Cold nozzle structure capable of preventing injection molding solidification of liquid silica gel mold

Abstract

The utility model relates to the technical field of mold injection molding, and discloses a cold nozzle structure capable of preventing liquid silica gel mold injection molding solidification, which comprises a cold nozzle body, the top of the cold nozzle body is fixedly connected with a threaded pipe, the surface of the threaded pipe is fixedly connected with a limiting block, the upper end of the limiting block is provided with a sealing gasket, and the sealing gasket is fixedly connected with the threaded pipe. The top of the threaded pipe is fixedly connected with a fixing pipe, the surface of the fixing pipe is fixedly connected with cooling fins, a cooling pipeline is arranged at the upper end of the cold nozzle body, a first groove is formed in the bottom of the cooling pipeline, and the right end of the cooling pipeline communicates with a water inlet connector. Heat of the fixed pipe is absorbed through the radiating fins on the surface of the fixed pipe, cooling liquid enters the cooling pipeline through the water inlet pipe to cool the heat on the surfaces of the radiating fins, and the radiating fins are arranged, so that the heat is uniformly dissipated, the cooling effect is improved, the radiating efficiency of the fixed pipe is higher, and the service life of the radiator is prolonged. The silica gel is prevented from being cured too early in the injection molding process.

Description

Technical Field

[0001] The utility model relates to the technical field of mold injection molding, in particular to a cold nozzle structure that can prevent the injection and curing of liquid silicone molds. Background Technique

[0002] During the injection molding process, liquid silicone enters the cold nozzle structure through the liquid inlet, and then is cooled through the cooling channel. Due to the design of the cold nozzle body, the liquid silicone can maintain a low temperature when flowing through the cold nozzle, thus avoiding curing before reaching the mold. In this way, the silicone can maintain its fluidity and smoothly fill the shape of the mold, and then be heated and cured through the mold to form the final product.

[0003] In the prior art, air cooling or water cooling is usually used to cool the cold nozzle, and the effect is not ideal. Some cold nozzle structures are complex, and the installation and disassembly processes are cumbersome, making the replacement and maintenance processes complex and time-consuming, which brings inconvenience to the maintenance work. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a cold nozzle structure that can prevent the injection and curing of liquid silicone molds.

[0005] The utility model is realized by the following technical solutions: A cold nozzle structure that can prevent the injection and curing of liquid silicone molds, including a cold nozzle body. A threaded pipe is fixedly connected to the top of the cold nozzle body. A limiting block is fixedly connected to the surface of the threaded pipe. A sealing gasket is arranged at the upper end of the limiting block. A fixing pipe is fixedly connected to the top of the threaded pipe. Heat dissipation fins are fixedly connected to the surface of the fixing pipe. A cooling pipe is arranged at the upper end of the cold nozzle body. A first groove is opened at the bottom of the cooling pipe. A water inlet joint is communicated with the right end of the cooling pipe. A water outlet joint is communicated with the left end of the cooling pipe.

[0006] Through the above technical solutions, the heat of the fixing pipe is absorbed by the heat dissipation fins on the surface of the fixing pipe. The coolant enters the inside of the cooling pipe through the water inlet pipe to cool the heat on the surface of the heat dissipation fins. By arranging a plurality of heat dissipation fins, it helps to evenly dissipate heat and improve the cooling effect, making the heat dissipation efficiency of the fixing pipe faster.

[0007] As a further improvement of the above solution, the surface of the threaded pipe is threadedly connected to the inner wall of the cooling pipe, and the upper surface of the limiting block contacts the bottom of the cooling pipe.

[0008] Through the above technical solutions, the cold nozzle body can be quickly installed through the threaded pipe, and the position of the sealing gasket is limited by squeezing the sealing gasket through the limiting block.

[0009] As a further improvement of the above solution, the gasket is located inside the first groove, and the upper end of the fixed pipe extends to the outside of the cooling pipe.

[0010] Through the above technical solution, the sealing performance during the connection of the threaded pipe is improved by the gasket inside the first groove.

[0011] As a further improvement of the above solution, the heat sink is located inside the cooling pipe, the number of the heat sinks is set to be several, and a second groove is formed at the top of the cooling pipe.

[0012] Through the above technical solution, the heat sink is cooled by the coolant inside the cooling pipe.

[0013] As a further improvement of the above solution, a sealing ring is arranged inside the second groove, and the inner wall of the sealing ring is in contact with the surface of the fixed pipe.

[0014] Through the above technical solution, the inner wall of the sealing ring fits closely with the surface of the fixed pipe, thereby improving the sealing effect and preventing the coolant from leaking out.

[0015] As a further improvement of the above solution, a limiting plate is arranged at the upper end of the sealing ring, and a sealing cover is fixedly connected to the upper surface of the limiting plate.

[0016] Through the above technical solution, the sealing ring is extruded by the limiting plate, making the sealing ring fit more closely with the surface of the fixed pipe.

[0017] As a further improvement of the above solution, the inner wall of the sealing cover is threadedly connected to the surface of the cooling pipe, and the inner wall of the sealing cover is slidably connected to the surface of the fixed pipe.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] By providing a fixed pipe, a heat sink and a cooling pipe, specifically, the heat of the fixed pipe is absorbed by the heat sink on the surface of the fixed pipe, the coolant enters the inside of the cooling pipe through the water inlet pipe, and the heat on the surface of the heat sink is cooled. By providing several heat sinks, it helps to evenly dissipate heat, improve the cooling effect, make the heat dissipation efficiency of the fixed pipe faster, and prevent the silicone from curing prematurely during the injection molding process.

[0020] By providing a sealing cover and a threaded pipe, specifically, by rotating the sealing cover to remove it, and then rotating the cold nozzle body, the threaded pipe rotates inside the inner wall of the fixed pipe, and the cold nozzle body is removed, so as to facilitate subsequent maintenance and replacement of the cold nozzle body, or replacement of the cooling pipe, improving the convenience of subsequent maintenance. Brief Description of the Drawings

[0021] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 Schematic sectional view of the overall structure of the present utility model;

[0023] Figure 3 Schematic diagram of the connection structure of the fixed pipe of the present utility model;

[0024] Figure 4 Schematic diagram of the connection structure of the cooling pipeline of the present utility model;

[0025] Figure 5 Schematic diagram of the structure of the sealing cover of the present utility model;

[0026] Figure 6 Schematic top view of the overall structure of the present utility model.

[0027] Main symbol description:

[0028] 1. Cold nozzle body; 2. Threaded pipe; 3. Limiting block; 4. Sealing gasket; 5. Fixed pipe; 6. Heat sink; 7. Cooling pipeline; 8. First groove; 9. Water inlet joint; 10. Water outlet joint; 11. Sealing cover; 12. Limiting plate; 13. Sealing ring; 14. Second groove. Specific implementation manners

[0029] Next, in combination with the accompanying drawings and specific implementation manners, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0030] Embodiment:

[0031] Please refer to Figures 1-6, A cold nozzle structure for preventing the injection molding and curing of liquid silicone molds in this embodiment includes a cold nozzle body 1. A threaded pipe 2 is fixedly connected to the top of the cold nozzle body 1. A limiting block 3 is fixedly connected to the surface of the threaded pipe 2. A sealing gasket 4 is arranged at the upper end of the limiting block 3. A fixed pipe 5 is fixedly connected to the top of the threaded pipe 2. Heat dissipation fins 6 are fixedly connected to the surface of the fixed pipe 5. A cooling pipe 7 is arranged at the upper end of the cold nozzle body 1. A first groove 8 is opened at the bottom of the cooling pipe 7. A water inlet joint 9 is communicated with the right end of the cooling pipe 7. A water outlet joint 10 is communicated with the left end of the cooling pipe 7. Connect the top of the fixed pipe 5 to the injection molding pipe, and then connect the water inlet joint 9 and the water outlet joint 10 to the water inlet pipe and the water outlet pipe respectively. The silicone enters the inside of the fixed pipe 5 through the injection molding pipe. The heat of the fixed pipe 5 is absorbed by the heat dissipation fins 6 on the surface of the fixed pipe 5. The coolant enters the inside of the cooling pipe 7 through the water inlet pipe to cool the heat on the surface of the heat dissipation fins 6. By arranging a plurality of heat dissipation fins 6, it helps to evenly dissipate heat, improve the cooling effect, make the heat dissipation efficiency of the fixed pipe 5 faster, and prevent the silicone from curing prematurely during the injection molding process.

[0032] The surface of the threaded pipe 2 is threadedly connected to the inner wall of the cooling pipe 7, and the upper surface of the limiting block 3 contacts the bottom of the cooling pipe 7.

[0033] The sealing gasket 4 is located inside the first groove 8, and the upper end of the fixed pipe 5 extends to the outside of the cooling pipe 7.

[0034] The heat dissipation fins 6 are located inside the cooling pipe 7. The number of the heat dissipation fins 6 is set to be several. A second groove 14 is opened at the top of the cooling pipe 7.

[0035] A sealing ring 13 is arranged inside the second groove 14, and the inner wall of the sealing ring 13 contacts the surface of the fixed pipe 5.

[0036] A limiting plate 12 is arranged at the upper end of the sealing ring 13. A sealing cover 11 is fixedly connected to the upper surface of the limiting plate 12. By rotating the sealing cover 11, removing the sealing cover 11, and then rotating the cold nozzle body 1, the threaded pipe 2 rotates on the inner wall of the fixed pipe 5, and the cold nozzle body 1 is removed, so as to facilitate subsequent maintenance and replacement of the cold nozzle body 1, or replacement of the cooling pipe 7, and improve the convenience of subsequent maintenance.

[0037] The inner wall of the sealing cover 11 is threadedly connected to the surface of the cooling pipe 7, and the inner wall of the sealing cover 11 is slidably connected to the surface of the fixed pipe 5.

[0038] The implementation principle of a cold nozzle structure capable of preventing the injection molding and curing of liquid silicone molds in the embodiments of the present application is as follows: During use, the top of the fixed pipe 5 is connected to the injection molding pipeline, and then the water inlet joint 9 and the water outlet joint 10 are respectively connected to the water inlet pipe and the water outlet pipe. The silicone enters the interior of the fixed pipe 5 through the injection molding pipeline. The heat of the fixed pipe 5 is absorbed by the heat sinks 6 on the surface of the fixed pipe 5. The coolant enters the interior of the cooling pipeline 7 through the water inlet pipe to cool the heat on the surface of the heat sinks 6. By providing a plurality of heat sinks 6, it helps to evenly dissipate the heat, improve the cooling effect, make the heat dissipation efficiency of the fixed pipe 5 faster, and prevent the silicone from prematurely curing during the injection molding process. The coolant is discharged through the water outlet pipe. When it is necessary to disassemble the cold nozzle body 1 subsequently, by rotating the sealing cover 11, the sealing cover 11 is removed, and then the cold nozzle body 1 is rotated so that the threaded pipe 2 rotates on the inner wall of the fixed pipe 5, and the cold nozzle body 1 is removed, thereby facilitating subsequent maintenance and replacement of the cold nozzle body 1, or replacement of the cooling pipeline 7, and improving the convenience of subsequent maintenance.

[0039] The above-mentioned implementation manners are only the preferred implementation manners of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A cold nozzle structure capable of preventing liquid silicone mold from curing during injection molding, characterized in that: The invention comprises a cold nozzle body (1), the top of the cold nozzle body (1) is fixedly connected with a threaded tube (2), the surface of the threaded tube (2) is fixedly connected with a limit block (3), the upper end of the limit block (3) is provided with a sealing gasket (4), the top of the threaded tube (2) is fixedly connected with a fixed tube (5), the surface of the fixed tube (5) is fixedly connected with a heat sink (6), the upper end of the cold nozzle body (1) is provided with a cooling pipe (7), the bottom of the cooling pipe (7) is provided with a first groove (8), the right end of the cooling pipe (7) is connected with a water inlet joint (9), and the left end of the cooling pipe (7) is connected with a water outlet joint (10).

2. A cold nozzle structure capable of preventing liquid silicone mold from solidifying during injection molding as claimed in claim 1, characterized in that: The surface of the threaded tube (2) is threadedly connected to the inner wall of the cooling pipe (7), and the upper surface of the limit block (3) is in contact with the bottom of the cooling pipe (7).

3. A cold nozzle structure capable of preventing liquid silicone mold from curing during injection molding as claimed in claim 1, characterized in that: The sealing gasket (4) is located inside the first groove (8), and the upper end of the fixing pipe (5) extends to the outside of the cooling pipe (7).

4. A cold nozzle structure capable of preventing liquid silicone mold from solidifying during injection molding as claimed in claim 1, characterized in that: The heat sink (6) is located inside the cooling pipe (7), the number of the heat sink (6) is set to be a plurality, and a second groove (14) is provided on the top of the cooling pipe (7).

5. A cold nozzle structure capable of preventing liquid silicone mold from solidifying during injection molding as claimed in claim 4, characterized in that: A sealing ring (13) is arranged inside the second groove (14), and the inner wall of the sealing ring (13) is in contact with the surface of the fixed pipe (5).

6. A cold nozzle structure capable of preventing liquid silicone mold from solidifying during injection molding as claimed in claim 5, characterized in that: A limiting plate (12) is provided at the upper end of the sealing ring (13), and a sealing cover (11) is fixedly connected to the upper surface of the limiting plate (12).

7. A cold nozzle structure capable of preventing liquid silicone mold from solidifying during injection molding as claimed in claim 6, characterized in that: The inner wall of the sealing cover (11) is threadedly connected to the surface of the cooling pipe (7), and the inner wall of the sealing cover (11) is slidably connected to the surface of the fixing pipe (5).

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