Injection mold

Abstract

The application discloses an injection mold. Two mold cores in the injection mold are arranged on two mold frames respectively. The two mold cores are arranged oppositely to form a molding chamber. A conformal water channel is formed between at least one mold core and the corresponding mold frame. The conformal water channel is arranged corresponding to the molding chamber. The conformal water channel continuously extends between the mold core and the mold frame. In the thickness direction of the mold core, the orthographic projection of the conformal water channel on the mold core covers the surface of the mold core used to form the molding chamber. The injection mold is arranged in a split mode of the mold frame and the mold core. The cooling water channel corresponding to the molding chamber can be arranged on the surface of the mold core according to the size and shape of the molding chamber. The manufacturing difficulty of the conformal water channel is reduced. Since the conformal water channel matches the surface of the mold core used to form the molding chamber, the cooling effect of different positions of the injection product can be kept highly consistent, so that the temperature uniformity is improved.

Description

Technical Field

[0001] This application relates to the field of injection molding technology, and more particularly to an injection mold. Background Technology

[0002] Traditional injection molds typically have multiple circular holes that are interconnected to form cooling water channels. Cooling water circulates through these channels to cool the mold.

[0003] However, when the product to be injection molded has a complex surface, the cooling water channels of traditional injection molds cannot adapt to the changes in the product's surface. This results in inconsistent cooling effects on different locations on the target product (the product corresponding to the production target), leading to poor product quality. At the same time, because molds need to have high mechanical strength to prevent deformation under stress that renders them unusable for injection molding, creating circular holes to form cooling water channels significantly reduces the mold's mechanical strength. Alternatively, the only solution is to increase the mold's thickness to ensure sufficient mechanical strength, but this increases the mold's size and weight. Utility Model Content

[0004] The injection mold provided in this application can improve the cooling efficiency of the injection mold, maintain a high degree of consistency in the cooling effect of different parts of the injection molded product, and improve the temperature uniformity.

[0005] The first aspect of this application provides an injection mold, comprising:

[0006] Two mold frames, arranged opposite to each other;

[0007] Two mold cores are arranged one-to-one on two mold frames and located between the two mold frames. The two mold cores are arranged opposite each other to form a molding cavity.

[0008] At least one of the mold cores and the mold frame to which it is connected are formed a first conformal water channel, the first conformal water channel being disposed corresponding to the molding chamber, and the orthographic projection of the cooling area of ​​the first conformal water channel on the mold core covering the surface of the mold core used to construct the molding chamber;

[0009] The first conformal water channel extends continuously between the mold frame and the mold core. In the thickness direction of the mold core, the mold core is provided with a first water inlet and a first water outlet. The first water inlet is connected to one end of the first conformal water channel along its extension direction, and the first water outlet is connected to the other end of the first conformal water channel along its extension direction.

[0010] In injection mold cooling technology, conformal cooling channels are designed according to the size and shape of the molding cavity, adapting the cooling channels to the surface of the molding cavity. This ensures that the cooling area of ​​the first conformal cooling channel covers the surface of the mold core that forms the molding cavity, maintaining a relatively consistent cooling effect at different locations within the molding cavity. The injection mold of this application, by separating the mold base and mold core, allows for the creation of a first conformal cooling channel between the mold base and mold core, adapted to the size and shape of the molding cavity, reducing the manufacturing difficulty of the first conformal cooling channel. Furthermore, because the first conformal cooling channel matches the surface of the molding cavity formed by the mold core, it ensures a high degree of consistency in cooling effect across different locations of the injection molded product, thereby improving temperature uniformity. Furthermore, by creating cooling water channels on the surface of the mold core, compared to creating channels inside the mold core, the minimum thickness requirement for the mold core can be reduced. This allows the mold core to maintain high mechanical strength while keeping the minimum thickness constant, achieving lightweight design of the injection mold while maintaining sufficient structural stability. Additionally, because the mold core has a first inlet and a first outlet that match the first conformal cooling channels, there is no need to install inlet and outlet ports on the mold base. When different products need to be manufactured, only the mold core needs to be replaced, without replacing the mold base. This improves the versatility of the mold base and reduces the manufacturing cost of the injection mold.

[0011] In one possible implementation, the core comprises:

[0012] The mold core comprising the first conformal water channel includes:

[0013] The mating surface faces the mold frame and is attached to the mold frame. The mating surface is provided with a continuously extending groove. The mold frame covers the groove to form the first conformal water channel. The mold core is provided with the first water inlet at one end corresponding to the extension direction of the groove, and the mold core is provided with the first water outlet at the other end corresponding to the extension direction of the first groove.

[0014] A cavity surface, which is disposed opposite to the mating surface in the thickness direction of the mold core, is configured as at least one surface of the molding chamber.

[0015] By designing the first conformal cooling channel as a groove, when the mold base and mold core are fitted together, the mold base covers the groove to form the first conformal cooling channel. This reduces the manufacturing difficulty of the first conformal cooling channel and makes it easier to control the specific shape, extension direction, and depth of the first conformal cooling channel at different locations. This allows the first conformal cooling channel to better adapt to the shape of the cavity surface, improving the temperature uniformity when cooling the cavity surface. Furthermore, the groove extends continuously on the mating surface to cover the area on the mold core that is desired to be cooled (the target area). That is, the first conformal cooling channel covers the target area through a single groove. A first inlet can be used to supply coolant to the groove, while a first outlet can be used to discharge the coolant from the groove. This reduces and simplifies the structural setup of the first conformal cooling channel, thereby reducing the manufacturing cost of the injection mold.

[0016] In one possible implementation, the mold core further includes a side surface connected to the mating surface, the side surface having a first water inlet and a first water outlet, the first water inlet and the first water outlet being located on the same side of the mold core;

[0017] The first conformal water channel further includes a first inlet section and a first outlet section. A portion of the first inlet section extends along the thickness direction of the mold core and communicates with one end of the groove. Another portion of the first inlet section extends along a direction perpendicular to the side surface and communicates with the first inlet. A portion of the first outlet section extends along the thickness direction of the mold core and communicates with the other end of the groove. Another portion of the first outlet section extends along a direction perpendicular to the side surface and communicates with the first outlet.

[0018] By placing the first water inlet for supplying water to the groove and the first water outlet for draining water from the groove on the same side of the mold core, interference between the water supply and drainage pipes and the mold frame or mold core can be avoided, reducing the difficulty of setting up the coolant delivery pipeline. Furthermore, when maintaining the injection mold or connecting pipes, since the first and second water inlets are on the same side of the mold core, only one side of the mold core needs to be maintained or connected, simplifying the operation. Additionally, since the coolant enters directly into the mold core, heat exchange between the coolant and other structures outside the mold core is reduced, thereby improving the heat exchange effect between the coolant and the cavity surface. Because both the first water inlet and the first water outlet are inside the mold core, it is convenient to place the first water inlet and the first water outlet on the side surface, rather than at the junction of the mold core and the mold frame, reducing the difficulty of setting up sealing structures at the first water inlet and the first water outlet.

[0019] In one possible implementation, the mold core having the first conformal water channel includes:

[0020] The mating surface faces the mold frame and is provided with a continuously extending groove. The mold core is provided with a first water inlet at one end corresponding to the extension direction of the groove, and a first water outlet at the other end corresponding to the extension direction of the groove.

[0021] A cavity surface, wherein the cavity surface and the mating surface are disposed opposite each other in the thickness direction of the mold core, and the cavity surface is configured as at least one surface of the molding chamber;

[0022] The injection mold also includes:

[0023] A heat insulation plate is disposed between the mold core and the mold frame, which have the first conformal water channel. The heat insulation plate is attached to the mating surface and covers the groove to form the first conformal water channel.

[0024] By setting a heat insulation plate between the mold core and the mold frame to seal the groove and form the first conformal water channel, it is possible to prevent water seepage between the mold core and the mold frame, and also to reduce the heat exchange between the coolant and the mold frame. This allows the coolant to exchange heat with the mold core more concentratedly, thereby improving the cooling efficiency of the cavity surface.

[0025] In one possible implementation, the first conformal water channel is formed between each of the two mold cores and their respective corresponding mold frames.

[0026] In this way, both mold cores on the two surfaces of the molding chamber can be cooled by the coolant in the corresponding first conformal water channel, which can improve the cooling efficiency. At the same time, both surfaces of the target product in the molding chamber can be cooled, improving the uniform temperature effect of cooling the target product.

[0027] Secondly, this application provides an injection mold, the injection mold comprising:

[0028] Two mold frames, arranged opposite to each other;

[0029] Two mold cores are arranged one-to-one on two mold frames and located between the two mold frames. The two mold cores are arranged opposite each other to form a molding cavity.

[0030] At least one of the mold cores and the mold frame to which it is connected are formed a second conformal water channel, the second conformal water channel being disposed corresponding to the molding chamber, such that the orthographic projection of the cooling area of ​​the second conformal water channel on the mold core covers the surface of the mold core used to construct the molding chamber;

[0031] The mold frame is provided with:

[0032] Second water inlet;

[0033] Second outlet;

[0034] An internal water system, comprising a main water system and a sub-water system, wherein the main water system is connected between the second inlet and the second outlet and extends along a first direction, and the sub-water system is connected to the main water system and extends along a second direction;

[0035] A partition, located in the internal water passage and extending along the second direction, is used to separate the sub-water passage and part of the main water passage on a plane perpendicular to the first direction, so that the sub-water passage forms a connected second inlet section and a second outlet section along the first direction;

[0036] The mold core is provided with a cooling tank extending in the second direction on the surface facing the mold frame. The cooling tank is connected to the end of the sub-water passage away from the main water passage. The cooling tank is used to allow the coolant in the main water passage to enter the interior of the mold core through the second water inlet section and to flow back to the main water passage through the second water outlet section, so as to flow out through the second water outlet.

[0037] The internal water channel and the cooling tank together form the second conformal water channel;

[0038] Wherein, the first direction is perpendicular to the second direction, and the second direction is the thickness direction of the mold frame.

[0039] By creating cooling channels extending along the thickness direction on the mold core, and injecting coolant into the cooling channels using internal and sub-channels on the mold frame, the cooling area of ​​the second conformal water channel can cover the surface of the mold core that forms the molding cavity. When the mold core is thick, or some parts of the mold core are thick, the cooling channels extending along the thickness direction allow the coolant entering the cooling channels to get closer to the surface forming the molding cavity, thereby improving the cooling effect of the coolant on the target product within the molding cavity. Furthermore, by separately arranging the second conformal water channel on the mold frame and the mold core, the volume of the hollowed-out portion on the mold core can be reduced, allowing the mold core to maintain high mechanical strength and preventing deformation during use (such as demolding). Compared to only arranging cooling channels on the mold frame, setting cooling channels on the mold core reduces the distance between the coolant and the surface of the mold core forming the molding cavity, thus improving cooling efficiency.

[0040] In one possible implementation, the partition extends partially into the cooling tank along the second direction, thereby separating the portion of the cooling tank near the mold frame.

[0041] In this way, the flow area of ​​the cooling tank section that can be used for different parts of the connecting sub-water channel is appropriately reduced, so as to increase the flow rate of the coolant at the bottom of the cooling tank, thereby accelerating the mixing of the coolant at the bottom of the cooling tank and improving the cooling efficiency of the coolant at this location on the surface of the mold core that forms the molding cavity.

[0042] In one possible implementation, the injection mold further includes:

[0043] A heat insulation plate is disposed between the mold core and the mold frame, which are provided with the second conformal water channel. The heat insulation plate is provided with a flow hole, and the water channel outlet is connected to the cooling tank through the flow hole.

[0044] By installing a heat insulation plate between the mold core and the mold frame, water seepage between the mold core and the mold frame can be prevented, and heat exchange between the coolant and the mold frame can be reduced. This allows the coolant to exchange heat with the mold core more concentratedly, improving the cooling efficiency of the cavity surface.

[0045] In one possible implementation, there are multiple sub-water channels, partitions, and cooling tanks, with each sub-water channel connected to the main water channel, and the sub-water channels, partitions, and cooling tanks are arranged in a one-to-one correspondence.

[0046] By setting multiple sub-water channels, baffles, and cooling tanks, and connecting the main water channel with multiple sub-water channels, while ensuring that the sub-water channels, baffles, and cooling tanks are set up one-to-one, the flow path of the coolant can cover the surface of the molding cavity formed by the mold core as much as possible, thereby improving the cooling efficiency of the mold core, and thus improving the cooling efficiency of the target product in the molding cavity.

[0047] In one possible implementation, both mold frames are provided with the main water channel, the sub-water channel and the partition plate, and both mold cores are provided with the cooling tank. The cooling tanks of the two mold cores are connected to the internal water channel of their respective mold frames through the corresponding sub-water channel.

[0048] In this way, both mold cores on the two surfaces of the molding chamber can be cooled by the coolant in the corresponding second conformal water channel, which can improve the cooling efficiency. At the same time, both surfaces of the target product in the molding chamber can be cooled, improving the uniform temperature effect of cooling the target product.

[0049] Compared with the prior art, the beneficial effects of this application are as follows:

[0050] By separating the mold base and mold core, cooling water channels can be configured between them, adapting to the size and shape of the molding cavity. These conformal cooling channels, matching the surface of the mold core that forms the molding cavity, reduce the manufacturing difficulty of the conformal cooling channels. Furthermore, because the conformal cooling channels match the surface of the mold core that forms the molding cavity, the cooling effect across different parts of the injection molded product remains highly consistent, thus improving temperature uniformity. Moreover, creating cooling water channels on the surface of the mold core, compared to creating channels inside the mold core, reduces the minimum thickness requirement for the mold core. This allows the mold core to maintain high mechanical strength while reducing thickness, achieving lightweight design of the injection mold while maintaining sufficient structural stability. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the structure of the back cover of a television set;

[0052] Figure 2 This is a three-dimensional structural schematic diagram of the injection mold according to an embodiment of this application;

[0053] Figure 3 yes Figure 2 A top view of the injection mold shown;

[0054] Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the injection mold along the A-A' direction;

[0055] Figure 5 This is a three-dimensional structural diagram of the first mold core in the embodiments of this application;

[0056] Figure 6 This is a cross-sectional schematic diagram of an injection mold having a first heat insulation plate in an embodiment of this application;

[0057] Figure 7 This is a cross-sectional schematic diagram of another injection mold in the embodiments of this application;

[0058] Figure 8 yes Figure 7 Enlarged view of region A in the middle;

[0059] Figure 9 yes Figure 7 Enlarged view of region B in the middle;

[0060] Figure 10 This is another structural schematic diagram of the injection mold in the embodiments of this application.

[0061] Explanation of reference numerals in the attached figures:

[0062] 1. Rear cover; 11. Mounting slot;

[0063] 2. Injection mold; 2a. Inlet pipe; 2b. Outlet pipe; 21. First mold plate; 211. First mold base; 2111. Second inlet; 2112. Second outlet; 2113. First internal water channel; 2113a. Main water channel; 2113b. Sub-water channel; 2113c. Second inlet section; 2113d. Second outlet section; 2114. First partition plate; 212. First mold core; 212a. First conformal water channel; 212b. First inlet; 212c. First outlet; 212 1. First mating surface; 2121a. First groove; 2121b. Cooling tank; 2122. First cavity surface; 2123. First side surface; 213. First heat insulation plate; 2131. First flow hole; 22. Second template; 221. Second mold frame; 222. Second mold core; 222a. Second conformal water channel; 2221. Second mating surface; 2221a. Second groove; 2222. Second cavity surface; 223. Second heat insulation plate; 2231. Second flow hole; 23. Molding chamber. Detailed Implementation

[0064] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0065] In this application, the terms "upper," "rear," "inner," "outer," and "middle," etc., indicate orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0066] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0067] Furthermore, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable link, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection via an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0068] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0069] When the product to be injection molded has a relatively complex surface, the mold core in the injection mold needs to have a correspondingly complex molding surface. When the molding surfaces of two mold cores fit together, they can form a molding chamber for molding the target product. After the molten material is injected into the molding chamber, it needs to be cooled with high efficiency and high temperature uniformity so that the product can be cooled and molded quickly while maintaining a high degree of consistency, thereby improving the manufacturing efficiency and quality of the product.

[0070] For example, see Figure 1 , Figure 1 This is a schematic diagram of the structure of a television set back cover. In this application, the back cover 1 of a television set is used as an example for illustration, but it is not stated that the injection mold of this application is only used for the injection molding of the back cover 1 of the television set.

[0071] The back cover 1 of a television set typically fits into the outer frame to form a receiving space (as shown in the diagram). Components such as circuit boards and display screens can be housed within this space. Therefore, the back cover 1 usually needs to have a recess to accommodate these components. Simultaneously, a mounting groove 11 is provided on the side of the back cover 1 facing away from the outer frame. The mounting groove 11 is used to mate with a bracket or mounting platform for installation, allowing the television to be placed on a table or hung on a wall. The nested fit between the mounting groove 11 and the bracket or mounting platform reduces the overall volume of the product and also serves as a limiting mechanism. It can be seen that to meet the above requirements, the back cover 1 needs to have a relatively complex shape; that is, the mold used for injection molding the back cover 1 should also have a corresponding molding cavity.

[0072] However, the cooling channels of injection molds in related technologies cannot adapt to the complex molding surfaces of the mold core. This results in varying cooling efficiency of the coolant in the cooling channels at different locations on the molding surface of the mold core, leading to inconsistent cooling effects and poor temperature uniformity, which in turn results in lower product molding quality. To make the cooling channels fit the molding surface as closely as possible, the inventors attempted to design more and more complex cooling pipes. However, they found that this would increase the manufacturing difficulty and cost of the injection mold. Furthermore, the increased volume of the hollowed-out portion of the injection mold would directly reduce its mechanical strength, making it more susceptible to deformation due to heat or stress, thus affecting the quality of the final molded product (e.g., the back shell).

[0073] To address the aforementioned technical problems, embodiments of this application provide an injection mold. This injection mold separates the mold base and the mold core, allowing for the creation of conformal cooling water channels on the side of the mold core facing away from the cavity surface, tailored to the size and shape of the cavity surface. This reduces the manufacturing difficulty of conformal cooling channels. Furthermore, since both the first and second mold cores, which form the molding cavity, have conformal cooling channels, the cooling efficiency of the injection mold is improved, and the cooling effect at different locations of the injection molded product remains highly consistent, enhancing temperature uniformity. Moreover, creating cooling water channels on the surface of the mold core, compared to creating channels inside the mold core, reduces the minimum thickness requirement for the mold core, allowing both the first and second mold cores to maintain high mechanical strength while reducing thickness.

[0074] It is understood that the coolant can be a fluid medium such as water, oil, or ethanol that can cool the mold core. The specific type / category of coolant can be selected according to actual production needs, and this application does not make any specific restrictions on it.

[0075] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0076] Please see Figures 2 to 5 , Figure 2 This is a three-dimensional structural diagram of the injection mold according to an embodiment of this application. Figure 3 yes Figure 2 The diagram shown is a top view of the injection mold. Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the injection mold along the A-A' direction. Figure 5 This is a three-dimensional structural diagram of the first mold core in the embodiments of this application.

[0077] In the first aspect, this application discloses an injection mold. The injection mold 2 provided in the embodiments of this application includes two templates and two mold cores. For ease of distinction, the following description will use one of the two templates as the first template and the other as the second template, and one of the two mold cores as the first mold core and the other as the second mold core.

[0078] In some embodiments, the first template 21 and the second template 22 are arranged opposite to each other, and the first template 21 and the second template 22 together form a molding chamber 23. The molten material used to form the back shell 1 is cooled after entering the molding chamber 23 and forms the back shell 1.

[0079] It is understood that the above-mentioned back shell is only an example of a molded product, and does not imply that the injection mold of this application is only used for the injection molding of the back shell 1 of a television set.

[0080] In some embodiments, the first template 21 includes a first mold frame 211 and a first mold core 212, with the first mold core 212 disposed on the first mold frame 211. The first mold frame 211 is generally made of metal and is used as a support structure or installation structure.

[0081] In some embodiments, the second template 22 includes a second mold frame 221 and a second mold core 222, with the second mold core 222 disposed on the second mold frame 221. The second mold core 222 is disposed opposite to the first mold core 212, and the first mold core 212 and the second mold core 222 are located between the first mold frame 211 and the second mold frame 221, together forming the aforementioned molding chamber 23.

[0082] It is understandable that the second mold frame 221 may have the same structure as the first mold frame 211 or may be different from the first mold frame 211.

[0083] In some embodiments, a first conformal water channel 212a is formed between the first mold frame 211 and the first mold core 212, and the first conformal water channel 212a is correspondingly arranged with the molding chamber 23.

[0084] In some embodiments, the first conformal water channel 212a extends continuously between the first mold frame 211 and the first mold core 212, such that the orthographic projection of the first conformal water channel 212a in the thickness direction of the first mold core 212 can cover the surface of the first mold core 212 used to construct the molding chamber 23.

[0085] In some embodiments, the first mold core 212 is provided with a first inlet 212b and a first outlet 212c. The first inlet 212b is connected to one end of the first conformal water channel 212a along its own extension direction, and the first outlet 212c is connected to the other end of the first conformal water channel 212a along its own extension direction.

[0086] When the orientation of the first inlet 212b is the same as the extension direction of the first conformal water channel 212a, the resistance encountered by the coolant when it enters the first conformal water channel 212a from the first inlet 212b is small. This helps the coolant enter the first conformal water channel 212a at a higher flow rate, thereby improving the heat exchange efficiency between the coolant and the molten material in the molding chamber 23. Similarly, when the orientation of the first outlet 212c is the same as the extension direction of the first conformal water channel 212a, the resistance encountered by the coolant when it drains from the first conformal water channel 212a to the first outlet 212c is reduced. This facilitates the discharge of coolant from the first conformal water channel 212a and helps new low-temperature coolant enter the first conformal water channel 212a from the first inlet 212b.

[0087] It should be understood that the first conformal water channel 212a being correspondingly arranged with the molding chamber 23 means that, in the thickness direction of the first mold frame 211, the extension path of the first conformal water channel 212a can cover the surface of the molding chamber 23. Furthermore, the distribution, depth, width, etc., of the first conformal water channel 212a are adapted to the surface of the molding chamber 23. For example, when the surface of the molding chamber 23 has different molding areas, and the areas and / or shapes and / or heights of the different molding areas are different, then the distribution area and / or shape and / or depth of different portions of the first conformal water channel 212a corresponding to the different areas are matched with their corresponding molding areas. For example, when a portion of the molding area is approximately triangular, the distribution area of ​​the first conformal water channel 212a corresponding to that molding area is also approximately triangular, and its size is approximately equal to that molding area.

[0088] It should be noted that the first conformal water channel 212a covers the surface of the first mold core 212 used to construct the molding chamber 23. This mainly refers to the cooling area of ​​the first conformal water channel 212a, which can cover the surface of the molding chamber 23, so that the product in the molding chamber 23 can be cooled by the coolant in the first conformal water channel 212a at different positions on the surface of the molding chamber 23.

[0089] The aforementioned injection mold 2 separates the first mold base 211 and the first mold core 212, allowing the first conformal cooling channel 212a to be disposed on the surface of the first mold base 211 and / or the first mold core 212. This allows for the creation of a cooling channel between the first mold base 211 and the first mold core 212 that is adapted to the size and shape of the molding cavity 23. Specifically, the first conformal cooling channel 212a matches the surface of the molding cavity 23 formed by the first mold core 212, reducing the manufacturing difficulty of the first conformal cooling channel 212a. Furthermore, because the first conformal cooling channel 212a matches the surface of the molding cavity 23 formed by the first mold core 212, the cooling effect at different locations of the injection molded product remains highly consistent, thereby improving temperature uniformity. Furthermore, by creating cooling water channels on the surface of the first mold core 212, compared to creating water channels inside the first mold core 212, the minimum thickness requirement for the first mold core 212 can be reduced. This allows the first mold core 212 to maintain high mechanical strength while keeping the minimum thickness, achieving a lightweight design of the injection mold 2 while maintaining sufficient structural stability. Additionally, since the first mold core 212 is equipped with a first inlet 212b and a first outlet 212c that match the first conformal water channel 212a, the first mold base 211 does not need to have inlets and outlets. When different products need to be manufactured, only the mold core needs to be replaced, without replacing the mold base. This improves the versatility of the mold base and reduces the manufacturing cost of the injection mold 2.

[0090] It is understood that the first conformal water channel 212a can be disposed on the surface of the mold core facing the mold holder, or the first conformal water channel 212a can be disposed on the surface of the mold holder facing the mold core, or the first conformal water channel 212a can be disposed on two opposing surfaces of the mold holder and the mold core, that is, the mold holder and the mold core are each provided with a portion of the first conformal water channel 212a. The following description takes the first conformal water channel 212a disposed on the surface of the mold core as an example, but it is not stated that the following content only applies to this example.

[0091] In some embodiments, the injection mold 2 may be provided with an inlet pipe 2a and an outlet pipe 2b. The inlet pipe 2a is connected to one end of the first conformal water channel 212a and is used to supply coolant to the first conformal water channel 212a. The outlet pipe 2b is connected to the other end of the first conformal water channel 212a, and the first conformal water channel 212a discharges the coolant after heat exchange with the first mold core 212 through the outlet pipe 2b.

[0092] It should be noted that the first conformal water channel 212a may also be provided between the second mold frame 221 and the second mold core 222. Alternatively, the first conformal water channel 212a may not be provided between the first mold frame 211 and the first mold core 212, but may only be provided between the second mold frame 221 and the second mold core 222.

[0093] It is understandable that when the first conformal water passage 212a is also provided between the second mold frame 221 and the second mold core 222, the water inlet pipe 2a and the water outlet pipe 2b can also be connected to the first conformal water passage 212a.

[0094] This embodiment is illustrated by taking the example of a first conformal water channel 212a being provided between the first mold frame 211 and the first mold core 212, and between the second mold frame 221 and the second mold core 222. However, it is not stated that the following content applies only to this example.

[0095] See you again Figure 5 In some embodiments, the first mold core 212 includes a first mating surface 2121 facing and attached to the first mold frame 211. The first mold frame 211 may completely cover the first mating surface 2121 or only cover a portion of it. The first mating surface 2121 is provided with a first groove 2121a, which extends continuously. The first mold frame 211 covers the first groove 2121a, thereby constructing the aforementioned first conformal water channel 212a.

[0096] In some embodiments, the first mold core 212 is provided with the first water inlet 212b at the starting end of the first groove 2121a along the extending direction of the first groove 2121a, and at the end of the first groove 2121a, is provided with the first water outlet 212c along the extending direction of the first groove 2121a.

[0097] The first mold core 212 also includes a first cavity surface 2122, which is disposed opposite to the first mating surface 2121 along the thickness direction of the first mold core 212. The first cavity surface 2122 is configured as at least one surface of the molding chamber 23. The first cavity surface 2122 is used to directly contact the molten material when the molten material enters the molding chamber 23, so that the molten material forms one side of the rear shell 1.

[0098] Setting the first conformal water channel 212a as the first groove 2121a reduces the manufacturing difficulty of the first conformal water channel 212a and makes it easier to control the specific shape, extension direction, and depth of the first conformal water channel 212a at different positions. This allows the first conformal water channel 212a to better adapt to the shape of the first cavity surface 2122, thereby improving the temperature uniformity when the first conformal water channel 212a cools the first cavity surface 2122. Furthermore, the first groove 2121a extends continuously on the first mating surface 2121 to cover the area on the first mold core 212 that is expected to be cooled. That is, the first conformal water channel 212a covers the target area through a first groove 2121a. A first inlet 212b can be used to supply coolant to the first groove 2121a, while a first outlet 212c is used to discharge the coolant from the first groove 2121a. This reduces and simplifies the structural setup of the first conformal water channel 212a, thereby reducing the manufacturing cost of the injection mold 2.

[0099] When a portion of the first conformal water channel 212a is also provided on the first mold frame 211, the first mold frame 211 may be provided with a groove corresponding to the first groove 2121a. When the first mold frame 211 and the first mold core 212 are assembled together, the groove on the first mold frame 211 and the first groove 2121a together form the aforementioned first conformal water channel 212a.

[0100] Optionally, the cross-sectional shape of the first groove 2121a perpendicular to its own extension direction can be set as needed, such as a semi-circle, trapezoid, semi-ellipse, etc., and this application does not make specific limitations in this regard.

[0101] In some embodiments, at the location where the first inlet 212b communicates with the first groove 2121a, the size and / or shape of the first inlet 212b can be consistent with the size and / or shape of the cross section of the first groove 2121a perpendicular to its extension direction. In this way, the resistance encountered by the coolant when it enters the first groove 2121a from the first inlet 212b can be further reduced.

[0102] In some embodiments, at the location where the first inlet 212b communicates with the first groove 2121a, when the size of the first inlet 212b is different from the size of the cross section of the first groove 2121a perpendicular to its own extension direction, but the shapes are the same, the resistance of the coolant can be reduced by gradually decreasing or gradually increasing the cross section size of the part connecting the first inlet 212b and the first groove 2121a.

[0103] It is understandable that the relationship between the size and / or shape of the first outlet 212c and the size and / or shape of the cross section of the first groove 2121a perpendicular to its own extension direction at the position where the first outlet 212c connects with the first groove 2121a can be set with reference to the setting method between the first inlet 212b and the first groove 2121a.

[0104] In some embodiments, the first mold core 212 further includes a first side surface 2123, which is connected to the first mating surface 2121. The first side surface 2123 has the aforementioned first water inlet 212b and first water outlet 212c. The first water inlet 212b and the first water outlet 212c are located on the same side of the first mold core 212. By placing the first water inlet 212b for supplying water to the first groove 2121a and the first water outlet 212c for draining water from the first groove 2121a on the same side of the first mold core 212, interference between the pipes supplying water to the first groove 2121a and draining water from the first groove 2121a and the first mold frame 211 or the first mold core 212 can be avoided, reducing the difficulty of setting up the coolant delivery pipeline. Furthermore, when maintaining the injection mold 2 or connecting pipes, since the first inlet 212b and the first outlet 212c are located on one side of the first mold core 212, only one side of the first mold core 212 needs to be maintained or connected, simplifying the operation. Additionally, since the coolant directly enters the first mold core 212, heat exchange between the coolant and other structures besides the first mold core 212 is reduced, thereby improving the heat exchange effect between the coolant and the first cavity surface 2122.

[0105] In some embodiments, the first side surface 2123 may be the peripheral side surface of the first mold core 212, or at least a portion of the peripheral side surface.

[0106] In some embodiments, the first conformal water channel 212a further includes a first inlet section (not shown) and a second inlet section (not shown). A portion of the first inlet section extends along the thickness direction P1 of the first mold core 212 and communicates with one end of the first groove 2121a. Another portion of the first inlet section extends along a direction perpendicular to the first side surface 2123 and communicates with the first inlet port 212b. A portion of the first outlet section extends along the thickness direction P1 of the first mold core 212, and another portion extends along a direction perpendicular to the first side surface 2123 and communicates with the first outlet port 212c. Thus, coolant enters the first inlet section from the first inlet port 212b, then enters the first groove 2121a, and then enters the first outlet section from the first groove 2121a. Finally, the coolant flows out of the first mold core 212 through the first outlet port 212c. Since the first water inlet section and the first water outlet section are both inside the first mold core 212, it is convenient to set the first water inlet 212b and the first water outlet 212c on the first side surface 2123, instead of setting the first water inlet 212b and the first water outlet 212c at the junction of the first mold core 212 and the first mold frame 211, which can reduce the difficulty of setting a sealing structure at the first water inlet 212b and the first water outlet 212c.

[0107] In some embodiments, the portion of the first water inlet section extending along the thickness direction P1 of the first mold core 212 and the portion of the first water outlet section extending along the thickness direction P1 of the first mold core 212 can both penetrate the first mating surface 2121.

[0108] Please see also Figure 6 , Figure 6 This is a cross-sectional schematic diagram of an injection mold having a first heat insulation plate in an embodiment of this application.

[0109] In some embodiments, the injection mold 2 further includes a first heat insulation plate 213, which is disposed between the first mold base 211 and the first mold core 212. The first heat insulation plate 213 is attached to the first mating surface 2121 and is used to cover the first groove 2121a so that the first groove 2121a forms a closed water channel. By sealing the first groove 2121a with the first heat insulation plate 213, the first groove 2121a and the first heat insulation plate 213 together form the aforementioned first conformal water channel 212a, which can prevent coolant from flowing out from the gap between the first mold base 211 and the first mold core 212 after entering the first groove 2121a, thus avoiding water seepage. At the same time, since the heat insulation effect of the first heat insulation plate 213 can reduce the heat exchange between the coolant and the first mold base 211, it reduces the influence of the temperature of the first mold base 211 on the coolant, allowing the coolant to exchange heat with the first mold core 212 more concentratedly, thereby improving the cooling efficiency of the first cavity surface 2122.

[0110] In some embodiments, when the injection mold 2 includes a first heat insulation plate 213, a groove (not shown) corresponding to the first groove 2121a may also be provided on the first heat insulation plate 213. When the first heat insulation plate 213 is provided on the first mating surface 2121, the groove on the first heat insulation plate 213 and the first groove 2121a together form the first conformal water channel 212a.

[0111] In some embodiments, the first heat insulation plate 213 can be made of rigid resin or plastic, which enables the first heat insulation plate 213 to provide sufficient support for the first mold core 212 and prevents the first heat insulation plate 213 from deforming during use. At the same time, it can also reduce the overall weight of the first mold plate 21, which helps to achieve a lightweight design of the injection mold 2.

[0112] In some embodiments, the first heat insulation plate 213 may also be made of a high-temperature resistant material, which can prevent the first heat insulation plate 213 from being deformed by high temperature and avoid reducing the sealing effect of the first heat insulation plate 213 on the first groove 2121a.

[0113] The first mating surface 2121 and the first heat insulation plate 213 can be fixed by screws, clips, or locking pins, and this application does not make specific limitations in this regard.

[0114] In some embodiments, a sealing ring (not shown) may be provided between the first mating surface 2121 and the first heat insulation plate 213. The sealing ring surrounds the outside of the opening of the first groove 2121a. When the first heat insulation plate 213 is fixed to the first mating surface 2121, the sealing ring can seal the gap between the first mating surface 2121 and the first heat insulation plate 213, further improving the sealing performance between the first mating surface 2121 and the first heat insulation plate 213 and preventing water leakage.

[0115] Understandably, when the first heat insulation plate 213 is not provided in the injection mold 2, the sealing ring can be provided between the first mating surface 2121 and the first mold base 211.

[0116] Optionally, the sealing ring can be made of materials with a certain degree of elasticity and sealing performance, such as rubber or silicone.

[0117] In some embodiments, a limiting groove (as shown in the figure) may be provided on the first mating surface 2121. The limiting groove surrounds the outer edge of the opening of the first groove 2121a, and the sealing ring may be partially embedded in the limiting groove. The limiting groove is used to fix the position of the sealing ring. The sealing ring and the limiting groove may be an interference fit.

[0118] In some embodiments, the second mold core 222 also has a second mating surface 2221 and a second cavity surface 2222 arranged opposite to each other in its own thickness direction. The second mating surface 2221 is attached to the second mold frame 221, and the second cavity surface 2222 and the first cavity surface 2122 together form the above-mentioned molding chamber 23.

[0119] When the first conformal water channel 212a is also provided between the second mold frame 221 and the second mold core 222, the first conformal water channel 212a can also extend continuously on the second joint surface 2221, and an inlet (not shown) and an outlet (not shown) similar to the first inlet 212b and the first outlet 212c are provided on the second mold core 222.

[0120] It is understood that the distribution, depth and width of the first conformal water channel 212a on the second mold core 222 can be the same as or different from the first conformal water channel 212a on the first mold core 212. The specific arrangement can be designed according to the actual target product, and this application does not make specific limitations in this regard.

[0121] In some embodiments, the first conformal water channel 212a on the first mold core 212 can be configured as a groove that extends continuously on the second mating surface 2221, i.e., the second groove 2221a. When the second mold frame 221 and the second mold core 222 are fitted together, the second mold frame 221 covers the second groove 2221a so that together with the second groove 2221a, they form a closed conformal water channel.

[0122] In some embodiments, a sealing ring similar to that between the first mold frame 211 and the first mold core 222 may also be provided between the second mold frame 221 and the second mold core 222. Furthermore, a limiting groove for limiting the sealing ring may also be provided on the second mating surface 2221.

[0123] It is understandable that the sealing ring and limiting groove set between the second mold frame 221 and the second mold core 222 can be adaptively set according to the extension path of the first conformal water channel 212a on the first mold core 212.

[0124] In some embodiments, the first heat insulation plate 213 described above may also be provided between the second mold frame 221 and the second mold core 222. The first heat insulation plate 213 on the second mold core 222 can be used to cover the second groove 2221a to form a closed water channel.

[0125] It is understandable that when corresponding conformal water channels are provided between the first mold frame 211 and the first mold core 212, and between the second mold frame 221 and the second mold core 222, the first mold core 212 and the second mold core 222 that form the two surfaces of the molding chamber 23 can be cooled by the coolant in the corresponding conformal water channels, which can improve the cooling efficiency. At the same time, both surfaces of the target product in the molding chamber 23 can be cooled, improving the uniform temperature effect of cooling the target product.

[0126] At this time, the second mold core 222 may include a second side surface (not shown) connected between the second mating surface 2221 and the second cavity surface 2222, and the above-mentioned water inlet and water outlet are opened on the second side surface to communicate with the second groove 2221a. The water inlet is used to provide coolant to the second groove 2221a, and the water outlet is used to discharge coolant from the second groove 2221a.

[0127] It is understood that the inlet and outlet can be configured with reference to the first inlet 212b and the first outlet 212c described above. Furthermore, the second mold core 222 can be provided with a structure similar to the first inlet section and the first outlet section described above, so as to communicate with the inlet and outlet on the second mold core 222 respectively.

[0128] Secondly, this application also discloses another type of injection mold. Please refer to [the following text is also mentioned]. Figure 7 and Figure 8 , Figure 7 This is a cross-sectional schematic diagram of another injection mold in the embodiments of this application. Figure 8 yes Figure 7 An enlarged schematic diagram of region A in the middle.

[0129] In some embodiments, the injection mold 2 is substantially the same as the injection mold 2 described in the first aspect, both including two mold frames and two mold cores, with the two mold cores located between the two mold frames and arranged opposite to each other to jointly form the aforementioned molding chamber 23. The main difference between the injection mold 2 involved in the second aspect and the injection mold 2 described in the first aspect is that the second conformal water channel 222a in the second aspect has a different structural design than the first conformal water channel 212a in the first aspect.

[0130] In the second aspect, the following example is used: two mold frames, namely the first mold frame 211 and the second mold frame 221, and two mold cores, namely the first mold core 212 and the second mold core 222. The second conformal water channel 222a includes at least two parts, one part of which is disposed in the first mold frame 211 and the other part of which is disposed in the first mold core 212. By separating the second conformal water channel 222a, the distribution and range of the second conformal water channel 222a can be adjusted more flexibly according to the actual situation, so that the orthogonal projection of the second conformal water channel 222a onto the cooling area of ​​the first mold core 212 in the thickness direction P1 of the first mold core 212 covers the surface of the first mold core 212 that forms the molding chamber 23. At the same time, it can separate the coolant delivery pipelines, avoid the first mold frame 211 or the first mold core 212 from having an excessively large hollowed-out volume, and reduce the impact on the mechanical strength of the first mold frame 211 and the first mold core 212.

[0131] In some embodiments, the first mold frame 211 has a second inlet 2111, a second outlet 2112, and a first internal water passage 2113. The first internal water passage 2113 includes a main water passage 2113a connected between the second inlet 2111 and the second outlet 2112 and extending along a first direction, and a sub-water passage 2113b extending along a second direction and communicating with the main water passage 2113a. The first mold frame 211 is provided with a first partition 2114 at a position corresponding to the sub-water passage 2113b. The first partition 2114 separates the sub-water passage 2113b and part of the main water passage 2113a on a plane perpendicular to the first direction. The first mold frame 211 is provided with a first water passage outlet (not shown) communicating with the sub-water passage 2113b on a surface facing the first mold core 212. The first direction and the second direction are perpendicular to each other, and the second direction is the thickness direction of the first mold frame 211 and the first mold core 212.

[0132] For example, the first partition 2114 can divide the sub-water passage 2113b into a second inlet section 2113c and a second outlet section 2113d.

[0133] A cooling tank 2121b extending along the aforementioned thickness direction is provided on the first mating surface 2121, and the cooling tank 2121b is connected to the first water channel outlet. The cooling tank 2121b enables the second water inlet section 2113c and the second water outlet section 2113d, which are separated by the first partition 2114, to remain connected. In this way, the first internal water channel 2113 and the cooling tank 2121b together construct the aforementioned second conformal water channel 222a. Coolant can enter the main water passage 2113a from the second inlet 2111, and flow from the main water passage 2113a into the second inlet section 2113c of the sub-water passage 2113b. Then, it enters the cooling tank 2121b from the first water passage outlet. The coolant entering the cooling tank 2121b exchanges heat with the first mold core 212. After that, it enters the second outlet section 2113d of the sub-water passage 2113b from the cooling tank 2121b through the first water passage outlet. Then, it enters the main water passage 2113a from the second outlet section 2113d, and finally flows out of the first mold frame 211 from the second outlet 2112.

[0134] By creating a cooling groove 2121b extending along the thickness direction on the first mold core 212 and injecting coolant into the cooling groove 2121b using the first internal water channel 2113 on the first mold frame 211, when the thickness of the first mold core 212 is large, or when some parts of the first mold core 212 are thick, the cooling groove 2121b extending along the thickness direction of the first mold core 212 allows the coolant entering the cooling groove 2121b to be closer to the surface of the molding chamber 23, thereby improving the cooling effect of the coolant on the target product in the molding chamber 23. In addition, by separately arranging the second conformal water channel 222a on the first mold frame 211 and the first mold core 212, the volume of the hollowed-out portion on the first mold core 212 can be reduced, allowing the first mold core 212 to maintain high mechanical strength and preventing deformation of the first mold core 212 during use (such as demolding). By providing a cooling tank 2121b on the first mold core 212, compared to providing a cooling water channel only on the first mold frame 211, the distance between the coolant and the surface on the first mold core 212 that forms the molding chamber 23 can be reduced, thereby improving cooling efficiency.

[0135] In some embodiments, a portion of the first partition 2114 may extend into the cooling tank 2121b to separate the portion of the cooling tank 2121b near the first mold frame 211. This arrangement appropriately reduces the flow area of ​​the portion of the cooling tank 2121b used to connect the second inlet section 2113c and the second outlet section 2113d, thereby increasing the flow rate of the coolant at the bottom of the cooling tank 2121b. This allows the coolant at the bottom of the cooling tank 2121b to mix more quickly, improving the cooling efficiency of the coolant at that location on the surface (i.e., the first cavity surface 2122) on the first mold core 212 where the molding chamber 23 is formed.

[0136] It should be noted that the length of the portion of the first partition 2114 extending into the cooling tank 2121b in the thickness direction is less than the length of the cooling tank 2121b in the thickness direction. This allows the second water inlet section 2113c and the second water outlet section 2113d to be connected near the bottom of the cooling tank 2121b.

[0137] In some embodiments, a sealing ring (not shown) may be provided on the first mating surface 2121 to surround the outside of the opening of the cooling tank 2121b. When the first mating surface 2121 is attached to the first mold frame 211, the sealing ring can seal the gap at the connection between the cooling tank 2121b and the first water outlet to prevent water leakage.

[0138] In some embodiments, the first mating surface 2121 may also be provided with a limiting groove (not shown) surrounding the outer side of the opening of the cooling tank 2121b. The aforementioned sealing ring is partially embedded in the limiting groove, which can limit the position of the sealing ring and prevent ineffective sealing due to displacement of the sealing ring. The sealing ring and the limiting groove may be an interference fit to improve sealing performance.

[0139] Understandably, when the first groove 2121a is a cooling tank 2121b, and the coolant circulates through the first internal water channel 2113 of the first mold frame 211, the first heat insulation plate 213 is provided with a first flow-through hole 2131 corresponding to the cooling tank 2121b and the outlet of the first water channel. The coolant flowing out from the second water inlet section 2113c enters the cooling tank 2121b after passing through the first flow-through hole 2131, and the coolant flowing out from the cooling tank 2121b enters the second water outlet section 2113d after passing through the flow-through hole 2131. Understandably, the first flow-through hole 2131 is also separated by the first partition plate 2114.

[0140] In some embodiments, the cooling tank 2121b can be divided into a first segment (not shown) and a second segment in the thickness direction. One end of the first segment is connected to the first water outlet, and the other end of the first segment is connected to the second segment, meaning the second segment is closer to the first mold core 212 than the first segment. The cross-sectional area of ​​the second segment perpendicular to the thickness direction is smaller than that of the first segment. Thus, when coolant flows from the first segment into the second segment, the reduced cross-sectional area increases the flow velocity of the coolant, generating turbulence in the coolant at the second end. This turbulence increases the rate of heat exchange between different particles within the coolant, thereby improving the cooling efficiency of the first cavity surface 2122.

[0141] In some embodiments, there are multiple cooling tanks 2121b, which are spaced apart on the first mating surface 2121. There are also multiple first water outlets, each corresponding to a cooling tank 2121b. The minimum distance between the bottom of any two cooling tanks 2121b and the corresponding position on the first cavity surface 2122 is equal. This means that the minimum distance between the coolant in all cooling tanks 2121b and the first cavity surface 2122 maintains high consistency, ensuring relatively consistent cooling effect of the coolant on different positions on the first cavity surface 2122. This improves the temperature uniformity of the first cavity surface 2122, thereby ensuring the consistency of the molded product. It is understood that multiple main water channels 2113a and multiple first baffles 2114 are also correspondingly provided.

[0142] In some embodiments, the difference in the minimum distance between the bottom of any two cooling tanks 2121b and the corresponding position on the first cavity surface 2122 does not exceed 10 mm. This ensures that the cooling effect of different cooling tanks 2121b on different positions of the first cavity surface 2122 remains highly consistent.

[0143] In some embodiments, the cooling water channel between the first mold frame 211 and the first mold core 212 can be a combination of a first groove 2121a extending on the first mating surface 2121 and a cooling tank 2121b. For example, the first groove 2121a extends and bends along the first mating surface 2121, and a cooling tank 2121b extending along the thickness direction is provided at the bottom of a portion of the first groove 2121a. It is understood that in this case, the first partition 2114 can be provided on the first heat insulation plate 213, and when the first heat insulation plate 213 is installed on the first mold core 212, the first partition 2114 extends into the cooling tank 2121b for separation. In this case, the first heat insulation plate 213 may not have a first flow hole 2131, and the first mold frame 211 may not have a first internal water channel 2113 and a first water channel outlet.

[0144] See you again Figure 7 See also Figure 9 , Figure 9 yes Figure 7 A magnified view of region B in the middle.

[0145] It is understood that the second conformal water channel 222a described above can also be provided between the second mold frame 221 and the second mold core 222. The second conformal water channel 222a between the second mold frame 221 and the second mold core 222 can be set with reference to the second conformal water channel 222a between the first mold frame 211 and the first mold core 212, which will not be elaborated here.

[0146] In some other examples, the second conformal water channel 222a between the second mold frame 221 and the second mold core 222 can also be configured as a combination of the first groove 2121a and the cooling tank 2121b that extend in a serpentine shape, which will not be elaborated here.

[0147] Please see also Figure 10 , Figure 10 This is another structural schematic diagram of the injection mold in the embodiments of this application.

[0148] It is understandable that in the injection mold 2, the arrangement of the first groove 2121a and the second groove 2221a can be the same or different. For example, the first groove 2121a may be configured as a serpentine extension on the first mating surface 2121, while the second groove 2221a may be provided with a cooling groove, or vice versa. Of course, in some cases, the first groove 2121a or the second groove 2221a may also be configured as a combination of a serpentine extension groove and a cooling groove.

[0149] In summary, the injection mold 2 of this application separates the mold base and the mold core. This allows for the creation of cooling water channels between the mold base and the mold core that are adapted to the size and shape of the molding cavity 23. These conformal cooling water channels match the surface of the molding cavity 23 formed by the mold core, reducing the manufacturing difficulty of the conformal cooling channels. Furthermore, because the conformal cooling channels match the surface of the molding cavity 23 formed by the mold core, the cooling effect at different locations of the injection molded product remains highly consistent, thereby improving temperature uniformity. Moreover, creating cooling water channels on the surface of the mold core, compared to creating channels inside the mold core, reduces the minimum thickness requirement for the mold core. This allows the mold core to maintain high mechanical strength while reducing its thickness, achieving a lightweight design while maintaining sufficient structural stability.

[0150] The injection mold provided in the embodiments of this utility model has been described in detail above. Specific examples have been used in this article to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the idea of ​​this utility model. There may be changes in the specific implementation and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An injection mold, characterized in that, include: Two mold frames, arranged opposite to each other; Two mold cores are arranged one-to-one on two mold frames and located between the two mold frames. The two mold cores are arranged opposite each other to form a molding cavity. A first conformal water channel is formed between at least one of the mold cores and the mold frame connected thereto. The first conformal water channel is provided corresponding to the molding chamber. The orthographic projection of the cooling area of ​​the first conformal water channel on the mold core covers the surface of the mold core used to construct the molding chamber. The first conformal water channel extends continuously between the mold frame and the mold core. In the thickness direction of the mold core, the mold core is provided with a first water inlet and a first water outlet. The first water inlet is connected to one end of the first conformal water channel along its extension direction, and the first water outlet is connected to the other end of the first conformal water channel along its extension direction.

2. The injection mold according to claim 1, characterized in that, The mold core comprising the first conformal water channel includes: The mating surface faces the mold frame and is attached to the mold frame. The mating surface is provided with a continuously extending groove. The mold frame covers the groove to form the first conformal water channel. The mold core is provided with the first water inlet at one end corresponding to the extension direction of the groove, and the mold core is provided with the first water outlet at the other end corresponding to the extension direction of the groove. A cavity surface, which is disposed opposite to the mating surface in the thickness direction of the mold core, is configured as at least one surface of the molding chamber.

3. The injection mold according to claim 2, characterized in that, The mold core also includes a side surface, which is connected to the mating surface. The side surface has a first water inlet and a first water outlet, which are located on the same side of the mold core. The first conformal water channel further includes a first inlet section and a first outlet section. A portion of the first inlet section extends along the thickness direction of the mold core and communicates with one end of the groove. Another portion of the first inlet section extends along a direction perpendicular to the side surface and communicates with the first inlet. A portion of the first outlet section extends along the thickness direction of the mold core and communicates with the other end of the groove. Another portion of the first outlet section extends along a direction perpendicular to the side surface and communicates with the first outlet.

4. The injection mold according to claim 1, characterized in that, The mold core comprising the first conformal water channel includes: The mating surface faces the mold frame and is provided with a continuously extending groove. The mold core is provided with a first water inlet at one end corresponding to the extension direction of the groove, and a first water outlet at the other end corresponding to the extension direction of the groove. A cavity surface, wherein the cavity surface and the mating surface are disposed opposite each other in the thickness direction of the mold core, and the cavity surface is configured as at least one surface of the molding chamber; The injection mold also includes: A heat insulation plate is disposed between the mold core and the mold frame, which have the first conformal water channel. The heat insulation plate is attached to the mating surface and covers the groove to form the first conformal water channel.

5. The injection mold according to any one of claims 1-4, characterized in that, The first conformal water channel is formed between each of the two mold cores and their respective mold frames.

6. An injection mold, characterized in that, Two mold frames, arranged opposite to each other; Two mold cores are arranged one-to-one on two mold frames and located between the two mold frames. The two mold cores are arranged opposite each other to form a molding cavity. At least one of the mold cores and the mold frame to which it is connected are formed a second conformal water channel, the second conformal water channel being disposed corresponding to the molding chamber, such that the orthographic projection of the cooling area of ​​the second conformal water channel on the mold core covers the surface of the mold core used to construct the molding chamber; The mold frame is provided with: Second water inlet; Second outlet; An internal water system, comprising a main water system and a sub-water system, wherein the main water system is connected between the second inlet and the second outlet and extends along a first direction, and the sub-water system is connected to the main water system and extends along a second direction; A partition, located in the internal water passage and extending along the second direction, is used to separate the sub-water passage and part of the main water passage on a plane perpendicular to the first direction, so that the sub-water passage forms a connected second inlet section and a second outlet section along the first direction; The mold core is provided with a cooling tank extending in the second direction on the surface facing the mold frame. The cooling tank is connected to the end of the sub-water passage away from the main water passage. The cooling tank is used to allow the coolant in the main water passage to enter the interior of the mold core through the second water inlet section and to flow back to the main water passage through the second water outlet section, so as to flow out through the second water outlet. The internal water channel and the cooling tank together form the second conformal water channel; Wherein, the first direction is perpendicular to the second direction, and the second direction is the thickness direction of the mold frame.

7. The injection mold according to claim 6, characterized in that, The partition extends partially into the cooling tank along the second direction, thereby separating the portion of the cooling tank near the mold frame.

8. The injection mold according to claim 6, characterized in that, The injection mold also includes: A heat insulation plate is disposed between the mold core and the mold frame, which are provided with the second conformal water channel. The heat insulation plate is provided with a flow hole, and the end of the sub-water channel opposite to the main water channel is connected to the cooling tank through the flow hole.

9. The injection mold according to claim 6, characterized in that, There are multiple sub-water channels, partitions, and cooling tanks. The multiple sub-water channels are connected to the main water channel, and the sub-water channels, partitions, and cooling tanks are arranged in a one-to-one correspondence.

10. The injection mold according to any one of claims 6-9, characterized in that, The two mold cores and their respective corresponding mold frames each have a second conformal water channel formed between them.

Images