Mold gate sleeve
By designing an arc-shaped mold sprue bushing and setting gaps and cooling channels, the problem of insufficient strength of the mold sprue bushing was solved, the service life was extended, the casting production efficiency was improved, and the cost was reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EXQUISITE AUTOMOTIVE SYST CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-26
AI Technical Summary
Existing mold gate bushings have low strength when meeting the cooling requirements of liquid metal, are prone to cracking or deformation, have short service life, and affect casting production efficiency and cost.
Design an arc-shaped mold sprue bushing, set a gap between the first end face and the second end face to reduce stress concentration and enhance structural strength, and set multiple cooling channels in the sprue bushing to balance the temperature of liquid metal.
It improves the service life of the mold gate bushing, reduces the replacement frequency, increases casting production efficiency, reduces production costs, and ensures casting quality.
Smart Images
Figure CN224273239U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of die casting mold technology, and in particular to a mold gate sleeve. Background Technology
[0002] In related technologies, existing mold sprue bushings have low strength when meeting the cooling requirements of liquid metal. They are prone to cracking or deformation, resulting in a short service life and frequent replacements, which affects the production efficiency of castings and increases production costs. Utility Model Content
[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a mold sprue bushing that improves the structural strength of the mold sprue bushing, reduces the probability of cracking and deformation, extends its service life, reduces the replacement frequency of the mold sprue bushing during casting production, improves casting production efficiency, and reduces production costs.
[0004] According to an embodiment of the present utility model, the mold gate sleeve includes: the mold gate sleeve is an arc-shaped structure, and along the circumference of the mold gate sleeve, the mold gate sleeve has a first end face and a second end face, the first end face and the second end face are disposed opposite to each other, and the first end face and the second end face are spaced apart to form a gap between the first end face and the second end face.
[0005] According to the embodiments of this application, by setting a gap between the first end face and the second end face, the stress concentration phenomenon of the mold sprue bushing can be reduced, which is beneficial to improving the structural strength of the mold sprue bushing, reducing the probability of cracking and deformation of the mold sprue bushing, and extending the service life of the mold sprue bushing. This can reduce the replacement frequency of the mold sprue bushing during casting production, improve the production efficiency of castings, and reduce production costs.
[0006] According to some embodiments of this utility model, the width dimension of the gap is D, which satisfies the relationship: 0.2mm≤D≤0.3mm.
[0007] According to some embodiments of the present invention, the gap includes a plurality of sequentially connected sub-gap segments, the plurality of sub-gap segments being arranged sequentially along the radial direction of the mold gate sleeve, and at least two adjacent sub-gap segments forming an included angle.
[0008] According to some embodiments of the present invention, at least two adjacent sub-gap segments form a right angle.
[0009] According to some embodiments of this utility model, there are M sub-gap segments, and at least N sub-gap segments are arranged sequentially at intervals along the radial direction of the mold gate sleeve, and the N sub-gap segments are parallel to each other, satisfying the relationship: N < M, where M and N are both positive integers.
[0010] According to some embodiments of this utility model, there are M sub-gap segments, at least P of which extend radially along the mold gate sleeve, and the P sub-gap segments are parallel to each other, satisfying the relationship: P < M, where M and P are both positive integers.
[0011] According to some embodiments of this utility model, the gap is parallel to the axial direction of the mold gate sleeve.
[0012] According to some embodiments of the present invention, the mold gate sleeve has multiple cooling channels.
[0013] According to some embodiments of the present invention, a plurality of cooling channels are arranged sequentially along the axial direction of the mold gate sleeve.
[0014] According to some embodiments of the present invention, the mold gate sleeve further forms a medium inflow channel and a medium outflow channel, wherein the medium inflow channel is connected to the channel inlet of each of the cooling channels, and the medium outflow channel is connected to the channel outlet of each of the cooling channels.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0017] Figure 1 This is a schematic diagram of a mold gate sleeve according to an embodiment of this application;
[0018] Figure 2 This is a top view of the mold gate sleeve according to an embodiment of this application;
[0019] Figure 3 yes Figure 2 A magnified view of a portion of region A in the middle;
[0020] Figure 4 This is a cross-sectional schematic diagram showing the assembly of the mold gate bushing with the mold, barrel, flow divider cone, and punch according to an embodiment of this application.
[0021] Figure label:
[0022] Mold gate sleeve 1, mounting hole 11,
[0023] First end face 10, second end face 20
[0024] Gap 30, sub-gap segment 31,
[0025] Medium inflow channel 40, medium outflow channel 50,
[0026] Mold 2,
[0027] Flow divider cone 3,
[0028] 4. Material cylinder, 41. Inlet, 42.
[0029] Punch 5. Detailed Implementation
[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0031] The following is for reference. Figures 1-4 Describes the mold gate sleeve 1 according to an embodiment of the present utility model.
[0032] According to the mold gate sleeve 1 of this utility model embodiment, as follows: Figures 1-3 As shown, the mold sprue sleeve 1 may include: the mold sprue sleeve 1 is an arc-shaped structure, and along the circumference of the mold sprue sleeve 1, the mold sprue sleeve 1 has a first end face 10 and a second end face 20, the first end face 10 and the second end face 20 are arranged opposite to each other, and the first end face 10 and the second end face 20 are spaced apart to form a gap 30 between the first end face 10 and the second end face 20.
[0033] It should be noted that existing mold sprue bushings have low strength when meeting the cooling requirements of liquid metal. The mold sprue bushings are prone to cracking or deformation, resulting in a short service life and the need for frequent replacement. This affects the production efficiency of castings and increases production costs.
[0034] Based on this, this application proposes a mold sprue sleeve 1, which can be constructed as an arc-shaped structure with a circular cross-section. The mold sprue sleeve 1 has a first end face 10 and a second end face 20, which can be located at opposite ends of the mold sprue sleeve 1 along its circumference. The first end face 10 and the second end face 20 can be arranged opposite each other along the circumference of the mold sprue sleeve 1, and can be spaced apart, with a gap 30 formed between them. The gap 30 can penetrate the mold sprue sleeve 1 along its axial direction. As an example, both the first end face 10 and the second end face 20 can extend linearly or obliquely along the axial direction of the mold sprue sleeve 1, and can be arranged parallel to each other. The shapes of the first end face 10 and the second end face 20 can be adapted to each other, so that the width of the gap 30 along the arrangement direction of the first end face 10 and the second end face 20 remains constant.
[0035] The mold sprue bushing 1 can be used in a high-pressure mold gating system. When the high-pressure mold gating system is used for die casting of metal castings, liquid metal can flow through the mold sprue bushing 1. The mold sprue bushing 1 operates in a high-temperature and high-pressure environment, and the liquid metal can be liquid aluminum alloy, liquid magnesium alloy, etc. The mold sprue bushing 1 can generate internal stress due to thermal expansion, and the mold sprue bushing 1 may deform. The mold sprue bushing 1 located near the first end face 10 and the second end face 20 can achieve local deformation. The gap 30 can provide deformation space for the mold sprue bushing 1, thereby reducing the probability of cracking and deformation of the mold sprue bushing 1.
[0036] In this embodiment of the application, by setting a gap 30 between the first end face 10 and the second end face 20, the stress concentration phenomenon of the mold sprue sleeve 1 can be reduced, which is beneficial to improving the structural strength of the mold sprue sleeve 1, reducing the probability of cracking and deformation of the mold sprue sleeve 1, and extending the service life of the mold sprue sleeve 1. This can reduce the replacement frequency of the mold sprue sleeve 1 during casting production, improve the production efficiency of casting, and reduce production costs.
[0037] As an example, such as Figure 4 As shown, the mold sprue bushing 1 can have a mounting hole 11. The mounting hole 11 can pass through the mold sprue bushing 1 along its axial direction, and the mold sprue bushing 1 can be assembled with other components of the mold 2 through the mounting hole 11. For example, when the mold sprue bushing 1 is used to produce metal castings, the mold sprue bushing 1 can be fitted onto the runner cone 3 through the mounting hole 11.
[0038] In some embodiments of this utility model, by setting a gap 30, it is beneficial to extend the service life of the mold sprue sleeve 1. The service life of the mold sprue sleeve 1 can be greater than the maintenance cycle of the mold 2 in the high-pressure mold gating system, thereby reducing the probability of cracking and deformation of the mold sprue sleeve 1 when producing castings online, which is beneficial to further improve the production efficiency of castings and reduce the use cost of the mold sprue sleeve 1.
[0039] In some embodiments of this utility model, the width dimension of the gap 30 is D, which satisfies the relationship: 0.2mm≤D≤0.3mm.
[0040] For example, the width of the gap 30 between the first end face 10 and the second end face 20 can be 0.2mm, 0.23mm, 0.26mm, 0.28mm, 0.3mm, etc. The width of the gap 30 can be within the range of 0.2mm to 0.3mm, including any value at the endpoints; any value is acceptable for the width of the gap 30 in this invention. The gap 30 between the first end face 10 and the second end face 20 can be cut by wire cutting wire, with a minimum diameter of 0.2mm. If the width of the gap 30 is less than 0.2mm, the wire cutting wire cannot cut the gap 30, resulting in a ring-shaped structure for the mold sprue sleeve 1. This can lead to stress concentration after the mold sprue sleeve 1 expands due to heat, causing it to crack or deform, thus affecting its service life. If the width of the gap 30 is greater than 0.3mm, the liquid metal flowing in the mold 2 may flow into the gap 30 between the first end face 10 and the second end face 20, affecting the quality of the finished casting. Therefore, the width of the gap 30 between the first end face 10 and the second end face 20 is in the range of 0.2mm to 0.3mm, which can not only make the gap 30 between the first end face 10 and the second end face 20 form smoothly, but also reduce the impact on the quality of the finished casting.
[0041] In some embodiments of this utility model, such as Figures 1-3 As shown, the gap 30 includes a plurality of sequentially connected sub-gap segments 31, which are arranged in sequence along the radial direction of the mold gate sleeve 1, and at least two adjacent sub-gap segments 31 form an included angle.
[0042] The gap 30 may include multiple sub-gap segments 31, which may be connected sequentially. Each sub-gap segment 31 may penetrate the mold sprue sleeve 1 along its axial direction, and all sub-gap segments 31 may have the same width. The multiple sub-gap segments 31 may be arranged sequentially along the radial direction of the mold sprue sleeve 1. At least two adjacent sub-gap segments 31 may be bent and connected, forming an included angle between them. This included angle may be an acute angle, a right angle, or an obtuse angle, thus making the gap 30 non-linear. This reduces the probability of liquid metal flowing radially through the gap 30 to the outside of the mold sprue sleeve 1, further reducing the probability of affecting the finished product quality of the casting.
[0043] It should be noted that, along the radial direction of the mold gate sleeve 1, the side away from the center of the mold gate sleeve 1 is the outer side of the mold gate sleeve 1.
[0044] In some embodiments of this utility model, such as Figure 3 As shown, at least two adjacent sub-gap segments 31 form a right angle.
[0045] At least two adjacent sub-gap segments 31 can form a right angle, which can further impede the flow of liquid metal within the gap 30 and further reduce the probability of liquid metal flowing radially through the gap 30 to the outside of the mold sprue sleeve 1. Furthermore, by setting at least two adjacent sub-gap segments 31 to form a right angle, the shape of the gap 30 is simplified, reducing the processing difficulty of the gap 30 and facilitating the production of the mold sprue sleeve 1. This application uses the example of any two adjacent sub-gap segments 31 forming an included angle. A portion of the sub-gap segments 31 can extend along a first direction, and another portion can extend along a second direction. The first direction can be perpendicular to the second direction, and one of the first and second directions can be parallel to the radial direction of the mold sprue sleeve 1.
[0046] In some embodiments of this utility model, there are M sub-gap segments 31, and at least N sub-gap segments 31 are arranged sequentially at intervals along the radial direction of the mold gate sleeve 1, and the N sub-gap segments 31 are parallel to each other, satisfying the relationship: N < M, where M and N are both positive integers.
[0047] There can be M sub-gap segments 31, which are connected sequentially. At least N sub-gap segments 31 can be arranged sequentially along the radial direction of the mold sprue sleeve 1. The at least N sub-gap segments 31 can be spaced apart, and the N sub-gap segments 31 can be parallel to each other, thereby further simplifying the shape of the gap 30 and further reducing the processing difficulty of the gap 30. The extension direction of the N sub-gap segments 31 can form an angle with the radial direction of the mold sprue sleeve 1. The angle can be one of an acute angle, a right angle, or an obtuse angle. Alternatively, the extension direction of the N sub-gap segments 31 can be parallel to the radial direction of the mold sprue sleeve 1, and all N sub-gap segments 31 can extend along the radial direction of the mold sprue sleeve 1. M and N are both used to describe the number of sub-gap segments 31. M and N are both positive integers and satisfy the relationship: N < M. The extension direction of at least one of the multiple sub-gap segments 31 other than the N sub-gap segments 31 in the M sub-gap segments 31 can form an angle with the extension direction of the N sub-gap segments 31, thereby further realizing the effect of constructing the gap 30 as a non-linear type. This is beneficial to further hinder the flow of liquid metal in the gap 30 and further reduce the probability of liquid metal flowing through the gap 30 flow channel to the outside of the mold gate sleeve 1 along the radial direction of the mold gate sleeve 1.
[0048] In some embodiments of this utility model, there are M sub-gap segments 31, and at least P sub-gap segments 31 extend radially along the mold gate sleeve 1, and the P sub-gap segments 31 are parallel to each other, satisfying the relationship: P < M, where M and P are both positive integers.
[0049] There can be M sub-gap segments 31, which are connected sequentially. At least P sub-gap segments 31 can extend radially along the mold sprue sleeve 1, and the P sub-gap segments 31 are parallel to each other. The P sub-gap segments 31 are arranged sequentially along the radial direction of the mold sprue sleeve 1, so that the mounting hole 11 of the mold sprue sleeve 1 can communicate with the outside of the mold sprue sleeve 1. M and P are used to describe the number of sub-gap segments 31, and M and P are both positive integers, satisfying the relationship: P < M. At least one of the multiple sub-gap segments 31 other than the P sub-gap segments 31 can have an angle with the extension direction of the P sub-gap segments 31, thereby further realizing the effect of constructing the gap 30 as a non-linear shape, which is beneficial to further hinder the flow of liquid metal in the gap 30, and further reduce the probability of liquid metal flowing through the gap 30 channel to the outside of the mold sprue sleeve 1 radially.
[0050] In some embodiments of this utility model, the gap 30 and the axial direction of the mold gate sleeve 1 are parallel.
[0051] The gap 30 can be parallel to the axial direction of the mold sprue bushing 1, and both the first end face 10 and the second end face 20 can extend along the axial direction of the mold sprue bushing 1. When the mold sprue bushing 1 is heated and expands, generating internal stress, the gap 30 can be set to be parallel to the axial direction of the mold sprue bushing 1. This helps to ensure that the internal stress can be evenly transmitted on the mold sprue bushing 1 near the gap 30, further reducing stress concentration on the mold sprue bushing 1, further reducing the probability of cracking and deformation of the mold sprue bushing 1, and further extending the service life of the mold sprue bushing 1. This further reduces the replacement frequency of the mold sprue bushing 1 during casting production, further improving casting production efficiency and further reducing production costs.
[0052] In some embodiments of this utility model, the mold gate sleeve 1 is formed with multiple cooling channels.
[0053] The mold sprue sleeve 1 can form multiple cooling channels, which can be interconnected or disconnected. This application uses interconnected cooling channels as an example. Heat exchange media can flow within each of the multiple cooling channels, exchanging heat with the liquid metal flowing through the mold sprue sleeve 1 to balance the temperature of the liquid metal, allowing for normal production of the metal casting. The mold sprue sleeve 1 can be applied to a high-pressure mold gating system. Liquid metal enters the mold cavity through the mold sprue sleeve 1. During the production of the metal casting, the metal casting cake is located at the mold sprue sleeve 1, which is the thickest part of the metal casting. Therefore, the mold sprue sleeve 1 requires stronger cooling. By setting the mold sprue sleeve 1 to form multiple cooling channels, the metal casting cake can be completely cooled within the specified metal casting production time, reducing the probability of the cake not being completely solidified when the mold is opened. This improves the reliability of the mold sprue sleeve 1, reduces the casting time of the metal casting, and further improves the production efficiency of the metal casting.
[0054] In some embodiments of this utility model, multiple cooling channels are arranged sequentially along the axial direction of the mold gate sleeve 1.
[0055] Multiple cooling channels can be arranged sequentially along the axial direction of the mold sprue sleeve 1. Each cooling channel can extend circumferentially along the mold sprue sleeve 1, thereby increasing the heat exchange area between the heat exchange medium and the liquid metal in the multiple cooling channels, which is beneficial to further enhance the cooling effect of the mold sprue sleeve 1 on the liquid metal.
[0056] In some embodiments of this utility model, such as Figure 2As shown, the mold gate sleeve 1 also forms a medium inflow channel 40 and a medium outflow channel 50. The medium inflow channel 40 is connected to the channel inlet of each cooling channel, and the medium outflow channel 50 is connected to the channel outlet of each cooling channel.
[0057] The mold sprue bushing 1 also forms a medium inflow channel 40 and a medium outflow channel 50. The heat exchange medium can flow into the mold sprue bushing 1 through the medium inflow channel 40 and out of the mold sprue bushing 1 through the medium outflow channel 50. The medium inflow channel 40 can be connected to the channel inlet of each cooling channel, and the medium outflow channel 50 can be connected to the channel outlet of each cooling channel, thereby connecting multiple cooling channels. The heat exchange medium can flow into the mold sprue bushing 1 through the medium inflow channel 40, flow into the corresponding cooling channel through the channel inlet of multiple cooling channels, flow out of the corresponding cooling channel through the channel outlet of multiple cooling channels, and flow out of the mold sprue bushing 1 through the medium outflow channel 50. This achieves the effect of circulating the heat exchange medium in the mold sprue bushing 1, which is beneficial to further realize the heat exchange effect between the heat exchange medium and the liquid metal and further reduce the temperature of the liquid metal.
[0058] As an example, such as Figure 4 As shown, the mold sprue sleeve 1 can be applied to a high-pressure mold gating system. The high-pressure mold gating system can include a mold 2, a mold sprue sleeve 1, a runner cone 3, a barrel 4, and a punch 5. The barrel 4 can have a feed port 41 and a sprue 42. One end of the sprue 42 can be connected to the mold sprue sleeve 1, and the other end of the sprue 42 can be equipped with a punch 5. The mold sprue sleeve 1 can be fitted onto the runner cone 3. The mold sprue sleeve 1 can also be assembled with the mold 2. The runner cone 3 and the mold sprue sleeve 1 can be located between the end of the sprue 42 and the cavity inlet of the mold 2. Liquid metal can flow through the mold sprue sleeve 1 and then into the cavity of the mold 2. The mold sprue bushing 1 and the flow divider cone 3 can work together. The flow divider cone 3 can divert the liquid metal, and the mold sprue bushing 1 can guide the liquid metal. The mold sprue bushing 1 and the flow divider cone 3 can allow the liquid metal to enter the cavity quickly in a laminar flow form under high pressure, which can reduce the probability of turbulence and gas entrapment in the liquid metal. This is beneficial to reducing the probability of porosity in metal castings. In addition, the mold sprue bushing 1 can cool the liquid metal flowing through it and balance the temperature of the liquid metal, so that the metal castings can be produced normally.
[0059] During the production of metal castings, the punch 5 can avoid the feed inlet 41, allowing liquid metal to be added to the cylinder 4 through the feed inlet 41. When the liquid metal fills the sprue 42, the punch 5 moves a certain distance toward the mold gate sleeve 1, causing a portion of the liquid metal in the sprue 42 to flow into the cavity. At this point, the movement speed of the punch 5 is switched to high speed, allowing the punch 5 to quickly press the remaining liquid metal in the sprue 42 into the cavity. The moment the liquid metal fills the cavity, the high-pressure mold gating system applies high pressure to the liquid metal, forming the metal casting.
[0060] Other components and operations of the mold gate sleeve 1 according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.
[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0062] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A mold sprue bushing, characterized in that, Comprising: The mold sprue bushing (1) has an arc-shaped structure. Along the circumferential direction of the mold sprue bushing (1), the mold sprue bushing (1) has a first end face (10) and a second end face (20). The first end face (10) and the second end face (20) are arranged oppositely, and the first end face (10) and the second end face (20) are spaced apart to form a gap (30) between the first end face (10) and the second end face (20).
2. The mold sprue bushing according to claim 1, wherein The width dimension of the gap (30) is D, satisfying the relational expression: 0.2 mm ≤ D ≤ 0.3 mm.
3. The mold gate bushing according to claim 2, wherein, The gap (30) includes a plurality of successively connected sub-gap segments (31). The plurality of sub-gap segments (31) are arranged in sequence along the radial direction of the mold sprue bushing (1), and an included angle is formed between at least two adjacent sub-gap segments (31).
4. The mold sprue bushing according to claim 3, wherein A right angle is formed between at least two adjacent sub-gap segments (31).
5. The mold sprue bushing according to claim 3, wherein The number of the sub-gap segments (31) is M. At least N sub-gap segments (31) are arranged at intervals in sequence along the radial direction of the mold sprue bushing (1), and the N sub-gap segments (31) are parallel to each other, satisfying the relational expression: N < M, where M and N are both positive integers.
6. The mold gate bushing according to claim 3, wherein The number of the sub-gap segments (31) is M. At least P sub-gap segments (31) extend along the radial direction of the mold sprue bushing (1), and the P sub-gap segments (31) are parallel to each other, satisfying the relational expression: P < M, where M and P are both positive integers.
7. The mold gate bushing according to claim 1, wherein The gap (30) is parallel to the axial direction of the mold sprue bushing (1).
8. The mold gate bushing according to any one of claims 1-7, characterized in that The mold sprue bushing (1) is formed with a plurality of cooling channels.
9. The mold gate bushing according to claim 8, wherein The plurality of cooling channels are arranged in sequence along the axial direction of the mold sprue bushing (1).
10. The mold gate bushing according to claim 8, wherein, The mold sprue bushing (1) is further formed with a medium inflow channel (40) and a medium outflow channel (50). The medium inflow channel (40) is communicated with the channel inlet of each cooling channel, and the medium outflow channel (50) is communicated with the channel outlet of each cooling channel.