Aluminum alloy integrated molding casting mold for air suspension air chamber

Abstract

The utility model discloses an aluminum alloy integrated molding casting mold for an air suspension air chamber. The aluminum alloy integrated molding casting mold comprises an upper mold, a lower mold and a sand core, the lower mold and the upper mold are oppositely arranged, a cavity is formed after the lower mold and the upper mold are closed, and the lower mold is provided with a main pouring gate communicated with the cavity; the sand core is arranged in the cavity, a channel for molten liquid to pass through is formed in the sand core, and at least one first branch pouring gate is arranged at an opening, far away from one end of the main pouring gate, of the channel. The casting mold adopts an improved feeding structure, so that the probability of generating defects in the cooling process of a casting can be reduced, and the yield is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold casting, and in particular relates to an air suspension air chamber aluminum alloy integrated molding casting mold capable of ensuring the quality of castings. Background Art

[0002] Air suspension is a system that improves the driving experience of the vehicle. According to different road conditions and the signal of the distance sensor, the driving computer determines the change in the height of the vehicle body, and controls the air compressor and the exhaust valve to automatically compress or extend the spring, thereby lowering or raising the ground clearance of the chassis to increase the stability of the high-speed vehicle body or the passability of complex road conditions. There is a large difference between the minimum wall thickness and the maximum wall thickness of the air suspension shell casting. During the process of casting and solidification, if the casting does not have a large and sufficient flow channel to compensate for its shrinkage, there will be casting defects inside the product after it is produced. And after the hot channel completes the product shrinkage compensation, it needs to be cooled quickly to shorten the casting cycle of the product to save costs.

[0003] Therefore, in view of the above technical problems, it is necessary to provide an air suspension air chamber aluminum alloy integrated molding casting mold.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide an aluminum alloy integrated casting mold for an air suspension air chamber, which has an improved shrinkage compensation effect to reduce the probability of defects in castings.

[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides an air suspension air chamber aluminum alloy integrated casting mold, comprising an upper mold, a lower mold and a sand core. The lower mold is arranged opposite to the upper mold, and a cavity is formed after the lower mold and the upper mold are combined, and the lower mold is provided with a main runner connected to the cavity; the sand core is arranged in the cavity, and the sand core forms a channel for the molten liquid to pass through, and the channel is provided with at least one first branch runner at the opening away from one end of the main runner.

[0007] In one or more embodiments of the present invention, at least one second branch runner is provided in the mold cavity, and the second branch runner is formed between the bottom of the sand core and the lower mold.

[0008] In one or more embodiments of the present invention, three first branch runners are provided on the sand core, and the first branch runners have the same angle with each other, and / or three second branch runners are provided in the cavity, and the second branch runners have the same angle with each other.

[0009] In one or more embodiments of the present invention, the air suspension chamber aluminum alloy integrated casting mold also includes multiple cooling components, the upper mold is provided with multiple cooling channels, the cooling components are respectively inserted into the cooling channels, and cooling gas or liquid is transported into the cooling channels.

[0010] In one or more embodiments of the present invention, the cooling channel includes a first channel formed at the center of the cavity, and a plurality of second channels surrounding the cavity, the cooling component located in the first channel transports cooling liquid into the first channel, and the cooling component located in the second channel transports cooling gas into the second channel.

[0011] In one or more embodiments of the present invention, the depth of the first channel is greater than the depth of the second channel.

[0012] In one or more embodiments of the present invention, the cooling assembly includes a main body, and a first rod and a second rod connected to the main body. The main body is provided with an input port and an output port respectively connected to the first rod and the second rod.

[0013] In one or more embodiments of the present invention, the first rod body extends to the bottom of the cooling channel, and the length of the second rod body is smaller than that of the first rod body.

[0014] In one or more embodiments of the present invention, the second rod body is sleeved outside the first rod body.

[0015] In one or more embodiments of the utility model, the air suspension chamber aluminum alloy integrated casting mold further includes a fixing plate and fixing bolts, and fixing holes for installing fixing bolts are respectively opened on the side walls of the upper mold and the lower mold.

[0016] Compared with the prior art, the air suspension chamber aluminum alloy integrated casting mold of the utility model has an improved shrinkage compensation mechanism, which can reduce the probability of defects in the cooling process of the pearl river to improve the yield rate. Secondly, the mold adopts a cooling method combining air cooling and liquid cooling to make the temperature field of the entire mold controllable, so as to increase the cooling speed of the casting, reduce the cooling and solidification time, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of an aluminum alloy integrated casting mold for an air suspension air chamber in one embodiment of the utility model;

[0019] Figure 2 It is a partial schematic diagram of an aluminum alloy integrated casting mold for an air suspension air chamber in one embodiment of the utility model;

[0020] Figure 3 This is a partial disassembled view of an aluminum alloy integrated casting mold for an air suspension air chamber in one embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of a lower mold in one embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of a sand core in one embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of a cooling assembly in one embodiment of the utility model.

[0024] Description of main reference numerals:

[0025] 100-air suspension air chamber aluminum alloy integrated molding casting mold, 10-upper mold, 11-cooling channel, 111-first channel, 112-second channel, 20-lower mold, 21-main runner, 22-second branch runner, 30-cooling assembly, 31-main body, 32-first rod body, 33-second rod body, 34-input port, 35-output port, 40-sand core, 41-first branch runner. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0027] like Figure 1-6As shown, the air suspension air chamber aluminum alloy integrated molding casting mold 100 in one embodiment of the utility model includes an upper mold 10, a lower mold 20 and a sand core 40. After the upper mold 10 and the lower mold 20 are molded together, a cavity is formed between the two. The final casting is formed by pouring molten metal into the cavity and waiting for it to cool. The sand core 40 is arranged in the cavity for molding the internal structure of the casting. Due to thermal expansion and contraction, if there is no shrinkage compensation during the cooling process of the casting, defects will be formed in the casting, affecting the normal use in the later stage. Therefore, in this embodiment, the main runner 21 is opened at the bottom of the lower mold 20, and a channel for the flow of molten metal is opened on the sand core 40. At the same time, a first branch runner 41 is opened on the top of the sand core 40. The molten metal flows upward through the inside of the sand core 40 and flows outward through the first branch runner 41 for shrinkage compensation. The first branch runner 41 can compensate for the shrinkage of the inner center area of ​​the casting to reduce the probability of defects during the cooling process of the casting and improve the product yield.

[0028] Preferably, Figure 5 As shown, three first branch runners 41 are provided, and the angles between them are the same, so as to provide more shrinkage-feeding channels and increase shrinkage-feeding positions, thereby further reducing the probability of defects.

[0029] In this embodiment, the lower mold 20 is further provided with a second runner 22, which is located at the bottom of the cavity and is arranged between the lower mold 20 and the sand core 40. Since the second runner 22 is located at the thickest part of the casting, similarly, Figure 4 As shown, three second branch runners 22 are provided on the lower mold 20 .

[0030] It is easy to imagine that the number of the first branch runners 41 and / or the second branch runners 22 may also be set to other numbers according to actual conditions, and this embodiment does not limit this.

[0031] like Figure 1 , 2 As shown in , 3, the air suspension chamber aluminum alloy integrated molding casting mold 100 also includes a plurality of cooling components 30. A plurality of cooling channels 11 are opened on the upper mold 10. The cooling components 30 are selectively inserted into the cooling channel 11, and the entire mold is cooled by injecting cooling gas or gas into the cooling channel 11.

[0032] In this embodiment, the cooling component 30 can use cooling gas or liquid. Due to different cooling effects, different temperature control effects can be achieved by injecting different cooling media into different cooling channels 11 to create a controllable temperature field, quickly cool the casting, shorten the casting cycle of the product, reduce costs, and have high flexibility.

[0033] Specifically, the cooling channel 11 includes a first channel 111 extending to the center of the cavity, and a plurality of second channels 112 surrounding the periphery of the cavity. The first channel 111 is located at the position where the heat of the entire casting is most concentrated, so the cooling component 30 located in the first channel 111 is used to transport coolant to improve the cooling effect. The temperature near the second channel 112 is relatively low, so the cooling component 30 in the second channel 112 is used to transport cooling gas. By combining liquid cooling and air cooling, the temperature field of the entire mold can be controlled, the casting can be quickly cooled, the casting cycle can be shortened, the production efficiency can be improved, and the cost can be reduced.

[0034] Preferably, according to the casting shape corresponding to the mold, the first channel 111 is longer than the second channel 112, and extends to a deeper position in the cavity to fully utilize the advantages of the better liquid cooling effect to cool the position with the highest casting temperature to further improve the cooling effect.

[0035] In this embodiment, the specific structure of the cooling assembly 30 is as follows: Figure 6 As shown, it includes a main body 31, and a hollow first rod body 32 and a second rod body 33 extending from the main body 31, and an input port 34 and an output port 35 are arranged on the main body 31, the input port 34 is connected to the first rod body 32 to form an input channel, and the output port 35 is connected to the second rod body 33 to form an output channel, and the two channels are independent of each other. The cooling medium flows in from the input port 34, flows into the cooling channel 11 through the first rod body 32, and flows out from the output port 35 through the second rod body 33 after completing the heat exchange, thereby completing the cooling operation.

[0036] Preferably, the second rod body 33 is sleeved outside the first rod body 32 and is shorter than the first rod body 32. Therefore, the cooling medium has a bottom-to-top movement process after entering the cooling channel 11. It first reaches the core position of the upper mold 10 with the highest temperature, that is, the bottom of the cooling channel 11, so it can take away more heat and improve the cooling effect.

[0037] During the manufacturing process, after the molten metal is injected, the upper mold 10 and the lower mold 20 need to be fixed to prevent the molten metal from flowing out. Figure 3 As shown, fixing holes are respectively opened on the side walls of the upper mold 10 and the lower mold 20, and the fixing plates 52 are fixed to the side walls of the upper mold 10 and the lower mold 20 by fixing bolts 51 to complete the fixation.

[0038] The air suspension chamber aluminum alloy integrated casting mold 100 also includes an ejection mechanism for ejecting the casting after the casting is cooled. In addition, the air suspension chamber aluminum alloy integrated casting mold 100 integrates two sets of upper molds 10 and lower molds 20 on the same bottom plate, so that two sets of shells can be produced at the same time, with high production efficiency.

[0039] The following is a further description of the air suspension chamber aluminum alloy integrated molding casting mold 100 provided by the utility model in combination with a specific usage scenario. When making the shell, the upper mold 10 and the lower mold 20 are first molded together and fixed with a fixing plate 52, and then the ZL101A aluminum liquid is injected through the main runner 21, and the coolant and compressed air are respectively injected into the first channel 111 and the second channel 112 to cool the air suspension chamber aluminum alloy integrated molding casting mold 100. After the casting is cooled, the fixing plate 52 is removed and the upper mold 10 and the lower mold 20 are separated. After the molded casting is ejected using the ejection mechanism, the upper mold 10 and the lower mold 20 are fixed using the fixing plate 52 and wait for the next casting operation.

[0040] The air suspension air chamber aluminum alloy integrated molding casting mold 100 after the above optimized design has no leakage during the product final inspection and airtightness test, and the product qualification rate is 97%.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An aluminum alloy integrated casting mold for an air suspension air chamber, characterized in that: include: upper mold; A lower mold is arranged opposite to the upper mold, and a cavity is formed after the lower mold and the upper mold are combined, and the lower mold is provided with a main runner connected to the cavity; A sand core is arranged in the mold cavity, wherein the sand core forms a channel for the molten liquid to pass through, and at least one first branch runner is arranged at an opening of the channel away from one end of the main runner.

2. The aluminum alloy integrated casting mold for air suspension chamber according to claim 1 is characterized in that: At least one second branch runner is arranged in the mold cavity, and the second branch runner is formed between the bottom of the sand core and the lower mold.

3. The aluminum alloy integrated casting mold for air suspension chamber according to claim 2 is characterized in that: The sand core is provided with three first branch runners, the first branch runners have the same angle with each other, and / or the cavity is provided with three second branch runners, the second branch runners have the same angle with each other.

4. The aluminum alloy integrated casting mold for air suspension chamber according to claim 1, characterized in that: It also includes a plurality of cooling components. The upper mold is provided with a plurality of cooling channels. The cooling components are respectively inserted into the cooling channels and convey cooling gas or liquid into the cooling channels.

5. The aluminum alloy integrated casting mold for air suspension chamber according to claim 4 is characterized in that: The cooling channel includes a first channel formed at the center of the cavity, and a plurality of second channels surrounding the cavity. The cooling component located in the first channel transports cooling liquid into the first channel, and the cooling component located in the second channel transports cooling gas into the second channel.

6. The aluminum alloy integrated casting mold for air suspension chamber according to claim 5, characterized in that: The depth of the first channel is greater than the depth of the second channel.

7. The aluminum alloy integrated casting mold for air suspension chamber according to claim 4, characterized in that: The cooling assembly includes a main body, and a first rod and a second rod connected to the main body. The main body is provided with an input port and an output port respectively connected to the first rod and the second rod.

8. The aluminum alloy integrated casting mold for air suspension chamber according to claim 7, characterized in that: The first rod body extends to the bottom of the cooling channel, and the length of the second rod body is smaller than that of the first rod body.

9. The aluminum alloy integrated casting mold for air suspension chamber according to claim 8, characterized in that: The second rod body is sleeved outside the first rod body.

10. The aluminum alloy integrated casting mold for air suspension chamber according to claim 1, characterized in that: It also includes a fixing plate and fixing bolts, and the side walls of the upper mold and the lower mold are respectively provided with fixing holes for installing the fixing bolts.

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