Gradient cooling structure of high-thermal-conductivity alloy casting mold

Abstract

The utility model discloses a gradient cooling structure of a high-thermal-conductivity alloy casting mold, which comprises a heat conduction cover vertically sliding on the outer side wall of a movable mold, liquid storage ring holes arranged in a stepped manner are formed in the heat conduction cover, and a preset included angle is kept between the stock solution accumulation direction in a forming cavity and the distribution direction of the liquid storage ring holes. And a protective cover which is positioned on the outer side of the heat conducting cover and is used for forming an air passage is fixedly mounted on the fixed mold. According to the gradient cooling structure of the high-thermal-conductivity alloy casting mold, heat of raw liquid is sequentially transmitted to the liquid storage ring holes from near to far to be used for being matched with the forming cavity with the heat gradually increased, so that the tubular alloy side wall before forming can evenly dissipate the heat, the forming efficiency of an alloy pipe is guaranteed, and the service life of the alloy pipe is prolonged. And then the airflow blowing direction diffuses from top to bottom by utilizing the airflow pumping capacity of the heat conduction cover slipping in the cavity, so that the purpose is to bear the contact type heat absorption of the liquid storage ring hole, and the efficient cooling and heat dissipation functions of the alloy pipe before forming are realized.

Description

Technical Field

[0001] This utility model relates to the field of mold cooling technology, and more specifically to a gradient cooling structure for high thermal conductivity alloy casting molds. Background Technology

[0002] In order to ensure the overall heat dissipation and cooling efficiency during the casting process of high thermal conductivity alloys through molds, channels are usually opened on the molds and coolant is added to the channels to absorb the excess heat generated during molding.

[0003] According to the publication (announcement) number: CN110000337B, the publication (announcement) date: 2024-10-11, an aluminum alloy motor housing casting mold is disclosed.

[0004] In the prior art, including the aforementioned patent, during the casting process of tubular alloys, the high-temperature raw liquid usually flows and diffuses in the mold and molding chamber. In order to ensure the cooling efficiency of the raw liquid after molding, the entire mold is also made of metal. However, since the flow of the raw liquid involves a diffusion process, the cooling before molding begins when it comes into contact with the mold. The coolant in the channel directly absorbs the heat transferred from the metal, resulting in uneven surface cooling of the tubular alloy before molding. For some pressure molds, the pressure can also cause changes in the flow of the raw liquid, making the cooling area even more uncontrollable, and the molding of the tubular alloy cannot be well guaranteed. Utility Model Content

[0005] The purpose of this invention is to provide a gradient cooling structure for high thermal conductivity alloy casting molds, aiming to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gradient cooling structure for a high thermal conductivity alloy casting mold includes a fixed mold with a moving mold and a forming cavity between them, and a heat-conducting cover that slides vertically on the outer wall of the moving mold. The heat-conducting cover has stepped liquid storage ring holes. The direction of the original liquid accumulation in the forming cavity maintains a predetermined angle with the distribution direction of the multiple liquid storage ring holes.

[0008] The fixed mold is also fixedly installed with a protective cover located outside the heat-conducting cover and used to form an air passage. When the heat-conducting cover is moved, the air passage guides the gas in the same direction as the original liquid accumulation.

[0009] Preferably, a channel annular hole with a width of half the width is formed between adjacent liquid storage annular holes.

[0010] Preferably, the heat-conducting cover has circumferentially arranged liquid inlets, and a plug that abuts against the fixed mold is fixedly installed in the liquid inlets.

[0011] Preferably, the heat-conducting cover has a drain port on its side wall that is arranged opposite to the liquid replenishment port and connected to the liquid storage ring hole.

[0012] Preferably, the heat-conducting cover port is further provided with multiple heat-insulating channels located between adjacent liquid replenishment ports.

[0013] Preferably, the protective cover has multiple notches, and an elastic plate that maintains a predetermined gap with the notch is fixedly installed in the notch.

[0014] Preferably, the inner wall of the elastic plate is provided with an inclined surface, and a slider that slides with the inclined surface to adjust the tilt angle of the elastic plate is fixedly installed on the outer wall of the heat conduction cover.

[0015] Preferably, a base is also fixedly installed on the fixed mold, and a hydraulic rod for guiding the sliding of the heat shield is fixedly installed on the base.

[0016] Preferably, the stopper is a rubber stopper.

[0017] Preferably, the elastic plate is an arc-shaped elastic metal sheet.

[0018] In the above technical solution, the gradient cooling structure of the high thermal conductivity alloy casting mold provided by this utility model has the following beneficial effects: the liquid storage ring hole closest to the bottom of the forming cavity can preferentially absorb the heat of the raw liquid accumulated below, and during the liquid injection process, the heat is transferred from near to far to multiple liquid storage ring holes in sequence to adapt to the gradually increasing heat of the forming cavity, so that the tubular alloy sidewall before forming can dissipate heat evenly, ensuring the forming efficiency of the alloy tube. Then, the airflow pumping capability of the heat-conducting cover sliding in the cavity allows the outer wall of the fixed mold to be cooled by natural air blowing, realizing the heat dissipation function of the forming cavity. Moreover, the airflow blowing direction is diffused from top to bottom, which is used to receive the contact heat absorption of the liquid storage ring hole, thereby realizing the efficient cooling and heat dissipation function of the alloy tube before forming, and the forming efficiency of the alloy tube is higher. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the assembly of the fixed mold, moving mold, base, and heat-conducting cover provided for an embodiment of the present utility model;

[0021] Figure 2 A side sectional view of the assembly of the fixed mold, moving mold, base, and heat-conducting cover provided in an embodiment of this utility model;

[0022] Figure 3 for Figure 2 Enlarged view of point A;

[0023] Figure 4 for Figure 2 Enlarged view of point B;

[0024] Figure 5 An exploded view of the fixed mold, moving mold, base, and heat-conducting cover provided for an embodiment of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Fixed mold; 2. Moving mold; 20. Molding cavity; 21. Notch; 3. Base; 31. Hydraulic rod; 4. Heat conduction cover; 41. Liquid storage ring hole; 42. Channel ring hole; 43. Liquid replenishment port; 44. Plug; 45. Insulation channel; 46. Slider; 47. Drain port; 5. Protective cover; 51. Air channel; 52. Elastic plate. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-5 As shown, a gradient cooling structure for a high thermal conductivity alloy casting mold includes a fixed mold 1 with a moving mold 2, and a forming cavity 20 is formed between the two. It also includes a heat-conducting cover 4 that slides vertically on the outer wall of the moving mold 2. The heat-conducting cover 4 has stepped liquid storage ring holes 41. The direction of the original liquid accumulation in the forming cavity 20 maintains a predetermined angle with the distribution direction of the multiple liquid storage ring holes 41.

[0029] A protective cover 5 is also fixedly installed on the fixed mold 1, located outside the heat conduction cover 4 and used to form the air passage 51. When the heat conduction cover 4 is moved, the air passage 51 is aligned with the original liquid accumulation direction to guide the gas.

[0030] Specifically, the vertical connection between the moving mold 2 and the fixed mold 1, as well as the molding cavity 20, are all existing technologies and will not be described in detail here. The heat-conducting cover 4 is made of heat-conducting metal and uses the same material as the mold, which is also existing technology and will not be described in detail here.

[0031] Furthermore, the moving mold 2 has a notch 21 for contact with air for cooling, ensuring the heat dissipation effect of the mold base. The multiple liquid storage ring holes 41 are arranged in an inverted truncated shape so that the lowest liquid storage ring hole 41 can absorb the heat of the injected liquid first.

[0032] Furthermore, the outer wall of the fixed mold 1 is provided with a recess for the sliding of the heat conduction cover 4, and the end of the recess is covered by an annular protective cover 5, so that the heat conduction cover 4 is embedded in the cavity between the recess and the protective cover 5, and negative pressure is created in the cavity during the movement of the heat conduction cover 4.

[0033] As the raw liquid enters the molding cavity 20 and accumulates from bottom to top, heat is absorbed and transferred through the inner wall of the heat-conducting cover 4. Therefore, the liquid storage ring hole 41, which is closest to the molding cavity 20 at the bottom, can preferentially absorb the heat of the raw liquid accumulated below. During the injection process, heat is transferred sequentially from near to far to multiple liquid storage ring holes 41 to adapt to the gradually increasing heat in the molding cavity 20. This ensures that the tubular alloy sidewall can dissipate heat evenly before molding, guaranteeing the molding efficiency of the alloy tube. When the heat is absorbed by the heat-conducting cover 4 (the heat absorption time required for a fixed-size alloy tube is fixed, and a controller can be used (electrical connection and control method are...), the heat absorption time is...). (Existing technology, which will not be elaborated here) is used to guide the heat-conducting cover 4) to detach from the fixed mold 1 at a time. The heat-conducting cover 4 is detached from the cavity and the airflow is pumped into the air passage 51 by sliding in the cavity. This allows the outer wall of the fixed mold 1 to be cooled by natural air and cooled by airflow. This achieves the heat dissipation function of the forming cavity 20. The airflow direction is diffused from top to bottom. The purpose is to receive the contact heat absorption of the liquid storage ring hole 41 (the higher the original liquid is, the greater the heat that has not been completely absorbed. At this time, the airflow is reversed (from top to bottom) to provide further heat dissipation treatment). This achieves the efficient cooling and heat dissipation function of the alloy tube before forming, and the forming efficiency of the alloy tube is higher.

[0034] As a further embodiment of this utility model, a channel annular hole 42 with a width of half that is provided between adjacent liquid storage annular holes 41.

[0035] Multiple liquid storage ring holes 41 are connected by channel ring holes 42 that are also distributed in an inverted stepped gradient shape, which also ensures the liquid heat transfer effect between adjacent liquid storage ring holes 41, that is, the liquid delivery volume is guaranteed.

[0036] As another embodiment provided by this utility model, the heat-conducting cover 4 is provided with a circumferentially arranged liquid inlet 43, and a plug 44 that abuts against the mold 1 is fixedly installed in the liquid inlet 43.

[0037] The coolant lost in the liquid storage ring hole 41 is replenished by connecting the liquid replenishment port 43 to the uppermost liquid storage ring hole 41. The heat conduction cover 4, which moves up to the termination position, will press the plug 44 against the recessed side wall on the fixed mold 1 to provide a pressing effect on the plug 44 and prevent the liquid from leaking due to increased pressure caused by heating.

[0038] As another embodiment further provided by this utility model, a drain port 47 is provided on the side wall of the heat conduction cover 4, which is arranged opposite to the liquid replenishment port 43 and connected to the liquid storage ring hole 41.

[0039] Specifically, a threaded plug is installed in the drain port 47, and the end of the plug is fitted with a groove for a knob using a special tool (such as a screwdriver or polygonal wrench commonly found on the market).

[0040] The plug connected to the drain port 47 by threads ensures the sealing effect at the bottom of the reservoir ring hole 41. It can be removed when the coolant reaches the cleaning and replacement cycle (this cycle is longer than the coolant wear cycle). At the same time, the downwardly oriented drain port 47 makes it easier to replace and empty the coolant.

[0041] As another embodiment of this utility model, the heat-conducting cover 4 port is also provided with a plurality of heat-insulating channels 45 located between adjacent liquid replenishment ports 43.

[0042] Specifically, an insulation material layer (the material is existing technology and will not be described in detail here) is inserted into the insulation channel 45.

[0043] By inserting insulation material into the circumferentially arranged insulation channels 45, the outermost part of the heat-conducting cover 4 can have an insulation effect from the inside. The purpose is to use the heat-conducting cover 4 to absorb and store heat, and then, after the alloy tube is demolded, move the heat-conducting cover 4 upward to preheat the molding cavity 20, thereby improving resource utilization efficiency.

[0044] As another embodiment of this utility model, the protective cover 5 has multiple notches, and an elastic plate 52 that maintains a predetermined gap with the notch is fixedly installed in the notch.

[0045] The gaps on both sides of the elastic plate 52 ensure the amount of airflow pumped in, and the gradually opening gaps can increase the cooling effect on the outer wall of the fixed mold 1.

[0046] As another embodiment of this utility model, the inner wall of the elastic plate 52 is provided with an inclined surface, and a slider 46 is fixedly installed on the outer wall of the heat conduction cover 4 to slide with the inclined surface so that the tilt angle of the elastic plate 52 is adjustable.

[0047] Specifically, the cross-section of the elastic plate 52 is a right trapezoid, and the inclined surface of the trapezoid faces the outer wall of the fixed mold 1.

[0048] Multiple sliding blocks 46 move downwards and contact the elastic plate 52, opening downwards in a funnel shape to increase the size of the gap, so that the outer wall of the fixed mold 1 has a larger contact area with air, while also ensuring the amount of air blown in.

[0049] As another embodiment of this utility model, a base 3 is also fixedly installed on the fixed mold 1, and a hydraulic rod 31 for guiding the sliding of the heat-guiding cover 4 is fixedly installed on the base 3.

[0050] Specifically, the output end of the hydraulic rod 31 is detachably connected to the bottom of the heat-conducting cover 4 with bolts, and the hydraulic rod 31 is electrically connected to the controller.

[0051] The vertical movement stability of the heat-conducting cover 4 is ensured by the hydraulic rod 31, which facilitates the separation and installation of the heat-conducting cover 4 from the fixed mold 1.

[0052] As another embodiment further provided in this utility model, the stopper 44 is specifically a rubber stopper.

[0053] The rubber plug 44 provides a better seal under compression deformation.

[0054] As another embodiment further provided in this utility model, the elastic plate 52 is specifically an arc-shaped elastic metal sheet.

[0055] When the elastic plate 52 made of elastic metal is compressed, the connection position near the notch can bend and deform, ensuring the air intake of the notch.

[0056] Working principle: The raw liquid enters the molding cavity 20 and accumulates from bottom to top, so that the heat is absorbed and transferred by the inner wall of the heat-conducting cover 4. Therefore, the liquid storage ring hole 41, which is closest to the molding cavity 20 at the bottom, can preferentially absorb the heat of the raw liquid accumulated below. During the liquid injection process, the heat is transferred from near to far to multiple liquid storage ring holes 41 in sequence to adapt to the gradually increasing heat of the molding cavity 20. This allows the tubular alloy sidewall before molding to dissipate heat evenly. When the heat-conducting cover 4 has finished absorbing the heat, it detaches from the fixed mold 1 and uses the airflow pumping ability of the heat-conducting cover 4 sliding in the cavity to cool the outer wall of the fixed mold 1 by natural air. At the same time, it is also cooled by the airflow, realizing the heat dissipation function of the molding cavity 20. The airflow direction is diffused from top to bottom, which is used to receive the contact heat absorption of the liquid storage ring hole 41.

[0057] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A gradient cooling structure of a high thermal conductivity alloy casting mold comprising a fixed mold (1) provided with a movable mold (2) and a molding cavity (20) formed between the fixed mold (1) and the movable mold (2), characterized in that, It also includes a heat-conducting cover (4) that slides vertically on the outer wall of the moving mold (2). The heat-conducting cover (4) has stepped liquid storage ring holes (41) in it. The direction of the original liquid accumulation in the molding cavity (20) and the distribution direction of the multiple liquid storage ring holes (41) maintain a predetermined angle. The fixed mold (1) is also fixedly installed with a protective cover (5) located outside the heat-conducting cover (4) and used to form an air passage (51). When the heat-conducting cover (4) is moved, the air passage (51) is directed to guide the gas in the same direction as the original liquid accumulation.

2. The high thermal conductivity alloy cast mold gradient cooling structure according to claim 1, characterized by, A channel annular hole (42) with a width of half that of the adjacent liquid storage annular hole (41) is provided.

3. The high thermal conductivity alloy cast mold gradient cooling structure according to claim 1, characterized by, The heat-conducting cover (4) has a circumferentially arranged liquid inlet (43), and a plug (44) that abuts against the fixed mold (1) is fixedly installed in the liquid inlet (43).

4. The high thermal conductivity alloy cast mold gradient cooling structure according to claim 3, characterized by, The heat-conducting cover (4) has a drain port (47) on its side wall that is opposite to the liquid replenishment port (43) and connected to the liquid storage ring hole (41).

5. The high thermal conductivity alloy cast mold gradient cooling structure according to claim 3, characterized by, The heat-conducting cover (4) is also provided with multiple heat-insulating channels (45) between adjacent liquid replenishment ports (43).

6. The high thermal conductivity alloy cast mold gradient cooling structure according to claim 3, characterized by, The protective cover (5) has multiple notches, and an elastic plate (52) is fixedly installed in the notch to maintain a predetermined gap with it.

7. The high thermal conductivity alloy cast mold gradient cooling structure according to claim 6, characterized by, The inner wall of the elastic plate (52) is provided with an inclined surface, and a slider (46) is fixedly installed on the outer wall of the heat conduction cover (4) to slide with the inclined surface so that the tilt angle of the elastic plate (52) can be adjusted.

8. The high thermal conductivity alloy cast mold gradient cooling structure according to claim 6, characterized by, A base (3) is also fixedly installed on the fixed mold (1), and a hydraulic rod (31) for guiding the sliding of the heat-guiding cover (4) is fixedly installed on the base (3).

9. The high thermal conductivity alloy cast mold gradient cooling structure according to claim 6, characterized by, The stopper (44) is specifically a rubber stopper.

10. The gradient cooling structure for high thermal conductivity alloy casting molds according to claim 6, characterized in that, The elastic plate (52) is specifically an arc-shaped elastic metal sheet.

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