diverter plate (7); The body (1) comprises a first end face (2), a second end face (3) and a plurality of lattice structures (4); the first end face (2) and the second end face (3) are parallel and spaced apart, the plurality of lattice structures (4) connect and support the first end face (2) and the second end face (3), and a hollow cavity is formed between adjacent lattice structures (4).
2. The nozzle cap according to claim 1, characterized in that: The lattice structure (4) comprises at least two support rod portions, the two ends of the support rod portions are respectively connected to the first end surface (2) and the second end surface (3), and at least a portion of the middle portion of the support rod portions intersects to form a unit cell portion.
3. The nozzle cap according to claim 2, characterized in that: The first end surface (2) is suitable for abutting against one end of the nozzle (6) to form an abutment portion, and the top of the abutment portion abuts against the nozzle (6); the side wall of the abutment portion has a protrusion, and the protrusion is suitable for abutting against the nozzle (6).
4. The nozzle cap according to claim 3, characterized in that: The installation space (5) comprises a first installation space (51) and a second installation space (52); the first installation space (51) is close to the nozzle (6); and the second installation space (52) is close to the diverter plate (7).
5. The nozzle cap according to claim 4, characterized in that: The cross-sectional area of the first installation space (51) gradually increases towards the nozzle (6).
6. The nozzle cap according to claim 1, characterized in that: The body (1) is made of titanium alloy material.
7. The nozzle cap according to claim 1, characterized in that: The body (1) is made using a 3D printing process.
8. A hot runner device, characterized in that: A nozzle (6) cap comprising any one of claims 1-7.
9. A hot runner device according to claim 8, characterized in that: Also includes: Diverter plate (7); The nozzle (6) is arranged on one side of the diverter plate (7).
10. A hot runner device according to claim 9, characterized in that: The nozzle (6) is sealedly connected to the diverter plate (7) through the body (1).