Conformal waterway based on 3D printing and mold

Abstract

The utility model belongs to the technical field of mold parts, and particularly relates to a shape follow-up waterway based on 3D printing and a mold, the shape follow-up waterway comprises a follow-up waterway body, the follow-up waterway body comprises a water inlet channel and a water outlet channel, and a plurality of convex hull parts used for changing the flowing direction of the waterway are arranged in the water inlet channel. By arranging the convex hull part, the flowing direction of a waterway can be changed when the waterway enters the channel, so that the waterway is in turbulent flow in a turbulent flow state, the flow velocity is uniformly distributed along the section vertical to the flowing direction, and the flow velocity is not greatly different from the flow velocity close to the pipe wall in the center of the pipeline, so that the heat of the insert can be more effectively taken away; and water impurities in the flow channel can be taken away, and the cooling efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of die parts, and particularly relates to a conformal water channel and a die based on 3D printing. Background Art

[0002] Since the traditional processing technology cannot machine a conformal water channel, the whole insert can only be printed by 3D printing technology. Since the conformal water channel is formed by 3D printing, the surface of its pipeline is relatively rough and prone to blockage, and the pipeline of the conformal water channel needs to be polished to a smooth surface by fluid polishing.

[0003] The conformal water channels can be evenly arranged along the shape of the product, the cooling efficiency is significantly improved, the temperature inside the part is more uniform, and the defects inside the part can be greatly reduced, thereby improving the quality and performance of the product. Due to the narrow channels of the insert, the space for the water-shaped water flow is limited, the cross-sectional area is only 2x4mm, the mold temperature controller can only provide a pressure of 6 bar, there are 8 cavities in one mold of this die, a total of 8 groups of water channels, the average water flow of each group of water channels is about 2L / min, and the Reynolds number is between 2500 and 3000, which is in a transitional state, the heat removal efficiency is low, and due to the narrow channels, water impurities are likely to remain and cause channel blockage.

[0004] In view of this, it is particularly important to design and manufacture a conformal water channel and a die based on 3D printing that can overcome the above problems. Summary of the Utility Model

[0005] Aiming at the technical problem of insufficient cooling efficiency existing in the conformal water channels in the prior art, the utility model provides a conformal water channel and a die based on 3D printing.

[0006] In a first aspect, the utility model provides a conformal water channel based on 3D printing, including a conformal water channel body, the conformal water channel body includes an inlet channel and an outlet channel, and a plurality of convex portions for changing the water flow direction are arranged in the inlet channel. By arranging the convex portions, the water flow direction can be changed when the water enters the channel, so that the water is in a turbulent flow state, and the velocity distribution along the cross-section perpendicular to the flow direction is uniformly distributed. At the center of the pipeline, the velocity is not much different from the velocity near the pipe wall. It can not only more effectively remove the heat of the insert, but also remove the water impurities in the flow channel, and the cooling efficiency is significantly improved.

[0007] Preferably, it further includes cavities respectively communicated with the inlet channel and the outlet channel, a plurality of the convex portions are arranged on the inner wall of the inlet channel, and a plurality of the convex portions are located in the position interval from the inlet channel to the cavities.

[0008] Preferably, the diameter range of the convex portions is 0.8 - 1.2 mm.

[0009] Further preferably, the diameter of the convex hull part is set to 1 mm.

[0010] Preferably, the height range of the convex hull part is 0.2 - 0.4 mm.

[0011] Further preferably, the height of the convex hull part is set to 0.3 mm.

[0012] Preferably, several convex hull parts are regularly arranged in the water inlet channel.

[0013] Preferably, the number of several convex hull parts is set to at least six.

[0014] Further preferably, the number of the convex hull parts is set to six.

[0015] In a second aspect, the present utility model further provides a mold with a conformal water channel based on 3D printing, including the conformal water channel based on 3D printing as described in the first aspect, and further including a mold body. The conformal water channel body is arranged inside the mold body, or the conformal water channel body is arranged outside the mold body, and the conformal water channel body is in internal communication with the mold body.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] (1) By adopting a convex hull structure with a diameter of 1 mm and a height of 0.3 mm in the section from the water inlet channel to the cavity entry position, the flow direction of the water channel is changed when the water enters the channel, so that the Reynolds number is increased to more than 4000, and the water channel is in a turbulent state. In the turbulent flow, the velocity distribution along the cross-section perpendicular to the flow direction is evenly distributed, and the velocity at the center of the pipe is not much different from the velocity near the pipe wall. This can not only more effectively take away the heat of the insert, but also take away the water impurities in the runner.

[0018] (2) After adopting this conformal water channel, the cooling period of the internal temperature of the part is reduced from 13.2 s to 8.9 s, a decrease of 32.6%, and the maximum value of the concave deformation at the mouth is reduced from 0.55 mm to 0.328 mm, a decrease of 0.22 mm. Description of the Drawings

[0019] The drawings are included to provide a further understanding of the embodiments and the drawings are incorporated into and constitute a part of this specification. The drawings illustrate the embodiments and are used in conjunction with the description to explain the principles of the present utility model. Other embodiments and many of the expected advantages of the embodiments will be readily appreciated as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale with each other. The same reference numerals refer to corresponding similar components.

[0020] Figure 1Shows a schematic cross-sectional view of a conformal water channel based on 3D printing according to an embodiment of the present invention;

[0021] Figure 2 Shows a schematic diagram of the change in the flow direction of water when it passes through the convex part in a conformal water channel based on 3D printing according to a specific embodiment of the present invention;

[0022] Figure 3 Shows a schematic diagram of the water flow in a conformal water channel based on 3D printing according to an embodiment of the present invention when the water flow is in a turbulent state;

[0023] Figure 4 is Figure 1 An enlarged structural schematic diagram of part A in

[0024] The meanings of the numbers in the figure: 1, the main body of the conformal water channel; 2, the water inlet channel; 3, the water outlet channel; 4, the convex part; 5, the cavity; 6, the main body of the mold. Specific embodiments

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. In addition, it should be noted that, for the sake of convenience of description, only the parts related to the relevant invention are shown in the drawings.

[0026] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0027] In the first aspect, the present invention proposes a conformal water channel based on 3D printing, Figure 1 Shows a schematic cross-sectional view of a conformal water channel based on 3D printing according to an embodiment of the present invention, as Figure 1 shown, the conformal water channel based on 3D printing includes a main body 1 of the conformal water channel, the main body 1 of the conformal water channel includes a water inlet channel 2 and a water outlet channel 3, and a plurality of convex parts 4 for changing the water flow direction are arranged in the water inlet channel 2.

[0028] As Figure 2 shown, by setting the convex part 4, the water flow direction can be changed when the water enters the channel, so that the water flow is in a turbulent state, and the velocity distribution along the cross-section perpendicular to the flow direction is uniformly distributed. In the center of the pipeline, the velocity is not much different from the velocity near the pipe wall. It can not only more effectively take away the heat of the insert, but also take away the water impurities in the flow channel, and the cooling efficiency is significantly improved.

[0029] It should be noted that, as Figure 3As shown, when the water flow is in a transitional state, the Reynolds number is 2300 - 4000; when the water flow is in a turbulent state, the Reynolds number is greater than 4000.

[0030] Specifically, as Figure 1 and 4 shown, it further includes a cavity 5 respectively communicating with the water inlet channel 2 and the water outlet channel 3. A number of convex portions 4 protrude from the inner wall of the water inlet channel 2, and the number of convex portions 4 is located in the position interval from the water inlet channel 2 to the cavity 5. Among them, the diameter range of the convex portion 4 is 0.8 - 1.2 mm, and the height range of the convex portion 4 is 0.2 - 0.4 mm. A number of convex portions 4 are regularly arranged in the water inlet channel 2, and the number of convex portions 4 is set to at least six.

[0031] In this embodiment, the diameter of the convex portion 4 is set to 1 mm, the height of the convex portion 4 is set to 0.3 mm, and the number of convex portions 4 is set to six. The convex portion 4 and the water inlet channel 2 are integrally formed.

[0032] In other embodiments, the shape and size of the convex portion 4 can be adaptively designed according to needs. For example, the top end of the convex portion 4 can be designed with a chamfer, or convex points can be provided on the circumferential side wall of the convex portion 4, etc. No specific limitation is made here.

[0033] The technical solution of the present utility model adopts a convex structure with a diameter of 1 mm and a height of 0.3 mm in the position interval from the water inlet channel 2 to the cavity 5, so that the water flow changes its direction when entering the channel, thereby increasing the Reynolds number to more than 4000. The water flow is in a turbulent state, and the velocity distribution along the cross-section perpendicular to the flow direction in the turbulence is uniformly distributed. The velocity at the center of the pipeline is not much different from the velocity near the pipe wall. It can not only more effectively take away the heat of the insert, but also take away the water impurities in the flow channel.

[0034] By adopting this conformal water channel, the cooling period of the internal temperature of the part is reduced from 13.2 s to 8.9 s, a decrease of 32.6%, and the maximum value of the inner concave deformation at the mouth is reduced from 0.55 mm to 0.328 mm, a decrease of 0.22 mm.

[0035] In the second aspect, the present utility model also proposes a mold with a conformal water channel based on 3D printing, including the conformal water channel based on 3D printing as described in the first aspect. As Figure 1 shown, it further includes a mold body 6. The conformal water channel body 1 is arranged inside the mold body 6, or the conformal water channel body 1 is arranged outside the mold body 6, and the conformal water channel body 1 communicates with the inside of the mold body 6.

[0036] In a specific embodiment, the follow - along water channel body 1 is arranged outside the mold body 6, and the follow - along water channel body 1 is internally connected to the mold body 6. The cross - sections of the follow - along water channel body 1 and the cavity 5 inside the mold body 6 are circular.

[0037] The specific implementation manners of the present utility model have been described above. However, the protection scope of the present utility model is not limited thereto. Any person skilled in the art in the technical field disclosed by the present utility model can easily think of changes or substitutions within the technical scope disclosed by the present utility model, and all of them should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The term 'comprising' does not exclude the presence of elements or steps not listed in the claims. The article 'a' or 'an' preceding an element does not exclude the presence of a plurality of such elements. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to improve. Any reference signs in the claims should not be construed as limiting the scope.

Claims

1. A 3D-printed conformable waterway, comprising a conformable waterway body, characterized in that: The accompanying waterway body comprises a water inlet channel and a water outlet channel, and the water inlet channel is provided with a plurality of convex hull parts for changing the flow direction of the waterway; It also includes a cavity connected to the water inlet channel and the water outlet channel respectively, and a plurality of the convex hulls are arranged on the inner wall of the water inlet channel, and a plurality of the convex hulls are located in the position interval from the water inlet channel to the cavity.

2. The conformal waterway based on 3D printing according to claim 1, characterized in that: The diameter of the convex portion ranges from 0.8 to 1.2 mm.

3. The conformal waterway based on 3D printing according to claim 2, characterized in that: The diameter of the convex portion is set to 1 mm.

4. The conformal waterway based on 3D printing according to claim 1, characterized in that: The height of the convex portion ranges from 0.2 to 0.4 mm.

5. The conformal waterway based on 3D printing according to claim 4, characterized in that: The height of the convex portion is set to 0.3 mm.

6. The conformal waterway based on 3D printing according to claim 1, characterized in that: A plurality of the convex hull portions are regularly arranged in the water inlet channel.

7. The conformal waterway based on 3D printing according to claim 1, characterized in that: The number of the plurality of convex hull portions is set to at least six.

8. The conformal waterway based on 3D printing according to claim 1, characterized in that: The number of the convex hull portions is set to six.

9. A mold for a conformal waterway based on 3D printing, comprising the conformal waterway based on 3D printing as claimed in any one of claims 1 to 8, characterized in that: It also includes a mold body, the accompanying water channel body is arranged in the mold body, or the accompanying water channel body is arranged outside the mold body, and the accompanying water channel body is communicated with the inside of the mold body.

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