A cooling structure for hot runner cylinder side cooling

Abstract

The utility model discloses a cooling structure for hot runner air cylinder side cooling, air cylinder pass through cooling water board and fix on first shunt plate, second shunt plate is close to the side of air cylinder setting, cooling structure solid set on the side of air cylinder towards second shunt plate and including the plate body that has cooling water path for cooling medium circulating flow in and the fixed component that the plate body and the side of air cylinder are bonded fixed. Can isolate the heat source radiation of shunt plate of air cylinder side, avoid air cylinder temperature too high, prolong the service life of air cylinder, reduce the shutdown risk, simple structure, easy to install, and the cooling effect is good, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of hot runner cylinder cooling technology, specifically to a cooling structure for side cooling of a hot runner cylinder. Background Technology

[0002] In high-speed, high-temperature injection molding, the cylinder unit of the hot runner system operates in a high-temperature environment. While a cooling water plate is installed between the heated manifold and the cylinder body for insulation, in a multi-layered manifold system, the cylinder side may also be close to the heated manifold, causing the cylinder body temperature to exceed its normal operating temperature. This leads to accelerated aging and eventual failure of the cylinder seals, preventing the cylinder from functioning properly and causing production stoppages. The side cooling water plate, as a targeted heat dissipation device, effectively creates a localized temperature control environment in the cylinder area through directional heat conduction and convection heat transfer, playing an irreplaceable role in maintaining thermal balance and ensuring production stability. This invention addresses the problems existing in the prior art. Utility Model Content

[0003] To address one of the aforementioned technical problems, the purpose of this utility model is to provide a cooling structure for side cooling of hot runner cylinders, aiming to solve the problem that the cylinder body temperature of hot runner cylinders is too high due to proximity to a heat source (manifold), causing the inner sealing ring to fail and thus preventing the cylinder from working properly.

[0004] The technical solution of this utility model is:

[0005] The purpose of this utility model is to provide a cooling structure for side cooling of a hot runner cylinder. The cylinder is fixed to a first manifold plate by a cooling water plate, and a second manifold plate is disposed on the side of the cylinder close to the cylinder. The cooling structure is fixed on the side of the cylinder facing the second manifold plate and includes a plate having a cooling water passage for circulating cooling medium and a fixing assembly for attaching and fixing the plate to the side of the cylinder.

[0006] Preferably, the fixing component and the plate body form a quadrilateral structure with an accommodating space in the middle, and the cylinder is fixed in the accommodating space by the fixing component and the plate body.

[0007] Preferably, the fixing component includes a first fixing member and two second fixing members, the two second fixing members are arranged at intervals relative to each other and the first fixing member is arranged at intervals relative to each other with respect to the plate body, one end of each second fixing member is connected to the corresponding end of the first fixing member and the other end is connected to the corresponding end of the plate body.

[0008] Preferably, the first and second fasteners are an integral structure or a detachable structure.

[0009] Preferably, the first fastener is a sheet-like plate structure.

[0010] Preferably, any of the second fasteners is a bolt with a threaded structure at least at one end connected to the plate.

[0011] Preferably, any of the second fasteners is a bolt with threaded structures at both ends.

[0012] Preferably, the plate is provided with connecting water pipes for water inlet and outlet.

[0013] Preferably, the flatness of the surface of the plate that contacts at least the side of the cylinder is not greater than 0.02.

[0014] Preferably, the thermal conductivity of the plate is 150-180 W / (m·K); and / or the material of the plate is aluminum alloy.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] This utility model discloses a cooling structure for side cooling of a hot runner cylinder. It can isolate the heat source radiation of the manifold on the side of the cylinder, avoid the cylinder temperature from becoming too high, extend the service life of the cylinder, reduce the risk of downtime, and has a simple structure, is easy to install, has a good cooling effect, and is highly practical. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the cooling structure for side cooling of a hot runner cylinder and the structure of the cylinder and multi-layer manifold after assembly, according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the cooling structure according to an embodiment of the present invention.

[0020] Wherein: 10, cooling structure; 11, plate; 12, fixing component; 121, first fixing component; 122, second fixing component; 13, connecting water pipe; 20, cylinder; 30, first diverter plate; 40, second diverter plate; 50, cooling water plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0022] See Figures 1 to 2 This utility model discloses a cooling structure for side cooling of a hot runner cylinder, wherein the hot runner system has multiple layers of manifolds. Figure 1 In this embodiment, two flow dividers are used as an example. For ease of distinction, the two flow dividers are described as a first flow divider 30 and a second flow divider 40, respectively. Specifically, as shown... Figure 1 The cylinder 20 shown is fixed to the lower end of the first manifold 30, and the second manifold 40 is disposed on the side of the cylinder 20, specifically as shown in the figure. Figure 1 The second diverter plate 40 is located on the left rear side, close to the cylinder 20. A cooling water plate 50 containing cooling water is provided between the bottom surface of the cylinder 20 and the upper surface of the first diverter plate 30 for heat insulation. However, since the second diverter plate 40 is located close to the side of the cylinder 20, the side of the cylinder 20 in the prior art does not have a cooling structure 10. This situation will cause the temperature of the cylinder body of the cylinder 20 to exceed the normal operating temperature, causing the cylinder 20 seal ring to age faster and eventually fail, resulting in failure and production stoppage. In order to solve the above technical problems, this utility model also provides a cooling structure 10 on the side of the cylinder 20 close to the second diverter plate 40. The cooling structure 10 includes a plate 11 and a fixing component 12. The plate 11 is fixed to the side of the cylinder 20 close to the second diverter plate 40 by the fixing component 12. The plate 11 has a cooling water channel for the circulation of the cooling medium. The specific structure of the cooling water channel is not described or limited, such as conventional U-shaped, labyrinth-shaped, or curved types. The cooling medium is not described or limited; water can be used as it is low-cost and has good heat dissipation. A cooling structure 10 is provided on the side of the cylinder 20 near another manifold, namely the second manifold 40, to insulate against heat radiation and prevent the cylinder 20 from overheating. This maintains the thermal balance of the cylinder 20 and ensures it operates at its normal temperature. The high temperature generated by the second manifold 40 will prevent the cylinder 20 from exceeding its normal operating temperature, which could lead to accelerated aging of the seals and cylinder 20 failure. This extends the service life of the cylinder 20 and reduces the risk of downtime. The cooling structure 10 of this invention consists of only a plate 11 and a fixing component 12, making it simple in structure, easy to install, with good cooling effect and strong practicality.

[0023] To secure the plate 11 to the cylinder 20 using the fixing component 12, the fixing component 12 and the plate 11 form a quadrilateral structure in this embodiment of the invention. This quadrilateral structure has a central accommodating space that matches the shape of the cylinder 20. In other words, the cylinder 20 is fixed within this accommodating space by the fixing component 12 and the plate 11. In some preferred embodiments, specifically regarding the fixing component 12, such as... Figure 2As shown, the device includes a first fixing member 121 and two second fixing members 122. The two second fixing members 122 are arranged at intervals relative to each other, and the first fixing member 121 is arranged at intervals relative to each other. One end of each second fixing member 122 is connected to the corresponding end of the first fixing member 121, and the other end is connected to the corresponding end of the plate 11. In some preferred embodiments, the two second fixing members 122 and the first fixing member 121 are an integral structure, for example, welded together. As an alternative embodiment, the two second fixing members 122 and the first fixing member 121 are a detachable structure, for example, connected by threads. In the embodiments of this utility model, the first fixing member 121 and the two second fixing members 122 preferably adopt a detachable structure, specifically a threaded connection.

[0024] For the first fastener 121, as Figure 2 As shown, the preferred embodiment of this utility model is a sheet-like plate structure. An exemplary embodiment is a thin sheet structure whose thickness and width are both less than that of the plate 11. Specific materials, thickness, and width are not described or limited. For example, the first fixing member 121 is made of aluminum alloy, with a thickness one-twentieth of the thickness of the plate 11 and a width one-tenth of the width of the plate 11. This design avoids occupying mold space.

[0025] For the second fastener 122, as Figure 2 As shown, preferably, the rod is longer than the width of the cylinder 20. Optionally, the rod can be a connecting rod with a threaded connection at one end, or a connecting rod with threaded connections at both ends. Preferably, the second fixing member 122 is a conventional bolt with a threaded connection at one end or at both ends. This design offers wide versatility and can be applied to many types of cylinders 20.

[0026] For plate 11, such as Figure 2 As shown, the front side of the plate 11 is also provided with two connecting water pipes 13, which are connected to the internal cooling water channels and are used for water inlet and outlet to the cooling water channels, respectively. Correspondingly, two interfaces (not shown) are opened on the front side of the plate 11 for installing the connecting water pipes 13 respectively. The connecting water pipes 13 are sealed to the interfaces, for example by adding sealing rings. This ensures airtightness and can withstand the internal fluid pressure.

[0027] The material of plate 11 is not particularly limited, but is preferably the commercially available aluminum alloy 6061. For its thermal conductivity, a thermal conductivity of 150-180 W / (m·K) is preferred. It can be CNC machined. It has high heat dissipation efficiency and good cooling effect. Preferably, in this embodiment of the invention, at least the surface of plate 11 that contacts the side of cylinder 20 is a plane with a flatness of no more than 0.02, meaning the surface of plate 11 is flat, ensuring good contact between plate 11 and cylinder 20 and reducing contact thermal resistance. As for the other surface of plate 11, i.e., the surface facing the second diverter plate 40, exemplarily as shown... Figure 2 The diagram shows a Z-shaped structure.

[0028] The cooling structure 10 of this utility model embodiment is very suitable for hot runner systems with multi-layer manifold structure. On the one hand, it can isolate the heat source radiation of the manifold on the side of the cylinder 20, avoid the cylinder 20 from overheating and failing, thus preventing downtime and risk. On the other hand, it can also work with the cooling water plate 50 on the bottom of the cylinder 20 to increase the temperature regulation capability of the cylinder 20, ensure that the cylinder 20 is at a normal operating temperature, extend the service life of the cylinder 20, and reduce the risk of downtime.

[0029] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A cooling structure for side cooling of a hot runner cylinder, wherein the cylinder is fixed to a first manifold plate by a cooling water plate, and a second manifold plate is disposed on the side near the cylinder, characterized in that, The cooling structure is fixed on the side of the cylinder facing the second distributor plate and includes a plate having a cooling water passage for circulating cooling medium and a fixing assembly for attaching and fixing the plate to the side of the cylinder.

2. The cooling structure according to claim 1, characterized in that, The fixing component and the plate body form a quadrilateral structure with an accommodating space in the middle, and the cylinder is fixed in the accommodating space by the fixing component and the plate body.

3. The cooling structure according to claim 2, characterized in that, The fixing component includes a first fixing member and two second fixing members. The two second fixing members are arranged at a distance from each other, and the first fixing member is arranged at a distance from the plate. One end of each second fixing member is connected to the corresponding end of the first fixing member, and the other end is connected to the corresponding end of the plate.

4. The cooling structure according to claim 3, characterized in that, The first and second fasteners are either an integral structure or a detachable structure.

5. The cooling structure according to claim 3 or 4, characterized in that, The first fastener is a sheet-like plate structure.

6. The cooling structure according to claim 3 or 4, characterized in that, Any of the second fasteners is a bolt with a threaded structure at least at one end connected to the plate.

7. The cooling structure according to claim 6, characterized in that, Any of the second fasteners is a bolt with threaded structures at both ends.

8. The cooling structure according to claim 1, characterized in that, The plate is equipped with connecting water pipes for water inlet and outlet.

9. The cooling structure according to claim 1, characterized in that, The flatness of the surface of the plate that is in contact with at least the side of the cylinder is not greater than 0.

02.

10. The cooling structure according to claim 9, characterized in that, The thermal conductivity of the plate is 150-180 W / (m·K); and / or the material of the plate is aluminum alloy.

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