A directional cooling device for injection nozzles in high mold temperature injection molds

Abstract

This utility model relates to the technical field of high mold temperature injection molding equipment. It discloses a directional cooling device for a nozzle in a high mold temperature injection mold, comprising: a front mold core with a cooling mounting hole and a cooling water channel connected to the mounting hole; a water-cooling sleeve inserted into the mounting hole, with a water groove on its outer wall connecting the inlet and outlet water outlets; and a mounting channel formed by the inner wall of the water-cooling sleeve for the nozzle to pass through; and a sealing cap located at the inlet end of the mounting hole to limit the water-cooling sleeve within the hole. Cooling water is supplied to the cooling water channel of the front mold core, entering the cooling water channel and water groove to carry away heat from the nozzle, thus cooling it. The sealing cap ensures the water-cooling sleeve is held in place, providing good fixation and sealing.

Description

Technical Field

[0001] This utility model relates to the technical field of high mold temperature injection molding equipment, and in particular to a nozzle directional cooling device for high mold temperature injection molds. Background Technology

[0002] When high-temperature injection molding is required, if the front mold temperature reaches 120℃, the temperature at the center of the injection nozzle is 20-30℃ higher than the temperature around the mold cavity due to the continuous heating from the injection molding machine nozzle. This makes it difficult for the material at the nozzle to cool down, forcing a longer cooling time. This directly results in a persistently long cycle time, tens of seconds longer than normal production time, and frequent nozzle material breakage issues. Therefore, a heat dissipation cooling structure is needed to cool the nozzle. However, existing heat dissipation structures for high-temperature injection molds have poor sealing performance. Utility Model Content

[0003] The present invention aims to improve at least one technical problem in the prior art.

[0004] This invention provides a directional cooling device for injection nozzles in high-temperature injection molds, which can cool and reduce the temperature of the nozzles and has good sealing performance.

[0005] This utility model provides a nozzle directional cooling device for high mold temperature injection molds, comprising: A front mold core, wherein a cooling mounting hole is provided on the front mold core, and a cooling water channel is provided inside the front mold core, wherein the cooling water channel is connected to the cooling mounting hole, such that the inner wall of the cooling mounting hole forms a water inlet hole and a water outlet hole; A water-carrying sleeve is inserted into the cooling mounting hole, the water-carrying sleeve covers the water inlet and the water outlet, the outer wall of the water-carrying sleeve has a water groove, so that the water inlet and the water outlet are connected through the water groove, and the mounting channel formed by the inner wall of the water-carrying sleeve is used for the nozzle to pass through. And a sealing cap, which is connected to the front mold core, and the sealing cap is located at the inlet end of the mounting hole to limit the water jacket in the mounting hole.

[0006] As a further improvement to the above technical solution, the cooling water circuit includes an inlet channel and an outlet channel formed in the front mold core. The inlet channel is connected to the inlet hole, and the inlet of the inlet channel is located on the surface of the front mold core where the inlet end of the mounting hole is located. The outlet channel is connected to the outlet hole, and the outlet of the outlet channel is located on the surface of the front mold core where the inlet end of the mounting hole is located.

[0007] As a further improvement to the above technical solution, the nozzle directional cooling device for high mold temperature injection molds also includes a first sealing ring. The water jacket has a first sealing groove at the outlet end facing away from the mounting hole. The first sealing ring is disposed in the first sealing groove and is used to separate the water tank and the mounting channel.

[0008] As a further improvement to the above technical solution, the mounting hole is provided with an internal thread, and the sealing cover is provided with an external thread, the internal thread and the external thread being connected in a mating manner.

[0009] As a further improvement to the above technical solution, a flange extends from the water jacket, and a step is provided on the inner wall of the mounting hole, with the flange and the step abutting against each other.

[0010] As a further improvement to the above technical solution, a second sealing groove is provided on the surface of the flange facing the step. The nozzle directional cooling device for high mold temperature injection molds also includes a second sealing ring, which is disposed in the second sealing groove and is used to separate the water tank and the inlet end of the mounting hole.

[0011] As a further improvement to the above technical solution, the outer wall of the water jacket is provided with a third sealing groove, which is located between the first sealing groove and the water tank. The nozzle directional cooling device for high mold temperature injection molds also includes a third sealing ring, which is disposed in the third sealing groove and is used to separate the water tank and the installation channel.

[0012] As a further improvement to the above technical solution, the bottom surface of the mounting hole is provided with a fourth sealing groove, the first sealing groove and the fourth sealing groove form a fifth sealing groove, and the first sealing ring is disposed in the fifth sealing groove.

[0013] As a further improvement to the above technical solution, the water jacket is made of beryllium copper.

[0014] This technical solution has at least the following beneficial effects: In the nozzle directional cooling device used for high mold temperature injection molds, the water jacket is installed in the cooling mounting hole, and the nozzle passes through the mounting channel installed in the water jacket. The cooling water passage of the front mold core is connected to the water tank of the water jacket. Cooling water is passed through the cooling water passage of the front mold core, and the cooling water enters the cooling water passage and water tank to carry away the heat of the nozzle, thereby cooling the nozzle. By setting a sealing cap, the water jacket can be pressed down, which can achieve a good fixing and sealing effect. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of an embodiment of the directional cooling device for injection molds at high mold temperatures according to this utility model; Figure 2 This is an isometric view of an embodiment of the water jacket of this utility model; Figure 3 This is a schematic diagram of an embodiment of the directional cooling device for injection mold nozzles in high mold temperature injection molds according to this utility model.

[0016] In the attached diagram: 1-Water jacket; 11-First sealing groove; 12-Second sealing groove; 13-Third sealing groove; 14-Fifth sealing groove; 15-Installation channel; 16-Water tank; 2-Front mold core; 21-Cooling water channel; 3-Sealing cover; 4-Pump nozzle. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] The following is combined with Figures 1 to 3 The embodiments of this utility model are described below.

[0019] This embodiment relates to a nozzle directional cooling device for high mold temperature injection molds.

[0020] Reference Figure 1 and Figure 2 A directional cooling device for a nozzle in a high-temperature injection mold includes: a front mold core 2, which has a cooling mounting hole and a cooling water passage 21 connected to the cooling mounting hole, such that the inner wall of the cooling mounting hole forms an inlet and an outlet; a water-cooling sleeve 1, which is inserted into the cooling mounting hole and blocks the inlet and outlet, and has a water groove 16 on its outer wall, such that the inlet and outlet are connected through the water groove 16, and the inner wall of the water-cooling sleeve 1 forms an installation channel 15 for the nozzle 4 to pass through; and a sealing cover 3, which is connected to the front mold core 2 and is located at the inlet end of the mounting hole to limit the water-cooling sleeve 1 in the mounting hole.

[0021] The water jacket 1 is installed in the cooling mounting hole. The nozzle 4 passes through the mounting channel 15 of the water jacket 1. The cooling water passage 21 of the front mold core 2 is connected to the water tank 16 of the water jacket 1. Cooling water is supplied to the cooling water passage 21 of the front mold core 2. The cooling water enters the cooling water passage 21 and the water tank 16, carrying away the heat of the nozzle 4 and cooling it. The sealing cover 3 ensures that the water jacket 1 is pressed down, achieving a good fixing and sealing effect. The sealing cover 3 and the front mold core 2 can be connected by snap-fit, threaded connection, or clamping.

[0022] Reference Figure 1 In some embodiments, the cooling water passage 21 includes an inlet channel and an outlet channel formed within the front mold core 2. The inlet channel is connected to the inlet hole, with its inlet located on the surface of the front mold core 2 where the mounting hole inlet is located. The outlet channel is connected to the outlet hole, and its outlet is located on the surface of the front mold core 2 where the mounting hole inlet is located. Positioning the inlet of the inlet channel and the outlet of the outlet channel on the surface of the front mold core 2 where the mounting hole inlet is located facilitates the structural design of the front mold core 2 and the connection between the cooling water passage 21 and external cooling water pipes, thus simplifying installation.

[0023] Reference Figure 1 and Figure 2 In some embodiments, the directional cooling device for the nozzle of a high-temperature injection mold further includes a first sealing ring. A first sealing groove 11 is provided at the outlet end of the water jacket 1 facing away from the mounting hole, and the first sealing ring is disposed in the first sealing groove 11. The first sealing ring separates the water tank 16 and the mounting channel 15. By setting the first sealing groove 11 and installing the first sealing ring, the water tank 16 and the mounting channel 15 are separated, which helps prevent water leakage from the directional cooling device for the nozzle of a high-temperature injection mold and improves the sealing performance.

[0024] In some embodiments, the mounting hole has an internal thread, and the sealing cap 3 has an external thread, with the internal thread and the external thread engaging. The sealing cap 3 is connected to the mounting hole via the threaded engagement, making the sealing cap 3 more securely fixed.

[0025] Reference Figure 1 In some embodiments, a flange extends from the water-carrying sleeve 1, and a step is provided on the inner wall of the mounting hole, with the flange and the step abutting against each other. By providing an extended flange on the water-carrying sleeve 1 and a step on the inner wall of the mounting hole, the two work together to facilitate the positioning of the water-carrying sleeve 1 and make the installation of the water-carrying sleeve 1 more stable.

[0026] Reference Figure 1 and Figure 2In some embodiments, a second sealing groove 12 is provided on the surface of the flange facing the step. The nozzle directional cooling device for high mold temperature injection molds also includes a second sealing ring, which is disposed in the second sealing groove 12. The second sealing ring is used to separate the water tank 16 and the inlet end of the mounting hole. By providing the second sealing groove 12 and installing the second sealing ring, the sealing effect is improved, preventing cooling water from leaking out from the surface of the front mold core 2 where the inlet end of the mounting hole is located.

[0027] Reference Figure 3 In some embodiments, the outer wall of the water jacket 1 is provided with a third sealing groove 13, which is located between the first sealing groove 11 and the water tank 16. The nozzle directional cooling device for high mold temperature injection molds also includes a third sealing ring, which is disposed in the third sealing groove 13 and serves to separate the water tank 16 and the installation channel 15. By setting the third sealing groove 13 and installing the third sealing ring, the precision requirements of the water jacket 1 structure are reduced, which is beneficial to improving adaptability. Based on the cooperation of the second sealing ring and the first sealing ring, a good sealing effect can be achieved, thus improving the sealing performance.

[0028] Reference Figure 3 In some embodiments, the bottom surface of the mounting hole is provided with a fourth sealing groove, and the first sealing groove 11 and the fourth sealing groove form a fifth sealing groove 14, in which the first sealing ring is disposed. By providing a fourth sealing groove on the bottom surface of the mounting hole, the sealing ring is located in the fifth sealing groove 14 formed by the first sealing groove 11 and the fourth sealing groove, which reduces the precision requirements of the water jacket 1 structure, improves adaptability, and achieves a good sealing effect.

[0029] In some embodiments, the water jacket 1 is made of beryllium copper. Beryllium copper is chosen because of its good thermal conductivity, which enables efficient heat dissipation and cooling of the nozzle 4.

[0030] The preferred embodiments of the present invention have been described in detail above, but the present disclosure is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present disclosure.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

Claims

1. A nozzle directional cooling device for a high mold temperature injection mold, characterized by, include: The front mold core (2) is provided with a cooling mounting hole and a cooling water channel (21) is provided inside the front mold core (2). The cooling water channel (21) is connected to the cooling mounting hole, so that the inner wall of the cooling mounting hole forms a water inlet and a water outlet. Water jacket (1), the water jacket (1) is inserted into the cooling mounting hole, the water jacket (1) covers the water inlet and the water outlet, the outer wall of the water jacket (1) is provided with a water groove (16) so that the water inlet and the water outlet are connected through the water groove (16), and the mounting channel (15) formed by the inner wall of the water jacket (1) is used for the nozzle (4) to pass through; And a sealing cap (3), which is connected to the front mold core (2). The sealing cap (3) is located at the inlet end of the mounting hole to limit the water jacket (1) in the mounting hole.

2. The nozzle directional cooling device for a high mold temperature injection mold according to claim 1, characterized by, The cooling water channel (21) includes an inlet channel and an outlet channel opened in the front mold core (2). The inlet channel is connected to the inlet hole. The inlet of the inlet channel is located on the surface of the front mold core (2) where the inlet end of the mounting hole is located. The outlet channel is connected to the outlet hole. The outlet of the outlet channel is located on the surface of the front mold core (2) where the inlet end of the mounting hole is located.

3. The nozzle directional cooling device for a high mold temperature injection mold of claim 1, wherein, The nozzle directional cooling device for high mold temperature injection molds also includes a first sealing ring. The water jacket (1) has a first sealing groove (11) at the outlet end facing away from the mounting hole. The first sealing ring is located in the first sealing groove (11) and is used to separate the water tank (16) and the mounting channel (15).

4. The nozzle directional cooling device for a high mold temperature injection mold of claim 1, wherein, The mounting hole has an internal thread, and the sealing cap (3) has an external thread. The internal thread and the external thread are connected in a mating manner.

5. The nozzle directional cooling device for a high mold temperature injection mold of claim 1, wherein, A flange extends from the water jacket (1), and a step is provided on the inner wall of the mounting hole, with the flange and the step abutting against each other.

6. The nozzle directional cooling device for a high mold temperature injection mold of claim 5, wherein, The flange is provided with a second sealing groove (12) on the surface facing the step. The nozzle directional cooling device for high mold temperature injection mold also includes a second sealing ring. The second sealing ring is provided in the second sealing groove (12) and is used to separate the water tank (16) and the inlet end of the mounting hole.

7. The nozzle directional cooling device for a high mold temperature injection mold of claim 3, wherein, The outer wall of the water jacket (1) is provided with a third sealing groove (13). The third sealing groove (13) is located between the first sealing groove (11) and the water tank (16). The nozzle directional cooling device for high mold temperature injection mold also includes a third sealing ring. The third sealing ring is located in the third sealing groove (13). The third sealing ring is used to separate the water tank (16) and the installation channel (15).

8. The nozzle directional cooling device for a high mold temperature injection mold of claim 3, wherein, The bottom surface of the mounting hole is provided with a fourth sealing groove, and the first sealing groove (11) and the fourth sealing groove form a fifth sealing groove (14), and the first sealing ring is provided in the fifth sealing groove (14).

9. The nozzle directional cooling device for a high mold temperature injection mold of claim 1, wherein, The water jacket (1) is made of beryllium copper.

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